Related Experiment Video
Updated: May 14, 2026
12:24
Methods for the Determination of Rates of Glucose and Fatty Acid Oxidation in the Isolated Working Rat Heart
Published on: September 28, 2016
Sex differences in myocardial metabolism and cardiac function: an emerging concept
Carin Wittnich1, Luke Tan, Jack Wallen
1Department of Physiology, University of Toronto, 1 King's College Circle, Medical Sciences Bldg. Room 7256, Toronto, ON, M5S 1A8, Canada. c.wittnich@utoronto.ca
Pflugers Archiv : European Journal of Physiology
|February 14, 2013
Summary
Sex hormones significantly influence cardiovascular disease incidence and cardiac function. This review explores how estrogen, progesterone, and testosterone impact heart metabolism and performance, highlighting sex-specific differences.
Area of Science:
- Cardiovascular Physiology
- Endocrinology
Background:
- Sex hormones play a role in cardiovascular disease incidence.
- Steroid hormone receptors are present in the heart and vasculature.
- Sex-related differences in cardiac metabolism and function are debated.
Purpose of the Study:
- To review evidence on sex-related differences in cardiac metabolism and function.
- To explore the role of principal sex steroid hormones in cardiac energetics and performance.
Main Methods:
- Review of human and animal studies.
- Analysis of research on estrogen, progesterone, and testosterone effects on the heart.
Main Results:
- Estrogen and testosterone demonstrate cardiac metabolic effects.
- Females exhibit higher heart rates, cardiac output, and stroke volume compared to males.
- Cardiac function declines in postmenopausal females, indicating hormonal influence.
Conclusions:
- Sex hormones significantly impact cardiac metabolism, energetics, and function.
- Hormonal effects on cardiac performance can be condition-dependent.
- Further research is needed to fully elucidate the role of sex steroids in cardiac health.
Related Concept Videos
01:29Pathophysiology of Cardiac Performance
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
01:27Specialized Characteristics of Cardiac Muscles
The primary role of cardiac muscles is to propel blood throughout the cardiovascular system. The cardiac muscle cells, or cardiomyocytes, exhibit specialized characteristics that allow them to perform this function.
Cardiac muscle cells are smaller than skeletal muscles, averaging 10–20 mm in diameter and 50–100 mm in length. However, they have large energy demands for continuous contraction and relaxation. This energy is almost exclusively derived from aerobic metabolism of energy reserves in...
Cardiac muscle cells are smaller than skeletal muscles, averaging 10–20 mm in diameter and 50–100 mm in length. However, they have large energy demands for continuous contraction and relaxation. This energy is almost exclusively derived from aerobic metabolism of energy reserves in...
01:25Cardiomyopathy I: Introduction and Classification
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
01:26Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
01:26Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
01:19Cardiac Output I:Effect of Heart Rate on Cardiac Output
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart rate...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart rate...