丁苯酞对睡眠剥夺大鼠额叶小胶质细胞活化的影响*

doi:10.12047/j.cjap.5908.2020.024

摘要/Abstract

摘要： 目的: 探讨丁苯酞对慢性睡眠剥夺后大鼠脑部额叶小胶质细胞活化及炎症因子的影响。方法: 本实验共分为4组(n＝8):空白对照组、大平台对照组、慢性睡眠剥夺组、丁苯酞干预组。慢性睡眠剥夺组和丁苯酞干预组采用改良多平台睡眠剥夺法建立大鼠慢性睡眠剥夺模型,对大鼠进行每日18 h,连续28 d的睡眠剥夺。在这28 d内,空白对照组大鼠不进行睡眠干预,大平台对照组大鼠放于大平台箱内。丁苯酞干预组在睡眠剥夺28 d结束后按100 mg/kg腹腔注射丁苯酞针剂,每日1次,共14 d,其他组大鼠在这14 d内腹腔注射同样剂量的生理盐水。腹腔注射结束后各组大鼠取脑组织,免疫组化检测额叶皮质离子钙接头分子(Iba-1)阳性细胞并计数,Western blot检测额叶诱导型一氧化氮合成酶(iNOS)、精氨酸酶1(Arg1)表达,实时定量PCR检测额叶白介素-1(IL-1)mRNA、IL-6 mRNA、肿瘤坏死因子-α(TNF-α) mRNA。结果: 与空白对照组、大平台对照组比较,慢性睡眠剥夺组额叶Iba-1阳性细胞体积增大伴细胞突起增多,且细胞数增加(P均＜0.05),iNOS和IL-1 mRNA、IL-6 mRNA、TNF-α mRNA表达增加,而Arg1表达减少(P均＜0.05);与慢性睡眠剥夺组比较,丁苯酞干预组额叶Iba-1细胞数减少(P＜ 0.05),iNOS和IL-1 mRNA、IL-6 mRNA、TNF-α mRNA表达减少(P均＜0.05)而Arg1表达无明显改变。结论: 丁苯酞可抑制慢性睡眠剥夺导致的大鼠额叶小胶质细胞活化、减少慢性睡眠剥夺后的炎症因子表达。

关键词: 慢性睡眠剥夺, 小胶质细胞, 表型, 炎症因子, 丁苯酞, 大鼠

Abstract: Objective: To evaluate the effects of butylphthalide on microglia activation and inflammatory factors in frontal lobe of rats after chronic sleep deprivation. Methods: Rats were divided into four groups(n＝8): control group, platform group, chronic sleep deprivation group and butylphthalide intervention group. Chronic sleep deprivation was performed in rats of chronic sleep deprivation group and butylphthalide intervention group for 18 h per day using the multiple platforms method, and sleep deprivation lasted for 28 days. At the same time, rats in platform group were put in platform, while rats in control group were in normal sleep. After 28 days of sleep deprivation, rats in butylphthalide intervention group were intraperitoneally injected with butylphthalide 100 mg/kg for 14 days, meanwhile rats in other groups were intraperitoneally injected with saline. Then brains were collected and ionized calcium binding adaptor molecule-1 (Iba-1) positive cells in cortex in frontal lobe were studied and counted. The expressions of inducible nitric oxide synthase (iNOS) and arginase1 (Arg1) in frontal lobe were detected by Western blot, and the mRNA levels of interleukin-1 (IL-1), IL-6, tumor necrosis factor-α (TNF-α) were determined by real-time PCR. Results: Compared with control or platform group, the Iba-1 positive cells in chronic sleep deprivation group were large with long process, and increased cell counts were also found in the chronic sleep deprivation group (all P＜0. 05). Moreover, the mRNA expression levels of iNOS, IL-1, IL-6, TNF-α were increased, while the expression of Arg1 was decreased in frontal lobe in rats of the chronic sleep deprivation group compared with the control or platform group (all P＜0. 05). The Iba-1 positive cells in butylphthalide intervention group were reduced compared with chronic sleep deprivation group (P＜0. 05). And the mRNA expression levels of iNOS, IL-1, IL-6 and TNF-α were decreased, while the expression of Arg1 did not chang in rats of the butylphthalide intervention group compared with the chronic sleep deprivation group (all P＜0. 05). Conclusion: Butylphthalide might inhibit the activation and decrease the inflammatory factors in frontal lobe of rats after chronic sleep deprivation.

Key words: chronic sleep deprivation, microglia, phenotype, inflammatory factor, butylphthalide, rat

中图分类号:

R741.02

王凌星, 洪姗燕, 杨美丽, 黄红红. 丁苯酞对睡眠剥夺大鼠额叶小胶质细胞活化的影响^*[J]. 中国应用生理学杂志, 2020, 36(2): 106-110.

WANG Ling-xing, HONG Shan-yan, YANG Mei-li, HUANG Hong-hong. Effects of butylphthalide on microglia activation in frontal lobe of rats after chronic sleep deprivation[J]. CJAP, 2020, 36(2): 106-110.

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丁苯酞对睡眠剥夺大鼠额叶小胶质细胞活化的影响^*

Effects of butylphthalide on microglia activation in frontal lobe of rats after chronic sleep deprivation

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