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腺素受体机制 基础膀功能障碍 在雄性大鼠中 膀出口阻塞
Ei-Ichiro Takaoka1,2, Masahiro Kurobe1, Kanako Matsuoka1
1Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
在雄性大鼠中,部分膀输出阻塞 (BOO) 导致膀功能障碍. 氨酸A2A受体阻塞减少了非排泄性收缩,这表明它是过度活性膀的治疗点.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 药理学 药理学是指药理学的学科.
- 身体生理学 身体生理学
背景情况:
- 部分膀输出阻塞 (BOO) 可以导致严重的膀功能障碍.
- 腺素受体在调节膀功能方面发挥作用.
- 了解受体表达变化对于开发向疗法至关重要.
研究的目的:
- 调查腺受体亚型在膀功能障碍中的作用.
- 在BOO的老鼠模型中分析腺受体表达的变化.
- 评估针对BOO相关膀过活性的向腺受体的治疗潜力.
主要方法:
- 雄性Sprague-Dawley大鼠接受了部分尿道绑定,以诱导BOO或假手术.
- 在清醒状态下进行了囊膜造影,并进行了腺受体agonists/antagonists的静脉注射.
- 使用RT-PCR量化了腺受体亚型的mRNA水平,并检查了膀组织学.
主要成果:
- 在BOO大鼠中,膀重量增加,非排空的收缩,膀容量和排空后的残留体积增加,排空效率降低.
- 腺素A2A和A3受体mRNA水平上调,而A2B受体mRNA在BOO膀下调.
- 在BOO大鼠中,A2A抗体ZM241385的静脉注射显著减少了非空腹收缩.
结论:
- 雄性大鼠BOO模型有效地模拟了补偿膀功能障碍.
- 腺氨酸A2A受体代表了一个有前途的治疗点,用于管理男性BOO患者的膀过活性的治疗.
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