Abstract：
:Postpartum female rats exhibit a suppression of anxiety-related behaviors when compared to diestrous virgin females, pregnant females, and males. This blunted anxiety promotes optimal maternal care and involves elevated GABA neurotransmission, possibly including greater density of GABA(A) and benzodiazepine receptors in the postpartum brain. We here examined autoradiographic binding of [(3)H]muscimol to measure the total population of GABA(A) receptors and [(3)H]flunitrazepam to assess density of benzodiazepine sites in the medial prefrontal cortex, bed nucleus of the stria terminalis, amygdala, hippocampus, and periaqueductal gray of female rats sacrificed on day 7 postpartum, day 10 of pregnancy, or as diestrous virgins. A group of sexually naïve male rats was also included. We found that [(3)H]muscimol binding did not differ among groups in any site but that diestrous virgin females had greater [(3)H]flunitrazepam binding in the CA1 and dentate gyrus of the hippocampus compared to mid-pregnant females and males. Notably, postpartum and diestrous virgin females did not significantly differ in binding of either ligand in any site examined. This is the first study to evaluate the densities of GABA(A) and benzodiazepine binding sites simultaneously across three female reproductive states and sex with a focus on brain sites influencing anxiety-related behaviors. The results suggest that changes in other GABA(A) receptor characteristics such as subunit composition, or increased presynaptic GABA release during interactions with offspring, must instead play a greater role in the postpartum suppression of anxiety in laboratory rats.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Miller SM,Lonstein JSdoi
10.1016/j.brainresbull.2011.05.013subject
Has Abstractpub_date
2011-08-10 00:00:00pages
60-4issue
1-2eissn
0361-9230issn
1873-2747pii
S0361-9230(11)00177-8journal_volume
86pub_type
杂志文章abstract：:During a single-step visual tracking task of monkeys, parametric changes of the wrist extension-flexion movement and related discharge rate changes of pyramidal tract neurons (PTNs) of hand-arm motor area were studied. The task consisted of preparatory, precontraction, contraction and target periods. If the displaceme...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(79)90289-2
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.03.001
更新日期：2011-05-30 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.02.028
更新日期：2008-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.07.006
更新日期：2004-09-30 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.09.009
更新日期：2005-01-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90148-5
更新日期：1984-06-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90045-1
更新日期：1987-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(89)90112-3
更新日期：1989-03-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0361-9230(93)90093-q
更新日期：1993-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(97)00199-8
更新日期：1997-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00238-5
更新日期：2000-03-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.02.006
更新日期：2011-04-25 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(03)00042-x
更新日期：2003-05-15 00:00:00
abstract：OBJECTIVE:To establish a link between tryptophan (a precursor for 5-hydroxytryptamine (5-HT) or serotonin, involved in sleep and fatigue) and post-operative fatigue after major surgery. BACKGROUND:There is a link between tryptophan (the precursor for the neurotransmitter 5-hydroxytryptamine), and its competitive bindi...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(03)00021-2
更新日期：2003-04-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2015.08.001
更新日期：2015-08-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90053-9
更新日期：1983-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(02)00750-5
更新日期：2002-04-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
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更新日期：2012-03-10 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.11.012
更新日期：2006-03-31 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
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更新日期：1992-12-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90124-1
更新日期：1982-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2017.04.012
更新日期：2017-05-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90066-9
更新日期：1987-11-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90133-5
更新日期：1988-04-01 00:00:00
abstract：:Diminished sensitivity to kainic acid (KA) lesioning action is present in the hippocampus of the lactating dam. Given that KA can alter blood-brain barrier (BBB) permeability, we investigated whether lactation would protect BBB permeability after treatment with this neurotoxin. Adult virgin or lactating (13-15 days pp...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2018.11.020
更新日期：2019-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.02.028
更新日期：2005-05-30 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90170-3
更新日期：1983-09-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2007.10.008
更新日期：2008-03-28 00:00:00
abstract：:The inhibition of excitatory mechanisms by components of low molecular weight, isolated from spiders and solitary wasps, such as, the acyl-polyamines, has demonstrated, on the one hand, neuroprotection potential, and on the other hand, it is well known that some arthropod venom components have convulsant activity. Whi...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(00)00300-2
更新日期：2000-08-01 00:00:00
abstract：:The present study in piglets was designed to examine cerebrovascular effects of tumor necrosis factor-alpha (TNF alpha) and potential mechanisms involved. Anesthetized new-born pigs with closed cranial windows implanted were used. Effects of nitric oxide synthase (NOS) inhibitors, NG-nitro-L-arginine (L-NNA) and amino...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(95)02142-6
更新日期：1996-01-01 00:00:00
