酶联免疫吸附法测定肿瘤性贫血患者的血清细胞因子水平及其发病机制研究
发布时间:2019-04-13 07:39
【摘要】:目的研究肿瘤坏死因子-α(TNF-α)、红细胞生成素(EPO)、干扰素-γ(IFN-γ)对肿瘤性贫血(CRA)的作用机制。方法将恶性肿瘤患者分为试验组(肿瘤伴贫血,76例)和对照组(肿瘤无贫血,21例);再将试验组患者照铁代谢参数分为试验Ⅰ组(29例)和试验Ⅱ组(47例),另选择50例健康志愿者作为正常组。用放射免疫法检测各组血清EPO、铁蛋白(SF)水平,以酶联免疫吸附试验检测血清TNF-α、IFN-γ水平。抽取正常骨髓,常规培养,分别加入不同浓度TNF-α、IFN-γ,对骨髓红细胞集落生成单位(CFU-E)计数;培养体系中再加入不同浓度的重组人促红素(rhEPO),对各浓度时CFU-E进行计数。结果试验Ⅰ组、试验Ⅱ组及对照组的血清TNF-α分别为(137.8±13.2),(241.4±19.8),(113.7±12.6)ng·L~(-1);这3组的EPO分别为(513.7±37.1),(268.8±21.9),(94.6±11.4)ng·L~(-1);这3组的IFN-γ分别为(191.5±16.5),(289.7±20.3),(157.9±14.7)ng·L~(-1)。这3组的这3种指标均显著高于正常组的(51.3±8.4),(56.8±7.1),(57.4±7.8)ng·L~(-1),差异有统计学意义(均P0.05);同时,试验Ⅱ组血清EPO显著高于对照组,但显著低于试验Ⅰ组,差异有统计学意义(P0.05)。体外细胞培养结果显示,TNF-α、IFN-γ均对正常骨髓CFU-E具有抑制作用,与浓度有依赖性且呈正相关;在培养体系中加入rhEPO,能够改善TNF-α、IFN-γ的抑制作用;在2×10~(-10)~32×10~(-10)mol·mL~(-1)内,rhEPO浓度越高,这种改善作用越明显,但依然无法恢复至正常水平。结论在TNF-α、INF-γ等细胞因子作用下,骨髓红系对EPO的反应性不足,这可能是肿瘤性贫血的发病机制之一。
[Abstract]:Aim to study the effects of tumor necrosis factor-伪 (TNF- 伪) and erythropoietin-(EPO), interferon-纬 (IFN- 纬) on (CRA) in patients with tumor anemia. Methods the patients with malignant tumor were divided into two groups: experimental group (76 cases with anemia) and control group (21 cases without anemia). The parameters of iron metabolism were divided into test group 鈪,
本文编号:2457370
[Abstract]:Aim to study the effects of tumor necrosis factor-伪 (TNF- 伪) and erythropoietin-(EPO), interferon-纬 (IFN- 纬) on (CRA) in patients with tumor anemia. Methods the patients with malignant tumor were divided into two groups: experimental group (76 cases with anemia) and control group (21 cases without anemia). The parameters of iron metabolism were divided into test group 鈪,
本文编号:2457370
本文链接:https://www.wllwen.com/yixuelunwen/zlx/2457370.html