- Androgens like testosterone and synthetic analogs cause male secondary sex characteristics. Testosterone is produced in testes and adrenals and binds to androgen receptors.
- Testosterone has androgenic effects like development of male reproductive tract and secondary sex characteristics. It also has anabolic effects like muscle building.
- Androgens are used to treat conditions like hypogonadism and wasting diseases. Synthetic anabolic steroids have higher anabolic effects. Anti-androgens like danazol and cyproterone acetate are used to treat conditions like endometriosis by inhibiting androgen action.
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Androgens, Oestrogens, Progestins and Contraceptives - drdhriti
1. Androgens, Oestrogens, ProgestinsAndrogens, Oestrogens, Progestins
and Hormonal Contraceptivesand Hormonal Contraceptives
Dr. D. K. BrahmaDr. D. K. Brahma
Associate ProfessorAssociate Professor
Department of PharmacologyDepartment of Pharmacology
NEIGRIHMS, ShillongNEIGRIHMS, Shillong
2. IntroductionIntroduction
Substances which cause secondary sex characteristicsSubstances which cause secondary sex characteristics
in Malein Male
Natural Androgens:Natural Androgens:
From Testes:From Testes:
• Testosterone (5-12 mg daily)Testosterone (5-12 mg daily)
• Dihydrotestosterone (more active) by 5Dihydrotestosterone (more active) by 5 αα-reductase-reductase
From Adrenal cortex: (weak androgens)From Adrenal cortex: (weak androgens)
• DehydroepiandrosteroneDehydroepiandrosterone
• AndrostenedioneAndrostenedione
{Females – 0.25 – 0.5 mg/day (ovary + adrenals)}{Females – 0.25 – 0.5 mg/day (ovary + adrenals)}
Androsterone – metabolite of testosteroneAndrosterone – metabolite of testosterone
Synthetic androgens:Synthetic androgens:
Methyltestosterone, FluoxymesteroneMethyltestosterone, Fluoxymesterone
Propionate and enanthatePropionate and enanthate
3. TestosteroneTestosterone
Produced from cholesterol primarily by Leydig cells in testesProduced from cholesterol primarily by Leydig cells in testes
Secreted at adult levels during 1st trimesterSecreted at adult levels during 1st trimester11, during neonatal life, during neonatal life22,,
continually after pubertycontinually after puberty33
Bound in plasma to albumin & sex hormone binding globulinBound in plasma to albumin & sex hormone binding globulin
(SHBG)(SHBG)
Can be converted to the more potent, 5α-dihydrotestosteroneCan be converted to the more potent, 5α-dihydrotestosterone
(DHT), which is responsible for many of the responses to(DHT), which is responsible for many of the responses to
testosterone in the urogenital tract (e.g. prostate gland hyperplasia)testosterone in the urogenital tract (e.g. prostate gland hyperplasia)
Binds to and activates a single androgen receptor (AR)Binds to and activates a single androgen receptor (AR)
Androgen receptors are present in many tissues includingAndrogen receptors are present in many tissues including
reproductive tissue, skeletal muscle, brain, kidney etc.reproductive tissue, skeletal muscle, brain, kidney etc.
1 2 3
4. Testosterone 17-alkyl substitution Methyltestosterone
Fluoxymesterone
• All androgens contain a Testosterone structures
• Testosterone has 19-carbons and in general its a steroidal
structure
6. Regulation of SecretionRegulation of Secretion
• LH – Testosterone secretion
• FSH – Spermatogenesis
• High testosterone – inhibits LH
• Estrogen – feedback inhibition
• Inhibin – FSH inhibition
• Plasma level of Testosterone:
0.3 to 1 mcg/dl (male)
20 to 60 ng/dl (female)
7. Biological Effects - TestosteroneBiological Effects - Testosterone
Androgenic Effects:Androgenic Effects:
In the foetus, testosterone promotes development of maleIn the foetus, testosterone promotes development of male
reproductive tract – internal genitalia, vas deferens, epididymis andreproductive tract – internal genitalia, vas deferens, epididymis and
external genitalia (sex differentiation)external genitalia (sex differentiation)
During puberty, testosterone promotes development of :During puberty, testosterone promotes development of :
primary sexual characteristics (e.g. enlargement of penis, scrotum andprimary sexual characteristics (e.g. enlargement of penis, scrotum and
testes)testes)
secondary sexual characteristics (e.g. male body shape, facial/pubicsecondary sexual characteristics (e.g. male body shape, facial/pubic
hair, deeper pitch of voice)hair, deeper pitch of voice)
Adulthood: Baldness, BHP, Prostatic cancerAdulthood: Baldness, BHP, Prostatic cancer
Testes:Testes: Promotion of spermatogenesis and maturation of spermPromotion of spermatogenesis and maturation of sperm
Moderately high dose causes testicular atrophy by inhibiting GnModerately high dose causes testicular atrophy by inhibiting Gn
secretionsecretion
8. Testosterone – anabolic effectsTestosterone – anabolic effects
Pubertal spurt of growth at puberty – both boy and girlPubertal spurt of growth at puberty – both boy and girl
Bone growth – thickness and lengthBone growth – thickness and length
Oestrogen from testosterone – fuse of bones andOestrogen from testosterone – fuse of bones and
mineralizationmineralization
Muscle building – if aided by exerciseMuscle building – if aided by exercise
Positive nitrogen, minerals and water balance – increasePositive nitrogen, minerals and water balance – increase
in weightin weight
Increase in appetiteIncrease in appetite
Acceleration of erythropoiesisAcceleration of erythropoiesis
10. Mechanism of ActionMechanism of Action
Androgen receptor:Androgen receptor:
Both, testosterone and DH testosterone – act via AndrogenBoth, testosterone and DH testosterone – act via Androgen
receptors (AR) – nuclear receptor super familyreceptors (AR) – nuclear receptor super family
55 αα-reductase 1 and 2-reductase 1 and 2
Ligand binding and DNA binding domainsLigand binding and DNA binding domains
Mutations in AR: Incomplete sexual developmentMutations in AR: Incomplete sexual development
Kennedy`s disease: in spinal andKennedy`s disease: in spinal and
bulbar muscle atrophybulbar muscle atrophy
Estrogen Receptor:
• Teststerone converts to
estrogen by CYP19
• Deficiency of CYP19 and
estrogen receptor – failure to
fuse long bones,
osteoporosis etc.
11. T DHT DHT- R
T- R
R
R
T- R
Nucleus
90%
10%
5- α
reductase
cytoplasm
12. Androgen - PharmacokineticsAndrogen - Pharmacokinetics
Absorption:Absorption: undergoes high firstundergoes high first
pass metabolism. Therefore IMpass metabolism. Therefore IM
injections or synthetic preparationsinjections or synthetic preparations
are usedare used
Transport:Transport: highly protein boundhighly protein bound
(98%, SHBG, albumin)(98%, SHBG, albumin)
Metabolism:Metabolism:
by liver enzymes : androsteroneby liver enzymes : androsterone
& etiocholanolone& etiocholanolone
excretion by urine afterexcretion by urine after
conjugationconjugation
small quantity of oestrogen alsosmall quantity of oestrogen also
produced from testosteroneproduced from testosterone
Methyltestosterone, FluoxymesteroneMethyltestosterone, Fluoxymesterone
metabolized slowlymetabolized slowly
13. Therapeutic Androgen PreparationsTherapeutic Androgen Preparations
Testosterone is ineffective orally (inactivated by liver), and is usuallyTestosterone is ineffective orally (inactivated by liver), and is usually
given as i.m. injections of testosterone estersgiven as i.m. injections of testosterone esters
Esterification of fatty acid at 17-hydroxyl groupEsterification of fatty acid at 17-hydroxyl group
Examples- propionate (25-50 mg), enanthate (100 mg depotExamples- propionate (25-50 mg), enanthate (100 mg depot
preparations)preparations)
Undecanoate in oil - orallyUndecanoate in oil - orally
effects last for 2-3 weekseffects last for 2-3 weeks
Transdermal preparations: Implants, capsules and patches mayTransdermal preparations: Implants, capsules and patches may
improve complianceimprove compliance
more stable levels and symptoms, effects last for monthsmore stable levels and symptoms, effects last for months
14. Therapeutic Uses of AndrogensTherapeutic Uses of Androgens
Androgen replacement therapy (ART)Androgen replacement therapy (ART)
ART uses derivatives of testosterone, rather than syntheticART uses derivatives of testosterone, rather than synthetic
Androgens, because they are safe, effective and easy to monitorAndrogens, because they are safe, effective and easy to monitor
1.1. Androgen deficiency:Androgen deficiency: clinical diagnosis confirmed by hormone assaysclinical diagnosis confirmed by hormone assays
is usually caused byis usually caused by
• underlying testicular disorders (high LH, but low testosterone levels)underlying testicular disorders (high LH, but low testosterone levels)
• hypothalamic-pituitary disorders (low LH and low testosteronehypothalamic-pituitary disorders (low LH and low testosterone
levels)levels)
Goal: Mimic the normal testosterone concentration as closely as possibleGoal: Mimic the normal testosterone concentration as closely as possible
(serum concentration monitoring)(serum concentration monitoring)
If untreated, does not shorten life expectancy, but is associated withIf untreated, does not shorten life expectancy, but is associated with
significant morbidity (ambiguous genitalia, delayed puberty & infertility)significant morbidity (ambiguous genitalia, delayed puberty & infertility)
Treated by androgen replacement therapy (ART), usually for the remainderTreated by androgen replacement therapy (ART), usually for the remainder
of life. The aim is to restore tissue androgen exposure by using the naturalof life. The aim is to restore tissue androgen exposure by using the natural
androgen testosteroneandrogen testosterone
15. Uses – contd.Uses – contd.
2.2. HypopituitarismHypopituitarism
Monitoring at anticipated time of pubertyMonitoring at anticipated time of puberty
2.2. AIDS related muscle wastingAIDS related muscle wasting
3.3. Hereditary angioneurotic edema (methyltestosterone)Hereditary angioneurotic edema (methyltestosterone)
4.4. AgeingAgeing
Misuse:Misuse: involves prescription with no acceptable medicalinvolves prescription with no acceptable medical
indicationindication
Examples of misuse include:Examples of misuse include:
male infertilitymale infertility
male sexual dysfunction or impotencemale sexual dysfunction or impotence
““male menopause” (andropause)male menopause” (andropause)
no convincing evidence that androgen therapy is eitherno convincing evidence that androgen therapy is either
effective treatment or safe for older men unless thereeffective treatment or safe for older men unless there
is frank androgen deficiencyis frank androgen deficiency
16. Androgens – Adverse EffectsAndrogens – Adverse Effects
Virilization:Virilization:
may occur in women receiving relatively high dosesmay occur in women receiving relatively high doses
for prolonged periods, such as for estrogen-for prolonged periods, such as for estrogen-
dependent mammary carcinomadependent mammary carcinoma
Cholestatic JaundiceCholestatic Jaundice
may be produced by steroids possessing a 17-alphamay be produced by steroids possessing a 17-alpha
methyl group – oral Vs parenteralmethyl group – oral Vs parenteral
Priapism (sustained erection)Priapism (sustained erection)
OligospermiaOligospermia
Edema--via promotion of salt and water retention.Edema--via promotion of salt and water retention.
Precocious puberty and short staturePrecocious puberty and short stature
AcneAcne
Hepatic carcinoma - oralHepatic carcinoma - oral
Gynaecomastia – children and liver diseaseGynaecomastia – children and liver disease
17. Androgens - contraindicationsAndrogens - contraindications
Carcinoma of Prostate and male BreastCarcinoma of Prostate and male Breast
Liver and Kidney diseasesLiver and Kidney diseases
PregnancyPregnancy
CHF, epilepsy and migraineCHF, epilepsy and migraine
21. DanazolDanazol
Ethisterone derivative effective orallyEthisterone derivative effective orally
FSH & LH release in both sexes decrease –FSH & LH release in both sexes decrease –
inhibition of testicular/ovarian functioninhibition of testicular/ovarian function
Binding of steroids to receptors decreaseBinding of steroids to receptors decrease
Weak androgenic, anabolic, progestational & glucocorticoid actionWeak androgenic, anabolic, progestational & glucocorticoid action
Uses:Uses:
EndometriosisEndometriosis
MenorrhagiaMenorrhagia
Fibrocystic breast diseaseFibrocystic breast disease
Hereditary angioneurotic oedemaHereditary angioneurotic oedema
GynecomastiaGynecomastia
Infertility: attenuatedInfertility: attenuated
Preparations:Preparations:
50. 100 and 200 mg. tablets50. 100 and 200 mg. tablets
Dose is 200 – 600 mg/dayDose is 200 – 600 mg/day
Side effects: Dose related
• Amenorrhea (High doses)
• Androgenic effects - Decreased breast
size, hirsutism, weight gain etc.
• Hot flashes, night sweating, cramps
22. Cyproterone acetateCyproterone acetate
Progesterone like activity – inhibits LH causingProgesterone like activity – inhibits LH causing
antiandrogenic actionantiandrogenic action
Competes with dihydroteststerone for intracellularCompetes with dihydroteststerone for intracellular
receptorreceptor
Uses:Uses:
AcneAcne
Male pattern of baldnessMale pattern of baldness
hirusitismhirusitism
Ca. of prostateCa. of prostate
Virilizing syndromeVirilizing syndrome
Precocious pubertyPrecocious puberty
Inappropriate behaviourInappropriate behaviour
23. FlutamideFlutamide
Non-steroidal anti-inflammatory and noNon-steroidal anti-inflammatory and no
hormonal activity but specific antiandrogenichormonal activity but specific antiandrogenic
actionaction
Antagonise androgens by competitive block – 2-Antagonise androgens by competitive block – 2-
hydroxyflutamidehydroxyflutamide
Accessory sex organsAccessory sex organs
PituitaryPituitary
Uses:Uses:
Cancer of prostate along with GnRH agonistCancer of prostate along with GnRH agonist
Female hirusitismFemale hirusitism
Dose: 250 mg tds.Dose: 250 mg tds.
24. FinasterideFinasteride
MOA:MOA: Competitive inhibitor of 5Competitive inhibitor of 5 αα-reductase-reductase
Selective ofSelective of 55 αα-reductase type-2 isoenzyme-reductase type-2 isoenzyme
Mainly acts on urogenital tract (prostate) – DHT level loweredMainly acts on urogenital tract (prostate) – DHT level lowered
but not plasma Testosterone levelbut not plasma Testosterone level
Uses:Uses:
1.1. Benign prostatic hypertrophy – decrease in prostate volume,Benign prostatic hypertrophy – decrease in prostate volume,
improved urinary flow, reversion of disease progressionimproved urinary flow, reversion of disease progression
– Withdrawal results in regrowth – prolonged therapyWithdrawal results in regrowth – prolonged therapy
1.1. Male pattern baldnessMale pattern baldness
– Kinetics:Kinetics: effective orally, metabolized in liver (t1/2 – 4-6effective orally, metabolized in liver (t1/2 – 4-6
hrs)hrs)
– Side effects:Side effects: loss of libido, impotence, decreasedloss of libido, impotence, decreased
ejaculationejaculation
– Doses:Doses: 5 mg OD (BHP) or 1 mg OD in baldness5 mg OD (BHP) or 1 mg OD in baldness
26. SidenafilSidenafil
Absorbed orally and half-life is 4 HrsAbsorbed orally and half-life is 4 Hrs
Inhibits PDE5 in the corpus cavernosa of the penisInhibits PDE5 in the corpus cavernosa of the penis
50mg 1 h before sexual activity50mg 1 h before sexual activity
Potentiate nitrate’s hypotension activityPotentiate nitrate’s hypotension activity
Ketoconazole, erythromycin, Verapamil increases itsKetoconazole, erythromycin, Verapamil increases its
level – due to CYP3A4 inhibitionlevel – due to CYP3A4 inhibition
Renal & hepatic disease increases its levelRenal & hepatic disease increases its level
Side effects:Side effects:
headache, flushing, dyspepsia, myalgia, loose motionheadache, flushing, dyspepsia, myalgia, loose motion
Other Uses:Other Uses: Pulmonary hypertensionPulmonary hypertension
29. IntroductionIntroduction
Oestrogens include the natural hormonesOestrogens include the natural hormones
as well as semi-synthetic and syntheticas well as semi-synthetic and synthetic
(stilbene) agents(stilbene) agents
Oestrogens are used as hormone:Oestrogens are used as hormone:
replacement therapy (menopause)replacement therapy (menopause)
in oncologyin oncology
contraceptivescontraceptives
Most estrogen in the female is produced inMost estrogen in the female is produced in
the ovaries by thethe ovaries by the theca internatheca interna and theand the
granulosagranulosa cells of the folliclescells of the follicles
31. Synthetic oestrogensSynthetic oestrogens
Steroidal:Steroidal:
Ethinyl estradiolEthinyl estradiol, Mestranol and Tibolone, Mestranol and Tibolone
Nonsteroidal:Nonsteroidal:
Diethinylstilbestrol, Hexestrol and DienestrolDiethinylstilbestrol, Hexestrol and Dienestrol
32. Regulation of SecretionRegulation of Secretion
Daily secretion: 10 toDaily secretion: 10 to
100 mcg per day100 mcg per day
During pregnancy –During pregnancy –
large quantity bylarge quantity by
placenta – upto 30placenta – upto 30
mg per daymg per day
Post menopausal: 2 –Post menopausal: 2 –
10 mcg per day only10 mcg per day only
33. Actions of OestrogensActions of Oestrogens
On sexual organs (primary and secondary sexual characteristics)On sexual organs (primary and secondary sexual characteristics)
Brings about pubertal changes in vagina, fallopian tube and uterus –Brings about pubertal changes in vagina, fallopian tube and uterus –
growthgrowth
Vagina: cornification of epithelial cells with thickening and stratificationVagina: cornification of epithelial cells with thickening and stratification
of epitheliumof epithelium
Ovaries : stimulate follicular growth; small doses cause an increase inOvaries : stimulate follicular growth; small doses cause an increase in
weight of ovary; large doses cause atrophyweight of ovary; large doses cause atrophy
Cervix: Rhythmic contractions of uterus and fallopian tube - increase ofCervix: Rhythmic contractions of uterus and fallopian tube - increase of
cervical mucous and alkaline watery secretion with a lowered viscositycervical mucous and alkaline watery secretion with a lowered viscosity
(favoring sperm access)(favoring sperm access)
Secondary Sex CharactersSecondary Sex Characters
Metabolic effects: AnabolicMetabolic effects: Anabolic
35. Other Pharmacological ActionsOther Pharmacological Actions
Bone:Bone: Important for maintaining bone mass – increasedImportant for maintaining bone mass – increased
expression of bone mass proteins (osteocalcin, alkalineexpression of bone mass proteins (osteocalcin, alkaline
phosphatase)phosphatase)
Generation of vit.D3 – induction of renal hydroxylaseGeneration of vit.D3 – induction of renal hydroxylase
enzymeenzyme
OedemaOedema – salt and water retention– salt and water retention
Increased LDL and decreased HDL levelIncreased LDL and decreased HDL level
Increased coagulability: II, VII, IX and XIncreased coagulability: II, VII, IX and X
Lithogenicity of BileLithogenicity of Bile
Increased SHBG, TBG and CBGIncreased SHBG, TBG and CBG
36. Mechanism of ActionMechanism of Action
2 ERs are –2 ERs are – ERERαα and ERßand ERß
ERERαα - uterus, vagina, breast and blood vessels- uterus, vagina, breast and blood vessels
ERß – Prostate and OvariesERß – Prostate and Ovaries
Work via a steroid hormone mechanism.Work via a steroid hormone mechanism.
Entering the target cells and binding to specific cytosolicEntering the target cells and binding to specific cytosolic
receptorsreceptors
The steroid-receptor complex is then translocated to theThe steroid-receptor complex is then translocated to the
nucleusnucleus
Where it alters gene expressionWhere it alters gene expression
Coactivator proteins and corepressor proteinsCoactivator proteins and corepressor proteins
37. Oestrogen - KineticsOestrogen - Kinetics
Absorbed orally, but quick metabolism –Absorbed orally, but quick metabolism –
natural ones except ethinyl estradiolnatural ones except ethinyl estradiol
All are absorbed transdermallyAll are absorbed transdermally
Bound to plasma protein (SHBG)Bound to plasma protein (SHBG)
Conjugated with glucoronic acid andConjugated with glucoronic acid and
excreted in urineexcreted in urine
Enterohepatic circulation – deconjugationEnterohepatic circulation – deconjugation
in intestinein intestine
38. Oestrogen preparationsOestrogen preparations
Preferred route is oral, but sometimes parenteralPreferred route is oral, but sometimes parenteral
when large doses are requiredwhen large doses are required
All estrogen preparations are available – tabletAll estrogen preparations are available – tablet
and injectionsand injections
Some examples:Some examples:
EE: 0.01, 0.05, 1 mg tab for menopauseEE: 0.01, 0.05, 1 mg tab for menopause
Conjugated estrogens: 0.625,1.25 mg tab for DUB orConjugated estrogens: 0.625,1.25 mg tab for DUB or
injections 25 mg/mlinjections 25 mg/ml
Mestranol: 0.1 mg tabs to convert to EEMestranol: 0.1 mg tabs to convert to EE
Estriol succinate: 1mg/gm creamEstriol succinate: 1mg/gm cream
39. Transdermal PatchesTransdermal Patches
Sizes: 5, 10 and 20 sq. cm –Sizes: 5, 10 and 20 sq. cm –
0.025, 0.05 and 1 mg/day0.025, 0.05 and 1 mg/day
Menopausal womenMenopausal women
Usual dose: 0.5 mg/dayUsual dose: 0.5 mg/day
Cyclic therapyCyclic therapy
Estrogen + Progestin patchesEstrogen + Progestin patches
40. Therapeutic UsesTherapeutic Uses
Hormone Replacement Therapy to Menopause womanHormone Replacement Therapy to Menopause woman
Problems of menopause:Problems of menopause:
Vasomotor disturbancesVasomotor disturbances
Urogenital atrophyUrogenital atrophy
Osteoporosis and fracturesOsteoporosis and fractures
Dermatological changesDermatological changes
Risk of cardiovascular diseasesRisk of cardiovascular diseases
Dosage: Oestrogen equivalent to 0.625 mg of EE/day inDosage: Oestrogen equivalent to 0.625 mg of EE/day in
cyclical mannercyclical manner
Progestin preparation (medroxy progesterone/norethisterone) isProgestin preparation (medroxy progesterone/norethisterone) is
used – 2.5 mg dailyused – 2.5 mg daily
TTS preparations may be preferredTTS preparations may be preferred
41. HRT IndicationsHRT Indications
Benefits: (Indications)Benefits: (Indications)
Vasomotor and other symptoms of perimenopausal period –Vasomotor and other symptoms of perimenopausal period –
smallest effective dosesmallest effective dose
Post hysterectomy patients – estrogen onlyPost hysterectomy patients – estrogen only
Young woman with premature menopauseYoung woman with premature menopause
Prevention of osteoporosis and fracturesPrevention of osteoporosis and fractures
Facts:Facts:
No protection against CVS diseasesNo protection against CVS diseases
No protection against cognitive decline – may increaseNo protection against cognitive decline – may increase
Increase in risk of breast cancer, gall stone, migraineIncrease in risk of breast cancer, gall stone, migraine
Tibolone:Tibolone:
Developed specifically for HRTDeveloped specifically for HRT
Estrogenic and progestitional propertyEstrogenic and progestitional property
Dose is 2.5 mg dailyDose is 2.5 mg daily
43. Clomiphene Citrate (Antiestrogen)Clomiphene Citrate (Antiestrogen)
The “Fertility pill” - pure antagonist ofThe “Fertility pill” - pure antagonist of
ESTROGEN receptor in all human tissuesESTROGEN receptor in all human tissues
MOA: Gn secretion and FSHMOA: Gn secretion and FSH
Used in women withUsed in women with unexplained infertilityunexplained infertility oror
anovulatoryanovulatory infertilityinfertility
Bind to both, ERBind to both, ERαα and ERß receptorsand ERß receptors
Blocks estrogenic feedback inhibition of pituitary andBlocks estrogenic feedback inhibition of pituitary and
induces Gn secretioninduces Gn secretion
Increase in amount of secretion of FSH/LH at eachIncrease in amount of secretion of FSH/LH at each
secretary pulsesecretary pulse
Creates favorable atmosphere (ovarian stimulation)Creates favorable atmosphere (ovarian stimulation)
for ovulation in ovariesfor ovulation in ovaries
44. Clomiphene Citrate – contd.Clomiphene Citrate – contd.
Dosage:Dosage:
50 mg OD from 550 mg OD from 5thth
day onwards for 5 daysday onwards for 5 days
Continued for 2-3 cyclesContinued for 2-3 cycles
Conception occurs within 4-6 cyclesConception occurs within 4-6 cycles
If no, dose increasedIf no, dose increased
Other Uses:Other Uses:
Assisted reproduction (to develop multiple eggs)Assisted reproduction (to develop multiple eggs)
Artificial insemination (irregular ovulation)Artificial insemination (irregular ovulation)
(Clomiphene Challenge Test)(Clomiphene Challenge Test)
Oligospermia (25 mg daily for 6 months – 6 daysOligospermia (25 mg daily for 6 months – 6 days
rest))rest))
45. Tamoxifen (SERM)Tamoxifen (SERM)
Actions:Actions:
Is a competitive antagonist to estrogen at receptors in theIs a competitive antagonist to estrogen at receptors in the
breast.breast.
Partial agonist at other estrogen receptors (thus minimizing sidePartial agonist at other estrogen receptors (thus minimizing side
effects due to estrogen deprivation) - bone, uterus, liver andeffects due to estrogen deprivation) - bone, uterus, liver and
pituitarypituitary
Hot flushes – antiestrogenic actionHot flushes – antiestrogenic action
Decrease in LDL level but no change in HDL levelDecrease in LDL level but no change in HDL level
Improvement in bone mass and lipid profileImprovement in bone mass and lipid profile
Kinetics: Absorbed orally and has biphasic half life – 10Kinetics: Absorbed orally and has biphasic half life – 10
Hrs and 7 days – long duration of actionHrs and 7 days – long duration of action
Excreted in BileExcreted in Bile
Dose is 10 to 20 mg BDDose is 10 to 20 mg BD
46. Tamoxifen – contd.Tamoxifen – contd.
Uses:Uses:
Breast carcinoma of pre and post menopauseBreast carcinoma of pre and post menopause
Adjuvant therapy in early casesAdjuvant therapy in early cases
Palliative therapyPalliative therapy
Side effects.Side effects.
The drug has a low incidence of adverse reactionsThe drug has a low incidence of adverse reactions
Hot flashes, nausea, vomiting, rash, menstrual irregularities andHot flashes, nausea, vomiting, rash, menstrual irregularities and
bleeding, infrequent depression, headache, hypercalcemia,bleeding, infrequent depression, headache, hypercalcemia,
edema, and blood dyscrasiasedema, and blood dyscrasias
Less toxic than anticancer drugsLess toxic than anticancer drugs
Other SERM –Other SERM – Raloxifene, ormeloxifene etc.Raloxifene, ormeloxifene etc.
Raloxifene is estrogen antagonist of breast and endometriumRaloxifene is estrogen antagonist of breast and endometrium
while partial agonist of bone and CVSwhile partial agonist of bone and CVS
CH2CH3
O(CH3)2N-CH2-CH2
TAMOXIFEN (NOLVADEX)
47. Aromatase InhibitorsAromatase Inhibitors
Letrozole, Anastrozole and ExemestaneLetrozole, Anastrozole and Exemestane
MOA: LetrozoleMOA: Letrozole
Non steroidal compound, reversible inhibition ofNon steroidal compound, reversible inhibition of
aromatization all over the bodyaromatization all over the body
Suppression of proliferation of estrogen dependantSuppression of proliferation of estrogen dependant
breast carcinoma cellsbreast carcinoma cells
Rapid oral absorption – 100% bioavailability, large Vd,Rapid oral absorption – 100% bioavailability, large Vd,
t1/2 – 40 Hrst1/2 – 40 Hrs
Uses: Early breast carcinoma and AdvancedUses: Early breast carcinoma and Advanced
breast carcinomabreast carcinoma
50. Actions of ProgesteroneActions of Progesterone
Uterus:Uterus:
Responsible for Luteal phase of endometriumResponsible for Luteal phase of endometrium
High level (pregnancy and luteal phase)High level (pregnancy and luteal phase)
prevents secretion of gonadotrophinsprevents secretion of gonadotrophins
Maintenance of pregnancy – nidation andMaintenance of pregnancy – nidation and
maintenance of pregnancymaintenance of pregnancy
Decrease uterine motilityDecrease uterine motility
Depression of T-cell function and CMIDepression of T-cell function and CMI
MenstruationMenstruation
51. Actions – contd.Actions – contd.
Cervix:Cervix: viscid and cellular secretion – no sperm penetrationviscid and cellular secretion – no sperm penetration
Vagina:Vagina: Pregnancy like changes – leucocyte infiltration andPregnancy like changes – leucocyte infiltration and
cornified epitheliumcornified epithelium
Breast:Breast: Proliferation of acini in mammary glandsProliferation of acini in mammary glands
Prepares breast for lactation together with estrogenPrepares breast for lactation together with estrogen
Metabolism:Metabolism:
impairment of glucose toleranceimpairment of glucose tolerance
Counteraction of benefits of oestrogensCounteraction of benefits of oestrogens
CNS:CNS: SedationSedation
Respiration:Respiration: StimulationStimulation
Body temperature:Body temperature: rise in temperaturerise in temperature
Pituitary:Pituitary: Weak Gn inhibitor, suppresses ovulation if given duringWeak Gn inhibitor, suppresses ovulation if given during
follicular phasefollicular phase
52. Progesterone – contd.Progesterone – contd.
MOA:MOA:
Receptors are confined to female genital tracts,Receptors are confined to female genital tracts,
breasts and CNSbreasts and CNS
PRs are present in nucleus of target cellsPRs are present in nucleus of target cells
PR exists in 2 forms – PR-A and PR-B isoformsPR exists in 2 forms – PR-A and PR-B isoforms
(differing activities)(differing activities)
Kinetics:Kinetics:
Inactive orally, high first pass metabolismInactive orally, high first pass metabolism
Synthetics are active orally and metbolized slowlySynthetics are active orally and metbolized slowly
Half-life of 8-24 HRsHalf-life of 8-24 HRs
53. Uses of ProgestinsUses of Progestins
ContraceptiveContraceptive
Hormonl replcement therapyHormonl replcement therapy
Dysfunctional Uterine Bleeding: anovulatoryDysfunctional Uterine Bleeding: anovulatory
cyclescycles
Endometriosis: anovulatory hypoestrogenic stateEndometriosis: anovulatory hypoestrogenic state
is created by progesteroneis created by progesterone
Premenstrual syndromePremenstrual syndrome
Threatened and habitual abortionThreatened and habitual abortion
Endometrial carcinomaEndometrial carcinoma
54. Adverse EffectsAdverse Effects
Breast engorgement, headache, rise in body temp.,Breast engorgement, headache, rise in body temp.,
oedema, acne & mood swingsoedema, acne & mood swings
Masculinization of external genitalia in the foetusMasculinization of external genitalia in the foetus
Increased incidences of congenital abnormalitiesIncreased incidences of congenital abnormalities
Irregular bleeding or amenorrheaIrregular bleeding or amenorrhea
Lower HDL (19-nortestosterone derivatives)Lower HDL (19-nortestosterone derivatives)
HyperglycaemiaHyperglycaemia
55. Antiprogestin - MifepristoneAntiprogestin - Mifepristone
19-norsteroid compound – antiprogestational,19-norsteroid compound – antiprogestational,
antiglucocorticoid and antiandrogenic actionantiglucocorticoid and antiandrogenic action
Actions:Actions:
Follicular phase: attenuation of Gn discharge – slowFollicular phase: attenuation of Gn discharge – slow
follicular development, failure of ovulationfollicular development, failure of ovulation
Luteal phase: prevents secretory changes brought aboutLuteal phase: prevents secretory changes brought about
by progesteroneby progesterone
Late cycle: Blocking of Progesterone action, increasedLate cycle: Blocking of Progesterone action, increased
PG release – uterine contractionPG release – uterine contraction
Sensitization of endometrium to PG – menstruationSensitization of endometrium to PG – menstruation
On Implantation: Blocking of decidution and dislodging ofOn Implantation: Blocking of decidution and dislodging of
conceptusconceptus
In Menopause – progestational activityIn Menopause – progestational activity
56. Mifepristone – contd.Mifepristone – contd.
Kinetics:Kinetics: Absorbed orally and bioavailability is onlyAbsorbed orally and bioavailability is only
25% and half-life is 20-36 hrs25% and half-life is 20-36 hrs
CYP3A4CYP3A4
Uses:Uses:
1.1. Termination of PregnancyTermination of Pregnancy
2.2. Cervical primingCervical priming
3.3. Postcoital contraceptivePostcoital contraceptive
4.4. Induction of labour: single dose 2 days afterInduction of labour: single dose 2 days after
midcyclemidcycle
5.5. Cushing SyndromeCushing Syndrome
– Preparations: Tablet – 200 mgPreparations: Tablet – 200 mg
58. Methods of ContraceptionMethods of Contraception
Direct inhibition of spermatogenesisDirect inhibition of spermatogenesis
Indirect inhibition of spermatogenesisIndirect inhibition of spermatogenesis
Immunological techniques (vaccine)Immunological techniques (vaccine)
Inhibition of ovulation (Hormonal contraceptives)Inhibition of ovulation (Hormonal contraceptives)
Prevention of fertilizationPrevention of fertilization
Anti-zygotic drugsAnti-zygotic drugs
Inhibition of implantationInhibition of implantation
use of spermicidal in vaginause of spermicidal in vagina
IUCDIUCD
60. HistoryHistory
The oral contraceptive pill (combined OC) was firstThe oral contraceptive pill (combined OC) was first
introduced in 1960introduced in 1960
1970: Introduction low dose or second generation of1970: Introduction low dose or second generation of
OCSOCS
1980: biphasic or triphasic regimens1980: biphasic or triphasic regimens
1990: 3rd generation OCS1990: 3rd generation OCS
(O + P has less androgenic activity,(O + P has less androgenic activity,
e.g, norgestimate 0.25mg or desogestrel 0.15 mg)e.g, norgestimate 0.25mg or desogestrel 0.15 mg)
Since then it has undergone many modifications and hasSince then it has undergone many modifications and has
been used by millions of women worldwide.been used by millions of women worldwide.
61. Combined PillCombined Pill
Low-dose oral contraceptives: productsLow-dose oral contraceptives: products
containing less than 50ug ethinyl estradiolcontaining less than 50ug ethinyl estradiol
First generation oral contraceptives:First generation oral contraceptives:
products containing 50ug or more of ethinyl estradiolproducts containing 50ug or more of ethinyl estradiol
Second generation oral contraceptives:Second generation oral contraceptives:
products containing levonorgestrel, norgestimate andproducts containing levonorgestrel, norgestimate and
other members of northindrone family and 30 or 40ugother members of northindrone family and 30 or 40ug
ethinyl estradiolethinyl estradiol
Third generation oral contraceptives:Third generation oral contraceptives:
products containing desogestrel or gestodene with 20 orproducts containing desogestrel or gestodene with 20 or
30ug ethinyl estradiol30ug ethinyl estradiol
Newer progestins (gestodene and desogestrel) have beenNewer progestins (gestodene and desogestrel) have been
shown to have little or no androgenic activityshown to have little or no androgenic activity
62. FormulationsFormulations
Formulations may be :Formulations may be :
1.1. MonophasicMonophasic (each tablet contains a fixed(each tablet contains a fixed
amount of estrogen and progestin);amount of estrogen and progestin);
2.2. BiphasicBiphasic (each tablet contains a fixed amount(each tablet contains a fixed amount
of estrogen, while the amount of progestinof estrogen, while the amount of progestin
increases in the second half of the cycle); orincreases in the second half of the cycle); or
3.3. TriphasicTriphasic (the amount of estrogen may be fixed(the amount of estrogen may be fixed
or variable, while the amount of progestinor variable, while the amount of progestin
increases in 3 equal phases).increases in 3 equal phases).
63. FormulationsFormulations
Biphasic and triphasicBiphasic and triphasic formulations were initiallyformulations were initially
developed with the intent of lowering the total steroiddeveloped with the intent of lowering the total steroid
content of combined OCs (estrogen – 30 to 40 mcg)content of combined OCs (estrogen – 30 to 40 mcg)
Two types of estrogen are used in combined OCs:Two types of estrogen are used in combined OCs:
ethinyl estradiol and mestranolethinyl estradiol and mestranol
Mestranol is aMestranol is a “prodrug”“prodrug” that is converted in vivo tothat is converted in vivo to
ethinyl estradiolethinyl estradiol
Several different progestins, of varying degrees ofSeveral different progestins, of varying degrees of
progestational potency, are used in combined OCsprogestational potency, are used in combined OCs
65. MinipillMinipill
Progesterone only pillProgesterone only pill
To eliminate estrogen to avoid long termTo eliminate estrogen to avoid long term
risks of estrogenrisks of estrogen
Low dose estrogen is taken daily withoutLow dose estrogen is taken daily without
gapgap
Efficacy is 96-98%Efficacy is 96-98%
67. InjectableInjectable
Long acting Progestin aloneLong acting Progestin alone
1.1. Depot medroxyprogesterone (DMPA) – 150Depot medroxyprogesterone (DMPA) – 150
mg (1 ml vial) – half life – 50 days)mg (1 ml vial) – half life – 50 days)
2.2. Norethidrone (Norethisterone) – 200 mg (1Norethidrone (Norethisterone) – 200 mg (1
ml vial) – repeat at 2 monthsml vial) – repeat at 2 months
Long acting progestin + estrogen:Long acting progestin + estrogen:
Medroxyprogesterone + estradol cypionate –Medroxyprogesterone + estradol cypionate –
IM injection – monthlyIM injection – monthly
Implants – norplants, progestesert etc.Implants – norplants, progestesert etc.
68. Missed Pill AdviseMissed Pill Advise
If 1 or 2 of 30-35mcg ethinylestradiol pill or 1 of 20If 1 or 2 of 30-35mcg ethinylestradiol pill or 1 of 20
mcgmcg
Advise to take the most recent pill as soon as remembers,Advise to take the most recent pill as soon as remembers,
continue taking remaining pill at usual time, she does not requirecontinue taking remaining pill at usual time, she does not require
additional contraception or emergency contraceptionadditional contraception or emergency contraception
If 3 or more of 30-35 or 2 or more 20 mcgIf 3 or more of 30-35 or 2 or more 20 mcg
Advise as above, but to use extra method of contraception untilAdvise as above, but to use extra method of contraception until
pills have been taken for 7 days in a rowpills have been taken for 7 days in a row
If pill is missed in week 1 ( days1-7)and unprotected sexualIf pill is missed in week 1 ( days1-7)and unprotected sexual
intercourse has taken place in pill free week or wk 1 thenintercourse has taken place in pill free week or wk 1 then
emergency contraception is neededemergency contraception is needed
If pills missed in wk 3 ( days 15-21), advise to finish pill in packIf pills missed in wk 3 ( days 15-21), advise to finish pill in pack
and start new pack the next day, omitting pill free intervaland start new pack the next day, omitting pill free interval
If one has missed > 7 consecutive days then consider asIf one has missed > 7 consecutive days then consider as
stopped COCPstopped COCP
69. Mechanism of actionMechanism of action
Combination pill, given daily for 3 of every 4Combination pill, given daily for 3 of every 4
weeks:weeks:
Prevents ovulation by inhibiting gonadotropinPrevents ovulation by inhibiting gonadotropin
secretion via effect on both pituitary andsecretion via effect on both pituitary and
hypothalamic centershypothalamic centers
Progestational agent in pill ; suppresses LHProgestational agent in pill ; suppresses LH
secretion(thus prevents ovulation)secretion(thus prevents ovulation)
Estrogenic agent ; suppresses FSH secretion (thusEstrogenic agent ; suppresses FSH secretion (thus
prevents selection and emergence of dominantprevents selection and emergence of dominant
follicle)follicle)
Progestin only preparations – suppresses LH surgeProgestin only preparations – suppresses LH surge
and also by direct actionand also by direct action
70. Mechanism of action – contd.Mechanism of action – contd.
Thick Cervical mucus secretion makingThick Cervical mucus secretion making
hostile for sperm penetrationhostile for sperm penetration
Failure of implantation – hyperproliferativeFailure of implantation – hyperproliferative
and hypersecretory endometriumand hypersecretory endometrium
Uterine and tubal contraction – peristalsisUterine and tubal contraction – peristalsis
within the fallopian tubewithin the fallopian tube
Dislodging of implanted blastocyteDislodging of implanted blastocyte
71. Adverse EffectsAdverse Effects
Some combined OC users will experience minor side-Some combined OC users will experience minor side-
effects, most commonly during the first 3 cycles.effects, most commonly during the first 3 cycles.
These side-effects may lead to discontinuation of theThese side-effects may lead to discontinuation of the
combined OCcombined OC
The most common reason patients discontinueThe most common reason patients discontinue
combined OC use is:combined OC use is:
1.1. Abnormal menstrual bleeding, followed by :Abnormal menstrual bleeding, followed by :
2.2. Nausea,Nausea,
3.3. Weight gain,Weight gain,
4.4. Mood changes,Mood changes,
5.5. Breast tendernessBreast tenderness
6.6. Headache.Headache.
73. Serious ComplicationsSerious Complications
Leg vein and pulmonary thrombosisLeg vein and pulmonary thrombosis
Coronary and cerebral thrombosisCoronary and cerebral thrombosis
HypertensionHypertension
Genital carcinomaGenital carcinoma
Benign hepatomasBenign hepatomas
GallstonesGallstones
74. Contraindications (WHO)Contraindications (WHO)
1.1. < 6 weeks postpartum if breastfeeding< 6 weeks postpartum if breastfeeding
2.2. Smoker over the age of 35 (≥ 15 cigarettes per day)Smoker over the age of 35 (≥ 15 cigarettes per day)
3.3. Hypertension (systolic ≥ 160mm Hg or diastolic ≥ 100mm Hg)Hypertension (systolic ≥ 160mm Hg or diastolic ≥ 100mm Hg)
4.4. Current or past history of venous thromboembolism (VTE)Current or past history of venous thromboembolism (VTE)
5.5. Ischemic heart diseaseIschemic heart disease
6.6. History of cerebrovascular accidentHistory of cerebrovascular accident
7.7. Complicated valvular heart diseaseComplicated valvular heart disease
8.8. Migraine headacheMigraine headache
9.9. Breast cancer (current)Breast cancer (current)
10.10. Diabetes with retinopathy/nephropathy/neuropathyDiabetes with retinopathy/nephropathy/neuropathy
11.11. CirrhosisCirrhosis
12.12. Liver tumour (adenoma or hepatoma)Liver tumour (adenoma or hepatoma)
75. Relative ContraindicationsRelative Contraindications
1.1. Smoker over the age of 35 (< 15 cigarettes per day)Smoker over the age of 35 (< 15 cigarettes per day)
2.2. Adequately controlled hypertensionAdequately controlled hypertension
3.3. Hypertension (systolic 140–159mm Hg,Hypertension (systolic 140–159mm Hg,
diastolic 90–99mm Hg)diastolic 90–99mm Hg)
4.4. Migraine headache over the age of 35Migraine headache over the age of 35
5.5. Currently symptomatic gallbladder diseaseCurrently symptomatic gallbladder disease
6.6. History of combined OC-related cholestasisHistory of combined OC-related cholestasis
7.7. Mentally illMentally ill
8.8. Undiagnosed vaginal BleedingUndiagnosed vaginal Bleeding
Centchroman and male contraceptiveCentchroman and male contraceptive
76. Remember !Remember !
Pharmacological actions of testosterone, mechanism ofPharmacological actions of testosterone, mechanism of
action, adverse effects and therapeutic usesaction, adverse effects and therapeutic uses
Danazol, Flutamide and Finasteride detailsDanazol, Flutamide and Finasteride details
Anabolic SteroidsAnabolic Steroids
Actions of Oestrogens and usesActions of Oestrogens and uses
Clomiphene citrate in detailClomiphene citrate in detail
Antiprogestin – MifepristoneAntiprogestin – Mifepristone
Different contraceptive measureDifferent contraceptive measure
Different Hormonal contraceptivesDifferent Hormonal contraceptives
Mechanism of action, adverse effects andMechanism of action, adverse effects and
contraindications of OCPscontraindications of OCPs
Penile erection occurs when blood swells the corpus cavernosum, an effect facilitated by relaxation of regional smooth muscle. Smooth muscle tone is regulated by cellular Ca2+, which activates the Ca2+/calmodulin (CaM)-dependent enzyme myosin light chain kinase (MLCK), which leads to MLC phosphorylation and contraction. The nitric oxide (NO) pathway leads to relaxation of smooth muscle by stimulating the soluble guanylyl cyclase (sGC), which results in the production of cyclic GMP (cGMP) and the activation of cGMP-dependent protein kinase (PKG). PKG causes smooth-muscle relaxation by mechanisms that are still being defined and that might include a reduction in cytosolic Ca2+ (by enhanced Ca2+ export and/or by reduced inositol trisphosphate (InsP3) receptor-mediated Ca2+ mobilization) and dephosphorylation of myosin light chains (by activation of MLC phosphatase and/or by sequestration of MLCK in a phosphorylated form that is not readily activated by Ca2+/CaM). Viagra® specifically inhibits the breakdown of cellular cGMP by PDE5 (an isoform of phosphodiesterase that is localized to erectile tissue), and thereby prolongs and enhances the effects of NO/cGMP.
- not a product of the ovary, estriol is the predominant urinary end product of estrogen metabolism. In the pregnant woman, estriol, as estradiol and estrone, are secreted by the placenta. Displays minimal estrogenic activity.
Increased NO. PGI2 synthesis – hyperinsulinemia prevention by estrogen
Perform a clomiphene challenge test, which is sometimes used to evaluate a woman&apos;s ovulation and egg quality (ovarian reserve). When given early in a woman&apos;s menstrual cycle for 5 days, clomiphene elevates a woman&apos;s follicle-stimulating hormone (FSH) level. On the next day, an FSH blood level that has dropped back to normal is a sign of a normal ovarian reserve and ovulation. An elevated FSH is a sign of low ovarian reserve. Women with a diminished ovarian reserve can use donor eggs, which greatly improves their chances of giving birth to a healthy child.
Progesterone acts as a Brain anaesthetic. Increase MAO concentration thus producing depression and irritability