title: Hepatoprotective effects of purple potato extract against D-galactosamine-induced liver injury in rats.
abstract: We investigated the hepatoprotective effect of purple potato extract (PPE) against D-galactosamine (GalN)-induced liver injury in rats. PPE (400 mg) was administered once daily for 8 d, and then GalN (250 mg/kg of body weight) was injected at 22 h before the rats were killed. Serum tumor necrosis factor alpha (TNF-alpha), lactate dehydrogenase (LDH), alanine aminotransferase (ALT), and asparate aminotranferase (AST) levels increased significantly after injection of GalN, but PPE inhibited GalN-induced alterations in serum TNF-alpha, LDH, ALT, and AST levels. Hepatic lipid peroxide and glutathione levels in the control + GalN group were higher and lower respectively than those in the control group, and those in the PPE + GalN group did not differ from that in the control group. The lipid peroxide level in hepatic microsomes treated with 2,2'-azobis (2-amidinopropane) dihydrochloride in the PPE group was significantly lower than that in the control group. This suggests that PPE has hepatoprotective effects against GalN-induced hepatotoxicity via inhibition lipid peroxidation and/or inflammation in rats.
authors.affiliation: Department of Agriculture and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido.
authors.forename: Kyu-Ho
authors.initials: KH
authors.lastname: Han
authors.forename: Naoto
authors.initials: N
authors.lastname: Hashimoto
authors.forename: Ken-Ichiro
authors.initials: K
authors.lastname: Shimada
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Sekikawa
authors.forename: Takahiro
authors.initials: T
authors.lastname: Noda
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Yamauchi
authors.forename: Makoto
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Chiji
authors.forename: David L
authors.initials: DL
authors.lastname: Topping
authors.forename: Michihiro
authors.initials: M
authors.lastname: Fukushima
mesh_terms: D000818:Animals; D001066:Appetite / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D056486:Chemical and Drug Induced Liver Injury; D003116:Color; D005688:Galactosamine / Q000494:pharmacology*; D005978:Glutathione / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology*; D008107:Liver Diseases / Q000473:pathology / Q000517:prevention & control*; D008297:Male; D009569:Nitric Oxide / Q000097:blood; D009929:Organ Size / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology; D051381:Rats; D011198:Solanum tuberosum / Q000737:chemistry*; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D010936:Plant Extracts; D017392:Thiobarbituric Acid Reactive Substances; D014409:Tumor Necrosis Factor-alpha; D009569:Nitric Oxide; D005688:Galactosamine; D005978:Glutathione