As offensive coordinator, Arians was part of Steeler teams that won three AFC North Division titles, two AFC Championships and Super Bowl XLIII. In 2009, the Steelers' offense became the first in team history to have a 4,000-yard passer, two 1,000-yard receivers and a 1,000-yard rusher in the same season.
From Wikipedia, the free encyclopedia. A dopamine antagonist is a drug which blocks dopamine receptors by receptor antagonism. There are five known types of dopamine receptors in the human body; they are found in the brain, peripheral nervous system, blood vessels, gastrointestinal tract and the kidney.rom Wikipedia, the free encyclopedia. A dopamine antagonist is a drug which blocks dopamine receptors by receptor antagonism. There are five known types of dopamine receptors in the human body; they are found in the brain, peripheral nervous system, blood vessels, gastrointestinal tract and the kidney.
Dopamine is a neurotransmitter, a chemical used to carry messages between neurons. Dopamine is produced in several areas of the brain, including the substantia nigra. Dopamine's effects are complex and poorly understood, but dopamine appears to play a role in signaling reward in the brain.arkinson's disease destroys dopamine-producing neurons in the substantia nigra, and causes motor symptoms (dyskinesia, tremor, rigidity) as well as cognitive symptoms. The motor symptoms can be treated by drugs that increase brain dopamine levels.