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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Experimental brain research 81 (1990), S. 85-94 
    ISSN: 1432-1106
    Schlagwort(e): Spinocerebellar neurons ; Dorsal root projections ; Double labeling ; Choleragenoid ; Fluorogold ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The aim of this study has been to investigate projections to spinocerebellar cell groups from lumbar dorsal root ganglia (DRGs) in the rat. The binding subunit of cholera toxin conjugated to horseradish peroxidase (B-HRP) was used to label primary afferent fibers. Spinocerebellar neurons were labeled retrogradely by Fluoro-Gold (FG). To determine the orientation of dendrites, retrogradely labeled spinocerebellar neurons were studied, following injections of wheat germ agglutinin conjugated horseradish peroxidase (WGA-HRP) into cerebellum. FG or WGA-HRP labeled neurons were found mainly in laminae V and VII, in the lateral group of lamina IX, in Clarke's column (CC) and in the dorsal funiculus. B-HRP labeled primary afferent fibers overlapping with FG labeled cells were observed at all these locations after injections of B-HRP into different DRGs. The overlap in lamina V was found mainly medially and dorsolaterally. CC was found to receive dense projections from DRGs L1–6. In the lumbar part of CC, labeling from DRGs L4–5 overlapped and was distributed over the entire mediolateral extent of the CC, whereas labeling from DRGs L1–3 was somatotopically organized and projected to successively more dorsomedial areas. The central area of lamina VII showed moderate labeling from DRGs L3–5. The lateral group of lamina IX received only smaller amounts of labeled fibers from DRGs L3–5.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-1106
    Schlagwort(e): Monoclonal antibody (mabQ113) ; Zebrin I ; Purkinje cells ; Spinocerebellar projections ; Central cervical nucleus ; Cholera toxin ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We have examined the topographic relationship between the sagittal bands of zebrin I immunoreactive Purkinje cells revealed by a monoclonal antibody, mabQ113, and the distribution of spinocerebellar fibers originating from the central cervical nucleus in the rat. The mossy fiber terminals were anterogradely labeled following injections of cholera toxin subunit B into the C1–C3 segments and visualized immunohistochemically. Zebrin I positive Purkinje cells appeared in seven sagittal bands (P1+ to P7+ bands). In lobules I–V of the anterior lobe, labeled mossy fiber terminals were distributed in the midline region, subjacent to the P1+ bands and at around 0.5 mm from the midline region, subjacent to the P2+ band in the lateral A1 to the medial A2 zones of Voogd et al. (1985). Labeled terminals were seen in the entire B zone and those distributed in its medial part were related to the P3+ band. In lobule VIII, labeled terminals were seen subjacent to the P1+, P2+ and P3+ bands, which were located in the lateral A1–A3 (or B) zones. In the copula pyramidis, labeled terminals appeared subjacent to the P4+, P5+ and the P6+ bands in the C1 and C2 zones (or the C1-C3 zones). Although the labeled terminals were seen beneath the zebrin I positive bands, the borders of terminal distribution were not well-delineated, and did not respect the borders of zebrin I positive bands.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-1106
    Schlagwort(e): Cutaneous nerve projections ; Dorsal horn ; Clarke's column ; Choleragenoid ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The aim of the present study has been to investigate the spinal projections of cutaneous hindlimb afferents particularly to the deep dorsal horn and to Clarke's column (CC), by using the B-subunit of cholera toxin conjugated to horseradish peroxidase. Injections into three different cutaneous hindlimb nerves in adult rats resulted in dense labeling in the dorsal horn laminae IIi-IV/V, moderate labeling in lamina I and modest labeling in dorsomedial parts of CC. Footpad injections gave similar results, except for a lack of labeling in CC and only weak labeling in laminae I and V. The results suggest that B-HRP should be a useful marker for studying cutaneous myelinated nerve fiber projections to the rat spinal cord.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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