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- W1963680756 abstract "Hyperhomocysteinemia (HHcy) is a risk factor for cognitive impairment. The purpose of this study was to determine the temporal pattern of cerebral pathology in a mouse model of mild HHcy, because understanding this time course provides the basis for understanding the mechanisms involved. C57Bl/6 mice with heterozygous deletion cystathionine β-synthase (cbs+/−; Het) were used as a model of mild HHcy along with their wild-type littermates (cbs+/+; WT). Mice were ‘young’ (5.3±0.2 months of age) and ‘old’ (16.6±0.9 months of age). Blood-brain barrier (BBB) permeability was quantified from Evans blue and sodium fluorescein extravasation. Microvascular architecture was assessed by z-stack confocal microscopy. Leukoaraiosis was measured from Luxol fast blue stained slides of paraffin brain sections. Inflammation was quantified using standard antibody-based immunohistochemical techniques. Cognitive function was assessed using the Morris water maze. BBB permeability was significantly greater in Het vs. WT mice at all ages (p<0.05). There were no differences in microvascular architecture among the groups. Compared with all other groups, old Het mice had significantly greater leukoaraiosis, inflammation in the fornix, and cognitive impairment (p<0.05). In mild HHcy, increased permeability of the BBB precedes the onset of cerebral pathology. This new paradigm may play a role in the progression of disease in HHcy." @default.
- W1963680756 created "2016-06-24" @default.
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- W1963680756 date "2013-05-16" @default.
- W1963680756 modified "2023-10-02" @default.
- W1963680756 title "Opening of the Blood-Brain Barrier before Cerebral Pathology in Mild Hyperhomocysteinemia" @default.
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- W1963680756 doi "https://doi.org/10.1371/journal.pone.0063951" @default.
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