Distinguish between the four main types of drug antagonists. Provide an example of an irreversible antagonist....

Distinguish between the four main types of drug antagonists. Provide an example of an irreversible antagonist. Please answer this question in one paragraph with more detail

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Expert Solution

Types of antagonists

1)Chemical antagonist

2)physiological antagonist

3)pharmacological antagonist

4)Allosteric antagonist

*chemical antagonist -it is a type of antagonist that binds to a drug or ligand and renders it ineffective. A chemical antagonist does so by causing certain chemical changes in the ligands it binds. The antagonist binds to the agonist and forms an inactive complex that cannot perform any function.

*physiological antagonist -it is a type of antagonist that binds to a separate receptor and counters the effect of antagonist. Two drugs should be physiologically antagonist of one another if they bind to two different receptors and produce to opposite effects.

*pharmacological antagonist -they binds to the same receptor as the agonist does. It occupies the binding site of the receptor and prevents yhe binding of agonir to the receptor.

*Allosteric antagonist - it is a type of antgonist that binds to the receptor but on a different site as compared to the binding site of real antagonist. Binding of allosteric antagonist induces changes in receptor.

2)Phenoxybenzamine is an irreversible antagonist of alpha receptor.

gladiator answered 1 year ago

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