title: Cyclic changes in serum cholesterol and lipoproteins following different doses of combined postmenopausal hormone replacement therapy.
abstract: Cyclic changes in lipoproteins after sequential oestrogen-progestogen therapy were studied in a group of healthy postmenopausal women treated with three different hormone doses, and followed up for two consecutive cycles by twice weekly examinations (a total of 17 examinations). There was a significant rise in high density lipoprotein (HDL) cholesterol and a significant fall in low density lipoprotein (LDL) cholesterol closely related to the dose of the oestrogen component. Addition of the progestogen, 1 mg of norethisterone acetate, decreased the oestrogen-induced rise in HDL, but HDL levels remained higher than initial values in the high-dose (4 mg) and medium dose (2 mg) groups. The average increases in HDL cholesterol were 13%, 9% and 2% in the high-dose, medium-dose and low-dose (1 mg) groups, respectively, and the corresponding mean decreases in LDL cholesterol were 18%, 15% and 10% respectively. We conclude that postmenopausal treatment with sequentially combined oestrogen-progestogen has no adverse effects on the lipoprotein status.
mesh_terms: D002784:Cholesterol / Q000097:blood*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D004338:Drug Combinations / Q000627:therapeutic use; D004958:Estradiol / Q000627:therapeutic use; D004964:Estriol / Q000627:therapeutic use; D004967:Estrogens / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008074:Lipoproteins / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood; D008077:Lipoproteins, LDL / Q000097:blood; D008593:Menopause / Q000187:drug effects*; D008875:Middle Aged; D009640:Norethindrone / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000077563:Norethindrone Acetate
chemical_list: D004338:Drug Combinations; D004967:Estrogens; D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D004958:Estradiol; C032040:Trisequens; D002784:Cholesterol; D000077563:Norethindrone Acetate; D004964:Estriol; D009640:Norethindrone