Abstract:
:The δ subunit of the GABAAR is highly expressed in the dentate gyrus of the hippocampus where it mediates a tonic extrasynaptic inhibitory current that is sensitive to neurosteroids. In female mice, the expression level of the δ subunit within the dentate gyrus is elevated in the diestrous relative to estrous phase of the estrous cycle. Previous work in our lab found that female δ-GABAAR KO mice showed enhanced hippocampus-dependent trace but normal hippocampus-independent delay fear conditioning. Wild-type females in this study showed a wide range of freezing levels, whereas δ-GABAAR KO mice expressed only high levels of fear. We hypothesized that the variability in the wild-type mice may have been due to estrous cycle-mediated changes in the expression of the δ-GABAAR, with low levels of freezing in mice that were in the diestrous phase when dentate gyrus tonic inhibition is high. In the present study we tested this hypothesis by utilizing contextual, delay, and trace fear conditioning protocols in mice that were trained and tested in either the diestrous or estrous phases. Consistent with our hypothesis, we found a significant impairment of hippocampus-dependent learning and memory during diestrus relative to estrus in wild-type mice and this impairment was absent in δ-GABAAR mice. These findings argue that the δ-GABAAR plays an important role in estrous cycle-mediated fluctuations in hippocampus-dependent learning and memory.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Cushman JD,Moore MD,Olsen RW,Fanselow MSdoi
10.1007/s11064-014-1282-6subject
Has Abstractpub_date
2014-06-01 00:00:00pages
1140-6issue
6eissn
0364-3190issn
1573-6903journal_volume
39pub_type
杂志文章abstract::Brain regional 5-HT (5-hydroxytryptamine) and 5-HIAA (5-hydroxyindole-3-acetic acid) concentrations in male LE rats at three times were measured by a fluorescence method, to evaluate effects of intracranial surgery and administration of melatonin on the changes in these compounds during the first part of the dark phas...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00965929
更新日期:1989-10-01 00:00:00
abstract::The nerve agent VX has a variable and delayed absorption through the skin, which may have implications for treatment regimens. In the present study, central and peripheral effects of percutaneous VX intoxication were investigated in hairless guinea pigs. Although onset times of clinical signs varied considerably, the ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-007-9508-5
更新日期:2008-02-01 00:00:00
abstract::Charge microheterogeneity of myelin basic protein is known to affect its conformation and function. Here, the citrullinated myelin basic protein charge isomer, component-8, was shown to be more susceptible to stromelysin-1 cleavage than myelin basic protein component-1. Since levels of component-8 are increased in mul...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-006-9116-9
更新日期:2006-08-01 00:00:00
abstract::Glutamate is the primary excitatory neurotransmitter in brain. By stimulating neuronal activity, glutamate increases cellular energy utilization, enhances ATP hydrolysis and promotes the formation of adenosine. Adenosine has receptor-mediated effects that reduce or oppose the excitatory effects of glutamate. As a poss...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1014955111742
更新日期:2002-04-01 00:00:00
abstract::Due to the biological importance of sodium and its relative scarcity within many natural environments, 'salt appetite' has evolved whereby dietary salt is highly sought after and palatable when tasted. In addition to peripheral responses, salt depletion is detected within the brain via circumventricular organs and 11β...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1007/s11064-017-2336-3
更新日期:2018-01-01 00:00:00
abstract::Under some pathological conditions in brain, a large amount of superoxide anion (O(2)(-)) is produced, causing various cellular damages. Among three isozymes of superoxide dismutase (SOD), extracellular (EC)-SOD should play a role to detoxify O(2)(-) in extracellular space; however, a little is known about EC-SOD in b...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-012-0882-2
更新日期:2013-01-01 00:00:00
abstract::Acetate is a two carbon intermediate in metabolism. It is an accepted marker of astrocytic metabolism, and a substrate for production of metabolites such as glutamine, glutamate and GABA. However, anomalies exist in the current explanations of compartmentation and metabolism of acetate. Here, we investigated these ano...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1007/s11064-012-0847-5
更新日期:2012-11-01 00:00:00
abstract::In our previous study vesamicol, an inhibitor of the acetylcholine transporter of the cholinergic vesicles, inhibited veratridine-evoked external Ca(2+)-dependent acetylcholine release from striatal slices but did not influence acetylcholine release observed in Ca(2+)-free medium (4). Here we examined if the effect of...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00968780
更新日期:1992-06-01 00:00:00
abstract::The neurotoxic effects of aluminum are generally associated with reduced antioxidant capacity, increased oxidative stress and apoptosis, which lead to the induction of neurodegenerative processes. Curcumin has a lipophilic polyphenol character and effects of antioxidant and anti-apoptotic. The present study was undert...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-019-02839-9
更新日期:2019-08-01 00:00:00
abstract::The primary objective of this investigation was to assess the neuroprotective efficacy of spice active principles namely Eugenol (Eug) and isoeugenol (IE) in an acrylamide (ACR) neuropathy model in rats. In the present study, ACR administration (50 mg/kg bw, i.p. 3 times/week) for 5 weeks to growing rats caused typica...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-012-0924-9
更新日期:2013-02-01 00:00:00
abstract::Overactivation of glutamate receptors results in neurodegeneration in a variety of brain pathologies, including ischemia, epilepsy, traumatic brain injury and slow-progressing neurodegenerative disorders. In all these pathologies, it is well accepted that the calcium-dependent cysteine proteases calpains are key playe...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-010-0323-z
更新日期:2010-12-01 00:00:00
abstract::The present study examined the potential membrane retention of desipramine (DMI) following exposures of 293-hNET cells to DMI, and its effect on [3H]NE uptake. Incubation of cells with 500 nM DMI for 1 h or 1 day persistently inhibited the uptake of [3H]NE up to 7 days, despite daily repeated washing of cells with dru...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/b:nere.0000013747.04964.46
更新日期:2004-02-01 00:00:00
abstract::The characteristics and properties of the increase in cytosolic [Ca2+] that occurs in bovine adrenal medullary chromaffin cells on exposure to angiotensin 11 have been investigated. In fura-2 loaded cells exposure to a maximally effective concentration of angiotensin II (100 nM) caused a rapid, but transient increase ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1024987128090
更新日期:2003-09-01 00:00:00
abstract::Several studies showed that the up-regulation of glial glutamate transporter-1 (GLT-1) participates in the acquisition of brain ischemic tolerance induced by cerebral ischemic preconditioning or ceftriaxone pretreatment in rats. To explore whether GLT-1 plays a role in the acquisition of brain ischemic tolerance induc...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-011-0639-3
更新日期:2012-03-01 00:00:00
abstract::Selective blockade of a subset of GABA(A) receptors may be involved in the antipsychotic effects of Clozapine and several other antipsychotic drugs. Seven antipsychotic drugs, and 11 drugs classified as antidepressants that only partially reverse the inhibitory effect of 1 microM GABA on [35S]TBPS binding, do not yiel...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1027359422433
更新日期:1997-02-01 00:00:00
abstract::The characteristics of endogenous Ca2+/calmodulin (CaM)- and Ca2+/phosphatidylserine (PS)-stimulated phosphorylated proteins in the striatum of rat were partially determined and compared in this study. The Ca2+/CaM-dependent phosphoproteins were associated with serine and threonine residues. The sensitivity of these p...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00968670
更新日期:1990-03-01 00:00:00
abstract::Role of the orexinergic system in pain modulation is well studied and involvement of the spinal orexin-1 receptors is well documented. In this study, we examined role of the spinal orexin-2 receptors in modulation of inflammatory pain in rat. Fifty-one adult male Wistar rats were implanted unilaterally with a guide ca...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-019-02749-w
更新日期:2019-05-01 00:00:00
abstract::The objective of the present study was to investigate the effects of senescence on the binding characteristics of muscarinic receptors by using [3H]quinuclidinyl benzilate ([3H]QNB) and [3H]N-methylscopolamine ([3H]NMS) as ligands in young (3 months), middle-age (10 months) and old (24 months) male Fischer 344 rats. M...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00971637
更新日期:1988-12-01 00:00:00
abstract::Chronic acrylamide (ACR) exposure induces peripheral-central axonopathy in occupational workers and laboratory animals, but the underlying mechanisms remain unclear. In this study, we first investigated the effects of ACR on slow axonal transport of neurofilaments in cultured rat dorsal root ganglia (DRG) neurons thro...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-015-1782-z
更新日期:2016-05-01 00:00:00
abstract::Brains of Alzheimer disease patients in early stages of dementia contain an increased 24(S)-hydroxycholesterol (cerebrosterol)/cholesterol ratio when compared to controls. In this study, effects of amyloid beta peptides and of racemic 24-hydroxycholesterol were evaluated in vitro on undepleted or cholesterol-depleted ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-007-9443-5
更新日期:2008-03-01 00:00:00
abstract::The influence of hypothyroidism (HO) induced by treatment with propylthiouracil on lipid composition, receptor responsiveness of M1-muscarinic receptors (M1AChRs) and metabotropic glutamate receptors (mGluRs) as well as on protein kinase C (PKC) activity was investigated in the cerebral cortex of Lewis rats. HO did no...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF02527750
更新日期:1996-05-01 00:00:00
abstract::MicroRNAs (miRNAs), an abundant class of small noncoding RNA molecules, which regulate gene expression by functioning as post-transcriptional regulatory factors, have been identified as key components of traumatic brain injury (TBI) progression. MicroRNA-21 (miR-21) is a recently identified typical miRNA that is invol...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1007/s11064-018-2602-z
更新日期:2018-10-01 00:00:00
abstract::A variety of naturally occurring amino acids, their isomers, and synthetic analogs were tested for their ability to inhibit uptake of [3H]glutamate into presynaptic vesicles from bovine cerebral cortex. Strongest inhibition (Ki < 1mM) was observed for trans-1-aminocyclopentane-1,3-dicarboxylic acid (t-ACPD) and erythr...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00966925
更新日期:1993-01-01 00:00:00
abstract::Malignant peripheral nerve sheath (MPNST) cell lines derived from patients with neurofibromatosis type 1 (NF!) were found to have basal cAMP levels which are two-fold higher than cAMP levels in normal human adult Schwann cells (nHSC). PCR analysis also revealed that normal adult human Schwann cells express mRNA for ty...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-011-0433-2
更新日期:2011-09-01 00:00:00
abstract::Dual-specificity tyrosine-regulated kinase 2 (DYRK2), a protein kinase that phosphorylates its substrates on serine/threonine, is expressed in numerous human tumors, but little is known about its role in the pathophysiology of glioma. In this study, we made an effort to explore the expression and function in human gli...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-017-2345-2
更新日期:2017-11-01 00:00:00
abstract::In this report data are summarized on changes in the quantity of proteolipid protein (PLP), its amino acid composition, and the lipid moiety of these lipid-protein complexes in rat brain during postnatal development. In all three parts of the central nervous system (CNS) studied (cerebral hemispheres, medulla oblongat...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:
更新日期:1985-11-01 00:00:00
abstract::Tumor Necrosis Factor Receptor Super Family 6 gene (TNFRSF6), also known as FAS, encodes the Fas antigen, a cell surface receptor mediating cell apoptosis, situated on chromosome 10q located near the region of linkage to sporadic Alzheimer's disease (sAD). FAS levels have been reported elevated in the brain of AD pati...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-007-9329-6
更新日期:2007-09-01 00:00:00
abstract::Pyridostigmine bromide (PB), an inhibitor of acetylcholinesterase, has been used as a prophylactic for nerve gas poisoning. N,N'-diethyl-m-toluamide (DEET) is the active ingredient in most insect repellents and is thought to interact synergistically with PB. Since PB can inhibit the binding of organophosphates to tubu...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1007527129743
更新日期:2000-01-01 00:00:00
abstract::Attempts were made to solubilize acetylcholinesterase (AChE) from microsomal membranes isolated from rabbit white muscle. The preparative procedure included a step in which the microsomes were incubated in a solution containing high salt concentration (0.6 M KCl). About 15% of the total enzyme activity could be solubi...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00971007
更新日期:1987-07-01 00:00:00
abstract::Antidepressive drugs offer considerable symptomatic relief in mood disorders and, although commonly discovered by screening with single biological targets, most interact with multiple receptors and signaling pathways. Antidepressants require a treatment regimen of several weeks before clinical efficacy is achieved in ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-005-8513-9
更新日期:2005-11-01 00:00:00