Effect of Lauric vs. Oleic Acid-Enriched Diets on Leptin Autoparacrine Signalling in Male Mice.

Autor:	Fernández-Felipe J; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain., Plaza A; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain.; Laboratory of Bioactive Products and Metabolic Syndrome (BIOPROMET), IMDEA Food Institute, 28049 Madrid, Spain., Domínguez G; Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, 28660 Madrid, Spain., Pérez-Castells J; Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, 28660 Madrid, Spain., Cano V; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain., Cioni F; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain., Del Olmo N; Departament of Psychobiology, Facultad de Psicología, Universidad Nacional de Educación a Distancia, 28040 Madrid, Spain., Ruiz-Gayo M; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain., Merino B; Department of Health and Pharmaceutical Sciences, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28660 Madrid, Spain.
Jazyk:	angličtina
Zdroj:	Biomedicines [Biomedicines] 2022 Aug 02; Vol. 10 (8). Date of Electronic Publication: 2022 Aug 02.
DOI:	10.3390/biomedicines10081864
Abstrakt:	High-fat diets enriched with lauric acid (SOLF) do not enhance leptin production despite expanding white adipose tissue (WAT). Our study aimed at identifying the influence of SOLF vs. oleic acid-enriched diets (UOLF) on the autoparacrine effect of leptin and was carried out on eight-week-old mice consuming control chow, UOLF or SOLF. Phosphorylation of kinases integral to leptin receptor (LepR) signalling pathways (705Tyr-STAT3, 473Ser-Akt, 172Thr-AMPK), adipocyte-size distribution, fatty acid content, and gene expression were analyzed in WAT. SOLF enhanced basal levels of phosphorylated proteins but reduced the ability of leptin to enhance kinase phosphorylation. In contrast, UOLF failed to increase basal levels of phosphorylated proteins and did not modify the effect of leptin. Both SOLF and UOLF similarly affected adipocyte-size distribution, and the expression of genes related with adipogenesis and inflammation. WAT composition was different between groups, with SOLF samples mostly containing palmitic, myristic and lauric acids (>48% w/w) and UOLF WAT containing more than 80% (w/w) of oleic acid. In conclusion, SOLF appears to be more detrimental than UOLF to the autoparacrine leptin actions, which may have an impact on WAT inflammation. The effect of SOLF and UOLF on WAT composition may affect WAT biophysical properties, which are able to condition LepR signaling. Competing Interests: The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of this reported research.
Databáze:	MEDLINE
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