title: Bioactivities of alcohol based extracts of Phyllanthus emblica branches: antioxidation, antimelanogenesis and anti-inflammation.
abstract: Phyllanthus emblica is an euphorbiaceous plant that has long been used in traditional medicines for health promotion, anti-aging and also for treatment of wide ranges of symptoms and diseases. The aim of this study is to investigate the pharmacological activity of the plant branch. Alcohol based extracts of P. emblica branch were prepared in 50 % ethanolic extract by maceration (EPE) and methanolic extract by Soxhlet apparatus (MPE). EPE and MPE contained high total phenolic content and strong antioxidative activity. By HPLC analysis, gallic acid and vanillic acid are the major phenolic compounds of these extracts. Both EPE and MPE inhibited tyrosinase activity stronger than the ethanolic extract of P. emblica fruit (IC50 of 247.37 ± 18.57 and 193.75 ± 44.90 versus 4346.95 ± 166.23 μg/ml). EPE significantly inhibited the mRNA expressions of tyrosinase, and tyrosinase related proteins (TRP-1 and TRP-2) in B16 murine melanoma cells and suppressed the expression of LPS-induced pro-inflammatory genes (COX-2, iNOS, TNF-α, IL-16 and IL-6) in RAW 264.7 murine macrophage cells in a dose-dependent manner. These extracts significantly suppressed the carrageenan-induced paw edema in rats in a dose-dependent manner.
authors.affiliation: Center for Research and Development of Herbal Health Products, Faculty of Pharmaceutical Sciences, Khon Kaen University, 123 Mitrapap Rd., Khon Kaen, 40002, Thailand, bungorn@kku.ac.th.
authors.forename: Bungorn
authors.initials: B
authors.lastname: Sripanidkulchai
authors.forename: Jintana
authors.initials: J
authors.lastname: Junlatat
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D002460:Cell Line; D045744:Cell Line, Tumor; D004791:Enzyme Inhibitors / Q000737:chemistry / Q000494:pharmacology; D000431:Ethanol / Q000737:chemistry; D005638:Fruit / Q000737:chemistry; D018836:Inflammation Mediators / Q000378:metabolism; D008297:Male; D051379:Mice; D014442:Monophenol Monooxygenase / Q000037:antagonists & inhibitors*; D010636:Phenols / Q000032:analysis; D029842:Phyllanthus emblica / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D000893:Anti-Inflammatory Agents; D000975:Antioxidants; D004791:Enzyme Inhibitors; D018836:Inflammation Mediators; D010636:Phenols; D010936:Plant Extracts; D000431:Ethanol; D014442:Monophenol Monooxygenase