腺氨酸A2A受体调节大动脉中的microRNA-181b表达:大动脉硬的治疗影响
Kei Akiyoshi1, Tomonari Fujimori1, Xiuping Fu2
1Department of Anesthesiology and Critical Care Medicine Johns Hopkins School of Medicine Baltimore MD USA.
Journal of the American Heart Association
|July 8, 2023
概括
阻断腺A2A受体 (A2A R) 可能治疗大动脉硬. 激活A2A R会增加跨线/脉活动,恶化大动脉硬性,而抗剂则可以防止这种情况.
科学领域:
- 心血管生理学心血管生理学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 大动脉硬是心血管疾病发病率和死亡率的重要危险因素.
- 转林/菌微RNA降解酶与大动脉硬度有关,其无活化提供保护.
- 抑制转林/链RNase活性是大动脉硬的潜在治疗策略.
研究的目的:
- 为了调查是否在血管光滑肌细胞 (VSMCs) 上腺素A2A受体 (A2A R) 刺激增强了转林/体复合物的活性.
- 为了确定A2A R激活是否有助于高盐水诱导的大动脉硬化.
- 评估A2A R阻塞在大动脉硬化中的治疗潜力.
主要方法:
- 用A2A R激动剂CGS21680对待A7r5细胞,以评估转林/体关联和microRNA-181b水平.
- 在高盐水中给小鼠服用A2A R抗剂SCH58261以评估大动脉硬化.
- 在老年小鼠和人类中比较大动脉前微型RNA-181b/微型RNA-181b水平.
主要成果:
- A2A R激素CGS21680在A7r5细胞中增加了转林/体关联,并降低了A7r5细胞中的预微RNA-181b和成熟微RNA-181b水平.
- A2A R抗剂SCH58261治疗阻断了高盐水诱导的大动脉硬化.
- 在大动脉前微型RNA-181b/微型RNA-181b水平的与年龄相关的下降在小鼠和人类中都被观察到.
结论:
- 腺氨酸A2A受体的激活促进了转林/脉活动,有助于大动脉硬.
- 阻断A2A受体可能为管理大动脉硬提供一种新的治疗方法.
- 需要进一步的研究来探索A2A R抗剂在治疗动脉硬性的临床疗效.
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