| In muscle cells, nicotinic receptors present at the neuromuscular junction mediate rapid excitation that leads to muscle contraction. |
| If indicated, nicotinic acid and fibric acid derivatives are the most efficacious in lowering triglyceride levels. |
| Roasting also destroys most of the trigonelline, converting it into nicotinic acid, nicotinamide, and a score of volatile aromatics. |
| Specifically, nicotine acts at the nicotinic receptor class for the transmitter acetylcholine. |
| Most nicotinic acid and half the folate in foods are not absorbable. |
| Thus, the enzymes nicotinic acid mononucleotide adenylyltransferase and NAD synthetase are essential for growth of E. coli. |
