Omentin-1 Levels and Outcomes in Incident Peritoneal Dialysis Patients.

Rationale & Objective: Omentin-1 is an adipokine with anti-inflammatory and cardioprotective properties. The objective of this study was to determine the prognostic role of plasma omentin-1 levels in incident peritoneal dialysis (PD) patients.
Study Design: Retrospective analysis of prospective cohort.
Setting & Participants: 152 incident PD patients.
Predictors: Plasma omentin-1 level, adipose tissue omentin-1 messenger RNA (mRNA) expression.
Outcomes: Patient survival, technique survival, hospital admission, and duration of stay.
Analytical Approach: Time-to-event survival analyses; linear regression for hospitalization.
Results: The mean age was 58.4 ± 11.7 years; 102 were men, and 92 had diabetes. There was no significant correlation between plasma omentin-1 level and its adipose tissue mRNA expression. A higher plasma omentin-1 level quartile was not associated with patient survival ( P  = 0.92) or technique survival ( P  = 0.83) but had a modest correlation with a lower number of hospital admissions ( P  = 0.07) and shorter duration of hospital stay ( P  = 0.04). In adjusted models using multivariable linear regression, a higher plasma omentin-1 level quartile remained significantly associated with fewer hospital admissions (β, -0.13; 95% CI, -0.26 to -0.002; P  = 0.05) and shorter hospitalization duration (β, -0.20; 95% CI, -0.38 to -0.02; P  = 0.03).
Limitations: Observational study with baseline measures only.
Conclusions: Plasma omentin-1 level was not associated with patient survival, technique survival, or peritonitis, but higher plasma omentin-1 levels were associated with fewer hospital admissions and shorter duration of hospitalization among incident PD patients.
(© 2023 The Authors.)