1 REVIEW Effects of androgens on cardiovascular remodeling Yasumasa Ikeda1,2, Ken-ichi Aihara2, Sumiko Yoshida2, Masashi Akaike3 and Toshio Matsumoto2 Departments of 1Pharmacology, 2Medicine and Bioregulatory Sciences and 3Medical Education, The University of Tokushima, Graduate School of Health Biosciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan (Correspondence should be addressed to K Aihara; Email:
[email protected]) Abstract Androgens, the male sex hormones, exert various biological cardiovascular mortality. However, the influence of androgens effects on many target organs through the transcriptional effects on the cardiovascular system has not been fully elucidated. of the nuclear androgen receptor (AR). ARs are expressed not Toclarify this issue, we analyzed the effects of administration of only in classical target organs, such as the brain, genital organs, angiotensin II and doxorubicin, an anticancer agent, in a bone, and skeletal muscles, but also in the cardiovascular loading model in male wild-type and AR-deficient mice. In system. Because the female sex hormones estrogens are well- this review, we focus on the actions of androgens as potential known to protect against cardiovascular disease, sex has targets for the prevention of cardiovascular diseases in males. been considered to have a significant clinical impact on Journal of Endocrinology (2012) 214, 1–10 Introduction In addition, previous studies have shown that testosterone replacement tends to increase cardiovascular risk among Cardiovascular disease remains a major cause of death in both men of all ages (Calof et al. 2005, Haddad et al. 2007, womenandmenworldwideandappearstoincrease Fernandez-Balsells et al. 2010). On the other hand, recent morbidity and mortality in industrial countries.