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[Heart and androgens]
1Service universitaire d'endocrinologie, unité de psychoneuroendocrinologie CHU et CHR Citadelle.
Insights
Male steroids, like testosterone, play a key role in cardiovascular health, influencing heart function and potentially treating heart disease. Lower testosterone levels are linked to increased risk of coronary artery disease (CAD).
Area of Science:
- Endocrinology and Cardiovascular Physiology
- Molecular mechanisms of androgen action in the heart
Context:
- Androgens, particularly testosterone, are recognized for their role beyond sexual function, impacting cardiovascular homeostasis.
- Cardiovascular diseases such as coronary artery disease (CAD) and heart failure are significant causes of morbidity and mortality.
Purpose:
- To explore the multifaceted roles of androgens in cardiovascular physiology and pathology.
- To investigate the clinical significance of testosterone levels in the context of cardiovascular health and disease, specifically CAD and heart failure.
Summary:
- Testosterone mediates cardiomyocyte hypertrophy via androgen receptors, influencing cardiac function in both physiological states and disease.
- Androgenic hormones regulate inflammatory cytokines (e.g., IL-6, TNF) in heart failure and mediate vascular resistance, including coronary vasodilation.
- Reduced free testosterone levels are associated with a pro-atherogenic lipid profile (decreased HDL, increased triglycerides), relevant for CAD patients.
Impact:
- Findings highlight the clinical relevance of assessing testosterone levels in patients with CAD and heart failure.
- Suggests a growing interest in further research into the physiological implications and therapeutic potential of androgens for cardiovascular diseases.
- Potential for novel therapeutic strategies targeting androgen pathways in the management of CAD and heart failure.
Abstract:
Beyond sexual function regulation, male steroids are operative in several physiologic homeostastic systems including the cardiovascular system. By ways of specific androgen receptors,testosterone can mediate cardiomyocyte trophycity, in physiologic states as in diseases involving cardiac hypertrophy. Androgenic hormones also regulate pathologic levels of inflammatory cytokines as 11-6 or TNF, in advanced heart failure. They also mediate vascular resistance with, in vitro and in vivo, proved coronary vasodilatation. Reduced free testosterone serum levels (age-mediated or in premature coronary artery disease patients (CAD) promote a pro-atherogenic lipid profile expressed as HDL-cholesterol decrease and up-regulation of triglycerids levels). The latter observation has relevant clinical significance for evaluation and treatment of CAD disease. As most of normal and diseased cardiovascular system functions are influenced by androgens, we can foresee an increasing interest for further evaluation of their physiologic implications as well as for large and rigourous studies of their therapeutic potential in two leading disabling pathologies, CAD and heart failure.
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