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

  • LD50
  • glutamate
  • serotonin

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.
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