Abstract:
:Intra-arterial (i.a.) injection of Indian red scorpion (Mesobuthus tamulus; BT) venom produces cardiorespiratory changes by involving perivascular receptors. The afferents involved in mediating these reflex responses are not known. The present investigation was conducted to examine the afferents mediating the vasosensory reflexes evoked by i.a. injection of BT venom in the peripheral end of femoral artery in urethane anaesthetised rats. Blood pressure (BP), ECG (for heart rate), and respiratory movements (for rate and depth) were recorded for 30min after the i.a. injection of venom. Minute ventilation (MV) was computed by using appropriate calibrations for depth and rate of respiration. After the injection of venom, there was immediate hyperventilatory, intermediate hypertensive and delayed bradycardiac response. Equal volume of saline (0.10ml, i.a.) did not produce any cardiorespiratory changes thus, eliminating the possibility of stretch mediated responses. Sectioning of ipsilateral sciatic and femoral nerves attenuated the hyperventilatory and hypertensive responses produced by venom significantly. After the neurotomy, the latency of bradycardiac response was shortened significantly. Even the time to reach the peak bradycardiac response was also shortened. The data provide evidences for the partial involvement of somatic nerves in mediating the vascular reflexes.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Singh SK,Deshpande SBdoi
10.1016/j.neulet.2008.04.037subject
Has Abstractpub_date
2008-06-13 00:00:00pages
64-6issue
1eissn
0304-3940issn
1872-7972pii
S0304-3940(08)00524-7journal_volume
438pub_type
杂志文章abstract::Surface molecules play important roles in a wide range of cellular functions, yet little has been reported regarding the expression of such markers by neural stem cells. Here, multipotent human neural progenitor cells (hNPCs) were expanded as a monolayer in the presence of fibroblast/epidermal growth factor, harvested...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)02215-7
更新日期:2001-10-26 00:00:00
abstract::Spinal cord injury (SCI) leads to an increase in metabotropic glutamate receptor subtype 1 (mGluR1) immunoreactivity in the peri-lesion area. The increased expression of mGluR1 parallels the development of thermal hyperalgesia and mechanical allodynia and has been suggested to contribute to the development and mainten...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)02551-4
更新日期:2002-02-15 00:00:00
abstract::The hippocampal formation plays a critical role in episodic memory formation and spatial navigation. Within the hippocampus, the subiculum is considered to be a hub connecting the hippocampal formation to the remainder of the brain. There are functional differences between the dorsal and ventral part of subiculum, whi...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2016.07.014
更新日期:2016-08-26 00:00:00
abstract::A random sample of 60 late-onset Alzheimer's disease (AD) cases from a population-based study were apolipoprotein E (apoE) genotyped and clinically examined with a 3-year interval. The epsilon 4 allele carriers had a significantly lower age of disease onset compared to non-epsilon 4 carriers. However, no significant d...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(94)11107-t
更新日期:1995-01-02 00:00:00
abstract::The administration of DN-1417, a synthetic derivative of TRH with more potent central action, significantly reduced specific [3H]GABA binding in the cerebellum, whereas [3H]GABA binding in the cerebral cortex was not changed. Scatchard analysis showed that the decreased [3H]GABA binding in the cerebellum was due to de...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(83)90398-1
更新日期:1983-12-02 00:00:00
abstract::Three forms of stress-induced analgesia (electric shock, forced water-swim and novelty) were used to examine the nature of the endogenous antiopiate system. It was hypothesized that a role of the antiopiate system may be to regulate the extent of antinociception within varying environments. The antiopiate properties o...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(88)90527-7
更新日期:1988-02-03 00:00:00
abstract::Daily administration of clonidine for 5 weeks (approx. 300 micrograms/kg/day, p.o.) produced significant decreases in blood pressure and renal sympathetic efferent activity in spontaneously hypertensive rats (SHR). After cessation of clonidine administration, blood pressure and sympathetic nerve activity recovered rap...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(79)96121-4
更新日期:1979-12-01 00:00:00
abstract::Nerve growth factor (NGF) initially interested neurobiologists because of its effects in the developing nervous system. It is now clear that NGF functions throughout the life of the animal with a wide repertoire of actions. In the sensory nervous system it primarily influences the structure and function of nociceptors...
journal_title:Neuroscience letters
pub_type: 杂志文章,评审
doi:10.1016/j.neulet.2003.12.012
更新日期:2004-05-06 00:00:00
abstract::Recently, Monfils et al. [9] and Clem and Huganir [3] have shown that an isolated retrieval trial before the extinction sessions (retrieval-extinction) in mice and rats prevented the renewal and spontaneous recovery of the original fear memory by inhibiting reconsolidation in a hippocampus-independent manner. In contr...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2012.06.048
更新日期:2012-08-08 00:00:00
abstract::Basic fibroblast growth factor (bFGF) is a very important mitogenic factor with proved neurogenesis effects in the central nervous system. Intranasal administration can bypass blood-brain barrier and deliver drugs into the brain directly. We investigated whether intranasal administration of bFGF at later time points a...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2008.09.030
更新日期:2008-11-28 00:00:00
abstract::The effect of the neuropeptide, substance P, on the transport of D-[(3)H]aspartate into rat striatal synaptosomes was studied. Almost 90% of the total transport of D-[(3)H]aspartate was sodium-dependent and the maximum rate (V(max)) of this transport was increased by 34% of control by 2.5 nM substance P (EC(50)=0.52 n...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(00)01318-5
更新日期:2000-08-25 00:00:00
abstract::Neovascularization of the dissociated central nervous tissue transplanted into the lateral ventricle of the rat was studied using laminin immunohistochemistry. A very high immunoreactive response to laminin was demonstrated in the presumably newly formed vessels within the transplants and the graft-host borders. The g...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(89)90257-7
更新日期:1989-04-24 00:00:00
abstract::Cultures were produced from retinas taken from human foetuses. Specific cells in culture have the capacity to take up exogenous serotonin, which was then visualized by immunofluorescence using an antisera to serotonin. The known serotonergic uptake blocker, chlorimipramine, inhibited the uptake of the amine while benz...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(85)90025-4
更新日期:1985-04-09 00:00:00
abstract::Noradrenaline in the central nervous system plays an important role in regulating physiological functions, and is a key mechanistic component of general anesthesia. The purpose of this present study was to determine if nitrous oxide and xenon modulate noradrenaline release in the cerebral cortex. We performed a series...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2009.11.074
更新日期:2010-01-22 00:00:00
abstract::We studied the altered molecular species of lipids in brain and liver tissues, and fibroblasts from patients with Zellweger syndrome (ZS). ZS cerebellum samples contained a higher amount of sphingomyelin with shorter chain fatty acids compared to that in normal controls. The amount of phosphatidylethanolamine (PE) was...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2013.07.045
更新日期:2013-09-27 00:00:00
abstract::Diabetic peripheral neuropathy (DPN) affects the sensory function of the hands and, consequently, may negatively impact hand dexterity, maximum grip strength (GSMax), and hand grip force (GF) control during object manipulation. The aims of this study were to examine and compare the GF control during a simple holding t...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2017.08.071
更新日期:2017-10-17 00:00:00
abstract::In the present study we sought to investigate the signal transduction mechanisms that underlie the alpha2-adrenergic receptor (AR)-induced, subtype-specific neuronal differentiation of PC12 cells. Alpha2-ARs induced NF-kappaB transcriptional activity and p21(waf-1) gene transcription in the same subtype-specific manne...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2006.03.066
更新日期:2006-07-24 00:00:00
abstract::The density of hippocampal adenosine A1 receptors was measured in autopsy samples of six patients with dementia with either Alzheimer (three) or sclerosis type pathology (three) in hippocampus and six control patients. Kinetic parameters (Bmax and KD) were determined by means of quantitative autoradiography using [3H]...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(98)00108-6
更新日期:1998-03-06 00:00:00
abstract::We analyzed the participation of N-methyl-d-aspartate (NMDA) receptors in the neuronal damage caused by adult-onset hypothyroidism. Wistar rats were randomly assigned into four groups. The euthyroid group received tap water. The hypothyroid group received methimazole (60 mg/kg) in their drinking water to induce hypoth...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2009.02.017
更新日期:2009-04-10 00:00:00
abstract::In the present study, newborn male Wistar rats were injected, subcutaneously, five times, every other day, with monosodium glutamate (MSG, 4 g/kg bw) or saline (as control, C), during the neonatal period. MSG animals developed destruction of the arcuate nuclei (ARC) with absence of NPY-immunoreactive cell bodies, whic...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2005.12.043
更新日期:2006-05-01 00:00:00
abstract::Ideomotor theory states that the neural codes that represent action and the perceptual consequences of those actions are tightly bound in a common code. For action imagination, bound action, and perceptual codes are thought to be internally activated at a sub-threshold level through action simulation. In support of th...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2014.11.021
更新日期:2015-01-12 00:00:00
abstract::Axons in chronically demyelinated spinal cord lesions, induced by ethidium bromide injection, display patches of intramembranous particles and indentations resembling nodal and paranodal axolemmal specializations respectively. Both occur in the marginal region of the lesions where the demyelinated axons are intimately...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(84)90015-6
更新日期:1984-07-27 00:00:00
abstract::8-Hydroxy-2-[di-n-propylamino]-tetralin) (8-OH-DPAT), a 5-HT1A/7 receptor agonist, has a chronobiological effect on the circadian system. To identify how the 8-OH-DPAT exerts this effect, we specifically destroyed the serotonergic (5-HT) fibres connecting the median raphe nuclei (RN) to the suprachiasmatic nuclei (SCN...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(98)00749-6
更新日期:1998-10-30 00:00:00
abstract::The cerebellar Purkinje cell is a major site for neurosteroid formation. We have demonstrated recently that the Purkinje cell actively produces sex steroids, such as estradiol and progesterone, de novo from cholesterol only during rat neonatal life, when cerebellar cortical formation occurs. We have further demonstrat...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.04.023
更新日期:2004-07-01 00:00:00
abstract::Current-voltage (I-V) relationships of glutamate receptors activated by the non-NMDA receptor agonist, kainate (KA), were determined in Xenopus laevis oocytes injected with either calf or chick brain mRNA. In most injected oocytes (n = 44; 84%), I-V plots to 80 microM KA exhibited inward rectification; however, in som...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(93)90031-f
更新日期:1993-03-05 00:00:00
abstract::Immunohistochemical and immunoblot techniques were employed to examine the distribution and expression of GABA(B) receptors in the prefrontal cortex of postmortem subjects with schizophrenia and bipolar disorder. GABA(B)R1a/b immunoreactivity was observed in the neuronal soma and dendrites as well as in the neuropil i...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2005.04.025
更新日期:2005-08-05 00:00:00
abstract::Using a new polyclonal antibody against prostacyclin (PGI2)-synthase this enzyme was shown to be present in neuronal cells of bovine, rat and human brain, most abundantly in Purkinje cells of the cerebellum and cortical neurons, but not in glial cells. Western blots confirmed the specificity of the antibody and applie...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(99)00558-3
更新日期:1999-08-27 00:00:00
abstract::Astrocytes are effectively involved in the pathophysiological processes in the central nervous system (CNS) and may contribute to or protect against development of inflammatory and degenerative diseases. Sildenafil is a potent and selective phosphodiesterase-5 (PDE-5) inhibitor, which induces cyclic GMP accumulation. ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2016.07.029
更新日期:2016-09-06 00:00:00
abstract::To assess the significance of the association between apolipoprotein E (APOE) epsilon 4 allele and amyloid beta-peptide (A-beta) deposits in the brain, we performed APOE-genotyping and measured the density of A-beta deposits, neuritic plaques and neurofibrillary tangles in 27 cases from the Charles Foix clinico-pathol...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(94)90763-3
更新日期:1994-09-12 00:00:00
abstract::The N-methyl-D-aspartate (NMDA) receptor-induced inhibition of muscarinic receptor-stimulated phosphoinositide turnover in guinea pig cerebral cortical slices was investigated to determine whether polyamines regulate the function of NMDA in this system. None of the polyamines tested produced significant stimulation of...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(91)90605-s
更新日期:1991-10-14 00:00:00