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Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus.

Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Research Abstract Details 

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  • Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Abstract Text:

    t ohmachiT Ohmachi,t nakamuraT Nakamura,f z zhangF Z Zhang,i taniI Tani,h takagiH Takagi,

    We examined the characteristic features of galanin (GAL)-containing nerve afferents in the intermediolateral nucleus (IML) of the rat lumbosacral spinal cord (L6, S1), i.e., spinal parasympathetic nucleus, by immunocytochemistry at both light and electron microscopic levels. Firstly, the types of synapses formed by GAL-immunoreactive (IR) axon terminals and their post- or presynaptic elements were examined in random ultrathin sections. A total of 109 synapses were examined. Axodendritic (71%) and axo-somatic (20%) synapses were always of the asymmetrical type. Axo-axonic synapses (9%) were occasionally found; GAL-IR axon terminals were either postsynaptic (3%) or presynaptic (6%) to non-IR axon terminals. By confocal laser microscopy, many GAL-IR axon terminals were seen close to cell bodies and proximal dendrites of the IML neurons that were retrogradely labeled with Fluoro-Gold injected into the pelvic ganglion. Some GAL-IR axon terminals were identified to be presynaptic to them under the electron microscope, by restaining for GAL immunoreactivity with the immunoperoxidase method. These findings suggest that the GAL afferents are involved in the parasympathetic motor regulation of pelvic organs via their central synaptic influences upon preganglionic neurons. Finally, hemi-transection of the upper lumbar segments (L1-L3) or unilateral dorsal rhizotomy (L5-S2) did not significantly alter the immunoreactivity for GAL in the IML. These results suggest that GAL afferents do not originate from regions rostral to the IML nor from the dorsal root ganglion, but probably from GAL cells located at least within the lower lumbar segments and/or sacral spinal cord.

    Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Publishing Authors By Initials

    t ohmachiT Ohmachi,t nakamuraT Nakamura,fz zhangFZ Zhang,i taniI Tani,h takagiH Takagi,

    For similar organic chemicals: amidines: stilbamidines research abstracts see: organic chemicals: amidines: stilbamidines research

    PUBMED ID PMID:

    MEDLINE DATE:

    Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Journal Published:

    PUBLICATION TYPE: Journal Article

    Journal: Experimental brain research. Experimentelle Hirnfo

    VOLUME: 109

    Page Numbers: 399-406

    Journal Abbreviation:

    ISSN: 0014-4819

    DAY: 15

    MONTH: Jun

    YEAR: 1996

    Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Information

    Number of References:

    LANGUAGE: eng

    NlmUniqueID: 43312

    Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Keywords Mesh Terms:

    KEYWORDS: Stilbamidines

    MESH TERMS: cytology

    Chemical & Substance for Abstract: Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus. Information

    Substance Name: Galanin

    Registry Number: 88813-36-9

    Grant and Affiliation Information for Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus.

    AFFILIATION: First Department of Anatomy, Osaka City University Medical School, Japan.

    Country: GERMANY

    GERMANY Research PublicationGERMANY Research Publication

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    GRANT:

    ACRONYM:

    MEDLINETA: Exp Brain Res

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