Abstract

The disruption of guanylyl cyclase/natriuretic peptide receptor A (GC-A/NPRA) gene (Npr1) leads to elevated arterial blood pressure, cardiac hypertrophy, congestive heart failure, and sudden death in mice lacking NPRA. ANP-NPRA signaling is known to counteract the renin-angiotensin-aldosterone system (RAAS). We studied whether Npr1 gene copy number affects adrenal angiotensin II (Ang II) and aldosterone (ALDO) levels in a gene-dose dependent manner in Npr1 gene-targeted mice. Adrenal Ang II and ALDO levels increased in one-copy (gene-disrupted heterozygous allele, 15%, p

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