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Cardiovascular reflex responses induced by epicardial chemoreceptor stimulation
1Experimental Cardiology Laboratory, Hospital Vall d'Hebron, Autonomous University of Barcelona, Spain. jcinca@hg.vhebron.es
Cardiovascular Research
|March 23, 2000
Summary
Cardiac receptors on the heart
Area of Science:
- Cardiology
- Neuroscience
- Physiology
Background:
- Cardiac mechano- and chemoreceptors are located in the myocardium, coronary vessels, epicardium, and pericardium.
- Epicardial receptors can be stimulated by direct mechanical or chemical application, triggering reflex cardiovascular responses without systemic drug effects.
Discussion:
- Topical application of various substances (e.g., bradykinin, nicotine, capsaicin) to epicardial receptors reveals functional characteristics of cardiac afferent neurons.
- Studies utilize the epicardial sensory field to investigate neuronal function in both normal and pathological cardiac conditions, including myocardial ischemia and heart failure.
Key Insights:
- Epicardial sensory neurites play a significant role in the overall regulation of the cardiovascular system.
- Direct stimulation of epicardial receptors provides a method to study cardiovascular reflexes without systemic drug administration.
Outlook:
- Further research is needed to fully understand reflex cardiovascular responses in patients with pericardial abnormalities.
- Investigating the role of epicardial receptors may lead to novel therapeutic strategies for cardiovascular diseases.