Abstract:
:The effects of chronic ethanol consumption and ethanol withdrawal on serum cholinesterase (ChE) activity and passive avoidance task in rats were investigated. Ethanol was administered to rats by a modified liquid diet with 4.8% (v/v) ethanol for 3 days followed by 25 days on a liquid diet in which the ethanol concentration was increased to 7.2%. Control rats were pair fed with an isocaloric liquid diet not containing ethanol. ChE activity and blood ethanol concentration were measured at the end of the 4.8% ethanol consumption and after 25 days of ethanol (7.2%) feeding and, just before and 24th and 72nd h of ethanol withdrawal period. Passive avoidance acquisition was evaluated for 150 s (cut-off time) in three individual groups of ethanol-administered, ethanol withdrawn (24th and 72nd h of withdrawal) and control rats. Locomotor activity of the rats was also measured and evaluated. The daily ethanol consumption of the rats ranged from 11.5 to 14.9 g/kg. ChE activities of the ethanol feeding rats were significantly increased as compared to control rats at the 3rd (4.8% ethanol) and 25th days of chronic ethanol (7.2%) consumption and 24th h of ethanol withdrawal. It returned to control values at the 72nd h of the withdrawal. Blood ethanol levels were measured as 200 and 2.2 mg/dl at just before ethanol withdrawal and 24th h of ethanol withdrawal, respectively. Both chronic ethanol consumption and late period of ethanol withdrawal produced some significant decreases in passive avoidance latency of the rats. Our results suggest that chronic ethanol consumption and late period of ethanol withdrawal may be related to impairment of passive avoidance task in rats. In addition, serum ChE levels do not seem to be involved in impairment of cognitive functions in ethanol dependent-rats.
journal_name
Prog Neuropsychopharmacol Biol Psychiatryauthors
Celik T,Cakir E,Kayir H,Bilgi C,Uzbay ITdoi
10.1016/j.pnpbp.2004.11.012subject
Has Abstractpub_date
2005-05-01 00:00:00pages
505-9issue
4eissn
0278-5846issn
1878-4216pii
S0278-5846(04)00254-4journal_volume
29pub_type
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