JCO:他汀类药物可降低丙肝人群的肝细胞癌发病风险

2013-03-22 SHUMUFENG 丁香园

他汀或有抗肿瘤作用,然而,迄今为止还没有研究着眼于他汀对慢性丙肝病毒 (HCV) 感染者人群的作用。国立台湾大学Yu-Tse Tsan博士等人的这一研究旨在探索他汀使用与HCV感染者人群的肝细胞癌 (HCC) 风险之间的关系。他们发现HCV感染者使用他汀可减少HCC风险。需要进一步的研究以明确这一效应的机制。论文发表于国际权威杂志JCO 2013年最新一期在线版上。 这一基于人群的队列研究对台湾

他汀或有抗肿瘤作用,然而,迄今为止还没有研究着眼于他汀对慢性丙肝病毒 (HCV) 感染者人群的作用。国立台湾大学Yu-Tse Tsan博士等人的这一研究旨在探索他汀使用与HCV感染者人群的肝细胞癌 (HCC) 风险之间的关系。他们发现HCV感染者使用他汀可减少HCC风险。需要进一步的研究以明确这一效应的机制。论文发表于国际权威杂志JCO 2013年最新一期在线版上。
这一基于人群的队列研究对台湾国民健康保险研究资料库1999年1月1日之后纳入的 260,864 HCV感染者进行分析,随访观察至2010年12月31日。研究使用Cox 比例风险回归模型分析药物的时间依赖性暴露,以评估他汀应用与HCC风险之间的关联。
结果显示,本研究共随访 2,792,016.6 人年,发现HCV感染者队列中发生27,883 例HCC。对于使用他汀的 35,023 例患者(定义为 ≥ 28 累积限定日剂量[cDDDs])中出现1378例HCC。未使用他汀的 225,841 例患者 (< 28 cDDDs)中有 26,505 诊断为肝细胞癌。研究者观察到他汀使用与HCC风险之间具有剂量依赖性关联。与不使用他汀的感染者相比,他汀服用剂量为 28至89, 90 至 180,以及> 180 cDDDs 每年的患者发生HCC的校正后风险比分别为0.66 (95% CI, 0.59 to 0.74), 0.47 (95% CI,0.40 to 0.56),和 0.33 (95% CI, 0.25 to 0.42)。研究发现,他汀使用 ≥ 28 cDDDs 每年的患者与未使用他汀者相比,前者HCC风险的减少效应证明使用时间越长,获益越大。
研究人员由此得出结论,HCV感染者使用他汀可减少HCC风险。需要进一步的研究明确这一效应的机制。

Purpose 
Statins may have protective effects against cancer, but no studies have focused on their effects in patients with chronic hepatitis C virus (HCV) infection. The purpose of this study was to investigate the association between use of statins and risk of hepatocellular carcinoma (HCC) in HCV-infected patients.
Patients and Methods 
Ours was a population-based cohort study of 260,864 HCV-infected patients enrolled in the Taiwan National Health Insurance Research Database since January 1, 1999, and observed through December 31, 2010. Cox proportional hazards regression with time-dependent covariates for drug exposures was employed to evaluate the association between statin use and HCC risk.
Results 
There were 27,883 cases of HCC in the HCV cohort during a follow-up period of 2,792,016.6 person-years. Among the 35,023 patients using statins (defined as ≥ 28 cumulative defined daily doses [cDDDs]), 1,378 had HCC. Among the 225,841 patients not using statins (< 28 cDDDs), 26,505 were diagnosed with HCC. A dose-response relationship between statin use and HCC risk was observed. The adjusted hazard ratios were 0.66 (95% CI, 0.59 to 0.74), 0.47 (95% CI, 0.40 to 0.56), and 0.33 (95% CI, 0.25 to 0.42) for patients with 28 to 89, 90 to 180, and > 180 cDDDs per year, respectively, relative to nonusers. The reduction in risk also demonstrated a progressive duration-response relationship in patients with ≥ 28 cDDDs per year when compared with nonusers.
Conclusion 
Among patients with HCV infection, statin use was associated with reduced risk of HCC. Further research is needed to elucidate the mechanism responsible for this effect.

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    2014-02-01 lidong40
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    2013-03-25 xjy02
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    2013-04-04 匿名用户

    可能机制是什么?

    0

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