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Title: [Time-order expression of caspase-3 and iNOS in contused human brain tissue]. Author: Cai HX, Li ZR, Cheng YB, Dong GK, Zhong JF, Yin WJ. Journal: Fa Yi Xue Za Zhi; 2009 Aug; 25(4):241-5. PubMed ID: 19788069. Abstract: OBJECTIVE: To investigate the expression of caspase-3 and iNOS in different intervals and to provide evidence for estimation of injury intervals after brain contusion in human. METHODS: Thirty cases died of serious brain injury were included into the injury groups and 5 cases died of non-brain injury were served as control group. To analyze the changes of caspase-3 and iNOS expression in brain samples at different intervals (2h, 4-8h, 10-14h, 1-2d, 3-5d, 8-11d) by immunohistochemistry and auto-image analysis system. RESULTS: The level of caspase-3 expression started to increase in 2 hours after brain contusion compared to the control group (P<0.05). The level of caspase-3 expression continued to increase in 1-2 days and maintained high level in 3-5 days compared to the control group (P<0.05), then decreased gradually. There was no statistically significant difference between the expression level of iNOS in 2 hours with the control group (P>0.05). But the expression level of iNOS began to increase in 4-8 hours after brain contusion and reached its maximum in 1-2 days, then decreased. Weak expression of iNOS still could be detected in 8-11 days. CONCLUSION: The expression of caspase-3 and iNOS can be used as effective evidence for human brain contusion interval.[Abstract] [Full Text] [Related] [New Search]