Natriuretic peptides A/NPPA Protein, Human (P. pastoris, His)

Natriuretic peptides A/NPPA, vital in cardio-renal homeostasis, play diverse roles in vascular remodeling and energy metabolism. These peptides bind and stimulate NPR1, triggering cGMP production and activating downstream effectors, including PRKG1, to mediate various biological responses. Functionally, they regulate vasodilation, natriuresis, diuresis, and aldosterone synthesis, crucial for blood pressure regulation and fluid-electrolyte balance. In addition, they inhibit cardiac remodeling and hypertrophy by inducing cardiomyocyte apoptosis and restraining cell growth. During pregnancy, Natriuretic peptides A/NPPA promote trophoblast invasion and spiral artery remodeling, preventing pregnancy-induced hypertension. In adipose tissue, they regulate lipid metabolism and energy homeostasis through cGMP- and PKG-dependent pathways, influencing AMP-activated protein kinase (AMPK) and promoting UCP1-dependent thermogenesis in brown adipose tissue. The interaction with clearance receptor NPR3 contributes to their removal from circulation. While reports on their involvement in mammalian blood volume and pressure homeostasis vary, they enhance urine protein excretion by reducing proximal tubular protein reabsorption. Overall, Natriuretic peptides A/NPPA emerge as key players in maintaining physiological balance across multiple systems.