The ability of a drug or a muscle to oppose or resist the action or effect of another drug or muscle
; opposite of synergistic action.
What does it mean for a drug to be an antagonist?
Antagonist:
A substance that acts against and blocks an action
. Antagonist is the opposite of agonist. Antagonists and agonists are key players in the chemistry of the human body and in pharmacology.
What is an example of antagonistic effect?
Antagonistic effects are the basis of many antidotes for poisonings or for medical treatments. For example,
ethyl alcohol (ethanol)
can antagonize the toxic effects of methyl alcohol (methanol) by displacing it from the enzyme that oxidizes the methanol.
What is a antagonistic drug effect?
An interaction between two or more drugs that have opposite effects on the body
. Drug antagonism may block or reduce the effectiveness of one or more of the drugs.
What does antagonistic mean in biology?
Antagonism, in ecology,
an association between organisms in which one benefits at the expense of the other
. … Although antagonism is commonly thought of as an association between different species, it may also occur between members of the same species through competition and cannibalism.
What are examples of antagonistic hormones?
Antagonistic hormones are a pair of hormones that have the opposite effects. For example,
insulin and glucagon
are antagonistic hormones because insulin functions to decrease blood glucose levels, whereas glucagon functions to increase blood glucose levels.
What is an example of additive effect?
Additive interaction means the effect of two chemicals is equal to the sum of the effect of the two chemicals taken separately. This is usually due to the two chemicals acting on the body via same or similar mechanism. Examples are
aspirin and motrin, alcohol and depressant, tranquilizer and painkiller
.
How do you tell if a drug is an agonist or antagonist?
An agonist is
a drug that binds to the receptor, producing a similar response to the intended chemical and receptor
. Whereas an antagonist is a drug that binds to the receptor either on the primary site, or on another site, which all together stops the receptor from producing a response.
What are examples of antagonist drugs?
An antagonist is a drug that blocks opioids by attaching to the opioid receptors without activating them. Antagonists cause no opioid effect and block full agonist opioids. Examples are
naltrexone and naloxone
.
What are the types of antagonists?
There are different types of villains within the category:
the mastermind, the anti-villain, the evil villain, the minion or henchman
, and the supervillain, to name a few.
Which is the most common type of drug interaction?
pharmacokinetic
– defined as an alteration in the absorption, distribution, metabolism or excretion of one drug by another. This is the most common type of drug interaction. pharmacodynamic – where the drug affects the action or effect of the other drug.
Is alcohol an antagonist?
Ethanol is an
antagonist of the N
-methyl-D-aspartate (NMDA) glutamate receptor.
How do you use antagonistic?
- The “fable” appears to be antagonistic to ideas of monarchy. …
- They have to deal with two, often antagonistic , people. …
- So, in Christianity, the existence of Satan as an evil influence, antagonistic to God, involves a kind of dualism.
What are the synonyms for antagonist?
- adversary.
- enemy.
- foe.
- bandit.
- competitor.
- contender.
- opposer.
- rival.
What is antagonist in simple words?
1 :
one that contends with or opposes
another : adversary, opponent political antagonists. 2 : an agent of physiological antagonism: such as. a : a muscle that contracts with and limits the action of an agonist with which it is paired. — called also antagonistic muscle.
What is permissive action of hormones?
Permissiveness is
the situation in which a hormone cannot exert its full effects without the presence of another hormone
. Synergism occurs when two or more hormones produce the same effects in a target cell and their results are amplified.
