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22.05.2019 | Nephrology - Original Paper | Ausgabe 7/2019

International Urology and Nephrology 7/2019

Association of serum IL-18 with protein-energy wasting in end-stage renal disease patients on haemodialysis

Zeitschrift:
International Urology and Nephrology > Ausgabe 7/2019
Autoren:
Xiao Bi, Mingzi Chu, Honglan Ai, Chun Hu, Wei Ding
Wichtige Hinweise
Chun Hu and Wei Ding contributed equally to this work.

Publisher's Note

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Abstract

Purpose

Protein-energy wasting (PEW) is highly prevalent in end-stage renal disease (ESRD) patients with inflammation who are on haemodialysis treatment. Interleukin-18 (IL-18) is an important pro-inflammatory cytokine that is significantly elevated in ESRD patients. However, the relationship between PEW and IL-18 is unclear. We therefore performed a cross-sectional study on 100 ESRD patients undergoing haemodialysis to clarify this.

Methods

PEW was defined according to the diagnostic criteria of the International Society of Renal Nutrition and Metabolism. Inflammation was assessed based on the serum levels of C-reactive protein (CRP), interleukin-6 (IL-6), tumour necrosis factor-α (TNF-α) and IL-18. We analysed the association between PEW and IL-18 by using logistic analysis and linear regression after adjustment for basic characteristics, comorbidities and laboratory findings.

Results

Among the 100 haemodialysis patients who were recruited, 56 had PEW. Even though there was no difference between the PEW group and non-PEW group with regard to disease causes, age, gender, cholesterol, ferritin, and haemoglobin, the levels of inflammation indicators such as CRP, IL-6, TNF-α and IL-1β were significantly higher in the PEW group. Moreover, IL-18 was found to contribute to PEW, but was negatively correlated with pre-albumin after adjustment for possible confounding factors.

Conclusions

Thus, the findings indicate that IL-18 is associated with PEW in ESRD patients on haemodialysis, which suggests that IL-18 may be involved in the pathogenesis of PEW in this setting.

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