Abstract：
:Previous studies using a pharmacological approach suggested a neural pathway emanating from the periaqueductal gray (PAG) to the nucleus accumbens relevant to antinociception. This was investigated with neurochemical and histochemical methods in the present study. Push-pull perfusion and radioimmunoassay were used to measure the release of immunoreactive-(ir) enkephalin (ir-ENK) and ir-beta-endorphin (ir-beta-EP) in the nucleus accumbens after microinjection of morphine into the PAG and the nucleus raphe dorsalis (NRD) of the rabbit. Morphine administration elicited an increase in ir-ENK and ir-beta-EP in the nucleus accumbens. Horseradish peroxidase (HRP) retrograde tracing in combination with 5-hydroxytryptamine (5-HT) immunocytochemistry revealed a serotonergic projection from the NRD and ventral PAG to the nucleus accumbens in the rabbit. About 7% of the serotonin-positive cells in the NRD and ventral PAG send fibers directly to the nucleus accumbens, with an ipsilateral dominance. These results indicate the existence of a serotonergic pathway from the NRD to the N. accumbens involved in opioid analgesia.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Ma QP,Han JSdoi
10.1016/0361-9230(92)90215-jkeywords:
subject
Has Abstractpub_date
1992-06-01 00:00:00pages
931-6issue
6eissn
0361-9230issn
1873-2747pii
0361-9230(92)90215-Jjournal_volume
28pub_type
杂志文章abstract：BACKGROUND:Deep brain stimulation (DBS) refers to the delivery of electric current to specific deep brain structures through implanted electrodes. Recently approved for use in United States, DBS to the anterior nucleus of thalamus (ANT) is a safe and effective alternative treatment for medically refractory seizures. De...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.01.011
更新日期：2019-04-01 00:00:00
abstract：:Walker 256 carcinosarcoma cells produce subpleural pulmonary metastases when given intravenously to the Sprague-Dawley rat. The number of metastases increases when the rat is given morphine subsequent to the tumor load. The increase in the number of metastases can be blocked be pretreatment with the opiate antagonist ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(86)90057-2
更新日期：1986-03-01 00:00:00
abstract：:It has been demonstrated that the posteromedial cortical amygdaloid nucleus (PMCo), is sexually dimorphic. It is shown (Experiment 1) that male orchidectomy on the day of birth (D1) decreases the volume and number of neurons of the PMCo, while a single injection of propionate testosterone to the female on D1 masculini...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(00)00332-4
更新日期：2000-10-01 00:00:00
abstract：:The ability of homotypic cortical tissue grafts to induce recovery of function after a gustatory neocortex (GN) lesion was studied using the conditioned taste aversion (CTA) paradigm. On acquisition day, 26 GN-lesioned and 8 sham-lesioned rats were presented with a saccharin solution, followed by an injection of the i...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90222-5
更新日期：1988-05-01 00:00:00
abstract：:Seizure activity stimulates adult neurogenesis, the birth of new neurons, in the hippocampus. Many new neurons that develop in the presence of repeatedly induced seizures acquire abnormal morphological and functional characteristics that can promote network hyperexcitability and hippocampal dysfunction. However, the i...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.07.003
更新日期：2019-10-01 00:00:00
abstract：:Catecholaminergic systems, specifically in the region of the lateral perifornical hypothalamus (PFH), have been linked to the inhibition of feeding behavior. The present studies examined the effects of d-amphetamine (AMPH), which is believed to act through the release of endogenous catecholamines (CAs), on spontaneous...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(86)90200-5
更新日期：1986-11-01 00:00:00
abstract：:Cardiolipin is a mitochondrial membrane phospholipid with several well-defined metabolic roles. Cardiolipin can be released extracellularly by damaged cells and has been shown to affect peripheral immune functions. We hypothesized that extracellular cardiolipin can also regulate functions of microglia, the resident im...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.01.002
更新日期：2019-03-01 00:00:00
abstract：:The neuropathology of Alzheimer disease is characterized by senile plaques, neurofibrillary tangles and cell death. These hallmarks develop according to the differential vulnerability of brain networks, senile plaques accumulating preferentially in the associative cortical areas and neurofibrillary tangles in the ento...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2009.06.006
更新日期：2009-10-28 00:00:00
abstract：:beta-endorphin-like immunoreactivity was measured by radioimmunoassay in the brains of adult rats treated neonatally with beta-endorphin, naloxone, or vehicle. After treatment with beta-endorphin, the decreases observed in beta-endorphin-like immunoreactivity in the hypothalamus, pineal, midbrain, pons-medulla, hippoc...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(81)90118-0
更新日期：1981-12-01 00:00:00
abstract：:In the present study, multi-electrode array recording was used to examine dorsal horn activity following stimulation of primary afferents in a rat dorsal root attached-spinal cord slice preparation. The multi-electrode array probe was placed under the dorsal horn slice and local field potentials evoked by stimulation ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2017.04.012
更新日期：2017-05-01 00:00:00
abstract：:The development of dopamine-immunoreactive (DAir) populations in the central nervous system of the sea lamprey, a modern representative of the earliest vertebrates, was studied to achieve further understanding of dopaminergic systems in vertebrates. The first DAir cell groups appeared in the spinal cord, the posterior...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.05.004
更新日期：2005-09-15 00:00:00
abstract：:Orexin/hypocretin neurons of the lateral hypothalamus/perifornical area project to a diverse array of brain regions and are responsive to a variety of psychostimulant drugs. It has been shown that orexin neurons are activated by systemic nicotine administration suggesting a possible orexinergic contribution to the eff...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.09.014
更新日期：2008-12-16 00:00:00
abstract：:Patterns of female sexual behavior in the hamster are qualitatively different from that observed in the rat. Hamsters demonstrate tonic immobility and a sustained lordotic response that can last for several minutes following minimal stimulation from the male while in rats, the lordotic response is highly dependent upo...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90064-5
更新日期：1987-12-01 00:00:00
abstract：:Theories pertaining to the "why" of motion sickness are in short supply relative to those detailing the "how." Considering the profoundly disturbing and dysfunctional symptoms of motion sickness, it is difficult to conceive of why this condition is so strongly biologically based in humans and most other mammalian and ...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2009.09.017
更新日期：2010-01-15 00:00:00
abstract：:Rearing preweanling rat pups away from their mothers by feeding through chronic intragastric cannulas has been shown to result in alterations in the growth of specific organs. In the present study, artificially reared (AR) rats and their normally reared (NR) siblings were sacrificed at various ages during this procedu...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90006-0
更新日期：1983-12-01 00:00:00
abstract：:Sigma receptor agonists have been found to provide potent neuroprotection in rats and mice. This neuroprotection is thought to be mediated through anti-excitotoxic mechanisms. Neuroprotective and immune modulatory effects of sigma ligands have not been investigated in embolic stroke. In the present study, rats were su...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.03.019
更新日期：2011-05-30 00:00:00
abstract：:Several studies have demonstrated alterations in the dopamine (DA) system after traumatic brain injury (TBI). Additionally, the existence of significant sex-related differences in the dopaminergic system has long been recognized. Accordingly, the purpose of the present study was to investigate whether TBI would differ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2016.05.010
更新日期：2016-06-01 00:00:00
abstract：:The antidepressant desipramine has been shown to decrease synaptic membrane concentrations of the norepinephrine re-uptake transporter (NET) in vivo and in vitro, on both an acute and a chronic basis. The possible contribution of decreased NET synthesis to the chronic downregulation of the NETs has not been definitive...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00063-5
更新日期：1999-07-01 00:00:00
abstract：:The aim of the present study was to investigate the effects of activation of metabotropic glutamate receptors (mGluR) on the extracellular concentrations of GABA and acetylcholine in the prefrontal cortex of freely moving rats of different groups of age. Perfusion, through the microdialysis probe, of the agonist of mG...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.10.010
更新日期：2005-02-15 00:00:00
abstract：:Cytochrome P450 2D (CYP2D) mediates the activation and inactivation of several classes of psychoactive drugs, including opioids, which can alter drug response. Tramadol is a synthetic opioid with analgesic activity of its own as well as being metabolically activated by CYP2D to O-desmethyltramadol (ODMST) an opioid re...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.09.001
更新日期：2020-11-01 00:00:00
abstract：:Early life Stress is a worldwide concern linked with development of later life neurological disorders. Early developmental age is sensitive to many prominent environmental insults like malnourishment, immune inflammation, abuse, maternal separation, alcohol and drugs. Hence, an individual during an early age encounter...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2019.02.005
更新日期：2019-04-01 00:00:00
abstract：:Delayed visual maturation (DVM) is characterised by visual unresponsiveness in early infancy, which subsequently improves spontaneously to normal levels. We studied the optokinetic response and recorded pattern reversal VEPs in six infants with DVM (aged 2-4 months) when they were at the stage of complete visual unres...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(96)00128-1
更新日期：1996-01-01 00:00:00
abstract：:Promoting remyelination and/or minimizing demyelination are key therapeutic strategies under investigation for diseases and injuries like multiple sclerosis (MS), spinal cord injury, stroke, and virus-induced encephalopathy. Myelination is essential for efficacious neuronal signaling. This myelination process is origi...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2019.07.013
更新日期：2019-10-01 00:00:00
abstract：OBJECTIVE:Transcranial near-infrared stimulation (tNIRS) can penetrate the scalp and skull and can reach the superficial layers of the cerebral cortex. In this study, we evaluated whether an 820-nm tNIRS can modulate the excitability of the primary motor cortex (M1) as measured by transcranial magnetic stimulation (TMS...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.12.007
更新日期：2020-02-01 00:00:00
abstract：:Extracellular recordings were obtained in anaesthetized rats from single neurons located in various structures around the rostral end of the third ventricle, known to harbour integrative neurons sensing deficiencies in and originating corrective responses for water-electrolyte balance. Once arginine vasopressin (AVP) ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90097-4
更新日期：1988-06-01 00:00:00
abstract：:Intracerebroventricular (IVT) administration of renin (R) to conscious male hydrated rats induces an increase in sodium excretion. The involvement of brain dopaminergic neurons in the renal action of IVT-R was investigated. Renin-induced natriuretic action was prevented by domperidone and by inhibition of tyrosine hyd...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(96)00032-9
更新日期：1996-01-01 00:00:00
abstract：:Little is known about the behavioral, nutritional, and metabolic events that control dietary intake quality. Two experiments are described that manipulate nutritional conditions that have been hypothesized to affect dietary item choice so as to assess what effect, if any, the added factor of genetic obesity has in mod...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(85)90112-1
更新日期：1985-06-01 00:00:00
abstract：:Parkinson's-diseased (PD) brains have been reported to contain increased quantities of iron within the zona compacta of the substantia nigra (SN). To test whether excess iron in the SN could cause a PD-like loss of dopaminergic neurons, various concentrations of iron were infused unilaterally within the SN of adult ma...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90118-h
更新日期：1992-04-01 00:00:00
abstract：:The brain serotoninergic (5HTergic) system of epileptic subjects can influence their vulnerability to stress. We studied the putative dependency of 5HT neurotransmission parameters on emotional stress, and the presence, types and severity of seizures using rats with genetic generalized (absence and/or audiogenic) epil...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.03.008
更新日期：2006-05-31 00:00:00
abstract：:Current treatments for Parkinson's disease (PD) rely on a dopamine replacement strategy and are reasonably effective, particularly in the early stages of the disease. However, chronic dopaminergic therapy is limited by the development of a range of side effects, including dyskinesia. This has led to a search for alter...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.10.011
更新日期：2005-12-15 00:00:00
