title: Menopause rather than estrogen modifies plasma homocysteine levels.
abstract: OBJECTIVE
  To investigate the effects of transdermal estrogen replacement therapy (ERT) on plasma homocysteine levels in postmenopausal women who underwent total hysterectomy with bilateral oophorectomy.
  
  
  METHODS
  In two-phase open longitudinal prospective study we compared 28 premenopausal women and 35 healthy postmenopausal patients to evaluate the effect of transdermal estrogen treatment (TTS 50 twice-weekly) on plasma homocysteine levels after 6 and 12 months of therapy.
  
  
  RESULTS
  The study showed statistically relevant differences (P<0.05) in baseline plasma homocysteine concentration between the patients in premenopausal and in postmenopausal status. No difference in the plasma homocysteine levels was observed after 6 and 12 months of ERT on postmenopausal patients.
  
  
  CONCLUSIONS
  Surgically postmenopausal women have higher plasma homocysteine concentrations than premenopausal women, but transdermal estrogen treatment for 12 months in postmenopausal women does not modify homocysteine levels.
authors.affiliation: Department of Surgical Sciences, University of Udine, Udine, Italy. diego.marchesoni@dsc.uniud.it
authors.forename: D
authors.initials: D
authors.lastname: Marchesoni
authors.forename: L
authors.initials: L
authors.lastname: Driul
authors.forename: L
authors.initials: L
authors.lastname: Plaino
authors.forename: M T
authors.initials: MT
authors.lastname: Villani
authors.forename: L
authors.initials: L
authors.lastname: Becagli
authors.forename: B
authors.initials: B
authors.lastname: Mozzanega
mesh_terms: D000279:Administration, Cutaneous; D000328:Adult; D004958:Estradiol / Q000008:administration & dosage* / Q000494:pharmacology*; D015914:Estrogen Replacement Therapy; D005260:Female; D005500:Follow-Up Studies; D006710:Homocysteine / Q000097:blood* / Q000187:drug effects*; D006801:Humans; D007044:Hysterectomy; D008137:Longitudinal Studies; D008593:Menopause / Q000378:metabolism*; D008875:Middle Aged; D010052:Ovariectomy; D017697:Premenopause / Q000378:metabolism*; D011446:Prospective Studies; D013997:Time Factors
chemical_list: D006710:Homocysteine; D004958:Estradiol