TOXICOLOGY Flashcards
Study of exogenous clinical compounds that profoundly influence bodily functions, either in a deleterious way or therapeutic benefits
Toxicology
Branch of science which deals with the study of the effect of drugs on biologic systems
Pharmacology
Strength of binding between a drug and its
receptor.
Affinity
The degree to which a drug is able to induce maximal effects.
Efficacy
Two drugs combined — the sum will be greater than their individual effects.
➢ Ex. drugs for severe pain
Synergism
One drug will contra-indicate the other drug
Antagonism
Amount of drug which induces a specified clinical
effects in 50% of subject given the drug
Effective concentration/Dose 50% (EC/ED 50)
Dose that would predict death in 50% of the
population
Lethal Dose (LD 50)
➢ Measure the safety of a drug
➢ LD 50 divided by ED 50
Therapeutic index
Margin between therapeutic and lethal doses of a
drug
Margin of safety
Ability of the drug to cause birth defect
Teratogenecity
ability of the drug to change DNA components
Mutagenecity
The amount (dose) of a chemical which produces
death in 50% of population of test animals to which it is administered by any of a variety of methods
Median Lethal Dose (LD50)
The concentration of a chemical in an environment (air or water) w/c produces death in 50% of an exposed population of test animals in specified time frame
Median lethal concentration (LC50)
Received regular maintenance doses of the drug for about five half-lives of the drug
Steady state concentration
➢ Just before the next drug
➢ Orally
Trough or predose
Analysis, assessment, & evaluation of circulating
concentrations of drugs in serum, plasma or whole blood.
TDM
TDM
cannot be used because it can absorb the toxins leading to false negative result
Gel separator
Used to treat congestive heart failure and cardiac arrhythmias
Cardiotropics