antimicrobials, antifungals, antivirals, cancer, immunoregulatory Flashcards
Penicillin
antimicrobial - beta lactam
cephalosporin
antimicrobial - beta lactam
carbapenem
antimicrobial - beta lactam - imipenem/cilastatin
monobactam
antimicrobial - aztreonam only one - beta lactam
glycopeptide
antimicrobial - vancomycin, bacitracin - for topical use for gram-positive and certain gram-negative bacteria.
tetracycline
antimicrobial - • Drug of choice • Rickettsial diseases: Rocky Mountain spotted fever, typhus • Mycoplasma pneumoniae
• Chlamydia pneumoniae
• Lyme disease (Borrelia burgdorferi) • Brucellosis
• Alternative agent • Plague
• Pelvic inflammatory disease
• As treatment of syndromes • Acne: low-dose oral or topical
macrolide
antimicrobial - erythromycin
Drug of choice Mycoplasma pneumonia,
Streptococcal (group A streptococcus (GAS)) upper respiratory tract
infection (penicillin-allergic patient), Legionella infection
Alternative agent
• Lyme disease
• Chlamydia infection
As treatment of syndromes
• Bacterial bronchitis
• Otitis media (middle ear infection) with sulfonamide • Acne, topical
Prophylaxis
• Large bowel surgery • Oral surgery
and ketolides
aminoglycosides
antimicrobial. ineffective against anaerobic bacteria and fungi
chloramphenicol
antimicrobial - aplastic anemia!!!!!!
sulfonamides
antimicrobial - sulfamethoxazole gastrointestinal disturbances (nausea, vomiting, anorexia) and allergic skin reactions (such as rash and urticaria).
trimethoprim
antimicrobial - gastrointestinal disturbances (nausea, vomiting, anorexia) and allergic skin reactions (such as rash and urticaria).
• Fluoroquinolones
antimicrobials - • The earlier generation agents are, in general, more narrow spectrum than the later ones.
nitrofurans
antimicrobials - • Not to be used in patients with a creatinine clearance of 60 ml/min or less
urinary tract infection
colistin (polymixin E), polymixin B
antimicrobials • Their use was abandoned, except in patients with cystic fibrosis, because of toxicity (they react with and affect the membranes of human cells, resulting in kidney damage and neurotoxicity).
• Because they are not well absorbed from the gastrointestinal tract, oral administration is occasionally used for the treatment of diarrhea.
rifampin
antimicrobials - anti-tuberculosis
isonazid
antimicrobials - anti-tuberculosis
pyrazinamide
antimicrobials - anti-tuberculosis
• rifampin, dapsone, clofazimine
antimicrobials - anti-leprosy
- Is presumed that rifampin acts by inhibition of Mycobacterium leprae DNA-dependent RNA polymerase.
- Similar to sulfonamides, dapsone (diamino-diphenyl sulphone) acts as an inhibitor of dihydropteroate synthetase in folate synthesis to produce a bacteriostatic effect.
flucytosine
antifungals - nucelic acid synthesis
caspofungin
antifungals - cell wall
o blocks the synthesis of a major fungal cell wall component, 1-3-beta-D-glucan.
griseofulvin
antifungals - nuclear division - o inhibits fungal mitosis through interaction with polymerized microtubules
amphotericin B
antifungals - cell membrane - o Polyenes act by binding to sterols in the cell membrane and forming channels, allowing K+ and Mg2+ to leak out.
o Fungi that not have ergosterol are not susceptible to amphotericin B.
o The initial reactions, usually fever to as high as 40° C, chills, headache, general discomfort, nausea, and occasionally hypotension.
o Anemia with hematocrits of 22% to 35% develops in most patients who receive a normal course of therapy. This is the result of reduced erythropoiesis due to inhibition of erythropoietin production.
nystatyn
antifungals - ergosterol component
fluconazole
antifungals - CYTOCHROME P450!!!!!
itraconazole
antifungals - CYTOCHROME P450
terbinafine
o Terbinafine inhibits ergosterol biosynthesis via inhibition of squalene epoxidase
antimetabolites (S phase)
cancer - cell cycle - growth fraction malignancies (high replicating cells), such as hematologic cancers.
taxanes
cancer - cell cycle - growth fraction malignancies (high replicating cells), such as hematologic cancers.
vinca alkaloids (M phase)
cancer - cell cycle - growth fraction malignancies (high replicating cells), such as hematologic cancers.
antitumor antibiotics (G2-M phase)
cancer - cell cycle - growth fraction malignancies (high replicating cells), such as hematologic cancers.
alkylating agents
cancer - Cell-cycle nonspecific (CCNS) drugs (useful against tumors that have a low percentage of replicating cells, also effective against replicating cells).
anthracyclines
cancer - Cell-cycle nonspecific (CCNS) drugs (useful against tumors that have a low percentage of replicating cells, also effective against replicating cells).
antitumor antibiotics
cancer - Cell-cycle nonspecific (CCNS) drugs (useful against tumors that have a low percentage of replicating cells, also effective against replicating cells).
platinum analogs
cancer - Cell-cycle nonspecific (CCNS) drugs (useful against tumors that have a low percentage of replicating cells, also effective against replicating cells).
antimetabolites (methotrexate, • 6-MP and 6-TG , • 5-FU (5-Fluorouracil) and Cytarabine )
cancer - antineoplastic drugs - antimetabolites
o Low dose of MTX is anti-inflammatory and immuno-suppressive.
antibiotics (• Doxorubicin and daunorubicin)
cancer - antineoplastic drugs
o Used in drug combinations, doxorubicin is one of the most important and widely used anticancer drugs.
o Cardiotoxicity or heart failure.
antibiotics (dactinomycin)
cancer - atineoplastic o This drug is also immunosuppressive.
antibiotics (bleomycin)
cancer - antineoplastic
pulmonary toxicity
topoisomerase inhibitors
cancer - antineoplastic - Topoisomerase inhibitors (Epipodophyllotoxins) (inhibit topoisomerase II- mediated religation of DNA breaks): Etoposide (VP-16), teniposide (VM-26).
• Etoposide (VP-16) is phase-specific (active in G2).
alkylating agents (mechlorethamine)
cancer - antineoplastic - • They are mutagenic and carcinogenic and can lead to a second malignancy, such as acute leukemia.
• Mechlorethamine
o It causes lymphocytopenia.
o It alkylates the N-7nitrogenof a guanine residue in one or both strands of a DNA molecule, leading to cross- linkage between guanine residues in the DNA chains.
alkylating agents (cyclophosphamide)
cancer - antineoplastic - o It is the most commonly used alkylating agent.
alkylating agents (temozolomide)
cancer - antineoplastic - can also cross blood-brain barrier