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Myeloperoxidase and the Risk of CKD Progression, Cardiovascular Disease, and Death in the Chronic Renal Insufficiency Cohort (CRIC) Study.
American Journal of Kidney Diseases ( IF 13.2 ) Pub Date : 2019-12-19 , DOI: 10.1053/j.ajkd.2019.09.006
Simon Correa 1 , Jessy Korina Pena-Esparragoza 2 , Katherine M Scovner 1 , Sushrut S Waikar 3 , Finnian R Mc Causland 1
Affiliation  

Background

Myeloperoxidase (MPO) catalyzes the formation of reactive nitrogen species and levels are elevated in patients with chronic kidney disease (CKD). Although increased oxidative stress and inflammation are associated with progression of CKD and cardiovascular disease (CVD), relationships between MPO concentration, CKD progression, CVD, and death remain unclear.

Study Design

Prospective cohort.

Setting & Participants

3,872 participants from the Chronic Renal Insufficiency Cohort (CRIC) who had MPO measured at baseline.

Exposure

Baseline MPO concentration.

Outcomes

CKD progression (kidney transplantation, dialysis initiation, or 50% decline in baseline estimated glomerular filtration rate [eGFR] and eGFR ≤ 15 mL/min/1.73 m2), CVD (heart failure, myocardial infarction, or stroke), and death.

Analytical Approach

Cox proportional hazards models.

Results

In adjusted analyses, higher MPO level (per 1-SD increase in log-transformed MPO) was associated with 10% higher risk for CKD progression (adjusted HR, 1.10; 95% CI, 1.01-1.19; P = 0.03), 12% higher risk for CVD (adjusted HR, 1.12; 95% CI, 1.03-1.22; P < 0.01), and 13% increased risk for death (adjusted HR, 1.13; 95% CI, 1.04-1.22; P < 0.01). There was evidence for effect modification of the association of MPO level with CKD progression by baseline eGFR (P interaction = 0.02), but not for CVD (P interaction = 0.2) or death (P interaction = 0.1). In stratified analyses, MPO level (per 1-SD increase in log-transformed MPO) was associated with greater risk for CKD progression among participants with eGFR > 45 mL/min/1.73 m2 (adjusted HR, 1.23; 95% CI, 1.03-1.46; P = 0.02) compared with those with eGFR ≤ 45 mL/min/1.73 m2 (adjusted HR, 1.10; 95% CI, 1.02-1.20; P = 0.02). The association of MPO level with CVD and death was no longer significant after adjustment for cardiac biomarkers.

Limitations

Potential residual confounding, lack of repeated measurements of MPO.

Conclusions

Higher MPO level was associated with increased risk for CKD progression, but not with CVD and death in patients with CKD from CRIC. Whether therapies aimed at reducing MPO activity can result in improved clinical outcomes is yet to be determined.



中文翻译:

慢性肾功能不全队列 (CRIC) 研究中的髓过氧化物酶与 CKD 进展、心血管疾病和死亡的风险。

背景

髓过氧化物酶 (MPO) 催化活性氮物质的形成,慢性肾病 (CKD) 患者的水平升高。尽管氧化应激和炎症增加与 CKD 和心血管疾病 (CVD) 的进展有关,但 MPO 浓度、CKD 进展、CVD 和死亡之间的关系仍不清楚。

学习规划

前瞻性队列。

设置与参与者

来自慢性肾功能不全队列 (CRIC) 的 3,872 名参与者在基线时测量了 MPO。

接触

基线 MPO 浓度。

结果

CKD 进展(肾移植、开始透析或基线估计肾小球滤过率 [eGFR] 下降 50% 和 eGFR ≤ 15 mL/min/1.73 m 2)、CVD(心力衰竭、心肌梗死或中风)和死亡。

分析方法

Cox 比例风险模型。

结果

在调整后的分析中,较高的 MPO 水平(对数转换的 MPO 每增加 1-SD)与 CKD 进展风险增加 10% 相关(调整后的 HR,1.10;95% CI,1.01-1.19;P  = 0.03),12% CVD 风险增加(调整后的 HR,1.12;95% CI,1.03-1.22;P  < 0.01),死亡风险增加 13%(调整后的 HR,1.13;95% CI,1.04-1.22;P  < 0.01)。有证据表明基线 eGFR(P交互作用 = 0.02)对 MPO 水平与 CKD 进展的关联有影响,但对 CVD(P交互作用 = 0.2)或死亡(P交互作用 = 0.1)。在分层分析中,在 eGFR > 45 mL/min/1.73 m 2的参与者中,MPO 水平(对数转换的 MPO 每增加 1-SD)与 CKD 进展风险增加相关(调整后 HR,1.23;95% CI,1.03 -1.46;P  = 0.02)与 eGFR ≤ 45 mL/min/1.73 m 2的患者相比(调整后的 HR,1.10;95% CI,1.02-1.20;P  = 0.02)。在调整心脏生物标志物后,MPO 水平与 CVD 和死亡的关联不再显着。

限制

潜在的残余混杂,缺乏 MPO 的重复测量。

结论

较高的 MPO 水平与 CKD 进展风险增加相关,但与 CRIC 导致的 CKD 患者的 CVD 和死亡无关。旨在降低 MPO 活性的疗法是否可以改善临床结果尚待确定。

更新日期:2019-12-19
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