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  • 1995-1999  (3)
  • Interneuron  (2)
  • Anti-oncogene  (1)
  • triterpenoids
  • 1
    Electronic Resource
    Electronic Resource
    The lateral corticospinal tract and spinal ventral horn in X-linked recessive spinal and bulbar muscular atrophy: a quantitative study (1996)
    Springer
    Acta neuropathologica 93 (1996), S. 1-6 
    Details
    ISSN: 1432-0533
    Keywords: Key words X-linked recessive spinal and bulbar ; muscular atrophy ; Corticospinal tract ; Spinal ventral horn cells ; Alpha motor neuron ; Interneuron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A quantitative study was performed on spinal cord lesions in seven patients with X-linked recessive spinal and bulbar muscular atrophy. The myelinated fiber density of the lateral corticospinal tracts at the T7 cord level was well preserved for both large and small myelinated fibers. On the other hand, neurons in the L4 ventral horn were markedly depleted; marked loss was noted of the large alpha and medium-sized gamma motor neurons located in the lateral and medial nuclei as well as the small neurons in the intermediate zones of the ventral horn. These results suggest that myelinated fiber density and fiber-size distribution in the corticospinal tract are well preserved and that neuronal loss in the ventral horns is not restricted to alpha and gamma motoneurons but also involves small interneurons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050575
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Age-related changes in human spinal ventral horn cells with special reference to the loss of small neurons in the intermediate zone: a quantitative analysis (1996)
    Springer
    Acta neuropathologica 92 (1996), S. 109-114 
    Details
    ISSN: 1432-0533
    Keywords: Key words Spinal ventral horn ; Aging ; Interneuron ; Alpha motor neuron ; Morphometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A cytoarchitectonic study of spinal ventral horn cells was performed to identify age-related changes. The diameter distribution of ventral horn neurons of the fourth lumbar segment of the spinal cord and their size and topographical distributions were investigated in 14 autopsy cases. These cases represented patients of 18–100 years of age who had died of non-neurological diseases. The results indicate that small neurons widely distributed in the intermediate zone of the ventral horn significantly diminished with aging (P 〈 0.0005, r = –0.898), whereas medium-sized and large neurons located in the medial and lateral nuclei showed only a slight decrease with advancing age. The total number of neurons in the whole ventral horn was also noted to decrease significantly with aging (P 〈 0.0005, r = –0.899). While small neurons in the intermediate zone of the ventral horn are thought to be mostly interneurons, their physiological function still remains obscure in many respects. The findings of this study provide insight into age-related cell loss in terms of size and location.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050497
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Introduction of wild-type p53 gene downregulates the expression of H-ras gene and suppresses the growth of bladder cancer cells (1995)
    Springer
    Urological research 23 (1995), S. 311-314 
    Details
    ISSN: 1434-0879
    Keywords: Bladder cancer ; Cell line ; Anti-oncogene ; Gene therapy ; Suppression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Retroviral vectors were used to introduce the wild-type p53 gene into human bladder cancer cell lines BIU-87 and EJ, which express endogenous wt-p53 gene and have a mutation in H-ras gene. The expression of the exogenous wt-p53 gene in cells suppresses the growth of the bladder cancer cells in standard culture and in soft agar and blocks the cell cycle progression in G1. The BIU-87 and EJ cells developed tumors with average volumes of 6.53 cm3 and 6.61 cm3 in nude mice in 9 weeks after inoculation, while the cells transduced with wt-p53 gene failed to form tumors. The expression of H-ras gene in bladder cancer cells was reduced at mRNA level. These results suggest that the overexpression of the wt-p53 gene suppresses the expression of mutant H-ras gene and inhibits the tumor cell growth in vivo and in vitro.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300019
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    Paper (German National Licenses)
    Fulltext
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