title: Free radical scavenging activity of the marine mangrove Rhizophora apiculata bark extract with reference to naphthalene induced mitochondrial dysfunction.
abstract: Rhizophora apiculata bark extract was tested for its free radical scavenging activity and protective role against mitochondrial dysfunction in naphthalene stressed rats. Lipid peroxidation activity was increased and activity of mitochondrial enzymes (cytochrome-c-oxidase, NADH-dehydrogenase, alpha-ketoglutarate dehydrogenase and succinate dehydrogenase) and glutathione was decreased in the liver and kidney of rats intoxicated with naphthalene when compared to control rats. Intraperitoneal administration of plant extract significantly reduced the lipid peroxidation, increased the activity of mitochondrial enzymes and increased glutathione to near control levels. These results suggest that the sulfated polysaccharides in R. apiculata play a protective role through their free radical scavenging properties.
authors.affiliation: Department of Pharmacology and Environmental Toxicology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, Tamil Nadu, India. viji222@rediffmail.com <viji222@rediffmail.com>
authors.forename: K
authors.initials: K
authors.lastname: Vijayavel
authors.forename: C
authors.initials: C
authors.lastname: Anbuselvam
authors.forename: M P
authors.initials: MP
authors.lastname: Balasubramanian
mesh_terms: D000818:Animals; D016166:Free Radical Scavengers / Q000494:pharmacology; D005978:Glutathione / Q000378:metabolism; D007668:Kidney / Q000187:drug effects / Q000378:metabolism; D008054:Lipid Peroxides / Q000378:metabolism; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D008928:Mitochondria / Q000201:enzymology; D028361:Mitochondrial Diseases / Q000139:chemically induced / Q000188:drug therapy* / Q000201:enzymology; D009281:Naphthalenes; D008517:Phytotherapy / Q000379:methods*; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D043982:Rhizophoraceae / Q000737:chemistry*
chemical_list: D016166:Free Radical Scavengers; D008054:Lipid Peroxides; D009281:Naphthalenes; D010936:Plant Extracts; C031721:naphthalene; D005978:Glutathione