AIM:To compare the surgical outcomes of a multifocal intraocular lens(IOL;Lentis Comfort LS-313 MF15)with those of an enhanced monofocal IOL(Tecnis Eyhance DIB00V).METHODS:This retrospective study included patients wh...AIM:To compare the surgical outcomes of a multifocal intraocular lens(IOL;Lentis Comfort LS-313 MF15)with those of an enhanced monofocal IOL(Tecnis Eyhance DIB00V).METHODS:This retrospective study included patients who underwent cataract surgery with LS-313 MF15 or Eyhance IOL implantation.Data regarding patient demographics,surgical records,and ophthalmic examination before the cataract surgery and one and three months postoperatively were collected.Visual acuities,refractive values,defocus curves,contrast sensitivities and subjective symptoms were evaluated.RESULTS:Among the 71 eyes(47 patients)included in this study,32 eyes(20 patients)underwent LS-313 MF15 IOL implantation,and 39 eyes(27 patients)underwent Eyhance IOL implantation.No significant differences were observed in age,axial length,or refractive error between the two groups preoperatively.Furthermore,the distancecorrected and uncorrected distance visual acuities one month postoperatively did not differ between the groups,and both groups had sufficient visual acuities at the distances of 5,1 m,70,50,and 30 cm.Other ophthalmic data,including subjective symptoms based on the 14-item Visual Function Index Questionnaire,monocular defocus curves,contrast sensitivities,and halo and glare,did not differ between the groups three months postoperatively.Moreover,both groups had good outcomes.The spherical equivalent one month postoperatively was significantly myopic in the LS-313 MF15 group compared with that in the Eyhance group(P=0.033);however,this difference was not observed three months postoperatively(P=0.471).CONCLUSION:Comparison of the surgical outcomes of LS-313 MF15 with those of Eyhance with different optical properties reveal that both IOLs show good postoperative outcomes,with no significant differences being noted between the two IOLs.展开更多
Accurate prediction of lymph node(LN) status is crucially important for appropriate treatment planning in patients with early gastric cancer(EGC). However,consensus on patient and tumor characteristics associated with...Accurate prediction of lymph node(LN) status is crucially important for appropriate treatment planning in patients with early gastric cancer(EGC). However,consensus on patient and tumor characteristics associated with LN metastasis are yet to be reached. Through systematic search,we identified several independent variables associated with LN metastasis in EGC,which should be included in future research to assess which of these variables remain as significant predictors of LN metastasis. On the other hand,even if we use these promising parameters,we should realize the limitation and the difficulty of predicting LN metastasis accurately. The sentinel LN(SLN) is defined as first possible site to receive cancer cells along the route of lymphatic drainage from the primary tumor. The absence of metastasis in SLN is believed to correlate with the absence of metastasis in downstream LNs. In this review,we have attempted to focus on several independent parameters which have close relationship between tumor and LN metastasis in EGC. In addition,we evaluated the history of sentinel node navigation surgery and the usefulness for EGC.展开更多
AIM:To investigate the association of procalcitonin(PCT)with ulcerative colitis(UC)activity.METHODS:Serum PCT levels,C-reactive protein(CRP)levels,the erythrocyte sedimentation rate,and the white blood cell count were...AIM:To investigate the association of procalcitonin(PCT)with ulcerative colitis(UC)activity.METHODS:Serum PCT levels,C-reactive protein(CRP)levels,the erythrocyte sedimentation rate,and the white blood cell count were analyzed in 18 patients with UC and 11 healthy volunteers.Serum PCT levels were analyzed by an electrochemiluminescence immunoassay.Severity assessments were based on Truelove and Witts’severity index.Correlation of serum PCT and CRP levels with UC activity was examined.Moreover,we assessed serum PCT and CRP levels in patients with a Mayo endoscopic subscore.RESULTS:Serum PCT levels in severe UC patients(n=7)(0.096±0.034 ng/mL)were significantly higher than in mild-to-moderate UC patients(n=11)(0.033±0.012 ng/mL)and healthy volunteers(n=11)(0.035±0.005 ng/mL)(P=0.0005 and P<0.0001,respectively).In addition,there was no difference in serum PCT levels between mild-to-moderate UC patients and healthy volunteers.Interestingly,patients with a Mayo endoscopic subscore of 3 points displayed significantly increased levels of serum PCT(0.075±0.043 ng/mL)compared with patients with a subscore of 2 points(0.03±0.011 ng/mL)(P=0.0302).Moreover,CRP levels in patients with severe UC or a Mayo endoscopic subscore of 3 points were not significantly higher than in patients with mild-to-moderate UC or a Mayo endoscopic subscore of 3 points.CONCLUSION:Serum PCT levels were significantly correlated with UC activity.展开更多
Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D in...Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D increases the risk of rickets and fractures,low vitamin D levels are also associated with hypertension,cancer,and cardiovascular disease.In addition,diabetes mellitus(DM) and chronic kidney disease(CKD) are also related to vitamin D levels.Vitamin D deficiency has been linked to onset and progression of DM.Although in patients with DM the relationship between vitamin D and insulin secretion,insulin resistance,and β-cell dysfunction are pointed out,evidence regarding vitamin D levels and DM is contradictory,and well controlled studies are needed.In addition,vitamin D influences the renin-angiotensin system,inflammation,and mineral bone disease,which may be associated with the cause and progression CKD.There is increasing evidence that vitamin D deficiency may be a risk factor for DM and CKD;however,it remains uncertain whether vitamin D deficiency also predisposes to death from DM and CKD.Although at this time,supplementation with vitamin D has not been shown to improve glycemic control or prevent incident DM,clinical trials with sufficient sample size,study periods,and optimal doses of vitamin D supplementation are still needed.This review focuses on the mechanism of vitamin D insufficiency and deficiency in DM or CKD,and discusses the current evidence regarding supplementation with vitamin D in patients with these diseases.展开更多
AIM To identify the risk factors and clarify the subsequent clinical courses.METHODS This study retrospectively analyzed consecutive patients with esophageal squamous cell carcinoma( ESCC) treated using endoscopic sub...AIM To identify the risk factors and clarify the subsequent clinical courses.METHODS This study retrospectively analyzed consecutive patients with esophageal squamous cell carcinoma( ESCC) treated using endoscopic submucosal dissection(ESD) between April 2008 and October 2012. We divided the ESCC lesions into perforation cases and non-perforation cases, and compared characteristics and endoscopic findings between the two groups. "Intraoperative perforation" was defined as the detection of a perforation site during ESD and the presence of mediastinal emphysema.RESULTS In total, 147 patients with 156 ESCC lesions were treated by ESD. Intraoperative perforation was recorded for nine lesions(5.8%) from nine patients. Multivariate analysis identified mucosal deficiency larger than 75% of the circumference of the esophagus as an independent risk factor for intraoperative perforation(OR = 7.37, 95%CI: 1.45-37.4, P = 0.016). The predominant site of perforation was the left wall [6/9(67%)]. Six of nine perforation sites were successfully closed by clips during the procedures. Two of nine cases required drainage for pleural effusions; however, all nine cases recovered with conservative treatment and without surgical intervention. At the median follow up of 42 mo after ESD, no cases of local recurrence or distant organ metastasis had been observed.CONCLUSION This study suggests that mucosal deficiency larger than 75% of the luminal circumference is a risk factor for intraoperative perforation during ESD for ESCC.展开更多
BACKGROUND It is widely recognized that endoscopic resection(ER) of superficial nonampullary duodenal epithelial tumors(SNADETs) is technically challenging and may carry high risks of intraoperative and delayed bleedi...BACKGROUND It is widely recognized that endoscopic resection(ER) of superficial nonampullary duodenal epithelial tumors(SNADETs) is technically challenging and may carry high risks of intraoperative and delayed bleeding and perforation.These adverse events could be more critical than those occurring in other levels of the gastrointestinal tract. Because of the low prevalence of the disease and the high risks of severe adverse events, the curability including short-and long-term outcomes have not been standardized yet.AIM To investigate the curability including short-and long-term outcomes of ER for SNADETs in a large case series.METHODS This retrospective study included cases that underwent ER for SNADETs at our university hospital between March 2004 and July 2017. Short-term outcomes of ER were measured based on en bloc and R0 resection rates as well as adverse events. Long-term outcomes included local recurrence detected on endoscopic surveillance and disease-specific mortality in patients followed up for ≥ 12 mo after ER.RESULTS In the study, 131 patients with 147 SNADETs were analyzed. The 147 ERs consisted of 136 endoscopic mucosal resections(EMRs)(93%) and 11 endoscopic submucosal dissections(ESDs)(7%). The median tumor diameter was 10 mm.The pathology diagnosis was adenocarcinoma(56/147, 38%), high-grade intraepithelial neoplasia(44/147, 30%), or low-grade intraepithelial neoplasia(47/147, 32%). The R0 resection rate was 68%(93/136) in the EMR group and73%(8/11) in the ESD group, respectively. Cap-assisted EMR(known as EMR-C)showed a higher rate of R0 resection compared to the conventional method of EMR using a snare(78% vs 62%, P = 0.06). No adverse event was observed in the EMR group, whereas delayed bleeding, intraoperative perforation, and delayed perforation in 3, 3, and 5 patients occurred in the ESD group, respectively. One patient with perforation required emergency surgery. In the 43 mo median follow-up period, local recurrence was found in four EMR cases and all cases were treated endoscopically. No patient died due to tumor recurrence.CONCLUSION Our findings suggest that ER provides good long-term outcomes in the patients with SNADETs. EMR is likely to become the safe and reliable treatment for small SNADETs.展开更多
AIM： To identify the precise location of putative tumor suppressor genes （TSGs） on the short arm of chromosome 8 in patients with hepatocellular carcinoma （HCC）. METHODS： We used 16 microsatellite markers inform...AIM： To identify the precise location of putative tumor suppressor genes （TSGs） on the short arm of chromosome 8 in patients with hepatocellular carcinoma （HCC）. METHODS： We used 16 microsatellite markers informative in Japanese patients, which were selected from 61 pub- lished markers, on 81：）, to analyze the frequency of loss of heterozygosity （LOH） in each region in 33 cases （56 lesions） of HCC. RESULTS： The frequency of LOH at 8p23.2-21 with at least one marker was 63% （20/32） in the informative cases. More specifically, the frequency of LOH at 8p23.2, 8p23.1, 8p22, and 8p21 was 6%, 52%, 47%, and 13% in HCC cases. The LOH was significantly more frequent at 8p23.1 and 8p22 than the average （52% vs 220, P = 0.0008; and 47% vs 22%, P = 0.004, respectively） or others sites, such as 8p23.2 （52% vs 60, P = 0.003; 47% vs 220, P = 0.004） and 8p21 （52% vs 13%, P = 0.001; 47% vs 13%, P = 0.005） in liver cancer on the basis of cases. Notably, LOH frequency was significantly higher at D85277, DSS503, DSS1130, DSS552, DSS254 and D8S258 than at the other sites. However, no allelic loss was detected at any marker on 8p in the lesions of nontumor liver tissues. CONCLUSION： Deletion of 8p, especially the loss of 8p23.1-22, is an important event in the initiation or promotion of HCC. Our results should be useful in identi- fying critical genes that might lie at 8p23.1-22.展开更多
AIM: To investigate the endoscopic features of pharyngeal superfi cial carcinoma and evaluate the utility of narrow-band imaging (NBI) for this disease. METHODS: In the present prospective study, 335 patients underwen...AIM: To investigate the endoscopic features of pharyngeal superfi cial carcinoma and evaluate the utility of narrow-band imaging (NBI) for this disease. METHODS: In the present prospective study, 335 patients underwent conventional white light (CWL) en-doscopy and non-magnifi ed/magnifi ed NBI endoscopy, followed by an endoscopic biopsy, for 445 superfi cial lesions in the oropharynx and hypopharynx. The macroscopic appearance of superfi cial lesions was categorized as either elevated (< 5 mm in height), flat, or depressed (not ulcerous). Superficial carcinoma (SC) was defi ned as a superfi cial lesion showing high-grade dysplasia or squamous cell carcinoma on histology. The color, delineation, and macroscopic appearances of the lesions were evaluated by CWL endoscopy. The ratio of the brownish area/intervascular brownish epithelium (IBE), as well as microvascular proliferation, dilation, and irregularities, was determined by non-magnifi ed/ magnifi ed NBI endoscopy. An experienced pathologist who was unaware of the endoscopic fi ndings made the histological diagnoses. By comparing endoscopic fi ndings with histology, we determined the endoscopic features of SC and evaluated the diagnostic utility of NBI. RESULTS: The 445 lesions were divided histologically into two groups: a non-SC group, including non-neoplasia and low-grade dysplasia cases, and an SC group. Of the 445 lesions examined, 333 were classified as non-SC and 112 were classif ied as SC. There were no significant differences in age, gender, or the location of the lesions between the patients in the two groups. The mean diameter of the SC lesions was signif icantly greater than that of non-SC lesions (11.0 ± 7.6 mm vs 4.6 ± 3.6 mm, respectively, P < 0.001). Comparisons of CWL endoscopy fi ndings for SC and non-SC lesions by univariate analysis revealed that the incidence of redness (72% vs 41%, respectively, P < 0.001) and a flat or depressed type of lesion (58% vs 44%, respectively, P = 0.013) was significantly higher in the SC group. Using non-magnifi ed NBI endoscopy, the incidence of a brownish area was signifi cantly higher for SC lesions (79% vs 57%, respectively, P < 0.001). On magnifi ed NBI endoscopy, the incidence of IBE (68% vs 33%, P < 0.001) and microvascular proliferation (82% vs 51%, P < 0.001), dilation (90% vs 76%, P =0.002), and irregularity (82% vs 31%, P < 0.001) was also signifi cantly higher for the SC compared with the non-SC lesions. Multivariate analysis revealed that the incidence of redness (P = 0.022) on CWL endoscopy and IBE (P < 0.001) and microvascular irregularities (P < 0.001) on magnif ied NBI endoscopy was signif icantly higher in SC than non-SC lesions. Redness alone exhibited signifi cantly higher sensitivity and signifi cantly lower specifi city for the diagnosis of SC compared with redness plus IBE and microvascular irregularities (72% vs 52%, P = 0.002; and 59% vs 92%, P < 0.001, respectively). The accuracy of redness plus IBE and irregularities for the diagnosis of SC was signifi cantly greater than using redness alone (82% vs 62%, respectively, P < 0.001). CONCLUSION: Redness, IBE, and microvascular irregularities appear to be closely related to SC lesions. Magnifi ed NBI endoscopy may increase the diagnostic accuracy of CWL endoscopy for SC.展开更多
In this review, I outline the characteristic endoscopic findings of serrated lesions of the colorectum based on image enhanced endoscopy(IEE). Histopathologically, lesions with serrated structures are typically classi...In this review, I outline the characteristic endoscopic findings of serrated lesions of the colorectum based on image enhanced endoscopy(IEE). Histopathologically, lesions with serrated structures are typically classified into the following three types based: hyperplastic polyps(HPs), traditional serrated adenomas(TSAs), and sessile serrated adenoma/polyps(SSA/Ps). Both HP and SSA/P often present as dark-green colors on auto fluorescence imaging(AFI) colonoscopy that are similar to the normal surrounding mucosa. In contrast, TSAs often have elevated shapes and present as magenta colors that are similar to the tubular adenomas. The superficial type of TSA also includes many lesions that present as magenta colors. When SSA/Ps are associated with cytological dysplasia, many lesions present with magenta colors, whereas lesions that are not associated with cytological dysplasia present with dark-green colors. When observed via narrow band imaging(NBI), many SSA/P include lesions with strong mucous adhesions. Because these lesions are observed with reddish mucous adhesions, we refer to them as "red cap sign" and place such signs among the typical findings of SSA/P. Because the dilatation of the pit in SSA/P is observed as a round/oval black dot on magnified observations, we refer to this finding as Ⅱ-dilatation pit(Ⅱ-D pit) and also positioned it as a characteristic finding of SSA/P. In contrast, dilatations of the capillary vessels surrounding the glands, such as those that occur in tubular adenoma, are not considered to be useful for differentiating HPs from SSA/Ps. However, in cases in which SSA/P is associated with cytological dysplasia, the dilatation of capillary vessels is observed in the same area. When submucosal layer invasion occurs in the same area, the blood flow presents with irregularities that are similar to those of common colorectal cancer at an early stage and disappears as the invasion proceeds deeply. The surface pattern of invasive cancer that is observed at the tumor surface is also likely to disappear. Based on the above results, we considered that the differentiations between HP and TSA, between TSA and SSA/P, and between HP and SSA/P might become easier due to the concomitant use of white light observation and IEE. We also concluded that AFI and NBI can be useful modalities for SSA/P lesions associated with cytological dysplasia.展开更多
AIM:To evaluate the efficacy of computer-assisted color analysis of colorectal lesions using a novel auto-fluorescence imaging(AFI)system to distinguish neoplastic lesions from non-neoplastic lesions and to predict th...AIM:To evaluate the efficacy of computer-assisted color analysis of colorectal lesions using a novel auto-fluorescence imaging(AFI)system to distinguish neoplastic lesions from non-neoplastic lesions and to predict the depth of invasion.METHODS:From January 2013 to April 2013,consecutive patients with known polyps greater than 5 mm in size who were scheduled to undergo endoscopic treatment at The Jikei University Hospital were prospectively recruited for this study.All lesions were evaluated using a novel AFI system,and color-tone sampling was performed in a region of interest determined from narrow band imaging or from chromoendoscopy findings without magnification.The green/red(G/R)ratio for each lesion on the AFI images was calculated automatically using a computer-assisted color analysis system that permits real-time color analysis during endoscopic procedures.RESULTS:A total of 88 patients with 163 lesions were enrolled in this study.There were significant differences in the G/R ratios of hyperplastic polyps(non-neoplastic lesions),adenoma/intramucosal cancer/submucosal(SM)superficial cancer,and SM deep cancer(P<0.0001).The mean±SD G/R ratios were 0.984±0.118in hyperplastic polyps and 0.827±0.081 in neoplastic lesions.The G/R ratios of hyperplastic polyps were significantly higher than those of neoplastic lesions(P<0.001).When a G/R ratio cut-off value of>0.89 was applied to determine non-neoplastic lesions,the sensitivity,specificity,positive predictive value(PPV),negative predictive value(NPV),and accuracy were 83.9%,82.6%,53.1%,95.6%and 82.8%,respectively.For neoplastic lesions,the mean G/R ratio was 0.834±0.080 in adenoma/intramucosal cancer/SM superficial cancer and 0.746±0.045 in SM deep cancer.The G/R ratio of adenoma/intramucosal cancer/SM superficial cancer was significantly higher than that of SM deep cancer(P<0.01).When a G/R ratio cut-off value of<0.77 was applied to distinguish SM deep cancers,the sensitivity,specificity,PPV,NPV,and accuracy were80.0%,84.4%,29.6%,98.1%and 84.1%,respectively.CONCLUSION:The novel AFI system with color analysis was effective in distinguishing non-neoplastic lesions from neoplastic lesions and might allow determination of the depth of invasion.展开更多
AIM: To investigate two distinct clinical phenotypes of reflux esophagitis and intra-hernial ulcer (Cameron lesions) in patients with large hiatal hernias. METHODS: A case series study was performed with 16 831 patien...AIM: To investigate two distinct clinical phenotypes of reflux esophagitis and intra-hernial ulcer (Cameron lesions) in patients with large hiatal hernias. METHODS: A case series study was performed with 16 831 patients who underwent diagnostic esophagogastroduodenoscopy for 2 years at an academic referral center. A hiatus diameter ≥ 4 cm was defined as a large hernia. A sharp fold that surrounded the cardia was designated as an intact gastroesophageal flap valve (GEFV), and a loose fold or disappearance of the fold was classified as an impaired GEFV. We studied the associations between large hiatal hernias and the distinct clinical phenotypes (reflux esophagitis and Cameron lesions), and analyzed factors that distinguished the clinical phenotypes. RESULTS: Large hiatal hernias were found in 49 (0.3%) of 16 831 patients. Cameron lesions and reflux esopha-gitis were observed in 10% and 47% of these patients, and 0% and 8% of the patients without large hiatal hernias, which indicated significant associations between large hiatal hernias and these diseases. However, there was no coincidence of the two distinct disorders. Univariate analysis demonstrated significant associations between Cameron lesions and the clinico-endoscopic factors such as nonsteroidal anti-inflammatory drug (NSAID) intake (80% in Cameron lesion cases vs 18% in non-Cameron lesion cases, P=0.015) and intact GEFV (100% in Cameron lesion cases vs 18% in non-Cameron lesion cases, P=0.0007). In contrast, reflux esophagitis was linked with impaired GEFV (44% in reflux esophagitis cases vs 8% in non-reflux esophagitis cases, P = 0.01). Multivariate regression analysis confirmed these significant associations. CONCLUSION: GEFV status and NSAID intake distinguish clinical phenotypes of large hiatal hernias. Cameron lesions are associated with intact GEFV and NSAID intake.展开更多
We are reporting a rare case of acute liver injury that developed after an internal hemorrhoid treatment with the aluminum potassium sulfate and tannic acid(ALTA) regimen. A 41-year-old man developed a fever and liver...We are reporting a rare case of acute liver injury that developed after an internal hemorrhoid treatment with the aluminum potassium sulfate and tannic acid(ALTA) regimen. A 41-year-old man developed a fever and liver injury after undergoing internal hemorrhoid treatment with a submucosal injection of ALTA with lidocaine. The acute liver injury was classified clinically as hepatocellular and pathologically as cholestastic. We could not classify the mechanism of injury. High eosinophil and immunoglobulin E levels characterized the injury,and a drug lymphocyte stimulation test was negative on postoperative day 25. Fluid replacement for two weeks after hospitalization improved the liver injury. ALTA therapy involves injecting chemicals into the submucosa,from the rectum to the anus,and this is the first description of a case that developed a severe liver disorder after this treatment; hence,an analysis of future cases as they accumulate is desirable.展开更多
AIM:To identify factors associated with prognosis of hepatocellular carcinoma(HCC) after initial therapy.METHODS:A total of 377 HCC patients who were newly treated at Katsushika Medical Center,Japan from January 2000 ...AIM:To identify factors associated with prognosis of hepatocellular carcinoma(HCC) after initial therapy.METHODS:A total of 377 HCC patients who were newly treated at Katsushika Medical Center,Japan from January 2000 to December 2009 and followed up for > 2 years,or died during follow-up,were enrolled.The factors related to survival were first analyzed in 377 patients with HCC tumor stage T1-T4 using multivariate Cox proportional hazards regression analysis.A similar analysis was performed in 282 patients with tumor stage T1-T3.Additionally,factors associated with the period between initial and subsequent therapy were examined in 144 patients who did not show local recurrence.Finally,214 HCC stage T1-T3 patients who died during the observation period were classified into four groups according to their alcohol consumption and postprandial glucose levels,and differences in their causes of death were examined.RESULTS:On multivariate Cox proportional hazards regression analysis,the following were significantly associated with survival:underlying liver disease stage [non-cirrhosis/Child-Pugh A vs B/C,hazard ratio(HR):0.603,95% CI:0.417-0.874,P = 0.0079],HCC stage(T1/T2 vs T3/T4,HR:0.447,95% CI:0.347-0.576,P < 0.0001),and mean postprandial plasma glucose after initial therapy(< 200 vs ≥ 200 mg/dL,HR:0.181,95% CI:0.067-0.488,P = 0.0008).In T1-T3 patients,uninterrupted alcohol consumption after initial therapy(no vs yes,HR:0.641,95% CI:0.469-0.877,P = 0.0055) was significant in addition to underlying liver disease stage(non-cirrhosis/Child-Pugh A vs B/C,HR:0649,95% CI:0.476-0.885,P = 0.0068),HCC stage(T1 vs T2/T3,HR:0.788,95% CI:0.653-0.945,P = 0.0108),and mean postprandial plasma glucose after initial therapy(< 200 mg/dL vs ≥ 200 mg/dL,HR:0.502,95% CI:0.337-0.747,P = 0.0005).In patients without local recurrence,time from initial to subsequent therapy for newly emerging HCC was significantly longer in the "postprandial glucose within 200 mg/dL group" than the "postprandial glucose > 200 mg/dL group"(log-rank test,P < 0.05),whereas there was no difference in the period between the "non-alcohol group"(patients who did not drink regularly or those who could reduce their daily consumption to < 20 g) and the "continuation group"(drinkers who continued to drink > 20 g daily).Of 214 T1-T3 patients who died during the observation period,death caused by other than HCC progression was significantly more frequent in "group AL"(patients in the continuation and postprandial glucose within 200 mg/dL groups) than "group N"(patients in the non-alcohol and postprandial glucose within 200 mg/dL groups)(P = 0.0016).CONCLUSION:This study found that abstinence from habitual alcohol consumption and intensive care for diabetes mellitus were related to improved prognosis in HCC patients.展开更多
AIM:To investigate seasonal variations in the onset and relapse of ulcerative colitis(UC)in Japanese patients.METHODS:Between 1994 and 2006,198 Japanese patients diagnosed with UC according to conventional criteria in...AIM:To investigate seasonal variations in the onset and relapse of ulcerative colitis(UC)in Japanese patients.METHODS:Between 1994 and 2006,198 Japanese patients diagnosed with UC according to conventional criteria in an academic hospital were enrolled for onset evaluation.Among 265 Japanese patients with UC who were observed for more than 12 mo,165 patients relapsed(239 times)and were enrolled for relapse evaluation.The patients’symptoms were recorded each month for 12 consecutive years.RESULTS:There was monthly seasonality in symptom onset during October and March for UC.The onset of symptoms in UC patients frequently occurred during the winter.Variation in UC onset was observed according to both month(P=0.015)and season(P=0.048).Relapse commonly occurred in October,and variations in relapse were not significant either in month(P=0.52)or season(P=0.12).Upper respiratory inflammation was the main factor responsible for relapse.CONCLUSION:Our results suggest that environmental factors associated with winter and spring seasonality may be responsible for triggering the clinical onset of UC in Japan.展开更多
There are cases of hepatitis involving occult hepatitis B virus(HBV)infection in which,even though the HB surface antigen(HBsAg)is negative,HBV-DNA is detected by a polymerase chain reaction(PCR).We con-ducted a seque...There are cases of hepatitis involving occult hepatitis B virus(HBV)infection in which,even though the HB surface antigen(HBsAg)is negative,HBV-DNA is detected by a polymerase chain reaction(PCR).We con-ducted a sequence analysis of the entire HBV region in a case of non-B non-C chronic hepatitis in a 46-yearold female.A diagnosis of non-B non-C chronic hepatitis was made.Although HBV markers,such as HBs antibody(anti-HBs),anti-HBc,HBeAg and anti-HBe,were negative,HBV-DNA was positive.Nested PCR was performed to amplify the precore region of HBV-DNA and all remaining regions by long nested PCR.Sequence analysis of the two obtained bands was conducted by direct sequencing.Compared with the control strains,the ATG(Methionine)start codon in the X region had mut ated to GTG(Valine).It is assumed that a mutation at the start codon in the X region may be the reason why HBV markers are negative in some cases of hepatitis that involve occult HBV infection.展开更多
BACKGROUND Effective treatment of osteoporosis is essential for improving morbidity and health-related quality of life in chronic liver disease(CLD)patients.Denosumab has been shown to increase bone mineral density(BM...BACKGROUND Effective treatment of osteoporosis is essential for improving morbidity and health-related quality of life in chronic liver disease(CLD)patients.Denosumab has been shown to increase bone mineral density(BMD)and decrease the risk of osteoporotic fracture in the general population.However,there are few reports evaluating the efficacy of denosumab in CLD patients.AIM To investigated the effects and safety of denosumab in CLD patients with osteoporosis.METHODS Sixty CLD patients with osteoporosis were subcutaneously administered denosumab once every 6 mo.The study period for evaluating efficacy and safety was 12 mo.Changes from baseline in BMD at the lumbar spine,femoral neck,and total hip were evaluated at 12 mo of denosumab treatment.Bone turnover and quality were assessed by measuring serum tartrate-resistant acid phosphatase-5b(bone resorption marker),serum total procollagen type I N-terminal propeptide(bone formation maker),and plasma pentosidine(bone quality marker).RESULTS Among the 405 CLD patients,138(34.1%)patients were diagnosed with osteoporosis;among these,78 patients met the exclusion criteria and thus 60 patients were finally included in the present study.The median percentage changes from baseline to 12 mo of denosumab treatment in BMD at the lumbar spine,femoral neck,and total hip were+4.44%,+3.71%,and+4.03%,respectively.Denosumab significantly improved BMD,regardless of sex,patient age,and presence of liver cirrhosis.Serum tartrate-resistant acid phosphatase-5b and procollagen type I N-terminal propeptide levels constantly and significantly declined after denosumab treatment(P<0.001).Plasma pentosidine levels were also significantly lower at 12 mo of treatment(P=0.010).No patients experienced fractures and moderate-to-severe adverse events,except for transient hypocalcemia.CONCLUSION Denosumab treatment was safe and increased BMD,suppressed bone turnover,and improved bone quality marker levels in CLD patients with osteoporosis,irrespective of differences in baseline characteristics.展开更多
AIM:To make clear whether CD147 (EMMPRIN) expression in pathological tumor samples with a fine-needle aspiration biopsy is useful for pathological diagnosis of early hepatocellular carcinoma (HCC). METHODS:Twenty-two ...AIM:To make clear whether CD147 (EMMPRIN) expression in pathological tumor samples with a fine-needle aspiration biopsy is useful for pathological diagnosis of early hepatocellular carcinoma (HCC). METHODS:Twenty-two patients (15 men and 7 women; median age 68 years,range 56-81 years) underwent a liver tissue biopsy in order to make a diagnosis of HCC. Paraffin-embedded liver biopsy tissue samples from 22 patients were stained with anti-CD147 antibody,murine monoclonal antibody 12C3 (MAb12C3) for immunohistochemical analysis. An immunohistochemical analysis of CD147 was performed and the degree of staining compared between tumor and non-tumor tissue. In addition,the degree of staining within tumor tissue was compared according to a number of clinicopathological variables. RESULTS:The degree of staining of CD147 was significantly higher in tumor tissues than non-tumor tissues,even in tumors less than 15 mm in diameter.The expression of this protein was significantly elevated in HCC tissue specimens from patients with a low value of serum AST and γ-GTP.展开更多
AIM： To develop the effective technology for reconstruction of a liver organ in vitro using a bio-artificial liver. METHODS： We previously reported that a radial-flow bioreactor （RFB） could provide a three-dimensi...AIM： To develop the effective technology for reconstruction of a liver organ in vitro using a bio-artificial liver. METHODS： We previously reported that a radial-flow bioreactor （RFB） could provide a three-dimensional highdensity culture system. We presently reconstructed the liver organoid using a functional human hepatocellular carcinoma cell line （FLC-5） as hepatocytes together with mouse immortalized sinusoidal endothelial cell （SEC） line M1 and mouse immortalized hepatic stellate cell （HSC） line A7 as non parenchymal cells in the RFB. Two × 10^7 FLC-5 cells were incubated in the RFB. After 5 d, 2 × 10^7 A7 cells were added in a similar manner followed by another addition of 10^7 M1 cells 5 d later. After three days of perfusion, some cellulose beads with the adherent cells were harvested. The last incubation period included perfusion with 200 nmol/L swinholide A for 2 h and then the remaining cellulose beads along with adherent cells were harvested from the RFB. The cell morphology was observed by transmission electron microscopy （TEM） and scanning electron microscopy （SEM）. To assess hepatocyte function, we compared mRNA expression for urea cycle enzymes as well as albumin synthesis by FLC-5 in monolayer cultures compared to those of single-type cultures and cocultures in the RFB. RESULTS： By transmission electron microscopy, FLC-5, M1, and A7 were arranged in relation to the perfusion side in a liver-like organization. Structures resembling bile canaliculi were seen between FCL-5 cells. Scanning electron microscopy demonstrated fenestrae on SEC surfaces. The number of vesiculo-vacuolar organelles （WO） and fenestrae increased when we introduced the actin-binding agent swinholide-A in the RFB for 2h. With respect to liver function, urea was found in the medium, and expression of mRNAs encoding arginosuccinate synthetase and arginase increased when the three cell types were cocultured in the RFB. However, albumin synthesis decreased. CONCLUSION： Co-culture in the RFB system can dramatically change the structure and function of all cell types, including the functional characteristics of hepatocytes. Our system proves effective for reconstruction of a liver organoid using a bio-artificial liver.展开更多
Low-frequency repetitive transcranial magnetic stimulation（LF-r TMS） to the contralesional hemisphere and intensive occupational therapy（i OT） have been shown to contribute to a significant improvement in upper li...Low-frequency repetitive transcranial magnetic stimulation（LF-r TMS） to the contralesional hemisphere and intensive occupational therapy（i OT） have been shown to contribute to a significant improvement in upper limb hemiparesis in patients with chronic stroke. However, the effect of the combined intervention program of LF-r TMS and i OT on cognitive function is unknown. We retrospectively investigated whether the combined treatment influence patient＇s Trail-Making Test part B（TMT-B） performance, which is a group of easy and inexpensive neuropsychological tests that evaluate several cognitive functions. Twenty-five patients received 11 sessions of LF-r TMS to the contralesional hemisphere and 2 sessions of i OT per day over 15 successive days. Patients with right- and left-sided hemiparesis demonstrated significant improvements in upper limb motor function following the combined intervention program. Only patients with right-sided hemiparesis exhibited improved TMT-B performance following the combined intervention program, and there was a significant negative correlation between Fugl-Meyer Assessment scale total score change and TMT-B performance. The results indicate the possibility that LF-r TMS to the contralesional hemisphere combined with i OT improves the upper limb motor function and cognitive function of patients with right-sided hemiparesis. However, further studies are necessary to elucidate the mechanism of improved cognitive function.展开更多
AIM To investigate the detrimental impact of loss of reservoir capacity by comparing total gastrectomy(TGRY) and distal gastrectomy with the same Rouxen-Y(DGRY) reconstruction. The study was conducted using an integra...AIM To investigate the detrimental impact of loss of reservoir capacity by comparing total gastrectomy(TGRY) and distal gastrectomy with the same Rouxen-Y(DGRY) reconstruction. The study was conducted using an integrated questionnaire, the Postgastrectomy Syndrome Assessment Scale(PGSAS)-45, recently developed by the Japan Postgastrectomy Syndrome Working Party.METHODS The PGSAS-45 comprises 8 items from the Short Form-8, 15 from the Gastrointestinal Symptom Rating Scale, and 22 newly selected items. Uni-and multivariate analysis was performed on 868 questionnaires completed by patients who underwent either TGRY(n = 393) or DGRY(n = 475) for stage I gastric cancer(52 institutions). Multivariate analysis weighed of six explanatory variables, including the type of gastrectomy(TGRY/DGRY), interval after surgery, age, gender, surgical approach(laparoscopic/open), and whether the celiac branch of the vagus nerve was preserved/divided on the quality of life(QOL).RESULTS The patients who underwent TGRY experienced the poorer QOL compared to DGRY in the 15 of 19 main outcome measures of PGSAS-45. Moreover, multiple regression analysis indicated that the type of gastrectomy, TGRY, most strongly and broadly impaired the postoperative QOL among six explanatory variables. CONCLUSION The results of the present study suggested that TGRY had a certain detrimental impact on the postoperative QOL, and the loss of reservoir capacity could be a major cause.展开更多
基金Supported by the grant of Japan Society for the Promotion of Science(JSPS)KAKENHI(No.21K09729)a grant from Alcon Japan Ltd.,awarded to Horiguchi H.
文摘AIM:To compare the surgical outcomes of a multifocal intraocular lens(IOL;Lentis Comfort LS-313 MF15)with those of an enhanced monofocal IOL(Tecnis Eyhance DIB00V).METHODS:This retrospective study included patients who underwent cataract surgery with LS-313 MF15 or Eyhance IOL implantation.Data regarding patient demographics,surgical records,and ophthalmic examination before the cataract surgery and one and three months postoperatively were collected.Visual acuities,refractive values,defocus curves,contrast sensitivities and subjective symptoms were evaluated.RESULTS:Among the 71 eyes(47 patients)included in this study,32 eyes(20 patients)underwent LS-313 MF15 IOL implantation,and 39 eyes(27 patients)underwent Eyhance IOL implantation.No significant differences were observed in age,axial length,or refractive error between the two groups preoperatively.Furthermore,the distancecorrected and uncorrected distance visual acuities one month postoperatively did not differ between the groups,and both groups had sufficient visual acuities at the distances of 5,1 m,70,50,and 30 cm.Other ophthalmic data,including subjective symptoms based on the 14-item Visual Function Index Questionnaire,monocular defocus curves,contrast sensitivities,and halo and glare,did not differ between the groups three months postoperatively.Moreover,both groups had good outcomes.The spherical equivalent one month postoperatively was significantly myopic in the LS-313 MF15 group compared with that in the Eyhance group(P=0.033);however,this difference was not observed three months postoperatively(P=0.471).CONCLUSION:Comparison of the surgical outcomes of LS-313 MF15 with those of Eyhance with different optical properties reveal that both IOLs show good postoperative outcomes,with no significant differences being noted between the two IOLs.
文摘Accurate prediction of lymph node(LN) status is crucially important for appropriate treatment planning in patients with early gastric cancer(EGC). However,consensus on patient and tumor characteristics associated with LN metastasis are yet to be reached. Through systematic search,we identified several independent variables associated with LN metastasis in EGC,which should be included in future research to assess which of these variables remain as significant predictors of LN metastasis. On the other hand,even if we use these promising parameters,we should realize the limitation and the difficulty of predicting LN metastasis accurately. The sentinel LN(SLN) is defined as first possible site to receive cancer cells along the route of lymphatic drainage from the primary tumor. The absence of metastasis in SLN is believed to correlate with the absence of metastasis in downstream LNs. In this review,we have attempted to focus on several independent parameters which have close relationship between tumor and LN metastasis in EGC. In addition,we evaluated the history of sentinel node navigation surgery and the usefulness for EGC.
基金Supported by Grants-in-Aid for Scientific Research (C) from the Ministry of EducationCulture+2 种基金SportsScience and Technology of JapanNo.23501289
文摘AIM:To investigate the association of procalcitonin(PCT)with ulcerative colitis(UC)activity.METHODS:Serum PCT levels,C-reactive protein(CRP)levels,the erythrocyte sedimentation rate,and the white blood cell count were analyzed in 18 patients with UC and 11 healthy volunteers.Serum PCT levels were analyzed by an electrochemiluminescence immunoassay.Severity assessments were based on Truelove and Witts’severity index.Correlation of serum PCT and CRP levels with UC activity was examined.Moreover,we assessed serum PCT and CRP levels in patients with a Mayo endoscopic subscore.RESULTS:Serum PCT levels in severe UC patients(n=7)(0.096±0.034 ng/mL)were significantly higher than in mild-to-moderate UC patients(n=11)(0.033±0.012 ng/mL)and healthy volunteers(n=11)(0.035±0.005 ng/mL)(P=0.0005 and P<0.0001,respectively).In addition,there was no difference in serum PCT levels between mild-to-moderate UC patients and healthy volunteers.Interestingly,patients with a Mayo endoscopic subscore of 3 points displayed significantly increased levels of serum PCT(0.075±0.043 ng/mL)compared with patients with a subscore of 2 points(0.03±0.011 ng/mL)(P=0.0302).Moreover,CRP levels in patients with severe UC or a Mayo endoscopic subscore of 3 points were not significantly higher than in patients with mild-to-moderate UC or a Mayo endoscopic subscore of 3 points.CONCLUSION:Serum PCT levels were significantly correlated with UC activity.
文摘Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D increases the risk of rickets and fractures,low vitamin D levels are also associated with hypertension,cancer,and cardiovascular disease.In addition,diabetes mellitus(DM) and chronic kidney disease(CKD) are also related to vitamin D levels.Vitamin D deficiency has been linked to onset and progression of DM.Although in patients with DM the relationship between vitamin D and insulin secretion,insulin resistance,and β-cell dysfunction are pointed out,evidence regarding vitamin D levels and DM is contradictory,and well controlled studies are needed.In addition,vitamin D influences the renin-angiotensin system,inflammation,and mineral bone disease,which may be associated with the cause and progression CKD.There is increasing evidence that vitamin D deficiency may be a risk factor for DM and CKD;however,it remains uncertain whether vitamin D deficiency also predisposes to death from DM and CKD.Although at this time,supplementation with vitamin D has not been shown to improve glycemic control or prevent incident DM,clinical trials with sufficient sample size,study periods,and optimal doses of vitamin D supplementation are still needed.This review focuses on the mechanism of vitamin D insufficiency and deficiency in DM or CKD,and discusses the current evidence regarding supplementation with vitamin D in patients with these diseases.
文摘AIM To identify the risk factors and clarify the subsequent clinical courses.METHODS This study retrospectively analyzed consecutive patients with esophageal squamous cell carcinoma( ESCC) treated using endoscopic submucosal dissection(ESD) between April 2008 and October 2012. We divided the ESCC lesions into perforation cases and non-perforation cases, and compared characteristics and endoscopic findings between the two groups. "Intraoperative perforation" was defined as the detection of a perforation site during ESD and the presence of mediastinal emphysema.RESULTS In total, 147 patients with 156 ESCC lesions were treated by ESD. Intraoperative perforation was recorded for nine lesions(5.8%) from nine patients. Multivariate analysis identified mucosal deficiency larger than 75% of the circumference of the esophagus as an independent risk factor for intraoperative perforation(OR = 7.37, 95%CI: 1.45-37.4, P = 0.016). The predominant site of perforation was the left wall [6/9(67%)]. Six of nine perforation sites were successfully closed by clips during the procedures. Two of nine cases required drainage for pleural effusions; however, all nine cases recovered with conservative treatment and without surgical intervention. At the median follow up of 42 mo after ESD, no cases of local recurrence or distant organ metastasis had been observed.CONCLUSION This study suggests that mucosal deficiency larger than 75% of the luminal circumference is a risk factor for intraoperative perforation during ESD for ESCC.
文摘BACKGROUND It is widely recognized that endoscopic resection(ER) of superficial nonampullary duodenal epithelial tumors(SNADETs) is technically challenging and may carry high risks of intraoperative and delayed bleeding and perforation.These adverse events could be more critical than those occurring in other levels of the gastrointestinal tract. Because of the low prevalence of the disease and the high risks of severe adverse events, the curability including short-and long-term outcomes have not been standardized yet.AIM To investigate the curability including short-and long-term outcomes of ER for SNADETs in a large case series.METHODS This retrospective study included cases that underwent ER for SNADETs at our university hospital between March 2004 and July 2017. Short-term outcomes of ER were measured based on en bloc and R0 resection rates as well as adverse events. Long-term outcomes included local recurrence detected on endoscopic surveillance and disease-specific mortality in patients followed up for ≥ 12 mo after ER.RESULTS In the study, 131 patients with 147 SNADETs were analyzed. The 147 ERs consisted of 136 endoscopic mucosal resections(EMRs)(93%) and 11 endoscopic submucosal dissections(ESDs)(7%). The median tumor diameter was 10 mm.The pathology diagnosis was adenocarcinoma(56/147, 38%), high-grade intraepithelial neoplasia(44/147, 30%), or low-grade intraepithelial neoplasia(47/147, 32%). The R0 resection rate was 68%(93/136) in the EMR group and73%(8/11) in the ESD group, respectively. Cap-assisted EMR(known as EMR-C)showed a higher rate of R0 resection compared to the conventional method of EMR using a snare(78% vs 62%, P = 0.06). No adverse event was observed in the EMR group, whereas delayed bleeding, intraoperative perforation, and delayed perforation in 3, 3, and 5 patients occurred in the ESD group, respectively. One patient with perforation required emergency surgery. In the 43 mo median follow-up period, local recurrence was found in four EMR cases and all cases were treated endoscopically. No patient died due to tumor recurrence.CONCLUSION Our findings suggest that ER provides good long-term outcomes in the patients with SNADETs. EMR is likely to become the safe and reliable treatment for small SNADETs.
文摘AIM： To identify the precise location of putative tumor suppressor genes （TSGs） on the short arm of chromosome 8 in patients with hepatocellular carcinoma （HCC）. METHODS： We used 16 microsatellite markers informative in Japanese patients, which were selected from 61 pub- lished markers, on 81：）, to analyze the frequency of loss of heterozygosity （LOH） in each region in 33 cases （56 lesions） of HCC. RESULTS： The frequency of LOH at 8p23.2-21 with at least one marker was 63% （20/32） in the informative cases. More specifically, the frequency of LOH at 8p23.2, 8p23.1, 8p22, and 8p21 was 6%, 52%, 47%, and 13% in HCC cases. The LOH was significantly more frequent at 8p23.1 and 8p22 than the average （52% vs 220, P = 0.0008; and 47% vs 22%, P = 0.004, respectively） or others sites, such as 8p23.2 （52% vs 60, P = 0.003; 47% vs 220, P = 0.004） and 8p21 （52% vs 13%, P = 0.001; 47% vs 13%, P = 0.005） in liver cancer on the basis of cases. Notably, LOH frequency was significantly higher at D85277, DSS503, DSS1130, DSS552, DSS254 and D8S258 than at the other sites. However, no allelic loss was detected at any marker on 8p in the lesions of nontumor liver tissues. CONCLUSION： Deletion of 8p, especially the loss of 8p23.1-22, is an important event in the initiation or promotion of HCC. Our results should be useful in identi- fying critical genes that might lie at 8p23.1-22.
基金Supported by A Grant-in-Aid for Cancer Research (18-8) from the Ministry of Health, Labour and Welfare of Japan
文摘AIM: To investigate the endoscopic features of pharyngeal superfi cial carcinoma and evaluate the utility of narrow-band imaging (NBI) for this disease. METHODS: In the present prospective study, 335 patients underwent conventional white light (CWL) en-doscopy and non-magnifi ed/magnifi ed NBI endoscopy, followed by an endoscopic biopsy, for 445 superfi cial lesions in the oropharynx and hypopharynx. The macroscopic appearance of superfi cial lesions was categorized as either elevated (< 5 mm in height), flat, or depressed (not ulcerous). Superficial carcinoma (SC) was defi ned as a superfi cial lesion showing high-grade dysplasia or squamous cell carcinoma on histology. The color, delineation, and macroscopic appearances of the lesions were evaluated by CWL endoscopy. The ratio of the brownish area/intervascular brownish epithelium (IBE), as well as microvascular proliferation, dilation, and irregularities, was determined by non-magnifi ed/ magnifi ed NBI endoscopy. An experienced pathologist who was unaware of the endoscopic fi ndings made the histological diagnoses. By comparing endoscopic fi ndings with histology, we determined the endoscopic features of SC and evaluated the diagnostic utility of NBI. RESULTS: The 445 lesions were divided histologically into two groups: a non-SC group, including non-neoplasia and low-grade dysplasia cases, and an SC group. Of the 445 lesions examined, 333 were classified as non-SC and 112 were classif ied as SC. There were no significant differences in age, gender, or the location of the lesions between the patients in the two groups. The mean diameter of the SC lesions was signif icantly greater than that of non-SC lesions (11.0 ± 7.6 mm vs 4.6 ± 3.6 mm, respectively, P < 0.001). Comparisons of CWL endoscopy fi ndings for SC and non-SC lesions by univariate analysis revealed that the incidence of redness (72% vs 41%, respectively, P < 0.001) and a flat or depressed type of lesion (58% vs 44%, respectively, P = 0.013) was significantly higher in the SC group. Using non-magnifi ed NBI endoscopy, the incidence of a brownish area was signifi cantly higher for SC lesions (79% vs 57%, respectively, P < 0.001). On magnifi ed NBI endoscopy, the incidence of IBE (68% vs 33%, P < 0.001) and microvascular proliferation (82% vs 51%, P < 0.001), dilation (90% vs 76%, P =0.002), and irregularity (82% vs 31%, P < 0.001) was also signifi cantly higher for the SC compared with the non-SC lesions. Multivariate analysis revealed that the incidence of redness (P = 0.022) on CWL endoscopy and IBE (P < 0.001) and microvascular irregularities (P < 0.001) on magnif ied NBI endoscopy was signif icantly higher in SC than non-SC lesions. Redness alone exhibited signifi cantly higher sensitivity and signifi cantly lower specifi city for the diagnosis of SC compared with redness plus IBE and microvascular irregularities (72% vs 52%, P = 0.002; and 59% vs 92%, P < 0.001, respectively). The accuracy of redness plus IBE and irregularities for the diagnosis of SC was signifi cantly greater than using redness alone (82% vs 62%, respectively, P < 0.001). CONCLUSION: Redness, IBE, and microvascular irregularities appear to be closely related to SC lesions. Magnifi ed NBI endoscopy may increase the diagnostic accuracy of CWL endoscopy for SC.
文摘In this review, I outline the characteristic endoscopic findings of serrated lesions of the colorectum based on image enhanced endoscopy(IEE). Histopathologically, lesions with serrated structures are typically classified into the following three types based: hyperplastic polyps(HPs), traditional serrated adenomas(TSAs), and sessile serrated adenoma/polyps(SSA/Ps). Both HP and SSA/P often present as dark-green colors on auto fluorescence imaging(AFI) colonoscopy that are similar to the normal surrounding mucosa. In contrast, TSAs often have elevated shapes and present as magenta colors that are similar to the tubular adenomas. The superficial type of TSA also includes many lesions that present as magenta colors. When SSA/Ps are associated with cytological dysplasia, many lesions present with magenta colors, whereas lesions that are not associated with cytological dysplasia present with dark-green colors. When observed via narrow band imaging(NBI), many SSA/P include lesions with strong mucous adhesions. Because these lesions are observed with reddish mucous adhesions, we refer to them as "red cap sign" and place such signs among the typical findings of SSA/P. Because the dilatation of the pit in SSA/P is observed as a round/oval black dot on magnified observations, we refer to this finding as Ⅱ-dilatation pit(Ⅱ-D pit) and also positioned it as a characteristic finding of SSA/P. In contrast, dilatations of the capillary vessels surrounding the glands, such as those that occur in tubular adenoma, are not considered to be useful for differentiating HPs from SSA/Ps. However, in cases in which SSA/P is associated with cytological dysplasia, the dilatation of capillary vessels is observed in the same area. When submucosal layer invasion occurs in the same area, the blood flow presents with irregularities that are similar to those of common colorectal cancer at an early stage and disappears as the invasion proceeds deeply. The surface pattern of invasive cancer that is observed at the tumor surface is also likely to disappear. Based on the above results, we considered that the differentiations between HP and TSA, between TSA and SSA/P, and between HP and SSA/P might become easier due to the concomitant use of white light observation and IEE. We also concluded that AFI and NBI can be useful modalities for SSA/P lesions associated with cytological dysplasia.
文摘AIM:To evaluate the efficacy of computer-assisted color analysis of colorectal lesions using a novel auto-fluorescence imaging(AFI)system to distinguish neoplastic lesions from non-neoplastic lesions and to predict the depth of invasion.METHODS:From January 2013 to April 2013,consecutive patients with known polyps greater than 5 mm in size who were scheduled to undergo endoscopic treatment at The Jikei University Hospital were prospectively recruited for this study.All lesions were evaluated using a novel AFI system,and color-tone sampling was performed in a region of interest determined from narrow band imaging or from chromoendoscopy findings without magnification.The green/red(G/R)ratio for each lesion on the AFI images was calculated automatically using a computer-assisted color analysis system that permits real-time color analysis during endoscopic procedures.RESULTS:A total of 88 patients with 163 lesions were enrolled in this study.There were significant differences in the G/R ratios of hyperplastic polyps(non-neoplastic lesions),adenoma/intramucosal cancer/submucosal(SM)superficial cancer,and SM deep cancer(P<0.0001).The mean±SD G/R ratios were 0.984±0.118in hyperplastic polyps and 0.827±0.081 in neoplastic lesions.The G/R ratios of hyperplastic polyps were significantly higher than those of neoplastic lesions(P<0.001).When a G/R ratio cut-off value of>0.89 was applied to determine non-neoplastic lesions,the sensitivity,specificity,positive predictive value(PPV),negative predictive value(NPV),and accuracy were 83.9%,82.6%,53.1%,95.6%and 82.8%,respectively.For neoplastic lesions,the mean G/R ratio was 0.834±0.080 in adenoma/intramucosal cancer/SM superficial cancer and 0.746±0.045 in SM deep cancer.The G/R ratio of adenoma/intramucosal cancer/SM superficial cancer was significantly higher than that of SM deep cancer(P<0.01).When a G/R ratio cut-off value of<0.77 was applied to distinguish SM deep cancers,the sensitivity,specificity,PPV,NPV,and accuracy were80.0%,84.4%,29.6%,98.1%and 84.1%,respectively.CONCLUSION:The novel AFI system with color analysis was effective in distinguishing non-neoplastic lesions from neoplastic lesions and might allow determination of the depth of invasion.
文摘AIM: To investigate two distinct clinical phenotypes of reflux esophagitis and intra-hernial ulcer (Cameron lesions) in patients with large hiatal hernias. METHODS: A case series study was performed with 16 831 patients who underwent diagnostic esophagogastroduodenoscopy for 2 years at an academic referral center. A hiatus diameter ≥ 4 cm was defined as a large hernia. A sharp fold that surrounded the cardia was designated as an intact gastroesophageal flap valve (GEFV), and a loose fold or disappearance of the fold was classified as an impaired GEFV. We studied the associations between large hiatal hernias and the distinct clinical phenotypes (reflux esophagitis and Cameron lesions), and analyzed factors that distinguished the clinical phenotypes. RESULTS: Large hiatal hernias were found in 49 (0.3%) of 16 831 patients. Cameron lesions and reflux esopha-gitis were observed in 10% and 47% of these patients, and 0% and 8% of the patients without large hiatal hernias, which indicated significant associations between large hiatal hernias and these diseases. However, there was no coincidence of the two distinct disorders. Univariate analysis demonstrated significant associations between Cameron lesions and the clinico-endoscopic factors such as nonsteroidal anti-inflammatory drug (NSAID) intake (80% in Cameron lesion cases vs 18% in non-Cameron lesion cases, P=0.015) and intact GEFV (100% in Cameron lesion cases vs 18% in non-Cameron lesion cases, P=0.0007). In contrast, reflux esophagitis was linked with impaired GEFV (44% in reflux esophagitis cases vs 8% in non-reflux esophagitis cases, P = 0.01). Multivariate regression analysis confirmed these significant associations. CONCLUSION: GEFV status and NSAID intake distinguish clinical phenotypes of large hiatal hernias. Cameron lesions are associated with intact GEFV and NSAID intake.
文摘We are reporting a rare case of acute liver injury that developed after an internal hemorrhoid treatment with the aluminum potassium sulfate and tannic acid(ALTA) regimen. A 41-year-old man developed a fever and liver injury after undergoing internal hemorrhoid treatment with a submucosal injection of ALTA with lidocaine. The acute liver injury was classified clinically as hepatocellular and pathologically as cholestastic. We could not classify the mechanism of injury. High eosinophil and immunoglobulin E levels characterized the injury,and a drug lymphocyte stimulation test was negative on postoperative day 25. Fluid replacement for two weeks after hospitalization improved the liver injury. ALTA therapy involves injecting chemicals into the submucosa,from the rectum to the anus,and this is the first description of a case that developed a severe liver disorder after this treatment; hence,an analysis of future cases as they accumulate is desirable.
文摘AIM:To identify factors associated with prognosis of hepatocellular carcinoma(HCC) after initial therapy.METHODS:A total of 377 HCC patients who were newly treated at Katsushika Medical Center,Japan from January 2000 to December 2009 and followed up for > 2 years,or died during follow-up,were enrolled.The factors related to survival were first analyzed in 377 patients with HCC tumor stage T1-T4 using multivariate Cox proportional hazards regression analysis.A similar analysis was performed in 282 patients with tumor stage T1-T3.Additionally,factors associated with the period between initial and subsequent therapy were examined in 144 patients who did not show local recurrence.Finally,214 HCC stage T1-T3 patients who died during the observation period were classified into four groups according to their alcohol consumption and postprandial glucose levels,and differences in their causes of death were examined.RESULTS:On multivariate Cox proportional hazards regression analysis,the following were significantly associated with survival:underlying liver disease stage [non-cirrhosis/Child-Pugh A vs B/C,hazard ratio(HR):0.603,95% CI:0.417-0.874,P = 0.0079],HCC stage(T1/T2 vs T3/T4,HR:0.447,95% CI:0.347-0.576,P < 0.0001),and mean postprandial plasma glucose after initial therapy(< 200 vs ≥ 200 mg/dL,HR:0.181,95% CI:0.067-0.488,P = 0.0008).In T1-T3 patients,uninterrupted alcohol consumption after initial therapy(no vs yes,HR:0.641,95% CI:0.469-0.877,P = 0.0055) was significant in addition to underlying liver disease stage(non-cirrhosis/Child-Pugh A vs B/C,HR:0649,95% CI:0.476-0.885,P = 0.0068),HCC stage(T1 vs T2/T3,HR:0.788,95% CI:0.653-0.945,P = 0.0108),and mean postprandial plasma glucose after initial therapy(< 200 mg/dL vs ≥ 200 mg/dL,HR:0.502,95% CI:0.337-0.747,P = 0.0005).In patients without local recurrence,time from initial to subsequent therapy for newly emerging HCC was significantly longer in the "postprandial glucose within 200 mg/dL group" than the "postprandial glucose > 200 mg/dL group"(log-rank test,P < 0.05),whereas there was no difference in the period between the "non-alcohol group"(patients who did not drink regularly or those who could reduce their daily consumption to < 20 g) and the "continuation group"(drinkers who continued to drink > 20 g daily).Of 214 T1-T3 patients who died during the observation period,death caused by other than HCC progression was significantly more frequent in "group AL"(patients in the continuation and postprandial glucose within 200 mg/dL groups) than "group N"(patients in the non-alcohol and postprandial glucose within 200 mg/dL groups)(P = 0.0016).CONCLUSION:This study found that abstinence from habitual alcohol consumption and intensive care for diabetes mellitus were related to improved prognosis in HCC patients.
基金Supported by Grants in Aid for Scientific Research(C)from the Japanese Ministry of Education,Culture,Sports,Science,and Technology,No.23501289
文摘AIM:To investigate seasonal variations in the onset and relapse of ulcerative colitis(UC)in Japanese patients.METHODS:Between 1994 and 2006,198 Japanese patients diagnosed with UC according to conventional criteria in an academic hospital were enrolled for onset evaluation.Among 265 Japanese patients with UC who were observed for more than 12 mo,165 patients relapsed(239 times)and were enrolled for relapse evaluation.The patients’symptoms were recorded each month for 12 consecutive years.RESULTS:There was monthly seasonality in symptom onset during October and March for UC.The onset of symptoms in UC patients frequently occurred during the winter.Variation in UC onset was observed according to both month(P=0.015)and season(P=0.048).Relapse commonly occurred in October,and variations in relapse were not significant either in month(P=0.52)or season(P=0.12).Upper respiratory inflammation was the main factor responsible for relapse.CONCLUSION:Our results suggest that environmental factors associated with winter and spring seasonality may be responsible for triggering the clinical onset of UC in Japan.
文摘There are cases of hepatitis involving occult hepatitis B virus(HBV)infection in which,even though the HB surface antigen(HBsAg)is negative,HBV-DNA is detected by a polymerase chain reaction(PCR).We con-ducted a sequence analysis of the entire HBV region in a case of non-B non-C chronic hepatitis in a 46-yearold female.A diagnosis of non-B non-C chronic hepatitis was made.Although HBV markers,such as HBs antibody(anti-HBs),anti-HBc,HBeAg and anti-HBe,were negative,HBV-DNA was positive.Nested PCR was performed to amplify the precore region of HBV-DNA and all remaining regions by long nested PCR.Sequence analysis of the two obtained bands was conducted by direct sequencing.Compared with the control strains,the ATG(Methionine)start codon in the X region had mut ated to GTG(Valine).It is assumed that a mutation at the start codon in the X region may be the reason why HBV markers are negative in some cases of hepatitis that involve occult HBV infection.
文摘BACKGROUND Effective treatment of osteoporosis is essential for improving morbidity and health-related quality of life in chronic liver disease(CLD)patients.Denosumab has been shown to increase bone mineral density(BMD)and decrease the risk of osteoporotic fracture in the general population.However,there are few reports evaluating the efficacy of denosumab in CLD patients.AIM To investigated the effects and safety of denosumab in CLD patients with osteoporosis.METHODS Sixty CLD patients with osteoporosis were subcutaneously administered denosumab once every 6 mo.The study period for evaluating efficacy and safety was 12 mo.Changes from baseline in BMD at the lumbar spine,femoral neck,and total hip were evaluated at 12 mo of denosumab treatment.Bone turnover and quality were assessed by measuring serum tartrate-resistant acid phosphatase-5b(bone resorption marker),serum total procollagen type I N-terminal propeptide(bone formation maker),and plasma pentosidine(bone quality marker).RESULTS Among the 405 CLD patients,138(34.1%)patients were diagnosed with osteoporosis;among these,78 patients met the exclusion criteria and thus 60 patients were finally included in the present study.The median percentage changes from baseline to 12 mo of denosumab treatment in BMD at the lumbar spine,femoral neck,and total hip were+4.44%,+3.71%,and+4.03%,respectively.Denosumab significantly improved BMD,regardless of sex,patient age,and presence of liver cirrhosis.Serum tartrate-resistant acid phosphatase-5b and procollagen type I N-terminal propeptide levels constantly and significantly declined after denosumab treatment(P<0.001).Plasma pentosidine levels were also significantly lower at 12 mo of treatment(P=0.010).No patients experienced fractures and moderate-to-severe adverse events,except for transient hypocalcemia.CONCLUSION Denosumab treatment was safe and increased BMD,suppressed bone turnover,and improved bone quality marker levels in CLD patients with osteoporosis,irrespective of differences in baseline characteristics.
文摘AIM:To make clear whether CD147 (EMMPRIN) expression in pathological tumor samples with a fine-needle aspiration biopsy is useful for pathological diagnosis of early hepatocellular carcinoma (HCC). METHODS:Twenty-two patients (15 men and 7 women; median age 68 years,range 56-81 years) underwent a liver tissue biopsy in order to make a diagnosis of HCC. Paraffin-embedded liver biopsy tissue samples from 22 patients were stained with anti-CD147 antibody,murine monoclonal antibody 12C3 (MAb12C3) for immunohistochemical analysis. An immunohistochemical analysis of CD147 was performed and the degree of staining compared between tumor and non-tumor tissue. In addition,the degree of staining within tumor tissue was compared according to a number of clinicopathological variables. RESULTS:The degree of staining of CD147 was significantly higher in tumor tissues than non-tumor tissues,even in tumors less than 15 mm in diameter.The expression of this protein was significantly elevated in HCC tissue specimens from patients with a low value of serum AST and γ-GTP.
基金Supported by grants-in-aid from the University Start-Up Creation Support System,the Promotion and Mutual Aid Corporation for Private Schools of JapanThe Japan Health Sciences Foundation(Research on Health Sciences on Drug Innovation,KH71068)
文摘AIM： To develop the effective technology for reconstruction of a liver organ in vitro using a bio-artificial liver. METHODS： We previously reported that a radial-flow bioreactor （RFB） could provide a three-dimensional highdensity culture system. We presently reconstructed the liver organoid using a functional human hepatocellular carcinoma cell line （FLC-5） as hepatocytes together with mouse immortalized sinusoidal endothelial cell （SEC） line M1 and mouse immortalized hepatic stellate cell （HSC） line A7 as non parenchymal cells in the RFB. Two × 10^7 FLC-5 cells were incubated in the RFB. After 5 d, 2 × 10^7 A7 cells were added in a similar manner followed by another addition of 10^7 M1 cells 5 d later. After three days of perfusion, some cellulose beads with the adherent cells were harvested. The last incubation period included perfusion with 200 nmol/L swinholide A for 2 h and then the remaining cellulose beads along with adherent cells were harvested from the RFB. The cell morphology was observed by transmission electron microscopy （TEM） and scanning electron microscopy （SEM）. To assess hepatocyte function, we compared mRNA expression for urea cycle enzymes as well as albumin synthesis by FLC-5 in monolayer cultures compared to those of single-type cultures and cocultures in the RFB. RESULTS： By transmission electron microscopy, FLC-5, M1, and A7 were arranged in relation to the perfusion side in a liver-like organization. Structures resembling bile canaliculi were seen between FCL-5 cells. Scanning electron microscopy demonstrated fenestrae on SEC surfaces. The number of vesiculo-vacuolar organelles （WO） and fenestrae increased when we introduced the actin-binding agent swinholide-A in the RFB for 2h. With respect to liver function, urea was found in the medium, and expression of mRNAs encoding arginosuccinate synthetase and arginase increased when the three cell types were cocultured in the RFB. However, albumin synthesis decreased. CONCLUSION： Co-culture in the RFB system can dramatically change the structure and function of all cell types, including the functional characteristics of hepatocytes. Our system proves effective for reconstruction of a liver organoid using a bio-artificial liver.
文摘Low-frequency repetitive transcranial magnetic stimulation（LF-r TMS） to the contralesional hemisphere and intensive occupational therapy（i OT） have been shown to contribute to a significant improvement in upper limb hemiparesis in patients with chronic stroke. However, the effect of the combined intervention program of LF-r TMS and i OT on cognitive function is unknown. We retrospectively investigated whether the combined treatment influence patient＇s Trail-Making Test part B（TMT-B） performance, which is a group of easy and inexpensive neuropsychological tests that evaluate several cognitive functions. Twenty-five patients received 11 sessions of LF-r TMS to the contralesional hemisphere and 2 sessions of i OT per day over 15 successive days. Patients with right- and left-sided hemiparesis demonstrated significant improvements in upper limb motor function following the combined intervention program. Only patients with right-sided hemiparesis exhibited improved TMT-B performance following the combined intervention program, and there was a significant negative correlation between Fugl-Meyer Assessment scale total score change and TMT-B performance. The results indicate the possibility that LF-r TMS to the contralesional hemisphere combined with i OT improves the upper limb motor function and cognitive function of patients with right-sided hemiparesis. However, further studies are necessary to elucidate the mechanism of improved cognitive function.
基金Supported by a grant from The Jikei University School of Medicine and Japanese Society for Gastro-surgical Pathophysiology
文摘AIM To investigate the detrimental impact of loss of reservoir capacity by comparing total gastrectomy(TGRY) and distal gastrectomy with the same Rouxen-Y(DGRY) reconstruction. The study was conducted using an integrated questionnaire, the Postgastrectomy Syndrome Assessment Scale(PGSAS)-45, recently developed by the Japan Postgastrectomy Syndrome Working Party.METHODS The PGSAS-45 comprises 8 items from the Short Form-8, 15 from the Gastrointestinal Symptom Rating Scale, and 22 newly selected items. Uni-and multivariate analysis was performed on 868 questionnaires completed by patients who underwent either TGRY(n = 393) or DGRY(n = 475) for stage I gastric cancer(52 institutions). Multivariate analysis weighed of six explanatory variables, including the type of gastrectomy(TGRY/DGRY), interval after surgery, age, gender, surgical approach(laparoscopic/open), and whether the celiac branch of the vagus nerve was preserved/divided on the quality of life(QOL).RESULTS The patients who underwent TGRY experienced the poorer QOL compared to DGRY in the 15 of 19 main outcome measures of PGSAS-45. Moreover, multiple regression analysis indicated that the type of gastrectomy, TGRY, most strongly and broadly impaired the postoperative QOL among six explanatory variables. CONCLUSION The results of the present study suggested that TGRY had a certain detrimental impact on the postoperative QOL, and the loss of reservoir capacity could be a major cause.
