Abstract:
:Adrenergic modulation of glutamatergic spontaneous miniature excitatory postsynaptic currents (mEPSCs) was investigated in mechanically dissociated rat ventromedial hypothalamic (VMH) neurons using a conventional whole-cell patch clamp technique. Noradrenaline (NA) reversibly increased mEPSC frequency without affecting the current amplitude in a concentration-dependent manner, indicating that NA acts presynaptically to facilitate the probability of spontaneous glutamate release. NA (10 microM) action on glutamatergic mEPSC frequency was completely blocked by 1 microM ICI-188551 [(+/-)-1-[2,3-(dihydro-7-methyl-1H-inden-4-yl)oxy]-3-[(1-methyl-ethyl)amino]-2-butanol], a selective beta(2)-adrenoceptor antagonist, and mimicked by 1 microM formoterol, a selective beta(2)-adrenoceptor agonist. Neither alpha-adrenoceptor nor beta(1)-adrenoceptor blockers affected the NA-induced increase in mEPSC frequency. NA action on glutamatergic mEPSC frequency was completely occluded in the presence of either 10 microM forskolin, an adenylyl cyclase (AC) activator, or blocked by 1 microM SQ22536 [9-(tetrahydro-2-furanyl)-9H-purin-6-amine], a selective AC inhibitor. Furthermore, the NA-induced increase in mEPSC frequency was completely attenuated by either 1 muM KT5720 or 1 microM H-89 (N-[2-(p-bromocinnamylamino)ethyl]-5-isoquinolinesulfonamide), specific PKA inhibitors. However, NA still could increase mEPSC frequency either in the Ca(2+)-free external solution or in the presence of 1 microM thapsigargin. The results suggest that activation of presynaptic beta(2)-adrenoceptors facilitates spontaneous glutamate release to VMH neurons via cAMP/PKA signal transduction pathway. beta(2)-Adrenoceptor-mediated presynaptic modulation of excitatory glutamatergic transmission would therefore be expected to play a pivotal role in the regulation of a variety of behavioral functions, which are mediated by the VMH.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Lee JG,Choi IS,Park EJ,Cho JH,Lee MG,Choi BJ,Jang ISdoi
10.1016/j.neuroscience.2006.10.049subject
Has Abstractpub_date
2007-02-23 00:00:00pages
1255-65issue
4eissn
0306-4522issn
1873-7544pii
S0306-4522(06)01471-0journal_volume
144pub_type
杂志文章相关文献
NEUROSCIENCE文献大全abstract::Intense natural or electrical stimulation of afferents from the toes or the heel results in prolonged changes in the excitability of the heel withdrawal reflex pathway in the rabbit. This study has investigated the roles played by tachykinin NK1 receptors in mediating these effects. Reflexes were evoked by electrical ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)00608-8
更新日期:1995-06-01 00:00:00
abstract::Insulin-like growth factor-I elicits a long-term depression of the glutamate-induced GABA release in the adult rat cerebellum that lasts at least several hours. We studied whether protein kinase C and nitric oxide may be involved in this effect of insulin-like growth factor-I on GABA release since both signalling path...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(95)00472-6
更新日期:1996-02-01 00:00:00
abstract::Previous research has implicated hippocampal rhythmical slow activity in the mechanisms of action of the anxiolytic drugs. In this study ethanol and a putative ethanol antagonist, Ro 15-4513, were investigated with reticular elicitation of rhythmical slow activity. Doses of ethanol between 0.6 and 3.1 g/kg were used. ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(90)90337-4
更新日期:1990-01-01 00:00:00
abstract::Drinking alcohol during pregnancy is particularly detrimental for the developing brain and may cause a broad spectrum of cognitive and behavioral impairments, collectively known as fetal alcohol spectrum disorder (FASD). While behavioral abnormalities and brain damage have been widely investigated in animal models of ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2019.11.045
更新日期:2020-02-10 00:00:00
abstract::I.c.v. injection of L-ornithine has been shown to have sedative and hypnotic effects on neonatal chicks exposed to acute stressful conditions. To clarify the mechanism, we conducted three experiments under strengthened stressful conditions with corticotropin-releasing factor (CRF). In Experiment 1, the effect of i.c.v...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2010.10.076
更新日期:2011-01-13 00:00:00
abstract::Selective replacement of degenerated neurons in the adult brain with allogeneic fetal neuroblasts is a promising therapeutic modality for human neurodegenerative diseases, but is confounded with practical and potential ethical problems. To evaluate the potential of xenogeneic donors as a cell source for neural transpl...
journal_title:Neuroscience
pub_type: 杂志文章,meta分析
doi:10.1016/0306-4522(94)90338-7
更新日期:1994-10-01 00:00:00
abstract::Solid pieces of cerebellar primordia taken from 12-day-old C57BL embryos were implanted into the cerebellar parenchyma of 3- to 4-month-old "Purkinje cell degeneration" mutant mice and analysed 2-3 months later. Purkinje cell replacement was followed by means of immunocytochemistry with antisera against either cyclic ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(87)90002-9
更新日期:1987-01-01 00:00:00
abstract::In the cerebral cortex, the voltage-gated potassium channel, Kv3.1b, a splicing variant of Kv3.1, has been associated with fast-firing interneurons. Here, we report strong expression of Kv3.1b-protein and mRNA in both Betz and Meynert pyramidal cells of the monkey, as shown by immunohistochemistry and in situ hybridiz...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2004.08.005
更新日期:2004-01-01 00:00:00
abstract::Oxytocin regulates partner preference formation and alloparental behavior in the socially monogamous prairie vole (Microtus ochrogaster) by activating oxytocin receptors in the nucleus accumbens of females. Mating facilitates partner preference formation, and oxytocin-immunoreactive fibers in the nucleus accumbens hav...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.05.055
更新日期:2009-09-15 00:00:00
abstract::In the adult CNS, tissue-specific germinal niches, such as the subventricular zone of the lateral ventricles and the subgranular zone of the dentate gyrus of the hippocampus, contain multipotent neural precursor cells (NPCs) with the capacity to self-renew and differentiate into functional brain cells (i.e. neurons, a...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2013.07.022
更新日期:2013-10-10 00:00:00
abstract::Nitric oxide synthase is co-localized with somatostatin and neuropeptide Y in a subpopulation of striatal interneurons that stain selectively for NADPH-diaphorase. We studied the ontogeny of diaphorase-positive neurons in striatal serum-free cultures derived from 15-16-day-old CD1 mice. NADPH-diaphorase staining was d...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(96)00415-0
更新日期:1997-02-01 00:00:00
abstract::The ontogeny of substance P-containing neuron system in the forebrain and upper brain stem of the rat was investigated by means of the indirect immunofluorescence technique. Substance P-positive structures first appeared in the primordium of the epithalamus and the area which surrounded the commissura posterior of the...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(82)90165-8
更新日期:1982-01-01 00:00:00
abstract::Neural activity during early development is known to alter innervation pathways in the central and peripheral nervous systems. We sought to examine how reduced sound-induced sensory activity in the cochlea affected the consolidation of glutamatergic synapses between inner hair cells (IHC) and the primary auditory neur...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2016.03.043
更新日期:2016-06-14 00:00:00
abstract::Electrical stimulation of the distal stump of cut peripheral nerves is a commonly accepted way to evoke neurogenic inflammation. Nevertheless, the modulatory effect of biogenic amines and vasoactive peptides released from efferent fibres can be excluded only if the dorsal roots are stimulated. The present study was fo...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(95)00104-q
更新日期:1995-09-01 00:00:00
abstract::We have examined the effects of low pH and the selectivity of the capsaicin antagonist capsazepine on single sensory fibres innervating the guinea-pig trachea in vitro, and on the whole isolated vagus nerve. Application of a pH 5 solution for 1 min to the exposed receptive fields of single fibres caused excitation of ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(95)00115-y
更新日期:1995-08-01 00:00:00
abstract::Walking onto a stationary sled previously experienced as moving induces locomotor aftereffects (LAE, or "broken escalator phenomenon"). This particular form of aftereffect can develop after a single adaptation trial and occurs despite subjects being fully aware that the sled will not move. Here, we investigate whether...
journal_title:Neuroscience
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.neuroscience.2010.06.079
更新日期:2010-09-29 00:00:00
abstract::Glutamate, the main excitatory amino acid transmitter in the vertebrate brain is involved in the dynamic changes in protein repertoire that underlie synaptic plasticity. Activity-dependent differential expression patterns occur not only in neurons but also in glial cells. In fact, a membrane to nuclei signaling has be...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2006.04.076
更新日期:2006-09-01 00:00:00
abstract::The effect of intrathecal or intracerebroventricular administration of the GABAB receptor agonist, baclofen, on rhythmic contractions induced by distension of the urinary bladder (micturition reflex) was evaluated in urethane-anesthetized rats. Baclofen inhibited bladder motility acting at central nervous system sites...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90350-b
更新日期:1992-01-01 00:00:00
abstract::Forebrain neuronal circuits containing hypocretin-1 (hcrt-1) and norepinephrine (NE) are important components of central arousal-related processes. Recently, these two systems have been shown to have an overlapping distribution within the bed nucleus of the stria terminalis (BST), a limbic structure activated by stres...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2013.09.032
更新日期:2013-01-01 00:00:00
abstract::Brain microvascular endothelial cell (BMEC) injury induced by ischemia-reperfusion (I/R) is the initial stage of blood-brain barrier (BBB) disruption, which results in a poor prognosis in ischemic stroke patients. Autophagy has been shown to have protective effects on BMECs against cerebral ischemic insults. However, ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2017.04.017
更新日期:2017-06-23 00:00:00
abstract::Dopamine stimulates the phosphorylation of the neuron-specific synaptic vesicle proteins Synapsin I, Protein IIIa and Protein IIIb in the posterior pituitary gland of the rat [Tsou and Greengard (1982) Proc. natn. Acad. Sci. U.S.A. 79, 6075-6079]. This effect has been characterized in the present investigation. The st...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(85)90073-9
更新日期:1985-07-01 00:00:00
abstract::Creatine supplementation has been shown to protect neurons from oxidative damage due to its antioxidant and ergogenic functions. These features have led to the hypothesis of creatine supplementation use during pregnancy as prophylactic treatment to prevent CNS damage, such as hypoxic-ischemic encephalopathy. Unfortuna...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.11.017
更新日期:2016-01-15 00:00:00
abstract::The effect of lacosamide (LCS), a functionalized molecule with anti-convulsant properties, on ion channels was investigated, with the aid of patch clamp technology and simulation modeling. In NSC-34 neuronal cells, LCS was found to block voltage-gated Na(+) current (INa) in a frequency- and concentration-dependent man...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2014.12.026
更新日期:2015-02-26 00:00:00
abstract::Our light and electron microscopic studies (Seress L., Nitsch R. and Leranth C. (1993) Neuroscience 55, 775-796.) indicated that in the hippocampus of the African Green monkey, calretinin is exclusively present in non-pyramidal cells. Calretinin-positive axons formed a prominent band at the border of the dentate molec...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(93)90442-i
更新日期:1993-08-01 00:00:00
abstract::Recently evidence has accumulated that schizophrenia can arise from primary synaptic defects involving structural proteins particularly, microtubule associated proteins. Previous experiments have demonstrated that a STOP (stable tubule only peptide) gene deletion in mice leads to a phenotype mimicking some aspects of ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2008.07.080
更新日期:2008-11-11 00:00:00
abstract::Some glutamatergic synapses in the mammalian central nervous system exhibit high levels of free ionic zinc in their synaptic vesicles. The precise role of this vesicular zinc remains obscure, despite suggestive evidence for zinc as a neuromodulator. As a step towards elucidating the role of free zinc in the brain we h...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(96)00695-1
更新日期:1997-07-01 00:00:00
abstract::Bone morphogenetic proteins (BMPs) are members of the transforming growth factor β (TGF-β) superfamily. BMPs, such as BMP2 and BMP4, exert its biological functions by interacting with membrane bound receptors belonging to the serine/threonine kinase family including bone morphogenetic protein receptor I (BMPRIA, BMPRI...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2011.12.022
更新日期:2012-02-17 00:00:00
abstract::The known genetic mutation causing Huntington's disease (HD) makes this disease an important model to study links between gene and brain function. An autosomal dominant family history and the availability of a sensitive and specific genetic test allow pre-clinical diagnosis many years before the onset of any typical c...
journal_title:Neuroscience
pub_type: 杂志文章,评审
doi:10.1016/j.neuroscience.2009.01.045
更新日期:2009-11-24 00:00:00
abstract::The involvement of nitric oxide in neurodegenerative processes still remains incompletely characterized. Although nitric oxide has been reported to be an important mediator in neuronal degeneration in different models of cell death involving NMDA-receptor activation, increasing evidence for protective mechanisms has b...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(99)00599-0
更新日期:2000-01-01 00:00:00
abstract::Stroke-prone spontaneously hypertensive rats (SHRSP/Izm) develop severe hypertension, and more than 95% of them die of cerebral stroke. Hypoxic stimulation followed by oxygen reperfusion induces neuronal damage in both normotensive Wistar Kyoto/Izm (WKY/Izm) and SHRSP/Izm rats, and the percentage of neurons that under...
journal_title:Neuroscience
pub_type: 杂志文章,评审
doi:10.1016/j.neuroscience.2010.07.013
更新日期:2010-09-29 00:00:00