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What is the primary mechanism of action of combined contraceptive pills?
What is the primary mechanism of action of combined contraceptive pills?
Which of the following is a benefit of using combined contraceptive pills?
Which of the following is a benefit of using combined contraceptive pills?
What is the main difference between combined contraceptive pills and progesterone-only pills?
What is the main difference between combined contraceptive pills and progesterone-only pills?
What is the primary source of estrogen in postmenopausal women?
What is the primary source of estrogen in postmenopausal women?
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Which of the following is a side effect of combined contraceptive pills?
Which of the following is a side effect of combined contraceptive pills?
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What is the mechanism of action of raloxifene in osteoporosis?
What is the mechanism of action of raloxifene in osteoporosis?
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What is the primary advantage of progesterone-only pills over combined contraceptive pills?
What is the primary advantage of progesterone-only pills over combined contraceptive pills?
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What is the purpose of developing male contraceptives such as dimethandrolone undecanoate (DMAU)?
What is the purpose of developing male contraceptives such as dimethandrolone undecanoate (DMAU)?
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What is a common side effect of DMAU?
What is a common side effect of DMAU?
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How are progesterone-only pills administered?
How are progesterone-only pills administered?
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What is the target of the drug anastrozole?
What is the target of the drug anastrozole?
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What is a limitation of available forms of testosterone?
What is a limitation of available forms of testosterone?
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What is the primary mechanism of action of Clomiphene in treating infertility?
What is the primary mechanism of action of Clomiphene in treating infertility?
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What is a common side effect of androgen replacement therapy in women and pre-pubescent children?
What is a common side effect of androgen replacement therapy in women and pre-pubescent children?
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What is the primary function of Finasteride in Androgen Ablation therapy?
What is the primary function of Finasteride in Androgen Ablation therapy?
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What is the primary mechanism of action of Enzalutamide in prostate cancer therapy?
What is the primary mechanism of action of Enzalutamide in prostate cancer therapy?
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What is the primary advantage of using Mesterolone in androgen replacement therapy?
What is the primary advantage of using Mesterolone in androgen replacement therapy?
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What is a common complication of Clomiphene treatment in infertility?
What is a common complication of Clomiphene treatment in infertility?
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What is the primary mechanism of action of Phosphodiesterase inhibitors in treating erectile dysfunction?
What is the primary mechanism of action of Phosphodiesterase inhibitors in treating erectile dysfunction?
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What enzyme is responsible for metabolizing Phosphodiesterase inhibitors like Sildenafil?
What enzyme is responsible for metabolizing Phosphodiesterase inhibitors like Sildenafil?
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What is a common side effect of Phosphodiesterase inhibitors?
What is a common side effect of Phosphodiesterase inhibitors?
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What is the time frame for the effects of Phosphodiesterase inhibitors to occur?
What is the time frame for the effects of Phosphodiesterase inhibitors to occur?
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What is the primary use of Phosphodiesterase inhibitors?
What is the primary use of Phosphodiesterase inhibitors?
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Which of the following references is NOT cited in the text?
Which of the following references is NOT cited in the text?
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What is a potential application of dimethandrolone undecanoate (DMAU)?
What is a potential application of dimethandrolone undecanoate (DMAU)?
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What is the effect of combined nestorone-testosterone gel on serum gonadotropins in men?
What is the effect of combined nestorone-testosterone gel on serum gonadotropins in men?
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What is the target of enzalutamide?
What is the target of enzalutamide?
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What is a current area of research in male hormonal contraception?
What is a current area of research in male hormonal contraception?
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What is a potential advantage of male hormonal contraception?
What is a potential advantage of male hormonal contraception?
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Desogestrel and gestodene have fewer adverse effects than Nexplanon.
Desogestrel and gestodene have fewer adverse effects than Nexplanon.
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Mifepristone is a full agonist of progesterone receptors.
Mifepristone is a full agonist of progesterone receptors.
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Short-term HRT has a clear-cut benefit of reducing the risk of breast cancer.
Short-term HRT has a clear-cut benefit of reducing the risk of breast cancer.
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Oestrogen ablation therapy is used during and after ER negative breast cancer.
Oestrogen ablation therapy is used during and after ER negative breast cancer.
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Nexplanon lasts for 5 years.
Nexplanon lasts for 5 years.
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Rang & Dales Pharmacology is a 7th edition book.
Rang & Dales Pharmacology is a 7th edition book.
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Mesterolone is anexample of a natural androgen.
Mesterolone is anexample of a natural androgen.
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Finasteride is used to treat benign prostate hyperplasia by converting testosterone to dihydrotestosterone.
Finasteride is used to treat benign prostate hyperplasia by converting testosterone to dihydrotestosterone.
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Clomiphene is used to treat infertility in males.
Clomiphene is used to treat infertility in males.
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Androgen replacement therapy can cause masculineisation in pre-pubescent children.
Androgen replacement therapy can cause masculineisation in pre-pubescent children.
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Enzalutamide is used to treat benign prostate hyperplasia.
Enzalutamide is used to treat benign prostate hyperplasia.
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Multiple pregnancy is a common complication of Clomiphene treatment.
Multiple pregnancy is a common complication of Clomiphene treatment.
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Phosphodiesterase inhibitors are used in the treatment of female infertility.
Phosphodiesterase inhibitors are used in the treatment of female infertility.
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Sildenafil induces vasoconstriction in the penis.
Sildenafil induces vasoconstriction in the penis.
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CYP3A4 is an enzyme that inhibits the metabolism of Phosphodiesterase inhibitors.
CYP3A4 is an enzyme that inhibits the metabolism of Phosphodiesterase inhibitors.
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The effects of Phosphodiesterase inhibitors occur within 10-30 minutes of oral administration.
The effects of Phosphodiesterase inhibitors occur within 10-30 minutes of oral administration.
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Abnormal uterine bleeding is a common side effect of Phosphodiesterase inhibitors.
Abnormal uterine bleeding is a common side effect of Phosphodiesterase inhibitors.
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Rang & Dales Pharmacology is a reference book used in anatomy and physiology.
Rang & Dales Pharmacology is a reference book used in anatomy and physiology.
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Raloxifene is used to stimulate ERs in breast tissue.
Raloxifene is used to stimulate ERs in breast tissue.
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Anastrozole inhibits the aromatase enzyme that enables Oestrogen production in the ovaries.
Anastrozole inhibits the aromatase enzyme that enables Oestrogen production in the ovaries.
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Dimethandrolone undecanoate (DMAU) is a combination of a progestin and an androgen that can cause liver inflammation.
Dimethandrolone undecanoate (DMAU) is a combination of a progestin and an androgen that can cause liver inflammation.
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Testosterone is the main source of estrogen in postmenopausal women.
Testosterone is the main source of estrogen in postmenopausal women.
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The primary mechanism of action of raloxifene is to reduce proliferation in breast and uterus.
The primary mechanism of action of raloxifene is to reduce proliferation in breast and uterus.
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Weight gain is a side effect of Anastrozole.
Weight gain is a side effect of Anastrozole.
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Dimethandrolone undecanoate (DMAU) has been shown to be effective as a male birth control pill
Dimethandrolone undecanoate (DMAU) has been shown to be effective as a male birth control pill
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Enzalutamide is used to treat prostate cancer that has spread to other parts of the body
Enzalutamide is used to treat prostate cancer that has spread to other parts of the body
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Combined nestorone-testosterone gel is effective in suppressing serum gonadotropins in men
Combined nestorone-testosterone gel is effective in suppressing serum gonadotropins in men
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Raloxifene is used to treat osteoporosis in postmenopausal women
Raloxifene is used to treat osteoporosis in postmenopausal women
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Anastrozole is used to treat breast cancer by blocking the production of estrogen
Anastrozole is used to treat breast cancer by blocking the production of estrogen
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Study Notes
Androgen Replacement Therapy
- Used in pituitary or testicular disease
- Synthetic androgens, such as mesterolone, are orally administered
- Side effects in women and pre-pubescent children: masculineization, decrease in LH & FSH
Androgen Ablation Therapy
- Testosterone is converted to dihydrotestosterone (DHT) in peripheral organs
- Finasteride is used to reduce benign prostate hyperplasia
- Enzalutamide is used in prostate cancer therapy
- Androgen Receptor activation drives proliferation through gene expression
Female Contraceptives
- Combined pill: oestrogen combined with progestogen, e.g. ethinylestradiol & levonorgestrel
- Oral administration for 21 days, 7 days pill-free
- Ovarian and breast cancer risk is reduced
- Side effects: weight gain, nausea, flushing, dizziness, depression, and increased blood pressure
- Progesterone only (mini pill): single progestogen, e.g. testosterone derivatives (norgestrel and ethynodiol) or progesterone derivatives (hydroxyprogesterone, medroxyprogesterone)
- Oral administration for 28 days
- Newer progestogens, e.g. (TSH signalling)
Male Contraceptives
- New drug being tested: dimethandrolone undecanoate (DMAU)
- Combination of hormones: androgen and a progestin, e.g. testosterone & a progestin
- Side effects: weight gain, decreased HDL, abdominal or pelvic pain, tenderness, pressure, or swelling; flushing, nausea, vomiting, or diarrhoea, blurred vision, headache; abnormal uterine bleeding
Drugs used in Infertility
- Gonadotrophin-Releasing Hormone: Agonists (Females)
- E.g. Clomiphene, oestrogen antagonist, stimulates release of GnRH by inhibiting negative feedback of endogenous oestrogen
- Stimulates and enlarges the ovaries, increases oestrogen secretion, and induces ovulation
- Used in treatment of infertility when there is a lack of ovulation
- Twins are common, but multiple pregnancy is unusual
- Phosphodiesterase inhibitors (Male)
- Used in treatment of erectile dysfunction to enhance the erectile response to sexual stimulation
- E.g. Sildenafil (Viagra)
- NO induced vasodilation in penis → increased blood flow
- Oral administration causes effects after ~30-120 minutes
- Metabolized by CYP3A4, which is induced by some other drugs and inhibited by some antibiotics, antifungals, and antiviral drugs
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Description
This quiz covers the mechanisms of action of contraceptive drugs, their side effects, and how hormones relate to cancer therapy, hormone replacement, and infertility. Learn about the importance of manipulating reproductive hormones in females.