Abstract：
:Endogenous adrenergic drive regulates the firing rate of serotonergic neurons. However, advocates of feedback theory assert that 5-hydroxytryptamine (5-HT) released in the somatodendritic region of raphe neurons regulates both rate and release of 5-HT. Experiments were done to determine if the somatodendritic region might have receptors for norepinephrine that inhibit release of 5-HT independently of rate, as this would allow for discrete effects of norepinephrine on rate and release, even in the presence of functional feedback by 5-HT. The release of 5-HT at fixed frequencies of stimulation was substantially reduced when norepinephrine (1 and 3 x 10(-7) M) was present. Norepinephrine also inhibited the release of 3H-5-HT with delivery of a single stimulation pulse ruling out a remote action of the catecholamine. The alpha(1) antagonist prazosin did not modify the profile of norepinephrine inhibition. Further, the alpha(1) agonist phenylephrine had no effect on 3H-5-HT efflux. The alpha(2) antagonist yohimbine antagonized almost entirely the inhibition by norepinephrine at 1 Hz, and reduced it substantially at 3 Hz. Blockade of 5-HT(1) receptor sites with methiothepin did not reduce the inhibitory effect of norepinephrine on 3H-5-HT efflux. It is proposed that release of endogenous norepinephrine at synapses with 5-HT neurons could activate 5-HT neuron firing rate through alpha(1) receptors located at the soma and simultaneously short-circuit ongoing 5-HT feedback inhibition by inhibiting release through adrenergic alpha two receptors likely located at the dendrites.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Kalsner S,Abdali SAdoi
10.1016/s0361-9230(01)00567-6keywords:
subject
Has Abstractpub_date
2001-08-01 00:00:00pages
761-5issue
6eissn
0361-9230issn
1873-2747pii
S0361923001005676journal_volume
55pub_type
杂志文章abstract：:The olfactory bulb (OB) of the rat receives an extrinsic innervation from the most anterior part of the basal forebrain cholinergic complex. The effect of microiontophoretically applied acetylcholine (ACh) on OB unit activity was studied in 16 adult male rats. A total of 80 units was recorded and in 50% of the cases t...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90199-a
更新日期：1990-02-01 00:00:00
abstract：:Nicotinic acetylcholine (ACh) and dopamine (DA) receptor activation has been found to be important for working memory. The regional distribution of these receptors in the brain has been well characterized. However, the relationship of the region-specific nicotinic ACh and DA binding density to memory performance has n...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(97)00009-9
更新日期：1997-01-01 00:00:00
abstract：:In the preceding article, a dorsochiasmatic area (DCh) was described that projects to both paraventricular (PVN) and supraoptic (SON) nuclei. The main afferents of the DCh, revealed by local injections of retrograde tracers, are the hypothalamic PVN and SON, lateral septal nuclei (LSV and SHy), bed nuclei of the stria...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90107-4
更新日期：1994-01-01 00:00:00
abstract：:When applied by iontophoresis onto single sympathetic preganglionic neurones in the intermediolateral nucleus of segments T1-T3 in the cat, oxytocin and vasopressin each had an excitatory effect. This effect consisted of a prolonged (30-300 sec) after-discharge following termination of application. These results indic...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90201-6
更新日期：1984-11-01 00:00:00
abstract：:The glucostatic theory supports the role of central and peripheral substrate "sensors" in monitoring cellular glucose metabolism. Induction of hyperphagia and hyperglycemia by intracerebroventricular (i.c.v.) delivery of drugs inhibiting glucose uptake or oxidation suggests that glucose "sensors" are accessible from t...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00228-2
更新日期：2000-02-01 00:00:00
abstract：:Medial preoptic axons were traced into the diagonal band of Broca and septum, particularly lateral septum. Other labeled fibers could be followed dorsally from medial preoptic area injections adjacent to the stria medullaris, and in the periventricular fiber system and the stria terminalis and its bed nucleus. The ant...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(80)90167-7
更新日期：1980-05-01 00:00:00
abstract：:With the use of moveable electrodes, 28 rat mesencephalic sites were examined for self-stimulation behavior (SS). The relative importance of each site in SS was established according to (1) a traditional method which consists of comparing sites based on the rates of responding (2) a psychophysical procedure based on t...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90097-1
更新日期：1982-06-01 00:00:00
abstract：:Axons of retinal ganglion cells showed responses not previously emphasized: (a) many tonic units discharged oscillations, 2--12 spikes per burst, interburst intervals 20--300 msec; (b) phasic units showed concentric or flanking ON and OFF fields, response frequency depended on balance of retinal excitation and inhibit...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(76)90080-0
更新日期：1976-11-01 00:00:00
abstract：:The role of gamma-aminobutyric acid (GABA) in the regulation of gonadotropin hormone-releasing hormone (GnRH) release was studied using rat hypothalamic slices in vitro. Perifusion with GABA (10(-8)-10(-4) M) caused a dose-dependent increase in GnRH release. The GABAA receptor agonist isoguvacine (10(-5) M) also stimu...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90208-0
更新日期：1988-10-01 00:00:00
abstract：:Neurobiotin and Lucifer yellow, indicators of gap junctional coupling, were applied to primary afferent fibers of the frog. Following application of tracers to cervical or lumbar dorsal root fibers, a large number of labeled granule cells were detected in the corpus cerebelli, the brainstem, and the spinal cord. The v...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00707-9
更新日期：2002-02-01 00:00:00
abstract：:There are cholinergic inputs responsible for pressor responses in the rostral ventrolateral medulla (RVLM) and stimulation of midbrain central gray (CG) increases arterial pressure via activation of neurons in the RVLM. In this study, we examined whether the CG was involved in mediation of the cholinergic inputs to th...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00088-x
更新日期：1999-09-01 00:00:00
abstract：:Ten years after the discovery of human diseases caused by trinucleotide repeat expansions, searching for mechanistic links between gene mutation and pathological phenotype remains a fundamental and unsolved issue. Evidence accumulated so far indicates that the pathogenesis of repeat disorders is complex and multi-fact...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(01)00651-7
更新日期：2001-10-01 00:00:00
abstract：:The Lurcher (Lc/+) mutant mouse is characterized by a considerable atrophy of the cerebellum due to a massive loss of cerebellar Purkinje and granule cells, as well as of neurons from the inferior olivary nucleus. In this study the effects of a therapeutic combination of amantadine, thiamine and L-tryptophan on the se...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(98)00164-6
更新日期：1999-01-15 00:00:00
abstract：:Genetic analysis aims to identify the variations in DNA sequence whose functional consequences produce heritable variations in phenotype. In one of the first successes of unbiased molecular genetic analysis in human disease, the Huntington's disease (HD) gene was mapped and cloned without any prior knowledge of the na...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.10.014
更新日期：2007-04-30 00:00:00
abstract：:This paper provides an introduction to a special issue dedicated to the action of environmental estrogens on neural circuits and behavior. The problem of endocrine disrupting chemicals (EDCs), i.e. chemicals that have the capacity to interfere with the endocrine system, has gained increasing attention as it has become...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2005.01.007
更新日期：2005-04-15 00:00:00
abstract：:The influence on pain processing caused by destruction or stimulation of the dorsal reticular nucleus (DRt) was studied using the tail-flick and the increasing temperature hot-plate tests. Lesions of the DRt were obtained by injecting quinolinic acid (180 nmol/microliters) unilaterally or bilaterally, and nociceptive ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(95)02027-6
更新日期：1996-01-01 00:00:00
abstract：:The uptake of 3H-2-deoxyglucose (3H-2-DG) in selected brain structures was determined subsequent to electrical stimulation of insular cortex (Ins) and the mediodorsal (MD) nucleus of the thalamus in rabbits. Stimulation of Ins elicited parasympathetic-like responding (i.e., bradycardia and depressor responses); wherea...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90148-1
更新日期：1987-10-01 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：:Using the in vitro hamster hypothalamic slice preparation, the effects of GABA and 80% chloride (Cl-) reduced medium on the single unit activity of SCN neurons was investigated. GABA 10(-4) M produced inhibitory responses in 55% of the 69 SCN neurons examined. No statistically significant day-night difference was obse...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90257-z
更新日期：1990-07-01 00:00:00
abstract：:Calcium channels affect many neuronal functions, including membrane electrical excitability, synaptic transmission, cellular homeostasis, gene transcription, growth, and development. We used recently developed methods for serum-free culture of adult and embryonic rat neurons to study the development of voltage-sensiti...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(98)00147-6
更新日期：1999-01-01 00:00:00
abstract：:Arachidonic acid [20:4(N-6)] has been implicated in neurological damage induced by cerebral ischaemia. Membrane arachidonate concentrations can be reduced by changes in dietary fat intake. Therefore, in the present study, we have investigated the effects of N-3 fatty acid supplementation on neuronal damage induced by ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(93)90180-j
更新日期：1993-01-01 00:00:00
abstract：:Eighty-four percent of principal cells in the dorsal nucleus of the lateral geniculate body exhibited a transient depression of spontaneous activity following optic tract stimulation. Antidromic corticofugal activity, generated by the evoked cortical field potential, was seen in 21% of the cells studied. In those cell...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(80)80002-5
更新日期：1980-07-01 00:00:00
abstract：:Male and female rats were treated daily for 7 days with mazindol (5, 10, and 20 mg/kg), an anorectic drug, and tested in the open field. Mazindol developed sensitization to its locomotor stimulatory effect in both sexes on day 7 with a nondose-dependent pattern of response. However, the locomotor activity appeared to ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90034-5
更新日期：1994-01-01 00:00:00
abstract：:Mutations in PLA2G6, which encodes calcium-independent phospholipase A(2) group VIA (iPLA2-VIA), underlie the autosomal recessive disorder infantile neuroaxonal dystrophy (INAD). INAD typically presents in the first year of life, and leads to optic atrophy and psychomotor regression. We have examined PLA2G6 expression...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2010.08.011
更新日期：2010-11-20 00:00:00
abstract：:A number of biological risk factors have been implicated for Alzheimer's disease (AD). The investigation of prevalence rates of AD in crosscultural populations has much potential in validating these factors. We previously assessed brain amyloid beta (A beta) protein deposition and other lesions associated with AD as p...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(97)00310-9
更新日期：1997-01-01 00:00:00
abstract：:Endocannabinoid system activity contributes to the homeostatic defense against aging and thus may counteract the progression of brain aging. The cannabinoid type 1 (CB1) receptor activity declines with aging in the brain, which impairs neuronal network integrity and cognitive functions. However, the underlying mechani...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.03.014
更新日期：2020-07-01 00:00:00
abstract：:Behavioral abnormalities have been reported in young and adult animals exposed to benzodiazepines prenatally. The presence of neurochemical alterations in the GABAergic system after prenatal benzodiazepine exposure was assessed in a chick model which avoids prenatal and postnatal maternal effects. The GABAA receptor c...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(89)90143-3
更新日期：1989-09-01 00:00:00
abstract：:Transcription factor Pbx4 is recruited to form dimeric or trimeric complexes with Hox and/or Meis homeodomain proteins and participates in patterning the hindbrain and retina during vertebrate CNS development. We characterized a Pbx4 cDNA isolated from a Gekko japonicus brain and spinal cord cDNA library. Northern blo...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2009.08.010
更新日期：2009-12-16 00:00:00
abstract：:The increase in life expectancy seen in many countries has been accompanied by an increase in the number of people living with dementia and a growing need for health care. The large number of affected individuals emphasizes the need to identify causes for the phenotypes associated with diseases such as Alzheimer's, Pa...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2010.02.013
更新日期：2010-04-29 00:00:00
abstract：:Intelligence depends on the ability of the brain to acquire and apply rules and representations. At the neuronal level these properties have been shown to critically depend on the prefrontal cortex. Here we present, in the context of the Distributed Adaptive Control architecture (DAC), a biologically based model for f...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2010.11.008
更新日期：2011-06-30 00:00:00
