Document Detail

Inhibitory activity of Aralia continentalis roots on protein tyrosine phosphatase 1B and rat lens aldose reductase.
MedLine Citation:
PMID:  23139128     Owner:  NLM     Status:  In-Data-Review    
As part of our continuous search for compounds from natural sources that can treat diabetes and its diabetic complications, in the present work, we investigated the protein tyrosine phosphatase 1B (PTP1B) and rat lens aldose reductase (RLAR) inhibitory activities of the roots of Aralia continentalis. The methanol extract showed a potent inhibitory activity against PTP1B and RLAR. Among the tested fractions, the n-hexane fraction exhibited the highest PTP1B inhibitory activity, while the EtOAc fraction showed highest RLAR inhibitory activity. Bioassayguided fractionation of the active n-hexane and EtOAc soluble fractions resulted in the isolation of the diterpenoids; ent-pimara-8(14),15-diene-19-oic acid (continentalic acid, 1); ent-kaur-16-en-19-oic-acid (kaurenoic acid, 2); ent-pimara-8(14),15-diene-19-ol (3); 7-oxo-ent-pimara-8(14),15-diene-19-oic acid (4); 16á-hydroxy-17-isovaleroyloxy-ent-kauran-19-oic acid (5); 17-hydroxy-entkaur-15-en-19-oic acid (6); 15á,16á-epoxy-17-hydroxy-ent-kauran-19-oic acid (7); 16á,17-dihydroxy-ent-kauran-19-oic acid (8); 8á-hydroxy-ent-pimara-15-en-19-ol (9); 4-epirulopezol (10) and 4â-hydroxy-19-nor-(-)-pimara-8(14),15-diene (11), from the n-hexane fraction, and 4-[formy-5-(methoxymethyl)-1H-pyrrol-1-yl] butanoic acid (12); vanillic acid (13); 4-hydroxybenzoic acid (14); protocatechuic acid (15); nicotinic acid (16); aralia cerebroside (17); 5-O-feruloly quinic acid (18) from the EtOAc fraction. Of these, compounds 12∼14, 16 and 18 were isolated from A. continentalis for the first time. Compounds 1∼10 exhibited inhibitory potential against PTP1B, while compounds 12, 17, and 18 were found to be active against RLAR. Taken together, these results clearly demonstrate that the roots of A. continentalis displayed anti-diabetic and antidiabetic properties, which could be further explored to develop therapeutic and preventive agents for the treatment of diabetes and related complications.
Hee Jin Jung; Hyun Ah Jung; Sam Sik Kang; Je-Hyun Lee; Yoon Sook Cho; Kyong Ho Moon; Jae Sue Choi
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Publication Detail:
Type:  Journal Article     Date:  2012-11-09
Journal Detail:
Title:  Archives of pharmacal research     Volume:  35     ISSN:  0253-6269     ISO Abbreviation:  Arch. Pharm. Res.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-11-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8000036     Medline TA:  Arch Pharm Res     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  1771-7     Citation Subset:  IM    
Department of Food Science and Nutrition, Pukyong National University, Busan, 608-737, Korea.
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