title: Plasma levels of atrial natriuretic factor in nonhibernating and hibernating marmots.
abstract: Plasma atrial natriuretic factor (ANF) was measured in 16 marmots at various times of the year. Nonhibernating males (n = 6) had an average plasma concentration of 56 +/- 8 pg/ml; nonhibernating females (n = 6) had an average plasma concentration of 61 +/- 4 pg/ml. During hibernation an additional group of females (n = 4) showed an average of 25 +/- 5 pg/ml. Plasma ANF of both groups of nonhibernating marmots was significantly higher (P less than 0.01) than that the hibernating group, but there was no difference between nonhibernating males and females.
authors.affiliation: Department of Physiology, University of Missouri Health Science Center, Columbia 65212.
authors.forename: M L
authors.initials: ML
authors.lastname: Zatzman
authors.forename: G V
authors.initials: GV
authors.lastname: Thornhill
mesh_terms: D000818:Animals; D009320:Atrial Natriuretic Factor / Q000097:blood*; D005260:Female; D006605:Hibernation; D008297:Male; D008392:Marmota / Q000097:blood*; D012589:Sciuridae / Q000097:blood*; D012621:Seasons; D012727:Sex Characteristics
chemical_list: D009320:Atrial Natriuretic Factor