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Fluoroquinolones & antimycobacterials
Ch. 33, 34
25
Pharmacology
Graduate
11/21/2012

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Term
Fluoroquinolones
Definition
synthetic, wide antibacterial spectrum, favorable pharmacokinetic properties, few AE, but emerging resistance. TX for UTIs
Term
Nalidixic Acid
Definition
1st gen fluoroquinolone
Term
Ciprofloxacin (cipro)
Definition
2nd gen fluoroquinolone- PO/IV. prototype
Term
Enoxacin (penterex)
Definition
2nd gen fluoroquinolone
Term
Lomefloxacin (maxaquin)
Definition
2nd gen fluoroquinolone
Term
Ofloxacin (floxin)
Definition
2nd gen fluoroquinolone
Term
Gatifloxacin (tequin)
Definition
3rd gen fluoroquinolone
Term
Levofloxacin (levaquin)
Definition
3rd gen fluoroquinolone
Term
Moxifloxacin (avalox)
Definition
4th gen fluoroquinolone
Term
Trovafloxacin (trovan)
Definition
4th gen fluoroquinolone- fatal hepatotoxicity- withdrawn from US market.
Term
Diarrhea, Nausea, HA, dizziness, light-headed, crystalluria, rash, articular cartilage erosion. CI- preggo, lactation, renal damage.
Definition
AE fluoroquinolones
Term
UTI, prostatitis; resp tract infection; STD (gonorrhea, not syphilis); GI infections; bone, joint, & soft tissue infections; multidrug resistant TB & atypical mycobacterial infections
Definition
Therapeutic uses fluoroquinolones
Term
Methenamine
Definition
Urinary tract antiseptic- breaks down formaldehyde which kills the bugs. TX chronic cystitis
Term
Nitrofurantoin (macrobid)
Definition
Urinary tract antiseptic- less common, narrow spectrum, toxic. Bacteriostatic. turns urine brown.
Term
GI disturbances, acute pneumonitis, hemolytic anemia, agranulocytosis, hepatotoxic, pancreatitis
Definition
AE Nitrofurantoin
Term
Isoniazid (INH)
Definition
Antimcobacterial- TX against Tb. bactericidal against extracellular and intracellular growing bacilli. interferes with biosynthesis of cell wall mycolic acids
Term
Peripheral neuritis, hepatotoxicity, potential for seizures, inhibit metabolism phenytoin, hypersensitivity- rash, fever
Definition
AE INH
Term
Rifampin
Definition
antimycobacterial- bactericidal against extracellular cavitary bacili & organisms in closed lesions. inhibits bacteral DNA-dependent RNA polymerase
Term
hypersensitivity, epigastric distress, NVD, cramps, fever; hepatotoxicity & jaundice, turns saliva, tears, urin, sweat orange/red color. Drug interactions- induces CYP450
Definition
AE rifampin
Term
Pyrazinamide
Definition
antimycobacterial- bacteriocidal. absorbed orally, distributed throughout body & CSF. excreted by kidney.
Term
Hepatotoxic, hyperuricemic, ocassional GI
Definition
AE Pyrazinamide
Term
Ethambutol
Definition
antimycobacterial- bacteriostatic. used in combination. oral, distributed through & CSF. kidney excretion
Term
Optic neuritis, urate retention & gouty attacks
Definition
AE ethambutol
Term
Streptomycin
Definition
antimycobacteral- bacteriocidal to extracellular TB. problem with resistance, use in combo.
Term
Dapsone
Definition
Leprosy- sulfonamide related PABA antagonist. bacteriostatic.
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