title: MTHFR C677T polymorphism modifies the effect of HRT on metabolic parameters in postmenopausal women.
abstract: OBJECTIVE
  To assess the interaction of the MTHFR C677T polymorphism with changes in lipid and glucose metabolism effected by oral hormone replacement therapy (HRT) in postmenopausal women.
  
  
  METHODS
  In this open-label, prospective, interventional study, parameters of lipid and glucose metabolism, as well as homocysteine, were assessed in 97 postmenopausal women at baseline and 1 year after the initiation of HRT. Participants were stratified into three subgroups, according to the MTHFR C677T polymorphism (wild-type: CC genotype; heterozygous: CT genotype; homozygous for the mutant variable: TT genotype).
  
  
  RESULTS
  The TT genotype was associated with an elevation of total and low density lipoprotein (LDL) cholesterol, while CT and CC genotypes were associated with a reduction of total cholesterol and LDL cholesterol after 1 year of HRT (p = 0.032 for total cholesterol and p = 0.002 for LDL cholesterol). Women with the TT genotype had higher glucose levels in contrast to women with the CC genotype who had lower glucose levels after 1 year of HRT (p = 0.011). Additionally, CC carriers under HRT had a significant elevation of apolipoprotein A1 levels (p = 0.018), contrarily to CT and TT genotypes.
  
  
  CONCLUSIONS
  While HRT was associated with favorable changes in lipid and metabolic parameters in carriers of the CC genotype, this effect was not evident in carriers of the T allele. The MTHFR C677T polymorphism may modify the effect of HRT on lipid and metabolic parameters in postmenopausal women.
authors.affiliation: 2nd Department of Obstetrics and Gynecology, University of Athens , Aretaieio Hospital, Athens.
authors.forename: I
authors.initials: I
authors.lastname: Lambrinoudaki
authors.forename: D
authors.initials: D
authors.lastname: Papadimitriou
authors.forename: G
authors.initials: G
authors.lastname: Kaparos
authors.forename: D
authors.initials: D
authors.lastname: Rizos
authors.forename: C
authors.initials: C
authors.lastname: Panoulis
authors.forename: E
authors.initials: E
authors.lastname: Deligeoroglou
authors.forename: A
authors.initials: A
authors.lastname: Alexandrou
authors.forename: A
authors.initials: A
authors.lastname: Auguolea
authors.forename: M
authors.initials: M
authors.lastname: Apostolakis
authors.forename: M
authors.initials: M
authors.lastname: Creatsa
authors.forename: E
authors.initials: E
authors.lastname: Kouskouni
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000032:analysis; D015992:Body Mass Index; D002784:Cholesterol / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015914:Estrogen Replacement Therapy; D005260:Female; D005838:Genotype; D005947:Glucose / Q000378:metabolism; D006710:Homocysteine / Q000097:blood; D006801:Humans; D050356:Lipid Metabolism; D042965:Methylenetetrahydrofolate Reductase (NADPH2) / Q000235:genetics*; D008875:Middle Aged; D011110:Polymorphism, Genetic; D017698:Postmenopause / Q000378:metabolism*; D011446:Prospective Studies; D016896:Treatment Outcome; D014280:Triglycerides / Q000097:blood
chemical_list: D001786:Blood Glucose; D008078:Cholesterol, LDL; D014280:Triglycerides; D006710:Homocysteine; D002784:Cholesterol; C573423:MTHFR protein, human; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D005947:Glucose