Enhanced behavioral response by decreasing brain oxidative stress to 6-hydroxy-l-nicotine in Alzheimer's disease rat model. (30th March 2015)

• Record Type: Journal Article
• Authors: Hritcu, Lucian; Stefan, Marius; Brandsch, Roderich; Mihasan, Marius
• Is Part Of: Neuroscience letters. Volume 591(2015)
• Page Start: 41
• Page End: 47
• Publication Date: 2015-03-30
• Subjects: Arthrobacter nicotinovorans -- 6-ydroxy-Hl-nicotine -- Scopolamine -- Memory -- Oxidative stress; Neurology -- Periodicals; Neurology -- Periodicals; Research -- Periodicals; Neurologie -- Périodiques; Neuroanatomie -- Périodiques; Neuropharmacologie -- Périodiques; Neurophysiologie -- Périodiques; Neurology; Periodicals; Electronic journals; 617.48
• DOI: 10.1016/j.neulet.2015.02.014
• Languages: English
• ISSNs: 0304-3940

Abstract

Highlights: 6HLN ameliorated scopolamine-induced spatial memory impairment. 6HLN decreased oxidative stress in scopolamine-treated rats. 6HLN may be a viable therapeutic alternative to improve memory. Abstract: 6-Hydroxy-l -nicotine (6HLN) is a nicotine metabolite resulted from nicotine degradation within Arthrobacter nicotinovorans with positive effects on spatial memory and oxidative stress damage. In the present study, the effects of 6HLN on spatial memory performance were assessed in scopolamine-treated rats. Scopolamine-induced memory impairments were observed, as measured by the Y-maze and radial arm-maze tasks. Decreased activities of superoxide dismutase, glutathione peroxidase and catalase along with decrease of total content of reduced glutathione were observed in the rat hippocampal homogenates of scopolamine-treated animals as compared with control. Production of malondialdehyde (lipid peroxidation) significantly increased in the rat hippocampal homogenates of scopolamine-treated animals as compared with control, as a consequence of impaired antioxidant enzymes activities. Additionally, in scopolamine-treated rats 6HLN significantly improved memory formation and decreased oxidative stress, suggesting memory-enhancing and antioxidant effects. Therefore, our results suggest that administration of 6HLN ameliorates scopolamine-induced spatial memory impairment by attenuation of the oxidative stress in the rat hippocampus.