Abstract：
:The present study evaluated whether hypolocomotion elicited by subcutaneous administration of the non-specific 5-HT/preferential 5-HT(2C) receptor agonist mCPP during novelty exposure was due to an enhanced anxiety-like state. The effects of mCPP on exploratory behavior during exposure to a new environment (novelty) were studied in male C57BL/6N mice. Subcutaneous injection of mCPP (1 and 3mg/kg) and the preferential 5-HT(2C) receptor agonist MK212 (0.7 and 1mg/kg) induced hypolocomotion during novelty exposure. The selective 5-HT(2C) receptor antagonist SB242084 (0.3mg/kg) reversed the mCPP-induced hypolocomotion into hyperlocomotion. In contrast, MK212 induced hypolocomotion that was blocked by SB242084, indicating a specific 5-HT(2C) receptor involvement. When injected intracerebroventricularly, mCPP (30microg) elicited hypolocomotion, whereas the same dose mildly increased locomotion when injected into the dorsal hippocampus. Since anxiety affects autonomic functions, effects of mCPP on cardiovascular function were studied by radio-telemetry in the home cage of unrestrained mice. Subcutaneous injection of mCPP (3mg/kg) had no significant effect on heart rate and mean arterial blood pressure. In summary, in view of lack of autonomic effects, and the lack of hypoactivity upon forebrain stimulation, the hypolocomotion induced by systemic mCPP cannot be explained by an enhanced anxiety-like state.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Stiedl O,Misane I,Koch M,Pattij T,Meyer M,Ogren SOdoi
10.1016/j.neuropharm.2006.10.012subject
Has Abstractpub_date
2007-03-01 00:00:00pages
949-57issue
3eissn
0028-3908issn
1873-7064pii
S0028-3908(06)00365-0journal_volume
52pub_type
杂志文章abstract：:The NMDA receptor is a major target of alcohol action in the CNS, and recent behavioral and cellular studies have pointed to the importance of the GluN2B subunit in alcohol action. We and others have previously characterized four amino acid positions in the third and fourth membrane-associated (M) domains of the NMDA ...
journal_title：Neuropharmacology
pub_type： 杂志文章
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journal_title：Neuropharmacology
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journal_title：Neuropharmacology
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journal_title：Neuropharmacology
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pub_type： 杂志文章
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(91)90125-u
更新日期：1991-08-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2014.07.001
更新日期：2014-11-01 00:00:00
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journal_title：Neuropharmacology
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更新日期：2019-05-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
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journal_title：Neuropharmacology
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journal_title：Neuropharmacology
pub_type： 杂志文章
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更新日期：2014-08-01 00:00:00
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journal_title：Neuropharmacology
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(98)00056-2
更新日期：1998-04-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
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更新日期：1995-05-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2013.08.029
更新日期：2014-02-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2004.04.016
更新日期：2004-09-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(94)90170-8
更新日期：1994-05-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(88)90138-4
更新日期：1988-05-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(93)90127-o
更新日期：1993-01-01 00:00:00
abstract：:The obesity epidemic is one of the biggest health challenges globally and rates have tripled since 1975. Overeating is the largest determinant of obesity, yet little is understood of the neural mechanisms underlying why individuals consume food regardless of satiety. The lateral hypothalamic (LH) input to the ventral ...
journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2019.05.014
更新日期：2019-08-01 00:00:00
