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Endogenous sex hormones and risk factors for atherosclerosis in healthy Greek postmenopausal women. 2006

Irene Lambrinoudaki, and George Christodoulakos, and Demetrios Rizos, and Emmanuel Economou, and John Argeitis, and Sofia Vlachou, and Maria Creatsa, and Evangelia Kouskouni, and Dimitrios Botsis
2nd Department of Obstetrics and Gynecology, University of Athens, Greece. ilambrinoudaki@hotmail.com

OBJECTIVE To assess the association between endogenous sex hormones and risk factors for atherosclerosis in healthy postmenopausal women. METHODS Cross-sectional study in a university menopause clinic. METHODS Serum sex hormones and lipid-lipoprotein profile, arterial pressure, homocysteine and insulin resistance, measured by the homeostasis model assessment of insulin resistance (HOMA-IR), were assessed in 598 healthy postmenopausal women not on hormone therapy. RESULTS Compared with women in the lowest testosterone quartile (Q), women in the highest testosterone quartile had higher total cholesterol (Q1: 225.2 +/- 41.3 vs Q4: 246.2 +/- 38.4 mg/dl, P < 0.01), low-density lipoprotein (LDL)-cholesterol (Q1: 146.9 +/- 37.2 vs Q4: 171.8 +/- 35.3 mg/dl, P < 0.001), atherogenic index of plasma (AIP) (Q1: -0.224 +/- 0.238 vs Q4: -0.087 +/- 0.254, P < 0.01), apolipoprotein B (ApoB) (Q1: 100.7 +/- 23.1 vs Q4: 113.9 +/- 23.8 mg/dl, P < 0.001) and higher high-density lipoprotein (HDL)-cholesterol (Q1: 60.7 +/- 14.5 vs Q4: 52.9 +/- 13.0 mg/dl, P < 0.01). Accordingly, women in the highest free androgen index (FAI) quartile had higher AIP (Q1: -0.232 +/- 0.254 vs Q4: -0.078 +/- 0.243, P < 0.001) and ApoB (Q1: 102.4 +/- 25.5 vs Q4: 114.2 +/- 25.8 mg/dl, P < 0.01) and lower HDL-cholesterol (Q1: 62.0 +/- 15.7 vs Q4: 51.9 +/- 11.6 mg/dl, P < 0.001) and apolipoprotein A (Q1: 159.6 +/- 25.6 vs Q4: 147.9 +/- 24.1 mg/dl, P < 0.01) compared with women in the lowest FAI quartile. These differences remained significant after adjustment for age, body mass index (BMI), insulin resistance and social habits. The free estrogen index (FEI) exhibited similar associations to the FAI. HOMA-IR showed an independent positive association with total testosterone (Q1: 2.00 +/- 1.36 vs Q4: 2.66 +/- 1.60, P < 0.01), FAI (Q1: 1.70 +/- 1.12 vs Q4: 3.04 +/- 1.66, P < 0.001) and FEI (Q1: 1.70 +/- 0.91 vs Q4: 3.08 +/- 1.77, P < 0.001). CONCLUSIONS Increased androgenicity in healthy postmenopausal women is associated with an unfavorable cardiovascular risk profile. High endogenous estradiol is related to a pro-atherogenic lipid profile, an association which may, in part, be mediated by insulin resistance.

UI MeSH Term Description Entries
D007333 Insulin Resistance Diminished effectiveness of INSULIN in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent HYPERGLYCEMIA or KETOSIS. Insulin Sensitivity,Resistance, Insulin,Sensitivity, Insulin
D008055 Lipids A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed) Lipid
D008074 Lipoproteins Lipid-protein complexes involved in the transportation and metabolism of lipids in the body. They are spherical particles consisting of a hydrophobic core of TRIGLYCERIDES and CHOLESTEROL ESTERS surrounded by a layer of hydrophilic free CHOLESTEROL; PHOSPHOLIPIDS; and APOLIPOPROTEINS. Lipoproteins are classified by their varying buoyant density and sizes. Circulating Lipoproteins,Lipoprotein,Lipoproteins, Circulating
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D012044 Regression Analysis Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable. Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D004958 Estradiol The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. 17 beta-Estradiol,Estradiol-17 beta,Oestradiol,17 beta-Oestradiol,Aerodiol,Delestrogen,Estrace,Estraderm TTS,Estradiol Anhydrous,Estradiol Hemihydrate,Estradiol Hemihydrate, (17 alpha)-Isomer,Estradiol Monohydrate,Estradiol Valerate,Estradiol Valeriante,Estradiol, (+-)-Isomer,Estradiol, (-)-Isomer,Estradiol, (16 alpha,17 alpha)-Isomer,Estradiol, (16 alpha,17 beta)-Isomer,Estradiol, (17-alpha)-Isomer,Estradiol, (8 alpha,17 beta)-(+-)-Isomer,Estradiol, (8 alpha,17 beta)-Isomer,Estradiol, (9 beta,17 alpha)-Isomer,Estradiol, (9 beta,17 beta)-Isomer,Estradiol, Monosodium Salt,Estradiol, Sodium Salt,Estradiol-17 alpha,Estradiol-17beta,Ovocyclin,Progynon-Depot,Progynova,Vivelle,17 beta Estradiol,17 beta Oestradiol,Estradiol 17 alpha,Estradiol 17 beta,Estradiol 17beta,Progynon Depot
D005260 Female Females
D006115 Greece A country in southern Europe, bordering the Aegean Sea, Ionian Sea, and the Mediterranean Sea, between Albania and Turkey. The capital is Athens. Crete,Macedonia (Greece)
D006710 Homocysteine A thiol-containing amino acid formed by a demethylation of METHIONINE. 2-amino-4-mercaptobutyric acid,Homocysteine, L-Isomer,2 amino 4 mercaptobutyric acid,Homocysteine, L Isomer,L-Isomer Homocysteine

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