title: Four cardiac hormones increase circulating concentrations of luteinizing hormone and testosterone.
abstract: This study was designed to determine whether four peptide hormones consisting of amino acids 1-30-long-acting natriuretic hormone (LANH), 31-67 (vessel dilator), 79-98 (kaliuretic hormone), and 99-126 (atrial natriuretic hormone [ANH])-of the 126 amino acid atrial natriuretic prohormone increase the circulating concentration of testosterone in healthy humans (n = 30). Vessel dilator, kaliuretic hormone, LANH, and ANH increased the circulating concentration of testosterone 3.8, 2.6, 3.9, and 3.4-fold, respectively (p < 0.01 for each), when infused at 100 ng/(kg of body wt . min) for 60 min. The increases in testosterone lasted 2.5-3 h after cessation of the respective atrial natriuretic peptides' infusions. ANH, vessel dilator, LANH, and kaliuretic hormone increased luteinizing hormone (LH) 3-to 8.4-fold (p < 0.001) during infusion, with the maximal increase in LH being 6.7- to 11.7-fold (p < 0.001) secondary to these cardiac hormones. Vessel dilator and kaliuretic hormone increased LH before increasing testosterone in a sequential fashion. These data suggest that four peptide hormones-ANH, LANH, vessel dilator, and kaliuretic hormone-increase the circulating con-centrations of LH and testosterone in humans.
authors.affiliation: University of South Florida Cardiac Hormone Center, Department of Biochemistry, James A. Haley Veterans Medical Center, Tampa 33612, USA. vesely.david_1@tampa.va.gov
authors.forename: David L
authors.initials: DL
authors.lastname: Vesely
authors.forename: Gloria I
authors.initials: GI
authors.lastname: San Miguel
authors.forename: Imran
authors.initials: I
authors.lastname: Hassan
authors.forename: William R
authors.initials: WR
authors.lastname: Gower
authors.forename: Douglas D
authors.initials: DD
authors.lastname: Schocken
mesh_terms: D000328:Adult; D009320:Atrial Natriuretic Factor / Q000494:pharmacology*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D010446:Peptide Fragments / Q000494:pharmacology; D011498:Protein Precursors / Q000494:pharmacology*; D013739:Testosterone / Q000097:blood* / Q000378:metabolism
chemical_list: D010446:Peptide Fragments; D011498:Protein Precursors; C075322:atrial natriuretic factor precursor (79-98); D013739:Testosterone; D009320:Atrial Natriuretic Factor; D007986:Luteinizing Hormone