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Sexual Dimorphisms, Anti-Hormonal Therapy and Cardiac Arrhythmias

Abstract : Significant variations from the normal QT interval range of 350 to 450 milliseconds (ms) in men and 360 to 460 ms in women increase the risk for ventricular arrhythmias. This difference in the QT interval between men and women has led to the understanding of the influence of sex hormones on the role of gender-specific channelopathies and development of ventricular arrhythmias. The QT interval, which represents the duration of ventricular repolarization of the heart, can be affected by androgen levels, resulting in a sex-specific predilection for acquired and inherited channelopathies such as acquired long QT syndrome in women and Brugada syndrome and early repolarization syndrome in men. Manipulation of the homeostasis of these sex hormones as either hormonal therapy for certain cancers, recreational therapy or family planning and in transgender treatment has also been shown to affect QT interval duration and increase the risk for ventricular arrhythmias. In this review, we highlight the effects of endogenous and exogenous sex hormones in the physiological and pathological states on QTc variation and predisposition to gender-specific pro-arrhythmias.
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https://hal.sorbonne-universite.fr/hal-03134454
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Submitted on : Monday, February 8, 2021 - 12:23:53 PM
Last modification on : Thursday, February 11, 2021 - 5:30:24 PM

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Virginie Grouthier, Melissa Moey, Estelle Gandjbakhch, Xavier Waintraub, Christian Funck-Brentano, et al.. Sexual Dimorphisms, Anti-Hormonal Therapy and Cardiac Arrhythmias. International Journal of Molecular Sciences, MDPI, 2021, 22 (3), pp.1464. ⟨10.3390/ijms22031464⟩. ⟨hal-03134454⟩

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