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Renal function is a major predictor of circulating acyl-CoA-binding protein/diazepam-binding inhibitor.
Front. Endocrin. 14:1152444 (2023)
OBJECTIVE: Acyl-CoA-binding protein (ACBP)/diazepam-binding inhibitor has lately been described as an endocrine factor affecting food intake and lipid metabolism. ACBP is dysregulated in catabolic/malnutrition states like sepsis or systemic inflammation. However, regulation of ACBP has not been investigated in conditions with impaired kidney function, so far. DESIGN/METHODS: Serum ACBP concentrations were investigated by enzyme-linked immunosorbent assay i) in a cohort of 60 individuals with kidney failure (KF) on chronic haemodialysis and compared to 60 individuals with a preserved kidney function; and ii) in a human model of acute kidney dysfunction (AKD). In addition, mACBP mRNA expression was assessed in two CKD mouse models and in two distinct groups of non-CKD mice. Further, mRNA expression of mACBP was measured in vitro in isolated, differentiated mouse adipocytes - brown and white - after exposure to the uremic agent indoxyl sulfate. RESULTS: Median [interquartile range] serum ACBP was almost 20-fold increased in KF (514.0 [339.3] µg/l) compared to subjects without KF (26.1 [39.1] µg/l) (p<0.001). eGFR was the most important, inverse predictor of circulating ACBP in multivariate analysis (standardized β=-0.839; p<0.001). Furthermore, AKD increased ACBP concentrations almost 3-fold (p<0.001). Increased ACBP levels were not caused by augmented mACBP mRNA expression in different tissues of CKD mice in vivo or in indoxyl sulfate-treated adipocytes in vitro. CONCLUSIONS: Circulating ACBP inversely associates with renal function, most likely through renal retention of the cytokine. Future studies need to investigate ACBP physiology in malnutrition-related disease states, such as CKD, and to adjust for markers of renal function.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Acyl-coa-binding Protein ; Adipokines ; Chronic Kidney Disease ; Diabetic Kidney Disease ; Diazepam Binding Inhibitor ; Hemodialysis ; Type 2 Diabetes Mellitus; Kidney-disease; Interleukin-6; Progranulin; Expression; Glucose; Protein
ISSN (print) / ISBN
1664-2392
e-ISSN
1664-2392
Zeitschrift
Frontiers in Endocrinology
Quellenangaben
Band: 14,
Artikelnummer: 1152444
Verlag
Frontiers
Verlagsort
Lausanne
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Institut(e)
Helmholtz Institute for Metabolism, Obesity and Vascular Research (HI-MAG)