Abstract:
:Many of the behavioral consequences of dopamine system activation are thought to be mediated by substantia nigra pars reticulata output pathways. Extracellular, single unit recording studies were conducted to determine how i.v. administration of the dopamine agonist, apomorphine, affects the activity of these pars reticulata neurons. Results revealed that a 320 micrograms/kg dose of the drug, considered sufficient to stimulate striatal postsynaptic dopamine receptors, caused highly variable changes in reticulata cell firing. Cells exhibited increases, decreases, or no changes in firing. Many cells also displayed marked minute to minute changes in firing. This non-uniform pattern of responses was not related to state of consciousness since similar responses were observed in both chloral hydrate-anesthetized as well as conscious, paralyzed rats. Both the increases and decreases could be reversed by subsequent administration of haloperidol. The variable responses to apomorphine were reduced but not totally prevented by striatal kainic acid lesions, suggesting that changes in striatonigral transmission may account for some but not all of the firing changes which were observed. A lower dose of apomorphine (20 micrograms/kg), thought to act primarily at dopamine cell autoreceptors, had little effect on reticulata cell firing and did not modify the variable responses normally observed after the higher dose. These results contrast strikingly with the consistent excitatory responses to apomorphine which have previously been observed in the globus pallidus and suggest that complex or multiple indirect effects of the drug may contribute to the varied reticulata responses.
journal_name
Brain Resjournal_title
Brain researchauthors
Waszczak BL,Lee EK,Ferraro T,Hare TA,Walters JRdoi
10.1016/0006-8993(84)90380-9subject
Has Abstractpub_date
1984-07-23 00:00:00pages
307-18issue
1-2eissn
0006-8993issn
1872-6240pii
0006-8993(84)90380-9journal_volume
306pub_type
杂志文章相关文献
BRAIN RESEARCH文献大全abstract::Sustained seizure activity can be induced in rabbit olfactory bulb by application of brief low-level current via chronically implanted micro-electrodes. Sensitivity to such stimulation is markedly augmented by prior surgical isolation of the ipsilateral or contralateral bulb. The isolated rabbit olfactory bulb appar...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(75)90056-6
更新日期:1975-08-29 00:00:00
abstract::In recent years microvillar cells (MVC) have been identified in the olfactory epithelium of numerous species, including rodents, canines, and primates. However, there is no consensus on the morphologic or histochemical features of this cell, nor is the function of these cells currently known. Previous studies have exa...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(94)01144-7
更新日期:1995-01-09 00:00:00
abstract::Although norepinephrine-containing nerve terminals in the spinal cord synapse in the vicinity of sympathetic preganglionic cells, their effect on sympathetic outflow has remained unclear. Since survival during hypotension necessitates sustaining maximal sympathetic activity, we used experimental hypotension as a physi...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(86)90978-9
更新日期:1986-06-04 00:00:00
abstract::We investigated the effect of ketogenic diet (KD) on clusterin accumulation in the kainic acid (KA)-induced seizure model. Two days after KA administration, strong clusterin-like immunoreactivity (IR) was detected in the hippocampus in the normal diet (ND)-fed mice. But in the KD-fed mice, few clusterin-like IR was de...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2005.01.097
更新日期:2005-04-25 00:00:00
abstract::The physiological role of amyloid precursor protein (APP), whose anomalous metabolite is a putative pathogen for Alzheimer disease, remains unclear. From the enhanced responsiveness to glutamate in cultured hippocampal neurons after the introduction of cDNA of APP695 (an isoform of APP dominant in human brain) using a...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(01)02983-3
更新日期:2001-11-09 00:00:00
abstract::Experiments were performed in the male Wistar rat to investigate the projections from cardiovascular responsive sites in the ventrolateral medulla (VLM) to the subfornical organ (SFO). Unilateral iontophoretic injections of Phaseolus vulgaris leucoagglutinin (PHA-L) were made into either caudal VLM (CVLM) sites at whi...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2003.12.029
更新日期:2004-04-02 00:00:00
abstract::The retrogradely-transported tracer, rhodamine-tagged microspheres was injected into the pressor region of the rostral ventrolateral medulla (RVLM) to enable detection of paraventricular neurons in the hypothalamus that project to the RVLM. The protein, Fos, was detected immunohistochemically and used to highlight neu...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(98)00560-5
更新日期:1998-08-10 00:00:00
abstract::Rats with unilateral 6-hydroxydopamine lesions of the substantia nigra became briefly sedated and hypothermic after the acute injection of nicotine s.c. (0.4 or 0.8 mg/kg free base). When nicotine was repeated 5 days per week there was rapid tolerance for the sedation and slower tolerance for the hypothermia and the l...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(87)91114-0
更新日期:1987-03-31 00:00:00
abstract::The peroxidase-antiperoxidase (PAP) immunohistochemical technique was used to identify neurons in the basolateral amygdaloid nucleus (BL) that contain vasoactive intestinal polypeptide (VIP), somatostatin (SOM) or cholecystokinin (CCK). Examination of immunostained neurons demonstrated that most, if not all, of these ...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(85)90266-5
更新日期:1985-07-08 00:00:00
abstract::Rats were given unilateral 6-hydroxydopamine (6-OHDA) lesions and subsequently received transplants of fetal ventral mesencephalic tissue into the denervated striatum. Four weeks later transplanted animals were tested for graft-mediated reduction of amphetamine-induced rotational behavior. Subsequently, transplanted a...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(99)01921-6
更新日期:1999-10-16 00:00:00
abstract::The link between the state of energy balance and reproductive function is well known. Thus, signals denoting negative energy balance and the accompanying hyperphagic drive are likely to be factors in the suppression of gonadotropin releasing hormone (GnRH) activity. We have previously found that appetite-regulating sy...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2004.11.066
更新日期:2005-04-18 00:00:00
abstract::Pentobarbital-anesthetized rats received electrical hindpaw stimulation every 10 s to elicit a maximal hindlimb withdrawal reflex. The integrated EMG response in the ipsilateral tibialis anterior was sampled by a computer which also controlled the timing of electrical stimuli applied to the brain. A suppression of the...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(89)91142-6
更新日期:1989-10-09 00:00:00
abstract::It is well established that extracellular choline is transported into central cholinergic nerve terminals by 'high' and 'low' affinity processes to form the neurotransmitter acetylcholine (ACh). The intent of the present investigation was to ascertain whether extracellular acetate might also be transported into centra...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(96)01485-0
更新日期:1997-04-04 00:00:00
abstract::Recently, a novel method for detection of DNA synthesis has been developed based on the incorporation of 5-ethynyl-2'-deoxyuridine (EdU), a thymidine analogue, into cellular DNA and the subsequent reaction of EdU with a fluorescent azide in a copper-catalyzed [3+2] cycloaddition ("Click" reaction). In the present stud...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2009.12.092
更新日期:2010-03-10 00:00:00
abstract::In the course of studies on the responsiveness of mediobasal hypothalamic neurons to the iontophoretic application of cortisol, it was found that positive currents applied to a sodium chloride (1 M) barrel alone, but not to a choline chloride (1 M) barrel, frequently increased the firing of these neurons. Subsequently...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(83)91091-0
更新日期:1983-08-22 00:00:00
abstract::Electrical stimulation of the retina evokes at the optic tract level rhythmic bursts of activity whose temporal structure is predictable from the polarity of the stimulation and the receptive field type. The reaction of lateral geniculate units to this input was studied in fast and slow relay cells as well as in inter...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(78)90135-x
更新日期:1978-08-18 00:00:00
abstract::Arg8-vasopressin (AVP), a circadian clock-controlled gene product, is released from the hypothalamic suprachiasmatic nuclei (SCN) in mice in a circadian fashion. Previously reported differences in two mouse lines, initially selected for thermoregulatory nest-building behavior (building small nests (S-mice) or big nest...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2005.07.068
更新日期:2005-10-26 00:00:00
abstract::The distribution of avian pancreatic polypeptide (APP)-like immunoreactivity (APP-IR) in the chicken retina was investigated by means of immunohistochemistry. The observation from frozen sections showed that APP-IR is localized in the stratified amacrine cells of the first sublayer. Examination of whole-mounts reveale...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(84)90022-2
更新日期:1984-09-17 00:00:00
abstract::Wild red foxes, proverbially cunning carnivores, are investigated for adult hippocampal neurogenesis and morphological characteristics of the dentate gyrus. Adult red foxes harbor almost 15-times more young, doublecortin-positive neurons in their dentate gyrus than domesticated dogs. The number of doublecortin-positiv...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2010.02.075
更新日期:2010-04-30 00:00:00
abstract::The olfactory bulb electroencephalogram (EEG) has been used as a method to imply receptor events12,13. However, experiments to correlate olfactory receptor and bulbar EEG activity in the same species of fish has not been performed. Reported here is the comparison between the simultaneously recorded receptor electroolf...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(82)90170-6
更新日期:1982-10-07 00:00:00
abstract::Three priming injections with the D1/D2 dopamine agonist apomorphine permits a challenge with the D2 agonist quinpirole to elicit robust contralateral rotation and ipsilateral striatal Fos expression in 6-hydroxydopamine lesioned rats. Pretreatment with NMDA glutamate antagonists MK-801 or CPP dose-dependently attenua...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(01)02086-8
更新日期:2001-04-06 00:00:00
abstract::The two neurosteroids 3alpha-hydroxy-5alpha-pregnane-20-one (allopregnanolone; AlloP) and pregnenolone sulfate (PregS) affect neuronal GABA(A) receptors differently. While AlloP mainly potentiates the currents through GABA(A) receptors, PregS reduces such currents. The present study aimed at clarifying the interaction...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2004.11.020
更新日期:2005-02-01 00:00:00
abstract::Recently, the gene encoding the cerebrovascular and neuritic plaque amyloid, a pathologic stigma of Alzheimer's disease (AD), has been molecularly cloned and mapped to human chromosome 21, band q21. Changes in the brains of individuals with trisomy 21 (Down syndrome, DS) over 35 years of age closely resemble AD neurop...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0169-328x(87)90028-3
更新日期:1987-09-01 00:00:00
abstract::The median preoptic nucleus (MnPN) of the hypothalamus contains sleep-active neurons including sleep-active GABAergic neurons and is involved in the regulation of nonREM/REM sleep. The hypocretinergic (HCRT) neurons of the perifornical-lateral hypothalamic area (PF-LHA) and serotonergic (5-HT) neurons of the dorsal ra...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2008.07.115
更新日期:2008-10-09 00:00:00
abstract::We have studied the modulation of hippocampal neuron morphological development in vitro using surfaces derivatized with aminosilane self-assembled monolayers (SAMs). The efficacies of model SAMs, alone, or in combination with adsorbed heparan sulfate glycosaminoglycan (HS), are related to the physical and chemical pro...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(93)90651-3
更新日期:1993-12-10 00:00:00
abstract::A water soluble benzodiazepine, clorazepate, has been used to establish the point of benzodiazepine proliferative arrest in the rat C6 glioma. Clorazepate inhibited C6 proliferation in a dose-dependent manner with an IC50 value of 280 microM, as judged by a nuclei counting procedure. Release of cells from a 48 h expos...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(92)91083-q
更新日期:1992-09-11 00:00:00
abstract::Opiates and cannabinoids are among the most widely consumed habit-forming drugs in humans. Several studies have demonstrated the existence of interactions between both kind of drugs in a variety of effects and experimental models. The present study has been focused to determine whether perinatal delta9-tetrahydrocanna...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(98)00766-5
更新日期:1998-10-05 00:00:00
abstract::The role of adrenal hormones in mediating the increase in blood glucose levels following several stressful stimuli (environmental and pharmacological) was studied. The role for brain norepinephrine systems in the initiation of the BG response to these challenges was investigated as well. There is disagreement as to wh...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(89)90464-2
更新日期:1989-11-13 00:00:00
abstract::The recent development of rodent models of bone cancer pain has started to provide the basis for demonstrating the particular neurochemical and behavioral entity of cancer pain. Behaviourally, both spontaneous pain and hyperalgesia related to mechanical, but not thermal, noxious stimuli have been described in cancer-b...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(03)02284-4
更新日期:2003-04-18 00:00:00
abstract::Humans share the common intuition of a self that has access to an inner 'theater of mind' (Baars, 2003). The problem is how this internal theater is formed. Moving from Cook's view (Cook, 2008), we propose that the 'sentience' present in single excitable cells is integrated into units of neurons and glial cells transi...
journal_title:Brain research
pub_type: 杂志文章,评审
doi:10.1016/j.brainres.2012.01.003
更新日期:2012-10-02 00:00:00