Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
AIDS. 2012 Jan 28;26(3):295-302. doi: 10.1097/QAD.0b013e32834f33a2.
Proteinuria occurs commonly among HIV-infected and uninfected injection drug users (IDUs) and is associated with increased mortality risk. Vitamin D deficiency, highly prevalent among IDUs and potentially modifiable, may contribute to proteinuria. To determine whether vitamin D is associated with proteinuria in this population, we conducted a cross-sectional study in the AIDS Linked to the IntraVenous Experience (ALIVE) Study.
25(OH)-vitamin D levels were measured in 268 HIV-infected and 614 HIV-uninfected participants. The association between vitamin D deficiency (<10 ng/ml) and urinary protein excretion was evaluated by linear regression. The odds of persistent proteinuria (urine protein-to-creatinine ratio >200 mg/g on two occasions) associated with vitamin D deficiency was examined using logistic regression.
One-third of participants were vitamin D-deficient. Vitamin D deficiency was independently associated with higher urinary protein excretion (P < 0.05) among HIV-infected and diabetic IDUs (P-interaction < 0.05 for all). Persistent proteinuria occurred in 18% of participants. Vitamin D deficiency was associated with greater than six-fold odds of persistent proteinuria among diabetic IDUs [odds ratio (OR) 6.29, 95% confidence interval (CI) 1.54, 25.69] independent of sociodemographic characteristics, comorbid conditions, body mass index, and impaired kidney function [estimated glomerular filtration rate (eGFR) <60 ml/min per 1.73 m(2)]; no association, however, was observed among nondiabetic IDUs (OR 1.06, 95% CI 0.64, 1.76) (P-interaction <0.05).
Vitamin D deficiency was associated with higher urinary protein excretion among those with HIV infection and diabetes. Vitamin D deficiency was independently associated with persistent proteinuria among diabetic IDUs, although not in nondiabetic persons. Whether vitamin D repletion ameliorates proteinuria in these patients requires further study.
在感染 HIV 和未感染 HIV 的注射吸毒者(IDU)中,蛋白尿很常见,并且与死亡率风险增加有关。维生素 D 缺乏症在 IDU 中非常普遍,而且可能是可以改变的,可能导致蛋白尿。为了确定维生素 D 是否与该人群的蛋白尿有关,我们在 AIDS Linked to the IntraVenous Experience(ALIVE)研究中进行了一项横断面研究。
在 268 名 HIV 感染和 614 名 HIV 未感染的参与者中测量了 25(OH)-维生素 D 水平。通过线性回归评估维生素 D 缺乏症(<10 ng/ml)与尿蛋白排泄之间的关系。使用逻辑回归检查与维生素 D 缺乏相关的持续性蛋白尿(两次尿液蛋白与肌酐比值>200 mg/g)的几率。
三分之一的参与者维生素 D 缺乏。维生素 D 缺乏与 HIV 感染和糖尿病 IDU 的尿蛋白排泄增加独立相关(所有 P 交互<0.05)。18%的参与者发生持续性蛋白尿。在糖尿病 IDU 中,维生素 D 缺乏与持续性蛋白尿的几率增加了六倍以上相关[比值比(OR)6.29,95%置信区间(CI)1.54,25.69],独立于社会人口统计学特征、合并症、体重指数和受损的肾功能[估计肾小球滤过率(eGFR)<60 ml/min per 1.73 m2];然而,在非糖尿病 IDU 中未观察到相关性(OR 1.06,95%CI 0.64,1.76)(P 交互<0.05)。
在 HIV 感染和糖尿病患者中,维生素 D 缺乏与尿蛋白排泄增加有关。维生素 D 缺乏与糖尿病 IDU 的持续性蛋白尿独立相关,但在非糖尿病患者中则不相关。在这些患者中,维生素 D 补充是否能改善蛋白尿需要进一步研究。