相关,血UA水平随着慢性肾脏疾病的进展而升高,提示肾功能损害时尿酸排出降低,使血中UA浓度升高。由此可见部分CKD患者在进入维持性透析前期已存在较明显的高尿酸血症,而此组患者往往血压、血脂控制不理想,故应早期把握透析时机,可改善远期预后。(2)CKD患者血UA水平与收缩压、舒张压呈正相关,与TCh、TG、LDL-C浓度呈正相关,与HDL-C浓度呈负相关,这与文献报道一致[3,4,10]。高尿酸血症患者常较正常血尿酸者发生心血管疾病的危险因素更多,如偏高的血压、血脂、血糖等。一些危险因素本身就是导致血尿酸升高的原因,如长期的高血压使肾小球缺氧,乳酸生成增多,与尿酸竞争排泄。而高尿酸血症又可通过尿酸结晶直接沉积于小动脉壁而损害动脉内膜,加重高血压、冠心病。 本组CKD患者血UA水平与超声心动图、心电图的异常呈正相关。多元回归分析表明,心血管事件的发生除了与血UA浓度呈正相关外,还与CKD患者的血清肌酐、收缩压和年龄呈正相关(P<0.05),说明血UA水平升高是此类患者并发心脑血管事件的危险因素之一。高尿酸血症与心血管疾病相关,但目前尚不清楚这是一种因果关系还是附带现象,高尿酸血症常与心血管疾病的其他危险因子同时出现,二者互为因果,最终导致心血管并发症,二者联系的确切机制有待进一步研究。 【参考文献】 1 K/DOQI Workgroup.K/DOQI clinical practice guidelines for chronic kidney disease: evaluation,classification and stratification. Am J Kidney Dis,2002,45(4 Suppl 3):S1. 2 Brand FN, Mcgee DL, Kannel WB, et al. Hyperuricemia as a risk of coronary heart disease: the Framingham study. Am J Epidemiol,1985,121(1):11. 3 Freedman DS, Williamson DF, Gunter EW, et al. Relation of serum uric acid to mortality and ischemic heart disease. The NHANESI Epidemiologic followed up study.Am J Epidemiol,1995,141(7):637. 4 Bonora E, Targher G, Zenere MB, et al. Relationship of uric acid concentration to cardiovascular risk factors in young men.Role of obesity and central fat distribution.The verono young men atherosclerosis risk factors study.Int Jobes-Relat-Metab-Disord,1996,20(1):975. 5 Li Y,Stamler J,Xiao Z,et al.Serum uric acid and its correlates in Chinese adult populations,urban and rural of Beijing.The PRC-USA collaborative study in cardiovascular and cardiopulmonary epidemiology.Int J Epidemiol,1997,26(2):288. 6 朱轼,唐平,谢玲,等.成都地区心血管病高尿酸血症及相关因素—7288例人群分析.高血压杂志,2002,10(5):476. 7 Johnson RJ,Schreiner GF.The role of acquired tubuloterstial disease in the paphogenesis of salt dependent hypertension.Kidney Int,1997,52(5):1169. 8 Foley RN,Parfrey PS,Sarnak MJ.Clinical epidemiology of cardiovascular disease.Am J Kidney Dis,1998,32(5 Suppl 3):S112. 9 陈楠,俞海瑾.上海地区慢性肾功能衰竭患者心血管并发症的调查.中华肾脏病杂志,2001,17(2):91. 10 Tinahones FG,C-Sorigure FJ,Gonzalez-Ruiz A,et al.Lipoprotein profile in patients with isolated hyperuricema.An Med Interna,1996,13(10):483. 上一页 [1] [2]
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