血管内血液溶解对尿膀功能和分子变化的影响:在状细胞疾病中对过度活跃的膀的影响
Tammyris Helena Rebecchi E Silveira1, Dalila Andrade Pereira1, Danillo Andrade Pereira1
1Laboratory of Pharmacology, São Francisco University Medical School, Bragança Paulista, Brazil.
Frontiers in physiology
|August 5, 2024
概括
血管内血解,模仿状细胞疾病并发症,在小鼠中引起过度活性膀 (OAB) 症状. 这种血液溶解会损害氧化 (NO) 信号传输,并增加膀中的氧化应激.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 血液学 血液学 血液学
- 身体生理学 身体生理学
背景情况:
- 状细胞疾病 (SCD) 与过度活跃的膀 (OAB) 有关.
- 血管内血液溶解是SCD的标志,并与并发症有关.
- 血液溶解对膀功能的直接影响仍未得到充分研究.
研究的目的:
- 为了研究血管内血溶解对膀功能的影响和脱肌平滑肌 (DSM) 收缩性.
- 探索血液溶解在氧化 (NO) 信号功能障碍和膀内的氧化应激中的作用.
主要方法:
- 在小鼠中诱导血液溶解使用基素 (PHZ).
- 通过空隙点测试评估了排尿模式.
- 在器官浴中测量了DSM收缩反应.
- 分析了NO信号标记物和氧化应激指标的蛋白质表达.
主要成果:
- PHZ诱导的血液溶解导致尿动频率增加和空腔体积增加.
- 在PHZ组中观察到增强的DSM收缩性.
- 膀中酸化的eNOS,nNOS和VASP的水平降低.
- 在膀中氧化应激标记物 (NOX-2,3-NT,4-HNE) 的表达升高.
结论:
- 血管内血液溶解促进排泄功能障碍和OAB表型.
- 血液溶解破坏了膀中的NO信号通路.
- 膀中氧化应激增加与血液溶解诱导的OAB有关.
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