Role of neuropeptide Y in the regulation of kidney function.

The presence in the mammalian kidney of NPY and at least one of its receptor subtypes has been proven by several independent methodologies. Also, numerous studies using physiological and pharmacological approaches indicated that this peptide has the capacity to alter renal function. In particular, these studies suggest that NPY may exert renal vasoconstrictor and tubular actions that are species dependent, and may also influence renin secretion by the kidney. The question whether NPY plays an important role in the physiological regulation of renal hemodynamics and electrolyte excretion, remains largely unanswered at present. No major impairments in renal function have been reported in genetically models deficient in NPY or its Y1 receptor. Thus, additional studies are required to elucidate the role of NPY in the physiological and pathophysiological regulation of renal function.