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Acetyl-keto-β-boswellic acid induces lipolysis in mature adipocytes.
MedLine Citation:
PMID:  23313487     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Recently, it was reported that naturally occurring pentacyclic triterpenoids such as ursolic acid have anti-adiposity property. We studied if acetyl-keto-β-boswellic acid (AKBA), an established anti-inflammation and anti-cancer pentacyclic triterpenoid which has similar chemical structure to ursolic acid, may modulate adipocyte phenotype. 3T3-L1 murine adipocytes and human subcutaneous adipocytes were treated by AKBA in different concentrations in vitro. AKBA triggered significant lipolysis in 3T3-L1 adipocytes as shown by reduced neutral lipids in cytosol and increased free fatty acids in culture medium. Increased lipolysis by AKBA was accompanied by up-regulation of lipolytic enzymes adipocyte triglyceride lipase (ATGL) and hormone sensitive lipase (HSL) and a decreased expression of lipid droplet stability regulator perilipin. In addition, AKBA treatment reduced phenotypic markers of mature adipocyte aP2, adiponectin and glut-4 in mature adipocytes. Further studies revealed that AKBA down-regulated PPAR-γ and C/EBP-α expression in a dose and temporal dependent manner in mature adipocytes. In human adipocytes, AKBA likewise mobilized lipolysis accompanied by down-regulation of PPAR-γ2 expression and loss of phenotypic markers of mature adipocytes.
Authors:
Jian-Jun Liu; Wan Ching Toy; Sylvia Liu; Anton Cheng; Boon Khim Lim; Tavin Subramaniam; Chee Fang Sum; Su Chi Lim
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-9
Journal Detail:
Title:  Biochemical and biophysical research communications     Volume:  -     ISSN:  1090-2104     ISO Abbreviation:  Biochem. Biophys. Res. Commun.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372516     Medline TA:  Biochem Biophys Res Commun     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013. Published by Elsevier Inc.
Affiliation:
Clinical Research Unit, Khoo Teck Puat Hospital, Singapore 768828. Electronic address: liu.jianjun@alexandrahealth.com.sg.
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