拉米夫定治疗慢性乙型肝炎停药后的临床观察

探讨拉米夫定药后慢性乙型肝炎患者临床变化的意义。对34例停用拉米夫定的慢性乙型肝炎患者，在停药1月、3月、6月时检测血清ALT、HBeAg、抗－HBe、HBVDNA，观察其转变情况。拉米夫定治疗前、后出现HBeAg至抗－HBe转变者为另一组（A组），未出现ABeAg至抗－HBe转变者为一组（B组），对比两组患者停药1月、3月、6月时ALT、HBV标志的变化。结果显示停药1月、3月、6月时ALT异常经累加后A、B两组分别0％和18．52％（P＞0．05）、0％和33．33％（P＞0．05）、14．29％和59．26％（P＜0．05）；HBVDNA阳转率分别为0％和25．93％（P＞0．05）、0％和44．44％（P＜0．05）、28．57％和77．78％（P＜0．05）。表明随着停药时间的延长。病情复发者增加。血清HBeAg至抗－HBe转变可作为拉米夫定停药的一个标志。     

拉米夫定治疗其他方法抗病毒治疗失败的慢性乙型肝炎患者的疗效

目的观察拉米夫定对复发性慢性乙型肝炎患者的疗效和安全性。方法选择27例其他方法抗病毒治疗失败的慢性乙型肝炎患者,给予拉米夫定100mg口服,每日一次,连续服用12个月。结果治疗后12个月时ALT和血清总胆红素平均值(分别为52.7±26.5U/L和19.7±21.1μmol/L),与治疗前平均值(211.3±182.4U/L和54.6±28.8μmol/L)相比显著下降(P<0.01);其ALT复常率为88.9%(24/27),HBV DNA阴转率77.8%(21/27),HBeAg阴转率29.6%(8/27),HBeAg/抗-HBe血清转换率18.5%(5/27)。停药后6个月内有7例复发。治疗全程未见严重不良反应。结论拉米夫定治疗其他方法抗病毒治疗失败的慢性乙型肝炎患者也能够迅速抑制病毒的复制,使肝功能复常,而且安全、方便。     

拉米夫定治疗慢性乙型肝炎的临床观察

目的研究拉米夫定治疗慢性乙型肝炎的疗效。方法慢性乙型肝炎患者以治疗前ALT水平分为A、B两组。A组32例,HBsAg、HBeAg和HBV DNA阳性,ALT在6-20×ULN(正常值上限)和B组32例,HBsAg、HBeAg和HBVDNA阳性,ALT在2-5×ULN。两组患者均单用拉米夫定,观察用药后第3天、7天、10天1、5天3、0天、60天、90天、52周患者血清和HBV DNA定量变化。结果治疗90天后A、B两组的HBV DNA累计阴转率分别为90.6%(29/32)和71.9%(23/32)。治疗52周后,A、B两组的HBeAg阴转率分别为65.6%(21/32)4、0.6%(13/32),P<0.05。HBeAg/抗-HBe转换率分别为34.4%(11/32)、15.6%(5/32),P<0.05。在治疗后30天内A、B两组均存在不同程度的ALT反跳,A组ALT反跳的幅度高于B组。B组ALT出现反跳的峰值迟于A组。结论拉米夫定能强烈抑制HBV DNA的复制。治疗前ALT的水平和治疗后ALT的反跳幅度及峰值出现的迟缓极大可能反映机体对拉米夫定治疗后诱发的免疫应答强度,并与持久疗效有关。     

拉米夫定治疗慢性乙型肝炎病人的长期疗效

通过多中心,承机,双盲,安慰剂对照的临床试验,研究拉米夫定（ｌａｍｉｖｕｄｉｎｅ）对慢性乙型肝炎（乙肝）病人的疗效和安全性。方法随机选择３２２例慢性乙肝病拉米夫定治疗（１００ｍｇ／ｄ）,１０７例病人服用安慰剂作对照,共治疗１２周,在１２周治疗结束后,拉米夫定组和安慰剂组病人均继续服用拉米夫定１００ｍｇ治疗至５２周。疗效评估包括临床症状和体征,肝功能和ＨＢＶ复制指标。结果治疗１２周,拉米夫定组ＨＢＶ     

拉米夫定治疗慢性重型乙型肝炎疗效观察

观察拉米夫定治疗慢性重型乙型肝炎的疗效和安全性。98例慢性重型乙型肝炎患者随机分为2组。对照组36例,给予常规的综合治疗;治疗组62例,在常规综合治疗的基础上,加拉米夫定100mg,每日1次口服。分别观察2组治疗前后肝功能和凝血酶原活动度(PTA)、血清HBV DNA水平变化及疗效情况。结果表明,治疗组的总有效率为79．0%,对照组为52．8%,(P＜0．01)。治疗后4周,与对照组比较,治疗组存活患者的总胆红素(TBil)降低(P＜0．001)、凝血酶原活动度(PTA)升高(P＜0．001)、血清HBV DNA水平降低得更明显(P＜0．001)。拉米夫定治疗期间未发现明显的毒副作用,治疗安全性良好。拉米夫定治疗慢性重型乙型肝炎有较好的疗效和安全性。     

拉米夫定联合赛若金治疗慢性乙型肝炎的近期疗效

目的;探讨拉米夫定(LMVD)联合赛若金(IFN-αlb)对慢性乙型肝炎(CHB)患者抗病毒疗效。方法:观察LMVD联合IFN-αlb组与单用LMVD或IFN-αlb组CHB患者ALT、HBeAg和HBV DNA变化。结果:各组患者ALT复常率相互比较无显著差异(P>0.05).联合组HBeAg阴转率显著高于两药单用组(P<0.01),HBV DNA阴转率显著高于IFN-αlb组(P<0.01)。结论:LMVD联合IFN-αlb治疗CHB患者在抗乙肝病毒(HBV)方面具有协同作用,能发挥各自优点和克服各自缺点。     

拉米夫定治疗慢性乙型肝炎患者的疗效观察

目的探讨拉米夫定治疗慢性乙型肝炎患者的疗效与安全性。方法60例患者给予拉米夫定0．1口服，1次／日，疗程一年；其中13例患者进行治疗前后的肝组织病理学检查。结果治疗一年后肝组织学纤维化和炎症程度改善率为69．23％；36．3％的患者ALT复常；85％的患者HBV DNA水平由阳性转变为检测线以下，而HBeAg／抗-HBe血清转换率只有7．1％。结论拉米夫定可明显降低患者血清HBV DNA水平，并能改善肝组织学的炎症和纤维化程度，且用药安全，但HBeAg／抗-HBe血清转换率低。     

拉米夫定治疗慢性乙型肝炎疗效观察

1999年12月至2002年12月，我院应用拉米夫定治疗慢性乙型肝炎88例，效果较好。现报告如下。     

拉米夫定治疗慢性重型乙型肝炎疗效观察

慢性重型乙型肝炎病情严重 ,预后凶险 ,其治疗长期以来无明显突破 ,是临床上急待解决的难题。我们试用拉米夫定治疗慢性重型乙型肝炎 ,取得了较好疗效 ,现将结果报道如下。材料和方法一、研究对象40例慢性重型乙型病毒性肝炎患者均为我院 1998年1月～ 2 0 0 0年 4月住院患者 ,其中男 37例 ,女 3例 ,年龄 2 0～ 6 5岁。治疗前 40例患者均有重度黄疸 (血清胆红素 >171μｍｏｌ/Ｌ) ;凝血酶原时间 (ＰＴ)明显延长 ,凝血酶原活动度 (ＰＴＡ)均 <40 %。 40例患者血清ＨＢｓＡｇ与ＨＢＶＤＮＡ(聚合酶链反应 )均阳性。甲、丙、丁和戊型肝炎病毒标…     

拉米夫定治疗慢性乙型肝炎发生YMDD变异的研究

目的探讨拉米夫定治疗慢性乙型肝炎（CHB）发生YMDD变异的临床意义。方法分别用荧光定量PCR、ELISA检测72例用拉米夫定治疗的CHB患者治疗前（0个月）、治疗中（9、12、18个月）YMDD变异的情况、HBVDNA定量水平、两对半等指标。结果72例CHB患者中,拉米夫定治疗前未检查出YMDD变异,治疗9、12、18个月分别检出YMDD变异8例（11.1%）,17例（23.6%）,28例（38.9%）,随治疗时间的延长,YMDD变异率升高（P〈0.05）。另外用药前HBVDNA定量〉108copies/ml与HBVDNA定量〈108copies/ml相比YMDD变异率显著升高（P〈0.005）。HBeAg阳性组与HBeAg阴性组的患者在不同治疗时间YMDD变异率,差异无显著性（P〉0.05）。结论YMDD变异的发生随治疗时间的延长而增加。血清病毒载量可作为应用拉米夫定治疗YMDD变异产生的早期预测指标。     

拉米夫定治疗慢性重型肝炎疗效观察

将45例慢性重型乙型肝炎患者随机分为治疗组22例、对照组23例.治疗组在综合保肝治疗的基础上口服拉米夫定100mg、每日1次,对照组仅用综合保肝治疗,疗程均为1年;观察症状、体征、肝功能、血清HBVM和HBVDNA的变化.结果显示,治疗后两组患者症状体征均有一定程度的改善;治疗结束时,治疗组治愈好转率(95.45%)高于对照组(73.91%),病死率(4.5%)低于对照组(17.39%),P均＜0.05.治疗前治疗组13例HBVDNA阴性、9例阳性(650.47±597.22fg/ml),治疗后阴性者持续阴性,阳性者均逐渐转阴;对照组15例HBVDNA阴性、8例阳性(579.52±542.86fg/ml),治疗后阴性者6例阳转,阳性者持续阳性.治疗3个月时,治疗组ALT复常率高于对照组;治疗8个月后治疗组复发率4.7%(1/21),对照组为57.14%(8/14),P＜0.01.提示拉米夫定治疗慢性重型乙型肝炎可使病毒持久转阴,复发率和病死率低.     

拉米夫定治疗慢性乙型肝炎2年临床试验的总结

目的 评估拉米夫定长期治疗慢性乙型肝炎的疗效和安全性,以及治疗过程中产生病毒变异的临床影响。方法 系多中心的双盲,随机、安慰剂对照的临床试验。４２９例ＨＢｓＡｇ和ＨＢｅＡｇ阳性的慢性乙型肝炎,按３：１随机分成拉米夫定治疗组和对照组,分别服用拉米夫定１００ｍｇ／ｄ和安慰剂共１２周,此后所有病人均服用拉米夫定,共观察２年,结果 治疗１２周,拉米夫定组血清ＨＢＶ ＤＮＡ累计阴转率（〈１．６ｐｇ／ｍｌ）为     

Relationship between hepatitis B virus DNA levels and liver histology in patients with chronic hepatitis B

AIM： To study the relationship between hepatitis B virus （HBV） DNA levels and liver histology in patients with chronic hepatitis B （CHB） and to determine the prevalence and characteristics of hepatitis B e antigen （HBeAg） negative patients.
METHODS： A total of 213 patients with CHB were studied, and serum HBV DNA levels were measured by the COBAS Amplicor HBV Monitor test. All patients were divided into two groups according to the HBeAg status.The correlation between serum HBV DNA levels and liver damage （liver histology and biochemistry） was explored.
RESULTS： Of the 213 patients with serum HBV DNA levels higher than 10^5 copies/mL, 178 （83.6%） were HBeAg positive, 35 （16.4%） were HBeAg negative. The serum HBV DNA levels were not correlated to the age,history of CHB, histological grade and stage of liver disease in either HBeAg negative or HBeAg positive patients. There was no correlation between serum levels of HBV DNA and alanine aminotransferanse （ALT）,aspartate aminotrans-ferase （AST） in HBeAg positive patients. In HBeAg negative patients, there was no correlation between serum levels of HBV DNA and AST,while serum DNA levels correlated with ALT （r = 0.351, P = 0.042）. The grade （G） of liver disease correlated with ALT and AST （P 〈 0.05, r = 0.205, 0.327 respectively）in HBeAg positive patients. In HBeAg negative patients,correlations were shown between ALT, AST and the G （P 〈 0.01, and r = 0.862, 0.802 respectively）. HBeAg negative patients were older （35 ± 9 years vs 30 ±9 years, P 〈 0.05 ） and had a longer history of HBV infection （8 ± 4 years vs 6 ± 4 years, P 〈 0.05） and a lower HBV DNA level than HBeAg positive patients （8.4± 1.7 Log HBV DNA vs 9.8 ± 1.3 Log HBV DNA, P 〈0.001）. There were no significant differences in sex ratio,ALT and AST levels and liver histology between the two groups.
CONCLUSION： Serum HBV DNA level is not correlated to histological grade or stage of liver disease in CHB patients with HBV DNA mor     

YMDD mutations in patients with chronic hepatitis B untreated with antiviral medicines

AIM: To polymerase P region (YMDD) mutations of hepatitis B virus gene (HBV DNA) in patients with chronic hepatitis B (CHB) untreated with antiviral medicines and to explore its correlation with pre-c-zone mutations, HBV genotypes and HBV DNA level, and to observe its curative effect. METHODS: A total of 104 cases (38 cases in group of familial aggregation and 66 cases in group of non-familial aggregation) were randomly chosen from 226 patients with CHB who did not receive the treatment of lamivudine (LAM) and any other antivirus drugs within the last one year. Their serum YMDD mutations were detected by microcosmic nucleic acid and cross-nucleic acid quantitative determination, HBV genotypes by PCR-microcosmic nucleic acid crossELISA, HBV DNA quantitative determination and fluorescence ration PCR analysis, hepatitis B virus markers (HBVM) by ELISA. LAM was taken by 10 patients with YMDD mutations and its curative effect was observed. RESULTS: Twenty-eight cases (26.9%) had YMDD mutations, of them 11 cases (28.9%) were in familial aggregation group (38 cases) and 17 cases (25.8%) in nonfamilial aggregation group (66 cases) with no significant difference between the two groups. Twenty-seven point one percent (16/59) cases were positive for HBeAg YMDD mutations, and 26.7% (12/45) cases were negative for HBeAg and positive for anti-HBe. There was also no significant difference between the two groups. Different YMDD incidence rate existed in different HBV genotypes. HBV DNA level did not have a positive correlation with the incidence of YMDD mutations. LAM was effective for all patients with mutations. CONCLUSION: Wild mutant strains in HBV and their incidence rate have no significant difference between familial aggregation and non-familial aggregation. It may have no significant relationship between YMDD mutations and pre-c-zone mutations. HBV DNA level may not have a positive correlation with YMDD mutations. LAM is clinically effective for CHB patients with YMDD mutations.     

乙型肝炎病毒基因型对拉米夫定抗病毒疗效的影响

HBV现已鉴定出A～H 8种基因型[1],其分布有较明显的地域性[2].HBV基因型与抗病毒疗效密切相关[3-4],但是HBV基因型与抗病毒疗效的确切关系需要大样本、多中心、不同地域独立人群的验证.     

阿德福韦治疗拉米夫定耐药慢性乙型肝炎患者的耐药率及耐药株进化情况

目的观察阿德福韦单药长期治疗拉米夫定耐药CHB患者的耐药率,以及阿德福韦耐药相关性HBV变异及耐药株的动态变化。方法23例发生YMDD变异的CHB患者停用拉米夫定,口服阿德福韦10mg,1次/d,治疗68～116周,从患者基线和阿德福韦单药治疗后不同时间点的血清中抽提HBV DNA,采用直接PCR产物测序法进行耐药变异分析;对其中1例发生阿德福韦耐药患者的一系列血清进行基因克隆分析其HBV耐药株的进化情况。结果阿德福韦单药治疗48周的耐药率为4.3%;96周的耐药率为10.5%。HBV耐药株进化分析结果显示:阿德福韦单药治疗后,YMDD变异株比例逐渐下降而rtA181S变异株出现并逐渐增多,随着治疗时间的延长,又出现了rtA181S N236T联合变异株。阿德福韦变异株(rtA181S和rtA181S N236T联合变异株)对继起的阿德福韦联合拉米夫定治疗病毒学应答较差,并出现了1例阿德福韦与拉米夫定多药耐药联合变异株(rtM204I rtN236T)。结论拉米夫定耐药的CHB患者,换用阿德福韦单药长期治疗后,耐药率逐渐增加并可选择出多药耐药联合变异株。     

Long-term clinical impact of occult hepatitis B virus infection in chronic hepatitis B patients

BACKGROUND/AIMS: Long-term clinical outcomes of occult hepatitis B virus (HBV) infection were studied. METHODS: Fifteen chronic hepatitis B patients were monitored for a median of 4.4 years (range 0.9-15.3) after hepatitis B surface antigen (HBsAg) seroclearance. Serum HBV DNA was measured by real-time detection polymerase chain reaction. Thirteen patients underwent liver biopsies at the end of follow-up and liver histology was evaluated by Ishak score. Liver HBV DNA was also measured for 12 patients. RESULTS: At the end of follow-up, HBV viremia was absent in 13 (87%) patients, and antibody titers to hepatitis B core antigen showed an inverse correlation with time from HBsAg seroclearance (r=-0.554; P=0.0040). However, all patients retained liver HBV DNA and tested positive for the covalently closed circular HBV DNA replicative intermediate. The hepatic HBV DNA loads had no relation to liver histology. Paired biopsies from 11 patients disclosed that each necroinflammatory score significantly improved after HBsAg seroclearance. Amelioration of liver fibrosis was also evident in eight (73%) patients (P=0.0391 by signed rank test). CONCLUSIONS: A long-standing but strongly suppressed HBV infection may confer histological amelioration after HBsAg seroclearance.     

拉米夫定治疗慢性乙型肝炎患者3年疗效观察

目的初步探讨LAM长期治疗HBeAg阳性和HBeAg阴性的两组慢性乙型肝炎(CHB)患者生化学、病毒学指标的变化及临床转归的差异。方法对63例诊断为CHB的患者均给予拉米夫定100mg,每日一次,进行3年的随访观察,动态检测患者的HBV血清标志物,HBV DNA,ALT、AFP、YMDD变异、B超等指标。结果拉米夫定治疗HBeAg阳性和HBeAg阴性的CHB患者3年时,HBeAg阳性组ALT复常率、HBV DNA阴转率、肝细胞癌发生率及HBsAg阴转率分别为64.7%、64.7%、0%、0%;HBeAg阴性组ALT复常率、HBV DNA阴转率、肝细胞癌发生率及HBsAg阴转率分别为70.4%、77.8%、0%、0%。两组间ALT复常率、HBV DNA阴转率、肝细胞癌发生率及HBsAg阴转率两组差异均无统计学意义(P0.05);HBeAg阳性组YMDD变异率(43.3%)显著高于HBeAg阴性组(18.2%),x2=4.720,P0.05;HBeAg阴性组肝硬化患者(37.0%)显著高于HBeAg阳性组(5.9%),x2=3.866,P0.05。结论拉米夫定治疗HBeAg阳性CHB患者较HBeAg阴性患者更容易发生YMDD变异,HBeAg阴性CHB患者较HBeAg阳性患者更易发生肝硬化。     

Measurement of hepatitis B virus core-related antigen as predicting factor for relapse after cessation of lamivudine therapy for chronic hepatitis B virus infection

Background

Prolonged lamivudine therapy has two major problems: breakthrough hepatitis during treatment and relapse of aminotransferase (ALT) after cessation of the therapy. The aim of this study was to examine factors that could predict ALT flare after stopping lamivudine therapy.

Methods

We analyzed 22 Japanese patients with chronic hepatitis B infection, in whom lamivudine therapy was stopped after HBV DNA level had been gone undetectable (<3.7 LGE/ml) during at least six consecutive months. The post-treatment followed up was carried for 28 months in median (range 9–41). HBV core-related antigen (HBcrAg) assay was assessed using newly developed assay.

Results

After cessation of lamivudine therapy, 11 patients (50%) had relapsed (reactivation of serum ALT >80 IU/l, relapsers) and remaining 11 (50%) did not relapse (non-relapsers). In the univariate comparison of relapsers versus non-relapsers, HBcrAg level at lamivudine cessation point (4.5 ± 1.0 versus 3.4 ± 0.9; p = 0.0145) has been shown as a significant predictive factor for non-relapse. All patients with HBcrAg <3.0 log U/ml at the cessation point had no ALT flares. Multivariate analysis on effects of 10 factors (age, sex, cirrhosis, pretreatment ALT level, HBV DNA level, HBcrAg level, mean months till undetectable HBV DNA, duration of undetectable HBV DNA and HBcrAg level at lamivudine cessation point), indicated that HBcrAg level at lamivudine cessation point <3.4 log U/ml was the only independent predictive factor for absence of the post-treatment relapse.

Conclusions

HBcrAg level at lamivudine cessation point might be useful as a prognostic predictor of response to lamivudine therapy cessation. The measurement of HBcrAg is a useful additional test for monitoring chronic HBV infection.