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Medium-chain fatty acid receptor GPR84 deficiency leads to metabolic homeostasis dysfunction in mice fed high-fat diet
Overconsumption of food, especially dietary fat, leads to metabolic disorders such as obesity and type 2 diabetes. Long-chain fatty acids, such as palmitoleate are recognized as the risk factors for these disorders owing to their high-energy content and lipotoxicity. In contrast, medium-chain fatty acids (MCFAs) metabolic benefits; however, their underlying molecular mechanisms remain unclear. GPR84 is an MCFA receptor, particularly for C10:0. Although evidence from in vitro experiments and oral administration of C10:0 in mice suggests that GPR84 is related to the metabolic benefits of MCFAs via glucose metabolism, its precise roles in vivo remain unclear. Therefore, the present study investigated whether GPR84 affects glucose metabolism and metabolic function using Gpr84-deficient mice. Although Gpr84-deficient mice were lean and had increased endogenous MCFAs under high-fat diet feeding conditions, they exhibited hyperglycemia and hyperlipidemia along with lower plasma in sulin and glucagon-like peptide-1 (GLP-1) levels compared with wild-type mice. Medium-chain triglyceride (C10:0) intake suppressed obesity, and improved plasma glucose and lipid levels, and increased plasma GLP-1 levels in wild-type mice; however, these effects were partially attenuated in Gpr84-deficient mice. Our results indicate that long-term MCFA-mediated GPR84 activation improves the dysfunction of glucose and lipid homeostasis. Our findings may be instrumental for future studies on drug development with GPR84 as a potential target, thereby offering new avenues for the treatment of metabolic disorders like obesity and type 2 diabetes. ©2024 The Authors FASEB BioAdvances published by The Federation of American Societies for Experimental Biology.
Authors : Nishida A.; Ohue-Kitano R.; Masujima Y.; Nonaka H.; Igarashi M.; Ikeda T.; Kimura I.
Source : John Wiley and Sons Inc
Article Information
| Year | 2024 |
| Type | Article |
| DOI | 10.1096/fba.2024-00075 |
| ISSN | 25739832 |
| Volume | 6 |
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