3. Physiology
        3.12. Renal
            3.12.7. Control of sodium and water excretion
                3.12.7.4. Control of Sodium balance
3.12.7.4.3. Natriuretic hormones

Natriuretic hormones

[Ref:WG21:p464-466]

3 types

  1. Atrial natriuretic peptide
    * 28 amino acid residue
  2. Brain natriuretic peptide
    * 32 amino acid residue
  3. C-type natriuretic peptide
    * Mainly paracrinal

 

Production

Source --> Heart

BNP is also found is brain
* But level is higher in heart

Secretion is proportional to stretching of atria by central venous pressure

Regulation of production

ANP secretion increased when:

Decreased when:

Detector: stretching of atria

Effect of ANP and BNP

[WG21:p465]

Act on kidney to increase sodium excretion

Mechanism of natriuretic effect

Other effects

 



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