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The Inhibitory Effect of L. plantarum Q180 on Adipocyte Differentiation in 3T3-L1 and Reduction of Adipocyte Size in Mice Fed High-fat Diet
Korean J. Food Sci. An. 2018;38:99-109
Published online February 28, 2018
© 2018 Korean Society for Food Science of Animal Resources

Sun-Young Park, Seulki Kim, and Sang-Dong Lim*

Korea Food Research Institute, Wanju 55365, Korea
Correspondence to: Sang-Dong Lim
Korea Food Research Institute, Wanju 55365, Korea
Tel: +82-63-219-9082
Fax: +82-63-219-9288
E-mail: limsd@kfri.re.kr
Received September 4, 2017; Revised December 18, 2017; Accepted December 28, 2017.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In this study, we examined the inhibitory effect of L. plantarum Q180 on adipocyte differentiation in 3T3-L1 and reduction of adipocyte size in mice fed high-fat diet. L. plantarum Q180 inhibited the adipocyte differentiation of 3T3-L1 cells (18.47 ± 0.32%) at a concentration of 400 μg/mL (108 CFU/g). As a result of western blot analysis, the expression of C/EBPα and PPARγ in 3T3-L1 adipocyte treated with 400 μg/mL of L. plantarum Q180 decreased 35.16% and 40.07%, respectively, compared with the control. To examine the effects, mice were fed three different diets as follows: ND (n=6) was fed ND and orally administered saline solution; HFD (n=6), HFD and orally administered saline solution; and HFD+Q180 (n=6), HFD and orally administered L. plantarum Q180. After six weeks, the rate of increase of body weight was 13.7% lower in the HFD+Q180 group compared to the HFD group. In addition, the epididymal fat weights of the HFD+Q180 group were lower than that of the HFD group. The change of adipocyte size was measured in diet-induced obese mice. Consequently, the number of large-size adipose tissue was less distributed in the ND and HFD+Q180 groups than in the HFD group. L. plantarum Q180 has an effect on the inhibition of 3T3-L1 adipocyte differentiation, fat absorption and reduction of adipocyte size. L. plantarum Q180 could be applied to functional food products that help improve obesity.
Keywords : adipocyte differentiation, adipocyte size, body weight, Lactobacillus plantarum


June 2018, 38 (3)