BACKGROUND Although the current conventional treatment strategies for esophageal carcinoma(EC)have been proven effective,they are often accompanied by serious adverse events.Therefore,it is still necessary to continue...BACKGROUND Although the current conventional treatment strategies for esophageal carcinoma(EC)have been proven effective,they are often accompanied by serious adverse events.Therefore,it is still necessary to continue to explore new therapeutic strategies for EC to improve the clinical outcome of patients.AIM To elucidate the clinical efficacy of concurrent chemoradiotherapy(CCRT)with thalidomide(THAL)and S-1(tegafur,gimeracil,and oteracil potassium capsules)in the treatment of EC as well as its influence on serum tumor markers(STMs).METHODS First,62 patients with EC treated at the Zibo 148 Hospital between November 2019 and November 2022 were selected and grouped according to the received treatment.Among these,30 patients undergoing CCRT with cis-platinum and 5-fluorouracil were assigned to the control group(Con),and 32 patients receiving CCRT with THAL and S-1 were assigned to the research group(Res).Second,inter-group comparisons were carried out with respect to curative efficacy,incidence of drug toxicities,STMs[carbohydrate antigen 125(CA125)and macrophage inflammatory protein-3α(MIP-3α)],angiogenesis-related indicators[vascular endothelial growth factor(VEGF);VEGF receptor-1(VEGFR-1);basic fibroblast growth factor(bFGF);angiogenin-2(Ang-2)],and quality of life(QoL)[QoL core 30(QLQ-C30)]after one month of treatment.RESULTS The analysis showed no statistical difference in the overall response rate and disease control rate between the two patient cohorts;however,the incidences of grade I–II myelosuppression and gastrointestinal reactions were significantly lower in the Res than in the Con.Besides,the post-treatment CA125,MIP-3α,VEGF,VEGFR-1,bFGF,and Ang-2 Levels in the Res were markedly lower compared with the pre-treatment levels and the corresponding post-treatment levels in the Con.Furthermore,more evident improvements in QLQ-C30 scores from the dimensions of physical,role,emotional,and social functions were determined in the Res.CONCLUSION The above results demonstrate the effectiveness of THAL+S-1 CCRT for EC,which contributes to mild side effects and significant reduction of CA125,MIP-3α,VEGF,VEGFR-1,bFGF,and Ang-2 Levels,thus inhibiting tumors from malignant progression and enhancing patients’QoL.展开更多
BACKGROUND Gastric cancer(GC)is one of the most common cancers worldwide.Morbidity and mortality have increased in recent years,making it an urgent issue to address.La-paroscopic radical surgery(LRS)is a crucial metho...BACKGROUND Gastric cancer(GC)is one of the most common cancers worldwide.Morbidity and mortality have increased in recent years,making it an urgent issue to address.La-paroscopic radical surgery(LRS)is a crucial method for treating patients with GC;However,its influence on tumor markers is still under investigation.The data of 194 patients treated at Chongqing University Cancer Hospital bet-ween January 2018 and January 2019 were retrospectively analyzed.Patients who underwent traditional open surgery and LRS were assigned to the control(n=90)and observation groups(n=104),respectively.Independent sample t-tests andχ2 tests were used to compare the two groups based on clinical efficacy,changes in tumor marker levels after treatment,clinical data,and the incidence of posto-perative complications.To investigate the association between tumor marker levels and clinical efficacy in patients with GC,three-year recurrence rates in the two groups were compared.RESULTS Patients in the observation group had a shorter duration of operation,less in-traoperative blood loss,an earlier postoperative eating time,and a shorter hospital stay than those in the control group(P<0.05).No significant difference was observed between the two groups regarding the number of lymph node dissections(P>0.05).After treatment,the overall response rate in the control group was significantly lower than that in the observation group(P=0.001).Furthermore,after treatment,the levels of carbohydrate antigen 19-9,cancer antigen 72-4,carcinoembryonic antigen,and cancer antigen 125 decreased significantly.The observation group also exhibited a significantly lower incidence rate of postoperative complications compared to the control group(P<0.001).Additionally,the two groups did not significantly differ in terms of three-year survival and recurrence rates(P>0.05).CONCLUSION LRS effectively treats early gastric cancer by reducing intraoperative bleeding,length of hospital stays,and postoperative complications.It also significantly lowers tumor marker levels,thus improving the short-term prognosis of the disease.展开更多
BACKGROUND The Baveno VI criteria for predicting esophageal varices, i.e., liver stiffness measurement (LSM)< 20 kPa and platelet (PLT) count > 150 × 109/L, identify patients who can safely avoid gastroscop...BACKGROUND The Baveno VI criteria for predicting esophageal varices, i.e., liver stiffness measurement (LSM)< 20 kPa and platelet (PLT) count > 150 × 109/L, identify patients who can safely avoid gastroscopy screening. However, they require further refinement. AIM To evaluate the utility of LSM and serum markers of liver fibrosis in ruling out high-risk varices (HRV) in patients who do not meet Baveno VI criteria. METHODS Data from 132 patients with hepatitis B virus (HBV)-related compensated liver cirrhosis who did not meet the Baveno VI criteria were retrospectively reviewed. MedCalc 15.8 was used to calculate receiver operating characteristic (ROC) curves, and the accuracy of LSM, PLT count, aspartate aminotransferase (AST)- to-PLT ratio index, Fibrosis-4, and the Lok index in predicting HRV were evaluated according to the area under each ROC curve (AUROC). The utility of LSM, PLT, and serum markers of liver fibrosis stratified by alanine transaminase (ALT) and total bilirubin (TBil) levels was evaluated for ruling out HRV. RESULTS In all patients who did not meet the Baveno VI criteria, the independent risk factors for HRV were LSM and ALT. Only the AUROC of Lok index was above 0.7 for predicting HRV, and at a cutoff value of 0.4531 it could further spare 24.2% of gastroscopies without missing HRVs. The prevalence of HRV was significantly lower in patients with ALT or TBil ≥ 2 upper limit of normal (ULN)(14.3%) than in patients with both ALT and TBil < 2 ULN (34.1%)(P = 0.018). In the 41 patients with ALT and TBil < 2 ULN, LSM had an AUROC for predicting HRV of 0.821. LSM < 20.6 kPa spared 39.0% of gastroscopies without missing HRVs. In the 91 patients with ALT or TBiL ≥ 2 ULN, the Lok index and PLT had AUROCs of 0.814 and 0.741, respectively. Lok index ≤ 0.5596 or PLT > 100 × 109/L further spared 39.6% and 43.9% of gastroscopies, respectively, without missing HRVs. CONCLUSION In HBV-related compensated cirrhosis patients who do not meet Baveno VI criteria, the LSM, PLT, or Lok index cutoff stratified by ALT and TBil accurately identifies more patients without HRV.展开更多
Currently, a major clinical challenge in the management of the increasing number of hepatitis C virus(HCV) infected patients is determining the best means for evaluating liver impairment. Prognosis and treatment of ch...Currently, a major clinical challenge in the management of the increasing number of hepatitis C virus(HCV) infected patients is determining the best means for evaluating liver impairment. Prognosis and treatment of chronic hepatitis C(CHC) are partly dependent on the assessment of histological activity, namely cell necrosis and inflammation, and the degree of liver fibrosis. These parameters can be provided by liver biopsy; however, in addition to the risks related to an invasive procedure, liver biopsy has been associated with sampling error mostly due to suboptimal biopsy size. To avoid these pitfalls, several markers have been proposed as non-invasive alternatives for the diagnosis of liver damage. Distinct approaches among the currently available non-invasive methods are(1) the physical ones based on imaging techniques; and(2) the biological ones based on serum biomarkers. In this review, we discuss these approaches with special focus on currently available non-invasive serum markers. We will discuss:(1) class?Ⅰ?serum biomarkers individually and as combined panels, particularly those that mirror the metabolism of liver extracellular matrix turnover and/or fibrogenic cell changes;(2) class Ⅱ biomarkers that are indirect serum markers and are based on the evaluation of common functional alterations in the liver; and(3) biomarkers of liver cell death, since hepatocyte apoptosis plays a significant role in the pathogenesis of HCV infection. We highlight in this review the evidence behind the use of these markers and assess the diagnostic accuracy as well as advantages, limitations, and application in clinical practice of each test for predicting liver damage in CHC.展开更多
The technology based on specific PCR amplification using internal transcribed spacer 2 of nuclear ribosomal DNA for molecular identification and detection of Trichogramma species was studied. Firstly the ITS2s of six ...The technology based on specific PCR amplification using internal transcribed spacer 2 of nuclear ribosomal DNA for molecular identification and detection of Trichogramma species was studied. Firstly the ITS2s of six Trichogramma species were cloned and sequenced, and the interspecific sequence variation was analyzed. Secondly the ITS2 regions of six geographical populations of T. dendrolimi were cloned and sequenced, and the intraspecific sequence identity was analyzed. The results show that the interspecific variation and intraspecific similarity of ITS2 sequences are very suitable for designation of specific primers at specieslevel. Screening of specific primers for T. dendrolimi leads to final sensitive and stable diagnostic primers. This system lets non-specialists can not only identify adults (males and females), but also identify eggs in parasitized hosts rapidly and accurately, which is impossible by conventional methods. Further development of this protocol can create a complete set of specific primers for different species of the whole genus Trichogramma.展开更多
In recent years, the clinical incidence of thyroid cancer has been increasing year by year, and its risk assessment and clinical management methods have also been accordingly modified and constantly improved. There ar...In recent years, the clinical incidence of thyroid cancer has been increasing year by year, and its risk assessment and clinical management methods have also been accordingly modified and constantly improved. There are great differences between the clinical diagnostic and therapeutic modes and disease management of thyroid cancer employed by various medical institutions in China, particularly with regard to the clinical application of serum marker of thyroid cancer. To this end, the China Anti-Cancer Association Thyroid Cancer Specialized Committee Chinese Association of Thyroid Oncology organized this compilation of ExpertConsensus on Clinical Application of Serum Marker of Thyroid Cancer to help and impel relevant clinical institutions and professionals to standardize clinical diagnosis, treatment, and long-term management of thyroid cancer, and to properly utilize the serum marker for scientific auxiliary clinical diagnosis and assessment of thyroid cancer before and after operation.展开更多
AIM:To evaluate the correlation between liver stiffness measurement(LSM)by real-time shear wave elastography(SWE)and liver fibrosis stage and the accuracy of LSM for predicting significant and advanced fibrosis,in com...AIM:To evaluate the correlation between liver stiffness measurement(LSM)by real-time shear wave elastography(SWE)and liver fibrosis stage and the accuracy of LSM for predicting significant and advanced fibrosis,in comparison with serum markers.METHODS:We consecutively analyzed 70 patients with various chronic liver diseases.Liver fibrosis was staged from F0 to F4 according to the Batts and Ludwig scoring system.Significant and advanced fibrosis was defined as stage F≥2 and F≥3,respectively.The accuracy of prediction for fibrosis was analyzed using receiver operating characteristic curves.RESULTS:Seventy patients,15 were belonged to F0-F1 stage,20 F2,13 F3 and 22 F4.LSM was increased with progression of fibrosis stage(F0-F1:6.77±1.72,F2:9.98±3.99,F3:15.80±7.73,and F4:22.09±10.09,P<0.001).Diagnostic accuracies of LSM for prediction of F≥2 and F≥3 were 0.915(95%CI:0.824-0.968,P<0.001)and 0.913(95%CI:0.821-0.967,P<0.001),respectively.The cut-off values of LSM for prediction of F≥2 and F≥3 were 8.6kPa with 78.2%sensitivity and 93.3%specificity and10.46 kPa with 88.6%sensitivity and 80.0%specificity,respectively.However,there were no significant differences between LSM and serum hyaluronic acid and typeⅣcollagen in diagnostic accuracy.CONCLUSION:SWE showed a significant correlation with the severity of liver fibrosis and was useful and accurate to predict significant and advanced fibrosis,comparable with serum markers.展开更多
AIM:To investigate impairment and clinical significance of exocrine and endocrine pancreatic function in patients after acute pancreatitis(AP).METHODS:Patients with AP were invited to participate in the study.Severity...AIM:To investigate impairment and clinical significance of exocrine and endocrine pancreatic function in patients after acute pancreatitis(AP).METHODS:Patients with AP were invited to participate in the study.Severity of AP was determined by the Atlanta classification and definitions revised in2012.Pancreatic exocrine insufficiency(PEI)was diagnosed by the concentration of fecal elastase-1.An additional work-up,including laboratory testing of serum nutritional markers for determination ofmalnutrition,was offered to all patients with low levels of fecal elastase-1 FE.Hemoglobin A1c or oral glucose tolerance tests were also performed in patients without prior diabetes mellitus,and type 3c diabetes mellitus(T3c DM)was diagnosed according to American Diabetes Association criteria.RESULTS:One hundred patients were included in the study:75%(75/100)of patients had one attack of AP and 25%(25/100)had two or more attacks.The most common etiology was alcohol.Mild,moderately severe and severe AP were present in 67,15 and 18%of patients,respectively.The mean time from attack of AP to inclusion in the study was 2.7 years.PEI was diagnosed in 21%(21/100)of patients and T3c DM in14%(14/100)of patients.In all patients with PEI,at least one serologic nutritional marker was below the lower limit of normal.T3c DM was more frequently present in patients with severe AP(P=0.031),but was also present in some patients with mild and moderately severe AP.PEI was present in all degrees of severity of AP.There were no statistically significantly differences according to gender,etiology and number of AP attacks.CONCLUSION:As exocrine and endocrine pancreatic insufficiency can develop after AP,routine follow-up of patients is necessary,for which serum nutritional panel measurements can be useful.展开更多
BACKGROUND:The current methods used for diagnosing hepatocellular carcinoma(HCC)are unsatisfactory.Here,we assessed the serum levels of secreted frizzled related protein 4(s FRP-4)for diagnosing HCC in patients infect...BACKGROUND:The current methods used for diagnosing hepatocellular carcinoma(HCC)are unsatisfactory.Here,we assessed the serum levels of secreted frizzled related protein 4(s FRP-4)for diagnosing HCC in patients infected with chronic hepatitis B(CHB).METHODS:In 272 patients with CHB enrolled,142 were pa tients with HCC.Thirty-three healthy subjects were recruited as healthy controls.The CHB patients were assigned to a展开更多
Two female-specific AFLP(amplified fragment length polymorphism)markers(named CseF464 and CseF136)were isolated by using one selective primer combination(E-AGC/M-CTG)from the genomic DNA of 20 females and 20 males of ...Two female-specific AFLP(amplified fragment length polymorphism)markers(named CseF464 and CseF136)were isolated by using one selective primer combination(E-AGC/M-CTG)from the genomic DNA of 20 females and 20 males of the half-smooth tongue sole Cynoglossus semilaevis.Both the markers were re-amplified,recovered from the agarose gels,cloned and sequenced.Bioinformatics analysis indicated that the length of the two markers were 468 bp and 134 bp,respectively,and the sequences showed no similarity to each other,as well as to the known sequences deposited in the GenBank database using BLASTn.Two pairs of SCAR(sequence characterized amplified regions)primers were designed based on the sequences of the two female-specific markers.Furthermore,PCR-based genetic sex identification method was developed in Cynoglossus semilaevis.A specific fragment was amplified in all females but not in any males by using these SCAR primers on the initial 20 female and 20 male individuals of Cynoglossus semilaevis.The feasibility of the two SCAR primer pairs was confirmed in additional 100 individuals(50 females and 50 males).This allowed for reliable,rapid molecular identification of genetic sex of the species,genetic mapping on the sex chromosomes and better understanding of the sex determination and sex differentiation in the half-smooth tongue sole.展开更多
Summary: In order to study the relationship between serum specific IgE (sIgE) and allergen skin test, allergen skin tests and detections of sIgE in 220 allergic patients of Wuhan area were analyzed. The coherent rate ...Summary: In order to study the relationship between serum specific IgE (sIgE) and allergen skin test, allergen skin tests and detections of sIgE in 220 allergic patients of Wuhan area were analyzed. The coherent rate of the two methods was beyond 70 % (P<0.01). It was concluded that the in vitro and in vivo detection methods of allergens have a high coherence and can be used as the effective ways to diagnose the allergic diseases in clinical practice.展开更多
Marker-free GFP transgenic tobacco plants were constructed based on Cre/lox site-specific recombination system. A GFP gene was introduced into the tobacco genome using the Bar gene as a linked selectable marker flanke...Marker-free GFP transgenic tobacco plants were constructed based on Cre/lox site-specific recombination system. A GFP gene was introduced into the tobacco genome using the Bar gene as a linked selectable marker flanked by recombination sites in a directed orientation. The Bar gene expression box was subsequently excised from the plant genome by a strategy of Cre gene retransformation. After removal of the Cre-NPT Ⅱ locus by genetic segregation through self-cross,plants that incorporated only the GFP transgene were obtained. Transgenic tobacco plants mediated by Agrobacterium tumefaciens were obtained,which resisted herbicide Basta and GFP expressed well,then the Cre gene was subsequently introduced into 5 plants of them,respectively,by retransformation. The leaf disks from Cre transgenic plants were used to test the resistance to Basta on the medium with 8 mg L-1 of PPT. The results showed that few discs were able to regenerate normally,and the excision at 76-100% efficiency depended on individual retransformation events. Evidence for a precise recombination event was confirmed by cloning the nucleotides sequence surrounding the lox sites of the Basta sensitive plants. The result indicated that the excision event in the recombination sites was precise and conservative,without loss or alteration of any submarginal nucleotides of the recombination sites. Bar gene excised plants were self-pollinated to allow segregation of the GFP gene from the Cre-NPT Ⅱ locus. The progenies from self-pollinated plants were scored for Kan senstivity,then the segregation of GFP gene from Cre-NPT Ⅱ locus in the Kan senstive plants were confirmed by PCR analysis subsequently. Hence,constructing marker-free transgenic tobacco plants by Cre/lox site-specific recombination system was reliable,and the strategy presented here should be applicable to other plants for the construction of marker-free transgenic plants as well.展开更多
Objective:To identify potential serum markers of hepatic carcinoma in rats through Surface-Enhanced Laser Desorption Ioniza- tion-Time of Flight-Mass Spectrometry(SELDI-TOF-MS)Technology.Methods:A rat model of hepatic...Objective:To identify potential serum markers of hepatic carcinoma in rats through Surface-Enhanced Laser Desorption Ioniza- tion-Time of Flight-Mass Spectrometry(SELDI-TOF-MS)Technology.Methods:A rat model of hepatic carcinoma was established. The serum samples of hepatic carcinoma and normal rats were analyzed via SELDI-TOF-MS Technology.The changes of the serum protein fingerprint patterns were observed between the experimental group of hepatic carcinoma and the controls.The analysis was conducted by statistical software-Biomarker Wizard.Results:Fifty-six protein peaks in the serums were found.Within m/z 0-20 000, the protein peaks of m/z 1158,8 835 and 15 302 of hepatic carcinoma serums were obviously higher in the rat models compared with those in the controls(P<0.01).Conclusion:Three peaks were considered as potential biomarkers according to the serum protein fingerprint patterns of the hepatic carcinoma group and the control group.展开更多
Stem lignin content(SLC) in common wheat(Triticum aestivum L.) contributes to lodging resistance. Caffeic acid 3-O-methyltransferase(COMT) is a key enzyme involved in lignin biosynthesis. Characterization of TaCOMT ge...Stem lignin content(SLC) in common wheat(Triticum aestivum L.) contributes to lodging resistance. Caffeic acid 3-O-methyltransferase(COMT) is a key enzyme involved in lignin biosynthesis. Characterization of TaCOMT genes and development of gene-specific markers could enable marker-assisted selection in wheat breeding. In the present study, the full-length genomic DNA(gDNA) sequences of TaCOMT genes located on chromosomes 3 A, 3 B, and 3 D were cloned by homologous cloning. Two allelic variants, TaCOMT-3 Ba and TaCOMT-3 Bb, were identified and differed by a 222-bp insertion/deletion(InDel) in the 3′-untranslated region(3′-UTR). A co-dominant gene-specific marker based on this InDel was developed and designated as Ta COMT-3 BM. A total of 157 wheat cultivars and advanced lines grown in four environments were used to validate the associations between allelic patterns and SLC. The SLC of cultivars with TaCOMT-3 Ba was significantly(P<0.01) higher than that of those with TaCOMT-3 Bb, and the marker TaCOMT-3 BM could be effectively used in wheat breeding.展开更多
In the present study, the genetic distances between 85 superior clones from seven natural populations of Pinus kesiya var. langbianensis were analyzed by RAPD-PCR assays, and then, a UPGMA cluster diagram was establis...In the present study, the genetic distances between 85 superior clones from seven natural populations of Pinus kesiya var. langbianensis were analyzed by RAPD-PCR assays, and then, a UPGMA cluster diagram was established based on the genetic distances to reveal their genetic relationship. In addition, specific markers of elite clones were identified by carefully comparing the fingerprints of the 85 clones. The results showed that the 85 P. kesiya clones were divided into three groups at a genetic distance of 0.59. Two specific markers that were able to distinguish some elite clones from others were identified. The results may provide a molecular basis for the identification and selection of elite clones of Pinus kesiya var. langbianensis.展开更多
文摘BACKGROUND Although the current conventional treatment strategies for esophageal carcinoma(EC)have been proven effective,they are often accompanied by serious adverse events.Therefore,it is still necessary to continue to explore new therapeutic strategies for EC to improve the clinical outcome of patients.AIM To elucidate the clinical efficacy of concurrent chemoradiotherapy(CCRT)with thalidomide(THAL)and S-1(tegafur,gimeracil,and oteracil potassium capsules)in the treatment of EC as well as its influence on serum tumor markers(STMs).METHODS First,62 patients with EC treated at the Zibo 148 Hospital between November 2019 and November 2022 were selected and grouped according to the received treatment.Among these,30 patients undergoing CCRT with cis-platinum and 5-fluorouracil were assigned to the control group(Con),and 32 patients receiving CCRT with THAL and S-1 were assigned to the research group(Res).Second,inter-group comparisons were carried out with respect to curative efficacy,incidence of drug toxicities,STMs[carbohydrate antigen 125(CA125)and macrophage inflammatory protein-3α(MIP-3α)],angiogenesis-related indicators[vascular endothelial growth factor(VEGF);VEGF receptor-1(VEGFR-1);basic fibroblast growth factor(bFGF);angiogenin-2(Ang-2)],and quality of life(QoL)[QoL core 30(QLQ-C30)]after one month of treatment.RESULTS The analysis showed no statistical difference in the overall response rate and disease control rate between the two patient cohorts;however,the incidences of grade I–II myelosuppression and gastrointestinal reactions were significantly lower in the Res than in the Con.Besides,the post-treatment CA125,MIP-3α,VEGF,VEGFR-1,bFGF,and Ang-2 Levels in the Res were markedly lower compared with the pre-treatment levels and the corresponding post-treatment levels in the Con.Furthermore,more evident improvements in QLQ-C30 scores from the dimensions of physical,role,emotional,and social functions were determined in the Res.CONCLUSION The above results demonstrate the effectiveness of THAL+S-1 CCRT for EC,which contributes to mild side effects and significant reduction of CA125,MIP-3α,VEGF,VEGFR-1,bFGF,and Ang-2 Levels,thus inhibiting tumors from malignant progression and enhancing patients’QoL.
基金The study was reviewed and approved by the Ethics Committee of the Chongqing University Cancer Hospital(Approval No.CZLS2023170-A).
文摘BACKGROUND Gastric cancer(GC)is one of the most common cancers worldwide.Morbidity and mortality have increased in recent years,making it an urgent issue to address.La-paroscopic radical surgery(LRS)is a crucial method for treating patients with GC;However,its influence on tumor markers is still under investigation.The data of 194 patients treated at Chongqing University Cancer Hospital bet-ween January 2018 and January 2019 were retrospectively analyzed.Patients who underwent traditional open surgery and LRS were assigned to the control(n=90)and observation groups(n=104),respectively.Independent sample t-tests andχ2 tests were used to compare the two groups based on clinical efficacy,changes in tumor marker levels after treatment,clinical data,and the incidence of posto-perative complications.To investigate the association between tumor marker levels and clinical efficacy in patients with GC,three-year recurrence rates in the two groups were compared.RESULTS Patients in the observation group had a shorter duration of operation,less in-traoperative blood loss,an earlier postoperative eating time,and a shorter hospital stay than those in the control group(P<0.05).No significant difference was observed between the two groups regarding the number of lymph node dissections(P>0.05).After treatment,the overall response rate in the control group was significantly lower than that in the observation group(P=0.001).Furthermore,after treatment,the levels of carbohydrate antigen 19-9,cancer antigen 72-4,carcinoembryonic antigen,and cancer antigen 125 decreased significantly.The observation group also exhibited a significantly lower incidence rate of postoperative complications compared to the control group(P<0.001).Additionally,the two groups did not significantly differ in terms of three-year survival and recurrence rates(P>0.05).CONCLUSION LRS effectively treats early gastric cancer by reducing intraoperative bleeding,length of hospital stays,and postoperative complications.It also significantly lowers tumor marker levels,thus improving the short-term prognosis of the disease.
基金Supported by the National Natural Science Foundation of China,No.81860114
文摘BACKGROUND The Baveno VI criteria for predicting esophageal varices, i.e., liver stiffness measurement (LSM)< 20 kPa and platelet (PLT) count > 150 × 109/L, identify patients who can safely avoid gastroscopy screening. However, they require further refinement. AIM To evaluate the utility of LSM and serum markers of liver fibrosis in ruling out high-risk varices (HRV) in patients who do not meet Baveno VI criteria. METHODS Data from 132 patients with hepatitis B virus (HBV)-related compensated liver cirrhosis who did not meet the Baveno VI criteria were retrospectively reviewed. MedCalc 15.8 was used to calculate receiver operating characteristic (ROC) curves, and the accuracy of LSM, PLT count, aspartate aminotransferase (AST)- to-PLT ratio index, Fibrosis-4, and the Lok index in predicting HRV were evaluated according to the area under each ROC curve (AUROC). The utility of LSM, PLT, and serum markers of liver fibrosis stratified by alanine transaminase (ALT) and total bilirubin (TBil) levels was evaluated for ruling out HRV. RESULTS In all patients who did not meet the Baveno VI criteria, the independent risk factors for HRV were LSM and ALT. Only the AUROC of Lok index was above 0.7 for predicting HRV, and at a cutoff value of 0.4531 it could further spare 24.2% of gastroscopies without missing HRVs. The prevalence of HRV was significantly lower in patients with ALT or TBil ≥ 2 upper limit of normal (ULN)(14.3%) than in patients with both ALT and TBil < 2 ULN (34.1%)(P = 0.018). In the 41 patients with ALT and TBil < 2 ULN, LSM had an AUROC for predicting HRV of 0.821. LSM < 20.6 kPa spared 39.0% of gastroscopies without missing HRVs. In the 91 patients with ALT or TBiL ≥ 2 ULN, the Lok index and PLT had AUROCs of 0.814 and 0.741, respectively. Lok index ≤ 0.5596 or PLT > 100 × 109/L further spared 39.6% and 43.9% of gastroscopies, respectively, without missing HRVs. CONCLUSION In HBV-related compensated cirrhosis patients who do not meet Baveno VI criteria, the LSM, PLT, or Lok index cutoff stratified by ALT and TBil accurately identifies more patients without HRV.
基金Supported by Argentine National Agency for Scientific and Technology PromotionPICT 2012 No.804+3 种基金National Research Council(CONICETPIP 2014)No.0035a fellowship from the National Agency for Science and Technology Promotion(ANPCy T)to Ríos DA
文摘Currently, a major clinical challenge in the management of the increasing number of hepatitis C virus(HCV) infected patients is determining the best means for evaluating liver impairment. Prognosis and treatment of chronic hepatitis C(CHC) are partly dependent on the assessment of histological activity, namely cell necrosis and inflammation, and the degree of liver fibrosis. These parameters can be provided by liver biopsy; however, in addition to the risks related to an invasive procedure, liver biopsy has been associated with sampling error mostly due to suboptimal biopsy size. To avoid these pitfalls, several markers have been proposed as non-invasive alternatives for the diagnosis of liver damage. Distinct approaches among the currently available non-invasive methods are(1) the physical ones based on imaging techniques; and(2) the biological ones based on serum biomarkers. In this review, we discuss these approaches with special focus on currently available non-invasive serum markers. We will discuss:(1) class?Ⅰ?serum biomarkers individually and as combined panels, particularly those that mirror the metabolism of liver extracellular matrix turnover and/or fibrogenic cell changes;(2) class Ⅱ biomarkers that are indirect serum markers and are based on the evaluation of common functional alterations in the liver; and(3) biomarkers of liver cell death, since hepatocyte apoptosis plays a significant role in the pathogenesis of HCV infection. We highlight in this review the evidence behind the use of these markers and assess the diagnostic accuracy as well as advantages, limitations, and application in clinical practice of each test for predicting liver damage in CHC.
文摘The technology based on specific PCR amplification using internal transcribed spacer 2 of nuclear ribosomal DNA for molecular identification and detection of Trichogramma species was studied. Firstly the ITS2s of six Trichogramma species were cloned and sequenced, and the interspecific sequence variation was analyzed. Secondly the ITS2 regions of six geographical populations of T. dendrolimi were cloned and sequenced, and the intraspecific sequence identity was analyzed. The results show that the interspecific variation and intraspecific similarity of ITS2 sequences are very suitable for designation of specific primers at specieslevel. Screening of specific primers for T. dendrolimi leads to final sensitive and stable diagnostic primers. This system lets non-specialists can not only identify adults (males and females), but also identify eggs in parasitized hosts rapidly and accurately, which is impossible by conventional methods. Further development of this protocol can create a complete set of specific primers for different species of the whole genus Trichogramma.
文摘In recent years, the clinical incidence of thyroid cancer has been increasing year by year, and its risk assessment and clinical management methods have also been accordingly modified and constantly improved. There are great differences between the clinical diagnostic and therapeutic modes and disease management of thyroid cancer employed by various medical institutions in China, particularly with regard to the clinical application of serum marker of thyroid cancer. To this end, the China Anti-Cancer Association Thyroid Cancer Specialized Committee Chinese Association of Thyroid Oncology organized this compilation of ExpertConsensus on Clinical Application of Serum Marker of Thyroid Cancer to help and impel relevant clinical institutions and professionals to standardize clinical diagnosis, treatment, and long-term management of thyroid cancer, and to properly utilize the serum marker for scientific auxiliary clinical diagnosis and assessment of thyroid cancer before and after operation.
基金Supported by Research fund of the Hanyang University,No.HY-2010-G
文摘AIM:To evaluate the correlation between liver stiffness measurement(LSM)by real-time shear wave elastography(SWE)and liver fibrosis stage and the accuracy of LSM for predicting significant and advanced fibrosis,in comparison with serum markers.METHODS:We consecutively analyzed 70 patients with various chronic liver diseases.Liver fibrosis was staged from F0 to F4 according to the Batts and Ludwig scoring system.Significant and advanced fibrosis was defined as stage F≥2 and F≥3,respectively.The accuracy of prediction for fibrosis was analyzed using receiver operating characteristic curves.RESULTS:Seventy patients,15 were belonged to F0-F1 stage,20 F2,13 F3 and 22 F4.LSM was increased with progression of fibrosis stage(F0-F1:6.77±1.72,F2:9.98±3.99,F3:15.80±7.73,and F4:22.09±10.09,P<0.001).Diagnostic accuracies of LSM for prediction of F≥2 and F≥3 were 0.915(95%CI:0.824-0.968,P<0.001)and 0.913(95%CI:0.821-0.967,P<0.001),respectively.The cut-off values of LSM for prediction of F≥2 and F≥3 were 8.6kPa with 78.2%sensitivity and 93.3%specificity and10.46 kPa with 88.6%sensitivity and 80.0%specificity,respectively.However,there were no significant differences between LSM and serum hyaluronic acid and typeⅣcollagen in diagnostic accuracy.CONCLUSION:SWE showed a significant correlation with the severity of liver fibrosis and was useful and accurate to predict significant and advanced fibrosis,comparable with serum markers.
文摘AIM:To investigate impairment and clinical significance of exocrine and endocrine pancreatic function in patients after acute pancreatitis(AP).METHODS:Patients with AP were invited to participate in the study.Severity of AP was determined by the Atlanta classification and definitions revised in2012.Pancreatic exocrine insufficiency(PEI)was diagnosed by the concentration of fecal elastase-1.An additional work-up,including laboratory testing of serum nutritional markers for determination ofmalnutrition,was offered to all patients with low levels of fecal elastase-1 FE.Hemoglobin A1c or oral glucose tolerance tests were also performed in patients without prior diabetes mellitus,and type 3c diabetes mellitus(T3c DM)was diagnosed according to American Diabetes Association criteria.RESULTS:One hundred patients were included in the study:75%(75/100)of patients had one attack of AP and 25%(25/100)had two or more attacks.The most common etiology was alcohol.Mild,moderately severe and severe AP were present in 67,15 and 18%of patients,respectively.The mean time from attack of AP to inclusion in the study was 2.7 years.PEI was diagnosed in 21%(21/100)of patients and T3c DM in14%(14/100)of patients.In all patients with PEI,at least one serologic nutritional marker was below the lower limit of normal.T3c DM was more frequently present in patients with severe AP(P=0.031),but was also present in some patients with mild and moderately severe AP.PEI was present in all degrees of severity of AP.There were no statistically significantly differences according to gender,etiology and number of AP attacks.CONCLUSION:As exocrine and endocrine pancreatic insufficiency can develop after AP,routine follow-up of patients is necessary,for which serum nutritional panel measurements can be useful.
基金supported by grants from the Nationa Natural Science Foundation of China(81071694)the State Key Project specialized for HBV-related severe hepatitis of China(2012ZX10002004)
文摘BACKGROUND:The current methods used for diagnosing hepatocellular carcinoma(HCC)are unsatisfactory.Here,we assessed the serum levels of secreted frizzled related protein 4(s FRP-4)for diagnosing HCC in patients infected with chronic hepatitis B(CHB).METHODS:In 272 patients with CHB enrolled,142 were pa tients with HCC.Thirty-three healthy subjects were recruited as healthy controls.The CHB patients were assigned to a
基金supported by grants from State High-Technology R&D Project of China(863)(2006AA10A403)Shandong Genetic Improvement Key Project for Agricultural Organism,and Taishan Scholar Project of Shandong Province
文摘Two female-specific AFLP(amplified fragment length polymorphism)markers(named CseF464 and CseF136)were isolated by using one selective primer combination(E-AGC/M-CTG)from the genomic DNA of 20 females and 20 males of the half-smooth tongue sole Cynoglossus semilaevis.Both the markers were re-amplified,recovered from the agarose gels,cloned and sequenced.Bioinformatics analysis indicated that the length of the two markers were 468 bp and 134 bp,respectively,and the sequences showed no similarity to each other,as well as to the known sequences deposited in the GenBank database using BLASTn.Two pairs of SCAR(sequence characterized amplified regions)primers were designed based on the sequences of the two female-specific markers.Furthermore,PCR-based genetic sex identification method was developed in Cynoglossus semilaevis.A specific fragment was amplified in all females but not in any males by using these SCAR primers on the initial 20 female and 20 male individuals of Cynoglossus semilaevis.The feasibility of the two SCAR primer pairs was confirmed in additional 100 individuals(50 females and 50 males).This allowed for reliable,rapid molecular identification of genetic sex of the species,genetic mapping on the sex chromosomes and better understanding of the sex determination and sex differentiation in the half-smooth tongue sole.
文摘Summary: In order to study the relationship between serum specific IgE (sIgE) and allergen skin test, allergen skin tests and detections of sIgE in 220 allergic patients of Wuhan area were analyzed. The coherent rate of the two methods was beyond 70 % (P<0.01). It was concluded that the in vitro and in vivo detection methods of allergens have a high coherence and can be used as the effective ways to diagnose the allergic diseases in clinical practice.
基金the National Natural Science Foundation of China (30200185)the Science Foundation of Committee of Education of Chongqing Municipality,China (030208)
文摘Marker-free GFP transgenic tobacco plants were constructed based on Cre/lox site-specific recombination system. A GFP gene was introduced into the tobacco genome using the Bar gene as a linked selectable marker flanked by recombination sites in a directed orientation. The Bar gene expression box was subsequently excised from the plant genome by a strategy of Cre gene retransformation. After removal of the Cre-NPT Ⅱ locus by genetic segregation through self-cross,plants that incorporated only the GFP transgene were obtained. Transgenic tobacco plants mediated by Agrobacterium tumefaciens were obtained,which resisted herbicide Basta and GFP expressed well,then the Cre gene was subsequently introduced into 5 plants of them,respectively,by retransformation. The leaf disks from Cre transgenic plants were used to test the resistance to Basta on the medium with 8 mg L-1 of PPT. The results showed that few discs were able to regenerate normally,and the excision at 76-100% efficiency depended on individual retransformation events. Evidence for a precise recombination event was confirmed by cloning the nucleotides sequence surrounding the lox sites of the Basta sensitive plants. The result indicated that the excision event in the recombination sites was precise and conservative,without loss or alteration of any submarginal nucleotides of the recombination sites. Bar gene excised plants were self-pollinated to allow segregation of the GFP gene from the Cre-NPT Ⅱ locus. The progenies from self-pollinated plants were scored for Kan senstivity,then the segregation of GFP gene from Cre-NPT Ⅱ locus in the Kan senstive plants were confirmed by PCR analysis subsequently. Hence,constructing marker-free transgenic tobacco plants by Cre/lox site-specific recombination system was reliable,and the strategy presented here should be applicable to other plants for the construction of marker-free transgenic plants as well.
基金the Science Foundation of the Ministryof Health of China(No.wkj2004-2-12).
文摘Objective:To identify potential serum markers of hepatic carcinoma in rats through Surface-Enhanced Laser Desorption Ioniza- tion-Time of Flight-Mass Spectrometry(SELDI-TOF-MS)Technology.Methods:A rat model of hepatic carcinoma was established. The serum samples of hepatic carcinoma and normal rats were analyzed via SELDI-TOF-MS Technology.The changes of the serum protein fingerprint patterns were observed between the experimental group of hepatic carcinoma and the controls.The analysis was conducted by statistical software-Biomarker Wizard.Results:Fifty-six protein peaks in the serums were found.Within m/z 0-20 000, the protein peaks of m/z 1158,8 835 and 15 302 of hepatic carcinoma serums were obviously higher in the rat models compared with those in the controls(P<0.01).Conclusion:Three peaks were considered as potential biomarkers according to the serum protein fingerprint patterns of the hepatic carcinoma group and the control group.
基金supported by the National Natural Science Foundation of China(31161140346 and 31461143021)the Beijing Municipal Science and Technology Project,China(D151100004415003)+1 种基金the National Key Technology R&D Program of China(2014BAD01B05)the earmarked fund for China Agriculture Research System(CARS-3-1-3)
文摘Stem lignin content(SLC) in common wheat(Triticum aestivum L.) contributes to lodging resistance. Caffeic acid 3-O-methyltransferase(COMT) is a key enzyme involved in lignin biosynthesis. Characterization of TaCOMT genes and development of gene-specific markers could enable marker-assisted selection in wheat breeding. In the present study, the full-length genomic DNA(gDNA) sequences of TaCOMT genes located on chromosomes 3 A, 3 B, and 3 D were cloned by homologous cloning. Two allelic variants, TaCOMT-3 Ba and TaCOMT-3 Bb, were identified and differed by a 222-bp insertion/deletion(InDel) in the 3′-untranslated region(3′-UTR). A co-dominant gene-specific marker based on this InDel was developed and designated as Ta COMT-3 BM. A total of 157 wheat cultivars and advanced lines grown in four environments were used to validate the associations between allelic patterns and SLC. The SLC of cultivars with TaCOMT-3 Ba was significantly(P<0.01) higher than that of those with TaCOMT-3 Bb, and the marker TaCOMT-3 BM could be effectively used in wheat breeding.
基金Supported by Special Fund of National Development and Reform Commission of China for Bio-breeding High Technology Industrialization
文摘In the present study, the genetic distances between 85 superior clones from seven natural populations of Pinus kesiya var. langbianensis were analyzed by RAPD-PCR assays, and then, a UPGMA cluster diagram was established based on the genetic distances to reveal their genetic relationship. In addition, specific markers of elite clones were identified by carefully comparing the fingerprints of the 85 clones. The results showed that the 85 P. kesiya clones were divided into three groups at a genetic distance of 0.59. Two specific markers that were able to distinguish some elite clones from others were identified. The results may provide a molecular basis for the identification and selection of elite clones of Pinus kesiya var. langbianensis.
