Department of Neurology, Juntendo University, School of Medicine, Japan.
Intern Med. 2023 Aug 15;62(16):2413-2414. doi: 10.2169/internalmedicine.0474-22. Epub 2023 Jan 12.
Myasthenia gravis (MG) development is female-dominant in younger patients and male-dominant in older patients. The reason for the sex-ratio inversion in elderly MG patients remains unclear. One possible explanation is the decrease in androgen secretion that occurs with aging, as androgen has an immunosuppressive function. We experienced two elderly men who developed MG after initiating androgen deprivation therapy (ADT) for treatment of prostate cancer and whose symptoms were ameliorated after ADT cessation. Our cases indicate that MG in older male patients can be caused by an androgen effect.
重症肌无力(MG)在年轻患者中以女性为主,在老年患者中以男性为主。老年 MG 患者性别比例倒置的原因尚不清楚。一种可能的解释是随着年龄的增长,雄激素分泌减少,因为雄激素具有免疫抑制作用。我们遇到两名老年男性,他们因前列腺癌接受雄激素剥夺疗法(ADT)治疗后出现 MG,并且在停止 ADT 后症状得到改善。我们的病例表明,老年男性的 MG 可能是由雄激素作用引起的。