Abstract 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 (P0.05). 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.
LI Yong-Fu,JIN Mei-Fang,SUN Bin et al. Changes of biological clock protein in neonatal rats with hypoxic-ischemic brain damage[J]. CJCP, 2013, 15(1): 62-66.
LI Yong-Fu,JIN Mei-Fang,SUN Bin et al. Changes of biological clock protein in neonatal rats with hypoxic-ischemic brain damage[J]. CJCP, 2013, 15(1): 62-66.
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