Oxidant and enzymatic antioxidant status (gene expression and activity) in the brain of chickens with cold-induced pulmonary hypertension.
To evaluate oxidant and antioxidant status of the brain (hindbrain, midbrain, and forebrain) in chickens with cold-induced pulmonary hypertension, the measurements of lipid peroxidation, protein oxidation, antioxidant capacity, enzymatic activity, and gene expression (for catalase, glutathione peroxidase, and superoxide dismutases) were done. There were high lipid peroxidation/protein oxidation and low antioxidant capacity in the hindbrain of cold-induced pulmonary hypertensive chickens compared to control (P < 0.05). In the hypertensive chickens, superoxide dismutase activity was decreased (forebrain, midbrain, and hindbrain), while catalase activity was increased (forebrain and midbrain) (P < 0.05). Glutathione peroxidase activity did not change. Relative gene expression of catalase and superoxide dismutases (1 and 2) was downregulated, while glutathione peroxidase was upregulated in the brain of the cold-induced pulmonary hypertensive chickens. Probably, these situations in the oxidant and antioxidant status of the brain especially hindbrain may change its function at cardiovascular center and sympathetic nervous system to exacerbate pulmonary hypertension.
Department of Basic Sciences, Physiology Division, Faculty of Veterinary Medicine, Shahrekord University, P.O. BOX 115, Saman Road, Shahrekord, Iran. Hassanpur-h@vet.sku.ac.ir.
Hossein
H
Hassanpour
Department of Biology, Faculty of Science, Shahrekord University, P.O. BOX 115, Saman Road, Shahrekord, Iran.
Valiallah
V
Khalaji-Pirbalouty
Department of Biology, Faculty of Science, Shahrekord University, P.O. BOX 115, Saman Road, Shahrekord, Iran.
Leila
L
Nasiri
Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, P.O. BOX 115, Saman Road, Shahrekord, Iran.
Abdonnaser
A
Mohebbi
Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, P.O. BOX 115, Saman Road, Shahrekord, Iran.
Shahab
S
Bahadoran
D000818:Animals; D001921:Brain / Q000378:metabolism*; D002374:Catalase / Q000235:genetics / Q000378:metabolism; D002645:Chickens; D003080:Cold Temperature; D015870:Gene Expression; D005979:Glutathione Peroxidase / Q000235:genetics / Q000378:metabolism; D006352:Heart Ventricles / Q000473:pathology; D006976:Hypertension, Pulmonary / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D017380:Hypertrophy, Right Ventricular; D015227:Lipid Peroxidation; D008297:Male; D013482:Superoxide Dismutase / Q000235:genetics / Q000378:metabolism
D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase
Ascites; Broiler chicken; Enzymatic antioxidant; Pulmonary hypertension