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- W2005562758 abstract "This study characterizes the regional changes in vascularity, which accompanies chronic progressive hydrocephalus. Fifteen dogs underwent surgical induction of hydrocephalus and were used for histologic studies. Animals were divided into 4 groups: surgical control, short term (≤5 weeks), intermediate term ((8 weeks), and long term (10 to 12 weeks). Vessel diameter, density, and luminal area were calculated by imaging quantification after manual vessel identification in the cortical gray, white matter, and caudate nucleus. Capillary vessel diameter decreased 23.5% to 30.2% ( P < 0.01) in the caudate, but then returned to normal at 12 weeks. Capillary vessel density decreased 53.5% ( P < 0.05) in the cortical gray, but then increased to 234.8% ( P < 0.01) over surgical controls at 12 weeks. There was no initial decrease in capillary density in the caudate; however, the long-term group capillary density was significantly greater (172.8% to 210.5%, P < 0.01) than surgical controls. Overall, there was a short-term decrease in lumen area, with recovery in the longer term. Glial fibrillary acidic protein (GFAP) immunohistochemistry demonstrated the pattern of GFAP staining and reactive astrocytes differed in the caudate compared with the occipital cortex. This data suggest that an increase in capillary density and diameter may be an adaptive process allowing maintenance of adequate cerebral perfusion and metabolic support in the hypoxic environment of chronic hydrocephalus." @default.
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- W2005562758 date "2001-03-01" @default.
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- W2005562758 title "Cerebrovascular Adaptation in Chronic Hydrocephalus" @default.
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- W2005562758 doi "https://doi.org/10.1097/00004647-200103000-00012" @default.
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