Antibiotics Flashcards
Bacteriocidal
Kill bacterium
Bacteriostatic
inhibit the bacterium from reproducing
What antibiotics inhibit cell wall synthesis?
Cycloserine Vancomycin Bacitracin Penicillins Cephalosporins Monobactams Carbapenems
What antibiotics inhibit DNA gyrase?
Quinolones: Nalidixic acid or Ciprofloxacin
Novobiocin
What antibiotics inhibit Folic acid metabolism?
Trimethroprim
Sulfonamides
What antibiotics inhibit Cytoplasmic membrane structure?
Polymyxins
Daptomycin
What antibiotics inhibit RNA elongation?
Actinomycin
What antibiotics inhibit DNA-directed RNA polymerase?
Rifampin
Streptovaricins
What antibiotics inhibit Protein synthesis (50S inhibitors)?
Erythromycin (macrolides)
Chloramphenicol
Clindamycin
Lincomycin
What antibiotics inhibit Protein synthesis (30S inhibitors)?
Tetracyclines Spectinomycin Streptomycin Gentamicin Kanamycin Amikacin Nitrofurans
What antibiotics inhibit Protein synthesis (tRNA)?
Mupirocin
Puromycin
Penicillins
Bacteriocidal
Gram positive, aerobic bacteria and some anerobes
What do you add to penicillins for a lactamase protector to cover gram positive and some gram negative bacteria including some anaerobes?
Clavulanic acid
What generation of penicillins are for extended spectrum of activity?
New generation penicillins
Cephalosporins (Beta-Lactams)
Bacteriocidal
More resistant to Beta-lactamases
Broad spectrum of acivity
What are the 1st generation Beta-Lactams?
Cephalexin
What are the 2nd generation Beta-Lactams?
Cefotetan
What are the 3rd generation Beta-Lactams?
cefovecin
What are the side effects of Penicillins and Beta-Lactams?
V/D
allergic reactions
Aminoglycosides
Bacteriocidal and bacteriostatic
Gram negative and positive anerobes and some facultative anaerobes
What drugs are Aminoglycosides?
Streptomycin Kanamycin Gentamycin tobramycin amikacin
What are the side effects of Aminoglycosides?
Nephrotoxicity
Ototoxicity
Polymyxins
Most gram negative bacteria (Pasteurella, Escherichia, Shigella, Salmonella, Bordetella, Klebsiella, Pseudomonas)
How do you administer Polymyxins?
Topically
What is the side effect of Polymyxins?
Pemphigus vulgaris (skin immune-mediated disease)
Chloramphenicol
Broad spectrum bacteriostatic
Gram positive
Gram negative
some anaerobes
What are the side effects of Chloramphenicol?
Bone marrow suppression
Tetracyclins
Bacteriostatic
Aerobic and anaerobic gram positive and negative bacteria, mycobacteria, spirochetes, mycoplasma, rickettsiae, chlamydiae and some protozoa
What drugs are Tetracyclins?
Doxycycline
Oxytetracyclin
What are the side effects of Tetracyclins?
Esophagitis hepatotoxicity anaphylaxis (parental administration) Stain the deciduous teeth of juveniles and cause enamel hypoplasia nephrotoxicity (not doxy)
Macrolides and Lincosamides
Gram positive bacteria and Rickettsiae
Bacteriocidal
What drugs are Macrolides and Lincosamides?
Erythromycin Azithromycin tylosin lincomycin/clindamycin Anaerobes and some protozoa
What are the side effects of Macrolides and Lincosamides?
Nausea
pseudomembranous colitis
V/D
What species do you use Tylosin for?
Cattle
Nitroimidazoles
Anaerobic bacteria and protozoa
What drugs are Nitroimidazoles?
Metronidazole
Ronidazole
What are the side effects of Nitroimidazoles?
Neurological abnormalities
Hepatotoxicity
Hematuria
Nitrofurans
Bacteriocidal
Bacteriostatic
Broad spectrum of activity - gram negative bacteria
Used in urinary infections
What are the side effects of Nitrofurans?
Nausea
Vomiting
Sulphonamides
Bacteriostatic
Streptococcus, Bacillus, Corynebacterium, Nocardia, Campylobacter, Pasteurella, Chlamydiae)
When are Sulphonamides ineffective?
in the presence of pus, necrotic tissue or blood containing PABA
PABA
Para-aminobenzoic acid
What are the side effects of Sulphonamides?
Hepatic disease renal disease uroliths keratoconjunctivits sicca immune-complex reactions hypersensitivities
What test should you perform before administering Sulphonamides?
Schirmer tear test
Quinolones
Bacteriocidal
Broad Spectrum of activity especially gram negative and some gram positives
What are the common Quinolones?
Enrofloxacin Marbofloxacin Orbifloxacin prodofloxacin ciprofloxacin norfloxacin
What are the side effects of Quinolones?
CNS: Seizures, retinal blindness in cats, cartilage damage in puppies, increased hepatic enzymes