血清25⁃羟基维生素D3水平与腹膜透析相关性腹膜炎的关联性分析

目的探讨血清25⁃羟基维生素D3[25⁃hydroxyvitamin D3,25(OH)D3]水平与腹膜透析(peritoneal dialysis,PD)相关性腹膜炎的关系,为防治腹膜炎提供新思路。方法本研究为单中心回顾性队列研究,选取2014年1月1日至2018年9月30日在中山大学附属第一医院PD中心进行规律PD且年龄≥18周岁、透析时间≥3个月的患者,排除有血液透析史、肾移植史、恶性肿瘤及全身感染性疾病的患者。收集入选患者的人口学资料和实验室检验数据。所有患者均随访至死亡、转为血液透析、肾移植、转至其他中心或随访终止日期(2018年12月31日)。根据PD患者的基线血清25(OH)D3水平三分位法分为低水平组[25(OH)D3≤12μg/L]、中水平组[12μg/L<25(OH)D3≤17μg/L]和高水平组[25(OH)D3>17μg/L]。应用多因素调整的Poisson回归模型分析血清25(OH)D3水平与腹膜炎发生的相关性。结果共有642例患者入选本研究,其中男性341例(53.12%),年龄为(47.58±14.10)岁,血清25(OH)D3为(13.83±6.41)μg/L,原发病以慢性肾小球肾炎为首(67.19%)。在中位42(19,59)个月的随访期内,有139例患者发生了共232次腹膜炎。校正了性别、年龄、白蛋白、体重指数(BMI)、钙磷乘积、全段甲状旁腺素(iPTH)、糖尿病史、Charlson指数以及药物使用,多因素Poisson回归分析结果显示,血清25(OH)D3中水平组和低水平组腹膜炎发生的危险性分别为高水平组的92%(95%CI 0.62~1.38,P=0.690)和1.74倍(95%CI 1.19~2.54,P=0.004),低水平组与高水平组之间的差异具有统计学意义。结论血清25(OH)D3水平与腹膜炎发生密切相关,低水平25(OH)D3是PD患者腹膜炎发生的独立危险因素。

Correlation between serum 25 - hydroxyvitamin D3 level and peritoneal dialysis associated peritonitis

Objective To explore the correlation between serum 25-hydroxyvitamin D3 [25(OH)D3] level and peritoneal dialysis (PD) associated peritonitis, and provide a new idea for the prevention and treatment of peritonitis. Methods In this single-center retrospective cohort study, patients who were≥18 years old and were treated with regular PD≥3 months in PD center from January 1, 2014 to September 30, 2018 were recruited, except those who had a history of malignant tumors or systemic infectious diseases, transferred from permanent hemodialysis (HD) or failed kidney transplantation. Baseline data including demographic characteristics as well as clinical and biochemical data were collected. All the patients were followed up until death, transfer to HD, kidney transplantation, transfer to other centers or the end of our study (December 31, 2018), and were divided into low tertile [serum 25(OH)D3 ≤12μg/L], middle tertile[12 μg/L＜serum 25(OH)D3≤17 μg/L] and high tertile[serum 25(OH)D3 >17 μg/L] according to the baseline serum 25(OH)D3 level. Multivariate adjusted Poisson model was used to evaluate the association between serum 25(OH)D3 level and PD related peritonitis. Results A total of 642 patients were enrolled in our study, of whom 341 were male (53.12%) , and the age was (47.58±14.10) years old. The serum 25(OH)D3 level was (13.83±6.41) μg/L. As for the primary disease, 67.19% were chronic glomerulonephritis. During a median 42(19, 59) months follow - up period, 232 peritonitis occurred in 139 patients. After adjusting for confounders, including gender, age, albumin, body mass index(BMI), calcium-phosphorus product, intact parathyroid hormone (iPTH), diabetes, charlson index and drug use, multivariate Poisson regression analysis showed that the risk of peritonitis in the middle tertile and the low tertile was 92% (95% CI 0.62-1.38, P= 0.690) and 1.74 times (95%CI 1.19-2.54, P=0.004) of the high tertile respectively. The difference between the low tertile and the high tertile was statistically significant. Conclusions The level of serum 25(OH)D3 is closely related to the occurrence of PD associated peritonitis. Low level serum 25 (OH)D3 is an independent risk factor for peritonitis in PD patients.