title: Effects of diphenyl-diselenide on orofacial dyskinesia model in rats.
abstract: Recently, we have described the beneficial effects of Diphenyl diselenide, an organochalcogen with glutathione peroxidase-like activity, on reserpine-induced orofacial dyskinesia in old rats. In this study, our aim was to examine the effects of diselenide on haloperidol-induced orofacial dyskinesia in rats. Male wistar rats received one single dose of Haloperidol decanoate (57 mg/kg/im) or control. After this dose, the animals received daily administration of diphenyl diselenide (1, 5 or 10 mg/kg/sc) or control, during 28 days. Twenty-four hours after the last diselenide or control solution injection, all the rats were observed for quantification of oral dyskinesia through the frequency of vacuous chewing movements (VCM) and tongue protrusion (TP) and the duration of facial twitching (FT). Haloperidol caused a significant increase in VCM, TP and FT observed in the 4 weekly evaluations (p<0.05). The co-administration of diselenide (5 mg/kg) reversed this effect for all the parameters in four behavioral sessions. The results of the present study demonstrate the possible protective activity of diphenyl diselenide on haloperidol-induced orofacial diskinesia. This effect is in accordance to the involvement of neurotoxicity in orofacial dyskinesia and suggest that studies be continued with new antioxidant compounds.
authors.affiliation: Departamento de Fisiologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria 97105-900, Santa Maria, RS, Brazil. Mariliseeb@yahoo.com.br
authors.forename: Marilise E
authors.initials: ME
authors.lastname: Burger
authors.forename: Roselei
authors.initials: R
authors.lastname: Fachinetto
authors.forename: Caroline
authors.initials: C
authors.lastname: Wagner
authors.forename: Juliano
authors.initials: J
authors.lastname: Perottoni
authors.forename: Romaiana P
authors.initials: RP
authors.lastname: Pereira
authors.forename: Gilson
authors.initials: G
authors.lastname: Zeni
authors.forename: João B T
authors.initials: JB
authors.lastname: Rocha
mesh_terms: D000818:Animals; D001555:Benzene Derivatives / Q000627:therapeutic use*; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D004409:Dyskinesia, Drug-Induced / Q000188:drug therapy / Q000503:physiopathology / Q000517:prevention & control*; D006220:Haloperidol / Q000633:toxicity; D008297:Male; D016566:Organoselenium Compounds / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D001555:Benzene Derivatives; D016566:Organoselenium Compounds; C061132:diphenyldiselenide; D006220:Haloperidol