title: Acute sublingual nifedipine and adrenergic activation: a chronobiologic attempt of optimized administration in healthy subjects.
abstract: Nifedipine has been shown to increase heart rate and plasma catecholamines, due to an adrenergic activation. Two healthy male subjects, after a period of sinchronization, have self-measured heart rate (HR) every 30 min for two consecutive days through a portable, non invasive, automatic device. The data were then analysed by means of chronobiologic procedures, to verify their personal HR acrophase. Forty-eight hours later, the same subjects repeated the trial, assuming 20 mg of sublingual nifedipine just one hour before their calculated HR acrophase, and data were analysed at the same way. After drug assumption, both HR acrophases and mesors failed to show any modification.
authors.affiliation: Istituto di Medicina Interna, Università degli Studi di Ferrara.
authors.forename: R
authors.initials: R
authors.lastname: Manfredini
authors.forename: M
authors.initials: M
authors.lastname: Nardini
authors.forename: D
authors.initials: D
authors.lastname: Mele
authors.forename: F
authors.initials: F
authors.lastname: Rizzoli
authors.forename: R
authors.initials: R
authors.lastname: Salmi
authors.forename: L
authors.initials: L
authors.lastname: Bariani
authors.forename: C
authors.initials: C
authors.lastname: Fersini
mesh_terms: D000286:Administration, Sublingual; D000328:Adult; D002940:Circadian Rhythm / Q000502:physiology; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D009543:Nifedipine / Q000008:administration & dosage / Q000494:pharmacology*; D013564:Sympathetic Nervous System / Q000187:drug effects*
chemical_list: D009543:Nifedipine