Three-dimensional measurement of cerebral microvascular plasma perfusion, glial fibrillary acidic protein and microtubule associated protein-2 immunoreactivity after embolic stroke in rats: a double fluorescent labeled laser-scanning confocal microscopic study.

作者: Zheng Gang Zhang , Lucille Bower , Rui Lan Zhang , Song Chen , Joseph P Windham

DOI: 10.1016/S0006-8993(99)01886-7

关键词: Microtubule-associated protein 2IschemiaCentral nervous systemBiologyPathologyPerfusionMicrocirculationFluorescein isothiocyanateCortex (anatomy)Glial fibrillary acidic protein

摘要: Early astroglial response to post-ischemic microvascular hypoperfusion may contribute progressive cerebral microcirculatory impairment and ischemic neuronal injury. Using laser-scanning confocal microscopy three fluorescent probes, we measured in three-dimensions plasma perfusion, astrocytic reactivity, injury assessed by fluorescein isothiocyanate (FITC)-dextran, GFAP immunoreactivity, microtubule associated protein-2 (MAP2) respectively, rats subjected 2 h of middle artery occlusion. Three-dimensional quantitative analysis revealed that embolic ischemia resulted a significant (P<0.05) reduction perfusion the ipsilateral cortex subcortex. Tissue within subcortex with low exhibited increase immunoreactivity compared homologous contralateral tissue. re-constructed images showed prominent immunoreactive astrocytes surrounded large vessels decreased downstream capillaries MCA territory when Triple fluorescence probe-stained sections tissue increased was accompanied MAP2 immunoreactivity. The present study demonstrates an induces early reactive further perfusion. three-dimensional imaging used provides means investigate parenchymal cellular responses changes after

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