排序方式: 共有23条查询结果,搜索用时 15 毫秒
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男性,26岁,1994年6月14日入院。入院前已明确淋巴瘤诊断年余。入院前3天腹痛、高热伴轻度恶心。经抗炎治疗,腹痛、高热不见好转。查体:T39.8℃;P80次/分;BP16/10kpa;R22次/分。消瘦、轻度贫血外观,胸廓对称,双肺未闻啰音,腹平坦,右下腹麦氏点局部明显压痛,轻度反跳痛及肌紧张。全腹未及包块,脾稍大,腹部无移动性浊音,肠鸣音尚可。血常规示;Hb:100g/L;Wbc:1.9×10~9/L;S:0.61。术中见:阑尾充血水肿不明显,为腹膜外位阑尾,盲肠壁充血水肿,肠系膜无肿大淋巴结,腹腔无脓性分泌物。术后抗炎、补液、激素冲… 相似文献
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Objective To study the protection of vanillin derivative VND3207 on the cytogenetic damage of mouse bone marrow cell induced by ionizing radiation.Methods BALB/c mice were randomly divided into five groups:normal control group,2 Gy dose irradiation group,and three groups of 2 Gy irradiaiton with VND3207 protection at doses of 10,50 and 100 mg/kg,respectively.VND3207 was given by intragastric administration once a day for five days.Two hours after the last drug administration,the mice were irradiated with 2 Gy γ-rays.The changes of polychromatophilic erythroblasts micronuclei (MN),chromosome aberration (CA) and mitosis index (MI) of mouse bone marrow cells were observed at 24 and 48 h after irradiation.Results Under the protection of VND3207 at the dosages 10,50,100 mg/kg,the yields of poly-chromatophilic erythroblasts MN and CA of bone marrow cells were significantly decreased(t = 2.36-4.26,P < 0.05),and the marrow cells MI remained much higher level compared with the irradiated mice without drug protection (t = 2.58,2.01,P < 0.05).The radiological protection effect was drug dose-dependent,and the administration of VND3207 at the dosage of 100 mg/kg resulted in reduction by 50% and 65% in the yields of MN and CA,respectively.Conclusions VND3207 had a good protection effect of on γ-ray induced cytogentic damage of mouse bone marrow cells. 相似文献
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目的:探讨早期护理干预对新生儿缺血缺氧性脑病(HIE)患儿预后的影响,提出合理的护理干预措施.方法:实验法,将患儿随机分为干预组和对照组各25例,两组患儿均予HIE的常规治疗及基础护理,予合理喂养.干预组在以上基础上给予针对患儿的早期、系统化、个性化的护理干预,包括视觉刺激、听觉刺激、触觉刺激、前庭运动刺激.出院后继续给予干预.对两组患儿预后进行评估,并对评估结果进行分析.结果:干预组在1.5岁和2岁时身长、头围、体重略高于对照组.干预组1岁以后智能发育指数(MDI)、运动发育指数(PID)均高于对照组,两组比较差异具有统计学意义(P<0.05).结论:早期护理干预能有效促进HIE患儿的智能发育,明显改善患儿预后. 相似文献
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人早幼粒白血病细胞系HL-60细胞在某些化合物诱导下,如二甲基亚砜(DMSO),维甲酸(RA)等,从形态到功能都向粒细胞方向分化;而用佛波酯(TPA)或1,25(OH)_2VD_3处理后,细胞则沿单核-巨噬细胞方向分化成熟。但对其分化机制的了解仍十分有限。近几年的研究认为HL-60细胞诱导分化与蛋白激酶、蛋白质磷酸化-去磷酸化之间关系密切。现就这方面的研究结果作一概述。一、蛋白激酶与细胞分化蛋白激酶催化完成蛋白质磷酸化反应,根据调节因子的不同和对蛋白质中不同氨基酸残基(Ser、Thr、Tyr)的磷酸化,蛋白激酶又分成若干种。实验结果表明,主要是下面几种蛋白激酶涉及HL-60细胞分化 相似文献
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目的 评价不同LET辐射致DNA损伤以及药物的防护作用.方法 分别以60Co γ射线、质子束、7Li重离子束照射溶液状态超螺旋构象质粒DNA,通过琼脂糖凝胶电泳分析DNA分子构象变化,检测DNA损伤程度及VND3207的防护作用.结果 质子和7Li重离子体外所致质粒DNA损伤明显比γ射线严重.药物VND3207能够有效减轻所观察的3种不同LET辐射对质粒DNA的损伤,加药组与不加药组相比,质粒DNA开环构象显著减少,保护效果随着药物浓度的增加更加明显.200 μmol/L浓度对50 Gy γ射线、质粒和7Li重离子辐照质粒DNA损伤的保护效果(质粒超螺旋构象百分比)分别为85.3%(t=3.70,P=0.033)、73.3%(t=10.58,P=0.017)和80.4%(t=8.57,P=0.008).可见VND3207对重离子辐射损伤的保护效应尤为显著,明显优于质子辐照损伤.结论 药物VND3207对辐射DNA损伤具有较好的保护作用,特别是对γ射线和重离子辐射损伤的保护作用更为明显.Abstract: Objective To evaluate the radioprotective effect of vanillin derivative VND3207 on DNA damage induced by different LET ionizing radiation.Methods The plasmid DNA in liquid was irradiated by 60Co γ-rays, proton or 7Li heavy ion with or without VND3207.The conformation changes of plasmid DNA were assessed by agarose gel electrophoresis and the quantification was done using gel imaging system.Results The DNA damage induced by proton and 7Li heavy ion was much more serious as compared with that by 60Co γ-rays, and the vanillin derivative VND3207 could efficiently decrease the DNA damage induced by all three types of irradiation sources, which was expressed as a significantly reduced ratio of open circular form (OC) of plasmid DNA.The radioprotective effect of VND3207 increased with the increasing of drug concentration.The protective efficiencies of 200 μmol/L VND3207 were 85.3% (t =3.70,P =0.033), 73.3% (t = 10.58, P =0.017)and 80.4% (t =8.57,P =0.008)on DNA damage induction by 50 Gy of γ-rays, proton and 7Li heavy ion, respectively.It seemed that the radioprotection of VND3207 was more effective on DNA damage induced by high LET heavy ion than that by proton.Conclusions VND3207 has a protective effect against the genotoxicity of different LET ionizing radiation, especially for γ-rays and 7 Li heavy ion. 相似文献
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目的 研究香兰素衍生物4-羟基-3,5-二甲氧基苯甲醛(VND3207)对γ射线整体照射小鼠骨髓细胞遗传损伤的防护作用。方法 BALB/c小鼠按10、50和100 mg/kg不同剂量灌胃给药,1次/d,连续5 d,最后一次给药后2 h, 2 Gy 60Co γ射线照射,照射后48 h观察小鼠骨髓嗜多染红细胞微核、染色体畸变和骨髓有丝分裂指数的改变。结果 不同剂量(10、50和100mg/kg)的VND3207均能有效地降低小鼠骨髓嗜多染红细胞微核率(t=2.40~4.26,P<0.05)和染色体畸变率(t=2.36~3.52,P<0.05),同时提高骨髓有丝分裂指数。药物保护效果与给药剂量呈依赖关系,其中100 mg/kg剂量组的微核率和染色体畸变率与单纯照射组相比,分别降低了65%和50%。结论 VND3207对60Co γ射线诱发的小鼠骨髓辐射损伤有良好的保护作用。 相似文献