Abstract:
:Mecamylamine, a noncompetitive antagonist of nicotinic acetylcholine receptors, has many potential clinical applications, including treating alcohol dependency. However, little is known about the combined effects of mecamylamine and alcohol on visual system electrophysiology. We examined the separate and combined effects of mecamylamine (4.0mg/kg, ip) and alcohol (2.0 g/kg, ip) on flash-evoked potentials (FEPs) recorded from the visual cortex (VC) and superior colliculus (SC) of chronically implanted adult male Long-Evans rats. On separate days, either saline or mecamylamine was given 10 min prior to either saline or ethanol. FEPs were recorded 15 and 30 min after the second injection. In the VC, alcohol significantly decreased the amplitudes of components P23, N29, N39, P89, N143, and P237, but increased P46. N63 amplitude was not significantly altered. In contrast, mecamylamine increased the amplitude of P23, P46, and N63, but reduced the amplitude of N29 and P237. The combination of mecamylamine and alcohol resulted in amplitudes very similar to alcohol alone for components P23, N29, N63, P89, N143, and P237. However, mecamylamine pretreatment reduced the effects of alcohol on components N39 and P46. In the SC, FEP component amplitudes were generally decreased by alcohol but not significantly altered by mecamylamine. Mecamylamine pretreatment did not significantly alter the effects of alcohol on SC amplitudes. Latencies of nearly all components in both structures were significantly increased by all drug treatments, with the greatest increase produced by the combination treatment. Hypothermia was also produced by all drug treatments, with the greatest hypothermia (2.25 °C) produced by the combination treatment, most likely accounting for much of the drug-induced increase in latencies. All drug treatments reduced movement during FEP testing, but later in an open field alcohol increased ambulation while mecamylamine reduced movement. Separate groups of experimentally naïve adult male Holtzman albino and Long-Evans hooded rats were given (ip) either alcohol or mecamylamine plus alcohol. Tail vein samples were taken 30 min later. For both rat strains, blood alcohol concentration in the mecamylamine pretreatment group was significantly less at this time interval by about 50-60 mg/dL, suggesting a mechanism whereby mecamylamine can mitigate some of the acute effects of alcohol (e.g., on VC components N39 and P46).
journal_name
Prog Neuropsychopharmacol Biol Psychiatryauthors
Hetzler BE,Bauer AMdoi
10.1016/j.pnpbp.2012.11.016subject
Has Abstractpub_date
2013-06-03 00:00:00pages
29-39eissn
0278-5846issn
1878-4216pii
S0278-5846(12)00298-9journal_volume
43pub_type
杂志文章abstract::During nonpathological aging, quantitative changes occur in the pre- and post-synaptic elements of both the dopamine and serotonin systems. The level of dopamine in the human striatum declines up to 50% with age, while smaller and more variable changes are found in rodent brain (0-30%). Postsynaptically, the density o...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/0278-5846(87)90053-4
更新日期:1987-01-01 00:00:00
abstract::Correlation between specific binding potencies "in vitro" of several benzodiazepines and activities in SCR-habituation test is very satisfactory. As the SCR-habituation test might be considered as an elementary model of anxiety state, the test is suggested to be used as an intermediate psychopharmacological tool befor...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/0278-5846(85)90191-5
更新日期:1985-01-01 00:00:00
abstract::Latent inhibition (LI) is a behavioural paradigm in which repeated exposure to a stimulus without consequence inhibits the formation of any new associations with that stimulus. To the extent that LI reflects a process of leaming to ignore irrelevant stimuli, disrupted LI has been suggested as an animal model for the a...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0278-5846(01)00296-2
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/S0278-5846(03)00026-5
更新日期:2003-04-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2020.110085
更新日期:2020-09-02 00:00:00
abstract::1. In vertebrates as in invertebrates, protein kinase C appears to have a key role in learning and memory, probably given its involvement in synaptic plasticity. 2. Hippocampal PKC in mammalians is activated by learning in a large variety of memory tasks. However, the kind of information processed, the type of task, a...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/s0278-5846(97)00015-8
更新日期:1997-04-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2005.06.011
更新日期:2006-01-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0278-5846(01)00212-3
更新日期:2001-11-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
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更新日期:1995-01-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.pnpbp.2011.03.004
更新日期:2011-06-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2014.06.009
更新日期:2014-10-03 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 临床试验,杂志文章
doi:10.1016/j.pnpbp.2006.01.016
更新日期:2006-06-01 00:00:00
abstract::Lithium carbonate appears to inhibit the development of cocaine-induced behavioral sensitization while it does not inhibit the development of amygdala kindling. Lithium chloride did not inhibit kindled seizures. Carbamazepine does not inhibit cocaine-induced motor activity or the development of behavioral sensitizatio...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2005.04.016
更新日期:2005-07-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2008.05.024
更新日期:2008-08-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2009.03.018
更新日期:2009-06-15 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/0278-5846(90)90002-x
更新日期:1990-01-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2015.01.016
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0278-5846(98)00032-3
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/S0278-5846(03)00145-3
更新日期:2003-08-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/j.pnpbp.2014.05.013
更新日期:2014-10-03 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.pnpbp.2004.06.009
更新日期:2004-12-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 临床试验,杂志文章
doi:10.1016/j.pnpbp.2003.09.022
更新日期:2004-01-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,多中心研究
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更新日期:2010-12-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/0278-5846(93)90018-n
更新日期:1993-11-01 00:00:00
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journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0278-5846(98)00097-9
更新日期:1999-02-01 00:00:00
abstract::In the brains of patients with Alzheimer's disease (AD) signs of neuronal degeneration are accompanied by markers of microglial activation, inflammation, and oxidant damage. The presence of nitrotyrosine in the cell bodies of neurons in AD suggests that peroxynitrite contributes to the pathogenesis of the disease. A d...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/s0278-5846(01)00192-0
更新日期:2001-10-01 00:00:00
abstract::Both normal, non-epileptic as well as seizure-prone rodents exhibit a spectrum of anxiogenic-like behaviors in response to stressor exposure. Comparative analysis reveals that the same set of emotionality dependent measures is sensitive to both stress reactivity in normal rodents as well as stress hyperreactivity typi...
journal_title:Progress in neuro-psychopharmacology & biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/j.pnpbp.2009.11.002
更新日期:2010-06-30 00:00:00