丙肝病毒核心抗原与丙肝病毒抗体检测的相关性

目的 应用酶联免疫法(ELISA法)分别检测丙肝病毒核心抗原(HCV-cAg)和抗体(HCV-Ab),了解丙肝病毒核心抗原检测的意义.方法 采用丙型肝炎病毒(HCV)游离核心抗原试剂盒,对来自某院人院前或手术前筛查的100例临床样本和30例丙肝抗体阳性患者的血清样本进行HCV-cAg检测.结果 100例筛查样本HCV-Ab均为阴性.HCV-cAg阳性2例;HCV-cAg阳性率2%;30例HCV-Ab阳性的样本检出HCV-cAg阳性10例.HCV-cAg阳性率为33.3%.结论 HCV核心抗原检出时间早于抗体,HCV-cAg检测试剂盒可作为HCV抗体检测的补充试剂,尤其对术前HCV筛查的患者联合应用更具有临床价值.     

丙肝病毒核心抗原的检测在诊断丙肝中的意义

目的：通过分别检测丙肝病毒抗体（HCV-Ab）、丙肝病毒核心抗原（HCV-cAg）和定量检测HCV-RNA,探究丙肝病毒核心抗原检测对于丙型肝炎诊断的意义。方法对36例丙肝抗体阳性患者和120例丙肝抗体阴性患者同时检测HCV-Ab、HCV-cAg和HCV-RNA。丙肝抗体检测采用间接ELISA法,丙肝核心抗原检测采用双抗体夹心ELISA法,丙肝HCV-RNA检测采用荧光PCR法定量检测。结果36例丙肝抗体阳性组中,HCV-cAg阳性28例,HCV-RNA阳性25例。120例丙肝抗体阴性的门诊肝炎患者中HCV-cAg阳性有2例,HCV-RNA阳性有1例。结论 HCV-cAg检测可以缩短HCV抗体检测窗口期,特异性高,操作简便,可将二者联合起来,提高丙型肝炎病毒的检出率及准确度。     

HCV-cAg与HCV-Ab联合检测的互补作用及HCV阳性者与ALT的关系

目的探讨丙肝病毒核心抗原（HCV-cAg）与丙肝病毒抗体（HCV-Ab）联合检测对诊断丙肝病毒（HCV）感染的互补作用及HCV感染阳性者与丙氨酸氨基转移酶（ALT）的关系。方法检测手术前检查组2061例患者和ALT〉80U／L组242例患者的HCV-cAg、HCV-Ab和ALT等指标,然后将检测结果作出统计分析。结果手术前检查组联合检测有2．7％的阳性率,显著高于单独HCV-tAg和单独HCV-Ab的1．6％（P〈0．05）;ALT〉80U／L组联合检测有14．5％的阳性率,显著高于单独HCV-tAg的7．0％（P〈0．01）;手术前检查组ALT均值和ALT〉80U／L例数是2项均阳性高于HCV-Ab阳性、HCV-Ab阳性高于HCV-cAg。结论HCV-cAg和HCV-Ab2项联合检测明显优于单项检测,这对HCV感染的诊断能起到很好的互补作用,加上ALT等肝功能指标的检测,有利于HCV感染的正确诊断。     

HCV抗原、HCV抗体及HCV-RNA联合检测与ALT的相关性分析

目的探究分析HCV抗原、HCV抗体及HCV-RNA联合检测与ALT的相关性。方法随机选取我院在2013年2月—2015年2月期间接收的120例HCV-RNA阳性丙肝患者,采用不同的方法分别检查患者丙氨酸氨基转移酶(ALT)的含量水平、HCV抗原(HCV-c Ag)、HCV抗体(HCV-Ab)以及HCV-RNA,并对所有数据进行统计分析。结果 120例HCV-RNA阳性丙肝患者中HCV抗原的阳性率为80.0%,HCV抗体的阳性率为95.0%,ALT含量的变化和HCV-RNA载体含量之间没有明显的相关性(P>0.05),HCV-RNA载体含量越高,则HCV抗体的阳性率越高,HCV-RNA载体载体含量的升高会引起ALT异常率的升高,两者之间呈正相关(P<0.05)。结论对于HCV-RNA阳性丙肝患者中HCV抗原、HCV抗体及HCV-RNA联合检测可进一步明确丙肝病毒的感染力,对患者临床病情具有一定的评估作用,同时结合ALT可对患者治疗效果提供一定的参考,值得临床应用。     

丙型肝炎病毒核酸、核心抗原和抗体联合检测的临床意义

目的探讨丙型肝炎病毒核酸、核心抗原和抗体检测联合应用的意义。方法抗-HCV和HCV-cAg用ELISA法检测,HCV-RNA用RT-PCR法检测。结果1761例病人共测得阳性标本57例,其中抗-HCV阳性54例,HCV-cAg阳性22例,同时阳性为19例。3例HCV-RNA而抗-HCV阴性样本中检出HCV-cAg。22例HCV-cAg阳性标本经HCV-RNA检测均为阳性。结论HCV-RNA、抗-HCV和HCV-cAg联合检测可起到互补作用,提高检出阳性率,有利于早期诊断。     

丙型肝炎病毒核酸、核心抗原和抗体联合检测的临床意义

目的探讨丙型肝炎病毒核酸、核心抗原和抗体检测联合应用的意义。方法抗-HCV和HCV-cAg用ELISA法检测,HCV-RNA用RT-PCR法检测。结果1761例病人共测得阳性标本57例,其中抗-HCV阳性54例,HCV-cAg阳性22例,同时阳性为19例。3例HCV-RNA而抗-HCV阴性样本中检出HCV-cAg。22例HCV-cAg阳性标本经HCV-RNA检测均为阳性。结论HCV-RNA、抗-HCV和HCV-cAg联合检测可起到互补作用,提高检出阳性率,有利于早期诊断。     

HCV-cAg与HCV-Ab、HCV-RNA及肝功能之间的关系探讨

目的探讨丙型肝炎病毒核心抗原（hepatitis C virus core antigen,HCV-cAg）与丙型肝炎病毒RNA（hepatitis C virus RNA,HCV-RNA）关系以及丙氨酸氨基转移酶（ALT）、天门冬氨酸氨基转移酶（AST）、谷氨酰转肽酶（GGT）水平与HCV-RNA病毒载量之间的相关性。方法选取78例HCV抗体检测阳性的丙型肝炎或疑似丙型肝炎病人作为观察组,另选取同期健康体检者20名作为对照组。采用ELISA法和荧光定量PCR法等对2组血清样本进行HCV-cAg、HCV-RNA和ALT、AST、GGT水平测定,并比较各参数之间的关系。结果观察组HCV-cAg阳性检出率为41.0%（32/78）,HCV-RNA阳性检出率为53.8%（42/78）,差异有统计学意义（P < 0.01）,且二者之间具有较好一致性（κ=0.747）。观察组ALT、AST和GGT水平均明显高于对照组（P < 0.01）,但与HCV-RNA病毒载量均无明显相关性（P>0.05）。结论HCV-cAg和HCV-RNA在检测丙型肝炎方面有较好一致性和相关性,可为丙型肝炎的临床诊断提供有价值的依据。     

HCV-RNA检测在提高HCV感染患者检出率的试验研究

目的:探讨组合检测丙肝抗体和丙肝核心抗原并联合丙肝RNA在丙肝临床诊断中的意义。方法:对13 117例患者进行HCV抗体和HCV抗原组合检测,对两种方法中的阳性标本进行HCV-RNA确证检测。结果:13 117例患者中,丙肝抗体阳性188例,丙肝核心抗原阳性52例,其中丙肝抗体和核心抗原均阳性者48例,单独核心抗原阳性4例,总阳性数192例。丙肝抗体阳性188例中HCV抗体阳性标本中有121例HCV-RNA阳性,检出率为64.4%;有48例HCV-c Ag阳性,检出率为25.5%(48/188)。丙肝抗体和核心抗原均阳性者HCVRNA阳性45例,检出率为93.75%;单独核心抗原阳性4例中有3例HCV-RNA阳性,检出率75%。结论:抗-HCV和HCV-c Ag组合作为HCV感染初筛实验联合HCV-RNA确证检测,对HCV感染患者阳性检出率更高,假阳性率更低,可作为临床对HCV感染患者早期诊断和治疗的有效检验程序。     

丙肝患者血清HCV-Ab、HCV-cAg、HCV-RNA检测的比较及肝功能的相关性研究

目的 探讨HCV-Ab、HCV-cAg、HCV-RNA及ALT、AST、γ-GT的相关性及临床应用价值.方法 ELISA方法检测HCV-Ab、HCV-cAg,PCR-荧光探针法检测HCV-RNA,全自动生化分析仪检测ALT、AST、γ-GT.结果 检测HCV感染者186例,其中HCV-Ab、HCV-cAg的阳性率分别为95.7％、25.3％、82.7％.ALT、AST、γ-GT水平与HCV病毒载量呈正相关（P＜0.01）.结论 同时检测HCV-Ab、HCV-cAg、HCV-RNA可充分掌握丙肝患者病毒感染情况,以及检测ALT、AST、γ-GT对抗病毒治疗的疗效评价及治疗时间有重要意义.     

HCV-cAg与HCV-Ab联合检测对丙型肝炎的诊断价值

目的观察丙型肝炎病毒核心抗原(HCV-cAg)与丙型肝炎病毒抗体(HCV-Ab)联合检测对丙型肝炎的诊断价值。方法选取2014年5月至2016年4月潢川县人民医院丙型肝炎患者54例为观察组,选取同期HCV-RNA阴性者54例为对照组,采用荧光定量PCR法检测HCV-RNA,采用酶联免疫法检测HCV-cAg与HCV-Ab。结果观察组HCV-cAg、HCV-Ab检测阳性表达率及联合检测阳性表达率均高于对照组,差异有统计学意义(P<0.05);HCVcAg、HCV-Ab联合检测灵敏度为96.30%,高于HCV-cAg检测的70.37%、HCV-Ab检测的83.33%,差异有统计学意义(P<0.05)。结论 HCV-cAg、HCV-Ab联合检测可提高丙型肝炎诊断效果,具有重要的临床诊断价值。     

丙型肝炎病毒核心抗原检测的临床应用探讨

[目的]探讨HCV核心抗原在HCV感染诊断和治疗中的作用。[方法]对173例HCV感染患者血清和82例健康对照者血清,使用ELISA法分别检测抗-HCV、总的HCV核心抗原,使用荧光定量RT-PCR检测HCV RNA。[结果]173例HCV感染者抗-HCV均为阳性。HCV RNA阳性率为49.7%(86/173);HCV核心抗原阳性率为36.4%(63/173)。二者差异有统计学意义(P<0.05)。86例HCV RNA阳性标本中,HCV核心抗原阳性60例(69.8%);HCV核心抗原阴性26例(30.2%)。82例健康对照者抗-HCV、HCV核心抗原、HCV RNA均为阴性。[结论]在没有HCV RNA检测资格的实验室,HCV核心抗原检测可作为病毒存在和复制的一个指标,作为抗-HCV检测的补充试验。     

Clinical application and analysis of hepatitis C virus NS3 antigen detection by ELISA in human serum

Background Hepatitis C virus （HCV） core antigen assays have been produced to exclude infectious donations collected during the preseroconversion window phase （PWP）. For the same purpose, we evaluated the specificity and sensitivity of a novel hepatitis C virus NS3 antigen detection immunoassay and the application of this assay in clinical diagnosis. Methods Samples from 77 healthy subjects, 173 anti-HCV positive patients and 3708 hepatitis patients other than HCV positive were tested with the HCV NS3 antigen assay. Some HCV NS3 antigen positive samples were further validated with HCV-RNA, neutralization and immunodot assays. Twenty-five sequential samples from 11 HCV NS3 antigen positive patients were subjected to kinetic study. Results Only 48 （1.3%） of 3708 anti-HCV negative samples were positive for HCV NS3 antigen. Among them, 44 of 3030 samples from patients only infected with HBV were HCV NS3 antigen positive, 4 of the 445 samples from patients infected with other type hepatitis were HCV NS3 antigen positive. In addition, 42 （24.3%） of 173 anti-HCV positive samples were HCV NS3 antigen positive and all 77 samples from healthy subjects were negative to HCV NS3 antigen assay. Of the 15 HCV NS3 antigen positive samples, 9 （60%） were HCV-RNA positive. The neutralization and positive percentage of immunodot assay for 23 HCV NS3 antigen positive sera were 87.0% （20/23） and 69.6% （16/23） respectively. Of the 25 sequential samples from 11 HCV NS3 antigen positive patients, there was a negative correlation between the OD values and the duration of test （r=-0.989, P〈0.05）, and there were correlations among their HCV NS3 antigen, HCV-RNA and anti-HCV Utres. The anti-HCV antibodies of two sera were detected while their OD values of HCV NS3 antigen decreased gradually. Conclusions The HCV NS3 antigen detection assay showed perfect specificity and high sensitivity. Thus, it would be useful and economical as a routine test in laboratories for early diagnosis of HCV infection and prevention.     

Hepatitis C viral infection in a Chinese hemodialysis unit

Background The prevalence of hepatitis C virus （HCV） infection among maintenance hemodialysis （MHD） patients varies among countries and among dialysis units within a single country. The present study aimed to investigate the prevalence and characteristics of HCV infection in MHD patients in a Chinese hemodialysis unit.Methods One hundred and ninety-two patients on MHD for an average of （86.1±30.0） months （range 6-181 months） were enrolled in this cross-sectional study. HCV antibody and HCV-RNA were measured in these MHD patients before hemodialysis by enzyme-linked immunosorbent assay （ELISA） and polymerase chain reaction （PCR） methods.According to the result, all the patients were then divided into two groups： GroupⅠwas positive for HCV antibody and/or HCV-RNA （n=32）, and Group Ⅱ was negative for HCV antibody and HCV-RNA （n=160）. The following information was obtained for all the patients： socio-demographic data, history of blood transfusions and kidney transplantation, and some laboratory values. The MHD patients who were positive for HCV antibody and/or HCV-RNA were followed for more than three years. The disease activities were graded into ＂asymptomatic＂ if alanine aminotransferase （ALT） was less than 40 U/L,＂low activities＂ if ALT was 40-79 U/L, and ＂high activities＂ if ALT was equal to or above 80 U/L.Results The prevalence of HCV infection in MHD patients in our dialysis unit in May 2009 was 16.7, which was significantly higher than in general population （3.2%）. Among the 32 MHD patients with HCV positive, 20 patients were positive for HCV antibody but negative for HCV-RNA, eight patients were positive both for HCV antibody and HCV-RNA,four patients were negative for HCV antibody but positive for HCV-RNA. Eleven patients had a history of kidney transplantation and 12 had a history of blood transfusion, which were significantly more than among the MHD patients without HCV. Thirty of the 32 MHD patients were asymptomatic. There were no significant differences in age, aspartate aminotransferase （AST）, ALT, or between HCV-RNA positive group and HCV-RNA negative group. But the dialysis duration in the HCV-RNA positive group was significantly longer than that in the HCV-RNA negative group. All the 20HCV-RNA negative patients were asymptomatic. Two of the 12 HCV-RNA positive patients had low activity. None of the 32 cases with HCV positive markers had cirrhosis.Conclusions A high prevalence of HCV infection in MHD patients is related to blood transfusion and kidney transplantation. Occult HCV infection is present in MHD patients. Chronic hepatitis C among MHD patients is mild in disease activity, and is not progressive, perhaps due to immunological abnormalities in these patients.     

保定市丙型肝炎病毒基因型分布特征及临床意义

目的 了解保定市丙型肝炎病毒（HCV）基因型分布特征及其与丙型肝炎病毒核糖核酸（HCV-RNA）载量、肝病程度的相关性,为其防治提供依据。方法 对2010年1月—2017年9月758例HCV-RNA阳性者进行HCV的基因型检测,分析其基因型与HCV-RNA含量和肝病程度的相关性。结果 758例HCV感染患者中1b型和2a型分别为50.79%（385/758）和36.68%（278/758）。HCV基因型的分布特征与性别、感染途径及种族差异均无统计学意义（P>0.05）。1b型患者ALT、AST、GGT及HCV-RNA水平均高于2a型和其他型患者,差异有统计学意义（P<0.05）。不同程度肝病患者的HCV基因型分布差异有统计学意义（P<0.05）,1b型丙肝肝硬化及肝癌比例高于其他基因型,差异有统计学意义（P<0.05）。1b型患者对长效干扰素加利巴韦林治疗的ETVR应答率（57.92％ vs 83.09％）和SVR应答率（24.68％ vs 60.79％）均明显低于2a型患者（P<0.05）。相关分析显示,1b型患者ALT与HCV-RNA呈正相关（r=0.685,P<0.01）。结论 保定市丙型肝炎病毒基因型流行株为1b型和2a型,其中1b型与丙肝肝硬化、肝癌的产生有一定的相关性。