Abstract:
:Ovariectomized rats were hormonally primed with 10 microg estradiol benzoate or with estradiol benzoate plus 500 microg progesterone. Rats received a bilateral infusion with 200 ng of the 5-HT(1B/1D) receptor antagonist, N-[4-methoxy-3-(4-methyl-1-piperazinyl)phenyl]-2'-methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)-1-1'-biphenyl-4-carboxamide hydrochloride (GR 127935), into the ventromedial nucleus of the hypothalamus (VMN), followed by a 5 min restraint or home cage experience. In estrogen-primed females that had experienced minimal handling between ovariectomy and use in the experiment, infusion with the water vehicle transiently inhibited lordosis behavior, and the 5-HT(1B/1D) receptor antagonist amplified this inhibition. There were no effects in rats hormonally primed with estrogen and progesterone. Handling for two days before the experiment reduced the effects of the infusions in estrogen-primed rats. However, when a 5 min restraint experience followed infusion with GR 127935, there was a significant decline in lordosis behavior that persisted for 10 to 15 min after the experience. Regardless of the prior experience or type of infusion, the addition of progesterone to the hormonal priming completely prevented the lordosis inhibition. These findings are consistent with prior evidence that progesterone protects against the inhibitory effects of a 5 min restraint experience on lordosis behavior. Moreover, these are the first experiments to demonstrate an inhibitory effect of a selective 5-HT(1B/1D) receptor antagonist in the VMN on lordosis behavior of estrogen primed, but not estrogen and progesterone primed, ovariectomized rats.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Uphouse L,Hiegel C,Guptarak J,Maswood Ndoi
10.1016/j.yhbeh.2008.09.011subject
Has Abstractpub_date
2009-01-01 00:00:00pages
169-74issue
1eissn
0018-506Xissn
1095-6867pii
S0018-506X(08)00273-0journal_volume
55pub_type
杂志文章abstract::Despite decades of laboratory research and clinical trials, a safe and effective treatment for traumatic brain injury (TBI) has yet to be put into successful clinical use. I suggest that much of the problem can be attributed to a reductionist perspective and attendant research strategy directed to finding or designing...
journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
doi:10.1006/hbeh.2002.1824
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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更新日期:1986-06-01 00:00:00
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journal_title:Hormones and behavior
pub_type: 杂志文章
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
doi:10.1016/j.yhbeh.2011.11.001
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
pub_type: 杂志文章,评审
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journal_title:Hormones and behavior
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doi:10.1006/hbeh.2000.1627
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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journal_title:Hormones and behavior
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