Ischemic heart disease and cardioprotection: Focus on estrogenic hormonal setting and microvascular health

Area of Science:

• Cardiovascular Science
• Endocrinology
• Sex Differences in Medicine

Background:

• Ischemic heart disease (IHD) involves impaired blood flow to the heart, affecting oxygen supply and waste removal.
• Significant sex-dependent differences exist in IHD onset and progression, with estrogenic hormonal status being a key factor.
• Estrogen-activated pathways are vital for microvascular health, and their dysfunction contributes to vascular issues.

Purpose of the Study:

• To review current knowledge on estrogen receptors in the cardiovascular system.
• To focus on sex-dependent differences in microvascular versus macrovascular dysfunction.
• To outline estrogen-mediated cardioprotective mechanisms and relevant experimental models.

Main Methods:

• Literature review of scientific publications on estrogen, cardiovascular system, and IHD.
• Analysis of studies investigating estrogen receptor localization and function.
• Examination of experimental models elucidating sex-dependent cardiovascular responses.

Main Results:

• Estrogen receptors are present and functional within the cardiovascular system.
• Estrogen exerts distinct effects on microvascular and macrovascular function, differing between sexes.
• Impairment of estrogenic pathways is linked to increased susceptibility to vascular dysfunction.

Conclusions:

• Estrogen signaling is critical for cardiovascular health, with notable sex-specific variations.
• Understanding these differences is essential for addressing sex disparities in ischemic heart disease.
• Further research into estrogen-mediated mechanisms can inform targeted therapeutic strategies.