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Exam 4 Antimicrobial Agents
Lecture 25
77
Biology
Undergraduate 3
03/15/2015

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Term
Antibiotic
Definition
Substance produced by MO which kills or inhibits other MO
Term
Antimicrobial agent
Definition
Substance which kills or inhibits MO
Term
What are the 3 types of Antimicrobial agents?
Definition
Natural
Semisynthetic
Synthetic
Term
Bactericidal
Definition
Agents that kill bacteria
Term
Bacteriostatic
Definition
Agents that inhibit bacteria
Term
Spectrum of Activity
Definition
The range of MOs adversely affected by drug
Term
Mechanism of Action
Definition
How the drug harms MOs
Term
Plasmid
Definition
Extra-chromosomal DNA
Term
Transposons
Definition
Mobile DNA segments
Term
Synergy
Definition
Two drugs are greater than the sum
Term
Additive
Definition
Sum of the activity of the individual antimicrobials
Term
Indifferent
Definition
Drugs work independently from each other
Term
Antagonism
Definition
Interference between drugs
Term
Intrinsic resistance
Definition
Inherent; an integral characteristic of MO
Term
Acquired Resistance
Definition
Change in bacterial strain’s susceptibility to drug
Term
What are the following considered:
Inactivation by enzymes
Permeability barriers
Drug efflux
Low affinity target sites
Bypass mechanisms
Cross Resistance
Definition
Bacterial Resistance Mechanisms
Term
Constitutive
Definition
R constantly expressed
Term
Inducible
Definition
R expressed when MO exposed to drug
Term
Homogeneous
Definition
R expressed by entire population
Term
Heterogeneous
Definition
Some MOs express R within population
Term
β-lactams bind to the ________ in the cell wall of the bacteria, weakening the cell wall structure. This eventually leads to cell lysis.
Definition
Penicillin Binding Proteins (PBP)
Term
True or False:
Some MOs produce enzymes called beta-lactamases
Definition
True
Term
What do beta-lactamases do?
Definition
Cleave the Beta-lactam ring
Term
What are 3 examples of Beta-lactamases
Definition
Penicillinase
Cephalosporinase
Extended Spectrum Beta Lactamase (ESBL)
Term
Permeability barrier
Definition
Porins transport some β-lactams into gram negative MOs
Term
What are 2 examples of Low affinity PBPs
Definition
Penicillin-resistant pneumococci
Methicillin-resistant staphylococci (MRSA)
Term
Are Low Affinity PBPs intrinisic or acquired?
Definition
Both
Term
Name the 4 types of Penicillins
Definition
Natural penicillins
Penicillinase-resistant penicillins
Extended-spectrum penicillins
Beta-lactam & Beta-lactamase inhibitor combo
Term
What are the following considered:
Penicillin G
Penicillin V
Definition
Natural Penicillins
Term
What are the following considered:
Methicillin
Oxacillin
Nafcillin
Definition
Penicillinase-resistant penicillins (PRPs)
Term
What are the following considered:
Ampicillin
Amoxicillin
Definition
Extended-Spectrum Penicillins
-Aminopenicillins
Term
What are the following considered:
Carbenicillin
Ticarcillin
Definition
Extended-Spectrum Penicillins
-Carboxypenicillins
Term
What are the following considered:
Azlocillin
Mezlocillin
Definition
Extended-Spectrum Penicillins
-Ureidopenicillins
Term
Name the 3 categories of Extended-Spectrum Penicillins
Definition
Aminopenicillins
Carboxypenicillins
Ureidopenicillins
Term
What are the following examples of:
Ampicillin & Sulbactam
Definition
Beta-lactam & Beta-lactamase inhibitor combo
Term
What are the following examples of:
Ticarcillin & clavulanate
Definition
Beta-lactam & Beta-lactamase inhibitor combo
Term
What are the following considered:
Cephalothin
Cefazolin
Definition
Narrow Spectrum Cephems
Term
What are the following considered:
Cefamandole
Cefaclor
Cefoxitin
Definition
Extended Spectrum Cephems
Term
What are the following considered:
Ceftizoxime
Cefoperozone
Ceftriaxone
Cefotaxime
Definition
Broad Spectrum Cephems
Term
What are the following considered:
Cefepime
Definition
Extended Spectrum 4th Generation Agent Cephems
Term
What are the following considered:
Carbapenems (e.g., imipenem)
Monobactam: Aztreonam
Definition
Other Beta-Lactams
Term
What are the 5 types of Cephems
Definition
Narrow-Spectrum
Broad-Spectrum
Extended Spectrum
Extended Spectrum 4th Generation Agent
Extended Spectrum 5th Generation Agent
Term
What are the following considered:
Ceftaroline
Ceftobiprole
Definition
Extended Spectrum 5th Generation Agent
Term
Name the 5 Types of Protein Synthesis Inhibitors
Definition
Aminoglycosides
Macrolides
Clindamycin
Tetracyclines
Chloramphenicol
Term
What are the following examples of:
Gentamicin
Tobramycin
Amikacin
Streptomycin
Definition
Aminoglycosides
Term
What are the following examples of:
Erythromycin
Azithromycin
Definition
Macrolides
Term
What are the adverse effects of Aminoglycosides?
Definition
Nephrotoxic
Ototoxic
Term
What is the adverse effect of Tetracyclines?
Definition
Discolored teeth in children <8 years
Term
What are the adverse effects of Chloramphenicol?
Definition
BM suppression, Aplastic anemia, Gray Baby Syndrome
Term
Name 8 categories of Other Antibacterial Agents
Definition
Vancomycin
Quinolones
Sulfonamides & Trimethoprim
Rifampin
Metronidazole
Nitrofurantoin
Bacitracin
Polymyxins
Term
What are the following examples of:
Colistin
Polymyxin B
Definition
Polymyxins
Term
What is the adverse effect of Rifampin?
Definition
Red-orange body fluids
Term
What are the following examples of:
Sulfisoxazole
Sulfamethoxazole
Definition
Sulfonamides
Term
What are the 4 types of Beta-Lactam Drugs
Definition
Penicillin
Cephalosporins
Carbapenems
Monobactams
Term
What are the 6 types of Penicillins?
Definition
Natural
PRPs
Aminopenicillins
Carboxypenicillins
Ureidopenicillins
Beta-Lactam + Beta Lactamase Inhibitors
Term
What are the 3 types of Beta-Lactam + Beta Lactamase Inhibitors
Definition
Ampicillin/Sulbactam
Amoxicillin/Clavulanate
Piperacillin/Tazobactam
Ticarcillin/Clavulanate
Term
What are the 5 types of Cephalosporins
Definition
Narrow spectrum (1st)
Extended spectrum (2nd)
Broad spectrum (3rd)
Broader spectrum (4th)
5th Generation
Term
What are 4 types of Carbapenems
Definition
Imipenem
Meropenem
Ertapenem
Doripenem
Term
What is a type of Monobactams
Definition
Aztreonam
Term
What are 5 types of Protein Synthesis Inhibitors?
Definition
Aminoglycosides
Macrolides
Clindamycin
Tetracycline
Chloramphenicol
Term
What are 4 types of Aminoglycosides
Definition
Gentamycin
Tobramycin
Amikcain
Streptomycin
Term
What are 2 types of Macrolides
Definition
Eerythromycin
Azithromycin
Term
What are 4 types of Other Antibiotics part A?
Definition
Glycopeptides
Quinolones
Sulfamides
Rifampin
Term
What does Rifampin inhibit?
Definition
RNA Synthesis
Term
What does Sulfamides inhibit?
Definition
Folic acid synthesis
Term
What does Quinolones inhibit?
Definition
DNA Synthesis
Term
What do Glycopeptides inhibit?
Definition
Cell Wall Synthesis
Term
What is an example of Glycopeptides?
Definition
Vancomycin
Term
What is an example of a Narrow Spectrum Quinolone?
Definition
Nalidixic acid
Term
What is an example of a Broader Spectrum Fluoroquinolone
Definition
Ciprofloxacin
Term
What are 4 types of Other Antibiotics part B?
Definition
Metronidazole
Nirtofurantoin
Bacitracin
Polymixins
Term
What does Metronidazole disrupt?
Definition
DNA Synthesis
Term
What is Metronidazole effective against?
Definition
Anaerobes
Term
What does Nirtofurantoin damage?
Definition
DNA & Enzymes
Term
What does Bacitracin disrupt?
Definition
Cytoplasmic Membrane
Term
What does Polymixins distrupt?
Definition
Cytoplasmic Membrane
Term
What are 2 examples of Polymixins?
Definition
Colistin
Polymixin B
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