Depot-specific Inflammation with Decreased Expression of ATM2 in White Adipose Tissues Induced by High-margarine/lard Intake
Overview
Authors
Affiliations
A high-fat diet has been recognized as an important risk factor of obesity, with variable impacts of different fatty acid compositions on the physiological process. To understand the effects of a high-margarine/lard diet, which is a major source of trans fatty acids (TFAs)/ saturated fatty acids (SFAs), elaidic acid as a biomarker of margarine intake was used to screen affected adipokines on mature human adipocytes in vitro. Weaned male Wistar rats were fed a high-fat diet enriched with margarine/lard to generate obesity-prone (OP) and obesity-resistant (OR) models, which were then used to explore the inflammatory responses of depot-specific white adipose tissue. Adiposity, glucose and lipid metabolism parameters and macrophage cell markers were also compared in vivo. In the subcutaneous depot, a high-margarine diet induced elevated IL-6, MCP-1 and XCL1 expression levels in both M-OP and M-OR groups. High-lard diet-fed rats displayed higher protein expression levels of MCP-1 and XCL1 compared with the control group. In the epididymal depot, significantly elevated IL-6 production was observed in M-OP rats, and high-lard diet-fed rats displayed elevated IL-6 and decreased XCL1 expression. In the retroperitoneal depot, a high-margarine diet caused higher IL-6 and MCP-1 expression levels, a high-lard diet caused elevated IL-6 expression in L-OP/L-OR rats, and elevated XCL1 expression was observed only in L-OP rats. In general, CD206 mRNA levels were notably down-regulated by high-fat diet feeding in the above-mentioned depots. CD11c mRNA levels were slightly upregulated in the subcutaneous depot of OP rats fed a high-margarine/lard diet. In the epidydimal depot, higher expression levels of F4/80 and CD206 mRNA were observed only in high-margarine diet-fed OP rats. These results suggest that depot-specific inflammation with decreased expression of adipose tissue anti-inflammatory M2-type (ATM2) macrophages could be induced by high-margarine/lard intake.
The Role of Chemokines in Obesity and Exercise-Induced Weight Loss.
He W, Wang H, Yang G, Zhu L, Liu X Biomolecules. 2024; 14(9).
PMID: 39334887 PMC: 11430256. DOI: 10.3390/biom14091121.
Zong Q, Bundkirchen K, Neunaber C, Noack S Int J Mol Sci. 2023; 24(5).
PMID: 36902259 PMC: 10003331. DOI: 10.3390/ijms24054831.
Farsi F, Zonooz S, Ebrahimi Z, Jebraili H, Morvaridi M, Azimi T Turk J Gastroenterol. 2022; 33(12):1033-1042.
PMID: 36098366 PMC: 9797755. DOI: 10.5152/tjg.2022.21651.
Laget J, Djohan Y, Jeanson L, Muyor K, Badia E, Cristol J Nutrients. 2021; 13(4).
PMID: 33808251 PMC: 8065769. DOI: 10.3390/nu13041134.
Yan S, Zhou H, Liu S, Wang J, Zeng Y, Matias F Lipids Health Dis. 2020; 19(1):30.
PMID: 32113467 PMC: 7049192. DOI: 10.1186/s12944-020-01212-y.