巢式PCR检测关节炎患者血清人细小病毒B19DNA

目的：探讨关节炎患者人细小病毒Ｂ１９（ＨＰＶＢ１９）的感染情况以及ＨＰＶＢ１９感染与类风湿性关节炎（ＲＡ）的相关性．方法：应用巢式ＰＣＲ方法对７４例单发或多发性关节炎患者以及对照组５０例非病毒感染相关性疾病、正常健康献血员及正常健康儿童血清进行ＨＰＶＢ１９－ＤＮＡ检测．结果：①病例组ＨＰＶＢ１９－ＤＮＡ阳性１５例（２０．３％）,其中６例为ＲＡ患者（４０％）,对照组阳性１例（２％）,相差非常显著（Ｐ     

聚合酶链反应在乙型肝炎病毒感染诊断中的意义

用ＰＣＲ法检测１６６例乙型肝炎病毒感染者血清ＨＢＶ－ＤＮＡ。结果显示：ＨＢｓＡｇ、ＨＢｅＡｇ、抗－ＨＢｃ阳性，ＨＢｓＡｇ、抗－ＨＢｅ、抗－ＨＢｃ阳性和ＨＥｂＡｇ阳性组，ＨＢＶ－ＤＮＡ阳性率分别为９６．２％、２８．６％、９３．５％、ＨＢｓＡｇ单项阳性者中，检出ＨＢＶ－ＤＮＡ阳性７８例（孕妇占１９．２％），阳性率８１．３％。另外，在２０例血清标志物全部阴性对照组中发现ＨＢＶ－ＤＮＡ阳性１例，阳性率５．     

用PCR方法检测献血员的B_(19)病毒感染情况

目的：研究人微小病毒Ｂ１９在献血员中的感染情况。方法：采用ＰＣＲ技术对５００份献血员血清标本进行检测。结果：发现一例Ｂ１９病毒ＤＮＡ阳性，并用Ｋｏｃｈ设计的引物扩增标本和用ＨａｅⅢ，ＰｓｔⅠ和ＳｔｙⅠ酶切分析都证实为人微小病毒Ｂ１９。结论：国内献血者中有Ｂ１９病毒携带者。血液和血液制品有可能污染有Ｂ１９病毒。这个情况值得进一步研究。     

献血员乙型肝炎病毒感染状况的调查

为了解合格献血员中乙型肝炎（乙肝）病毒感染状况，用酶联免疫法和聚合酶链反应分别检测５８３例献血员ＨＢＶ血清标志物及ＨＢＶＤＮＡ。结果显示：ＨＢＶ－Ｍ阳性３２６例，检出率５５．９％；ＨＢＶＤＮＡ阳性５７例，检出率９．７８％。说明目前献血员隐匿着乙肝病毒感染。筛选献血员乙肝病毒的方法有待改进     

人细小病毒B19感染与特发性血小板减少性紫癜的相关性研究

目的：探讨特发性血小板减少紫癜（ＩＴＰ）的病因，与人细小病毒Ｂ１９感染的关系。方法：应用巢式ＰＣＲ技术检测８４例ＩＴＰ患儿存档骨髓涂片标本中人细小病毒Ｂ１９－ＤＮＡ，并用２４例巨幼红细胞贫血的病例作为对照，结果：８４例ＩＴＰ患儿经瑞氏染色存档的骨髓片中Ｂ１９－ＤＮＡ阳性３６例，阳性率为４２．９％，２４例贫血患儿骨髓中Ｂ１９－ＤＮＡ阳性３例，阳性率１２．５％，（ｘ＾２＝７．７０８，Ｐ〈０．０１），ｘ     

献血员乙型肝炎病毒感染状况的调查

为了解合格献血员中乙型肝炎（乙肝）病毒感染状况，用酶联免疫法和聚合酶链反应分别检测５８３例献血员ＨＢＶ血清标志物及ＨＢＶＤＮＡ。结果显示：ＨＢＶ－Ｍ阳性３２６例，检出率５５．９％，ＨＢＶＤＮＡ阳性５７例，检出率为９．７８％，说明目前献血员隐匿着乙肝病毒感染。筛选献血员乙肝病毒的方法有待改进。     

湖南地区输血传播肝炎病毒感染者的初步观察

为观察湖南地区输血传播病毒（ＴＴＶ）的感染情况,合成了特异性引物,采用巢式聚合酶链反应两次扩增血清ＴＴＶＤＮＡ。共检测７０例肝炎病人血清和４３例献血员血清。结果显示：在３８例血清ＨＢｓＡｇ阳性、ＨＢｅＡｇ和ＨＢＶＤＮＡ阴性的病人中,１０例ＴＴＶＤＮＡ阳性（２６．３％）,ＡＬＴ平均为（４５２±２３６）Ｕ·Ｌ＾－１;３２例血清甲－戊型和庚型肝炎标志物的阴性的病人中,１２例ＴＴＶＤＮＡ阳性（３７．５％）     

尖锐湿疣患者人乳头瘤病毒的快速检测与分型＊

ＲＤＢ是将我们设计的ＨＰＶ６Ｂ、１１、１６、１８、３１、３３、３５的７个序列特异性寡核苷酸（ＳＳＯ）探针分别依次固定在尼龙膜上,再与经ＰＣＲ扩增的ＤＮＡ靶序列杂交,即可在一张膜分辨７型ＨＰＶ ＤＮＡ的任一型。我们检测尖锐湿疣患者６２例,对其中２０例进行组织活检,阳性检出率为９５％（１９／２０）。阳性检出中,ＨＰＶ６Ｂ型８例（４０．０％）、ＨＰＶ１１型９例（４５．０％）、ＨＰＶ６Ｂ／１１型（混合型）     

人细小病毒B19感染与川崎病关系的初步研究

目的 研究人细小病毒Ｂ１９（ＨＰＶＢ１９）感染与川崎病（ＫＤ）的关系。方法 采用巢式聚合酶链反应技术,对３０例急性ＫＤ患儿和２５例健康儿童的血清进行检测。结果 ３０例急性ＫＤ患儿血清中ＨＰＶＢ１９－ＤＮＡ阳性７例,阳性率为２３．３％,其中６例合并冠状动脉扩张;对照组２５例血清中ＨＰＶＢ１９－ＤＮＡ均阴性。结论 ＨＰＶＢ１９可能是ＫＤ的重要病原菌之一,且可能参与了ＫＤ患儿冠状动脉并发病的形成。     

人微小病毒B19致胎肝造血细胞凋亡及其基因表达的意义

目的：研究人微小病毒Ｂ１９（ＨＰＶＢ１９）引致胎肝造血细胞凋亡及凋亡相关基因表达的变化,初步探讨ＨＰＶＢ１９引起死胎的机理．方法：采用原位末端标记法对２５例石蜡包埋死胎肝脏组织（其中ＨＰＶＢ１９ ＤＮＡ阳性者１０例,ＨＰＶＢ１９ ＤＮＡ阴性者１５例）进行细胞凋亡检测,并用免疫组化方法检测ｂｃ１－２,ｂａｘ表达情况．结果：１０例ＨＰＶＢ１９ ＤＮＡ阳性死胎肝脏组织中８例明显可见造血细胞的凋亡,６例b     

厦门地区献血者细小病毒B19抗体检测及流行病学分析

目的了解厦门地区献血者细小病毒B19感染情况,为输血保障工作提供依据。方法对部分厦门地区献血者标本进行细小病毒B19抗体检测,并对抗体阳性献血者进行流行病学分析;对其中部分细小病毒B19-Ig M阳性标本进行细小病毒DNA检测,分析细小病毒B19-Ig M阳性与病毒血症的关系。结果在1 078名献血者中,细小病毒B19-Ig M阳性率为4.7%(51/1 078),细小病毒B19-Ig G阳性率16.7%(181/1 078),总抗体阳性率20.3%(219/1 078);总抗体阳性率随年龄段增大而升高(χ2=7.948,P0.05),本省籍献血者阳性率低于外省籍(χ2=6.994,P0.05),不同职业献血者中农民的阳性率最高占35.47%,不同性别、血型的献血者阳性率差异无统计学意义;33份细小病毒B19-Ig M阳性标本仅检出2份细小病毒DNA阳性,献血者细小病毒B19核酸阳性率不低于0.18%(2/1 078)。结论厦门地区献血者中存在细小病毒感染,在今后的输血保障工作中应引起重视。     

1538例孕妇及其胎儿人微小病毒B19检测

目的：了解广州地区孕妇和胎儿人微小病毒Ｂ１９感染状况及传播途径。方法：对１５３８例孕产妇进行母血及脐血微小病毒ＤＮＡ检测。结果：发现微小病毒Ｂ１９孕产妇检出率１．０４％，脐血检出率０．２６％，并在胎盘组织发现２例微小病毒Ｂ１９阳性。结论：广州地区孕产妇存在微小病毒Ｂ１９的感染，并通过胎盘传播给胎儿。     

郑州市流产或死胎孕妇人微小病毒B19感染情况测定

目的:了解郑州市流产或死胎孕妇人微小病毒B19的感染情况。方法:采用ELISA和PCR方法分别检测郑州市237例正常孕妇及29例不明原因流产或死胎孕妇血清中B19IgG、B19IgM和B19DNA表达情况。结果:29例流产或死胎孕妇B19IgG、B19IgM和B19DNA阳性率分别为51.7%(15/29)、6.9%(2/29)和13.8%(4/29),237例正常孕妇B19IgG、B19IgM和B19DNA阳性率分别30.4%(72/237)、1.3%(3/237)和2.5%(6/237),差异均有统计学意义(P<0.05)。结论:郑州市孕妇中存在人微小病毒B19的感染,可能导致不明原因流产或死胎。     

微小病毒B19与早期自然流产关系的研究

目的:应用聚合酶链反应(PCR)技术检测早期自然流产和正常早期妊娠孕妇血清中人微小病毒B19(B19病毒)非结构蛋白DNA,对比分析早期自然流产的原因。方法:收集40例早期自然流产和70例正常早期妊娠孕妇的血清,应用套式PCR技术检测两组孕妇血清中的B19病毒非结构蛋白DNA。结果:40例早期自然流产孕妇血清中,5例(12.5%)B19病毒阳性,70例对照组孕妇血清中1例(1.43%)B19病毒阳性。两者比较,差异有显著性(P<0.05)。结论:B19病毒是导致早期自然流产的原因之一。     

Detection of Human Parvovirus B19 Nonstrutural Protein DNA by Nested-Polymerase Chain Reaction in Gravida Serum and Pregnant Tissues

A new nested-polymerase chain reaction （nested-PCR） assay was developed to detect human parvovirus B19 DNA corresponding to the nonstructural protein in clinical specimens in a routine diagnostic laboratory. The sensitivity of this highly specific assay was up to 0. 005 fg of B19 DNA. Parvovirus B19 was identified in sera of 20 pregnant women with abnormal pregnant outcome. Among these 20 cases, intrauterine parvovirus infection did exist in 7 pregnant women because parvovirus B19 DNA was detected in the pregnant tissues of them such as placenta tissues, chorionic villi, amniotic fluid, fetal spleen, liver and abdominal fluids.     

人细小病毒B19感染与早期自然流产关系的探讨

目的探讨人细小病毒B19（HPVB19）感染与早期自然流产的关系。方法用酶联免疫吸附试验（ELISA）法检测52例早期自然流产患者（研究组）和45例无异常人工流产孕妇（对照组）血清中HPVB19-IgM和IgG。结果研究组血中B19V-IgM阳性率为23.08%,而对照组阳性率为6.67%,2组间具有显著性差异（P〈0.05）;研究组近期HPVB19感染的概率是对照组的4.20倍（95%CI 1.10～15.99）。研究组B19V-IgG阳性率为32.69%,对照组为28.89%,2组差异无统计学意义（P〉0.05）。结论 HPVB19感染可能是导致早期自然流产的原因之一。     

Seroprevalence of human parvovirus B19 in healthy blood donors

Background

Human parvovirus B19 is an emerging transfusion transmitted infection. Although parvovirus B19 infection is connected with severe complications in some recipients, donor screening is not yet mandatory. To reduce the risk of contamination, plasma-pool screening and exclusion of highly viraemic donations are recommended. In this study the prevalence of parvovirus B19 in healthy blood donors was detected by ELISA.

Methods

A total of 1633 samples were screened for IgM and IgG antibodies against parvovirus B19 by ELISA. The initial 540 samples were screened for both IgM and IgG class antibodies and remaining 1093 samples were screened for only IgM class antibodies by ELISA.

Results

Net prevalence of IgM antibodies to human parvovirus B19 in our study was 7.53% and prevalence of IgG antibodies was 27.96%. Dual positivity (IgG and IgM) was 2.40%.

Conclusion

The seroprevalence of human parvovirus B19 among blood donor population in our study is high, and poses an adverse transfusion risk especially in high-risk group of patients who have no detectable antibodies to B19. Studies with large sample size are needed to validate these results.     

Seroprevalence of human parvovirus B19 in healthy blood donors

Background

Human parvovirus B19 is an emerging transfusion transmitted infection. Although parvovirus B19 infection is connected with severe complications in some recipients, donor screening is not yet mandatory. To reduce the risk of contamination, plasma-pool screening and exclusion of highly viraemic donations are recommended. In this study the prevalence of parvovirus B19 in healthy blood donors was detected by ELISA.

Methods

A total of 1633 samples were screened for IgM and IgG antibodies against parvovirus B19 by ELISA. The initial 540 samples were screened for both IgM and IgG class antibodies and remaining 1093 samples were screened for only IgM class antibodies by ELISA.

Results

Net prevalence of IgM antibodies to human parvovirus B19 in our study was 7.53% and prevalence of IgG antibodies was 27.96%. Dual positivity (IgG and IgM) was 2.40%.

Conclusion

The seroprevalence of human parvovirus B19 among blood donor population in our study is high, and poses an adverse transfusion risk especially in high-risk group of patients who have no detectable antibodies to B19. Studies with large sample size are needed to validate these results.     

RELATIONSHIP BETWEEN HUMAN PARVOVIRUS B19 INFECTION AND APLASTIC ANEMIA

Objective. To explore the relationship between human parvovirus B19 (HPV B19) infection and aplastic anemia (AA) and to investigate the role of HPV B19 in the occurrence of AA. Methods. The presence of HPV B19 DNA was detected in the peripheral blood samples of 60 patients with AA (children 38 and adults 22) by nested polymerase chain reaction (PCR) assay, and 30 healthy persons were selected as control. Results. Sixteen (26. 7 % ) of 60 AA cases were HPV B19 DNA positive, while all the samples in the control group were negative for HPV B19 (P = 0. 000914). Among the case group, the positive rates of HPV B19 DNA were21.4% (6 /28), 30.0% (3 / 10), 20.0% (1 /5) and 35.3% (6 / 17) in children acute AA (AAA), children chronic AA (CAA), adults AAA and adults CAA patients respectively, which were significant-ly higher than that in the control group, Furthermore, there was no remarkable difference between children AA and adults AA in the 16 HPV B19 DNA positive patients; neither was there between AAA and CAA. Conclusions. HPV B19 infection is not only correlated with the occurrence of children AAA and CAA, but also with adults AAA and CAA, and might be an important viral cause for AA in humans.