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Answers to short question about various drugs acting on the renal system, including vasopressin analogues, adh, carbonic anhydrase inhibitors, osmotic diuretics, and diuretic classifications. It also mentions uses and adverse effects of these drugs.
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1. Name four vasopressin analogues? Answer: Vasopressin analogues are the drugs which function similar to vasopressin but differ in chemical structure. Examples of vasopressin analogues are: - Desmopressin - Terlipressin - Lypressin - Felypressin 2. Name any two ADH and its two uses. Answer: ADH is secreted by posterior pituitary gland and has anti-diuretic effect. Examples of ADH are: - Desmopressin: Uses- Used in treatment of Diabetes Insipidus (DI) of pituitary origin also known as neurogenic DI or central DI. - Terlipressin: Uses- Used for treatment of bleeding oesophageal varices.
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DRUG USES Desmopressin Used in treatment of Diabetes Insipidus (DI) of pituitary origin also known as neurogenic DI or central DI. Terlipressin Used for treatment of bleeding oesophageal varices.
3. Define carbonic anhydrase inhibitors? Give two examples. Answer: Carbonic anhydrase inhibitors are the class of drugs which primarily act on the Carbonic anhydrase enzyme and inhibit their activity of reabsorption of HCO 3 -^ and Na+^ and thereby promoting its diuresis. Examples of Carbonic anhydrase inhibitors are: - Acetazolamide - Methazolamide Carbonic anhydrase inhibitor
Carbonic anhydrase enzyme Inhibi�on of HCO 3 -^ and Na+^ reabsorp�on.
Diuresis of HCO 3 -
4. What are osmotic diuretics? Write their uses. Answer: Osmotic diuretics are pharmacologically inert substances that increases osmolarity of blood and renal filtrate hence inhibiting water and sodium reabsorption causing diuresis. Examples- Mannitol, urea, glycerol Uses- Used for treatment of glaucoma Used for treating oliguria due to shock and severe trauma. 5. Classify diuretics showing their site of action in nephron. Answer: Classification of diuretics based on site of action on nephron - Proximal Convoluted Tubule (PCT) 1. Carbonic Anhydrase Inhibitor : Acetazolamide, Methazolamide 2. Osmotic Diuretics: Mannitol, Urea, Glycerol - Loop of Henle 1. Loop Diuretics: Furosemide, Torsemide, Azosemide 2. Osmotic Diuretics: Mannitol, Urea, Glycerol - Distal Convoluted Tubule (DCT) 1. Potassium Sparing Diuretics : Triamterene, Spironolactone 2. Thiazides : Chlorothiazide, Hydrochlorothiazide - Collecting Ducts (CD) 1. Potassium Sparing Diuretics : Triamterene, Spironolactone
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Class of Drugs Site of Action Examples Carbonic anhydrase inhibitor Proximal convoluted tubule Acetazolamide, Methazolamide Osmotic diuretics Proximal convoluted tubule, Loop of Henle
Mannitol, Urea, Glycerol Loop diuretics Loop of Henle Furosemide, Torsemide, Azosemide
Potassium sparing diuretics Distal convoluted tubule, Collecting tubule
Triamterene, Spironolactone
Thiazides Distal convoluted tubule Chlorothiazide, Hydrochlorothiazide
Osmotic diuretics
Increased osmolarity of blood and renal filtrate
Decreased reabsorp�on
Increased diuresis