Study on sensitivity of neuroglioma to chemotherapeutic drugs]

In this study, the chemosensitivity of 36 cases' fresh neuroglioma specimens was examined in vitro with MTT assay. The separation method for single tumor cell, the number of planting of cells, and the dosage and acting time of drugs, which have effects on the results of MTT assay, were studied systematically. On the basis of this experiment, we established a screening method for the chemosensitivity of neuroglioma; it is accurate, rapid, and simple. At the same time, the results showed that neuroglioma was more sensitive to the chemotherapeutic drugs Vm26, DDP and MMC, and the sensitivity varied with not only the drugs but also the individuals.     

CD3AK细胞冻融提取液的抗肿瘤活性研究

为研究ＣＤ３ＡＫ细胞冻融提取液的抗肿瘤作用,作者采集正常人外周血分离单个核细胞（ＰＢＭＣ）,先用抗ＣＤ３的单克隆抗体（ＣＤ３ＭｃＡｂ）的ｒＩＬ－２诱导和激活,使之成为ＣＤ３ＭｃＡｂ激活的杀伤细胞（ＣＤ３ＡＫ）,再制备ＣＤ３ＡＫ的冻融提取液,然后进行体内,外抗肿瘤实验。结果;低剂量的ＣＤ３ＭｃＡｂ和ｒＩＬ－２能明显诱导ＰＢＭＣ的活化和增殖;激活后的ＣＤ３ＡＫ细胞冻融提取液可抑制小鼠肝癌实体瘤细胞Ｈ２     

p27~(KIP1)在骨巨细胞瘤中表达的意义

目的 :研究骨巨细胞瘤中 p2 7KIP1 的表达 ,探讨其与骨巨细胞瘤发生病理分级与预后的关系。方法 :应用免疫组化 S- P法检测 40例骨巨细胞瘤石蜡标本中 p2 7KIP1的表达。结果 :p2 7KIP1的表达与骨巨细胞瘤的病理分级呈明显相关。 p2 7KIP1在 40例骨巨细胞瘤中总表达阳性率为 45 .0 % (18/40 ) ,其中 、 级为 5 7.1% (16 /2 8) , 级为16 .7% (2 /12 ) ,组间差异显著。结论 :p2 7KIP1蛋白在 级骨巨细胞瘤表达阳性率较 、 级明显减低 ,对骨巨细胞瘤的诊断和分级有意义 ,可作为诊断、分级和预后判定的指标之一。     

前方牵引器结全方丝弓矫治器矫治前牙反He

目的:进一步了解前方牵引矫治器对前牙反的矫治效果.方法:选择17例安氏Ⅲ类病人,男7例,女10例,最大12.8岁,最小8.5岁,均为替牙期及恒牙早期,X线头影测量显示主要为上颌后缩及下颌轻度前突,头颅侧位片上颈椎多数显示为生长发育高峰前期.结果:平均疗程9.5个月,X线头影测量结果骨骼改变主要为SNA角增大,平均增大2.33°,ANB角增大,平均增大4.17°,SNB角减小,平均减小1.97°.统计学处理有显著性差异.结论:前方牵引矫治器有促进上颌骨向前生长,抑制下颌骨向前生长的作用;而其口内装置选用方丝弓矫治器主弓丝上焊牵引钩配合矫形牵引,使之更为方便简捷.     

盐酸山莨菪碱对噪声暴露后耳蜗琥珀酸脱氢酶活性的影响

目的：观测豚鼠在噪声暴露后不同时间内盐酸山莨菪碱（６５４－２０防治组和损伤组的耳蜗琥珀酸脱氢酶（ＳＤＨ）活性变化,探讨噪声暴露后ＳＤＨ活性的变化趋势以及６５４－２在噪声暴露中对ＳＤＨ活性的影响。方法：把豚鼠分成对照组、损伤组与６５４－２防治组,在噪声暴露后不同时期,用Ｎａｃｈｌａｓ四唑氮盐法及图象分析仪显示并测算ＳＤＨ活性。结果：在噪声暴露后第３天,各组酶活性损伤最重。各组耳蜗ＳＤＨ活性第１、２回     

玻璃体切除术联合视网膜激光光凝治疗严重增殖性糖尿病视网膜病变的疗效分析

目的：分析玻璃体切除术治疗严重增殖型糖尿病视网膜病变（ＰＤＲ）的疗效。方法：ＰＤＲ患者３１例（３５眼）,在控制血糖、血压情况下行玻璃体切除术,术中均作次全或全视网膜光凝。分析手术前后及随访６～３２个月的资料。结果：最后随访时,视网膜平伏,眼底清晰可见,保留一定视力的手术成功眼为２９眼,最后成功率为８２．９％;病变较轻组比病变重度组成功率高（Ｐ〈０．０５）;出血时间〉６个月组较出血时间≤６个月成功率     

间接免疫荧光法及蛋白质印迹法对肺癌患者体内自身抗体的分析

目的：了解肺癌患者血清自身抗体阳性率、细胞内定位及荧光图形特点,探索自身抗体作为肿瘤樗物的可能性。方法：应用间接免疫荧光法（ｉｎｄｉｒｅｃｔ ｉｍｍｕｎｏｆｌｕｏｒｅｓｓｅｅｎｅｅ,ＩＩＦ）检测７７份肺癌以及１４０份不同年龄段正常人血清中自身抗体。提取人喉癌上皮细胞（Ｈｅｐ－２）蛋白抗原,采用蛋白质印迹法对８１份肺癌患者及５２份正常人血清进行分析。结果：肺癌组和对照组的自身抗体阳性率有显著差别,两     

Pulmonary function changes following surgical correction for pectus excavatum

Ｐｅｃｔｕｓｅｘｃａｖａｔｕｍｉｓｔｈｅｍｏｓｔｆｒｅｑｕｅｎｔａｎｔｅｒｉｏｒｃｈｅｓｔｗａｌｌｄｅｆｏｒｍｉｔｙａｎｄｉｓｐｒｏｄｕｃｅｄｂｙｐｏｓｔｅｒｉｏｒｄｅｐｒｅｓｓｉｏｎｏｆｔｈｅｓｔｅｒｎｕｍａｎｄｌｏｗｅｒｃｏｓｔａｌｃａｒｔｉｌａｇｅ Ｉｔｏｃｃｕｒｓｍｏｒｅｃｏｍｍｏｎｌｙｉｎｂｏｙｓｂｙａｌｍｏｓｔａ 4∶ 1ｒａｔｉｏ Ｔｈｅｓｔｅｒｎｕｍａｎｄｃｏｓｔａｌｃａｒｔｉｌａｇｅｔｈａｔａｒｅａｎｇｌｅｄｐｏｓｔｅｒｉｏｒｌｙｍａｙｄｅｃｒｅａｓｅｔｈｅｃｈｅｓｔｖｏｌｕｍｅ,ｒ…     

Cloning of Chinese obese cDNA and its expression in E. coli

Ｏｂｅｓｉｔｙ,ｔｈｅｒｅｓｕｌｔｏｆａｄｉｓｏｒｄｅｒｉｎｔｈｅｂｏｄｙｅｎｅｒｇｙｂａｌａｎｃｅｔｈａｔｏｃｃｕｒｓｗｈｅｎｅｎｅｒｇｙｉｎｔａｋｅｃｈｒｏｎｉｃａｌｌｙｅｘｃｅｅｄｓｅｎｅｒｇｙｅｘｐｅｎｄｉｔｕｒｅｂｙｔｈｅｃｏｍｐｌｅｘｉｎｔｅｒａｃｔｉｏｎｓｂｅｔｗｅｅｎｅｎｖｉｒｏｎｍｅｎｔａｌａｎｄｇｅｎｅｔｉｃｆａｃｔｏｒｓ ,ｈａｓｂｅｃｏｍｅａｃｏｍｍｏｎｗｏｒｌｄｗｉｄｅｈｅａｌｔｈｐｒｏｂｌｅｍ Ａｌｔｈｏｕｇｈａｌｏｔｏｆｗｏｒｋｈａｓｂｅｅｎｄｏｎｅｆｏｒｍａｎｙｙｅａ…     

Effects of arotinoid acid on induction of apoptosis and differentiation and telomerase activity and cell cycle in the HL～60 cell line

Objective To investigate the effects of arotinoid acid (Ro13-7410) on the morphological and functional alterations of leukemia HL-60 cell line and compared with those of RA.Methods Differentiation of HL-60 cells was assessed by morphology and by NBT reduction.Trypan blue exclusion was used to determine viability.Apoptosis was assessed by changes in cell morphology and by measurement of fragmented DNA using the PCD-assay-kit.Telomerase PCR ELISA-kit tested telomerase activity.The cell cycle was analyzed by flow cytometry.Results Incubation of the HL-60 cells with 10(-6)-10(-8) mol/L Ro13-7410 resulted in suppression of cell growth.Apoptotic cells were detected following exposure to 10(-6) mol/LRo13-7410 for 3 hours by measurement of the 'in situ' enzymatic labeling of DNA breaks with biotinylated dUTP.Ultrastructural examination of Ro13-7410-treated samples showed cells with chromatin compaction and cytoplasm condensation and the presence of 'apoptotic bodies'.Cells induced into apoptosis were accompanied by increase of intracellular free Ca[2+].Percentage of HL-60 cells reduced NBT following incubation with Ro13-7410 was lower than with all-trans retinoic acid (RA) (27% vas 85%).Telomerase PCR-ELISA assay showed that HL-60 cells cultured in the absence of inducing agents had significant telomerase activity.Telomerase activity declined gradually after 10(-6) mol/L Ro13-7410 treatment, and changes becoming evident at 1 day.The inhibition of telomerase activity at day 5 of treatment with Ro13-7410 was less effective than with RA.DNA flow cytofluorimetric analysis revealed that Ro13-7410 caused partial cell arrest in the G(2)/M phase after a 2-day treatment and the percentage of cells arrested in the G(2)/M phase increased after 4-days treatment.With RA-treated cells, a reduction in the percentage of cells in the G(2)/M phase was observed after 2-day of treatment.Conclusion Our study shows that Ro13-7410 suppresses HL-60 cells growth mainly via the induction of apoptosis and is less effective than RA in induction differentiation.Ro13-7410 dramatically inhibits telomerase activity during the course of induction and results in G(2)/M arrest within 2 days.These findings suggest that Ro13-7410 is worthy of further study for its effects on leukemic cells.