首页|柚皮素抑制cGAS-STING通路活化对大鼠下肢深静脉血栓形成的影响

柚皮素抑制cGAS-STING通路活化对大鼠下肢深静脉血栓形成的影响

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[目的]探讨柚皮素抗大鼠下肢深静脉血栓形成机制.[方法]将60只大鼠随机分为6组,即假手术组,模型组,柚皮素低、中、高剂量组和柚皮素高剂量+ STING激动剂2.5己酮可可碱(DMXAA)组,每组10只.检测各组大鼠凝血指标[D-二聚体(D-dimer)、凝血酶时间(TT)、活化部分凝血活酶时间(APTT)、凝血酶原时间(PT)],炎症指标[白细胞介素1β(IL-1β)、白细胞介素6(IL-6)、肿瘤坏死因子α(TNF-α)]及氧化应激指标[丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)];苏木素-伊红(HE)染色法检测静脉血栓形成;检测血栓湿质量和干质量;透射电镜检测静脉血栓超微结构;Western Blot法检测静脉血栓组织中环鸟苷酸-腺苷酸合成酶(cGAS)、干扰素基因刺激因子(STING)蛋白表达.[结果](1)与假手术组比较,模型组大鼠D-dimer水平,IL-1β、IL-6、TNF-α水平,MDA含量,血栓湿质量和干质量增加,TT、APTT、PT,SOD活性和GSH-Px活性降低(均P<0.05);与模型组比较,柚皮素低、中、高剂量组大鼠D-dimer水平,IL-1β、IL-6、TNF-α水平,MDA含量,血栓湿质量和干质量降低,TT、APTT、PT,SOD活性和GSH-Px活性增加(均P<0.05),且呈剂量依赖性;与柚皮素高剂量组比较,柚皮素高剂量+ DMXAA组大鼠D-dimer水平,IL-1β、IL-6、TNF-α水平,MDA含量,血栓湿质量和干质量升高,TT、APTT、PT,SOD活性和GSH-Px活性降低(均P<0.05).(2)与假手术组比较,模型组大鼠静脉血栓组织中cGAS、STING蛋白表达水平升高(P<0.05);与模型组比较,柚皮素低、中、高剂量组大鼠静脉血栓组织中cGAS、STING蛋白表达水平均显著降低(P<0.05);柚皮素高剂量+ DMXAA组大鼠cGAS、STING蛋白表达水平显著高于柚皮素高剂量组(P<0.05).[结论]柚皮素可通过抑制cGAS/STING信号通路活化,抑制炎症、氧化应激反应,从而缓解下肢深静脉血栓形成.
Effect of Naringenin Inhibiting the Activation of cGAS-STING Pathway on the Lower Extremity Deep Venous Thrombosis in Rats
Objective To investigate the mechanism of naringenin resisting lower extremity deep venous thrombosis(LEDVT)in rats.Methods Sixty rats were randomly divided into 6 groups,i.e.,sham-operation group,model group,naringenin low-,medium-,and high-dose groups,and naringenin high-dose + STING agonist 2.5 hexamethylene cacodylate(DMXAA)group,with 10 rats in each group.The coagulation indexes[D-dimer,thrombin time(TT),activated partial thromboplastin time(APTT),prothrombin time(PT)],inflammation indexes[interleukin 1β(IL-1β),interleukin 6(IL-6),tumor necrosis factor α(TNF-α)]and oxidative stress indexes[malondialdehyde(MDA),glutathione peroxidase(GSH-Px),superoxide dismutase(SOD)];Hematoxylin-eosin(HE)staining to detect thrombus formation in venous tissues;wet and dry mass of thrombus were detected;ultrastructure of venous thrombus was detected by transmission electron microscope(TEM);protein expressions of cyclic GMP-AMP synthase(cGAS)and stimulator of interferon genes(STING)in venous thrombus tissue were detected by Western Blot.Results(1)Compared with the sham-operation group,rats in the model group showed an increase in D-dimer levels,IL-1β,IL-6,TNF-α levels,MDA content,thrombus wet and dry mass,and a decrease in TT,APTT,PT,SOD activity,and GSH-Px activity(all P<0.05);and compared with the model group,rats in naringen's low-,medium-,and high-dose groups showed a decrease in D-dimer levels,IL-1β,IL-6,TNF-α levels,MDA content,thrombus wet and dry mass,TT,APTT and PT,SOD activity and GSH-Px activity were increased(P<0.05)in a dose-dependent manner compared with the model group;compared with the naringenin high-dose group,rats in the naringenin high-dose + DMXAA group,D-dimer levels,IL-1β,IL-6,TNF-α levels,MDA content,thrombus wet and dry mass were elevated,TT,APTT and PT,SOD activity and GSH-Px activity were decreased(P<0.05).(2)Compared with the sham-operation group,the expression levels of cGAS and STING proteins in the venous thrombus tissues of rats in the model group were elevated(P<0.05);compared with the model group,the expression levels of cGAS and STING proteins in the venous thrombus tissues of rats in the naringeno low-,medium-and high-dose groups were significantly reduced(P<0.05);cGAS and STING protein expression levels in the naringenin high-dose + DMXAA group were significantly higher than those in the naringenin high-dose group(P<0.05).Conclusion Naringenin can inhibit the activation of cGAS/STING signalling pathway,thereby inhibiting the inflammatory response and resisting oxidative stress,and thus alleviating the LEDVT.

naringinlower extremity deep venous thrombosis(LEDVT)cGAS/STING signaling pathwayinflammatory responserats

张玉莲、谢华

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重庆大学附属三峡医院,重庆 404000

柚皮素 下肢深静脉血栓 cGAS/STING信号通路 炎症反应 大鼠

重庆市科卫联合中医药科技项目

ZY201802109

2024

广州中医药大学学报
广州中医药大学

广州中医药大学学报

CSTPCD
影响因子:1.055
ISSN:1007-3213
年,卷(期):2024.41(1)
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