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Pharmacology of Drugs Acting on the Renal System: Q&A for Pharm D Students, Exams of Pharmacology

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.

Typology: Exams

2023/2024

Available from 04/11/2024

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3rd Pharm D, Pharmacology-II
Rajiv Gandhi University of Health Sciences (RGUHS):
Short Q&A on Pharmacology of Drugs acting on Renal system.
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.
OR
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 HCO3- and Na+ and
thereby promoting its diuresis.
Examples of Carbonic anhydrase inhibitors are:
Acetazolamide
Methazolamide
Carbonic anhydrase inhibitor
Carbonic anhydrase enzyme Inhibi�on of HCO3- and Na+ reabsorp�on.
Diuresis of HCO3-
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3 rd^ Pharm D, Pharmacology-II

Rajiv Gandhi University of Health Sciences (RGUHS):

Short Q&A on Pharmacology of Drugs acting on Renal system.

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.

OR

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

OR

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