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 2 、 Ischemia 、 Central nervous system 、 Biology 、 Pathology 、 Perfusion 、 Microcirculation 、 Fluorescein isothiocyanate 、 Cortex (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