大麻二酚对创伤性脑损伤大鼠脑组织AQP4表达的影响

doi:10.13418/j.issn.1001-165x.2023.2.10

Abstract

Abstract: Objective To explore the expression of aquaporin 4 (AQP4) in the brain tissue of rats with traumatic brain injury (TBI) and its time-course change pattern, and to explore the intervention effect of cannabidiol (CBD) on AQP4. Methods The TBI model of rats was prepared by the modified “Feeney free fall method”, and then randomly divided into six injury groups and six CBD intervention groups at 8 h, 1 d, 2 d, 3 d, 5 d, and 7 d after injury. The normal control group (Control group) and the sham operation group (Sham group) were also established. Immunofluorescence single-label staining and Western blotting were used to observe the expression of AQP4 protein in the injured lateral cortical area in each group of rats. Results Immunofluorescence staining result showed that compared with Sham group, AQP4 positive expression gradually increased over time after TBI injury, peaked at 3 d and then decreased at 5 d and 7 d (P<0.05), but still higher than that of Sham group. AQP4 positive expression decreased at 1 d, 2 d, 3 d, and 5 d after CBD intervention (P<0.05). Western blotting result showed that compared with Sham group, AQP4 protein expression increased at 8 h, 1 d, 2 d, and 3 d after TBI injury (P<0.05). AQP4 protein expression decreased after CBD intervention (P<0.05). Conclusions TBI can increase the expression of AQP4, reaching a peak at 3 d. While CBD can inhibit the overexpression of AQP4, the effect of intervention on 1 d, 2 d, and 3 d is the most obvious.

Key words: Traumatic brain injury, , , Cannabidiol, , , AQP4, , , Rats

CLC Number:

R742

Wu Deye, Cao Yan, Li Hengxi, Wu Douwei, Li Jiali, Ling Tenghan, Wu Haiying, Li Ping. Effects of cannabidiol on AQP4 expression in brain tissue of rats with traumatic brain injury[J]. Chinese Journal of Clinical Anatomy, 2023, 41(2): 178-181.

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Effects of cannabidiol on AQP4 expression in brain tissue of rats with traumatic brain injury

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