Division of Nephrology, Department of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa.
National Kidney Foundation, Johannesburg, South Africa.
PLoS One. 2022 May 10;17(5):e0268183. doi: 10.1371/journal.pone.0268183. eCollection 2022.
Living kidney donation has been advocated as a means to ameliorate the chronic shortage of organs for transplantation. Significant rates of comorbidity and familial risk for kidney disease may limit this approach in the local context; there is currently limited data describing living donation in Africa.
We assessed reasons for non-donation and outcomes following donation in a cohort of 1208 ethnically diverse potential living donors evaluated over a 32-year period at a single transplant centre in South Africa.
Medical contraindications were the commonest reason for donor exclusion. Black donors were more frequently excluded (52.1% vs. 39.3%; p<0.001), particularly for medical contraindications (44% vs. 35%; p<0.001); 298 donors proceeded to donor nephrectomy (24.7%). Although no donor required kidney replacement therapy, an estimated glomerular filtration rate below 60 ml/min/1.73 m2 was recorded in 27% of donors at a median follow-up of 3.7 years, new onset albuminuria >300 mg/day was observed in 4%, and 12.8% developed new-onset hypertension. Black ethnicity was not associated with an increased risk of adverse post-donation outcomes.
This study highlights the difficulties of pursuing live donation in a population with significant medical comorbidity, but provides reassurance of the safety of the procedure in carefully selected donors in the developing world.
活体肾脏捐献被提倡作为改善器官移植短缺的一种手段。在当地环境下,合并症的高发病率和肾脏疾病的家族风险可能会限制这种方法的应用;目前关于非洲活体捐献的相关数据有限。
我们评估了南非一个移植中心 32 年来评估的 1208 名种族多样化的潜在活体捐献者中,因各种原因未捐献者的情况以及捐献后的结局。
医学禁忌是导致供体排除的最常见原因。黑人供体更频繁地被排除在外(52.1%比 39.3%;p<0.001),特别是因为医学禁忌(44%比 35%;p<0.001);298 名供体进行了供体肾切除术(24.7%)。尽管没有供体需要肾脏替代治疗,但在中位随访 3.7 年后,估计肾小球滤过率(eGFR)低于 60 ml/min/1.73 m2的比例为 27%,新出现的白蛋白尿>300 mg/天的比例为 4%,12.8%的人出现新发生的高血压。黑人种族与不良捐献后结局的风险增加无关。
本研究强调了在合并症发病率较高的人群中开展活体捐献的困难,但为在发展中国家精心挑选的供体中进行该手术的安全性提供了保证。