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[Functions and changes of chemoreflex in physiological and pathological conditions]
A Gabutti1, L Spicuzza, C Porta
1Clinica Medica I, Dipartimento di Medicina Interna e Terapia Medica, Università e IRCCS San Matteo, Pavia.
Recenti Progressi in Medicina
|July 31, 2001
Summary
Chemoreceptors regulate breathing and impact cardiovascular health. This review explores their roles in various conditions like hypertension and heart failure, and during aging and exercise.
Area of Science:
- Physiology
- Cardiovascular Science
- Respiratory Medicine
Background:
- Chemoreceptors primarily modulate pulmonary ventilation in response to inspired gas changes.
- Their broader roles in physiological and pathological states are less understood.
- This review synthesizes current knowledge on chemoreceptor function.
Purpose of the Study:
- To review the anatomy and physiology of chemoreceptors.
- To analyze the chemoreflex-baroreflex interaction in cardiovascular control.
- To examine chemoreceptor involvement in hypertension, sleep apnea, heart failure, and pulmonary diseases.
Main Methods:
- Review of existing literature on chemoreceptor function.
- Analysis of chemoreflex changes in physiological contexts (aging, obesity, exercise, altitude).
- Description of chemoreflex study methods, emphasizing the rebreathing technique.
Main Results:
- Chemoreceptors significantly interact with the cardiovascular system.
- Chemoreflex function is altered in various physiological and pathological conditions.
- The rebreathing technique offers a valuable method for assessing chemoreflex function.
Conclusions:
- Chemoreceptors play a critical role beyond respiratory control, influencing cardiovascular homeostasis.
- Understanding chemoreceptor function is vital for managing conditions like essential hypertension and chronic heart failure.
- Further research into chemoreceptor dynamics in diverse physiological states is warranted.