RemissionofProteinuriaImprovesPrognosisinIgANephropathy
蛋白尿的缓解可改善IgA肾病的预后
来源:JAmSocNephrol18:–,.doi:10./ASN.050526
ABSTRACT
ProteinuriahasbeenshowntobeanadverseprognosticfactorinIgAnephropathy.Thebenefitofachievingapartialremissionofproteinuria,however,hasnotbeenwelldescribed.
蛋白尿已被证实是IgA肾病的不利预后因素。然而,蛋白尿部分缓解而带来的获益还未被证实。
Westudiedpatientswithbiopsy-provenprimaryIgAnephropathyintheTorontoGlomerulonephritisRegistryandfoundthatglomerularfiltrationrate(GFR)declinedat-0.38±0.61ml/minper1.73m2/mooverall,with30%ofsubjectsreachingend-stagerenaldisease.Multivariateanalysisrevealedthatproteinuriaduringfollow-upwasthemostimportantpredictoroftherateofGFRdecline.Amongthepatientswith<1g/dofsustainedproteinuria,therateofdeclinewas90%slowerthanthemeanrate.Therateofdeclineincreasedwiththeamountofproteinuria,suchthatthosewithsustainedproteinuria3g/d(n=)lostrenalfunction25-foldfasterthanthosewith1g/d.Patientswhopresentedwith≥3g/dwhoachievedapartialremission(1g/d)hadasimilarcoursetopatientswhohad≤1g/dthroughout,andfaredfarbetterthanpatientswhoneverachievedremission.
我们在多伦多肾小球肾炎登记系统中研究了例肾活检诊断为IgA肾病的患者发现总体eGFR降低-0.38±0.61ml/min,其中30%的患者到达ESRD。多因素分析显示随访过程中尿蛋白是引起eGFR降低的最重要因素。在例尿蛋白1g/d的患者中,eGFR下降率比平均低了90%。大量蛋白尿的患者eGFR下降率较高,比如例尿蛋白3g/d的患者比尿蛋白1g/d的患者肾功能下降速度增高了25倍。初始蛋白尿≥3g/d的患者,如以后达到部分缓解(尿蛋白1g/d),则与尿蛋白持续≤1g/d的患者病程相似,并且远比那些没有缓解的患者好得多。
TheseresultsunderscoretherelationshipbetweenproteinuriaandprognosisinIgAnephropathyandestablishtheimportanceofremission.
这些结果强调了蛋白尿与IgA肾病预后的关联,也说明了蛋白尿缓解的重要性。
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