期刊
NEUROSCIENCE LETTERS
卷 396, 期 2, 页码 113-116出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2005.11.038
关键词
cannabinoid; CB2 receptor; GFAP; cerebellum; immunohistochemistry
Reports of cannabinoid CB2 receptor protein in the brain have been ambiguous. We therefore tested for CB2 immunoreactivity in the rat brain using immunofluorescence. We detected CB2 labeling in fine fibers in the granule layer. This CB2 labeling did not co-localise with the astrocyte marker glial fibrillary acidic protein (GFAP) and, therefore, the CB2-positive fibers were not astrocytes and were possibly microglial or neuronal. Additionally, strong CB2 labeling was detected in capillary endothelia in the granule, Purkinje cell, and molecular layers. Our results suggest that the role of CB2 receptors in the brain may have been previously underestimated. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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