Effect of complete cardiac denervation on atrial natriuretic factor release in baboons

Secreted by the heart, more specifically by atrial cardiomyocytes under normal conditions but also by ventricular myocytes during cardiac hypertrophy, natriuretic peptides are now considered important hormones in the control of blood pressure and salt and water excretion. Studies on natriuretic peptide secretagogues and their mechanisms of action have been complicated by hemodynamic changes and contractions to which the atria are constantly subjected. It now appears that atrial stretch through mechano-sensitive ion channels, adrenergic stimulation via alpha 1A-adrenergic receptors, and endothelin via its ETA receptor subtype are major triggering agents of natriuretic peptide release. With several other stimuli, such as angiotensin II and beta-adrenergic agents, modulation of natriuretic peptide release appears to be linked to local generation of prostaglandins. In all cases, intracellular calcium homeostasis, controlled by several ion channels, is considered a key element in the regulation of natriuretic peptide secretion.

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Regulation of Natriuretic Peptide Secretion by the Heart

Thibault

Amiri

García

1999

Annu. Rev. Physiol.

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Effect of complete cardiac denervation on atrial natriuretic factor release in baboons

Cited by 1 publication

References 18 publications

Regulation of Natriuretic Peptide Secretion by the Heart

Regulation of Natriuretic Peptide Secretion by the Heart

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