| nAcChoR | nicotinic acetylcholine receptor |
|---|---|
| NA | Nicotinic acid |
| niacin | Nicotinic acid |
| NAADP | Nicotinic acid adenine dinucleotide phosphate |
| nicotinic acid maculopathy | Maculopathy observed in persons taking 3000 mg or more of nicotinic acid daily; normal vision returns after this medication is discontinued. (05 Mar 2000) |
|---|---|
| nicotinic acids | 2-, 3-, or 4-pyridinecarboxylic acids. Pyridine derivatives substituted with a carboxy group at the 2-, 3-, or 4-position. The 3-carboxy derivative (niacin) is active as a vitamin. (12 Dec 1998) |
| nicotinic alcohol | <chemical> 3-pyridinemethanol. A direct-acting peripheral vasodilator that causes flushing and may decrease blood pressure. It is used in vasospasm and threatened gangrene. Pharmacological action: vasodilator agents. Chemical name: 3-Pyridinemethanol (12 Dec 1998) |
| nicotinic antagonists | Drugs that bind to nicotinic cholinergic receptors (receptors, nicotinic) and block the actions of acetylcholine or cholinergic agonists. Nicotinic antagonists block synaptic transmission at autonomic ganglia, the skeletal neuromuscular junction, and at central nervous system nicotinic synapses. (12 Dec 1998) |
| nicotinic cholinergic receptor | A class of receptors responsive to acetylcholine that also are activated by nicotine; ganglionic (including the adrenal medulla) and neuromuscular receptors. Two classes exist: nicotinic-neuronal and nicotinic-muscular. (05 Mar 2000) |
| nicotinic receptors | A class of cholinergic receptors on skeletal muscle cells that are linked to ion channels in the cell membrane. (05 Mar 2000) |