essential oil of pinus koraiensis exerts antiobesic and hypolipidemic activity via inhibition of peroxisome proliferator-activated receptors gamma signaling
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2013
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Abstract
Our group previously reported that essential oil of Pinus koraiensis (EOPK) exerts antihyperlipidemic effects via upregulation of low-density lipoprotein receptor and inhibition of acyl-coenzyme A. In the present study, we investigated the antiobesity and hypolipidemic mechanism of EOPK using in vitro 3T3-L1 cells and in vivo HFD-fed rats. EOPK markedly suppressed fat accumulation and intracellular triglyceride associated with downregulation of adipogenic transcription factor expression, including PPARγ and CEBPα in the differentiated 3T3-L1 adipocytes. Additionally, EOPK attenuated the expression levels of FABP and GPDH as target genes of PPARγ during adipocyte differentiation. Furthermore, PPARγ inhibitor GW9662 enhanced the decreased expression of FABP and PPARγ and fat accumulation induced by EOPK. To confirm the in vitro activity of EOPK, animal study was performed by administering normal diet, HFD, and/or EOPK at the dose of 100 or 200 mg/kg for 6 weeks. Consistently, EOPK significantly suppressed body weight gain, serum triglyceride, total cholesterol, LDL cholesterol, and AI value and increased HDL cholesterol in a dose-dependent manner. Immunohistochemistry revealed that EOPK treatment abrogated the expression of PPARγ in the liver tissue sections of EOPK-treated rats. Taken together, our findings suggest that EOPK has the antiobesic and hypolipidemic potential via inhibition of PPARγ-related signaling.
| Reference Key |
ko2013evidence-basedessential
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|---|---|
| Authors | ;Hyun-Suk Ko;Hyo-Jeong Lee;Hyo-Jung Lee;Eun Jung Sohn;Miyong Yun;Min-Ho Lee;Sung-Hoon Kim |
| Journal | ACS applied materials & interfaces |
| Year | 2013 |
| DOI |
10.1155/2013/947037
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| URL | |
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