Effect of testosterone enanthate on serum lipoproteins in man.
Sixty-three normal Caucasian men were administered intramuscular testosterone enanthate (TE) 200 mg i.m. weekly for 12 months as part of a male contraceptive trial. This dose of TE caused a 2.5-fold increase in trough serum testosterone concentrations. High density lipoprotein cholesterol (HDL-C) was significantly depressed from pretreatment concentration of 1.19 +/- 0.04 nmol/l to 1.03 +/- 0.04 mmol/l after 12 weeks of treatment, and remained suppressed for the duration of treatment (p < 0.001). There were no changes in serum concentration of total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) or triglycerides (TG) during treatment, but the concentrations of TC and LDL-C were depressed at three months post-treatment. There was a sustained elevation in LDL-C:HDL-C ratio during TE treatment (p < 0.005), from 3.41 +/- 0.15 pretreatment to 3.88 +/- 0.19 after 12 weeks of TE treatment. Sex hormone binding globulin (SHBG), but not testosterone (T) or estradiol (E2), was significantly associated with HDL-C (r = 0.83, p = 0.001). Lipoprotein (a) (Lp(a)) was measured in a subgroup of 33 men: serum concentration fell from 187 +/- 45 mg/l pretreatment to 140 +/- 35 mg/l after 16 weeks of TE treatment (p < 0.01).
Department of Obstetrics and Gynaecology, University of Edinburgh, Scotland.
R A
RA
Anderson
E M
EM
Wallace
F C
FC
Wu
D000328:Adult; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D003272:Contraceptive Agents, Male / Q000494:pharmacology*; D004958:Estradiol / Q000097:blood; D006801:Humans; D015592:Immunoradiometric Assay; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D011863:Radioimmunoassay; D012738:Sex Hormone-Binding Globulin / Q000032:analysis; D013739:Testosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology; D014280:Triglycerides / Q000097:blood; D014944:World Health Organization
D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D003272:Contraceptive Agents, Male; D008074:Lipoproteins; D012738:Sex Hormone-Binding Globulin; D014280:Triglycerides; D013739:Testosterone; D004958:Estradiol; C004648:testosterone enanthate