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[Changes of biological clock protein in neonatal rats with hypoxic-ischemic brain damage].

Authors: Li, YF  Jin, MF  Sun, B  Feng, X 
Citation: Li YF, etal., Zhongguo Dang Dai Er Ke Za Zhi. 2013 Jan;15(1):62-6.
Pubmed: (View Article at PubMed) PMID:23336172

OBJECTIVE: To study the effects of biological clock protein on circadian disorders in hypoxic-ischemic brain damage (HIBD) by examining levels of CLOCK and BMAL1 proteins in the pineal gland of neonatal rats. METHODS: Seventy-two 7-day-old Sprague-Dawley (SD) rats were randomly divided into sham-operated and HIBD groups. HIBD model was prepared according to the modified Levine method. Western blot analysis was used to measure the levels of CLOCK and BMAL1 in the pineal gland at 0, 2, 12, 24, 36 and 48 hours after operation. RESULTS: Both CLOCK and BMAL levels in the pineal gland increased significantly 48 hours after HIBD compared with the sham-operated group (P<0.05). There were no significant differences in levels of CLOCK and BMAL proteins between the two groups at 0, 2, 12, 24 and 36 hours after operation (P>0.05). CONCLUSIONS: Levels of CLOCK and BMAL1 proteins in the pineal gland of rats increase significantly 48 hours after HIBD, suggesting that both CLOCK and BMAL1 may be involved the regulatory mechanism of circadian disorders in rats with HIBD.

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RGD Object Information
RGD ID: 10043348
Created: 2015-05-21
Species: All species
Last Modified: 2015-05-21
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.