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. 1985 Jun 28;129(3):833-9.
doi: 10.1016/0006-291x(85)91967-9.

Atrial natriuretic peptides stimulate renal gluconeogenesis

T Obara, H Yamada, J Nakada, H Endou

Atrial natriuretic peptides stimulate renal gluconeogenesis

T Obara et al. Biochem Biophys Res Commun. .

Abstract

Atrial natriuretic peptide (5-28AA; ANP) and atrial extract (ANS) stimulated rat renal gluconeogenesis in cortical tubule suspension in a dose dependent fashion only from substrates that enter gluconeogenesis via phosphoenol-pyruvate carboxylase. The effects of ANP and ANS were significantly potentiated by cAMP and cGMP, whereas methoxamine showed no effect. Extracellular calcium revealed a key role for ANP and ANS response to gluconeogenesis: a concentration of calcium higher than 1 mM was essential. Isolated cells from cortex which lost cell membrane polarity by warming but responded solely to cAMP and cGMP showed no effect by ANP nor ANS. These data suggest that ANP or ANS may act mainly from the basolateral site in the proximal tubule cell and promote gluconeogenesis through cAMP and/or cGMP system.

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