Association Between Iron Metabolism and Acute Kidney Injury in Critically Ill Patients With Diabetes

Overview

Journal Front Endocrinol (Lausanne)

Specialty Endocrinology

Date 2022 May 16

PMID 35574018

Authors

Manqiu Mo

Yunqing Gao

Ling Deng

Yuzhen Liang

Ning Xia

Ling Pan

Affiliations

Soon will be listed here.

Abstract

Objective: Iron overload plays an important role in the pathogenesis of diabetes and acute kidney injury (AKI). The aim of this present study was to explore the relationship between iron metabolism and AKI in patients with diabetes.

Methods: The clinical data of diabetes patients from MIMIC-III database in intensive care unit (ICU) were retrospectively analyzed. Regression analyses were used to explore the risk factors of AKI and all-cause death in critical patients with diabetes. Area under the receiver operating characteristic curves (AUROCs) were used to analyze serum ferritin (SF), and regression model to predict AKI in critical patients with diabetes. All diabetes patients were followed up for survival at 6 months, and Kaplan-Meier curves were used to compare the survival rate in patients with different SF levels.

Results: A total of 4,997 diabetic patients in ICU were enrolled, with a male-to-female ratio of 1.37:1 and a mean age of 66.87 ± 12.74 years. There were 1,637 patients in the AKI group (32.8%) and 3,360 patients in the non-AKI group. Multivariate logistic regression showed that congestive heart failure (OR = 2.111, 95% CI = 1.320-3.376), serum creatinine (OR = 1.342, 95% CI = 1.192-1.512), Oxford Acute Severity of Illness Score (OR = 1.075, 95% CI = 1.045-1.106), increased SF (OR = 1.002, 95% CI = 1.001-1.003), and decreased transferrin (OR = 0.993, 95% CI = 0.989-0.998) were independent risk factors for AKI in critical patients with diabetes. Multivariate Cox regression showed that advanced age (OR = 1.031, 95% CI = 1.025-1.037), AKI (OR = 1.197, 95% CI = 1.011-1.417), increased Sequential Organ Failure Assessment score (OR = 1.055, 95% CI = 1.032-1.078), and increased SF (OR = 1.380, 95% CI = 1.038-1.835) were independent risk factors for 6-month all-cause death in critical diabetic patients. The AUROCs of SF and the regression model to predict AKI in critical patients with diabetes were 0.782 and 0.851, respectively. The Kaplan-Meier curve showed that the 6-month survival rate in SF-increased group was lower than that in SF-normal group (log-rank = 16.989, < 0.001).

Conclusion: Critically ill diabetic patients with AKI were easily complicated with abnormal iron metabolism. Increase of SF is an important risk factor for AKI and all-cause death in critically ill patients with diabetes.

Citing Articles

Association of serum ferritin and all-cause mortality in AKI patients: a retrospective cohort study.

Ren X, Jiang Z, Liu F, Wang Q, Chen H, Yu L Front Med (Lausanne). 2024; 11:1368719.

PMID: 38938379 PMC: 11208335. DOI: 10.3389/fmed.2024.1368719.

Iron Chelation as a Potential Therapeutic Approach in Acute Lung Injury.

Zhang X, Zhou J, Holbein B, Lehmann C Life (Basel). 2023; 13(8).

PMID: 37629516 PMC: 10455621. DOI: 10.3390/life13081659.

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