Effect of exercise training and chronic ethanol ingestion on cholinesterase activity and lipid peroxidation in blood and brain regions of rat.
1. This study examines the effects of exercise training and chronic ethanol consumption on cholinesterase activity and its relationship to lipid peroxidation in blood and brain regions of rat. 2. Exercise training (6.5 weeks) decreased acetylcholinesterase (AChE) activity significantly (64% of control) in hypothalamus and increased AChE activity in cerebral cortex (149% of control), whereas, malondialdehyde (MDA) levels increased in hypothalamus (129% of control) and decreased in cortex, striatum, and cerebellum (50%, 69% and 75% of control), respectively. 3. Chronic ethanol ingestion (2.0 gm/kg, p.o. for 6.5 weeks) significantly increased butyrylcholinesterase (BuChE) activity in plasma (136% of control) and decreased AChE activity in hypothalamus (63% of control), whereas, MDA levels increased in hypothalamus, cortex, and plasma (140%, 130% and 220% of control), respectively. 4. The combination significantly increased BuChE activity (173% of control) in plasma and decreased AChE activity (71% of control) in hypothalamus and (57% of control) in cerebellum, whereas, MDA levels increased in hypothalamus, cerebellum, medulla and plasma (134%, 128%, 140% and 309% of control), respectively. 5. Exercise training, chronic ethanol ingestion, and combination selectively inhibited hypothalamic AChE and the inhibition was correlated with increased lipid peroxidation (r = 0.11, 0.41 and 0.45) which may perturb hypothalamic function. The combination enhanced the peripheral stress response by increasing plasma BuChE activity and lipid peroxidation.
Husain
K
K
Southern Illinois University School of Medicine, Department of Pharmacology Springfield, USA.
Somani
S M
SM
D000818:Animals; D001921:Brain / Q000378:metabolism; D002492:Central Nervous System Depressants / Q000494:pharmacology*; D002802:Cholinesterases / Q000097:blood / Q000187:drug effects / Q000378:metabolism*; D000431:Ethanol / Q000494:pharmacology*; D015227:Lipid Peroxidation / Q000187:drug effects*; D008297:Male; D010805:Physical Conditioning, Animal; D051381:Rats; D011916:Rats, Inbred F344
D002492:Central Nervous System Depressants; D000431:Ethanol; D002802:Cholinesterases