Results 261 to 270 of about 1,450,758 (311)
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Role of Cholinergic Mossy Fibers in Vestibular Nuclei in the Development of Vestibular Compensation
Acta Oto-Laryngologica, 2001Several lines of evidence have suggested that acetylcholine is a possible neurotransmitter/neuromodulator involved in vestibular compensation. However, details of cholinergic effective sites during vestibular compensation remain unclear. In this study, we selectively damaged the rat vestibulo-floccular cholinergic mossy fibers using ethylcholine ...
Tadashi Kitahara +5 more
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The cholinergic system modulates kindling and kindling‐induced mossy fiber sprouting
Synapse, 2002AbstractIn a previous study, our laboratory demonstrated that the intraventricular infusion of nerve growth factor (NGF) accelerated kindling rates and enhanced mossy fiber sprouting in the absence of noticeable kindling‐associated neuronal loss.
Margaret Fahnestock +3 more
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Journal of Visualized Experiments, 2020
The length of cholinergic or other neuronal axons in various brain regions are often correlated with the specific function of the region. Stereology is a useful method to quantify neuronal profiles of various brain structures. Here we provide a software-based stereology protocol to estimate the total length of cholinergic fibers in the nucleus basalis ...
Prabhakar Singh +2 more
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The length of cholinergic or other neuronal axons in various brain regions are often correlated with the specific function of the region. Stereology is a useful method to quantify neuronal profiles of various brain structures. Here we provide a software-based stereology protocol to estimate the total length of cholinergic fibers in the nucleus basalis ...
Prabhakar Singh +2 more
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Brain Research, 1977
Placement of electrolytic lesions in the zona incerta or parafascicular nucleus of the rat forebrain resulted in a marked reduction of choline acetyltransferase (ChAc) activity in the head of the striatum 2-4 weeks later. Lesions of the habenula did not cause this effect implying that concomitant destruction of the fasciculus retroflexus with the ...
Jeffrey K. Saelens, John P. Simke
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Placement of electrolytic lesions in the zona incerta or parafascicular nucleus of the rat forebrain resulted in a marked reduction of choline acetyltransferase (ChAc) activity in the head of the striatum 2-4 weeks later. Lesions of the habenula did not cause this effect implying that concomitant destruction of the fasciculus retroflexus with the ...
Jeffrey K. Saelens, John P. Simke
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Selective loss of cholinergic sudomotor fibers causes anhidrosis in Ross syndrome
Annals of Neurology, 2002AbstractRoss syndrome consists of segmental hyperhidrosis with widespread anhidrosis, Adie syndrome, and areflexia. The cause of this disorder is unknown. Selective degeneration of cholinergic fibers or of neural crest–derived structures has been suggested.
Sommer, Claudia +4 more
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Hypothalamic Reward Mechanism: Two First-Stage Fiber Populations with a Cholinergic Component [PDF]
Science, 1985 Refractory periods were estimated for fibers of the hypothalamic substrate of brain stimulation reward. Two nonoverlapping populations were evident: a homogeneous fast population and a more heterogeneous slow population. Cholinergic blockade eliminated the contribution of the fast but not the slow fibers, while dopaminergic blockade reduced responding ...
Roy A. Wise, Alain Gratton
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Arthritis and cholinergic transition of sympathetic nerve fibers
2016Fragestellung. Die Dichte von sympathischen Nervenfasern, welche über die Expression von Tyrosin-hydroxylase (TH, Schlüsselenzym der Katecholaminbiosynthese) analysiert wird, ist bei Arthritis im entzündeten Gewebe erniedrigt. Allerdings ist bekannt, dass sympathische Nervenfasern unter bestimmten Bedingungen, wie sie beispielsweise während der ...
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American Journal of Physiology-Gastrointestinal and Liver Physiology, 1997
Muscles of the gastroesophageal junction that contribute to the lower esophageal sphincter (LES) include clasplike semicircular fibers on the right and slinglike oblique gastric fibers on the left. This study examined whether in vitro differences between the sling and clasp muscles could account for the in vivo asymmetry of LES pressure and its ...
Nicholas E. Diamant, H. G. Preiksaitis
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Muscles of the gastroesophageal junction that contribute to the lower esophageal sphincter (LES) include clasplike semicircular fibers on the right and slinglike oblique gastric fibers on the left. This study examined whether in vitro differences between the sling and clasp muscles could account for the in vivo asymmetry of LES pressure and its ...
Nicholas E. Diamant, H. G. Preiksaitis
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Evidence for the cholinergic nature of cockroach giant fibers: use of specific degeneration
Journal of Comparative Physiology ? A, 1978Following specific degeneration of giant fibers, ascertained electrophysiologically, up to 32% decrease of choline acetyltransferase (CAT) activity occurs in the cockroach abdominal ventral cord. A smaller decrease was found in the thoracic region, in accordance with morphological data on the relative contribution of giant fibers to the cord volume ...
Daniel Dagan, Y. Same
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N-cholinergic facilitation of glutamate release from an individual retinotectal fiber in frog
Visual Neuroscience, 2001Nicotinic acetylcholine receptors are localized on retinotectal axons' terminals in lower vertebrates. The effects of activation of these receptors by endogenous acetylcholine were observed under stimulation of mass optic fibers. This study was designed to determine whether endogenous acetylcholine facilitates frog retinotectal transmission ...
Gutmaniene N, Kuras A
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