Association between Androgenic Hormone Levels and Left Ventricular Ejection Fraction.

Area of Science:

• Cardiology
• Endocrinology
• Heart Failure Research

Background:

• Androgens exert varied effects on the cardiovascular system.
• Previous research indicates a connection between androgens and cardiovascular health.
• This study investigates androgen levels in relation to left ventricular ejection fraction (EF).

Purpose of the Study:

• To compare androgenic hormone levels across different left ventricular ejection fraction (EF) groups.
• To identify potential associations between specific androgens and reduced EF.
• To explore the relationship between free testosterone (fT) and severe heart failure.

Main Methods:

• Analysis of 515 men undergoing echocardiography and coronary angiography.
• Classification of patients into four EF groups: <35%, 35-45%, 45-54%, and ≥55%.
• Measurement of serum androgens: free testosterone (fT), total testosterone (tT), and dehydroepiandrosterone sulfate (DHEAS).
• Comparative analysis between patients with EF <35% and EF ≥35%.

Main Results:

• Higher EF levels correlated with lower incidence of diabetes, coronary artery lesions, and C-reactive protein (CRP).
• A statistically significant trend was observed in baseline characteristics across EF groups.
• Patients with EF <35% exhibited significantly lower free testosterone (fT) levels compared to those with EF ≥35% (p < 0.05).

Conclusions:

• A significant association exists between reduced free testosterone (fT) levels and left ventricular ejection fraction (EF) <35%.
• The findings suggest a potential link between low fT and severe heart failure.
• Further prospective studies are needed to establish a causal relationship.