放射线联合p53基因及内皮抑素治疗小鼠前列腺癌皮下移植瘤

Objective To test the hypothesis that p53 gene therapy combined with endostatin can enhance tumor response to radiation therapy of RM-1 mouse xenograft prostate cancer and to investigate its mechanism. Methods A mouse prostate cancer model was established. Then mice with xenograft tumor were randomly divided into group A (control), B (radiation), C (radiation and rAdp53), D (radiation and rh-endostatin) and E (radiation and rAdp53 and rh-endostatin). On day 1, rAdp53 was injected intra-tumorously with 1 × 1010 vp per animal to group C and E. From day 1 to 14, rh-endostatin was given 15 mg/kg intraperitoneally daily to group D and E. On day 4 single fraction of 15 Gy was given to tumors in groups B, C, D and E. Normal saline was injected intra-tumorously or intraperitoneaUy accordingly as control. No treatment was done to group A. Tumor volume was measured daily. Samples were collected on Days 5, 10 and 15. Ki67, CD31, p53 and VEGF were detected by means of immunohistochemistry. Results (1) Radiation alone, radiation combined with intra-tumorous injection of Adp53 and/or intraperitoneal injection of rh-endostatin resulted in tumor growth arrest of RM-1 cells in vivo (P = 0.000). Radiation combined with both rAdp53 and rh-endostatin was the most effective treatment (P < 0.05). (2) All the four treatment groups had a decreased expression of mutant type P53 (P = 0.000). The expression of Ki67 in groups B and C were equal (P 0.05) and increasing (P = 0.000), respectively. Group D had a up-down-up curve (P < 0.05), but group E had a up-down one. On day 5 the expresion of VEGF in group E was the lowest (P < 0.05). An increased expression of MVD compared with the control was shown, and MVD in groups C, D and E were always higher than that in the control (P < 0.05). Conclusions The limitation of radiotherapy could be overcome by combination with beth p53 gene therapy and endostatin on the growth of mouse prostate cancer cell. Radiation, rAdp53 and endostatin have their own role but they can be interacted with each other.     

急诊心肺复苏失败原因探讨

目的 :探讨急诊心肺复苏失败原因 ,以便提高急诊抢救成功率。方法 :对急诊抢救室及重症监护室抢救成功与失败病例进行对比分析。结果 :急救反应时间 ,复苏开始时间 ,除颤器、气管插管等使用存在明显差异。结论 :心肺复苏开始太迟 ,没有及早使用除颤器、气管插管 ,心肺复苏操作不到位 ,没有合理使用复苏药物是抢救失败的主要原因     

直肠癌盆腔放疗后肠受照射影响因素的研究

目的 评价体位、性别、手术、膀胱充盈状态对直肠癌放疗后肠受照射的影响。方法36例直肠癌患者被研究，盆腔放疗采用1后2侧野三维适形放射治疗（3DCRT）的方法，处方剂量为50Gy。利用每个计划的剂量．体积直方图（DVH）对盆腔内肠的受照剂量和体积进行分析。结果膀胱充盈差和好时肠受照射的平均剂量分别是23．8和18．3Gy（P=0．004），V45高剂量受照体积分别是15．7％和7．8％（P=O．004）；体位仅对肠V15，低剂量受照体积有显著影响；性别对肠受照射的最大剂量和V15，有显著影响；手术对肠受照射的平均剂量有显著影响，分别是术前19．0Gy和术后22．5Gy（P=0．015）；在仰卧或俯卧、术前或术后膀胱充盈好时均比差时肠受照射剂量要低或体积要小。膀胱充盈好和差时肠受到高剂量照射的体积V4，在俯卧位分别是15．3％和7．4％（P=0．023），术后分别是14．1％和7．2％（P=0．014），差异有统计学意义。结论 患者治疗体位、性别、手术对盆腔内肠受照射剂量和体积有一定的影响，膀胱充盈状态有显著影响。     

放射线联合p53基因及内皮抑素治疗小鼠前列腺癌皮下移植瘤

Objective To test the hypothesis that p53 gene therapy combined with endostatin can enhance tumor response to radiation therapy of RM-1 mouse xenograft prostate cancer and to investigate its mechanism. Methods A mouse prostate cancer model was established. Then mice with xenograft tumor were randomly divided into group A (control), B (radiation), C (radiation and rAdp53), D (radiation and rh-endostatin) and E (radiation and rAdp53 and rh-endostatin). On day 1, rAdp53 was injected intra-tumorously with 1 × 1010 vp per animal to group C and E. From day 1 to 14, rh-endostatin was given 15 mg/kg intraperitoneally daily to group D and E. On day 4 single fraction of 15 Gy was given to tumors in groups B, C, D and E. Normal saline was injected intra-tumorously or intraperitoneaUy accordingly as control. No treatment was done to group A. Tumor volume was measured daily. Samples were collected on Days 5, 10 and 15. Ki67, CD31, p53 and VEGF were detected by means of immunohistochemistry. Results (1) Radiation alone, radiation combined with intra-tumorous injection of Adp53 and/or intraperitoneal injection of rh-endostatin resulted in tumor growth arrest of RM-1 cells in vivo (P = 0.000). Radiation combined with both rAdp53 and rh-endostatin was the most effective treatment (P < 0.05). (2) All the four treatment groups had a decreased expression of mutant type P53 (P = 0.000). The expression of Ki67 in groups B and C were equal (P 0.05) and increasing (P = 0.000), respectively. Group D had a up-down-up curve (P < 0.05), but group E had a up-down one. On day 5 the expresion of VEGF in group E was the lowest (P < 0.05). An increased expression of MVD compared with the control was shown, and MVD in groups C, D and E were always higher than that in the control (P < 0.05). Conclusions The limitation of radiotherapy could be overcome by combination with beth p53 gene therapy and endostatin on the growth of mouse prostate cancer cell. Radiation, rAdp53 and endostatin have their own role but they can be interacted with each other.     

中药材贮藏期虫蛀现象的研究现状

中药材在贮藏过程中,受自身性质及外界贮藏因素的影响,容易发生虫蛀现象。虫蛀后的中药材,轻则影响外观,降低消费者的购买力;重则影响品质,降低其药用价值,并产生虫体、排泄物及分泌物等杂质,严重污染中药材。该研究对影响中药材虫蛀发生的相关因素和虫蛀后的成分变化进行文献整理,对预防虫蛀发生的养护措施进行系统总结,首次对可应用于中药材贮藏过程中的虫蛀发生检测技术进行综述。在贮藏过程中,虫蛀的发生是生物因素(害虫的来源、种类和虫口密度等)、内在因素(水分、化学成分和自身的新陈代谢等)和环境因素(温度、相对湿度和环境含氧量等)共同作用的结果。虫蛀发生后,中药材所含的成分含量存在明显的变化。通过对中药材入库前的严格检查、入库后的定期养护及采用恰当的贮藏养护方法,可降低虫蛀发生率,提高中药材的保存完好率。中药材的贮藏养护是保证质量的关键环节,通过科学规范的贮藏,严格执行操作管理规范,就能降低被虫蛀的风险,保证中药材的品质。     

THE LATE EFFECTS ON BONE MARROWS IN MICE AFTER TOTAL BODY IRRADIATION BY P(35) BE FAST NEUTRONS AND γ RAYS

Thebonemarrowisadose-limitingcellre11ewaltissueforwide-fieldirradiation,inspiteofbothearlyandlateperiodaftertheradiotherapy.Thedamageofthehernatopoieticstemcellandmicroenvironmentofthebonemarrowcanbefoundafterirradiationandthelong-termmyelosuppressioncanalsoberesuItedinwhenwide-fieldirradiationisused.It'sveryimportantforfurtherclinicaltherapytounderstandthcIateeffectsonbonemarrowsafterwide-fieldortotalbodyirradiation.Inthispaperthelateeffectsonbonemarrowsinmiceaftertotalbodyirracliationwithsi…     

醒脑静与纳络酮合用治疗肺性脑病120例临床研究

目的　探讨醒脑静与纳络酮合用治疗肺性脑病的疗效及安全性。方法　 12 0例肺性脑病患者 ,随机分为对照组 , 和治疗组。对照组 34例 ,常规治疗给予氧疗、抗感染、解痉平喘、排痰、应用呼吸兴奋剂。对照组 4 0例 ,常规治疗基础加用纳络酮。治疗组 4 6例 ,在对照组治疗的基础上加用醒脑静与纳络酮观察。治疗前后分别记录病人的神志和血气分析结果。结果　对照组 显效 6例 ,有效 18例 ,无效 10例 ,总有效率 70 .5 9%。对照组 显效 8例 ,有效 2 2例 ,无效 10例 ,总有效率 75 %。治疗组显效 12例 ,有效 32例 ,无效 2例 ,总有效率 95 .6 5 %。治疗组与对照组对比差异有显著意义 (P <0 .0 5 )。结论　醒脑静与纳络酮联合应用 ,能缩短病人的清醒时间 ,降低 Pa(CO2 ) ,提高 Pa(O2 )和 p H值 ,无明显副作用     

肿瘤浸润淋巴细胞对直肠癌术前放疗预后的影响

目的 探讨直肠痛肿瘤组织内术前放疗后浸润淋巴细胞(TIL)数量改变对预后的影响.方法 搜集近8年余接受30 Gy分10次12 d完成的术前放疗的直肠癌患者107例,分析TIL分级与术前放疗后病理消退程度及预后关系.结果 直肠癌放疗前TIL 1级75例,2级16例,3级16例,4级0例,术前放疗后TIL 1级19例,2级43例,3级35例,4级10例.放疗后病理消退分级1级36例,2级57例,3级14例.单因素分析发现放疗前及放疗后TIL对局部病理消退影响有统计学意义(X2=36.80,P<0.01;X2=14.00,P<0.01);术前放疗后癌巢内TIL及病理消退对预后影响显著(X2=24.00,P<0.01;X2=12.17,P<0.01).Logistic多元分析提示放疗后TIL与病理消退关系密切(X2=8.05,P<0.01).结论 放疗前及放疗后TIL与直肠癌术前放疗局部病理消退相关.直肠癌术前放疗后癌巢TIL是影响生存预后的因素之一.     

闭合复位经皮交叉穿针固定治疗距骨颈骨折

自1996年～2004年1月，笔者采用闭合复位经皮交叉穿针内固定的方法治疗距骨颈骨折，效果满意，现报告如下：     

岳阳市2009-2012年非结防机构网络报告肺结核患者转诊与追踪情况分析

目的分析岳阳市2009-2012年非结防机构网络报告肺结核患者的转诊、追踪情况,提升患者发现水平。方法利用结核病管理信息系统中岳阳市2009-2012年定时统计非结防机构网络报告肺结核患者转诊、追踪及核查年报表,对13 242例应转诊患者的转诊到位率、追踪到位率、总体到位率、到位确诊情况及非结防机构患者发现占总肺结核患者发现的比例情况进行分析。结果岳阳市2009-2012年非结防机构网络报告肺结核患者转诊到位率分别为52.7%(1 556/2 955)、67.5%(2 181/3 232)、67.9%(2 284/3 365)和65.8%(2 427/3 690);追踪到位率分别为74.8%(1 023/1 367)、94.1%(977/1 038)、95.9%(1 022/1 066)和97.0%(1 224/1 262),呈逐年上升趋势(x~2=344.9,P0.05);总体到位率分别为88.4%(2 611/2 955)、98.1%(3 171/3 232)、98.7%(3 321/3 365)和99.0%(3 652/3 690),呈逐年上升趋势(x~2=445.9,P0.05);到位活动性肺结核患者检出率为37.0%(4 714/12 755);非结防机构活动性肺结核患者发现占总发现比例为27.6%(4 714/17 078),发现新涂阳肺结核患者占总新涂阳发现数的29.6%(2 481/8 392)。结论加强与各级非结防机构的合作,完善患者转诊与追踪体系,提高患者发现水平。