Journal
EXPERIMENTAL NEUROLOGY
Volume 215, Issue 1, Pages 69-76Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.expneurol.2008.09.012
Keywords
Adenosine A(2A) receptor; Traumatic brain injury; Cortical impact injury, glutamate; Inflammatory cytokines
Categories
Funding
- National Natural Science Foundation of China [30328015, 30671918]
Ask authors/readers for more resources
The inactivation of the A(2A) receptor (A(2A)R) has been shown to neuroprotect against brain injury in several animal models of neurological disorders including stroke and Parkinson's disease. However, despite marked elevation of adenosine level, the role of the A(2A) in traumatic brain injury (TBI) remains unclear. In the present study, we investigated the effects of genetic inactivation of A(2A)Rs in the acute stage. The A(2A)R knock-out (KO) mice and their wild-type (WT) littermates Were subjected to cortical impact injury by a dropping weight. The control group Was only craniotomized withoyt TBI. At 24 h post-TBI, the neurological deficit scores of the KO mice were significantly lower than that of WT littermates. Consistent with the behavioral changes, the brain water contents as well as histological changes and the TUNEL-positive cells of the injured cortex of the KO mice were significantly lower than that of WT littermates. Furthermore, the glutamate level in the cerebral spinal fluid (CSF) of the KO mice was also significantly lower than that of WT littermates. In addition, we found that at 12 h post-TBI the mRNA and protein levels of TNF-alpha and IL-1 beta were higher in the KO mice than that in the WT littermates. However, at 24 h post-TBI, the level of TNF-alpha and IL-1 beta continually increased in the WT mice but largely declined in the KO mice. These results suggest that the genetic inactivation of A(2A)R protects against TBI, which is mainly associated with the Suppression of glutamate level. (C) 2008 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available