替比夫定治疗失代偿期乙型肝炎肝硬化的临床观察

目的观察替比夫定治疗失代偿期乙型肝炎肝硬化患者48周疗效。方法 64例乙型肝炎肝硬化患者分成两组,34例给予替比夫定600mg/d治疗,30例给予拉米夫定100mg/d,持续治疗48周。观察治疗后病毒学、生化学、凝血酶原时间及Child-Pugh计分等变化情况。结果替比夫定组患者血清HBV DNA对数值在治疗前为（5.35±0.58）log10拷贝/ml,在治疗后12、24、36、48w时血清HBV DNA下降值依次为（1.88±0.84）log10拷贝/ml,（2.11±0.84）log10拷贝/ml,（2.17±0.74）log10拷贝/ml,（2.36±0.57）log10拷贝/ml,相比拉米夫定组下降值有明显的统计学差异（P〈0.05）。在治疗24周时ALT、AST明显下降,Alb、TBil、PT及Child-Pugh积分等指标均有所改善（P〈0.05）。结论替比夫定治疗于失代偿乙型肝炎肝硬化患者在48周内即能快速有效抑制病毒复制,使HBV DNA水平明显下降,同时可以改善肝功能及Child-Pugh积分等指标。     

替比夫定治疗乙型肝炎肝硬化的疗效观察

目的 观察替比夫定治疗乙型肝炎肝硬化患者48周时的疗效.方法 80例乙型肝炎肝硬化患者分为两组,每组40例,分别给予口服替比夫定600 mg/d或拉米夫定100 mg/d,持续治疗48周.观察治疗不同时间点患者的病毒学、生物化学指标、凝血酶原活动度(PTA)、Child-Pugh积分及病毒耐药等变化情况.结果 替比夫定组患者血清HBV DNA在治疗前为(6.52±1.33)log10拷贝/ml,在接受替比夫定治疗后2、4、8,12、24、48周时的下降值分别为(2.09±1.30)log10拷贝/ml、(2.83±1.22)log,o拷贝/ml、(3.23±1.27)log10拷贝/ml、(3.42±1.32)log10拷贝/ml、(3.65±1.30)log10拷贝/ml及(3.67±1.43)log10拷贝/ml.在24、48周时均有92.5%(37/40)的患者HBV DNA阴转.在治疗24、48周时,分别有30.0%(6/20)及35.0%(7/20)的患者出现了HBeAg血清学转换.在治疗48周时ALT、AST明显下降,白蛋白、总胆红素、PTA及Child Pugh积分等指标均有所改善(P<0.05),治疗48周时替比夫定组YMDD变异率为5.0%.治疗后24、48周HBV DNA水平下降值、HBV DNA阴转率替比夫定组高于拉米夫定组(P<0.05).结论 替比夫定能快速有效抑制乙型肝炎肝硬化患者的病毒复制,使HBV DNA水平下降,同时可以改善肝功能,且具有较低耐药率.     

替比夫定治疗慢性乙型肝炎疗效及其影响因素

目的评价替比夫定治疗慢性乙型肝炎52周的疗效及其影响因素。方法采用替比夫定治疗22例慢性乙型肝炎患者52周,对治疗前后ALT、HBVDNA、HBeAg消失、HBeAg血清转换、组织学改善、基因型耐药进行比较。同时根据患者治疗前状况的评估和治疗4周、8周、12周和24周的HBVDNA来预测影响疗效的因素。结果治疗52周,HBV DNA和ALT与治疗前相比明显下降,差异有统计学意义（P〈0．001）。患者治疗前的评估对52周的疗效无明显影响,而治疗24周HBV DNA水平低于300拷贝／ml时,52周HBV检测不到、ALT复常、HBeAg消失和HBeAg血清转换的比例明显增高,基因型耐药明显减少,差异有统计学意义（P〈0．05）。结论替比夫定能明显抑制HBV DNA复制,使ALT复常,促进HBeAg血清转换。治疗24周的HBV DNA抑制水平可预测治疗52周的疗效。     

替比夫定与拉米夫定治疗慢性乙型肝炎临床疗效比较研究

目的:观察和比较替比夫定、拉米夫定治疗慢性乙型肝炎的1年疗效和不良反应.方法:采用1∶1随机、对照设计.共入组慢性乙型肝炎患者240例,其中HBeAg阳性和阴性各120例,各组分为替比夫定组60例,拉米夫定组各60例.结果:治疗52周时,HBeAg阳性和阴性患者中,替比夫定组血清HBV DNA自基线下降水平、HBV DNA低于检测下限的比率、病毒反跳率和耐药率,均优于拉米夫定组,P＜0.05.HBeAg阳性患者中替比夫定组HBeAg阴转率和治疗应答反应率高于拉米夫定组,差异有显著性意义,P＜0.05;替比夫定组HBeAg血清转换高于拉米夫定组,差异无显著性意义,P＞0.05.HBeAg阳性和阴性患者中,替比夫定与拉米夫定两组ALT复常率差异无显著性意义,P＞0.05.替比夫定不良反应轻微,与拉米夫定类似.结论:替比夫定较拉米夫定具有更强的抑制HBV DNA复制能力以及较少的耐药率和病毒反跳率.     

替比夫定治疗HBeAgeAg阳性慢性乙型肝炎疗效的预测指标

目的探讨替比夫定治疗HBeAg阳性慢性乙型肝炎（CHB）48周的疗效及其预测指标。方法采用替比夫定（LdT）600 mg/d治疗78例HBeAg阳性CHB患者48周,从性别、年龄、ALT和HBV DNA基线、早期病毒学应答（治疗12周时HBV DNA转阴）为预测因素,分析其对治疗48周疗效的影响。结果性别、年龄与治疗8～48周时HBV DNA转阴无相关性（P〉0.05）;5 ULN≤ALT≤10 ULN组治疗24、36及48周时HBV DNA转阴率高于2 ULN≤ALT≤5 ULN组（P〈0.05,P〈0.01）;HBV DNA 106～105拷贝/ml组治疗48周时ALT复常率和HBV DNA转阴率高于HBV DNA〉107拷贝/ml组（P〈0.05）;早期病毒学应答组治疗48周时HBeAg阴转率ALT复常率和HBV DNA转阴率也高于非应答组（治疗12周时HBV DNA≥500拷贝/ml）（P〈0.05）。结论 ALT、HBV DNA基线、早期病毒学应答可能可以作为预测替比夫定抗HBV疗效的指标     

口服替比夫定治疗慢性乙型肝炎效果观察

目的观察替比夫定治疗慢性乙型肝炎的临床疗效及不良反应。方法 174例慢性乙型肝炎患者随机分为替比夫定组86例和拉米夫定组88例,分别给予替比夫定600 mg/d和拉米夫定100 mg/d,连续应用48周,观察治疗后12、24、36、48周时血清HBV DNA定量、病毒性肝炎标志物、肝功、肾功、肌酸激酶及药物不良反应等指标。结果治疗后12、24、36、48周替比夫定组血清HBV DNA水平明显低于拉米夫定组(P均<0.01),替比夫定组HBV DNA转阴率、ALT复常率均高于拉米夫定组(P<0.05或<0.01),治疗后24、36、48周时HBeAg转阴率及完全应答率替比夫定组均高于拉米夫定组(P<0.05)。48周时病毒反跳率替比夫定组低于拉米夫定组(P<0.05)。两组药物不良反应发生率相近(P>0.05)。结论与口服拉米夫定比较,口服替比夫定治疗慢性乙型肝炎效果较好。     

替比夫定治疗活动性乙型肝炎肝硬化疗效观察

目的观察和比较替比夫定与拉米夫定治疗活动性乙型肝炎肝硬化的疗效和安全性。方法 65例活动性乙型肝炎肝硬化患者被随机分为治疗组（30例）和对照组（35例）。在常规综合治疗的基础上,治疗组给予替比夫定600mg/d口服,对照组给予拉米夫定100mg/d口服,观察72周。结果两组随治疗时间延长,患者血清HBVDNA水平下降,肝功能改善,Child-Pugh计分降低;替比夫定组治疗24周、48周和72周时,患者血清HBV DNA水平及治疗72周时ALT和Child-Pugh计分下降均优于拉米夫定组（P〈0.05或P〈0.01）;两组ALT复常、HBV DNA阴转和HBeAg阴转率无统计学差异（P〉0.05）。结论替比夫定和拉米夫定均可有效地抑制乙型肝炎肝硬化患者体内的HBV复制,改善肝功能。     

恩替卡韦治疗拉米夫定失效的慢性乙型肝炎患者3年临床研究

目的评价恩替卡韦对重庆地区拉米夫定治疗失效的CHB患者3年的疗效和安全性。方法选取拉米夫定治疗失效的CHB患者32例,其中恩替卡韦组28例(剂量1.0 mg/d),安慰剂组4例。完成12周的双盲冶疗后,所有患者均接受开放的恩替卡韦1.0mg/d,持续治疗至168周。定期检测血清HBV DNA水平、HBeAg、抗-HBe和肝功能的变化情况。结果在接受恩替卡韦治疗后,患者血清HBV DNA水平对数值的均数在2周内由9.14log10拷贝/ml迅速下降至6.72log10拷贝/ml,其后持续平稳下降,4、8、12、24、48周分别下降至6.28 log10、5.46 log10、5.10 log10、4.49 log10、4.41 log10拷贝/ml,至96周时下降至3.91 log10拷贝/ml,其后下降速度减慢,至144周和168周时分别为4.05 log10、4.21 log10拷贝/ml。HBV DNA>10~5拷贝/ml的百分比治疗前为100%,随着服药时间的延长逐渐下降,在12周时下降至46.43%,其后仍逐渐下降,到96周时仅为17.86%。与其相反,HBV DNA<10~3拷贝/ml的百分比在治疗前为0,从第8周开始逐渐上升(7.14%),12周时为10.71%,尤其在96周明显上升至46.43%,到168周时为57.14%。168周末HBeAg阴转率为10.07%。服用恩替卡韦后ALT下降较迅速,12周后均数达正常水平,且3年内持续低于40 U/L。3年治疗期间,患者不良事件发生率为21%,有1例发生严重不良事件。结论恩替卡韦治疗拉米夫定失效的CHB患者,可明显抑制HBV DNA复制,HBV DNA水平降低迅速且持久;能促进ALT复常;使用安全,耐受性良好。     

替比夫定治疗慢性乙型肝炎108周的临床疗效

目的 探讨替比夫定治疗慢性乙型肝炎(CHB)患者108周的临床疗效.方法 随机选择就诊于吉林大学中日联谊医院未经过抗病毒治疗的72例CHB患者,其中包括35例肝硬化患者,给予口服替比夫定600 mg,1次/d,连续治疗108周.观察患者治疗前、后血清HBV DNA水平,肝功能及HBV标志物.根据12周和24周时的HBV DNA水平将患者分为＜3 log_(10)拷贝/ml和≥3 log_(10)拷贝/ml两组,比较其在治疗108周时的疗效.疗效比较采用χ~2检验.结果 替比夫定治疗4周时,HBV DNA不可测率及ALT复常率分别为37.5%和33.3%,至108周时达到87.5%和91.7%.46例HBeAg阳性患者治疗108周时HBeAg消失率及血清学转换率分别为39.1%和23.9%.12周时HBV DNA水平＜3 log_(10)拷贝/ml的患者,108周时的HBV DNA不可测率及HBeAg血清学转换率明显高于HBV DNA≥3 log_(10)拷贝/ml的患者(χ~2值分别为7.96和3.94,P值均＜0.05).24周时HBV DNA＜3log_(10)拷贝/ml的患者,108周时的HBV DNA不可测率高于HBVDNA≥3 log_(10)拷贝/ml的患者(χ~2=10.13,P＜0.05),耐药发生率低于HBV DNA≥3 log_(10)拷贝/ml的患者(χ~2=4.82,P＜0.05).替比夫定抗病毒治疗108周时肝硬化患者Child-Pugh分级较治疗前明显改善,其中Child A级患者比例明显增加(χ~2=5.83,P＜0.05).结论 替比夫定可强效、快速抑制HBV DNA复制,HBeAg血清学转换率高,长期治疗可明显改善肝硬化患者Child-Pugh评分,获得早期病毒学应答者的耐药发生率低.     

替比夫定在预防肝移植后乙肝复发中的应用

目的评价替比夫定在预防肝移植后乙肝复发中的疗效及安全性。方法54例乙肝终末期肝病息者移植术后应用替比夫定及乙肝免疫球蛋白（HBIG）预防乙肝复发;6例移植术后应用拉米夫定出现病毒变异者停用拉米夫定,换用替比夫定＋阿德福韦。观察用药后HBVDNA复制、HBsAg以及HBeAg的变化及不良作用。结果54例患者[29例术前HBVDNA高复制（〉10^3 copies／ml）及25例低复制（〈10^3 copiea／ml）]在术后6个月时HBV DNA、HBsAg、HBeAg全部阴转;6例移植术后乙肝复发病例加用替比夫定3个月以上,5例乙肝标记物转阴。结论肝移植术前应用替比夫定,术后继续替比夫定治疗,可有效改善肝功能、抑制肝炎复发。     

恩替卡韦和拉米夫定治疗慢性乙型肝炎二年病毒学、血清学和生化结果的随机对比研究

目的比较恩替卡韦（ETV）和拉米夫定（LVD）初治慢性乙型肝炎（CHB）患者2年的疗效和安全性。方法519例核苷类似物初治CHB患者随机分别接受ETV（0．5mg／d）或LVD（100mg／d）治疗，第一阶段疗程52周。在48周时获得综合应答的患者于52周停止治疗并随访。在48周时获得部分应答的患者将继续双盲治疗至96周。评估患者HBVDNA水平、丙氨酸氨基转移酶（ALT）复常、血清学标志和安全性方面的情况，并且对基线时HBeAg（＋）患者评估HBeAg转阴和血清转换。结果共338例患者进入96周治疗，其中ETV组193例，I。VD组145例。疗程结束时，ETV组有74％患者HBVDNA测不出（〈300拷贝／m1），96％患者ALT复常。I。VD组HBVDNA测不出和ALT复常率分别为41％和82％。ETV组和LVD组实现HBeAg血清学转换的比例分别为11％和19％。总计2年内所有经治患者HBVDNA的累计转阴率ETV组为79％，LVD组为46％（P〈0．0001）。两组的不良事件和安全性特征相当。结论初治患者中，ETV治疗96周的HBVDNA抑制率和AI。T复常率优于I。VD，而两者的安全性相当。【关键词】乙型肝炎病毒；慢性乙型肝炎；恩替卡韦；拉米夫定；临床试验     

Efficacy of switching to telbivudine in chronic hepatitis B patients treated previously with lamivudine

Background: Telbivudine showed greater antiviral suppression than lamivudine in phase II and III clinical trials. Aims: The present phase IIIb, randomized, double‐blind, multicentre global trial assessed the antiviral efficacy and safety of telbivudine switch in chronic hepatitis B (CHB) patients who exhibited persistent viraemia under lamivudine therapy. Methods: HBeAg‐positive and HBeAg‐negative adult patients (N=246) with persistent viraemia [hepatitis B virus (HBV) DNA>3 log₁₀ copies/ml] under lamivudine treatment for 12–52 weeks were randomized (1:1) to continue lamivudine 100 mg/day or switch to telbivudine 600 mg/day for 1 year. Primary endpoint was the reduction in serum HBV DNA levels from baseline at Week 24. Results: The mean reduction in serum HBV DNA levels from baseline with telbivudine was significantly higher than lamivudine at Week 24 (?1.9 ± 0.18 vs. ?0.9 ± 0.27 log₁₀ copies/ml; P<0.001) and maintained through 1 year. The rate of treatment failure was significantly lower (P<0.001) for patients who switched to telbivudine (5%) compared with those who continued lamivudine (20%) after 52 weeks of treatment. In the telbivudine group, treatment failure occurred in only five patients with >24 weeks of prior lamivudine treatment, all associated with pre‐existent lamivudine‐resistant mutations. Genotypic resistance rates were higher in patients continuing lamivudine compared with those who switched to telbivudine with <24 weeks of lamivudine exposure. Both treatments were well tolerated with similar safety profiles. Conclusions: Early (≤24 weeks) switch to telbivudine improves virological outcomes in CHB patients with persistent viral replication under lamivudine treatment.     

A 1-year trial of telbivudine, lamivudine, and the combination in patients with hepatitis B e antigen-positive chronic hepatitis B

BACKGROUND & AIMS: A previous 4-week trial of telbivudine in patients with chronic hepatitis B indicated marked antiviral effects with good tolerability, leading to the present 1-year phase 2b trial. METHODS: This randomized, double-blind, multicenter trial evaluated the efficacy and safety of telbivudine 400 or 600 mg/day and telbivudine 400 or 600 mg/day plus lamivudine 100 mg/day (Comb400 and Comb600) compared with lamivudine 100 mg/day in hepatitis B e antigen (HBeAg)-positive adults with compensated chronic hepatitis B. RESULTS: A total of 104 patients were randomized 1:1:1:1:1 among the 5 groups. Median reductions in serum hepatitis B virus (HBV) DNA levels at week 52 (log(10) copies/mL) were as follows: lamivudine, 4.66; telbivudine 400 mg, 6.43; telbivudine 600 mg, 6.09; Comb400, 6.40; and Comb600, 6.05. At week 52, telbivudine monotherapy showed a significantly greater mean reduction in HBV DNA levels (6.01 vs 4.57 log(10) copies/mL; P < .05), clearance of polymerase chain reaction-detectable HBV DNA (61% vs 32%; P < .05), and normalization of alanine aminotransferase levels (86% vs 63%; P < .05) compared with lamivudine monotherapy, with proportionally greater HBeAg seroconversion (31% vs 22%) and less viral breakthrough (4.5% vs 15.8%) (P = NS for both). Combination treatment was not better than telbivudine alone. All treatments were well tolerated. In exploratory scientific analyses, clinical efficacy at 1 year appeared related to reduction in HBV DNA levels in the first 6 months of treatment. CONCLUSIONS: Patients with chronic hepatitis B treated with telbivudine exhibited significantly greater virologic and biochemical responses compared with lamivudine. Results with the combination regimens were similar to those obtained with telbivudine alone. These data support the ongoing phase 3 evaluation of telbivudine for treatment of patients with chronic hepatitis B.     

Telbivudine versus lamivudine in Chinese patients with chronic hepatitis B: Results at 1 year of a randomized, double-blind trial

Chronic hepatitis B and its life-threatening sequelae are highly prevalent in China. There is a need for effective new therapies to suppress hepatitis B virus (HBV) replication and ameliorate liver disease. In this study, we compared the efficacy of telbivudine, a nucleoside analogue, with lamivudine in Chinese patients. In this phase III, double-blind, multicenter trial conducted in China, 332 patients with compensated hepatitis B e antigen (HBeAg)-positive or HBeAg-negative chronic hepatitis B were randomly assigned to treatment with 600 mg of telbivudine or 100 mg of lamivudine daily for 104 weeks. The primary efficacy endpoint was reduction in serum HBV DNA levels at week 52 of treatment. Secondary endpoints included clearance of HBV DNA to undetectable levels, HBeAg loss and seroconversion, therapeutic response, and alanine aminotransferase (ALT) normalization. Viral resistance and safety were assessed. At week 52, among 290 HBeAg-positive patients, mean reductions of serum HBV DNA were significantly greater in telbivudine recipients than lamivudine recipients (6.3 log(10) versus 5.5 log(10), P < 0.001), and HBV DNA was polymerase chain reaction-negative in significantly more telbivudine recipients than lamivudine recipients (67% versus 38%, P < 0.001). ALT normalization (87% versus 75%, P = 0.007), therapeutic response (85% versus 62%, P = 0.001), and HBeAg loss (31% versus 20%, P = 0.047) were also significantly more common in the telbivudine group. Treatment effects showed similar patterns in the smaller HBeAg-negative group (n = 42). Viral resistance in telbivudine recipients was approximately half that observed with lamivudine; however, this difference was not statistically significant. Clinical adverse events were similar in the two treatment groups. CONCLUSION: In Chinese patients with chronic hepatitis B, telbivudine treatment for 52 weeks provided greater antiviral and clinical efficacy than lamivudine, with less resistance.     

Effect of lamivudine therapy on the serum covalently closed-circular (ccc) DNA of chronic hepatitis B infection

OBJECTIVE: To determine the effect of 1-yr lamivudine treatment on serum covalently closed-circular DNA (cccDNA) level. PATIENTS AND METHOD: Serum total HBV DNA and cccDNA levels at baseline, week 24, and week 52 were measured in 82 lamivudine-treated patients, 17 of whom received 1-yr placebo and acted as controls. RESULTS: There was a significant reduction in the cccDNA levels from baseline (median 3.0 x 10(6) copies/ml) to week 24 (33,476 copies/ml) and week 52 (48,694 copies/ml) (p < 0.001 for both). The median reduction in cccDNA level at week 24 and 52 were 2.21 and 2.12 logs, respectively, which were significantly greater than those of controls (0.31 log, p < 0.001; 0.2 log, p < 0.001, respectively). Fifteen patients (18.3%) developed YMDD mutations by week 52. Compared to patients without YMDD mutations, patients with YMDD mutations had significantly less median reduction of total HBV DNA level (4.44 vs 3.65 logs, respectively, p= 0.02) and cccDNA level (2.27 vs 1.65 logs, respectively, p= 0.016) at week 24 and significantly less median reduction of cccDNA at week 52 (2.35 vs 0.8 logs respectively, p < 0.001). CONCLUSIONS: One-year lamivudine treatment decreased serum cccDNA level by 2 logs. The chance of YMDD mutations at week 52 was related to the magnitude of viral suppression at week 24.     

阿德福韦酯治疗e抗原阳性慢性乙型肝炎的疗效预测指标探讨

目的 评价HBeAg阳性慢性乙型肝炎患者治疗前ALT、HBeAg、HBV DNA水平以及治疗12周时HBV抑制程度对阿德福韦酯(ADV)治疗52周患者疗效的预测价值.方法 98例HBeAg阳性成年慢性乙型肝炎患者进入研究.筛选时血浆HBV DNA定量≥1×106拷贝/ml,血清ALT水平1.5～10倍正常值上限(ULN).患者接受ADV 10mg/d,共52周治疗.定期随访,检测血清HBV标志物及HBV DNA.比较不同基线ALT、HBeAg、HBV DNA水平以及治疗12周时不同血清HBV DNA水平患者治疗52周时的疗效差异. 结果 ADV治疗52周时,血清HBV DNA＜103拷贝/ml的患者,基线ALT＞5 × ULN者(72.7%)高于ALT＜2×ULN者(38.0%),P＜0.05;基线HBeAg≤350 s/co者(66.7%)高于HBeAg＞350 s/co者(30.2%),P＜0.01;基线HBV DNA≤108拷贝/ml者(53.0%)高于血清HBV DNA＞108拷贝/ml者(34.4%),P＜0.05.52周HBeAg血清学转换率在基线HBeAg水平≤350 s/co者和HBeAg＞350 s/co者分别为42.2%和7.5%(P＜0.01).治疗12周时血清HBV DNA＜103拷贝/ml、103～105拷贝/ml和＞105拷贝/ml组患者,52周时血清HBV DNA＜103拷贝/ml的比例分别为82.6%、57.1%和17.5%,组间差异均有统计学意义(P值均＜0.05);3组患者HBeAg血清学转换率分别为52.2%、25.7%和5.0%,组间差异均有统计学意义(P值均＜0.05);3组患者52周ALT复常率分别为100%、83%和75%,血清HBV DNA＜103拷贝/ml组高于＞105拷贝/ml组(P＜0.05).相关分析显示,治疗52周时的血清HBV DNA水平及HBeAg血清转换与治疗12周时血清HBV DNA水平中度相关(P＜0.01).结论 HBeAg阳性慢性乙型肝炎患者ADV治疗12周时血清HBV DNA水平对治疗52周的疗效的预测价值优于基线指标,治疗12周时血清HBV DNA＜103拷贝/ml者,52周时能达到更佳的疗效.     

替比夫定与恩替卡韦治疗e抗原阳性慢性乙型肝炎的近期疗效比较

目的 观察替比夫定与恩替卡韦治疗HBeAg阳性慢性乙型肝炎患者近期疗效及安全性. 方法 80例患者随机分为替比夫定治疗组和恩替卡韦治疗组,分别在治疗前,治疗第12周和24周检测患者血清HBV DNA水平、ALT复常率、HBeAg阴转率和HBeAg/抗-HBe转换率,并比较不同基线血清HBV DNA水平患者治疗12周和24周时的血清HBV DNA下降值,HBV DNA低于检测值率,HBV DNA＜104拷贝/ml患者的比例.观察治疗过程中药物使用的安全性.结果 替比夫定和恩替卡韦组患者的基础人口学、临床和病毒学特征均具有可比性.治疗12周时,替比夫定组和恩替卡韦组患者HBV DNA低于检测值率均为50.0%,ALT复常率分别为52.5%和60.0%(P＞0.05),HBeAg阴转率分别为30.0%和5.0%(P＜0.01),HBeAg血清学转换率分别为20.0%和5.0%(P＜0.05);在治疗24周时,两组HBV DNA低于检测值率分别为80%和70%,(P＞0.05),ALT复常率分别为77.5%和75.0%(P＞0.05),HBeAg阴转率分别为45.0%和32.5%(P＞0.05),HBeAg血清学转换率分别为27.5%和17.5%(P＞0.05),两组均未发现明显不良反应.结论 替比夫定与恩替卡韦治疗HBeAg阳性的慢性乙型肝炎的近期HBV DNA水平低于检测值率,ALT复常率无明显差异;12周时替比夫定HBeAg血清学转换率高于思替卡韦组,但24周时两组间差异无统计学意义.     

Comparison of the Antiviral Effects of Different Nucleos(t)ide Analogues in Chinese Patients with Chronic Hepatitis B: A Head-to-Head Study

Background/Aims:

To assess the antiviral efficacy of lamivudine (LAM), entecavir (ETV), telbivudine (LDT), and lamivudine and adefovir dipivoxil (CLA) combination in previously untreated hepatitis B patients at different time points during a 52-week treatment period.

Patients and Methods:

A total of 164 patients were included in this prospective, open-label, head-to-head study. Serum levels of alanine transaminase (ALT), hepatitis B virus (HBV) DNA, and hepatitis B e antigen (HBeAg) were measured at baseline, and at 12, 24, and 52 weeks of treatment.

Results:

Median reductions in serum HBV DNA levels at 52 weeks (log₁₀ copies/mL) were as follows: LAM, 3.98; ETV, 3.89; LDT, 4.11; and CLA, 3.36. The corresponding HBV DNA undetectability rates were 83%, 96%, 91%, and 89%, respectively. These two measures showed no significant intergroup differences. Clinical efficacy appeared related to HBV DNA level reduction after 24 weeks of therapy. Patients were divided into three groups based on HBV DNA levels at week 24: Undetectable (<10³ copies/mL), detectable but <10⁴ copies/mL, and >10⁴ copies/mL. Patients with levels below quantitation limit (QL) were analyzed at 52 weeks for HBV DNA undetectability rate (94%), ALT normalization rate (83%), and viral breakthrough rate (0%). The corresponding values in the QL-10⁴ copies/mL group were 50%, 75%, and 13%, whereas those in the above 10⁴ copies/mL group were 53%, 65%, and 18%. There were significant differences at week 52 for HBV DNA levels and viral breakthrough rate between the three groups.

Conclusions:

Different nucleos(t)ide (NUC) analogues tested exhibited no significant differences in effectiveness for Chinese NUC-naive HBV patients during 1-year treatment period.