BACKGROUND The rate of positive tests using fecal immunochemical test(FIT)does not decrease with subsequent campaigns,but the positive predictive value of advanced neoplasia significantly decreases in subsequent campa...BACKGROUND The rate of positive tests using fecal immunochemical test(FIT)does not decrease with subsequent campaigns,but the positive predictive value of advanced neoplasia significantly decreases in subsequent campaign after a first negative test.A relationship between the fecal hemoglobin concentration(Fhb)and the opportunity to detect a colorectal cancer in subsequent campaign has been shown.AIM To predict the severity of colorectal lesions based on Fhb measured during previous colorectal cancer screening campaign.METHODS This etiological study included 293750 patients aged 50-74,living in Auvergne-Rhone-Alpes(France).These patients completed at least two FIT[test_((-1))and test_((0))]between June 2015 and December 2019.Delay between test_((-1))and test_((0))was>1year and test_((-1))result was negative(<150 ngHb/mL).The severity of colorectal lesions diagnosed at test_((0))was described according to Fhb measured at test_((-1))[Fhb_((-1))].The relationship between the severity classified in seven ordinal categories and the predictive factors was analyzed in an ordered multivariate polytomous regression model.RESULTS The test_((0))positive rate was 4.0%,and the colonoscopy completion rate was 97.1%in 11594 patients who showed a positive test_((0)).The colonoscopy detection rate was 77.7%in those 11254 patients who underwent a colonoscopy.A total of 8748 colorectal lesions were detected(including 2182 low-risk-polyps,2400 high-riskpolyp,and 502 colorectal cancer).The colonoscopy detection rate varied significantly with Fhb_((-1))[0 ngHb/mL:75.6%,(0-50 ngHb/mL):77.3%,(50-100 ngHb/mL):88.7%,(100-150 ngHb/mL):90.3%;P=0.001].People with a Fhb_((-1))within(100-150 ngHb/mL)(P=0.001)were 2.6(2.2;3.0)times more likely to have a high severity level compared to those having a Fhb_((-1))value of zero.This risk was reduced by 20%in patients aged 55-59 compared to those aged<55[adjusted odds ratio:0.8(0.6;1.0)].CONCLUSION The study showed that higher Fhb_((-1))is correlated to an increased risk of severity of colorectal lesions.This risk of severity increased among first-time participants(age<55)and the elderly(≥70).To avoid the loss of chance in these age groups,the FIT positivity threshold should be reduced to 100 ngHb/mL.The other alternative would be to reduce the time between the two tests in these age groups from the current 2 years to 1 year.展开更多
Background For the renal transplant recipients, anemia is one of the common complications and becomes a major medical issue before transplantation. Haemoglobin （Hb） is used as a prognostic indicator, although the op...Background For the renal transplant recipients, anemia is one of the common complications and becomes a major medical issue before transplantation. Haemoglobin （Hb） is used as a prognostic indicator, although the optimal pre-transplantation Hb concentration associated with positive prognosis is still controversial. The aim of this study was to detect the optimal Hb concentration on predicting the graft survival and function.Methods A retrospective cohort study was conducted by reviewing the medical records of the patients who received renal transplantations at our center from January 2004 to June 2008. Patients were divided into two groups： high Hb group （＞100 g/L, n=79） and low Hb group （＜100 g/L, n=63）. There was no significant difference between the two groups regarding sex, age, blood type and tissue types. Renal function among the two groups was measured and compared.Panel reacting antigens （PRA） of all the recipients were negative. The effect of preoperative hemoglobin concentration on the postoperative renal function recovery in both groups was further analyzed.Results A total of 14 acute rejection episodes occurred, including 5 patients in the high Hb group （7.9%） and 9 in the low Hb group （11.4%, P ＞0.05）. The serum creatinine level at one-year post-transplantation of the low Hb group was significantly higher than that of the high Hb group （（117.8±36.3） μmol/L vs. （103.1±35.5） μmol/L, P ＜0.05）. For one-year actuarial patient and graft survival, incidence of delayed graft function （DGF）, serum creatinine concentrations at 1, 3, 6 months post-transplantation, the incidence of cytomegalovirus （CMV） infection, post-transplantation anemia （PTA） and post-transplantation diabetes mellitus （PTDM） of both groups, there were no statistically significant differences.Conclusion Pre-transplantation Hb concentration has significant effect on one-year creatinine concentration, but can not significantly affect acute rejection episodes, DGF, PTA, CMV infection and PTDM.展开更多
A novel approach to image hemoglobin concentration（△Dhb） and oxygen saturation （△Doxy） of breast tissue is presented. The scenograph of dual-wavelength （760 and 850 nm） near infrared lights through breast tiss...A novel approach to image hemoglobin concentration（△Dhb） and oxygen saturation （△Doxy） of breast tissue is presented. The scenograph of dual-wavelength （760 and 850 nm） near infrared lights through breast tissue is acquired by high sensitive charge coupled device （CCD） camera. The evaluation criterion of the difference of △Dhh and △Doxy between detected and referenced breast tissue can be obtained by a calculation formula without complicate caculation. This approach is applied to clinic detection in breast tissue. The ongoing clinical experiments indicate that malignant tumor usually exhibits characterize of ＂higher △Dhb and lower △Doxy＂, while benign lesion often shows ＂lower △Dhb and higher △Doxy＂ or other characters. So it is useful to assist the diagnosis of breast disease.展开更多
BACKGROUND Hepatorenal syndrome(HRS)is a severe complication of cirrhosis with high mortality,which necessitates accurate clinical decision.However,studies on prognostic factors and scoring systems to predict overall ...BACKGROUND Hepatorenal syndrome(HRS)is a severe complication of cirrhosis with high mortality,which necessitates accurate clinical decision.However,studies on prognostic factors and scoring systems to predict overall survival of HRS are not enough.Meanwhile,a multicenter cohort study with a long span of time could be more convincing.AIM To develop a novel and effective prognostic model for patients with HRS and clarify new prognostic factors.METHODS We retrospectively enrolled 1667 patients from four hospitals,and 371 eligible patients were finally analyzed to develop and validate a novel prognostic model for patients with HRS.Characteristics were compared between survivors and non-survivors,and potential prognostic factors were selected according to the impact on 28-d mortality.Accuracy in predicting 28-d mortality was compared between the novel and other scoring systems,including Model for End-Stage Liver Disease(MELD),Chronic Liver Failure-Sequential Organ Failure Assessment(CLIF-SOFA),and Chinese Group on the Study of Severe Hepatitis BAcute-on-Chronic Liver Failure(COSSH-ACLF).RESULTS Five prognostic factors,comprised of gender,international normalized ratio,mean corpuscular hemoglobin concentration,neutrophil percentage,and stage,were integrated into a new score,GIMNS;stage is a binary variable defined by the number of failed organs.GIMNS was positively correlated with MELD,CLIFSOFA,and COSSH-ACLF.Additionally,it had better accuracy[area under the receiver operating characteristic curve(AUROC):0.830]than MELD(AUROC:0.759),CLIF-SOFA(AUROC:0.767),and COSSH-ACLF(AUROC:0.759)in the derivation cohort(P<0.05).It performed better than MELD and CLIF-SOFA in the validation cohort(P<0.050)and had a higher AUROC than COSSH-ACLF(P=0.122).CONCLUSION We have developed a new scoring system,GIMNS,to predict 28-d mortality of HRS patients.Mean corpuscular hemoglobin concentration and stage were first proposed and found to be related to the mortality of HRS.Additionally,the GIMNS score showed better accuracy than MELD and CLIF-SOFA,and the AUROC was higher than that of COSSH-ACLF.展开更多
With a self-made near-infrared analytical instrument to blood and oxygen parameters in human brain, 80 cases in which 20 are healthy persons and 30 are anaesthetised cases and others are patients with heart function l...With a self-made near-infrared analytical instrument to blood and oxygen parameters in human brain, 80 cases in which 20 are healthy persons and 30 are anaesthetised cases and others are patients with heart function lack is taken to examine, and the data of blood and oxygen in brain tissue were collected and analyzed by the method of power spectrum and correlation function. The results indicate that: (1) The average brain oxygen saturation of healthy persons and anaesthetised cases is about 80%, in accord with normal parameter of physiology. Contrastively, the average brain oxygen saturation of patients with heart function lack is 72.8%, which is obviously less than that of healthy persons and anaesthetised cases. The probability of medical statistics is less than 0.01. (2) The shapes of wave of brain blood and oxygen for the healthy person and the anaesthetised case reveal small periodical fluctuations with stable shape and base line, and the trend of increase or decrease of blood and oxygen parameters in brain tissue is synchronous and a phase reversal, but for the patient with heart function lack in a brain oxygen lack state, the shapes of wave are irregular. This is a hint that near infrared light passing through tissue can reflect the intuitionistic change of brain blood and oxygen parameters.(3) The power spectra of brain blood and oxygen for the healthy person and the anaesthetised case has a clear main peak, narrow bandwidth and perfect superposition each other, but the power spectra for the patient with heart function lack in a brain oxygen lack state is on the contrary.(4) The average cross correlation coefficient of brain blood and oxygen for healthy persons and anaesthetised cases is -0.9825±0.1027 close to -1. But the average cross correlation coefficient for patients with heart function lack in a brain oxygen lack state is merely -0.8923±0.1035 which is obviously greater than -1 and the probability of medical statistics is less than 0.01. The clinic experiments have proved that the shapes of waves, the power spectrum and cross correlation coefficient of brain blood and oxygen are useful to analyze the physiological status and changes of blood and oxygen in human brain.展开更多
Objectives To study the change in plasma hemoglobin concentration in elderly patients with primary hypertension and/or type 2 diabetes complicated with end-stage renal disease （ESRD） determined by estimated glomerul...Objectives To study the change in plasma hemoglobin concentration in elderly patients with primary hypertension and/or type 2 diabetes complicated with end-stage renal disease （ESRD） determined by estimated glomerular filtration rate. Methods Two hundred and thirty cases of Chinese patients aged 60 years or older with primary hypertension and/or type 2 diabetes complicated with chronic kidney disease were enrolled in the study. Patients with chronic kidney disease were divided into ESRD group with estimated glomemlar filtration rate less than 15 mL . min^-1.1.73 m^-2 （7.80 ± 3. 14 mL. min^-1 . 1.73 m^-2） and non-ESRD group with estimated glomerular filtration rate 15 mL.min^-1 . 1.73 m^-2（29. 76 ± 12. 90 mL.min^-1 . 1.73 m^-2） or higher. The plasma hemoglobin concentration was compared between the above two groups retrospectively. Results There was significant decrease in plasma hemoglobin concentration in ESRD group compared with non-ESRD group （74.4 ± 22. 5 g/L vs 100. 8 ± 23.0 g/L, P 〈 0. 05 ）. After stratification by sex, there was also significant decrease in plasma hemoglobin concentration both in male and female of ESRD groups compared with their respective non-ESRD groups（77. 2±22. 0 g/L vs 104. 9 ±20. 7 g/L; 69. 7 ±22. 8 g/L vs 96.4± 24.8 g/L, P 〈 0. 05, respectively）. Plasma hemoglobin concentration was positively related to estimated glomerular filtration rate significantly in patients with ESRD （ P 〈 0. 05 ）. Conclusions Plasma hemoglobin concentration is decreased significantly, and is positively related to estimated glomerular filtration rate significantly in elderly patients with primary hypertension and/or type 2 diabetes complicated with ESRD determined by estimated glomerular filtration rate.展开更多
Processes of adaptation to urban environments are well described for relatively few avian taxa, mainly passerines, but selective forces responsible for urban colonization in ecologically different groups of birds rema...Processes of adaptation to urban environments are well described for relatively few avian taxa, mainly passerines, but selective forces responsible for urban colonization in ecologically different groups of birds remain mostly unrecognized. The aim of this article is to identify drivers of recent urban colonization （Lodz, central Poland） by a reed-nesting waterbird, the Eurasian coot Fulica atra. Urban colonizers were found to adopt a distinct reproductive strategy by maximizing the number of offspring （carryover effects of higher clutch size）, whereas suburban individuals invested more in the quality of the progeny （higher egg volume）, which could reflect differences in predatory pressure between 2 habitats. In fact, reduced predation rate was strongly suggested by elevated hatching success in highly urbanized areas, where probability of hatching at least 1 chick was higher by 30% than in suburban natural-like habitats. Coots nesting in highly urbanized landscape had considerably higher annual reproductive success in comparison to suburban pairs, and the difference was 4-fold between the most and least urbanized areas. There was also a constant increase in size- adjusted body mass and hemoglobin concentration of breeding coots from the suburbs to the city centre. Urban colonization yielded no survival benefits for adult birds and urban individuals showed higher site fidelity than suburban conspecifics. The results suggest that the recent urban colonization by Eurasian coots was primary driven by considerable reproductive benefits which may be primarily attributed to： （1） reduced predation resulting from an exclusion of most native predators from highly urbanized zones; （2） increased condition of urban-dwelling birds resulting from enhanced food availability.展开更多
文摘BACKGROUND The rate of positive tests using fecal immunochemical test(FIT)does not decrease with subsequent campaigns,but the positive predictive value of advanced neoplasia significantly decreases in subsequent campaign after a first negative test.A relationship between the fecal hemoglobin concentration(Fhb)and the opportunity to detect a colorectal cancer in subsequent campaign has been shown.AIM To predict the severity of colorectal lesions based on Fhb measured during previous colorectal cancer screening campaign.METHODS This etiological study included 293750 patients aged 50-74,living in Auvergne-Rhone-Alpes(France).These patients completed at least two FIT[test_((-1))and test_((0))]between June 2015 and December 2019.Delay between test_((-1))and test_((0))was>1year and test_((-1))result was negative(<150 ngHb/mL).The severity of colorectal lesions diagnosed at test_((0))was described according to Fhb measured at test_((-1))[Fhb_((-1))].The relationship between the severity classified in seven ordinal categories and the predictive factors was analyzed in an ordered multivariate polytomous regression model.RESULTS The test_((0))positive rate was 4.0%,and the colonoscopy completion rate was 97.1%in 11594 patients who showed a positive test_((0)).The colonoscopy detection rate was 77.7%in those 11254 patients who underwent a colonoscopy.A total of 8748 colorectal lesions were detected(including 2182 low-risk-polyps,2400 high-riskpolyp,and 502 colorectal cancer).The colonoscopy detection rate varied significantly with Fhb_((-1))[0 ngHb/mL:75.6%,(0-50 ngHb/mL):77.3%,(50-100 ngHb/mL):88.7%,(100-150 ngHb/mL):90.3%;P=0.001].People with a Fhb_((-1))within(100-150 ngHb/mL)(P=0.001)were 2.6(2.2;3.0)times more likely to have a high severity level compared to those having a Fhb_((-1))value of zero.This risk was reduced by 20%in patients aged 55-59 compared to those aged<55[adjusted odds ratio:0.8(0.6;1.0)].CONCLUSION The study showed that higher Fhb_((-1))is correlated to an increased risk of severity of colorectal lesions.This risk of severity increased among first-time participants(age<55)and the elderly(≥70).To avoid the loss of chance in these age groups,the FIT positivity threshold should be reduced to 100 ngHb/mL.The other alternative would be to reduce the time between the two tests in these age groups from the current 2 years to 1 year.
文摘Background For the renal transplant recipients, anemia is one of the common complications and becomes a major medical issue before transplantation. Haemoglobin （Hb） is used as a prognostic indicator, although the optimal pre-transplantation Hb concentration associated with positive prognosis is still controversial. The aim of this study was to detect the optimal Hb concentration on predicting the graft survival and function.Methods A retrospective cohort study was conducted by reviewing the medical records of the patients who received renal transplantations at our center from January 2004 to June 2008. Patients were divided into two groups： high Hb group （＞100 g/L, n=79） and low Hb group （＜100 g/L, n=63）. There was no significant difference between the two groups regarding sex, age, blood type and tissue types. Renal function among the two groups was measured and compared.Panel reacting antigens （PRA） of all the recipients were negative. The effect of preoperative hemoglobin concentration on the postoperative renal function recovery in both groups was further analyzed.Results A total of 14 acute rejection episodes occurred, including 5 patients in the high Hb group （7.9%） and 9 in the low Hb group （11.4%, P ＞0.05）. The serum creatinine level at one-year post-transplantation of the low Hb group was significantly higher than that of the high Hb group （（117.8±36.3） μmol/L vs. （103.1±35.5） μmol/L, P ＜0.05）. For one-year actuarial patient and graft survival, incidence of delayed graft function （DGF）, serum creatinine concentrations at 1, 3, 6 months post-transplantation, the incidence of cytomegalovirus （CMV） infection, post-transplantation anemia （PTA） and post-transplantation diabetes mellitus （PTDM） of both groups, there were no statistically significant differences.Conclusion Pre-transplantation Hb concentration has significant effect on one-year creatinine concentration, but can not significantly affect acute rejection episodes, DGF, PTA, CMV infection and PTDM.
文摘A novel approach to image hemoglobin concentration（△Dhb） and oxygen saturation （△Doxy） of breast tissue is presented. The scenograph of dual-wavelength （760 and 850 nm） near infrared lights through breast tissue is acquired by high sensitive charge coupled device （CCD） camera. The evaluation criterion of the difference of △Dhh and △Doxy between detected and referenced breast tissue can be obtained by a calculation formula without complicate caculation. This approach is applied to clinic detection in breast tissue. The ongoing clinical experiments indicate that malignant tumor usually exhibits characterize of ＂higher △Dhb and lower △Doxy＂, while benign lesion often shows ＂lower △Dhb and higher △Doxy＂ or other characters. So it is useful to assist the diagnosis of breast disease.
基金Chinese High Tech Research&Development(863)Program,No.2013AA020102.
文摘BACKGROUND Hepatorenal syndrome(HRS)is a severe complication of cirrhosis with high mortality,which necessitates accurate clinical decision.However,studies on prognostic factors and scoring systems to predict overall survival of HRS are not enough.Meanwhile,a multicenter cohort study with a long span of time could be more convincing.AIM To develop a novel and effective prognostic model for patients with HRS and clarify new prognostic factors.METHODS We retrospectively enrolled 1667 patients from four hospitals,and 371 eligible patients were finally analyzed to develop and validate a novel prognostic model for patients with HRS.Characteristics were compared between survivors and non-survivors,and potential prognostic factors were selected according to the impact on 28-d mortality.Accuracy in predicting 28-d mortality was compared between the novel and other scoring systems,including Model for End-Stage Liver Disease(MELD),Chronic Liver Failure-Sequential Organ Failure Assessment(CLIF-SOFA),and Chinese Group on the Study of Severe Hepatitis BAcute-on-Chronic Liver Failure(COSSH-ACLF).RESULTS Five prognostic factors,comprised of gender,international normalized ratio,mean corpuscular hemoglobin concentration,neutrophil percentage,and stage,were integrated into a new score,GIMNS;stage is a binary variable defined by the number of failed organs.GIMNS was positively correlated with MELD,CLIFSOFA,and COSSH-ACLF.Additionally,it had better accuracy[area under the receiver operating characteristic curve(AUROC):0.830]than MELD(AUROC:0.759),CLIF-SOFA(AUROC:0.767),and COSSH-ACLF(AUROC:0.759)in the derivation cohort(P<0.05).It performed better than MELD and CLIF-SOFA in the validation cohort(P<0.050)and had a higher AUROC than COSSH-ACLF(P=0.122).CONCLUSION We have developed a new scoring system,GIMNS,to predict 28-d mortality of HRS patients.Mean corpuscular hemoglobin concentration and stage were first proposed and found to be related to the mortality of HRS.Additionally,the GIMNS score showed better accuracy than MELD and CLIF-SOFA,and the AUROC was higher than that of COSSH-ACLF.
文摘With a self-made near-infrared analytical instrument to blood and oxygen parameters in human brain, 80 cases in which 20 are healthy persons and 30 are anaesthetised cases and others are patients with heart function lack is taken to examine, and the data of blood and oxygen in brain tissue were collected and analyzed by the method of power spectrum and correlation function. The results indicate that: (1) The average brain oxygen saturation of healthy persons and anaesthetised cases is about 80%, in accord with normal parameter of physiology. Contrastively, the average brain oxygen saturation of patients with heart function lack is 72.8%, which is obviously less than that of healthy persons and anaesthetised cases. The probability of medical statistics is less than 0.01. (2) The shapes of wave of brain blood and oxygen for the healthy person and the anaesthetised case reveal small periodical fluctuations with stable shape and base line, and the trend of increase or decrease of blood and oxygen parameters in brain tissue is synchronous and a phase reversal, but for the patient with heart function lack in a brain oxygen lack state, the shapes of wave are irregular. This is a hint that near infrared light passing through tissue can reflect the intuitionistic change of brain blood and oxygen parameters.(3) The power spectra of brain blood and oxygen for the healthy person and the anaesthetised case has a clear main peak, narrow bandwidth and perfect superposition each other, but the power spectra for the patient with heart function lack in a brain oxygen lack state is on the contrary.(4) The average cross correlation coefficient of brain blood and oxygen for healthy persons and anaesthetised cases is -0.9825±0.1027 close to -1. But the average cross correlation coefficient for patients with heart function lack in a brain oxygen lack state is merely -0.8923±0.1035 which is obviously greater than -1 and the probability of medical statistics is less than 0.01. The clinic experiments have proved that the shapes of waves, the power spectrum and cross correlation coefficient of brain blood and oxygen are useful to analyze the physiological status and changes of blood and oxygen in human brain.
基金supported by the medical science & technology research fund of Health Bureau of Chongqing City, China(No.2004(53)04-2-154)the natural science research fund of Chongqing Science & Technology Commission in Chongqing City, China(No.CSTC,2007BB5276)
文摘Objectives To study the change in plasma hemoglobin concentration in elderly patients with primary hypertension and/or type 2 diabetes complicated with end-stage renal disease （ESRD） determined by estimated glomerular filtration rate. Methods Two hundred and thirty cases of Chinese patients aged 60 years or older with primary hypertension and/or type 2 diabetes complicated with chronic kidney disease were enrolled in the study. Patients with chronic kidney disease were divided into ESRD group with estimated glomemlar filtration rate less than 15 mL . min^-1.1.73 m^-2 （7.80 ± 3. 14 mL. min^-1 . 1.73 m^-2） and non-ESRD group with estimated glomerular filtration rate 15 mL.min^-1 . 1.73 m^-2（29. 76 ± 12. 90 mL.min^-1 . 1.73 m^-2） or higher. The plasma hemoglobin concentration was compared between the above two groups retrospectively. Results There was significant decrease in plasma hemoglobin concentration in ESRD group compared with non-ESRD group （74.4 ± 22. 5 g/L vs 100. 8 ± 23.0 g/L, P 〈 0. 05 ）. After stratification by sex, there was also significant decrease in plasma hemoglobin concentration both in male and female of ESRD groups compared with their respective non-ESRD groups（77. 2±22. 0 g/L vs 104. 9 ±20. 7 g/L; 69. 7 ±22. 8 g/L vs 96.4± 24.8 g/L, P 〈 0. 05, respectively）. Plasma hemoglobin concentration was positively related to estimated glomerular filtration rate significantly in patients with ESRD （ P 〈 0. 05 ）. Conclusions Plasma hemoglobin concentration is decreased significantly, and is positively related to estimated glomerular filtration rate significantly in elderly patients with primary hypertension and/or type 2 diabetes complicated with ESRD determined by estimated glomerular filtration rate.
文摘Processes of adaptation to urban environments are well described for relatively few avian taxa, mainly passerines, but selective forces responsible for urban colonization in ecologically different groups of birds remain mostly unrecognized. The aim of this article is to identify drivers of recent urban colonization （Lodz, central Poland） by a reed-nesting waterbird, the Eurasian coot Fulica atra. Urban colonizers were found to adopt a distinct reproductive strategy by maximizing the number of offspring （carryover effects of higher clutch size）, whereas suburban individuals invested more in the quality of the progeny （higher egg volume）, which could reflect differences in predatory pressure between 2 habitats. In fact, reduced predation rate was strongly suggested by elevated hatching success in highly urbanized areas, where probability of hatching at least 1 chick was higher by 30% than in suburban natural-like habitats. Coots nesting in highly urbanized landscape had considerably higher annual reproductive success in comparison to suburban pairs, and the difference was 4-fold between the most and least urbanized areas. There was also a constant increase in size- adjusted body mass and hemoglobin concentration of breeding coots from the suburbs to the city centre. Urban colonization yielded no survival benefits for adult birds and urban individuals showed higher site fidelity than suburban conspecifics. The results suggest that the recent urban colonization by Eurasian coots was primary driven by considerable reproductive benefits which may be primarily attributed to： （1） reduced predation resulting from an exclusion of most native predators from highly urbanized zones; （2） increased condition of urban-dwelling birds resulting from enhanced food availability.
