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Worksheets[PHARM] Endo 2 Adrenal drugs
Total questions: 43
Worksheet time: 22mins
Indications
• Replacement therapy in adrenal failure (Addison’s disease)
• Anti-inflammatory/Immunosuppressive therapy
- Asthma
- Various inflammatory conditions of the skin, eye, ear, or nose
- Hypersensitivity states
Glucocorticoids
Mineralocorticoids
Both
Adverse effects
• Oral thrush
• Iatrogenic Cushing's
• Osteoporosis
• Hyperglycemia
Glucocorticoids
Mineralocorticoids
Both
Adverse effects
• Muscle wasting
• CNS effects (euphoria, depression, & psychosis)
• Glaucoma
• Increased incidence of cataracts
• Raised intra-cranial pressure
Glucocorticoids
Mineralocorticoids
Both
• Most important mineralocorticoid
• Promote the reabsorption of sodium from the distal part of the distal convoluted renal tubule and from the cortical collecting tubules
• Excessive secretion: hypokalemia, metabolic alkalosis, increased plasma volume, and hypertension
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
• Secreted at the rate of 100-200 mcg/d in normal individuals with a moderate dietary salt intake
• Half-life: 15-20 minutes
• Metabolism is similar to that of cortisol
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
• Precursor of aldosterone
• Normally secreted in amounts of about 200 mcg/d
• Half-life: 70 mins
• Plasma conc: 0.03mcg/dL
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
• Secretion is primarily under the control of ACTH
• Secretion of DOC may be markedly increased in abnormal conditions such as:
- Adrenocortical carcinoma
- Congenital adrenal hyperplasia with reduced P450c11 or P450c17 activity
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
• Potent steroid with both glucocorticoid and mineralocorticoid activity
• Most commonly-prescribed salt-retaining hormone
• Increases Na reabsorption in the distal tubules and increases K
and H efflux into the tubules
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
• Oral doses of 0.1 mg two to seven times weekly have potent salt-retaining activity and are used in the treatment of adrenocortical insufficiency associated with mineralocorticoid deficiency
- These dosages are too small to have important anti-inflammatory or antigrowth effects
Oxytocin
Aldosterone
Deoxycorticosterone
Fludrocortisone
MOA/PK
• Blocks the conversion of cholesterol to pregnenolone
• Increases the clearance of some steroids.
• Shown to enhance the metabolism of Dexamethasone, reducing its half-life from 4–5 hours to 2 hours
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Used in conjunction with dexamethasone or hydrocortisone to reduce or eliminate estrogen production in patients with carcinoma of the breast
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Used in conjunction with metyrapone or ketoconazole
to reduce steroid secretion in patients with Cushing’s syndrome
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Adverse effects
- In higher doses: lethargy an skin rash
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
MOA/PK
• Antifungal imidazole derivative
• Potent and rather nonselective inhibitor of adrenal and gonadal steroid synthesis
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Treatment of patients with Cushing’s syndrome
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Adverse effects
• Hepatotoxic
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
MOA/PK
• Substituted imidazole
• Inhibits adrenal steroidogenesis at the level of 11β- hydroxylase
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Induction of general anesthesia and sedation
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Only parenteral medication available in the treatment of severe Cushing’s syndrome
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
MOA/PK
• Relatively selective inhibitor of steroid 11-hydroxylation, interfering with cortisol and corticosterone synthesis
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• May be useful in the management of severe manifestations of cortisol excess
• Commonly used in tests of adrenal function
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
Indications
• Only adrenal inhibiting medication that can be administered to pregnant women with Cushing’s syndrome
Aminoglutethimide
Ketoconazole
Etomidate
Metyrapone
MOA/PK
• 3β -17 hydroxysteroid dehydrogenase inhibitor
• Interferes with the synthesis of adrenal and gonadal hormones
Trilostane
Abiraterone
Mifepristone
Mitotane
Indications
• Primary aldosteronism
• Comparable to aminoglutethimide
Trilostane
Abiraterone
Mifepristone
Mitotane
Adverse effects
• Gastrointestinal disturbances
- occurs in 50% of px
Trilostane
Abiraterone
Mifepristone
Mitotane
MOA/PK
• Newest of the steroid synthesis inhibitors
• Blocks 17α-hydroxylase (P450c17) and 17,20-lyase
• Orally active steroid prodrug
Trilostane
Abiraterone
Mifepristone
Mitotane
Indications
• Treatment of refractory prostate cancer
Trilostane
Abiraterone
Mifepristone
Mitotane
MOA/PK
• Pharmacologic antagonist at the steroid receptor
• Strong anti-progestin activity
• At high doses: exert anti-glucocorticoid activity by blocking the glucocorticoid receptor
• Causes generalized glucocorticoid resistance
Trilostaine
Abiraterone
Mifepristone
Mitotane
MOA/PK
• Mean half-life: 20 hours
• Less than 1% of daily dose is excreted in the urine
• Long plasma half-life results from extensive and strong binding to plasma proteins
Trilostane
Abiraterone
Mifepristone
Mitotane
Indications
Given orally to inoperable patients with ectopic ACTH secretion or adrenal carcinoma who have failed to respond to other treatment
Trilostane
Abiraterone
Mifepristone
Mitotane
Indications
• Initially proposed as a contraceptive-contragestive agent
Trilostane
Abiraterone
Mifepristone
Mitotane
MOA/PK
• Non-selective cytotoxic action on the adrenal cortex in dogs and to a lesser extent in humans
• Inhibits CYP11A1
Trilostane
Abiraterone
Mifepristone
Mitotane
Indications
• Used to treat inoperable adrenocortical carcinoma
Trilostane
Abiraterone
Mifepristone
Mitotane
Dosing
• Administered orally in divided doses up to 12g daily
Trilostane
Abiraterone
Mifepristone
Mitotane
Adverse effects
• Diarrhea
• Nausea
• Vomiting
• Depression
• Somnolence
• Skin rashes
Trilostane
Abiraterone
Mifepristone
Mitotane
MOA/PK
• Compete with aldosterone for its receptor and decrease its effect peripherally
• Onset of actions is slow
• Effects last for 2-3 days after discontinuation
Spironolactone
Eplerenone
Drospirenone
Indications
• Treatment of primary aldosteronism
• Treatment of hirsutism and acne in women
• Also, a diuretic
Spironolactone
Eplerenone
Drospirenone
Adverse effects
• Hyperkalemia
• Cardiac arrhythmia
• Menstrual abnormalities
• Gynecomastia
• Sedation
• Headache
• GI disturbances
• Skin rashes
Spironolactone
Eplerenone
Drospirenone
MOA/PK
• Aldosterone antagonist
Spironolactone
Eplerenone
Drospirenone
Indications
• Treatment of hypertension and heart failure
• Used to treat Primary and Secondary Hyperaldosteronism
Spironolactone
Eplerenone
Drospirenone
Adverse effects
• Cause fewer adverse effects
• Hyperkalemia
Spironolactone
Eplerenone
Drospirenone
MOA/PK
• Aldosterone antagonist
Spironolactone
Eplerenone
Drospirenone
Indications
• Oral contraceptive
• Good effect against acne in women
Spironolactone
Eplerenone
Drospirenone
