Drugs Flashcards
Describe the mechanism of action of the following hypoglycemic agents:
SULFONYLUREAS + MEGLITINODES
insulin secretion from pancreatic beta- cells
Describe the mechanism of action of the following hypoglycemic agents:.
Biguanides
Insulin sensitizing effects
Describe the mechanism of action of the following hypoglycemic agents:
Thiazolidinediomes
Improved insulin sensitivity + suppress hepatic glucose production
Describe the mechanism of action of the following hypoglycemic agents:
Alpha glucosidase inhibitor
Delay breakdown of complex carbohydrates
Describe the mechanism of action of the following anticoagulant agent
Clopidogrel
Block platelet aggregation
Describe the mechanism of action of the following anticoagulant:
Aspirin
Irreversible inhibitor of cyclo-oxygenase (thromboxane A2)
Describe the mechanism of action of the following anticoagulant:
Warfarin
Vitamin K + protein C/S
Describe the mechanism of action of the following anticoagulant + monitoring:
Unfractionated heparin
Potentiation of AT activity
PTT
Describe the mechanism of action of the following anticoagulant + monitoring:
Low molecular weight heparin
Inhibits function of Xa
Monitor Xa activity
Describe the mechanism of action of the following anticoagulant:
Tissue plasminogen activator
Increase plasmin at site of clot = increase fibrinolysis
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects
Glucocorticoids
Regulate gene expression
Inhibit chemotactic factors
Release arachidonic acids
Primary effects on T cells
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects:
Azathioprine
Purine analogue –> inhibits synthesis of de novo purine
Acts mostly on lymphocytes and humoral immunity
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects
Mycophenolate
Inhibits synthesis of purine (second generation) –> inhibits cytokine and growth factor
Blocks T cell progression from G1 to S
Block B cell proliferation
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects:
Leflunomide
Inhibits novo pyrimidine synthesis during S phase –> Inhibits cytokine and growth factor, suppress lymphocyte proliferation
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects
Cyclosporine
Calcuneurin inhibitor, which inhibits kinase and phosphatase by impeding calcium dependant transduction and cause disruption of maturation of T cells at G0-G1 phase
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects
Tacrolimus
Calcuneurin inhibitor, which inhibits kinase and phosphatase by impeding calcium dependant transduction and cause disruption of maturation of T cells at G0-G1 phase
Describe the mechanism of action of the following immunosuppressive therapy and it’s effects
Cyclophosphamide
Also name a specific side effect
Alkylation of DNA during S phase –> suppress both T cell and antibodies production
Hemorrhagic cystitis
Describe the mechanism of action of the following GI therapy and it’s effects:
Famotidine
H2 receptor antagonist - binds histamine
Describe the mechanism of action of the following GI therapy and it’s effects:
Omeprazole
Proton pump inhibitor
Blocks H-K ATPase enzyme pump on apical surface of parietal cells
Describe the mechanism of action of the following GI therapy and it’s effects:
Misoprostol
Prostaglandin analog –> enhance gastric mucosal defense (bicarbonate, mucous and blood supply) + decrease proton pump
Describe the mechanism of action of the following GI therapy and it’s effects:
Sucralfate
Negative charge sulfate
Binds to positive molecules exposed in damage mucosa
Describe the mechanism of action of the following GI therapy and it’s effects:
Metoclopramide
Sérotoninergic (5-HT4 receptor)
Acts on pyloric antrum and duodenum : antiemetic
Describe the mechanism of action of the following GI therapy and it’s effects:
Cidapride
Sérotoninergic (5-HT4 receptor)
Acts on whole intestinal tract
Describe the mechanism of action of the following GI therapy and it’s effects:
Ranitidine
Achesterase inhibitor (stimulate M3 receptor) + H2 antagonist Whole GI
Describe the mechanism of action of the following GI therapy and it’s effects:
Maropitant
NK1 antagonist
Block substance P
Describe the mechanism of action of the following GI therapy and it’s effects:
Ondansetron
5-HT3-antagonist
Block peripheral and central stimuli for vomiting
Describe the mechanism of action of the following agents along with its indication:
Albendazole
Benzimidazole –> inhibits intestinal parasites microtubular function
Pneumocystis, encephalitozoon, nematodes and protozoa
Describe the mechanism of action of the following agents and its indication?
Decoquinate
Hydroxyquinolone – interfere with sporozoites stage
Antiprotozoal, coccidio static (hepatozoon, sarcocystis, toxoplasmose, neospora)
Describe the mechanism of action of the following agents and its indication?
Fenbendazole
Benzimidazole –> inhibits intestinal parasites microtubular function
Antiprotozoal and anthelmintic
Describe the mechanism of action of the following agents ?
Benazepril / enalapril
ACE inhibitor
Decreases efferent glomerular resistance –> decreases GFR
Note: benazepril has some hepatic elimination
Describe the mechanism of action of the following agent?
Telmisartan
Inhibits binding of angiotensin II to AT1 recepetors
Describe the mechanism of action of the following agent?
Furosemide
Loop diuretic that blocks Na/K/Cl
Describe the mechanism of action of the following agent ?
Hydrochlorothiazide
Diuretic that acts on distal and collecting tubule to block Na/Cl carrier
Describe the mechanism of action of the following agent ?
Nitroglycerine
Increase formation of NO / GMPc –> decrease preload (venodilation)
Describe the mechanism of action of the following agent ?
Spironolactone
Aldosterone receptor inhibitor that acts on collecting tubule
Describe the mechanism of action of the following agent ?
Pimobendan
Phosphodiesterase III inhibitor that has inotropic and vasodilation effects
Describe the mechanism of action of the following agent?
Amlodipine
Calcium chanel blockers that helps dilation of afferent renal arterioles (increases GFR)
Describe the mechanism of action of the following agent?
Sildenafil
Phosphodiesteras V inhibitor that causes vasodilation by increasing pulmonary cGMP (thus increases NO duration)
Describe the mechanism of action of the following agent and its class and its indication?
Diltiazem
Calcium channel blocker (Type 4)
For supraventricular arrhythmia
Describe the mechanism of action of the following agent and its class and its indication?
Amiodarone
Potassium, sodium, calcium channels blocker and B-blocker (Type 1 and 4)
Prolonged refractory period, which shows AV conduction –> Afib or Vfib
Describe the mechanism of action of the following agent and its class and its indication?
Atenolol
B-blocker (Type 2)
Decrease HR and force of contraction (inotrope inhibitor) for supraventricular tachycardia (NOT if CHF)
Describe the mechanism of action of the following agent and its class and its indication?
Sotanolol
Potassium channel blocker, non-specific beta-blocker (type 3 and 2)
prolonged refractory period - Ventricular tachycardia