探索由费纳斯特治疗和戒断诱导的老鼠体洞穴变化
Silvia Diviccaro1, Monika Herian1, Lucia Cioffi1
1Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy.
Andrology
|August 25, 2023
概括
费纳斯特治疗改变了大鼠体洞穴体的丸激素代谢,可能导致勃起功能障碍. 这些效应在药物戒断后逆转,这表明中枢神经系统参与了后费纳斯特综合征.
科学领域:
- 安德罗学与人类学
- 药理学 药理学是指药理学的学科.
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 费纳斯特是一种5α-减少酶抑制剂,可以治疗雄性发症,但可以导致性功能障碍,包括勃起功能障碍 (ED).
- 后费纳斯特综合征 (PFS) 描述了费纳斯特停止后持续的副作用.
- 费纳斯特治疗和戒断对阴茎组织和ED相关机制的影响需要进一步研究.
研究的目的:
- 为了研究亚慢性费纳斯特治疗和随后的断药对大鼠体的作用.
- 为了探索费纳斯特诱导的勃起功能障碍的潜在机制.
- 为了确定观察到的变化是否可以在药物停用后逆转.
主要方法:
- 在老鼠中,次慢性费纳斯特治疗 (20天) 随后有1个月的戒断期.
- 在体中分析5α-减少酶II类型酶水平, (T) 和二 (DHT).
- 有针对性的代谢组学来评估氧化合成酶 (NOS) 和甲素转糖酶 (OTC) 的活性.
- 测量血中诺上腺素和上腺素水平.
主要成果:
- 费纳斯特治疗降低了5α-减少酶II型,增加了T,并降低了DHT在体中.
- 观察到NOS活性降低 (以氨酸/氨酸比率和NO2水平表示) 和OTC活性 (氨酸/氨酸比率).
- 血中诺亚上腺素增加,而上腺素减少,这表明神经递质功能发生了变化.
- 这些由费纳斯特诱导的变化在药物戒断后恢复.
结论:
- 费纳斯特治疗,而不是停止治疗,会改变大鼠体内的局部T代谢,从而促进ED机制.
- 这项研究表明,与PFS相关的性副作用可能源于中枢神经系统功能障碍,而不是外围问题.
- 药物戒断后这些影响的可逆性为管理费纳斯特相关不良事件提供了洞察力.
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