| 应用 |
内源性H1 和 H2 组胺受体激动剂；H1 激活并使Ca2+移动；H2 激活并刺激神经元中腺苷酸环化酶(adenylate cyclase)活性；激活NO合成酶；血管扩张剂。 |
| 产品介绍 |
有吸湿性。在日光下易变质。组胺由组氨酸脱羧基形成，广泛分布在哺乳动物的组织中，尤其在肥大细胞及有关嗜碱性白细胞内(在变态反应中肥大细胞释放出组胺)。可以组氨酚为原料发酵制得。 |
| 生化机理 |
Histamine, Free Base is a potent vasodilator found in normal tissues and blood. This compound is formed by the decarboxylation of L-histidine and activates NOS (nitric oxide synthase), resulting in the release of nitric oxide. Activation of Histamine H1 Receptors leads to Ca2+ mobilization; whereas, Histamine H2 Receptor activation stimulates adenylate cyclase activity in neurons. Histamine inhibits the synthesis of IL-2 and γ-IFN in peripheral blood mononuclear cells and lipopolysaccharide-induced synthesis of TNF-α in monocytes via H2 receptor activation. |
| 别名 |
β-氨乙基咪唑;1H-咪唑-4-乙胺;2-(4-咪唑基)乙胺;2-(4-Imidazolyl)ethylamine;1H-Imidazole-4-ethanamine; Ergotidine |
