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吡格列酮对局灶性脑缺血再灌注损伤大鼠核转录因子-κB、γ干扰素和细胞凋亡的影响 被引量:3

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摘要 目的探讨局灶性脑缺血再灌注损伤大鼠脑组织中核转录因子-κB(NF-κB)、γ干扰素(IFN-γ)和细胞凋亡的变化及吡格列酮(PGZ)干预对上述指标的影响。方法 120只SD雄性大鼠随机分为5组:假手术组(S组)、模型组(M组)、PGZ组(P组)、GW9662+PGZ组(GP组)和二甲基亚砜(DMSO)组(D组),每组24只。除S组外,其余各组均通过线栓法建立大鼠大脑中动脉阻塞再灌注损伤模型。P、GP、DMSO组于术前45 min分别经尾静脉注射PGZ 10 mg/kg、GW9662 0.3 mg/kg+PGZ 10 mg/kg、10%DMSO 2 mL/kg。缺血90 min再灌注24 h后,对大鼠进行神经功能评分;干湿质量法检测脑含水量;ELISA法检测NF-κB、IFN-γ含量水平;HE染色观察病理形态学,尼氏染色、TUNEL检测神经细胞凋亡。结果 (1)与S组比较,M组神经功能评分、脑含水量明显增加(P<0.05);与M组比较,P组神经功能评分、脑含水量明显降低(P<0.05)。(2)与S组比较,M组NF-κB、IFN-γ含量明显增加(P<0.05);与M组比较,P组NF-κB、IFN-γ含量显著降低(P<0.05),并且M、P两组中两者均呈显著正相关(P<0.001)。(3)与S组比较,M组凋亡细胞明显增加及健存神经元显著减少(P<0.05);与M组比较,P组凋亡细胞明显降低而健存神经元显著增多(P<0.05)。结论 NF-κB、IFN-γ以及细胞凋亡的改变与脑缺血再灌注损伤的炎症反应存在相关性,而PGZ可能通过抑制炎症反应,减轻细胞水肿及形态学改变、抗神经细胞凋亡途径,对神经细胞发挥保护作用。
出处 《广东医学》 CAS CSCD 北大核心 2012年第23期3541-3544,共4页 Guangdong Medical Journal
基金 广西自然科学基金资助项目(编号:2012GXNSFAA053102) 广西桂林市科学研究与技术开发资助项目(编号:20110119-1-6)
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共引文献24

同被引文献25

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