股疝开放式前入路修补的临床疗效

目的总结开放式腹膜前修补40例股疝的手术效果。 方法回顾性分析2014年5月至2016年12月,赣州市人民医院接受手术40例股疝的临床资料,其中急诊股疝组27例,择期股疝组13例。 结果择期组中疝囊内容物8例为网膜,4例为积液,1例为小肠;急诊组中内容物为肠管的26例,1例为单纯嵌顿网膜。13例择期组和13例急诊组患者进行了经腹膜前使用补片修补,另14例急诊组患者进行了Mcvay法组织的缝合修补;急诊组中有6例进行了肠切除肠吻合。择期组中早期并发症为3例次,急诊组为24例次,2组比较差异有统计学意义（P<0.05）;2组的平均住院时间分别为（6.615±1.321）d和（7.777±2.206）d,平均手术时间分别（77.692±22.695）min和（94.211±13.927）min,2组比较差异均有统计学意义（P均<0.05）;随访过程中26例补片修补的患者均未发生补片感染;补片修补的无复发病例,急诊组缝合修补的出现1例复发。 结论开放式腹膜前无张力补片疝修补术是一种安全和可供选择的治疗择期股疝和部分急诊股疝的手术方式;但急诊手术的早期并发症较择期手术多,建议尽可能在择期状态下对股疝进行手术治疗。     

The value of bone scintigraphy on the determination of the full extent of tumor involvement in jaw bones

Objective： To prospectively investigate the value of bone scintigraphy on determining the full extent of tumor involvement in jaw bones and to assess the presence of metastases. Methods： This study had local ethical committee approval, and all patients gave written informed consent. Thirty seven consecutive patients with primary malignant tumor in jaw bones were recruited for the study. Bone scintigraphy was performed in all patients before surgery to measure the full extent of bony involvement, which was compared with histologic findings. Results： Whole body scan revealed one case with multiple bony metastases. Resection specimens of 36 bone neoplasms were pathologically analyzed to identify type and size of each tumor. The lengths of the tumor involvement in jaw bones defined by bone scintigraphy and pathology were 5.62 ± 1.58 cm, 4.48 ± 1.57 cm, respectively （P 〈 0.05）. The tumor negative margins from removed specimens according to bone scintigraphy were pathologically confirmed. With histologic findings as the standard of reference, the accuracy of bone scintigraphy was 100% （36 of 36 patients） in determining the full extent of tumor involvement in jaw bones. Conclusion： Bone scintigraphy tends to offer specific guidelines in determining the appropriate extent of bone resection while entirely clearing the tumor cells and preserving functions whenever possible and in establishing the bony metastases.     

壳聚糖凝胶对大鼠腹膜粘连的预防作用

目的:探讨壳聚糖凝胶对三种不同原因所致的大鼠腹膜粘连的预防作用.方法:144只SD大鼠,随机分成创伤致粘连组(A组)、滑石粉致粘连组(B组)及结扎血管致粘连组(C组).各组分别用相应的致粘连方法来处理大鼠蚓突盲端,再将每组大鼠分成对照组和实验组,对照组大鼠直接关腹,实验组用壳聚糖凝胶均匀涂布于经处理的蚓突浆膜面,然后关腹.处理后2 w、4 w再次打开腹腔,肉眼评定蚓突盲端同其周围组织的粘连程度,并取蚓突盲端组织行病理组织学检查.结果:①粘连评定:术后2 w和4 w,A组和C组中实验组的粘连程度均分别显著低于对照组(P<0.05或P<0.01),而B组中的实验组和对照组间均无明显差异(P>0.05).②病理改变:A组处理侧浆膜面以纤维组织增生为主,而C组蚓突全层均有纤维组织增生,以浆膜层为重.B组处理侧浆膜面有大量异物巨细胞反应及肉芽肿形成,并伴有程度不同的纤维组织增生.结论:壳聚糖凝胶对创伤及缺血所致的腹膜粘连有明显的预防作用,而对异物所致的腹膜粘连作用则不明显.     

脊柱尤文氏肉瘤CT和MR的表现

目的 探讨脊柱尤文氏肉瘤 (Ewing’s Sarcoma,ES)的CT和MRI表现。方法 回顾性分析经病理证实的7例脊柱ES的影像学资料。 结果 病变累及颈椎、胸椎各3例、腰椎1例。CT检查：2例椎体和/或附件溶骨性骨质破坏,3例椎管内外软组织肿块。MRI检查：7例均表现椎管内外肿物,瘤体T1WI表现为等、低或稍高信号, 6例T2WI表现为不均匀高信号,增强后不均匀强化;1例T2WI为均匀稍高信号,增强后均匀强化。免疫组织化学：肿瘤均表达CD99阳性。 结论 青少年患者进行性发展的椎管内外软组织肿块伴脊柱溶骨性骨质破坏,提示脊柱ES可能。脊柱ES需结合病理学及免疫组化确诊。CT、MRI综合使用为脊柱ES诊断、治疗、疗效评价及预后提供帮助。     

Effects of pulsed electromagnetic field frequencies on the osteogenic differentiation of human mesenchymal stem cells

The purpose of this study was to evaluate the effect of different frequencies of pulsed electromagnetic fields on the osteogenic differentiation of human mesenchymal stem cells. Third-generation human mesenchymal stem cells were irradiated with different frequencies of pulsed electromagnetic fields, including 5, 25, 50, 75, 100, and 150 Hz, with a field intensity of 1.1 mT, for 30 minutes per day for 21 days. Changes in human mesenchymal stem cell morphology were observed using phase contrast microscopy. Alkaline phosphatase activity and osteocalcin expression were also determined to evaluate human mesenchymal stem cell osteogenic differentiation.Different effects were observed on human mesenchymal stem cell osteoblast induction following exposure to different pulsed electromagnetic field frequencies. Levels of human mesenchymal stem cell differentiation increased when the pulsed electromagnetic field frequency was increased from 5 hz to 50 hz, but the effect was weaker when the pulsed electromagnetic field frequency was increased from 50 Hz to 150 hz. The most significant effect on human mesenchymal stem cell differentiation was observed at of 50 hz.The results of the current study show that pulsed electromagnetic field frequency is an important factor with regard to the induction of human mesenchymal stem cell differentiation. Furthermore, a pulsed electromagnetic field frequency of 50 Hz was the most effective at inducing human mesenchymal stem cell osteoblast differentiation in vitro.     

结直肠癌奥沙利铂耐药关键基因的生物信息学分析及意义

目的筛选与结直肠癌（CRC）中奥沙利铂（OXA）耐药性相关的基因和通路。 方法首先通过GEO数据库分析GSE76092的基因表达谱,筛选出CRC的OXA敏感和OXA耐药细胞系之间的差异表达基因（DEGs）。利用DAVID数据库进行基因本体论（Go）分析和京都基因和基因组百科全书（KEGG）通路分析。通过STRING工具构建蛋白质-蛋白质相互作用（PPI）网络。经MCODE插件选择关键基因,并利用GEPIA工具进行生存分析。最后使用miRWalk数据库预测相关的miRNA。 结果通过数据分析总共获得474个DEGs,并筛选了相关的信号通路和PPI网络。筛选出15个中心基因,其中7个显著参与NF-κB和趋化因子信号等通路。对7个关键基因的生存分析表明,CXCL8、IL-1β和PTGS2表达水平与CRC患者的总体生存相关。预测hsa-miR-6893-5p、hsa-miR-7851-3p和hsa-miR-96-3p是OXA耐药相关核心miRNA。 结论基于生物信息学筛选出来的OXA耐药关键基因和信号通路,为CRC中OXA耐药的潜在机制提供更深入的了解。     

Performance of sequential organ failure assessment, logistic organ dysfunction and multiple organ dysfunction score in severe sepsis within Chinese intensive care units

This study assessed the performance of Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score in outcome prediction in severe sepsis. A total of 528 consecutive patients with a diagnosis of severe sepsis were enrolled from two surgical intensive care units of university hospitals in China. Clinical and laboratory data of patients were collected and admission and maximum values of each scoring system were calculated. Areas under the receiver operating characteristic curve, which were used to assess discrimination, were 0.80, 0.83 and 0.74 for admission Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score respectively, and 0.91, 0.93 and 0.86 for corresponding maximum values respectively. Calibration assessed by the Hosmer-Lemeshow statistic was better with admission (chi2 = 18.2) and maximum Logistic Organ Dysfunction Score (chi2 = 19.6) than with admission (chi2 = 98.1) and maximum Multiple Organ Dysfunction Score (chi2 = 30.9). Brier Scores, indicating the overall performance of the scores, were 0.18, 0.17 and 0.22 for admission Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score respectively, and 0.12, 0.10 and 0.15 for their maximum counterparts respectively. This study found good performance of both admission Sequential Organ Failure Assessment and Logistic Organ Dysfunction Score in severe sepsis, and a slightly weaker performance of admission Multiple Organ Dysfunction Score. Since poor calibration was observed in Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score, we suggest further study of customisation of these scores in critical illness with severe sepsis.     

Effect of Intra‐wound Vancomycin for Spinal Surgery: A Systematic Review and Meta‐analysis

Intra‐site prophylactic vancomycin in spine surgery is an effective method of decreasing the incidence of postsurgical wound infection. However, there are differences in the prophylactic programs used for various spinal surgeries. Thus, this systematic review and meta‐analysis aimed to evaluate the effectiveness of using intra‐wound vancomycin during spinal surgery and to explore the effects of dose‐dependence and the method of administration in a subgroup analysis. A total of 628 citations or studies were searched in PubMed, Ovid, Web of Science, and Google Scholar that were published before August 2016 with the terms “local vancomycin”, “intra‐wound vancomycin”, “intraoperative vancomycin”, “intra‐site vancomycin”, “topical vancomycin”, “spine surgery”, and “spinal surgery”. Finally, 19 retrospective cohort studies and one prospective case study were eligible for inclusion in the systematic review and meta‐analysis. The odds of developing postsurgical wound infection without prophylactic local vancomycin use were 2.83‐fold higher than the odds of experiencing wound infection with the use of intra‐wound vancomycin (95% confidence interval, 2.03–3.95; P = 0.083; I² = 32.2%). The subgroup analysis including the dosage and the method of administration, revealed different results compared to previous research. The value of I² in the 1‐g group was 27.2%, which was much lower than in the 2‐g group (I² = 57.6%). At the same time, the value of I² was 0.0% (P = 0.792, OR = 2.70) when vancomycin powder was directly sprinkled into all layers of the wound. However, there is high heterogenicity (I² = 60.0%, P = 0.007, OR = 2.83) when vancomycin powder is not exposed to the bone graft and instrumentation. There are differences found with the method of local application of vancomycin for reducing postoperative wounds and further studies are necessary, including investigations focusing on the dose‐dependent effects during spinal or the topical pharmacokinetic and other orthopaedic surgeries.     

不同麻醉方法对开胸手术患者红细胞糖代谢限速酶活性的影响

目的 探讨开胸手术患者红细胞内糖代谢限速酶活性的变化及不同麻醉方法对其的影响。方法 48例ASAI～Ⅱ级择期开胸手术患者,按麻醉方式随机分成三组,每组16例。Ⅰ组采用地氟醚吸入为主的全身麻醉;Ⅱ组采用异氟醚吸入为主的全身麻醉;Ⅲ组采用异氟醚吸入联合连续硬膜外阻滞。于麻醉前、手术90min、术后60min及术后第1、2天共五个时点分别测定血糖浓度及红细胞6-磷酸葡萄糖脱氢酶(G-6PD)、磷酸果糖激酶(PFK)和醛糖还原酶(AR)活性。结果 与麻醉前比较,三组患者血糖浓度自术中90min开始,至术后第2天升高显著(P<0.05);Ⅰ、Ⅱ两组术后第1天PFK活性显著下降(P<0.05),G-6PD、AR活性显著升高(P<0.05),而Ⅲ组各时点红细胞内糖代谢限速酶活性的变化与麻醉前比较均无统计学差异(P>0.05),且Ⅲ组术后第1天PFK值远低于Ⅰ组相应值。结论 开胸手术中、手术后存在明显的高血糖反应。术后第1天,红细胞内会出现糖酵解途径受抑制,磷酸戊糖途径、多元醇通路相应活跃现象。采用异氟醚吸入联合硬膜外阻滞可在一定程度上调控手术创伤对红细胞糖代谢的影响。