首页> 外文期刊>Life sciences >The non-neuronal cholinergic system in peripheral blood cells: effects of nicotinic and muscarinic receptor antagonists on phagocytosis, respiratory burst and migration.
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The non-neuronal cholinergic system in peripheral blood cells: effects of nicotinic and muscarinic receptor antagonists on phagocytosis, respiratory burst and migration.

机译:外周血细胞中的非神经胆碱能系统:烟碱和毒蕈碱受体拮抗剂对吞噬作用,呼吸爆发和迁移的影响。

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Peripheral blood cells express the complete non-neuronal cholinergic system. For example synthesis of acetylcholine and nicotinic as well muscarinic receptors have been demonstrated in leucocytes isolated from human peripheral blood. In the present experiments mononuclear cells and granulocytes were isolated from the peripheral blood to investigate content and synthesis of acetylcholine as well as phenotypic functions like respiratory burst, phagocytosis and migration. Mononuclear cells (T-cells and monocytes) contained 0.36 pmol/10(6) cells acetylcholine, whereas acetylcholine content in granulocytes was 100-fold lower. Acetylcholine synthesis amounted to 23.2+/-4.7 nmol/mg protein/h and 2.90+/-0.84 in CD15+ (granulocytes) and CD3+ cells (T-lymphocytes), respectively. Neither atropine (blockade of muscarinic receptors) nor tubocurarine (blockade of nicotinic receptors) exerted an effect on the respiratory burst. Tubocurarine (30 muM), alone or in combination with atropine (1 microM), reduced phagocytosis in granulocytes by 13% and 19%, respectively (p<0.05). Spontaneous transwell migration of granulocytes was doubled by tubocurarine combined with atropine (p>0.05). Also alpha-bungarotoxin (10 microg/ml) enhanced spontaneous granulocyte migration, but hexamethonium (300 microM) was without effect. The present experiments demonstrate a cholinergic modulation of immune functions in peripheral leucocytes under in vitro conditions, i.e. in the absence of a neuronal innervation. Blockade of nicotine receptors (alpha1 muscular subtype) facilitates spontaneous migration of granulocytes.
机译:外周血细胞表达完整的非神经胆碱能系统。例如,已经在从人外周血分离的白细胞中证明了乙酰胆碱和烟碱样受体以及毒蕈碱受体的合成。在本实验中,从外周血中分离出单核细胞和粒细胞,以研究乙酰胆碱的含量和合成以及诸如呼吸爆发,吞噬作用和迁移的表型功能。单核细胞(T细胞和单核细胞)包含0.36 pmol / 10(6)细胞乙酰胆碱,而粒细胞中的乙酰胆碱含量则低100倍。在CD15 +(粒细胞)和CD3 +细胞(T淋巴细胞)中,乙酰胆碱的合成量分别为23.2 +/- 4.7nmol / mg蛋白/ h和2.90 +/- 0.84。阿托品(阻断毒蕈碱受体)或微管尿素(阻断烟碱样受体)都不会对呼吸爆发产生影响。单独或与阿托品(1 microM)组合使用的Tubocurarine(30μM)可使粒细胞的吞噬作用分别降低13%和19%(p <0.05)。微管蛋白结合阿托品使粒细胞的自发性跨孔迁移增加了一倍(p> 0.05)。同样,α-真菌毒素(10微克/毫升)增强了自发性粒细胞的迁移,但是六甲铵(300微米)没有作用。本实验证明了在体外条件下,即在不存在神经元神经支配的情况下,外周白细胞的免疫功能的胆碱能调节。尼古丁受体(α1肌肉亚型)的阻断促进粒细胞的自发迁移。

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