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- W167577630 abstract "A propriospinalis neuronokat a lumbalis gerincvelői hatso szarv I-IV. laminainak medialis, illetve lateralis reszebe adott Phaseolus vulgaris leucoagglutinin, vagy biotinizalt dextranamin injekciokkal jelolve ipsilateralisan medio-medialis es latero-lateralis rovid, latero-lateralis hosszu, es egy medio-lateralis projekciot, valamint a ket hatso szarv lateralis reszeit osszekapcsolo commissuralis osszekottetest talaltunk. A jelolt axon terminalisokon konfokalis mikroszkopos neurokemiai analizist vegeztunk ugy, hogy azok glutamat tartalmat VGLUT 1, 2, 3, a GABA szintezist GAD 65/67, glycin tartalmat GLYT2 fluoreszcens immuncytokemiai reakcioval, met-enkephalin tartalmat immunogold reakcioval mutattuk ki. Postembedding immunogold technikaval a terminalisokat GABA-ra es glycinre reagaltatva elektronmikroszkopos szinaptologiai elemzest vegeztunk. Azt talaltuk, hogy a gerincvelő ketoldali hatso szarva kozotti reciprok commissuralis kapcsolat elsődlegesen GABA es/vagy glycin medialt gatlo mechanizmusokon keresztul fejti ki hatasat ellenoldali celsejtjeire. Az azonos oldali medio-medialis es latero-lateralis rovid interszegmentalis projekciok, valamint a medio-lateralis intraszegmentalis projekcio elsődlegesen serkentők. Megvizsgaltuk a propriospinalis neuronok es a primer afferensek kozotti kapcsolatokat is. Az I-II. lamina medialis reszeben levő propriospinalis neuronok főleg peptiderg, kisebb szamban nem-peptiderg primer afferensektől kapnak bemeneteket. | Medial and lateral areas of laminae I-IV of the spinal dorsal horn are different in their propriospinal connections, as it was demonstrated in one of our recent studies injecting Phaseolus vulgaris leucoagglutinin or biotinylated dextran amine into medial or lateral areas of laminae I-IV of the lumbar spinal cord. The medial area gives off medio-medial and medio-lateral, whereas the lateral area establishes latero-lateral and commissural propriospinal projections. By using a combination of neural tracing and immunocytochemical detection of neural markers like vesicular glutamate transporters, glutamic acid decarboxylase, glycine transporter, and met-enkephalin (which are characteristic of various subsets of excitatory and inhibitory neurons), we investigated the distribution, synaptic relations, and neurochemical characteristics of axon terminals in the commissural, medio-lateral, medio-medial, and latero-lateral propriospinal projections. The results indicate that the substantial reciprocal commissural projection is primarily inhibitory, but it contains excitatory fibres as well. The ipsilateral medio-medial and latero-lateral short intersegmental projections, and the medio-lateral intrasegmental projection proved to be mostly excitatory. Using CGRP and Bandeiraea simlicifolia isolectin B4 cytochemical reactions for detection of the primary afferent fibres, we found that propriospinal neurons receive mostly peptidergic, and a few non-peptidergic primary afferent inputs." @default.
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- W167577630 date "2007-01-01" @default.
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- W167577630 title "Propriospinalis és supraspinalisan projiciáló neuronok szinaptikus kapcsolatrendszere a gerincvelői hátsó szarv I-IV. lamináiban = Synaptic relations of propriospinal and supraspinally projecting neurons in laminae I-IV. of the spinal dorsal horn" @default.
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