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JACC:尿透明质酸或能更早预测心脏手术相关急性肾损伤

2014-08-21 iang 丁香园

心脏手术相关急性肾损伤(CSA-AKIA)是体外循环下行心脏手术患者的一个常见且复杂的临床问题,也是心脏手术后伤残和死亡的重要预测因子。 根据血清肌酐水平和/或尿量改变等现行共识标准,CSA-AKI只有在术后24-48小时才能被诊断。尽管CSA-AKI治疗措施有限,但尽早预防进一步损害和及时预测对改善预后至关重要。 虽然研究不断发现新的生物标志物(如尿白介素-18,尿NGAL或尿K

心脏手术相关急性肾损伤(CSA-AKIA)是体外循环下行心脏手术患者的一个常见且复杂的临床问题,也是心脏手术后伤残和死亡的重要预测因子

根据血清肌酐水平和/或尿量改变等现行共识标准,CSA-AKI只有在术后24-48小时才能被诊断。尽管CSA-AKI治疗措施有限,但尽早预防进一步损害和及时预测对改善预后至关重要。

虽然研究不断发现新的生物标志物(如尿白介素-18,尿NGAL或尿KIM-1),但这些标志物对于预测CSA-AKI而言并非最佳。透明质酸(HA)是包括肾脏在内的许多器官细胞外基质的重要结构组成成分,其介导的细胞和器官功能亦是非常广泛,因此,HA成为AKI领域的研究热点。

我们的研究旨在探索尿HA(uHA)浓度与当前采用的临床指标相比,是否能更早地预测CSA-AKI。为此,我们纳入55名高危CSA-AKI患者(Cleveland Clinic评分≥6,该评分由患者特征、合并症、手术类型等13中术前危险因素组成)。研究主要终点为发生CSA-AKI(采用KDIGO标准)。

研究结果表明26名患者发生AKI。未发生CSA-AKI的患者术后uHA浓度无显著上升,相反,发生CSA-AKI的患者uHA浓度显著上升,并且在术后4开始上升,持续是术后24小时。根据血肌酐标准化uHA后,趋势仍保持不变。

肾透明质酸在糖尿病和肾结石等慢性疾病中表达增加,也可能导致慢性肾功能不全,另外,糖尿病和术前肾功能不全均增加CSA-AKI风险。我们的研究人群中uHA基线浓度并未在糖尿病或术前肾功能不全患者中升高,说明uHA可作为AKI标志物,但AKI中uHA浓度上升原因尚不明确。

为了检测uHA能否预测CSA-AKI,我们计算了ROC曲线下面积,体外循环4小时、12小时和24小时后uHA曲线下面积分别为0.89、0.94和0.89。uHA曲线下面积明显大于血肌酐和尿量,表明uHA预测诊断能力更强。术后12小时uHA浓度>400 ng/ml的患者发生CSA-AKI的风险是浓度<400 ng/ml的6.8倍。

将糖尿病、射血分数、体外循环以及慢性肾脏病等7个临床特征作为协变量进行Cox风险比例回归分析时,uHA仍与AKI关系密切。

据我们所知,该研究为首个描述uHA作为CSA-AKI早期生物标志物的研究。我们的研究发现在发生CSA-AKI的患者中,uHA浓度在建立体外循环后4小时开始升高,而uHA在未发生AKI患者中保持不变。曲线下面积>0.9也意味着uHA预测价值高于其它标志物。另外,我们的研究还发现uHA不受患者异质性合并症的影响。

我们的研究也存在一定的局限,最重要的是,我们的研究仅纳入了少量CSA-AKI高危患者,需要大型多中心研究来证实我们的研究结论。

总而言之,我们的初步研究表明尿透明质酸或可成为早期预测CSA-AKI强有利的生物标志物。  

原始出处:

Zarbock A, Meersch M, Van Aken H, Görlich D, Singbartl K.Urinary hyaluronic Acid as an early predictor of acute kidney injury after cardiac surgery.J Am Coll Cardiol. 2014 Aug 19;64(7):737-8. doi: 10.1016/j.jacc.2014.05.034.

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    2015-08-04 sundong

    不错的研究

    0

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    2014-12-05 hbwxf
  3. [GetPortalCommentsPageByObjectIdResponse(id=34322, encodeId=6ed334322b8, content=不错的研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=186, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3ykRSkuxjt93yc9tvDWfIQItrwiaKSCps5kyrTyDlwic2FgoCWe88wR3ZiaggKYGueDIp26zVgnbzriaQ/0, createdBy=89d71602869, createdName=sundong, createdTime=Tue Aug 04 08:22:00 CST 2015, time=2015-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1853286, encodeId=f649185328678, content=<a href='/topic/show?id=48351020537' target=_blank style='color:#2F92EE;'>#JACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10205, encryptionId=48351020537, topicName=JACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=55ce62, createdName=hbwxf, createdTime=Fri Dec 05 04:26:00 CST 2014, time=2014-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20304, encodeId=956920304f5, content=AKI对心衰临床治疗意义重大,但依然需要研究检验其适用性, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150920/IMG55FDE671A89482379.jpg, createdBy=cef3108336, createdName=x35042875, createdTime=Sat Apr 11 22:31:00 CST 2015, time=2015-04-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1276702, encodeId=42c512e670282, content=<a href='/topic/show?id=ec9e9482383' target=_blank style='color:#2F92EE;'>#透明质酸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94823, encryptionId=ec9e9482383, topicName=透明质酸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c77e138, createdName=kalseyzl, createdTime=Sat Aug 23 05:26:00 CST 2014, time=2014-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1324948, encodeId=ed171324948e4, content=<a href='/topic/show?id=96c71804b7' target=_blank style='color:#2F92EE;'>#ACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1804, encryptionId=96c71804b7, topicName=ACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1e452500029, createdName=12498568m50暂无昵称, createdTime=Sat Aug 23 05:26:00 CST 2014, time=2014-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1396863, encodeId=238813968633b, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4dfa37, createdName=智者为医08, createdTime=Sat Aug 23 05:26:00 CST 2014, time=2014-08-23, status=1, ipAttribution=)]
    2015-04-11 x35042875

    AKI对心衰临床治疗意义重大,但依然需要研究检验其适用性

    0

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