Abstract:
:The GTP binding proteins Rhes and AGS1/Dexras1 define a subfamily of the Ras superfamily and have been shown to affect signaling by G-protein-coupled receptors. We tested the effects of both proteins at an early stage of signaling by dopamine receptors, activation of adenylyl cyclase. Rhes decreased dopamine D1 receptor agonist-stimulated cAMP accumulation in a pertussis toxin-sensitive manner. It had no effect on cAMP accumulation in the absence of agonist. AGS1/Dexras1, on the other hand, decreased cAMP accumulation in both vehicle-treated and agonist-treated cells, resulting in a higher percentage of stimulation by agonist or a higher signal-to-noise ratio. The effects of AGS1/Dexras1 on cAMP accumulation were not blocked by pertussis toxin, suggesting that it may produce these effects through interaction with a G(α) i monomer. Both Rhes and AGS1/Dexras1 were associated with GTP-bound G(α) i in pull-down assays. However, Rhes had no effect on the ability of activated D2 receptor to inhibit cAMP. Neither Rhes nor AGS1/Dexras1 interacted with the D1 receptor in pull-down assays. These findings show that, in addition to its well-known effects on signaling through Gi-coupled receptors, AGS1/Dexras1 can affect signaling through a Gs/olf-coupled receptor. Furthermore, the results suggest that Rhes exerts some of its effects by interacting with G(α) i.
journal_name
J Neurosci Resjournal_title
Journal of neuroscience researchauthors
Harrison LM,He Ydoi
10.1002/jnr.22604subject
Has Abstractpub_date
2011-06-01 00:00:00pages
874-82issue
6eissn
0360-4012issn
1097-4547journal_volume
89pub_type
杂志文章abstract::In a number of pathological states of the brain, the activation of the inducible nitric oxide synthase (iNOS) plays a major role. Interleukin (IL)-1beta is believed to be an essential factor in the induction of iNOS. However, little is known about the cascade of events culminating in iNOS expression in vivo. To identi...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:
更新日期:1999-08-01 00:00:00
abstract::Following the identification of the nociceptin/orphanin FQ (N/OFQ) peptide (NOP) as an endogenous ligand for the NOP receptor, ample evidence has revealed unique functional profiles of the N/OFQ-NOP receptor system. NOP receptors are expressed in key neural substrates involved in pain and reward modulation. In nonhuma...
journal_title:Journal of neuroscience research
pub_type: 杂志文章,评审
doi:10.1002/jnr.24624
更新日期:2020-04-07 00:00:00
abstract::The effects of treatment with a high dose of nandrolone or testosterone on nerve growth factor (NGF) levels and NGF low-affinity receptor (p75-NGFr) distribution in the brain were analyzed. Nandrolone, subcutaneously injected in rats for several weeks, caused an increase of NGF levels in the hippocampus and septum and...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/(sici)1097-4547(19970115)47:2<198::aid-jnr
更新日期:1997-01-15 00:00:00
abstract::The effects of bilateral lesions of the ventral noradrenergic bundle (VNA) were studied in male rats. In contrast to data reported by others, hyperphagia and obesity were not observed following VNA lesions. Indeed, except for a depression during the first three postoperative days, food intake (FI) of the VNA lesioned ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490020305
更新日期:1976-01-01 00:00:00
abstract::Corticosteroids, released from the adrenal gland in response to stress, bind to receptors that act as transcription factors to alter gene expression and, subsequently, protein synthesis. Using [(35)S]-methionine-cysteine incorporation to measure protein synthesis in hippocampal slices incubated under ischemic conditio...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.1159
更新日期:2001-08-15 00:00:00
abstract::Primary cultures of cerebral glia derived from neonatal rat brain were utilized to determine 1) the developmental changes of dolichol-linked oligosaccharide and N-linked glycoprotein biosyntheses, 2) the enzymatic correlates of these developmental changes, and 3) the temporal relations between the biosyntheses of doli...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490200409
更新日期:1988-08-01 00:00:00
abstract::Increasing evidence suggests that the regulation of neuronal cell death is complex. In this study we compared the neurotoxic effects of tumor necrosis factor-alpha (TNFalpha), nitric oxide, and thrombin on primary rat cortical cell cultures and the neuronal PC12 cell line. Release of lactate dehydrogenase (LDH) and th...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.1119
更新日期:2001-06-15 00:00:00
abstract::The inflammatory response initiated after spinal cord injury (SCI) is characterized by the accumulation of macrophages at the impact site. Monocyte chemoattractant protein-1 (MCP-1) is a strong candidate for mediating chemotaxis of monocytes to the injured nervous system. To help in defining the role of MCP-1 in infla...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.10269
更新日期:2002-06-15 00:00:00
abstract::The effects of glucose and O2 deprivation (OGD) on the survival of cortical and cerebellar neurons were examined to characterize the biochemical mechanisms involved in OGD and OGD followed by reoxygenation. To this aim, neurons were kept for different time periods in a hypoxic chamber with a controlled atmosphere of 9...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/1097-4547(20010101)63:1<20::AID-JNR3>3.0.C
更新日期:2001-01-01 00:00:00
abstract::Neural stem cells reside in defined areas of the adult mammalian brain, including the dentate gyrus of the hippocampus. Rat neural stem/progenitor cells (NSPCs) isolated from this region retain their multipotency in vitro and in vivo after grafting into the adult brain. Recent studies have shown that endogenous or gra...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.21044
更新日期:2006-11-15 00:00:00
abstract::This paper describes a novel technique to identify and study neurons that express specific mRNAs. The method is called Live FISH because it is like fluorescent in situ hybridization (FISH) but can be applied to living tissues. In Live FISH, molecular beacons, which fluoresce only in the presence of the complementary m...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.22191
更新日期:2010-01-01 00:00:00
abstract::The metabolism of glutamate, the most likely neurotransmitter of vestibular ganglion cells, includes synthesis from glutamine by the enzyme glutaminase. We used microdissection combined with a fluorometric assay to measure glutaminase activity in the vestibular nerve root and nuclei of rats with unilateral vestibular ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.20179
更新日期:2004-08-15 00:00:00
abstract::The effect of neonatal hyperthyroidism produced by injection of tri-iodothyronine (T3) on myelination and on the microperoxisomal population of the brain was studied in young rats. Data on the lipid composition of myelin show that myelinogenesis starts earlier in treated animals. In coincidence with the early appearan...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490250312
更新日期:1990-03-01 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a progressive and fatal disease caused by the selective death of motor neurons. Between 5% and 10% of ALS patients have a genetically inherited form of the disease known as familial ALS (FALS), and approximately 20% of FALS patients have mutations in the SOD1 gene. Although the m...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.21902
更新日期:2009-03-01 00:00:00
abstract::A distinct population of white matter progenitor cells (WMPCs), competent but not committed to generate oligodendrocytes, remains ubiquitous in the adult human subcortical white matter. These cells are present in both sexes and into senescence and may constitute as much as 4% of the cells of adult human capsular white...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.10397
更新日期:2002-09-15 00:00:00
abstract::Most previous studies on spinal cord injury (SCI) have used rodent models. Direct extrapolation of the results obtained in rodents to clinical cases is difficult, however, because of neurofunctional and anatomic differences between rodents and primates. In the present study, the development of histopathologic changes ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.20435
更新日期:2005-04-15 00:00:00
abstract::Photopic L-type responses were recorded from the soma and the axon terminal of horizontal cells of the catfish (Ictalurus punctatus) retina in eye-cup preparations. The responses were produced by a spot of light with 100-micron diameter (intensity, 10 microW/cm2), which was flashed or steadily illuminated and swept al...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490110405
更新日期:1984-01-01 00:00:00
abstract::The non-receptor protein tyrosine kinase Fyn, which is a member of the Src family of kinases, has been shown to be essential for normal myelination and has been suggested to play a role in oligodendrocyte development. However, oligodendrocyte development has not been studied directly in cells lacking Fyn. Additionally...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/1097-4547(20010215)63:4<303::AID-JNR1024>3
更新日期:2001-02-15 00:00:00
abstract::Systemic osmotic homeostasis is regulated mainly by neuroendocrine system of arginine-vasopressin (AVP) in mammalians. In the present study, we demonstrated that the immunoreactivity of tissue plasminogen activator (tPA) was observed specifically at neurosecretory granules of AVP-positive magnocellular terminals and t...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.22370
更新日期:2010-07-01 00:00:00
abstract::In the embryonic and postnatal rat retina a cell surface antigen that is detected by monoclonal antibody JONES is distributed in a dorsoventral gradient. Biochemical analysis has determined that the antigen is a modified ganglioside, 9-O-acetyl GD3. In the present study, the distributions of 9-O-acetyl GD3 and its pos...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490210231
更新日期:1988-10-01 00:00:00
abstract::Synaptic circuitry in the upper dorsal horn, disorganized due to transganglionic degenerative atrophy (evoked by blockade of retrograde axoplasmic transport in the related peripheral nerve), begins to be reestablished by a process of regenerative synaptoneogenesis as soon as retrograde transport is resumed. Central ax...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490220110
更新日期:1989-01-01 00:00:00
abstract::Increasing evidence has shown that β-amyloid (Aβ) induces hyperphosphorylation of tau and contributes to Aβ toxicity. Recently, tau hyperphosphorylation by glycogen synthase kinase-3β (GSK-3β) activation has been emphasized as one of the pathogenic mechanisms of Alzheimer's disease (AD). The phosphoinositide 3 kinase ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.22563
更新日期:2011-03-01 00:00:00
abstract::Parkinson's disease (PD) is a movement disorder characterized by a progressive loss of nigrostriatal dopaminergic neurons. Microglia activation and neuroinflammation have been associated with the pathogenesis of PD. Indeed, cytokines have been proposed as candidates that mediate the apoptotic cell death of dopaminergi...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.21503
更新日期:2008-02-01 00:00:00
abstract::The structures associated with learning and memory have been widely studied for over 100 years. The idea of the famous neuropsychologist K.S. Lashley, that learning and memory are stored diffusely in the brain, dominated neuroscience in the early half of Twentieth Century. Since Scoville reported in 1957 a persistent ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章,评审
doi:10.1002/jnr.10545
更新日期:2003-03-01 00:00:00
abstract::Alcohol consumption is largely associated with alterations in the extracellular glutamate concentrations in several brain reward regions. We recently showed that glutamate transporter 1 (GLT-1) is downregulated following chronic exposure to ethanol for 5 weeks in alcohol-preferring (P) rats and that upregulation of th...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.23554
更新日期:2015-06-01 00:00:00
abstract::Germinal matrix (GM) vasculature is selectively vulnerable to hemorrhage in premature infants during the first 48 hr of life. This is attributed to rapid angiogenesis of this brain region, resulting in formation of nascent vessels that show a paucity of pericytes and immaturity of extracellular matrix. Integrins are k...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.22301
更新日期:2010-05-01 00:00:00
abstract::Using a solution-hybridization assay and specific oligonucleotidic probes, we have studied IGF-I and insulin receptor mRNAs in the rat central nervous system during development. The expression of mRNAs was maximal at embryonic day 15 and 20 for IGF-I receptors, and at embryonic day 20 and the day of birth for insulin ...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490280212
更新日期:1991-02-01 00:00:00
abstract::This investigation explores the central nervous system protein-synthetic responses to hemisection of the spinal cord. Adult male rats hemisected at mid T2 were given intravenous injections of 14C-leucine at 0.7, 30, or 70 days postoperative. Four hours later the T1, T2, T3, and C6 segments of the spinal cord and right...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:10.1002/jnr.490010107
更新日期:1975-01-01 00:00:00
abstract::Damselfish neurofibromatosis is a naturally occurring disease of a tropical marine fish species. Affected fish exhibit peripheral nerve sheath tumors which contain morphologically abnormal Schwann cells (SC), similar to tumors encountered in the human disease neurofibromatosis type 1. Unitary A-type K channels in cell...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:
更新日期:1997-05-15 00:00:00
abstract::Previously we reported the amplification of the peripheral myelin protein 22 (PMP22) gene in cell lines of human osteogenic and glioma tumors. PMP22 normally is expressed at high levels in Schwann cells of the peripheral nervous system and is suggested to function as a structural protein of the myelin sheath. One of t...
journal_title:Journal of neuroscience research
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00