DDW 2013:NAFLD患者死亡危险因素仍然不明

2013-05-30 DDW EGMN

      在2013消化疾病周(DDW)上公布的一项研究显示,非酒精性脂肪性肝病(NAFLD)患者的死亡因素包括老年、男性、躯干性肥胖和高密度脂蛋白胆固醇(HDL-C)水平低,换言之,与心血管疾病死亡和其他原因死亡的危险因素相同。另一方面,NAFLD患者的丙氨酸转氨酶(ALT)水平升高与死亡或其他不良结局风险增加无关,这意味着研究者需更

      在2013消化疾病周(DDW)上公布的一项研究显示,非酒精性脂肪性肝病(NAFLD)患者的死亡因素包括老年、男性、躯干性肥胖和高密度脂蛋白胆固醇(HDL-C)水平低,换言之,与心血管疾病死亡和其他原因死亡的危险因素相同。另一方面,NAFLD患者的丙氨酸转氨酶(ALT)水平升高与死亡或其他不良结局风险增加无关,这意味着研究者需更深入地对现有数据进行挖掘,以寻找NAFLD独有的危险预测因素。


Naga P. Chalasani博士

       在这项研究中,印第安纳大学的Naga P. Chalasani博士及其同事从第三次全美健康与营养调查(NHANES Ⅲ)中收集了1988~1994年间14,797例20~74岁成人的基线及随访胆囊超声和肝脏影像学数据。研究者将这些数据与全国死亡指数进行关联,以确定NAFLD患者(相对于对照者)早期死亡的危险因素。

       研究者将NAFLD定义为:超声检查显示存在中至重度肝脂肪变性,并且无铁过载、乙肝或丙肝病毒感染和过量饮酒。对照者为同一数据集中无基础性肝病且超声检查正常和肝功能检查正常的参与者。

       该研究共纳入2,441例NAFLD患者和8,423名对照者。在中位随访14.3年期间,14%(1,193例)的对照者和21%(501例)的NAFLD患者死亡,该差异在单因素分析中具有显著性(P=0.0328)。研究者对总体死亡、癌症相关死亡和心血管死亡进行分析发现,这3个类别的独立死亡预测因素均为男性、老年和HDL-C水平低,不过心血管死亡的额外危险因素还包括代谢综合征。

Keith Lindor博士

        Chalasani博士表示,在确定NAFLD患者危险因素的工作中,第一步是识别具有不良结局风险的NAFLD患者。会议主持人Keith D. Lindor对此表示认同,指出目前尚难以轻易定义NAFLD,惯常使用的ALT指标或许也并不能透露太多信息,并且由于脂肪变性需达到一定程度才可被超声检出,因此目前对于超声能在多大程度上有效检测NAFLD尚存有疑问。目前尚不知道活检发现但超声检查未发现脂肪变性的患者是否与肉眼检查发现脂肪变性的患者具有相似的危险因素。

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    2014-05-08 lvygwyt2781
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    2013-06-01 aids214
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