title: Agomelatine Protection in an LPS-Induced Psychosis-Relevant Behavior Model.
abstract: BACKGROUND The aim of this study was to investigate the effect of agomelatine in a psychosis-relevant behavior model. MATERIAL AND METHODS We used 18 adult male Wistar rats in this study. Twelve rats given LPS for endotoxemia were randomly divided into 2 groups (n=6). Group I was treated with 1 mL/kg 0.9% NaCl i.p. and Group II was treated with 40 mg/kg agomelatine. Six normal rats served as the control group and were not given LPS for endotoxemia. Cylindrical steel cages containing vertical and horizontal metal bars with top cover were used. Rats were put in these cages for the purpose of orientation for 10 min. Apomorphine was given to rats removed from cages, and then they were immediately put back in the cages for the purpose of observing stereotyped conduct. Brain HVA levels and plasma TNF-a levels were evaluated in tissue homogenates using ELISA. The proportion of malondialdehyde (MDA) was measured in samples taken from plasma for detection of lipid peroxidation similar to thiobarbituric acid reactive substances. RESULTS LPS induced-plasma TNF-α, brain TNF-α, and plasma MDA levels were significantly lower in the LPS+agomelatine group compared to the LPS+saline group (p<0.05). HVA levels and stereotype scores were significantly lower in the LPS+agomelatine group compared to the LPS+saline group (p <0.001). CONCLUSIONS Agomelatine reduced TNF-α, HVA, MDA levels, and the stereotype score in relevant models of psychosis. Our results suggest that the anti-inflammatory effect of agomelatine involved oxidant cleansing properties and that its effects on the metabolism of dopamine can play an important role in the model of psychosis.
authors.affiliation: Department of Psychiatry, Governor Recep Yazicioglu Mental Health and Disease Hospital, Tokat, Turkey.
authors.forename: Sema
authors.initials: S
authors.lastname: Inanir
authors.affiliation: Department of Psychiatry, Mustafa Kemal University, School of Medicine, Hatay, Turkey.
authors.forename: Umit Sertan
authors.initials: US
authors.lastname: Copoglu
authors.affiliation: Department of Psychiatry, Mustafa Kemal University, School of Medicine, Hatay, Turkey.
authors.forename: Hanifi
authors.initials: H
authors.lastname: Kokacya
authors.affiliation: Department of Physiology, Mustafa Kemal University, School of Medicine, Hatay, Turkey.
authors.forename: Recep
authors.initials: R
authors.lastname: Dokuyucu
authors.affiliation: Department of Physiology, Medical Faculty, Gaziosmanpasa University, Tokat, Turkey.
authors.forename: Oytun
authors.initials: O
authors.lastname: Erbas
authors.affiliation: Department of Physical Therapy and Rehabilitation, Faculty of Medicine, Gaziosmanpasa University, Tokat, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Inanir
mesh_terms: D000081:Acetamides / Q000008:administration & dosage*; D000818:Animals; D001921:Brain / Q000196:embryology; D008070:Lipopolysaccharides / Q000633:toxicity*; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D008550:Melatonin / Q000819:agonists; D011618:Psychotic Disorders / Q000209:etiology / Q000517:prevention & control*; D051381:Rats; D017208:Rats, Wistar; D014409:Tumor Necrosis Factor-alpha / Q000097:blood / Q000378:metabolism; D009281:Naphthalenes
chemical_list: D000081:Acetamides; D008070:Lipopolysaccharides; D008315:Malondialdehyde; D008550:Melatonin; D014409:Tumor Necrosis Factor-alpha; C084711:agomelatine; D009281:Naphthalenes