antagonist

(noun)

A chemical that binds to a receptor but does not produce a physiological response, thereby blocking the action of agonist chemicals.

Related Terms

Examples of antagonist in the following topics:

  • Hallucinogens

    • Primary dissociatives are NMDA antagonists, which block glutamate from entering its receptors and regulating brain function.

  • The Five-Factor Model

    • This trait measures one's tendency to be compassionate and cooperative rather than suspicious and antagonistic towards others.

  • Other Obsessive-Compulsive Disorders

    • There are several different classes of pharmacological treatment agents that have some support for treating excoriation disorder: (1) SSRIs; (2) opioid antagonists; and (3) glutamatergic agents.