庚型肝炎

河南省庚型肝炎病毒感染情况和基因变异的研究——邢培清等(河南郑州河南省红十字血液中心450053)；《河南医学研究》，2000，9(4)：300-303[目的：为了探讨河南省庚型肝炎病毒的感染情况和河南株庚型肝炎病毒基因的变异特征。方法：利用逆转录-巢式-聚合酶链反应检测庚型肝炎病毒RNA。将扩增产物克隆入T载体，进行测序和分析。结果：非甲一非戊型肝炎中庚型肝炎病毒RNA阳性率为3．33％(1／30)，在丙型肝炎患中阳性率为6％(3／50)，献血员中阳性率为0．5％(1／200)，对河南株庚型肝炎病毒RNA阳性扩增、克隆、测序，与GenBank中HGV对应位置序列的同源性为90％-98．8％。结论：河南省存在庚型肝炎病毒的感染，HGV与HCV有重叠感染的现象。献血员中有HGV携带。     

庚型肝炎病毒致病性的临床研究

目的:调查庚型肝炎病毒(HGV)在各型病毒性肝炎中的感染率和探讨其对临床可能的影响。方法:以巢式逆转录PCR法检测1997年1月-1999年12月住院的5024例患者血清中HGV 5’NCR和NS5b基因片段,两者均检出判定为HGV感染,同时与临床类型、肝功能、疾病转归进行比较。结果:①5024例肝病患者中550例检出HGV RNA,总的感染率为10.9％,其中慢性肝炎、重型肝炎的感染明显高于急性非甲-戊型、急性甲型和急性乙型肝炎(14.2％和15.8％ vs 7.8％、4.6％、8.3％,P<0.05)。②急性戊型肝炎合并HGV感染率高达14.2％,明显高于其他急性病毒性肝炎(P<0.05)。③重叠HGV感染与否并不影响各型肝炎的肝功能损害程度,也不影响重型肝炎患者的存活率(61.43％ vs 59.85％,P>0.05)。④27例单一感染HGV的惠性肝炎患者。均临床治愈出院,HGV的病毒血症与肝炎的临床表现没有相关性,37％(10/27)患者在6个月随访期中在肝功能恢复正常后仍有HGV病毒血症。结论:①HGV感染可发生于各型病毒性肝炎患者。②急性戊型肝炎合并HGV感染明显高于其他急性病毒性肝炎的原因,值得进一步探讨。③HGV感染对人类没有重要的致病性,HGV感染不是原因不明的非甲-戊型肝炎的主要病因。     

各型病毒性肝炎患者庚型肝炎病毒感染状况

目的:了解武汉地区各型病毒性肝炎患者中庚型肝炎病毒(HGV)感染的情况。方法:用酶联免疫吸附试验(ELISA)及逆转录聚合酶链反应(RT-PCR)方法测定各型病毒性肝炎患者的抗HGV和HGV RNA,并对庚肝病毒感染者进行临床分析。结果:351例各型病毒性肝炎患者中抗HGV阳性者56例,占15.05％;此56例中HGV RNA阳性者21例,占37.50％。各型病毒性肝炎患者中抗HGV阳性率及庚肝抗体阳性者中HGV RNA阳性率分别为:甲肝14.29％(5/35)及20.00％(1/5);乙肝17.29％(37/214)及35.14％(13/37);丙肝14.52％(9/62)及55.56％(5/9);戊肝4.00％(1/25),0.00％(0/1);非甲～戊肝26.67％(4/15),50.00％(2/4)。56例抗HGV阳性者中43例有输血、使用血制品或静脉药癌史,占76.79％。HGV感染在肝炎各临床类型分布为急性、慢性和重型肝炎患者无明显差异,且无性别和年龄分布的差异。HBV重叠感染HGV患者的SALT及TBil水平明显高于单纯HBV感染者(P<0.05),而HGV和其它肝炎病毒((HAV、HCV、HEV)重叠感染患者与单纯其它肝炎病毒感染者的SALT及TBiL水平无明显差异(P>0.05)。结论:武汉地区各型病毒性肝炎患者均可存在HGV感染。HGV可单独感染或与其它病毒混合感染。血液传播是HGV感染的主要途径。乙型肝炎患者合并庚肝病毒重叠感染可加重病情,而甲、丙、戊型肝     

庚型肝炎病毒感染的初步调查

采用酶联免疫法(ELISA)检测94例病毒性肝炎患者血清中抗庚型肝炎病毒抗体(抗-HGV),阳性率为23.4％。其中急性肝炎、慢性肝炎、重型肝炎抗-HGV阳性率分别为21.4％、21.1％、30.4％,在22例抗-HGV阳性病人中,HBV与HGV重叠感染率为36.3％。39例非甲-戊型肝炎抗HGV的阳性率(35.5％)明显高于55例乙型肝炎的阳性率(14.5％、P<0.05),说明HGV感染主要存在于非甲-戊型肝炎病人中。23例重型肝炎中有16例死亡,抗HGV(+)7例全部死亡,而单纯HBV感染的死亡率为56.25％。结果显示:HGV感染系非甲-戊型肝炎的主要原因,HGV可以与HBV重叠感染,且可能影响重型肝炎的愈后。     

不同临床型肝病患者中庚型肝炎病毒感染的研究

目的:了解不同临床型肝病患者的庚型肝炎病毒(HGV)感染状况。方法:应用酶联免疫法(ELISA)检测不同临床型肝病患者血清中抗-HGV,并对抗-HGV阳性血清应用逆转录套式聚合酶链反应法(RT-nPCR)检测HGV RNA。结果:肝硬变,慢性乙型和丙型肝炎病人及HBsAg携带者的抗-HGV阳性率(分别为36.36％、26.2％、12.5％和12.0％),均显著高于急性肝炎(4.17％)。急性和慢性非甲-戊型肝炎病人的抗-HGV阳性率也较高,分别为33.3％(1/3)和16.67％(1/6)。各临床型肝病患者中,抗-HGV阳性和阴性组血清天门冬氨酸转氨酶(AST)和丙氨酸转氨酶(ALT)水平无明显差异。结论:HGV与乙型和丙型肝炎病毒(HBV和HCV)具有较高的共同感染率,部分非甲-戊型肝炎为HGV感染;重叠感染HGV似并不加重肝损害程度。     

庚型肝炎病毒与其他肝炎病毒重叠感染状况的调查

目的：了解庚型肝炎病毒重叠其他肝炎病毒感染状况。方法：分别对497倒不同病原的病毒性肝炎患者进行HGV RNA(RT PCR)及其中180例患者进行抗-HGV(ELISA)的检测。结果：①HGV在各型病毒性肝炎患者中总的重叠感染率为7.8％(39／497)。②HGV重叠感染丙型肝炎病毒感染率为189％(10／53)．高于其他肝炎病毒的重叠感染率，P<0．01。③有输血史的患者HGV RNA阳性率(16．0％，12/75)高于无输血史的患者(6．4％．27／422)，P<0.01。④重叠HGV感染组与非重叠HGV感染组比较，两组肝功能指标无统计学差异(P>0．05)。⑤抗-HGV的检出率为12．8％(23／180)，但其中仅有21.7％(5／23)同时为HGV RNA阳性。结论：①输血可能是传播HGV的主要途径之一，但HGV也可经非输血途径传播。②HGV致病性可能较弱。③抗HGV阳性并不一定代表HGV病毒复制。     

17例庚型肝炎临床病理分析

对17例经逆转录聚合酶链反应(RT-PCR)法检测HGV RNA阳性的庚型肝炎患者进行临床和/或肝脏组织分析。结果发现经输血感染者8例(47.1％),散发性病例9例(52.9％)。单纯HGV感染者8例(47.1％),HGV和HBV或HCV二重、三重感染者9例(52.9％)。临床病理分型发现急性肝炎2例,慢性肝炎12例,重型肝炎2例和肝硬变1例。单纯HGV感染多呈隐匿发病,症状轻,,无黄疸,ALT轻度升高,但慢性化程度高。本文结果提示HGV感染易致病程慢性化,病理损伤轻,HGV与HBV重叠感染时,HGV有可能干扰HBV的复制。     

糖尿病患者庚型肝炎病毒感染及其临床意义

目的　了解糖尿病患者 (I型和II型 )庚型肝炎病毒 (HGV)感染情况及临床意义。方法　应用逆转录套式聚合酶链反应 (RT -NestedPCR)检测 183例糖尿病患者血清标本中的HGVRNA ,部分扩增产物进行核苷酸序列分析 ,所有患者均进行ALT检查。结果　I型和II型糖尿病患者血清标本中HGV检出阳性率分别为 4 6 7% (7/ 15 )和 2 0 2 % (34/ 16 8) ,总阳性率为 2 2 4 % (41/ 183) ;5例HGV 5’ -NCR和NS3区扩增产物与文献报道的核苷酸序列同源性分别为 87 2 %～ 89 4 %和 79 8%～ 83 5 % ;HGV感染的糖尿病患者ALT异常 (5 2～ 88U)的比例 (7 1% ,13/ 183)明显高于未感染HGV的糖尿病患者 (1 1% ,2 / 183)。结论　糖尿病患者 ,尤其是I型糖尿病患者的HGV感染率较高 ;不同地区检出的HGV基因组RNA片段的核苷酸序列存在一定的差异 ;HGV感染可导致部分患者轻微的肝脏损害。     

375例药瘾者庚型肝炎病毒感染状况调查

目的:调查湖北地区药瘾者HGV感染状况。方法:检查药瘾者的血清HGV感染指标,抗HGV和HGV-RNA分别用ELISA和RT-PCR法检测。结果:375例药瘾者HGV的感染率31.47％(118例)。静脉药瘾者HGV-RNA阳性率32.92％,口服药瘾者为27.96％,两者比较有显著差异(x~2=4.36,P<0.05);女性药瘾者HGV-RNA阳性率(32.84％)高于男性药瘾者(13.46％,X~2=11.55,P<0.01);成瘾时间大于2年者的HGV-RNA阳性率(52.76％),显著高于成瘾时间小于2年者(9.66％,X~2=79.06,P<0.01)。所有HGV感染者的肝功能正常。结论:药瘾者具有较高的HGV感染率。     

急性病毒性肝炎患者中庚型肝炎病毒RNA检测研究

为观察庚型肝炎病毒在急性病毒性肝炎中感染情况,对239例急性肝炎患者的血清,采用两步法筛选进行HGV RNA的检测,并经HGV RNA确证试验,结果显示:HGV RNA阳性者9例,其中合并乙肝1例,合并丙肝3例,合并戊肝1例,非甲-戊型肝炎中占4例。提示:①HGV与其它型肝炎病毒重叠感染较多。②6例患者无输血史,而HGV RNA仍为阳性,提示HGV的输血外传播。③NA-E急性肝炎患者中,HGV的阳性率为23.5％,证实HGV为其病原之一,同时提示还可能存在其它的致病因子。     

RT-PCR法检测HGV RNA和ELISA法检测抗-HGV意义探讨

目的:探讨检测HGV RNA和抗-HGV的临床意义。方法:采用逆转录聚合酶链反应(RT-PCR)技术和ELISA法分别对351例住院肝炎患者血清中HGV RNA和抗-HGV进行检测。结果:351例中有32例(9.11％)HGV RNA阳性,34例(9.68％)抗HGV阳性,5例(1.41％)两项同时阳性;在11例患者不同住院期间的检测中发现,7例检测结果无变化,1例HGV RNA阴转,1例抗-HGV阴转,2例抗-HGV阳转。结论:HGV RNA和抗-HGV同时阳性的病例比较少。大多数情况两者不是同时存在,诊断意义可能有所差异;HGV RNA阳性表示现症感染,而抗-HGV阳性可能是感染后期或恢复期的标志。在HGV感染过程中会出现HGV RNA阴转或抗-HGV阴转和阳转的可能。     

血液透析患者丙型和庚型肝炎病毒感染的研究

为了解血液透析患者中丙型肝炎病毒(HCV)和庚型肝炎病毒(HGV)的感染情况,并探讨相对危险因素,对48例在302医院和武警总医院进行维持性血液透析的患者用逆转录聚合酶链(PCR)反应和酶联免疫法检测了血清中HCV RNA、HGV RNA及其抗体水平。结果显示,抗-HCV和HCV RNA阳     

GBV-C/HGV and HCV infection in mixed cryoglobulinaemia

Recently, a new, suspected hepatotropic virus has been identified. Named GBV-C/HGV, this virus shares with the hepatitis C virus (HCV) routes of transmission and molecular organization. Indeed, a proportion of HCV-infected patients (10-25%) are also carriers of GBV-C/HGV. Since mixed cryoglobulinaemia (MC) is closely associated with HCV infection, the aim of this study was to determine the prevalence of GBV-C/HGV infection in MC patients, and to investigate whether the double infection influenced the clinical and/or laboratory aspects of the disease. 52 patients affected by MC were studied. 100 patients affected by HCV-positive chronic liver disease (CLD) without MC were used as control group. To determine the prevalence of GBV-C/HGV infection in general population, 150 blood donors were studied, as well as 80 patients affected by non-A-E CLD. Among the MC patients, only five (9.6%) were positive for both HCV and GBV-C/HGV infection. No difference was found between patients with and without double infection as regards main clinical and laboratory aspects. Among HCV-positive CLD cases, 27 were positive for double infection. Among blood donors, the prevalence of GBV-C/HGV infection was 8.0%, whereas in cases with cryptogenetic CLD the prevalence was 5.0%. In conclusion, these data show that GBV-C/HGV infection does not play any role in the pathogenesis of MC.     

Prevalence of hepatitis G virus RNA in a monocentric population of French haemophiliacs

Hepatitis G virus (HGV) and hepatitis GB virus (GBV-C) have been reported as possible causes of non-A–E transfusional hepatitis. To assess the prevalence of hepatitis G virus infection in haemophiliacs we retrospectively investigated the presence of viral RNA in 92 patients with and without HCV infection. HGV/GBV-C RNA was reverse transcribed and amplified with primers from the 5' non-coding region of the genome. RNA was detected in 16/92 patients (17.4%). Restriction enzyme analysis revealed that the 16 patients belonged to the HGV-like genotype. Serology with E2-specific antibodies demonstrated that HGV viraemia underestimates previous infection by HGV. 33 patients were positive for HGV; all but two have cleared HGV RNA. 47/92 patients had a marker of prior infection by HGV.
No difference between HGV RNA positive and negative patients was observed concerning age, diagnosis, HIV and HCV status. Previous HBV infection correlated with the frequency of HGV infection. There was no difference in alanine aminotransferase levels between HGV positive and negative patients. All 18 patients exposed to only virally inactivated plasma-derived concentrates were negative for both HGV RNA and anti E2 antibodies.
Prior exposure to untreated concentrates correlated with HGV viraemia ( P =0.03), HGV seropositivity ( P =0.0002), and markers of HGV infection ( P <0.0001).
In haemophiliacs with a past exposure to non-inactivated concentrates, persistence of HCV RNA (53/74 patients) was more frequent than HGV RNA persistence (16/74 patients) although HGV viraemia is more frequent than HCV viraemia in blood donors. This may be related to a greater ability of individuals to clear HGV infection and suggests that hepatitis G virus infection in multi-transfused patients has a better outcome than infection with other blood-borne viruses.     

Serological prevalence and risk factor analysis of hepatitis G virus infection in Hubei Province of China

Hepatitis G virus (HGV),also known as GB virus C, is a recently cloned virus which may be associated with human non A-E hepatitis[1，2] It is parenterally transmitted and usually coinfected or superinfected with hepatitis B or hepatitis C virus[3-5]. Some investigations have been reported on the seroprevalence and molecular prevalence of HGV infection in different areas and different population[6-15]. Current infection of HGV is diagnosed by detection of HGV RNA, and past infection with HGV is detectable by testing anti-HGV envelope protein (E2)[16-17]. To investigate the prevalence of HGV in Hubei Province, a central area of the People's Republic of China, ELISA and RT-PCR were employed to detect serum anti-HGV and HGV RNA in 1516 patients who were divided into 16 groups.     

乌鲁木齐地区部分高危人群庚型肝炎病毒感染状况的研究

目的 了解新疆乌鲁木齐地区部分高危人群中庚型肝炎病毒的感染状况。方法 首先运用酶标法(ELISA)检测不同人群中庚型肝炎病毒抗体(抗-HGV),然后对抗-HGV阳性血清运用逆转录聚合酶链反应(RT-PCR)检测HGV RNA。结果 在各类高危人群中,抗-HGV阳性率分别是:手术受血者为35.59％(21/59),静脉吸毒者为38％(19/50),非甲～戊型肝炎病人为18％(9/50);均显著高于对照人群(2％,1/50,P<0.05);职业供血员抗-HGV阳性率也较高(13.79％,8/58),但与对照人群无显著性差异(P>0.05);58份抗-HGV阳性血清有18份血清HGV RNA阳性,其中手术受血者血清1份,静脉吸毒者血清12份,职业供血员血清2份,非甲～戊型肝炎病人血清3份。结论 (1)本研究首次在乌鲁木齐地区部分高危人群中证实有较高的庚型肝炎病毒感染率;(2)再次证实该病毒主要通过注射、输血途径传播。     

Prevalence of hepatitis G virus (HGV) infection in an endemic area of hepatitis C virus (HCV) infection

BACKGROUND/AIMS: We investigated the prevalence of hepatitis G virus infection among inhabitants of a hepatitis C virus endemic area. METHODOLOGY: Two hundred and eighty-eight inhabitants, who underwent medical examinations for health screening, were enrolled in this epidemiological study. HGV RNA and HCV RNA were detected by polymerase chain reaction. We also examined anti-HGV envelope protein (E2) antibodies in all serum samples. RESULTS: In these 288 inhabitants, we found anti-HCV antibodies (HCV-Ab) and HCV RNA in 28.5% and 17.4%, respectively. HGV RNA and anti-HGV E2 were detected in 9 (3.1%) and 16 (5.5%), respectively. One patient was positive for both HGV RNA and anti-HGV E2. The exposure rate, expressed as the percentage of people with HGV RNA and/or anti-HGV E2, was 8.3%, which was significantly lower than the incidence of positive HCV-Ab. Of the 24 patients with HGV RNA and/or anti-HGV E2, 15 (62.5%) were positive for HCV-Ab, of those HCV RNA was detected in 9 (37.5%). Further, we found a higher prevalence of HGV exposure in patients with HCV-Ab than in those without (8.3% vs. 4.4%). CONCLUSIONS: HGV infection was not identical to the epidemic hepatitis C virus infection among inhabitants of this town, suggesting that hepatitis C virus might be less infectious than hepatitis C virus.