Antibiotics, Fungal, Protozoal, Helminths Flashcards
Lowest concentration of antimicrobial drug capable of inhibiting growth of an organism
Minimum inhibitory concentration
Beta lactam antibiotics bind to penicillin binding proteins in the cytoplasmic membrane and inhibits what type of reaction?
Transpeptidation reaction
Cross linking
What bacteria induces penicillin resistance by enzymatic hydrolysis of beta lactam ring by formation of beta lactamases?
Staph aureus
What bacteria induces penicillin resistance by structural change in the target PBP?
MRSA
Pneumococci
Enterococci
What bacteria induces penicillin resistance by changing porin structures in the outer cell wall?
Pseudomonas aeruginosa
Ampicillin may be used in infections due to
HELPS Me
H influenzae E coli, enterococci Listeria Proteus Salmonella Moraxella
What type of penicillin is resistant to inactivation by beta lactamases?
Isoxazolyl penicillin
Anti -staphylococcal
Ampicillin has synergystic effect when given with
Aminoglycosides
Antipseudomonal penicillins
Takes Care of Pseudomonas
Ticarcillin
Carbenicillin
Piperacillin
Beta lactamase resistant antibiotics
Isoxazolyl penicillin
4th gen cephalosporins
Monobactams
Covered by first generation cephalosporins
PEcKs first
Proteus
E coli
Klebsiella
2nd generation cephalosporins have added coverage for infections due to
HEN
Haemophilus
Enterobacter
Neisseria
Cephalosporin that can cause disulfiram reaction
2nd- cefotetan, cefamandole
3rd- cefoperazone
Inhibits renal metabolism of imipinem by dihydropeptidase
Cilastin
Monobactam that has no activity against gram positive bacteria
Resistant to beta lactamase
Aztreonam
Suicide inhibitors
Clavulanic acid
Sulbactam
Tazobactam
Drugs of Last resort
I AM your Last Shot at Victory Imipinem Amikacin Meropenem Linezolid Streptogramins Vanco
Inhibits cell wall synthesis by binding to D-ala D- ala terminus of nascent peptidoglycan
Vancomycin
Can cause red man syndrome
Vancomycin
Used for pseudomembranous colitis
Vancomycin
Used for uncomplicated UTI, safe for pregnant patients
Inactivates UDP N acetylglucosamine 3 enol pyruvyltransferase
Fosfomycin
Bacteriostatic drug that inhibits transpeptidation at 50s subunit
For meningitis
Can cause aplastic anemia
Gray baby syndrome
Chloramphenicol
Most potent tetracycline
Minocycline
Tetracycline that has broadest spectrum and least resistance
Tigecycline
Antibiotic for Mycoplasma Chlamydia Rickettsia Vibrio
Tetracyclines
Bacteriostatic, binds to 50s subunit
Hepatotoxic
Can be used for CAP, diphtheria, chlamydia
Macrolides
All macrolides inhibit CYP450 except
Azithromycin
Macrolide used for macrolide resistance
Telithromycin
Antibiotic for anaerobic infections above the diaphragm
Clindamycin
Antibiotic for anaerobic infections below the diaphragm
Metronidazole
Narrowest therapeutic window among aminoglycosides
Amikacin
Most vestibulotoxic and nephrotoxic aminoglycosides
Tobramycin
Gentamycin
Aminoglycoside used for bowel prep, hepatic enceph, skin infections
Neomycin(topical)
Kanamycin
Paromomycin
Most ototoxic aminoglycoside
Kamamycin
Aminoglycoside for drug resistant gonorrhea
Spectinomycin
Sulfonamide that inhibits dihydropteroate synthase and used for burn infection
Silver sulfadiazine
Co-trimoxazole inhibits these enzymes
Dihydropteroate synthase
Dihydrofolate reductase
This class of antibiotics may damage growing cartilage and cause arthropathy in people <18 years old
Quinolones
Fluoroquinolone used for UTI, GIT infections, atypical pneumonia
Can cause tendonitis and tendon rupture
Ciprofloxacin
Widest spectrum of activity among fluoroquinolones
4th gen
Trovafloxacin
Alatrofloxacin
Prevent neurotoxicity of Isoniazid by administering with
Pyridoxine
Most hepatotoxic anti TB drug
Pyrazinamide
Sterilizing anti TB drug
Pyrazinamide
Anti TB drug that can cause hyperuricemia
Pyrazinamide
Ethambutol can cause this type of color blindness
Red green color
Antimycobacterial that inhibits folic acid synthesis
Dapsone
Most active drug against M.leprae
Dapsone
Drug for leprosy that can cause red orange skin
Clofazimine
Antifungal that binds to ergosterol in fungal cell membrane, forming artificial pores
For systemic fungal infections
Nephrotoxic
Amphotericin B
Antifungal that inhibits thymidilate synthase
Used for cryptococcosis, systemic candidal infections
Has selective toxicity
Synergistic with amphotericin
Flucytosine
Antifungal that blocks ergosterol synthesis
For chronic mucocutaneous candidiasis, dermatophytosis
Can cause gynecomastia, limited to topical use
Ketoconazole
Azole antifungal that has good CNS penetrability
Fluconazole
Azole antifungal that is used for blastomycosis, sporothricosis, dermatophytosis
More selective for fungal cells than ketoconazole
Itraconazole
Echinocandin antifungal that inhibits beta glucan synthase
Used for disseminated and mucocutaneous candidaliasis
Salvage therapy for invasive aspergillosis
Caspofungin
Systemic antifungal for dermatophytosis
Accumulates in keratin
Contraindicated in porphyria
Griseofulvin
Squalene oxidase inhibitor antifungal for dermatophytosis and onychomycosis
Accumulates in keratin
Terbinafine
Polyene topical antifungal for candidiasis
Swish and swallow preparation
Nystatin
Azole topical antifungal for mucocutaneous candidiasis
Seborrheic dermatitis
Pityriasis versicolor
Clotrimazole
Anti viral used for herpes
Acyclovir
Acyclovir works if activated by the viral _______ ________
Thymidine kinase
Antiviral for CMV
Ganciclovir
Antiviral that is active against HSV strains with absent thymidine kinase activity
Cifodovir
Foscarnet
NRTI used to prevent maternal-fetal HIV transmission
Zidovudine Lamivudine Abacavir Didanosine Emtricitabine Tenofovir
Non nucleoside reverse transcriptase inhibitors
DENR
Delavirdine
Efavirenz
Nevirapin
Protease inhibitor that inhibits viral protein processing
Can cause hyperlipidemia
Fat redistribution
Acanthosis nigricans
Hyperglycemia
Indinavir and family of -navir
Antiviral for influenza A
Virtually obsolete
Also used for Parkinsonism
Amantadine
Oseltamivir inhibits this enzyme
Neuraminidase
Hepa B antiviral that inhibits HBV DNA polymerase
Lamivudine
Coinfection of HBV and HIV may increase the risk of this disease with lamivudine use
Pancreatitis
Antimalarial used for chemoprophylaxis
Mefloquine
Anti malarial that eradicates hypnozoites in the liver preventing relapse
Primaquine
Antimalarial that can cause cinchonim
Quinine
Antimalarial for chloroquine resistance and severe falciparum malaria
Cardiotoxicity
Halofantrine
Lumefantrine
DOC in Philippines for uncomplicated falciparum malaria
Co-Artem
Drug of choice for asymptomatic cyst carrier for E. histolytica
Diloxanide Furoate
Backup drug for severe intestinal and extraintestinal amebiasis
Emetine
Drug of choice for cryptosporidiosis
Nitazoxanide
Drug of choice for toxoplasmosis
Pyrimethamine-Sulfadiazine
Drug of choice for African sleeping sickness
Melarsoprol
Drug of choice for advanced West African sleeping sickness
Eflornithine
Drug of choice for Chagas disease
Nifurtimox
Nifurtimox inhibits this enzyme
Trypanothione reductase
Drug of choice for Leishmaniasis
Sodium stibogluconate
Meglumine antimonate
Amphotericin
Miltefosine
Antihelmintic that inhibits microtubule assembly
Larvicidal and ovicidal
Drug of choice for ascariasis
Albendazole
Ovicidal antihelminthic
Drug of choice for trichuris trichiura (whipworm)
Mebendazole
Ovicidal antihelmintic
Drug of choice for trichinosis
Thiabendazole
Drug of choice for filiariasis
Diethlycarbamazine
Antihelminthic thay intensifies GABA mediated neurotransmission in nematodes
Drug of choice for strongyloides
Ivermectin
Can cause Mazzotii reaction
DEC
Ivermectin
Drug of choice for pinworm and hookworm
Stimulates nicotinic receptors at NMJ of nematodes
Pyrantel pamoate
Antihelminthic that increases membrane permeability to calcium that causes paralysis
Drug of choice for trematodes and cestodes
Praziquantel