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  • 1985-1989  (3)
  • Macular mouse  (2)
  • 11 S globulin  (1)
  • Copper therapy  (1)
  • 1
    ISSN: 1432-0533
    Keywords: Macular mouse ; Menkes kinky hair disease ; Copper therapy ; Mitochondrial abnormalities
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The hemizygote of the macular mutant mice, which is clinically and neuropathologically considered to be a model of Menkes kinky hair disease (MKHD), were injected intraperitoneally four times with 10, 20, 20 and 30 μg of cupric chloride on days 4, 6, 8 and 10 after birth, respectively. Their cerebral and cerebellar cortices were chronologically examined by electron microscopy. In the cerebral cortes, only a few abnormal mitochondria with electron-lucent matrix and short peripherally located cristae were scattered in the neurons on day 14, and these had almost entirely vanished after day 21. In the cerebellar cortex, abnormal mitochondria were frequently found on day 14 in the dendrites of the Purkinje cells, whereas they were only occasionally observed in their cytoplasm. Those in the dendrites had decreased in number on day 30, and only a few of them were seen in the cerebellum after day 45. These results show that the copper therapy reduced ultrastructural abnormalities in the hemizygote of this mutant mouse.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 72 (1987), S. 256-260 
    ISSN: 1432-0533
    Keywords: Macular mouse ; Menkes kinky hair disease ; Copper metabolism ; Mitochondrial abnormality ; Cerebrum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The macular mutant mouse was clinically and pathologically examined. The hemizygotes began to show white fur color and curly whiskers around postnatal day 3, then seizures and ataxia around day 8, while the normal littermates did not. The hemizygotes also increased weight gradually from birth to day 9, but then showed weight loss and died around day 15 with severe emaciation. These clinical features resembled those in Menkes kinky hair disease. There were no pathological changes in the cerebral cortex in the hemizygotes on day 7. On day 10, two to three clear vacuoles began to appear in a few neurons in the cerebrum. These neurons with vacuoles increased gradually in number and degenerative neurons were also observed by day 14. Ultrastructurally, they corresponded to giant abnormal mitochondria with an electron-lucent matrix and short peripherally located cristae. Other abnormal mitochondria, which were characterized by an electron-dense matrix with tubular or vesicular cristae, were also observed in the cerebral cortical neurons.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1615-6102
    Keywords: Budding ; Crystalloid ; 11 S globulin ; Protein body ; Pumpkin cotyledon ; Vacuole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Vacuoles were isolated from pumpkin cotyledons at three developmental stages and judged to be pure by light microscopic inspection and marker enzyme assays. The time sequence of structural changes of vacuoles were examined by light microscopic inspection in parallel with their stainability with neutral red. Vacuoles isolated from the early stage of cotyledon development were heterogeneous in size (Ø=2–10 Μm) but stained uniformly with the dye. In contrast, vacuoles isolated from the middle stage were much larger (Ø=5–15 Μm), and there exist one to three cores, unstainable with neutral red, within a single vacuole. Electron microscopic observation confirms that vacuoles contain a few protein cores in cotyledon cells at the middle stage. Characteristically at this stage, it was observable that some large cores (Ø=4Μm) were budding from vacuoles. At the late stage, size of vacuoles becomes much smaller (Ø=6Μm), nearly equal to that of the protein bodies in dry seeds. Importantly, at this stage most of the volume of each vacuole was occupied by a single core, and only a small matrix space was stainable with neutral red. Suborganellar fractionation indicates that the vacuolar cores were identical to the crystalloids deposited in the protein bodies in dry seeds. Overall results strongly provide the evidence that one crystalloid buds from the vacuole during the later stage of seed maturation, giving rise to a protein body.
    Type of Medium: Electronic Resource
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