[Effect of neuropeptide Y and neurotensin on diurnal rhythm of blood pressure and target organ damage for essential hypertension].

Objective: To investigate the effect of plasma neuropeptide Y (NPY), neurotensin (NT) and their relationships on the diurnal rhythm of BP and target organ damage for essential hypertension.

Methods: Ambulatory BP monitoring (ABPM) for 24 hours was performed in ninety patients with essential hypertension and thirty healthy subjects. The patients were divided into two groups: 55 dippers and 35 non-dippers according to the ABPM results.