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  • 1
    ISSN: 1432-0533
    Keywords: Gelatinase A ; β-Amyloid ; Microglia ; Alzheimer's disease ; Schwann cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Gelatinase A is an enzyme capable of cleaving soluble β-amyloid protein (βAP), and may function as an α-secretase to produce secretory forms of amyloid precursor protein. We examined gelatinase A immunoreactivity in the brains and posterior roots of neurologically normal, lacunar stroke, Alzheimer disease (AD), amyotrophic lateral sclerosis, progressive supranuclear palsy and myasthenia gravis cases. The gelatinase A antibody stained only microglial cells in the white matter in all the brain tissues. In AD brain, the reactive microglia located in the center of classical senile plaques, as well as in other microglial cells in the gray matter, showed no immunoreactivity. Gelatinase A in white matter microglial cells may play a role in preventing local deposition of βAP. In the posterior root, Schwann cells had positive immunoreactivity. As with other metalloproteases, gelatinase A in Schwann cells may play an antiproliferative role.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    ISSN: 1432-0533
    Keywords: Membrane-type matrix metalloprotease ; Gelatinase A ; Human brain ; Microglia ; β-Amyloid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Membrane-type matrix metalloprotease (MT-MMP) is an activator of gelatinase A (MMP-2), which has previously been found in carcinoma cells. We examined non-neurological and Alzheimer's disease brain tissues for MT-MMP by immunohistochemistry and in situ hybridization. The anti-MT-MMP antibodies gave positive staining of brain microglial cells in all the brain tissues. Positively stained microglia were found only in the white matter. The cells producing MT-MMP protein were also shown to be white matter microglia. These results provide further evidence that activated gelatinase A, which may be a processing enzyme for degradation of β-amyloid protein, may be produced in white matter microglia.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 3
    ISSN: 1432-0533
    Keywords: Key words Membrane-type matrix metalloprotease ; Gelatinase A ; Human brain ; Microglia ; β-Amyloid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Membrane-type matrix metalloprotease (MT-MMP) is an activator of gelatinase A (MMP-2), which has previously been found in carcinoma cells. We examined non-neurological and Alzheimer's disease brain tissues for MT-MMP by immunohistochemistry and in situ hybridization. The anti-MT-MMP antibodies gave positive staining of brain microglial cells in all the brain tissues. Positively stained microglia were found only in the white matter. The cells producing MT-MMP protein were also shown to be white matter microglia. These results provide further evidence that activated gelatinase A, which may be a processing enzyme for degradation of β-amyloid protein, may be produced in white matter microglia.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-0533
    Keywords: Key words Gelatinase A ; β-Amyloid ; Microglia ; Alzheimer's disease ; Schwann cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Gelatinase A is an enzyme capable of cleaving soluble β-amyloid protein (βAP), and may function as an α-secretase to produce secretory forms of amyloid precursor protein. We examined gelatinase A immunoreactivity in the brains and posterior roots of neurologically normal, lacunar stroke, Alzheimer disease (AD), amyotrophic lateral sclerosis, progressive supranuclear palsy and myasthenia gravis cases. The gelatinase A antibody stained only microglial cells in the white matter in all the brain tissues. In AD brain, the reactive microglia located in the center of classical senile plaques, as well as in other microglial cells in the gray matter, showed no immunoreactivity. Gelatinase A in white matter microglial cells may play a role in preventing local deposition of βAP. In the posterior root, Schwann cells had positive immunoreactivity. As with other metalloproteases, gelatinase A in Schwann cells may play an antiproliferative role.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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