Identification of circulating apolipoprotein M as a new determinant of insulin sensitivity and relationship with adiponectin

The adiponectin is one of the rare adipokines down-regulated with obesity and protects against obesity-related disorders. Similarly, the apolipoprotein M (apoM) is expressed in adipocytes and its expression in adipose tissue is associated with metabolic health. We compared circulating apoM with adip...

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Bibliographic Details
Published in:International Journal of Obesity 2024-07, Vol.48 (7), p.973-980
Main Authors: Frances, Laurie, Croyal, Mikaël, Ruidavets, Jean-Bernard, Maraninchi, Marie, Combes, Guillaume, Raffin, Jérémy, de Souto Barreto, Philippe, Ferrières, Jean, Blaak, Ellen E, Perret, Bertrand, Moro, Cédric, Valéro, René, Martinez, Laurent O, Viguerie, Nathalie
Format: Article
Language:English
Subjects:
Adipocytes
Adiponectin
Adipose tissue
Apolipoproteins
Biomarkers
Body fat
Circulation
Correlation
Diabetes mellitus (non-insulin dependent)
Dyslipidemia
Gene expression
High density lipoprotein
Inflammation
Insulin
Insulin resistance
Life Sciences
Low density lipoprotein
Metabolism
Multiple regression analysis
Multiple regression models
Obesity
Parameter sensitivity
Regression analysis
Surgery
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Summary:The adiponectin is one of the rare adipokines down-regulated with obesity and protects against obesity-related disorders. Similarly, the apolipoprotein M (apoM) is expressed in adipocytes and its expression in adipose tissue is associated with metabolic health. We compared circulating apoM with adiponectin regarding their relationship with metabolic parameters and insulin sensitivity and examined their gene expression patterns in adipocytes and in the adipose tissue. Circulating apoM and adiponectin were examined in 169 men with overweight in a cross-sectional study, and 13 patients with obesity during a surgery-induced slimming program. Correlations with clinical parameters including the insulin resistance index (HOMA-IR) were analyzed. Multiple regression analyses were performed on HOMA-IR. The APOM and ADIPOQ gene expression were measured in the adipose tissue from 267 individuals with obesity and a human adipocyte cell line. Participants with type 2 diabetes had lower circulating adiponectin and apoM, while apoM was higher in individuals with dyslipidemia. Similar to adiponectin, apoM showed negative associations with HOMA-IR and hs-CRP (r  0.3). Unlike adiponectin, apoM was positively associated with LDL markers (LDL-C and apoB100, r  0.81). In adipocytes, APOM was downregulated by inflammatory factors and upregulated by adiponectin. The apoM rises as a new partner of adiponectin regarding insulin sensitivity. At the adipose tissue level, the adiponectin may be supported by apoM to promote a healthy adipose tissue. NCT01277068, registered 13 January 2011; NCT02332434, registered 5 January 2015; and NCT00390637, registered 20 October 2006.
ISSN:0307-0565
1476-5497
1476-5497
0307-0565
DOI:10.1038/s41366-024-01510-w