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目的:阐述IL-6与胰岛功能或胰岛病变的可能关系。方法:采用常规消化方法分离人胚胎胰岛并进行原代培养,培养上清进行IL-6、胰岛素、胰高血糖素活性测定和IL-6McAb中和实验,同时对胚胎胰岛进行体外葡萄糖刺激实现。结果:原代培养的胚胎胰岛在40h内IL-6分泌呈上升趋势(37~153mU/胰岛),每24h重新换取新培养液作为一个分泌周期,IL-6分泌以第1周期最高(106mU/胰岛),体外连续培养IL-6的分泌以1d最高(145mU/胰岛),用IL-6McAb可以阻断胰岛培养上清中IL-6的活性;胰岛素、胰高血糖素的分泌周期与IL-6不同;葡萄糖刺激明显促进IL-6的分泌,其分泌趋势与胰岛素分泌一致。结论:原代培养的人胚胎胰岛在无任何刺激情况下可自发分泌IL-6,而且IL-6的分泌有自己的分泌环路。
Objective: To elucidate the possible relationship between IL-6 and pancreatic islet function or islet lesion. Methods: The islets of human embryos were isolated by conventional digestion and cultured in primary culture. The supernatant was cultured for determination of IL-6, insulin, glucagon activity and IL-6McAb neutralization, and in vitro glucose stimulation of embryonic islets. RESULTS: The primary culture of embryonic islets showed an upward trend of IL-6 secretion (37 ~ 153mU / islet) within 40 hours. Fresh medium was replaced every 24 hours as a secretory cycle. IL-6 secretion was the highest in the first cycle (106mU / The secretion of IL-6 in continuous culture in vitro was the highest at 1d (145mU / islet). The IL-6 activity in islet culture supernatant was blocked by IL-6McAb. The secretion of insulin and glucagon was correlated with IL- 6 different; glucose stimulation significantly promote the secretion of IL-6, the secretion of insulin secretion and the same trend. CONCLUSION: Primary cultured human embryonic islets spontaneously secrete IL-6 without any stimulation and IL-6 secretion has its own secretory loop.