click below
click below
Normal Size Small Size show me how
sex hormones-drugs
| Question | Answer |
|---|---|
| ESTRADIOL | Natural Estrogens |
| ETHINYL ESTRADIOL | Synthetic Estrogens |
| Effects of Estrogens | Required for the normal sexual maturation and growth. Stimulate the development of the vagina, uterus, and uterine tubes Stimulate the development of the secondary sex characteristics. |
| Effects of Estrogens on endomtrium | Growth effects on uterine smooth muscle With progesterone, regulates normal human menstrual cycle -Continuous exposure to estrogens for prolonged periods leads to hyperplasia of the endometrium -Associated with abnormal bleeding patterns |
| Effects of Estrogens on blood vessels | Maintenance of the normal structure and function blood vessels |
| Effects of Estrogens on BONE | DECREASE THE RATE OF RESORPTION OF BONE |
| Effects of Estrogens on liver | Stimulates the production of: Corticosteroid-binding globulin, Thyroxine-binding globulin, (TBG): Increased circulating levels of thyroxine,SHBG: Increased circulating levels estrogen, testosterone,Transferrin: increased circulating levels of iron and co |
| Estrogen EFFECTS ON PLASMA LIPIDS | Increase in the High-Density Lipoproteins (HDL) Slight reduction in the low-density lipoproteins (LDL) Reduction in total plasma cholesterol levels. Increased Plasma triglyceride |
| Estrogen Effects on Blood Coagulation | Enhance coagulation |
| ANASTROZOLE | Inhibitors of Estrogen Synthesis, Reversible Aromatase Inhibitors (Non steroidal type II) |
| Serious estrogen-lacking side-effects | Increased risk of osteoporosis |
| anastrozole Adverse Effects | Dramatically reduce levels of estrogens Produce hot flashes They lack the beneficial effect of tamoxifen to maintain bone density |
| FORMESTANE | IRREVERSIBLE inhibition of aromatase (steroidal type I) |
| Adverse Effects of FORMESTANE | Dramatically reduce levels of estrogens Produce hot flashes They lack the beneficial effect of tamoxifen to maintain bone density |
| TAMOXIFEN | Competitive PARTIAL AGONIST of Estrogen Receptor (ER) |
| Tamoxifen action | ER ANTAGONIST IN BREAST TISSUES PARTIAL AGONIST IN ENDOMETRIUM AND BONE Used for the treatment of breast cancer |
| adverse effects Tamoxifen | Hot flashes atrophy of the lining of the vagina with bleeding and discharge hair lossN/V Menstrual irregularities increases the incidence of endometrial cancer in postmenopausal women. |
| RALOXIFENE description and action | Selective Estrogen Receptor Modulators (SERMs) ER AGONIST IN BONE ANTAGONIST IN BOTH BREAST AND ENDOMETRIUM |
| Raloxifene adverse effects | Hot flashes Deep vein thrombosis leg cramps |
| CLOMIFENE | ANTAGONIST IN HYPOTHALAMUS AND ANTERIOR PITUITARY PARTIAL AGONIST IN OVARIES |
| Adverse Effects of clomifene | ovarian hyperstimulation, increased incidence of multiple births, ovarian cysts, hot flashes, and blurred vision. Prolonged use (e.g., ≥12 cycles) increase the risk of ovarian cancer. |
| DROSPIRENONE (1, 2-DIHYDROSPIRORENONE) | Type of progesterone |
| Effects of Progesterone | Little effect on protein metabolism. Stimulates lipoprotein lipase activity |
| progesterone effects on liver | Promotes glycogen storage |
| effects of progesterone on reproductive tract | Progesterone decreases estrogen-driven endometrial proliferation -> development of a secretory endometrium Abrupt decline in progesterone at end of cycle= main determinant of onset of menstruation long duration -> changes in the endometrium similar to tho |
| MIFEPRISTONE | Antiprogetins :Available for the termination of pregnancy |
| MIFEPRISTONE MOA | Competitive receptor antagonist for PR-A and PR-B Also competes with glucocorticoid receptor |
| ULIPRISTAL ACETATE | PARTIAL AGONIST AT THE PR |
| ULIPRISTAL ACETATE MOA | Inhibit ovulation Used for emergency contraception |
| testosterone | is the principal secreted androgen in men |
| Testosterone effects | Puberty: 2° sexual characteristics in male TESTOSTERONE WHEN GIVEN TO ADULTS: In Adult Males, large doses lead to testicular atrophy In Adult Women, androgens lead to changes seen in pre-pubertal males |
| Testosterone MOA | The effects of testosterone are mediated via the Androgen Receptor (AR) and estrogen |
| KETOCONAZOLE | Antiandrogen, Synthesis Inhibitor |
| KETOCONAZOLE effects | Inhibitor of adrenal and gonadal steroid synthesis Does not affect ovarian aromatase Reduces human placental aromatase activity. Increases the estradiol:testosterone ratio in plasma. Men treated with ketoconazole often develop reversible gynecomastia du |
| FINASTERIDE | 5α-reductase inhibitor |
| FINASTERIDE effects | Effective in reducing prostate size in men with benign prostatic hyperplasia |
| FLUTAMIDE | Androgen Receptor Antagonists |
| FLUTAMIDE effect | Limited efficacy when used alone because the increased LH secretion Stimulates higher serum testosterone concentrations |