The association of hypotestosteronemia with coronary artery disease in men.

Abstract

Hyperestrogenemia and hypotestosteronemia have been observed in association with myocardial infarction (MI) and its risk factors. To determine whether these abnormalities may be prospective for MI, estradiol and testosterone, as well as risk factors for MI, were measured in 55 men undergoing angiography who had not previously had an MI. Testosterone (r=-.36, /"=.008) and free testosterone (r=-A9, P<.001) correlated negatively with the degree of coronary artery disease after controlling for age and body mass index. When the patient group was successively reduced to a final study group of 34 men by excluding the patients with other major disorders, the testosterone and free testosterone correlations persisted (r=-.43, P<.02 and r=-.62, /><.001, respectively). Neither estradiol nor the risk factors, except for T he observations in men of hyperestrogenemia after myocardial infarction (MI), 1 of an association of sex hormones with risk factors for MI, 2 ' 3 and of a concurrence of risk factors for MI in clinical states other than MI and in populations 24 led to the hypothesis that an elevation in the estradiol-to-testosterone ratio or some closely related hormonal alteration may underlie risk factors and that hyperestrogenemia may lead to MI in men. 2 ' 3 Most laboratories studying sex hormones and MI in men have reported a high estradiol level after MI, both acutely 59 and months to years later. 612 Other laboratories have observed a low testosterone level, 1316 and yet others have observed both abnormalities 17 ' 20 after MI. Prospective studies for MI, however, have thus far failed to show an abnormality in the level of either estradiol 2125 or testosterone. 2123 ' 25 The present study investigated whether a hormonal abnormality might be prospective for MI by determining the sex hormone levels in relation to the degree of coronary artery disease (CAD) in men who had not had an MI. The serum estradiol and testosterone levels as well as the levels of risk factors for MI were measured in 55 men undergoing coronary angiography who had not had an MI. Methods PatientsFifty-five male patients undergoing coronary angiography were studied. The patients had been referred to the Cardiac Catheterization Laboratory of Roosevelt Hospital for evaluaReceived September 23, 1993; revision accepted February 10, 1994.From the Department of Medicine, Columbia University College of Physicians and Surgeons, St. Luke's-Roosevelt Hospital Center, New York, NY.Reprint requests to Dr Gerald B. Phillips, Roosevelt Hospital, 428 W 59th St, New York, NY 10019.high-density lipoprotein cholesterol, correlated with the degree of coronary artery disease in the final group. Testosterone correlated negatively with the risk factors fibrinogen, plasminogen activator inhibitor-1, and insulin and positively with high-density lipoprotein cholesterol. The correlations found in this study between testosterone and the degree of coronary artery disease and between testosterone and other risk factors for MI raise the possibility that in men hypote...

Androgens and Diabetes in Men

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Hormonal effects on blood vessels

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Androgens and male aging: current evidence of safety and efficacy

“…But data are lacking as to whether higher testosterone levels predict reduced incidence of combined nonfatal and fatal major cardiovascular events [45]. The inverse correlation between T levels and the severity of coronary artery disease [46] may be related to the fact that low androgen levels are accompanied by an accumulation of abdominal visceral fat [47,48] associated with increased cardiovascular risk factors, impaired glucose tolerance, and non-insulindependent diabetes mellitus [49].…”

“…The administration of testosterone in physiological concentration increases coronary blood flow in patients with coronary heart disease [53]. Beneficial effects on endothelial function [54] and myocardial ischemia have also been demonstrated [46,55,56] but not on cardiovascular mortality [53,54]. Thus, although lower testosterone levels are associated with higher cardiovascular risk and to an extent with mortality in aging men, randomized controlled clinical trials of adequate size and duration are needed to determine whether testosterone therapy will reduce morbidity and mortality from cardiovascular disease in hypogonadal or eugonadal men.…”