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Cell Wall Inhibitors
Concepts
32
Other
Not Applicable
12/10/2012

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Term
Digested cell wall
Definition
spheroplast --> protoplast
Term
Separates dividing daughter cells, anchor flagella, some components contribute to virulence
Definition
Bacterial cell wall
Term
made up of cytoplasmic membrane and peptidoglycan
Definition
gram positive cell wall
Term
made of phospholipids and protein
Definition
cytoplasmic membrane
Term
Lipoteichoic Acid, Linear polymers of alternating substances
Definition
Peptidoglycan
Term
Function of peptides
Definition
cross-link the strands of polysaccharides
Term
Has an outer membrane
Definition
gram negative cells
Term
the cells are often already dead from the antibiotic but the LPS can react with your immune system
Definition
gram negative sepsis
Term
Analogs of D-Ala-D-Ala (di-alamine peptide)
Definition
Beta lactam antibiotics
Term
lactam + PBP (-NH2 or -OH)
Definition
inhibit cell wall synthesis of bacteria
Term
lactam + endogenous protein (host)
Definition
hypersensitivity reaction
Term
lactam + aminoglycoside
Definition
neither will remain active
Term
Lactam opens spontaneously
Definition
main mode of resistance
Term
Beta lactams in low pH
Definition
reduced bioavailability
Term
Major mode of evolution of beta-lactam resistance
Definition
PBPs with Beta-lactamase activity only (penicillinases, cephalosporinases, mixed)
Term
competitive, irreversible (suicide) inhibitors
Definition
beta-lactamase inhibitors
Term
Anaphalaxis most serious (0.01%) hypersensitivity reactions
Definition
immediate onset (<30 min)
Term
accelerated reactions (rash, fever)
Definition
< 48 hours
Term
delayed reactions (skin reactions, nephritis, serum sickness)
Definition
> 48 hours
Term
nonurticarial maculopapular rash; not immune-mediated
Definition
ampicillin rash (also amoxicillin)
Term
penicillin
Definition
serendipitous discovery by Fleming
Term
not active orally
Definition
Penicillin G
Term
active orally
Definition
Penicillin V
Term
Precursor of semisynthetic penicillins
Definition
6-aminopenicillic acid
Term
nucleus is 7-aminocephalosporanic acid
Definition
cephalosporins
Term
greater seizure potential, not used in meningitis
Definition
Carbapenems
Term
Sensitivity similar to cefotaxime and ceftazidime
Definition
monobactams
Term
rather large size, therefore cannot get through the gram negative outer cell membrane and can only be used for gram positive
Definition
Vancomycin
Term
systemic effects of Vancomycin
Definition
Ototoxicity and nephrotoxicity
Term
Red man syndrome
Definition
stimulation of histamine release during or within 10 min after IV infusion; pretreat with histamine 1 blocker and infuse slowly
Term
produced by licheniformis B. subtilis
Definition
Bacitracin
Term
Highly nephrotoxic (never used for systemic gram positive infection)
Definition
Bacitracin
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