Abstract Title:

Effects of ethyl acetate extract of Kaempferia parviflora on brown adipose tissue.

Abstract Source:

J Nat Med. 2016 Jan ;70(1):54-61. Epub 2015 Sep 19. PMID: 26386971

Abstract Author(s):

Hiroko Kobayashi, Emi Horiguchi-Babamoto, Mio Suzuki, Hiroko Makihara, Hiroshi Tomozawa, Masahito Tsubata, Tsutomu Shimada, Kiyoshi Sugiyama, Masaki Aburada

Article Affiliation:

Hiroko Kobayashi

Abstract:

We have previously reported the effects of Kaempferia parviflora (KP), including anti-obesity, preventing various metabolic diseases, and regulating differentiation of white adipose cells. In this study we used Tsumura, Suzuki, Obese Diabetes (TSOD) mice--an animal model of spontaneous obese type II diabetes--and primary brown preadipocytes to examine the effects of the ethyl acetate extract of KP (KPE) on brown adipose tissue, which is one of the energy expenditure organs. TSOD mice were fed with MF mixed with either KPE 0.3 or 1% for 8 weeks. Computed tomography images showed that whitening of brown adipocytes was suppressed in the interscapular tissue of the KPE group. We also examined mRNA expression of uncoupling protein 1 (UCP-1) andβ3-adrenalin receptor (β3AR) in brown adipose tissue. As a result, mRNA expression of UCP-1 significantly increased in the KPE 1% treatment group, indicating that KPE activated brown adipose tissue. We then evaluated the direct effects of KPE on brown adipocytes using primary brown preadipocytes isolated from interscapular brown adipocytes in ICR mice. Triacylglycerol (TG) accumulation in primary brown preadipocytes was increased by KPE in a dose-dependent manner. Each mRNA expression of peroxisome proliferator-activated receptor γ (PPARγ), UCP-1, and β3AR exhibited an upward trend compared with the control group. Moreover, some polymethoxyflavonoids (PMFs), the main compound in KP, also increased TG accumulation. This study therefore showed that KPE enhanced the thermogenesis effect of brown adipocytes as well as promoted the differentiation of brown adipocyte cells.

Study Type : Animal Study

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