hTERT启动子调控hNIS基因介导肺癌细胞碘摄取和131I治疗的实验研究

目的 构建含人端粒酶反转录酶(hTERT)核心启动子调控的人钠/碘同向转运体(hNIS)基因重组腺病毒,并靶向转染至肺癌A549细胞中特异性表达.探讨hTERT启动子调控的hNIS基因介导放射性碘治疗肿瘤的可能性.方法 应用AdEasy系统构建重组腺病毒Ad-hTERT-hNIS,同时构建巨细胞病毒(CMV)启动子调控的hNIS重组腺病毒Ad-CMV.hNIS作为阳性对照,不含hNIS的重组腺病毒Ad-CMV作为阴性对照.应用反转录.聚合酶链反应(RT-PCR)方法验证hTERT在转染肿瘤细胞中的转录活性,摄碘实验检测表达的hNIS蛋白功能,细胞克隆形成实验评价131I对转染肿瘤细胞的毒性作用.结果 成功构建重组腺病毒Ad-hTERT-hNIS、Ad-CMV-hNIS及Ad-CMV,并经PCR验证正确.RT-PCR证实hNIS cDNA能从Ad-hTERT-hNIS转染的细胞中扩增出来.Ad-hTERT-hNIS和Ad-CMV-hNIS转染的肺癌A549细胞摄碘能力比阴性对照组Ad-CMV转染的细胞分别提高了23和31倍,且摄碘能力可以被NaClO4抑制.Ad-hTERT-hNIS和Ad-CMV-hNIS转染的肺癌A549细胞均可被131I杀死,2组细胞成活率分别为(31.2±1.45)%和(23.6±4.08)%,而阴性对照组和未转染病毒组分别为(89.0 ±2.99)%和(91.2 ±4.63)%.结论 hTERT启动子调控的hNIS重组腺病毒转染肿瘤细胞后,应用131I治疗有望成为一种新的基因靶向治疗手段.     

广东省梅县重点人群碘营养状况调查分析

Objective To estimate the present salt iodine content and iodine nutrition need of high risk population of iodine deficiency disorder in Meixian County. Methods Each primary school was selected from urban and rural areas(Xiyang Town, 20 kilometers away from Meixian County), the goiter rate of 8 to 10 year-old students was examined and urinary iodine and household salt iodine was sampled. Twenty to 40 year-old women of childbearing age nearby schools around the urban and villages around Xiyang Town were selected to collect their urine and salt samples. At urban hospitals and rural health centers, 0 to 2 year-old infant urine samples were collected, Thyroid gland was palpated and urinary iodine was determined by iodine in urine by As3+-Ce4+catalytic spectrophotometry, salt iodine was determined by direct titration. Results The goiter rates of 8 to 10 year-old students were 1.5 % (3/200), 1.0% (1/100) for the urban area and 2.0% (2/100) for rural area. Median of urinary iodine in 8 to 10 year-old students, infants, women of childbearing age averaged at 237.1 μg/L and 280.1, 234.7,187.6 μg/L respectively, with each being 287.4,245.0,205.5 μg/L in urban area and 278.9,228.5,176.4 μg/L in rural area. Women of childbearing age had a higher percentage of urinary iodine < 50.0 μg/L than students,students had a higher percentage than infants, each being 7.5%(15/200), 4.5%(9/200), 4.0%(4/100). The ration of urinary iodine > 300.0 μg/L was more in infants than in students, that in students was more than that in women of childbearing age, each being 33.0% (33/100), 30.0% (60/200),22.5% (45/200). The median of salt iodine was 27.2 mg/kg. The coverage of iodized salt was 100.0%(400/400). Ninty-seven percent(194/200) and 96.0% (192/200) of qualified iodized salt were consumed in urban area and in rural area. Conclusions The amount of iodine added to salt meets the requirement in the 3 kinds population risk of iodine deficiency disorder. But a higher iodine status has been found out in students and infants. It is reasonable to decrease the present salt iodine content.     

胺碘酮治疗心律失常53例临床分析

2004年1月~2006年1月,我院应用胺碘酮治疗心律失常53例,获得满意疗效。现报告如下。临床资料:本组53例患者中,男39例,女14例;年龄31~81岁,平均59.5岁。均曾应用多种抗心律失常药物(如异搏定、慢心律、心律平、心得安及普鲁卡因酰胺)治疗,疗效不佳。其中频发性早搏16例,频发性早     

离子电极法测定SMZ片剂含量的研究

目的：研究用离子电极法测定SMZ片剂含量的效果。方法：用碘离子选择电极作为指示电极，KI溶液回滴过量Ag^ 。结果：测定结果正确，符合药典要求。结论：离子电极法是测定SMZ片剂含量的有效方法。     

碘对比剂在CT检查中的应用

我院自 1994年使用CT检查以来 ,需增强检查者的比例越来越高。增强检查确实提供了CT平扫不可替代的诊断信息 ,但是碘对比剂的副作用却令人担忧 ,因此 ,CT室的护理人员应认真做好对患者的筛选、敏试工作 ,严格掌握禁忌证 ,加强对副反应的预防性措施及意外抢救工作 ,合理使用对比剂 ,现将我院应用碘对比剂的方法介绍如下。1　严格掌握禁忌证严重的甲状腺功能亢进、失代偿性心肌功能不全者禁忌。妊娠及急性盆腔炎症时禁行子宫输卵管造影。2　认真筛选高危因素有碘造影剂过敏、严重肝肾功能损害、心脏和循环功能不全、肺气肿、体质极差者 ,重…     

巧用Ⅱ型安尔碘清除残留的骨水泥

骨水泥是骨关节手术中常用的填充材料，搅拌后黏稠，凝固迅速，易附着于搅拌器皿及手术器械而不易除去，用器械强行刮除已干涸的骨水泥会造成碎屑飞溅，影响器械台面整洁，若在骨水泥尚未完全硬化时用0．2％的Ⅱ型安尔碘棉球擦拭，即可轻松快速彻底清洁手术用物上的骨水泥。此法简便快捷，对器械无损伤，对环境及患者无害，值得推广应用。     

单腔起搏复律除颤器反复放电1例分析

患者女性，46岁，既往有甲亢病史5年，阵发性房颤间歇服用胺碘酮一年。于2002年8月19日因精神悲伤，突然意识丧失，晕倒在地，口唇发绀小便失禁，5min后送入我院急救中心，心电图示：尖端扭转型室速室颤，前、后反复电除颤10次，恢复窦性心律，频发房早，间歇短阵房颤，T波倒置，Q—T间期440-480ms，为防止再次室颤，于2002年9月7日安置单腔起博复律除颤器(ICD)，     

平阳霉素碘油乳剂选择性子宫动脉栓塞治疗症状性子宫肌瘤

目的：评价平阳霉素碘油乳剂(Pinyangrnyein lipiodol emulsion，PEE)选择性子宫动脉栓塞治疗症状性子宫肌瘤的疗效和副作用。方法：采用Seldinger方法作选择性子言动脉栓塞治疗15例子宫肌瘤患者。结果：插管栓塞成功率100％，随访1-6个月。B超示术后随访1个月肌瘤体积平均缩小25％。随访6个月，5例肌瘤消失，10例肌瘤体积平均缩小68％，并均伴有月经量的明显减少。结论：PLE选择性子宫动脉栓塞为非手术治疗症状性子宫肌瘤的较好方法。     

CT增强碘造影剂致过敏性休克1例

为增加病变组织与正常组织显示密度的差别以明确诊断,在CT检查中常使用造影剂作增强检查。现报道1例因碘造影剂增强所致的过敏性休克。     

12例重度急性有机磷农药中毒抢救的临床分析

目的对12例重度AOPP抢救成功临床经验分析。方法急救方案：①彻底洗胃机洗胃迅速清除毒物；②洗胃同时及早、足量、正确应用特效解毒剂(阿托品及碘解磷定)；③对症及支持治疗。结果12例中无1例发生“反跳“现象，均痊愈出院。结论重度AOPP抢救成功的急救措施是及早洗胃机洗胃，同时正确应用特效解毒剂及内科综性治疗。