Alteration in plasma chemokine profile in a high-fat diet-induced obesity mouse model.
10.4163/jnh.2018.51.5.369
- Author:
Dong Hwan KIM
1
;
Jeong Min CHO
;
Min Joon SEO
;
Ju Hyun LIM
;
Hae Rahn BAE
Author Information
1. Human Life Research Center, Dong-A University, Busan 49315, Korea. hrbae@dau.ac.kr
- Publication Type:Original Article
- Keywords:
high-fat diet;
obesity;
CXCL12;
CXCL13;
mouse
- MeSH:
Adipocytes, White;
Adipose Tissue;
Animals;
B-Lymphocytes;
Blood Glucose;
Chemokines;
Cytokines;
Diet;
Diet, High-Fat;
Hexokinase;
Humans;
Inflammation;
Male;
Mice*;
Monocytes;
Obesity*;
Plasma*;
T-Lymphocytes;
Triglycerides;
Weight Gain
- From:Journal of Nutrition and Health
2018;51(5):369-378
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Obesity is associated with a dysregulation of metabolic balance and is regarded as a low grade chronic inflammation. Western-style diet and physical inactivity are leading causes of obesity. This study examined the profiles of forty plasma cytokines and chemokines at the same time in the early stages of high-fat diet-induced obesity using a mouse model. METHODS: A total of 30 male CD1 mice, 12 ~ 14 weeks of age, were enrolled. The mice were fed a high-fat diet for 6 weeks to induce obesity. The plasma glucose and triglyceride concentrations were measured using a hexokinase colorimetric assay kit and a serum triglyceride determination kit, respectively. The relative levels of multiple cytokines and chemokines in the plasma were determined using a mouse cytokine array kit. RESULTS: The mice exhibited significant weight gain after 6 weeks of a high-fat diet. The genital fat depot was enlarged along with an increase in the number and the mean size of white adipocytes as early as 4 weeks after a high-fat diet. In addition, the plasma glucose and triglyceride levels increased significantly after 4 weeks of a high-fat diet. Cytokine array analysis revealed a remarkable increase in the expression of both CXCL12 and CXCL13, whereas the proinflammatory cytokines remained low after 4 weeks of a high-fat diet. CONCLUSION: A significant increase in plasma levels of CXCL12 and CXCL13 was observed after 4 weeks of a high-fat diet, which might induce the migration of B lymphocytes, T lymphocytes, and monocytes from the blood to expanding adipose tissue or fat associated lymphoid clusters, playing a key role in adipose tissue remodeling and local immunity during the early stages of high-fat diet-induced obesity.
