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• n  the principal character in a work of fiction
• n  someone involved in a contest or battle (as in an agon)
• n  a muscle that contracts while another relaxes
  when bending the elbow the biceps are the agonist
• n  (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction

• Sean-Paul Kelley, who runs The Agonist (at agonist.
• Sean-Paul Kelley, who runs The Agonist (at agonist.
• A Mayo Clinic study found that in rare cases, treatment with a so-called dopamine agonist led 11 patients to develop compulsive-gambling habits (two reported losses over $60,000).

• protagonist

• antagonist

News & Articles

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• Concert Pharmaceuticals Initiates Phase 1 Clinical Trial of CTP-354, a Potential Treatment for Spasticity and Pain
  Concert Pharmaceuticals, Inc. today announced that it has initiated a Phase 1 clinical trial with CTP-354. CTP-354 is a novel GABAA receptor subtype-selective modulator that has demonstrated no sedation at therapeutic doses in preclinical models in contrast to existing GABAA receptor non-selective agonists, such as benzodiazepines.
  June 10, 2013 - Business Wire via Yahoo! Finance
• Fear learning studies point to a potential new treatment for PTSD
  An opioid receptor agonist can reduce PTSD-like symptoms in an animal model. Additional data from humans strengthen the case for opioid receptors' involvement in regulating fear learning.
  June 5, 2013 - EurekAlert!

Quotes

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• Edwin Ernest Salpeter in eMaxHealth.com
  In total, there are about 5,000 deaths a year due to asthma, whether or not a person is taking a long-acting beta-agonist,said Edwin Salpeter, the JG White Distinguished Professor of Physical Sciences Emeritus at Cornell, who led the...