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agonist |
Also found in: Medical, Wikipedia, Hutchinson | 0.02 sec. |
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agonist [′ag·ə‚nist] (biochemistry) A chemical substance that can combine with a cell receptor and cause a reaction or create an active site. (physiology) A contracting muscle that is resisted or counteracted by another muscle, called an antagonist, with which it is paired. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| TRK-820 is a selective kappa opioid receptor agonist and is expected to be effective with its novel mechanism in treating itching which is resistant to conventional drugs such as antihistamines. Both are opioids; however, their mechanism of action differs in that morphine acts as a [micro] receptor agonist and butorphanol primarily as a [kappa] agonist. a selective serotonin receptor agonist used as the succinate salt in the acute treatment of migraine and cluster headaches. |
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