Solitary calcaneal bone cyst in children]

The author presents results of treatment 10 children with calcaneal bone cyst. The mean age in the time of diagnosis was 13.5 years (10-18 years). The mean follow-up was 23.7 months (12-48 months). 4 children complained of heel pain; the rest were asymptomatic. In one child the cyst was large, filled nearly all bone. The rest were typically localized in the antero-middle part of the calcaneus. Steroid injection in one patient failed. All the patient were treated with curettage and bone grafting. The results were good--all the cysts healed. Curretage and bone grafting is indicated in the cases when cyst is large (more than half of the bone), when is localized in the posterior weight-bearing part of the calcaneus, when is painful or the radiograph is not typical.     

纵向挤压肱动脉采集动脉血气分析

目的探讨纵向挤压肱动脉采集血气分析标本的效果。方法将68例患者随机分为常规组和观察组各34例,常规组按常规操作采取血标本;观察组用左手示指指尖在肱动脉搏动最强处向下按压做一压痕;常规消毒后,左手示指指尖放于压痕处,中指并列放于示指旁,两手指沿血管走形向桡侧滑行触摸血管侧壁．向尺侧推压血管,至血管不能移动;然后中指加压按压血管,示指指腹抬起能感到血管波动即可;右手持一次性动脉血气针在压痕处进针抽取血标本,后续处理同常规组。采集右上肢时两手指先向尺侧滑行．再向桡侧推压血管,其他操作程序同左上肢。结果观察组一针穿刺成功率及总穿刺成功率显著高于常规组（P〈0．05,P〈0．01）。结论纵向挤压肱动脉采集动脉血气分析标本,有利于提高穿刺成功率。     

Herniated nucleus pulposus in isthmic spondylolisthesis: higher incidence of foraminal and extraforaminal types

Background  

The purpose of this study was to evaluate the pattern of disc herniation and to investigate the associated symptoms in cases of isthmic spondylolisthesis. It is well known that the pathogenesis of degenerative spondylolisthesis associates with disc degeneration, followed by facet laxity and ligamentum flavum hypertrophy, which result in severe spinal canal stenosis. But isthmic spondylolisthesis is known to have a different pathogenesis. In isthmic spondylolisthesis, pseudodisc bulging is easily identified, and canal stenosis is comparatively rare. Therefore, we propose that isthmic spondylolisthesis has a different pattern of disc herniation from degenerative spondylolisthesis. We studied the type, incidence of disc herniation and clinical symptoms related to isthmic spondylolisthesis.     

Heart rate variability is an indicator for intradialytic hypotension among chronic hemodialysis patients

Background

Intradialytic hypotension (IDH) carries adverse impact. Heart rate variability (HRV) represents autonomic cardiac regulation which influences intradialytic blood pressure. We aimed to evaluate the association between IDH and HRV.

Methods

This prospective study was carried out in a teaching hospital in Taiwan from June to August 2010. Adult patients on chronic hemodialysis without active medical conditions were enrolled and received HRV measurements for 4 times (before and during an index hemodialysis session). Patients were categorized by the changes of systolic blood pressure during the index hemodialysis into Group 1 (elevation >20 mmHg), Group 2 (decrease >20 mmHg), and Group 3 (others). Then we compared HRV indices among the three groups, and determined the indicators for IDH.

Results

One hundred and seventy-one patients (96 women, mean age 64.9 years) were enrolled and categorized into Group 1 (n = 47, 27.5 %), Group 2 (n = 45, 26.3 %) and Group 3 (n = 79, 46.2 %). Comparing with Group 1 and/or Group 3, Group 2 had significantly higher blood pressure at hemodialysis initiation (most p < 0.001) and statistically lower levels of HRV indices including variance, total power, very low-frequency, low-frequency and high-frequency since the middle phase of the hemodialysis. By logistic regression method, higher systemic blood pressure [odds ratio (OR) 1.048; p < 0.001], heart rate (OR 1.093; p = 0.021), low-frequency/high-frequency ratio (OR 1.715; p = 0.022), as well as lower variance (OR 0.639; p = 0.048) at hemodialysis initiation were independently associated with intradialytic blood pressure changes.

Conclusions

HRV is a useful indicator for IDH among hemodialysis patients.

     

凋亡抑制基因livin在食管癌中的表达

目的:探讨凋亡抑制蛋白livin在食管癌组织中的表达及其与食管癌临床病理的相关性。方法:采用RT-PCR结合银染技术检测食管癌组织中livin-α mRNA和livin-β mRNA的表达。结果:36例食管癌组织中livin表达阳性率为50%,其表达与癌组织浸润深度和淋巴结转移有关(P<0.05),而与癌组织分化程度无关(P>0.05)。18例癌旁正常食管组织中livin低表达,阳性率为5.6%,与食管癌组织比较差异十分显著(P<0.01)。结论:livin在食管癌组织中异常表达,有望成为食管癌诊断和基因治疗的新靶点。     

Pirh2 shRNA增强肺腺癌细胞A549对顺铂敏感性的研究

目的 观察短发夹状RNA沉默泛素连接酶pirh2(P53 induced RING-H2 protein)基因表达后,肺腺癌细胞A549对顺铂敏感性及肺耐药蛋白(lung resistance-related protein, LRP)表达的变化.方法 构建靶向pirh2基因的短发夹状RNA(psiRNA-Pirh2)及阴性对照RNA(psiRNA-Con),并转染A549细胞,实时定量PCR和免疫印迹法检测A549细胞中pirh2基因和蛋白的表达变化.设立顺铂组(5 μg/ml)、psiRNA-Pirh2转染组和顺铂(5 μg/ml) psiRNA-Pirh2组,CCK-8法检测A549细胞增殖能力,流式细胞术检测细胞周期,免疫印迹法检测肺耐药蛋白的表达,以正常A549细胞为对照.结果 psiRNA-Pirh2特异性抑制了A549细胞pirh2 mRNA和蛋白质的表达(均P＜0.05).顺铂及psiRNA-Pirh2组A549细胞增殖能力分别为正常对照组的(46.82± 6.14)%和(37.45±6.83)%,均P＜0.05,但均高于二者联合组[(28.24±6.49)%],且联合组细胞凋亡率最高,达(19.8±5.1)%,S期细胞最少,为(15.5±1.6)%(P＜0.05).顺铂处理组A549细胞LRP表达较正常对照组增强(P＜0.05),但联用psiRNA-Pirh2后,LRP蛋白水平有所下降(P＜0.05).结论 靶向pirh2的shRNA可特异性降低A549细胞中pirh2的表达,抑制A549细胞增殖,使其阻滞在G2/M期,诱导凋亡,下调肺耐药蛋白的表达并增强其对顺铂的化疗敏感性.     

EGb对MPP^＋诱导的PC12细胞凋亡的影响

目的 观察EGb对MPP^ 诱导的PC12细胞凋亡的细胞。方法 MPP^ 诱导PC12细胞凋亡,AO／EB染色,荧光显微镜下观察凋亡细胞。结果 EGb50、100μg/ml在6h、12h、24h可抑制细胞凋亡,而EGb25μg/ml则无效。结论 EGb在6h、12h、24h时呈剂量依赖性降低细胞凋亡率,提示EGb有可能通过抑制DA能神经元凋亡而相对增加DA含量。     

中西药治疗流行性腮腺炎136例疗效观察

将136例流行性腮腺炎患儿随机分成3组,分别用三氮唑核苷注射液、清开灵注射液和同时使用上述两种药物的方法治疗,结果：3组分别治愈21,24,40例,有效15,12,4例,无效9,9,2例,总有效率分别为80％,80％,95.7％,表明联合用药组疗效优于单纯中药组或西药组。     

血清抵抗素水平与2型糖尿病患者血管并发症的相关性研究

目的:探讨血清抵抗素水平与2型糖尿病(T2DM)患者血管并发症的关系,及其可能在T2DM血管并发症中所起的作用。方法:选取40例T2DM患者,同时选取20例健康人作为对照组。受试者空腹采血,测定血清抵抗素、一氧化氮(NO)、血管性血友病因子(vWF);行OGTT并测定C肽、胰岛素及生化检查,同时测血压、身高、体重、腰围、体重指数、胰岛素敏感指数、胰岛素抵抗指数等。结果:T2DM患者血清抵抗素、vWF水平均高于正常对照组;NO低于正常对照组。T2DM组抵抗素与vWF呈正相关;与NO呈负相关。结论:T2DM患者血清抵抗素水平增高,且与血管内皮功能相关指标呈正或负相关,提示抵抗素可能与T2DM血管并发症的发生有关,是预测血管并发症的有价值的指标。