Abstract：
:GABAergic dysfunction is implicated in hippocampal deficits of the Ts65Dn mouse model of Down syndrome (DS). Since Ts65Dn mice overexpress G-protein coupled inward-rectifying potassium (GIRK2) containing channels, we sought to evaluate whether increased GABAergic function disrupts the functioning of hippocampal circuitry. After confirming that GABA(B)/GIRK current density is significantly elevated in Ts65Dn CA1 pyramidal neurons, we compared monosynaptic inhibitory inputs in CA1 pyramidal neurons in response to proximal (stratum radiatum; SR) and distal (stratum lacunosum moleculare; SLM) stimulation of diploid and Ts65Dn acute hippocampal slices. Synaptic GABA(B) and GABA(A) mediated currents evoked by SR stimulation were generally unaffected in Ts65Dn CA1 neurons. However, the GABA(B)/GABA(A) ratios evoked by stimulation within the SLM of Ts65Dn hippocampus were significantly larger in magnitude, consistent with increased GABA(B)/GIRK currents after SLM stimulation. These results indicate that GIRK overexpression in Ts65Dn has functional consequences which affect the balance between GABA(B) and GABA(A) inhibition of CA1 pyramidal neurons, most likely in a pathway specific manner, and may contribute to cognitive deficits reported in these mice.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Best TK,Cramer NP,Chakrabarti L,Haydar TF,Galdzicki Zdoi
10.1016/j.expneurol.2011.11.033subject
Has Abstractpub_date
2012-02-01 00:00:00pages
749-57issue
2eissn
0014-4886issn
1090-2430pii
S0014-4886(11)00437-7journal_volume
233pub_type
杂志文章abstract：:The Alzheimer's disease-related peptide beta(1-40) amyloid self-associates to form fibrils exhibiting a morphology characteristic of amyloidogenic proteins. The mechanism of this fibrillization process has yet to be fully elucidated. In this study we have immobilized the beta(1-40) amyloid to flat gold surfaces using ...
journal_title：Experimental neurology
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journal_title：Experimental neurology
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journal_title：Experimental neurology
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journal_title：Experimental neurology
pub_type： 杂志文章
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journal_title：Experimental neurology
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journal_title：Experimental neurology
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journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：1990-04-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章,评审
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journal_title：Experimental neurology
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journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：1983-02-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2011.12.045
更新日期：2012-04-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：1989-05-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1993.1041
更新日期：1993-03-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2011.06.008
更新日期：2012-02-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2009.09.003
更新日期：2009-12-01 00:00:00
abstract：:The anticonvulsant long-term efficacy of diazepam was studied in amygdala-kindled rats. The drug was administered three times daily at doses of 5 mg/kg i.p. for 2 weeks in fully kindled animals. The severity of the kindled seizures was markedly reduced throughout the period of treatment, while tolerance developed to t...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(85)90026-3
更新日期：1985-11-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1993.1018
更新日期：1993-02-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2009.11.009
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journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2004.01.020
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journal_title：Experimental neurology
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journal_title：Experimental neurology
pub_type： 临床试验,杂志文章
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journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：1986-11-01 00:00:00
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journal_title：Experimental neurology
pub_type： 杂志文章
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journal_title：Experimental neurology
pub_type： 杂志文章
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journal_title：Experimental neurology
pub_type： 杂志文章
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journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：2012-01-01 00:00:00
abstract：:Dopamine (DA) affects GABA neuronal function in the striatum and together these neurotransmitters play a large role in locomotor function. We recently reported that unilateral striatal administration of GDNF, a growth factor that has neurotrophic effects on DA neurons and enhances DA release, bilaterally increased str...
journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：2009-09-01 00:00:00
abstract：:Accumulating evidence shows alterations in the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB) in ALS patients and in animal models of disease, mainly by endothelial cell (EC) damage. Repair of the altered barrier in the CNS by replacement of ECs via cell transplantation may be a new therapeutic approac...
journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：2018-12-01 00:00:00
abstract：:Cinnamophilin (CINN, (8R, 8'S)-4, 4'-dihydroxy-3, 3'-dimethoxy-7-oxo-8, 8'-neolignan) protects against ischemic stroke in mice. While some anti-oxidative effects of CINN have been characterized, its therapeutic window and molecular basis for neuroprotection remain unclear. We evaluated antioxidant and anti-inflammator...
journal_title：Experimental neurology
pub_type： 杂志文章
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更新日期：2009-05-01 00:00:00
