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1.
从河南部分地区收集鸡血清３１２份，用ＥＬＩＳＡ法分别检测：（１）抗甲型肝炎病毒抗体－ＩｇＭ（ＨＡＶＩｇＭ）；（２）乙型肝炎病毒“两对半”；（３）抗丙型肝炎病毒抗体。其结果３１２份鸡血清抗ＨＡＶＩｇＭ和抗ＨＣＶＡｂ全部阴性。乙肝病毒“两对半”血清阳性数分别为：ＨＢｓＡｇ１８份，抗－ＨＢｓ１６份，ＨＢｅＡｇ１４份，抗－ＨＢｅ２份；抗－ＨＢｃ零份。 相似文献
2.
奶牛类乙型肝炎病毒感染的诊断 总被引：1，自引：0，他引：1
河南省某奶牛场，采成年母牛血清２００份，鲜牛分，用ＥＬＩＳＡ法检测乙型肝炎“两对半”，阳性结果如下：牛血清ＨＢｓＡｇ７份，抗－ＨＢｓＡｇｌ份，抗－ＨＢｅ２份，抗－ＨＢｃ零份。１００份鲜牛奶阳性数：ＨＢｓＡｇ２份，抗－ＨＢｓ１０份，ＨＢｅＡｇ１份，抗－ＨＢｅ２，抗－ＨＢｃ零份。电镜观察到ＨＢＶ核心抗原阳性血清中有球形病毒颗粒。 相似文献
3.
PCR和ELISA法检测畜禽类乙型肝炎病毒的研究 总被引：3，自引：0，他引：3
从河南省部分地区收集鸡血清３１２份，猪血清２０４份，奶牛血清２００头份，分别用人乙型肝炎“两对邓ＨＢｓＡｇ，抗－ＨＢｓ，ＨＢｅＡｇ，抗－ＨＢｅ抗－ＨＢｃ试验盒检测。然后取经”两对半”系统检测有“＋”的鸡血清２６份，猪血清２５头份，奶牛血清２５头份，人血清４份，进行ＰＣＲ扩增，其扩增片断选择以ＨＢＶ－ＤＮＡ相对保守区域，扩增后的产物电泳３０ｍｉｎ，紫外灯下观察６００ｂｐ的片断为阳性，ＨＢＶ－ＤＮＡ阳 相似文献
4.
某猪场乙型肝炎病毒感染的血清流行病学调查报告 总被引：1，自引：0，他引：1
于某大型养猪场随机抽样人血清１２０份，猪血清２０４份，分别进行乙肝病毒“两对半”检测。１２０份人血清阳性数：ＨＢｓＡｇ１９份，抗－ＨＢｓ３４人份；ＨＢｅＡｇ７人份，抗ＨＢｅ２６人份；抗－ＨＢｃ１７人份。其中ＨＢｓＡｇ，ＨＢｅＡｇ，抗－ＨＢｅ的三阳性为５人份。２０４份猪血清阳性数：ＨＢｓＡｇ２４份，抗－ＨＢｓ３２份；ＨＢｅＡｇ１４份，抗－ＨＢｅ１份；抗－ＨＢｃ零份。 相似文献
5.
薛慧文 《甘肃农业大学学报》1998,33(1):9-12
用放射免疫分析方法测定了４５峰双峰驼血清样品中类人乙型肝炎表面抗原（ＨＢｓＡｇ）、乙型肝炎表面抗体（抗－ＨＢｓ）、乙型肝炎核心抗原（ＨＢｃＡｇ）、乙型肝炎核心抗体（抗－ＨＢｃ．ＩｇＭ）、乙型肝炎ｅ抗原（ＨＢｅＡｇ）和乙型肝炎ｅ抗体（抗－ＨＢｅ）,结果仅检测到１例抗－ＨＢｓ阳性样品,总阳性率为２．１１％,其ＳＸ／ＮｃＸ＝１２．２３３。 相似文献
6.
目的：观察乙型肝炎病毒（ＨＢＶ）与戊型肝炎病毒（ＨＥＶ）重叠感染对ＨＢＶ复制的影响。方法：以血清ＨＢｓＡｇ和抗ＨＥＶ均阳性患者３６例作为重叠组,以单纯ＨＢＶ感染患者３６例作为对照组。两组病例抗ＨＡＶ－ＩｇＭ和抗ＨＣＶ均为阴性。采用ＥＬＩＳＡ法测定两组的ＨＢＶ－Ｍ。结果：重叠组血清ＨＢｓＡｇ的阳性率明显低于对照组（Ｐ〈０．００１）,抗ＨＢｅ阳性率明显高于对照组（Ｐ〈０．０５）。结论：ＨＢＶ与ＨＥＶ重 相似文献
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8.
应用ＥＬＩＳＡ技术对３０份羊血清，肌肉肝脏标本进行了ＨＢＶ－ＨＢｓＡｇ水平检测，结果血清阳性率２０％，肝脏阳性率１０％。表明羊体内含有ＨＢＶ－ＨＢｓＡｇ相似的类属抗原及相关抗体，提示对羊体内检出ＨＢＶ－ＨＢｓＡｇ应起重视，建议对羊开展乙肝的在ＨＢＣ与人ＨＢＶ的异同及关系，寻找ＨＢＶ动物模型． 相似文献
9.
乙肝病毒感染者血清ｓ、ｅ抗原抗体系统与ＨＢＶ－ＤＮＡ的相关性黄静，龙尧，张武英（广东医学院附属医院感染内科，湛江５２４００１）以往临床上乙肝病毒（ＨＢＶ）感染者病毒标记物的检测主要利用反向血凝法（ＲＰＨＡ）和酶联免疫吸附法（ＥＬＩＳＡ）检测血清ＨＢｓ... 相似文献
10.
应用氯化铭密度梯度离心技术，结合Ｄｏｔ－ＥＬＩＳＡ试验、￣（３２）Ｐ标记的鸭乙型肝炎病毒（ＤＨＢＶ）ＤＮＡ探针进行斑点杂交试验，从ＤＨＢＶ阳性的启东鸭血清中分离得到高纯度的ＤＨＢｓＡｇ颗粒，直径范围４０～６０ｎｍ，在ＣｓＣｌ溶液中的浮密度为１．１５ｋｇ／Ｌ，大多数呈１０ｎｍ厚的空心结构，形态不规则，近似球形，部分颗粒表面有凹陷结构，少数颗粒表面出现缺刻。以纯化的ＤＨＢｓＡｓ免疫新西兰大白兔，制备了高度特异性的兔抗ＤＨＢｓ血清及其纯化的兔抗ＤＨＢｓＩｇＧ。 相似文献
11.
对甘肃省兰州市周边地区采集的300份猪血清的表面抗原(HBsAg)、E抗原(HBeAg)、E抗体(抗-HBe)、核心抗体(抗-HBc)、表面抗体(抗-HBs)5项指标进行检测,并从HBsAg和抗-HBs抗体阳性血清中提取DNA,进行乙型肝炎病毒(HBV)S基因和C基因的巢式PCR扩增、克隆、测序和序列分析.结果表明:血清学检测的上述5项指标阳性率分别为10.7%3、.0%、6.1%、3.3%和88.5%,大三阳(即HBsAg、HBeAg、抗-HBs抗体均为阳性)的猪血清样本6份,阳性率为2%;序列分析表明,猪类HBV的S基因和C基因与GenBank中的人HBV同源性达到99%,说明猪存在类HBV感染,且猪类HBV与人HBV存在相关关系. 相似文献
12.
ELISA法与FQ-PCR对HBV三种血清标志物检测结果的比较 总被引：1，自引：1，他引：0
为了探讨与评价联合检测乙型肝炎HBeAg和Pre-S1Ag、HBV-DNA等血清免疫标志物在乙型病毒性肝炎临床诊断、治疗中的意义,利用酶联免疫吸附试验（ELISA）和荧光实时定量聚合酶链式反应（FQ-PCR）,对619例疑似或确诊乙肝患者的血清样本分别进行乙肝免疫标志物HBeAg、Pre-S1Ag和HBV-DNA的联合检测。结果表明,血清乙肝免疫标志物HbeAg检测为阴性时,不能完全表明患者乙肝病毒复制终止或病毒血症的消失;血清Pre-S1Ag检测结果有助于乙型肝炎的早期诊断,也可以作为乙肝病毒DNA复制的指标之一;而FQ—PCR检测血清HBVDNA结果则有助于乙型肝炎病毒的抗原或抗体血清滴度较低时肝炎的诊断。 相似文献
13.
Proteolytic self-cleavage of hepatitis B virus core protein may generate serum e antigen 总被引：9，自引：0，他引：9
R H Miller 《Science (New York, N.Y.)》1987,236(4802):722-725
A model is proposed to explain the presence of the e antigen (HBeAg) of hepatitis B virus (HBV) in the serum of individuals infected with this virus. The e antigen, which has only recently been characterized, is a fragment of the virus core, or nucleocapsid, protein. Serum HBeAg is a valuable clinical marker for active HBV infection because its appearance correlates both with virus replication in the liver and with the presence of circulating virions. In this study a protease-like amino acid sequence was identified at the amino terminus of the core protein sequence. Experimental evidence indicates that HBeAg may be produced by proteolytic self-cleavage of the core protein. 相似文献
14.
C Babinet H Farza D Morello M Hadchouel C Pourcel 《Science (New York, N.Y.)》1985,230(4730):1160-1163
Two transgenic mice were obtained that contain in their chromosomes the complete hepatitis B virus (HBV) genome except for the core gene. These mice secrete particles of HBV surface antigen (HBsAg) in the serum. In one mouse, HBV DNA sequences that had integrated at two different sites were shown to segregate independently in the first filial generation (F1) and only one of the sequences allowed expression of the surface antigen. Among these animals the males produced five to ten times more HBsAg than the females. A 2.1-kilobase messenger RNA species comigrating with the major surface gene messenger RNA is expressed specifically in the liver in the two original mice. The results suggest that the HBV sequences introduced into the mice are able to confer a tissue-specific expression to the S gene. In addition, the HBV transgenic mice represent a new model for the chronic carrier state of hepatitis B virus infection. 相似文献
15.
F V Chisari C A Pinkert D R Milich P Filippi A McLachlan R D Palmiter R L Brinster 《Science (New York, N.Y.)》1985,230(4730):1157-1160
In an attempt to establish a model of the healthy carrier state in hepatitis B virus (HBV) infections, transgenic mice expressing HBV genes were produced. Fertilized one-cell eggs were microinjected with subgenomic fragments of HBV DNA containing the coding regions for the HBV surface antigen (HBsAg) and pre-S and X antigens. Either the normal (HBV) or metallothionein promoters were used to obtain expression of the HBV genes. There was no evidence of viral replication or tissue pathology. The integrated HBV DNA sequences were inherited in a normal Mendelian fashion. Three of 16 transgenic mice expressed HBV-encoded gene products to which they were immunologically tolerant. Expression was not tissue specific and may be influenced by the genomic integration site and cellular factors. Both HBsAg and pre-S antigen were detectable within the cytoplasm of hepatocytes and renal tubular epithelial cells. High serum concentrations of HBsAg were detectable and the secreted product appeared authentic as judged by mean density, morphology, mean particle diameter, polypeptide composition, and antigenicity. The absence of tissue pathology in these immunologically tolerant animals supports the hypothesis that cellular injury under these conditions is not a direct consequence of expression of the pre-S or HBs regions of the HBV genome. 相似文献
16.
目的:了解健康人群HBV感染及获得性免疫的状况,为更好的防治乙型肝炎提供客观依据.方法:采用ELISA法检测健康体检人群血清中HBsAg、HBsAb、HBeAg、HBeAb、HBcAb五项指标并对结果进行统计学分析.结果:8995例健康人群血清中HBV抗原抗体系统五项指标阴性者为48.4%,抗-HBs阳性者为44.7%,感染指标阳性者为6.9%,出现10种感染模式:五项指标均阴性;抗-HBs阳性;HBsAg阳性;抗-HBe阳性;HBsAg、HBeAg、HBcAb三项阳性;HBsAg、HBeAb、HBcAb三项阳性;HBsAg、HBeAb两项阳性;HBsAb、HBeAb、HBcAb三项阳性;HBeAb、HBcAb两项阳性和HBsAg、HBcAb两项阳性.结论:健康人群HBV感染近年来明显下降而免疫力明显上升,但尚有近1/2的人缺乏免疫力,并存在少数传染性强的乙型肝炎患者;应提倡健康人群普种乙肝疫苗,即使注射了乙肝疫苗也要注意自身一般性预防,常规检测乙肝五项指标,及时发现病情及早治疗. 相似文献
17.
应用酶联免疫吸附试验（ELISA）对辽宁地区鸡血清标本进行了乙型肝炎表面抗原（HBsAg）、乙型肝炎表面抗体（HBsAb）、乙型肝炎e抗原（HBeAg）和乙型肝炎核心抗体（HBcAb）的血清流行病学调查。结果显示：鸡HBsAg阳性率为9．09％；HBsAb阳性率为5．88％HBeAg、HBcAb阳性率为0。 相似文献
18.
本文分析了114例慢性乙型肝炎(CHB)患者血清e抗原抗体系统与病情和预后的关系。结果表明,HBeAg阳性者大多数表现为慢性迁延性肝炎(CPH),而HBeAg(-)抗HBe(+)者较多表现为慢性活动性肝炎(CAH)、肝硬化、慢重肝或肝癌。抗-HBe(+)者的病情和预后较HBeAg(+)者严重(P<0.001)。抗-HBe(+)者可能为乙型肝炎病毒(HBV)前C区突变株感染所致。分析CHB患者血清e抗原抗体系统以及其它HBV标记物的特点,对估计其所感染的HBV类型、肝病轻重和预后好坏,可能具有重要的临床意义。 相似文献