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  • 1
    Electronic Resource
    Electronic Resource
    Topographic relationship between sagittal Purkinje cell bands revealed by a monoclonal antibody to zebrin I and spinocerebellar projections arising from the central cervical nucleus in the rat (1991)
    Springer
    Experimental brain research 84 (1991), S. 133-141 
    Details
    ISSN: 1432-1106
    Keywords: Monoclonal antibody (mabQ113) ; Zebrin I ; Purkinje cells ; Spinocerebellar projections ; Central cervical nucleus ; Cholera toxin ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231768
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  • 2
    Electronic Resource
    Electronic Resource
    Somatotopic termination of the spino-olivary fibers in the cat, studied with the wheat germ agglutinin-horseradish peroxidase technique (1992)
    Springer
    Experimental brain research 89 (1992), S. 397-407 
    Details
    ISSN: 1432-1106
    Keywords: Spinal cord ; Inferior olivary nucleus ; Somatotopy ; Wheat germ agglutinin horseradish peroxidase ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Terminal sites of the spino-olivary fibers (SOFs) were examined by the anterograde transport of wheat germ agglutinin-horseradish peroxidase in the cat. The tracer was injected at various spinal cord levels from the first cervical to the caudal segments. The SOFs derived from the C1-T1 segments terminated medially in the caudal half (levels II–VIII of Brodal) of the medial accessory olive (MAO), which projects to the A zone of the cerebellar cortex, whereas the SOFs derived from the L6-S1 segments terminated laterally in the caudal half (levels I–VIII) of the MAO. No projections were found from the T2-L5 segments to the MAO. In the dorsal accessory olive (DAO), the SOFs terminated at levels III–XIV; the DAO projects to the B zone and the C1 and C3 zones of the cerebellar cortex. The SOFs derived from the C1-C4 segments terminated in the most medial part of the DAO (levels III–XIV), followed laterally by those from the C5-T1 segments. Further laterally, the SOFs derived from the T2-L5 and the L6-S1 segments terminated in the mediolateral order at levels V–XIV. The SOFs from the L6-S1 segments occupied the most lateral part of the DAO. The present study demonstrates that there is a distinct somatotopic termination of the SOFs in the mediolateral order in the caudal MAO and the DAO.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228255
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  • 3
    Electronic Resource
    Electronic Resource
    Ascending propriospinal afferents to area X (substantia grisea centralis) of the spinal cord in the rat (1998)
    Springer
    Experimental brain research 119 (1998), S. 356-366 
    Details
    ISSN: 1432-1106
    Keywords: Key words Spinal cord ; Central canal ; Substantia grisea centralis ; Propriospinal afferents ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Area X (the tenth area) of the spinal cord is a region surrounding the central canal and extending throughout the spinal cord length. Using anterograde and retrograde labeling techniques, ascending propriospinal projections to area X were examined in the rat. For anterograde tracing of axons, biotinylated dextran was injected into middle-thoracic, lumbar, or sacral-caudal segments. Unilateral injections resulted in bilateral labeling of terminals in area X of all segments rostral to the injections. The distribution of labeled terminals was conspicuous in regions dorsal and lateral to the central canal. The labeled axons were derived from the ventrolateral and the lateral cord. They coursed through lamina VII, giving off terminal axons. While giving off terminal axons in area X, they coursed further rostrally or caudally along the central canal or crossed over the central canal to terminate in the contralateral area X. Possible cells of origin of these ascending afferents were examined after injections of wheat germ agglutinin-horseradish peroxidase into regions surrounding the central canal (area X) at the cervical or thoracic level. Retrogradely labeled neurons were consistently seen in area X, and laminae VII and VIII of the thoracic and lumbar segments. The present study shows that ascending propriospinal axons project to area X of all spinal levels rostral to the cells of origin and suggests that some of these afferents may originate from neurons in area X and laminae VII and VIII. Based on previous data, it is surmised that area X functions, through these intricate interconnections, as a site for integration or modulation of somatic or nociceptive and visceroceptive sensation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002210050351
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  • 4
    Electronic Resource
    Electronic Resource
    Projections from the lateral reticular nucleus to the cerebellar cortex and nuclei in the cat (1976)
    Springer
    Experimental brain research 24 (1976), S. 403-421 
    Details
    ISSN: 1432-1106
    Keywords: Lateral reticular nucleus ; Cerebellum ; Cat ; Experimental anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The fiber projection from the lateral reticular nucleus (LRN) to the cerebellum was examined in the cat. Electrolytic lesions were placed in a confined area of the LRN using a parapharyngeal approach, and the ensuing degeneration was studied in sections stained by the Nauta and the Fink-Heimer methods. Fibers from the LRN ascend the ipsilateral restiform body, terminating bilaterally but chiefly in the ipsilateral cerebellum. In the ipsilateral cortex projections were found to lobules I to V, with denser terminations in sublobules IVb to Ve. The projections are stronger in the intermediate-lateral zones than in the vermis proper. There is also a dense projection to sublobules VId and VIf and to the medialmost part of the simple lobule (HVI). Scanty termination was seen in the medialmost part of crus I. There is a moderate projection to the caudalmost folium of sublobule VIIb and to the rostral folia of sublobule VIIIa and the paramedian lobule. The contralateral projection by fibers crossed within the cerebellum is far less dense but clearcut in the anterior lobe, the rostral folia of lobule VI and the medial part of the simple lobule. In the ipsilateral nuclei strong projections were found to rostral portions of the medial nucleus (M) and the caudal two thirds of the anterior interpositus nucleus (IA) with predominance in the lateral part of the latter. A focal projection was found to rostrodorsal portions of the posterior interpositus nucleus (IP). No projection was found to the lateral nucleus (L). Contralaterally there is a weak projection to the rostral part of M and the medial parts of IA and IP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235006
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  • 5
    Electronic Resource
    Electronic Resource
    Identification and distribution of the spinal and hypophyseal projection neurons in the paraventricular nucleus of the rat. A light and electron microscopic study with the horseradish peroxidase method (1979)
    Springer
    Experimental brain research 35 (1979), S. 315-331 
    Details
    ISSN: 1432-1106
    Keywords: Hypothalamic paraventricular nucleus ; Spinal projection neuron ; Hypophyseal projection neuron ; Horseradish peroxidase ; Electron microscopy ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of labeled neurons in the paraventricular nucleus of the hypothalamus (PVN) was studied following injections of horseradish peroxidase (HRP) into the spinal cord (C8 to T1) or the hypophysis in the rat. Injections were also made in the spinal cord in another group of animals, which were subjected to water deprivation for a period of 3 days, and the PVN of these animals was examined with the electron microscope. Spinal projection neurons (paraventriculospinal tract, PVST, neurons) formed two groups; the dorsal and the ventral groups. They were located within the parvocellular part of the PVN and fused into one at the caudal level. The neurons of the dorsal group were well assembled whereas those of the ventral group were intermingled with paraventriculohypophyseal tract (PVHT) neurons, which were concentrated in the magnocellular part. Electron microscopic observations revealed that HRP-labeled neurons after spinal injections did not contain neurosecretory granules and that they were not affected by water deprivation. On the other hand, neurons containing a number of neurosecretory granules displayed a significant degree of dilatation of the endoplasmic reticulum as the result of water deprivation. These neurons contained no HRP granules. The present findings suggest that the PVST neurons are distinct from the PVHT neurons and that the neuronal groups of both systems form different cell columns within the nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236618
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