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目的 观察矽肺患者氧化应激指标及外周血单核细胞NF-κB水平的变化,探讨矽肺发生发展的机制.方法 选择某铸造厂接触矽尘作业工龄在1年以上的工人200例为接尘组,该厂2008年住院及门诊随访的矽肺患者130例为矽肺组,32例0+病例为观察对象组,同时选择某酒店服务人员100例为对照组.分别测定超氧化物歧化酶(SOD)、血清中谷胱甘肽过氧化物酶(GSH-Px)、一氧化氮合酶(NOS)活力,一氧化氮(NO)、丙二醛(MDA)含量及总抗氧化能力(T-AOC),外周血单核细胞核蛋白中NF-κB水平.结果 与对照组比较,接尘组和矽肺组NO含量明显升高,SOD活力明显降低,差异均有统计学意义(P<0.01).与对照组及接尘组比较,矽肺组T-AOC水平、NOS活力、MDA含量均明显升高,差异均有统计学意义(P<0.01).与对照组[(223.360±46.838)U/ml]比较,接尘组及矽肺组GSH-Px活力[(231.164±36.484)、(270.469±39.228)U/ml]明显升高,且矽肺组GSH-Px活力明显高于接尘组,差异均有统计学意义(P<0.05,P<0.01).与观察对象组[(256.906±21.418)U/ml]和Ⅰ期矽肺组[(259.594±34.790)U/ml]比较,Ⅲ期矽肺组GSH-Px活力[(290.750±39.129)U/ml]明显升高,差异均有统计学意义(P<0.05).与对照组[(59.71±9.27)ng/L]比较,接尘组及矽肺组NF-κB水平[(72.06±9.12)、(85.25±11.64)ng/L]明显升高,且矽肺组NF-κB水平明显高于接尘组,差异均有统计学意义(P<0.01).血清中GSH-Px活力与矽肺分期呈正相关(r=0.507,P<0.01).外周血单核细胞核蛋白NF-κB水平与矽肺分期、年龄、GSH-Px活力、NO含量呈正相关,差异均有统计学意义(r值分别为0.376、0.243、0.233、0.221,P<0.01).结论 机体氧化和抗氧化系统的失衡与矽肺的发生发展有关,并与NF-κB的活化一致.Abstract: Objective To investigate the change of indicators of oxidative stress in serum and NF-κB in peripheral blood mononuclear cells of patients with silicosis, and explore the mechanism of the development of silicosis. Methods The subjects were divided into (1) 200 workers exposed to SiO2 for at least 1 years in a foundry served as the dust-exposure group; (2) 130 cases with silicosis (Ⅰ phase silicosis 64 cases, Ⅱ phase 46 cases Ⅲ phase 20 cases) served as the silicosis goup; (3) 32 cases with 0+ phase silicosis in the foundry served as the observed group,(4)100 subjects from a hotel served as the control group. The serum including superoxide dismutase (SOD), nitric oxide (NO), serum glutathione peroxidase (GSH-Px), total antioxidant capacity (T-AOC), nitric oxide synthase (NOS), lipid malondialdehyde (MDA) and NF-κB protein levels in peripheral blood mononuclear cells were determined, respectively. Results Compared with the control group,NO levels in dust-exposed group and silicosis group significantly increased, and SOD decreased significantly (P<0.05 or P<0.01). Compared with the control group and dust-exposed group, T-AOC, NOS, MDA levels in silicosis group significantly increased (P<0.05 or P<0.01). GSH-Px in dust-exposed group and silicosis group were (231.164±36.484) and (270.469±39.228)U/md, respectively which were significantly than that [(223.360±46.838) U/ml] in control group (P<0.05 or P<0.01), and there was significant difference of GSHPx between the silicosis group and the dust-exposed group significantly (P<0.01). GSH-Px level [(290.750±39.129) U/ml] in Ⅲ phase silicosis group were significantly higher than those [(256.906±21.41) and (259.594±34.79) U/ml] in observation group and Ⅰ phase silicosis group (P<0.05). NF-κB levels [(72.06±9.12) and (85.25±11.64) ng/L] in dust-exposed group and silicosis group were significantly higher than that [(59.71±9.27) ng/L] in control group (P<0.01), and there was significant difference of between the silicosis group and the dust-exposed group (P<0.01). There was a positive correlation between serum GSH-Px level and the silicosis stages (r=0.507,P<0.0l). Also there was a positive correlation between NF-κB level and silicosis stages, age, GSH-Px or NO levels (r=0.376, 0.243, 0.233, 0.221, P<0.01). Conclusion The imbalance of oxidative and anti-oxidation system and the activation of NF-κB are related with the occurrence and development of silicosis. The monitoring of oxidative stress indicators and NF-κB is beneficial to the prediction and prognosis assessment of silicosis. 相似文献
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目的 通过综合分析3例职业性急性有机氟中毒病例的临床资料,总结职业性急性有机氟中毒救治过程中的经验和体会。 方法 对3例有机氟中毒患者的临床表现、实验室检查、影像学特征、主要治疗措施及转归进行分析。 结果 急性有机氟中毒以咳嗽、胸闷、气急为主要表现,影像学特征为两肺渗出性病变,予以早期足量及中晚期小剂量糖皮质激素、营养心肌等综合治疗,3例患者均治愈,随访3月未发生肺纤维化。 结论 在急性有机氟中毒的救治过程中,合理的激素治疗、保护重要脏器是治疗的重点。 相似文献
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目的观察矽尘接触者和矽肺患者外周血单核细胞核转录因子-κB(NF-κB)水平的变化,探讨NF-κB在矽肺发生发展中的作用。方法采用ELISA法对100名不接触粉尘的对照人群,200名接触矽尘1年以上的接尘工人,32名矽尘作业观察对象(原诊断0+患者)及79例矽肺患者,检测其外周血单核细胞胞核蛋白中的NF-κB水平。结果矽肺组NF-κB水平较对照组和接尘组明显升高,接尘组NF-κB水平较对照组明显升高,差异均有统计学意义;在不同期别矽肺患者中NF-κB水平随矽肺期别升高也有升高的趋势。多元回归分析也表明NF-κB水平与接尘情况和矽肺的病情有关。结论接尘组和矽肺组外周血单核细胞NF-κB均有升高,此种升高除与矽肺的发病有关外,与矽肺的严重程度也有关,提示对外周血单核细胞NF-κB水平的监测可能成为矽肺发病预测、预后评估的生物标志物,而适当干预NF-κB的活化可能是矽肺防治新的干预靶点。 相似文献
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急性苯胺类化合物中毒主要引起高铁血红蛋白血症 ,我们收治 1例急性苯胺类化合物中毒病人出现心律失常 ,结合文献报告如下。1 临床资料1 1 一般情况 患者 ,男 ,3 2岁 ,从事某化工厂操作工 2个月。因头昏、无力、发绀、恶心 7h入院。患者于事故当日上午 8:3 0起 ,在某化工厂反应锅内清除苯胺类余料 ,工作至 10 :0 0左右即感头昏 ,外出休息 1h后头昏加重 ,并出现恶心、无力 ,随即回家休息 ,至14 :3 0时患者起床 ,感头昏加剧 ,恶心、无力不能行走 ,并伴有心悸、胸闷。送往某医院 ,16:0 0后 ,用亚甲蓝 40mg + 2 5%葡萄糖盐水 (GS) 2 0ml静… 相似文献
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影响老年糖尿病患者社区卫生服务的若干因素分析 总被引:1,自引:0,他引:1
目的:通过影响老年糖尿病患社区卫生服务的若干因素的分析,探讨加强老年人社区卫生服务中的对策;方法:对上海市杨浦区某社区卫生服务中心服务范围内的150名老年糖尿病患(简称老年人)进行一对一询问式调查(调查卷A)和服务中的30位医生进行间卷调查(调查卷B);结果:60.87%的老年人认为社区医生服务态度好;65.38%的老年人对社区卫生服务认识不够;老年人和医生双方对健康教育的需求认识之间存在矛盾;73.25%的老年人认为社区卫生服务中的医保政策需改进;结论:发挥社区卫生服务”六位一体”优势,为老年人提供“三贴近”的卫生服务,加大对社区卫生服务的宣传、提高社区医生的水平,完善社区卫生政策是当务之急。 相似文献
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