Abstract:
:Intersegmental interneurons with relatively short axons perform an important role in the coordination of limb movement but surprisingly little is known about their organization and how they contribute to neuronal networks in the adult rat. We undertook a series of anatomical tract-tracing studies to label cell bodies and axons of intersegmental neurons in the lumbar cord and characterized their neurochemical properties by using immunocytochemistry. The b-subunit of cholera toxin was injected into L1 or L3 segments of seven rats in the vicinity of lateral or medial motor nuclei. In L5 lumbar segments, cells were found to be concentrated in contralateral lamina VIII, and in ipsilateral lamina VII and laminae V-VI following injections into the lateral and medial motor nuclei respectively. About 25% of labelled cells contained calbindin or calretinin or a combination of both. Calbindin positive cells were mainly distributed within the ipsilateral side of the L5 segment, especially within the ipsilateral dorsal horn whereas there was a concentration of calretinin cells in contralateral lamina VIII. A small population of cells around the central canal were cholinergic. We also examined axon terminals that projected from L1/3 to the L5 contralateral lateral motor nucleus. The majority of these axons were excitatory (75%) and made direct contacts with motoneurons. However, most inhibitory axons in L5 contained a mixture of GABA and glycine (20%) and about 22% of the total population of axons contained calbindin. In contrast, 19% of all intra-segmental axons in the L3 contralateral lateral motor nucleus were found to be purely glycinergic and 17% contained a mixture of GABA and glycine. This study shows that short range interneurons form extensive ipsi- and contralateral projections within the lumbar enlargement and that many of them contain calcium binding proteins. Those projecting contralaterally to motor nuclei are predominantly excitatory.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Liu TT,Bannatyne BA,Maxwell DJdoi
10.1016/j.neuroscience.2010.09.012subject
Has Abstractpub_date
2010-12-01 00:00:00pages
461-84issue
2eissn
0306-4522issn
1873-7544pii
S0306-4522(10)01233-9journal_volume
171pub_type
杂志文章相关文献
NEUROSCIENCE文献大全abstract::Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder for which there is currently no effective treatment. Studies indicate that enhancing autophagy in mouse models of neurodegenerative disease can ameliorate the behavioral symptoms and pathological damage associated with the accumulation of pathol...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.03.061
更新日期:2015-07-09 00:00:00
abstract::We investigated immunohistochemically the cellular localization of multifunctional type II Ca2+/calmodulin-dependent protein kinase in the rat basal ganglia and intrastriatal grafts derived from fetal striatal primordia, in comparison with that of calcineurin, a reliable marker for striatal medium-sized spinous neuron...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)90470-7
更新日期:1994-10-01 00:00:00
abstract::The distribution of neuropeptide Y immunoreactive cell bodies in relation to various types of catecholamine-containing cell bodies in the rat brain was analyzed immunohistochemically using antisera to tyrosine hydroxylase, dopamine beta-hydroxylase and phenylethanolamine N-methyltransferase. Coexistence of the peptide...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(84)90036-8
更新日期:1984-02-01 00:00:00
abstract::The amygdaloid complex plays an essential role in auditory fear conditioning of the Pavlovian type. The available evidence suggests that the lateral nucleus is the input station of the amygdala for auditory conditioned stimuli, whereas the central medial nucleus is the output for conditioned fear responses. However, t...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(95)00272-k
更新日期:1995-11-01 00:00:00
abstract::In the ventral mesencephalon, two neurotrophic factors, brain-derived neurotrophic factor and glial cell line-derived neurotrophic factor, have been shown previously to have similar effects on the survival of dopaminergic neurons. Here, we compared the signaling mechanisms for brain-derived neurotrophic factor and gli...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(99)00129-3
更新日期:1999-01-01 00:00:00
abstract::During the early developmental period, long-term potentiation (LTP) can be induced in both vertical and horizontal connections in the rat visual cortex. However, the temporal difference in LTP change between the two pathways during animal development remains unclear. In this study, LTP in vertical (from layer IV to la...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2017.03.017
更新日期:2017-05-14 00:00:00
abstract::The effects of tetanus toxin and its light and heavy chain subunits on vasopressin release were investigated in digitonin-permeabilized neurosecretory nerve terminals isolated from the neural lobe of the rat pituitary gland. Exocytosis was induced by challenging the permeabilized nerve endings with micromolar calcium ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90068-d
更新日期:1992-01-01 00:00:00
abstract::Stimulant-induced exocytosis has been demonstrated in sympathetic ganglia of the rat by in vitro incubation of excised ganglia in the presence of tannic acid, which stabilizes vesicle cores after their exocytotic release. Sites of exocytosis were observed along non-synaptic regions of the surfaces of neuron somata and...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(96)00664-1
更新日期:1997-10-01 00:00:00
abstract::Mutations in the PI3K/Akt/mTOR signaling pathway or in the upstream negative regulator Pten cause human brain overgrowth disorders, such as focal cortical dysplasia and megalencephaly, and are characterized by the presence of hypertrophic neurons. These disorders often have a pediatric onset and a high comorbidity wit...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2017.04.026
更新日期:2017-06-23 00:00:00
abstract::Substantial human and animal data suggest a correlation between hypertension and memory impairment that may appear prior to overt manifestations of cerebrovascular pathology. It is unclear, however, whether hypertension plays a causal role in these memory deficits, whether hypertension and cognitive impairment are eac...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(00)00569-8
更新日期:2001-01-01 00:00:00
abstract::Recent studies have demonstrated that astrocytes express a variety of ion channels and neurotransmitter receptors and can modulate the activity of neurons. Since a single astrocyte makes tight contacts with many neighboring neuronal cells, they can provide efficient and wide modulation of neuronal networks. Here, we p...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.04.024
更新日期:2005-01-01 00:00:00
abstract::Nitric oxide has been proposed to act as an intercellular messenger in central brainstem circuits controlling gastrointestinal motility. In particular, a subpopulation of preganglionic vagal neurons of the dorsal motor nucleus of the vagus have been shown to be reduced nicotinamide adenine dinucleotide phosphate(NADPH...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(98)00586-7
更新日期:1999-05-01 00:00:00
abstract::Repeated induction of a temporary threshold shift (TTS) may result in a permanent threshold shift (PTS) and is thought to be associated with early onset of age-related hearing loss (ARHL). The possibility that a PTS might be induced by administration of repeated TTS-inducing noise exposures (NEs) over a short period d...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2019.12.049
更新日期:2020-03-01 00:00:00
abstract::The course of the ascending pathways originating from the anterior gustatory and posterior visceral sensory part of the solitary tract nucleus and the topographic organization of the projections to the hypothalamus in the rat were studied with anterogradely transported Phaseolus vulgaris lectin. In general, the poster...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(89)90441-7
更新日期:1989-01-01 00:00:00
abstract::Specific acetylcholinesterase and non-specific cholinesterases are present in all three lobes of the rat pituitary gland. This paper describes two new observations on hypophyseal acetylcholinesterase. Firstly, a prolonged increase of neurohormone secretion evoked by dehydration and sodium loading was accompanied by a ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(87)90132-1
更新日期:1987-05-01 00:00:00
abstract::The effect of muscarinic agonists on the spontaneous release of [3H]GABA was investigated in vitro on rat substantia nigra slices. Acetylcholine (5 x 10(-5) M) in the presence of eserine (5 x 10(-5) M) induced a 12.3% increase of the spontaneous release of [3H]GABA. Similarly, carbachol (5 x 10(-4) M) enhanced by 9% t...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)90567-3
更新日期:1994-12-01 00:00:00
abstract::It was demonstrated with autoradiographic methods that a tract of thin fibers, which is for the most part distinct from the brachium conjunctivum and its crossed descending limb, can be followed from the cerebellar nuclei to the inferior olive. Neurons from all regions of the interposed and dentate nuclei contribute t...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(87)90044-3
更新日期:1987-06-01 00:00:00
abstract::The visual word form area (VWFA) has been consistently identified as a crucial structure in visual word processing. Nevertheless, it is controversial whether the VWFA represents external visual information (e.g., case information) of visual words. To address that question, we functionally localized VWFA at the group l...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2020.10.040
更新日期:2021-01-01 00:00:00
abstract::Mapping observed actions into the onlooker's motor system seems to provide the neurofunctional mechanisms for action understanding. Subthalamic nucleus (STN) local field potential (LFP) recordings in patients with movement disorders disclosed that network oscillations in the beta range are involved in conveying motor ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.04.018
更新日期:2009-07-21 00:00:00
abstract::CF-1 male mice were trained in an inhibitory avoidance task using a high footshock (1.2mA, 50Hz, 1 s) in order to reduce the influence of extinction on retention performance. A single session of 5 min exposure to a hole-board (nose-poke behavior), either immediately after training or the first retention test (memory r...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.04.068
更新日期:2005-01-01 00:00:00
abstract::In order to develop a rodent model displaying a progressive degeneration of the dopamine neurons of the substantia nigra, we bilaterally injected the tracer substance FluoroGold into the terminal field of the nigrostriatal projection, i.e. the striatum. One week later, rats received unilateral injections of 20 microgr...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)90605-x
更新日期:1994-03-01 00:00:00
abstract::Neuronal gap junctions in the brain, providing intercellular electrotonic signal transfer, have been implicated in physiological and behavioral correlates of learning and memory. In connexin31.1 (Cx31.1) knockout (KO) mice the coding region of the Cx31.1 gene was replaced by a LacZ reporter gene. We investigated the i...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2008.01.077
更新日期:2008-05-02 00:00:00
abstract::Little is known about the G protein-coupled receptor desensitization process during pregnancy. Wistar pregnant rats were treated with (-)N(6)-phenylisopropyladenosine (R-PIA), an adenosine A(1) receptor (A(1)R) agonist, in their drinking water during pregnancy, and the effect on A(1)R/adenylyl cyclase system was studi...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.06.050
更新日期:2009-10-06 00:00:00
abstract::Gonadal hormones are known to influence the regulation of emotional responses and affective states. Whereas fluctuations in progesterone and estradiol are associated with increased vulnerability for mood disorders, testosterone is mainly associated with social dominance, aggressive, and antisocial behavior. Here, we r...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2011.04.042
更新日期:2011-09-15 00:00:00
abstract::The mechanical response of human m. flexor pollicis longus to slow (3.2 degrees/s) linear stretch by 5.5 degrees was measured during sustained (45-60 s, 9-13.5 p.p.s.) unfused tetanus evoked by electrical stimulation. The stiffness increased during unfused tetanus. At the late phase of unfused tetanus it was 1.8 +/- 0...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(97)00130-9
更新日期:1997-09-01 00:00:00
abstract::Foetal mouse hippocampal primordia from mice homozygous for the Thy-1.1 allele were transplanted into the hippocampal region of adult histocompatible mice, homozygous for the Thy-1.2 allele. After survival periods of two months to one year the transplants consisted of a discrete tissue mass, well fused with the host, ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(85)90096-x
更新日期:1985-12-01 00:00:00
abstract::Working memory for order information is mediated by different cognitive mechanisms that rely on different neural circuits. Here we discuss evidence that order memory involves mechanisms that range from general supervisory processes to process that maintenance fine-grained temporal position information. We suggest that...
journal_title:Neuroscience
pub_type: 杂志文章,评审
doi:10.1016/j.neuroscience.2005.08.024
更新日期:2006-04-28 00:00:00
abstract::Tau hyperphosphorylation leads to formation of paired helical filament/neurofibrillary tangles, the hallmark lesion seen in Alzheimer's disease (AD) brain. An imbalanced regulation in protein kinases and protein phosphatases in the affected neurons is proposed to be a reasonable causative factor to the disease process...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(02)00697-8
更新日期:2003-01-01 00:00:00
abstract::Hepatic encephalopathy is characterized by disturbances of motor and cognitive functions involving the basal ganglia. So far no standards for assessment of neuropsychiatric abnormalities (disorders of sleep, mood, anxiety and personality) in subclinical hepatic encephalopathy have been defined. Using an animal model o...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.05.031
更新日期:2005-01-01 00:00:00
abstract::Non-invasive criteria determining the progress of brain healing are especially important in aging, providing a case-specific therapeutic strategy in populations with dysregulated neurorepair mechanisms. We hypothesized that temporal evolution of magnetic resonance imaging (MRI) of T2 tissue relaxation values correlate...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2014.09.028
更新日期:2014-12-26 00:00:00