Antiserum against PreS2 peptide was raised with a synthetic polypeptide from the rabbits.The anti-preS2 antibody and polymerized human serum albumin were used as reagents in aradioimmunoassay to detect preS2 and polym...Antiserum against PreS2 peptide was raised with a synthetic polypeptide from the rabbits.The anti-preS2 antibody and polymerized human serum albumin were used as reagents in aradioimmunoassay to detect preS2 and polymerized human serum albumin bindingactivity respectively. Both were absent in patients with hepatitis A or HBsAg negative chronic liver di-seases. In biopsy - proven patients with chronic active hepatitis (CAH)B, prevalences of bothmarkers were significantly higher at exacerbation that at remission stage of the disease, and so werein CAH than in chronic asymptomatic HBV carrier (AsC) with normal histology. Besides, the pre-valences were significantly higher in HBeAg positive group than in anti-HBe positive group.However, the polymerized human serum albumin binding activity and the preS2 were undoubtedlynot the same, as the prevalence of the latter was only 56.7% of the former.展开更多
Incorporation of synthetic heme(FeP) into recombinant human serum albumin(rHSA) provides an artificial hemoprotein(rHSA-FeP) which can bind and release oxygen reversibly under physiological conditions(in aqueous media...Incorporation of synthetic heme(FeP) into recombinant human serum albumin(rHSA) provides an artificial hemoprotein(rHSA-FeP) which can bind and release oxygen reversibly under physiological conditions(in aqueous media, pH 7.3, 37 ℃) like hemoglobin(Hb) and myoglobin. An rHSA host absorbs maximally eight FeP molecules, and the solution properties are almost identical to those of rHSA itself. The second-order structure and surface charge distribution of rHSA were always constant independent of the binding numbers of FeP. Its O 2-binding ability satisfies the initial clinical requirements for red cell substitute. Although the NO-binding affinity is 8-fold high compared to the Hbs, administration of this fluid into rats showed negligible change in the blood pressure. Physiological responses to exchange transfusion with this rHSA-FeP into anaesthetized rats have also been evaluated.展开更多
Aging refers to a multidimensional process that all changes were accumulated in a person over time.These aging changes are associated with progressive increases in the chance of disease and death. Thus,it is necessary...Aging refers to a multidimensional process that all changes were accumulated in a person over time.These aging changes are associated with progressive increases in the chance of disease and death. Thus,it is necessary to establish a model to screen biomarkers to characterize and evaluate aging degree. In this study,an in vitro aging model was set up by formaldehdye and human serum albumin（ HSA）,the most abundant protein in human plasma,based on Maillard Reaction. The liquid chromatography tandem mass spectrometry（ LC-MS /MS） method with ^18O-labeling technique was employed to quantify modification degree of peptides cleaved from HSA. This model was established and optimized for further quantitative biomarker study.展开更多
目的:分析血清人附睾分泌蛋白4(Human epididymis protein 4,HE4)水平和子宫内膜癌患者临床病理特征的相关性.方法:回顾性分析2019年1月至2022年6月医院收治的120例子宫内膜癌患者临床资料.所有患者均实施子宫全切术治疗,收集患者的临...目的:分析血清人附睾分泌蛋白4(Human epididymis protein 4,HE4)水平和子宫内膜癌患者临床病理特征的相关性.方法:回顾性分析2019年1月至2022年6月医院收治的120例子宫内膜癌患者临床资料.所有患者均实施子宫全切术治疗,收集患者的临床病理特征资料,检测所有患者HE4水平,分析血清HE4水平与子宫内膜癌患者临床病理特征的相关性.结果:120例子宫内膜癌患者中,病理类型:子宫内膜样腺癌46例、子宫内膜样透明细胞癌36例、子宫内膜样鳞癌38例;淋巴结转移:发生35例、未发生85例;肌层浸润深度:>1/2肌层40例、≤1/2肌层80例;TNM分期:Ⅰ期22例、Ⅱ期43例、Ⅲ期55例.病灶所处部位:子宫底55例、子宫角37例、宫颈管28例.不同病理类型、TNM分期、病灶所处部位患者的血清HE4水平比较,差异无统计学意义;肌层浸润深度>1/2肌层患者的血清HE4水平高于肌层浸润深度≤1/2肌层的患者,发生淋巴结转移患者的血清HE4水平较未发生淋巴结转移的患者明显增加(P<0.05).经Logistic回归显示,血清HE4水平升高是子宫内膜癌患者肌层浸润深度>1/2肌层的风险因子(OR>1,P<0.05);血清HE4水平升高是子宫内膜癌患者发生淋巴结转移的风险因子(OR>1,P<0.05).结论:血清HE4水平升高增加可加剧肌层浸润深度,促使子宫内膜癌患者发生淋巴结转移.展开更多
CdS nanoparticles were prepared and modified with mercaptoacetic acid. The functionalized nanoparticles were water soluble and biocompatible and used as fluorescence probe in the determination of Human serum albumin(H...CdS nanoparticles were prepared and modified with mercaptoacetic acid. The functionalized nanoparticles were water soluble and biocompatible and used as fluorescence probe in the determination of Human serum albumin(HSA) and γ globulin( γ G). Under the optimal conditions, linear relationships were found between the enhanced intensity of fluorescence and the concentration of protein in the range of 0 2 and 3 5 μg/mL for HSA and 0 2 and 11 0 μg/mL for γ G. The limits of detection were 0 09 μg/mL for HSA and 0 18 μg/mL for γ G.展开更多
文摘Antiserum against PreS2 peptide was raised with a synthetic polypeptide from the rabbits.The anti-preS2 antibody and polymerized human serum albumin were used as reagents in aradioimmunoassay to detect preS2 and polymerized human serum albumin bindingactivity respectively. Both were absent in patients with hepatitis A or HBsAg negative chronic liver di-seases. In biopsy - proven patients with chronic active hepatitis (CAH)B, prevalences of bothmarkers were significantly higher at exacerbation that at remission stage of the disease, and so werein CAH than in chronic asymptomatic HBV carrier (AsC) with normal histology. Besides, the pre-valences were significantly higher in HBeAg positive group than in anti-HBe positive group.However, the polymerized human serum albumin binding activity and the preS2 were undoubtedlynot the same, as the prevalence of the latter was only 56.7% of the former.
文摘Incorporation of synthetic heme(FeP) into recombinant human serum albumin(rHSA) provides an artificial hemoprotein(rHSA-FeP) which can bind and release oxygen reversibly under physiological conditions(in aqueous media, pH 7.3, 37 ℃) like hemoglobin(Hb) and myoglobin. An rHSA host absorbs maximally eight FeP molecules, and the solution properties are almost identical to those of rHSA itself. The second-order structure and surface charge distribution of rHSA were always constant independent of the binding numbers of FeP. Its O 2-binding ability satisfies the initial clinical requirements for red cell substitute. Although the NO-binding affinity is 8-fold high compared to the Hbs, administration of this fluid into rats showed negligible change in the blood pressure. Physiological responses to exchange transfusion with this rHSA-FeP into anaesthetized rats have also been evaluated.
基金Supported by the National Natural Science Foundation of China(21205005,81471919)MOST China(2011YQ0900502)1000 Plan
文摘Aging refers to a multidimensional process that all changes were accumulated in a person over time.These aging changes are associated with progressive increases in the chance of disease and death. Thus,it is necessary to establish a model to screen biomarkers to characterize and evaluate aging degree. In this study,an in vitro aging model was set up by formaldehdye and human serum albumin（ HSA）,the most abundant protein in human plasma,based on Maillard Reaction. The liquid chromatography tandem mass spectrometry（ LC-MS /MS） method with ^18O-labeling technique was employed to quantify modification degree of peptides cleaved from HSA. This model was established and optimized for further quantitative biomarker study.
文摘目的:分析血清人附睾分泌蛋白4(Human epididymis protein 4,HE4)水平和子宫内膜癌患者临床病理特征的相关性.方法:回顾性分析2019年1月至2022年6月医院收治的120例子宫内膜癌患者临床资料.所有患者均实施子宫全切术治疗,收集患者的临床病理特征资料,检测所有患者HE4水平,分析血清HE4水平与子宫内膜癌患者临床病理特征的相关性.结果:120例子宫内膜癌患者中,病理类型:子宫内膜样腺癌46例、子宫内膜样透明细胞癌36例、子宫内膜样鳞癌38例;淋巴结转移:发生35例、未发生85例;肌层浸润深度:>1/2肌层40例、≤1/2肌层80例;TNM分期:Ⅰ期22例、Ⅱ期43例、Ⅲ期55例.病灶所处部位:子宫底55例、子宫角37例、宫颈管28例.不同病理类型、TNM分期、病灶所处部位患者的血清HE4水平比较,差异无统计学意义;肌层浸润深度>1/2肌层患者的血清HE4水平高于肌层浸润深度≤1/2肌层的患者,发生淋巴结转移患者的血清HE4水平较未发生淋巴结转移的患者明显增加(P<0.05).经Logistic回归显示,血清HE4水平升高是子宫内膜癌患者肌层浸润深度>1/2肌层的风险因子(OR>1,P<0.05);血清HE4水平升高是子宫内膜癌患者发生淋巴结转移的风险因子(OR>1,P<0.05).结论:血清HE4水平升高增加可加剧肌层浸润深度,促使子宫内膜癌患者发生淋巴结转移.
文摘CdS nanoparticles were prepared and modified with mercaptoacetic acid. The functionalized nanoparticles were water soluble and biocompatible and used as fluorescence probe in the determination of Human serum albumin(HSA) and γ globulin( γ G). Under the optimal conditions, linear relationships were found between the enhanced intensity of fluorescence and the concentration of protein in the range of 0 2 and 3 5 μg/mL for HSA and 0 2 and 11 0 μg/mL for γ G. The limits of detection were 0 09 μg/mL for HSA and 0 18 μg/mL for γ G.
