尿碘与甲状腺疾病的相关性

  目的   探究甲状腺疾病与尿碘等指标的相关性及甲状腺疾病发生的危险因素。   方法   以2018年1月至12月于昆明市第一人民医院甘美医院内分泌科体检和就诊的患者共266例，将其分为有甲状腺疾病组（207例）和非甲状腺疾病组（59例），并测定尿碘、促甲状腺激素（TSH）、游离三碘甲状腺原氨酸（FT3）、游离甲状素（FT4）、三碘甲状腺原氨酸（T3）、四碘甲状腺原氨酸（T4）、甲状腺过氧化物酶抗体（TPOAb）、甲状腺球蛋白抗体（TGAb）水平，应用彩色多普勒超声对研究对象的甲状腺进行检测。采用SPSS17.0软件进行t检验、秩和检验、χ2检验，甲状腺疾病的患病影响因素采用多因素Logistic回归分析。   结果   （1）甲状腺疾病组的尿碘水平中位数（143.30 μug/L）低于非甲状腺疾病组（178.30 μg/L），差异有统计学意义（P < 0.05）；（2）多因素Logistic回归分析结果显示，年龄（OR 1.140、95%CI:1.033-1.257、P = 0.009）、尿碘（OR 0.983、95%CI:0.971-0.996、P = 0.008）及TPOAb（OR 1.018、95%CI:0.979-1.059、P = 0.020）为甲状腺疾病的独立危险因素。   结论   低水平尿碘与甲状腺疾病的患病有关，尿碘、TPOAb和年龄是甲状腺疾病的独立危险因素。     

基于AHP-熵权法优选黑顺片炮制工艺及生物碱类成分动态变化研究

目的 采用主观评价层次分析法（analytic hierarchy process，AHP）-熵权法优选黑顺片炮制工艺，探究炮制过程中生物碱类成分动态变化规律。方法 采用外观性状、水溶性浸出物、苯甲酰新乌头原碱含量、苯甲酰乌头原碱含量、苯甲酰次乌头原碱含量、双酯型生物碱总量作为评价指标，基于单因素考察结果，以煮制时间、水漂次数、蒸制时间、干燥温度为主要因素建立正交实验，通过AHP-熵权法优选黑顺片最佳炮制工艺参数。采用HPLC法对各炮制环节的附子进行含量测定，分析比较6种酯型生物碱的含量变化。结果 在质量分数20%以上的胆巴溶液中浸泡能达到防腐的目的，且浸泡20d以上附子的质量相对稳定。黑顺片炮制的最佳工艺条件为煮制时间8min，水漂次数4次，蒸制时间3h，干燥温度60℃；炮制过程中双酯型生物碱总量逐渐降低，泡胆和漂洗过程单酯型生物碱含量降低，煮制和蒸制过程单酯型生物碱含量升高。结论 实验优化所得的黑顺片炮制工艺合理、稳定、可行，炮制过程中各环节对酯型生物碱类成分均有不同程度的影响，可为进一步探讨黑顺片的现代炮制方法提供参考。     

An Embryonic Diapause-like Adaptation with Suppressed Myc Activity Enables Tumor Treatment Persistence

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Compressive Properties and Energy Absorption Characteristics of Extruded Mg-Al-Ca-Mn Alloy at Various High Strain Rates

This paper is focused on the mechanical properties and the energy absorption characteristics of the extruded Mg-Al-Ca-Mn alloy in different compression directions under high strain rate compression. Compressive characterization of the alloy was conducted from the high strain rate (HSR) test by using a Split Hopkinson Pressure Bar (SHPB). Results show that the investigated alloy exhibits a strong strain rate sensitivity. With the rise of strain rate, the compressive strength is increased significantly, and the deformation ability also improves. When compressed along the extrusion direction, as the strain rate increases, the total absorbed energy E, the crush force efficiency (CFE), and the specific energy absorption SEA of Mg-Al-Ca-Mn alloy are all greatly improved as compared with those obtained along other compression directions.     

多媒体课件在妇产科学示教课中的应用探索

使用多媒体课件进行妇产科学示教课程教学，与传统教学手段相比有着不可替代的优势，有助于培养全面发展的医学人才，能够显著提高妇产科学示教课程教学效果。     

巨细胞病毒pp65抗原检测的新方法

目的传统的检测CMVpp65抗原的方法是间接免疫荧光,操作麻烦,步骤较多,整个实验需要6个多小时,而且只能定性。需要寻找一种简便的可以定量的方法来检测CMVpp65抗原阳性细胞。因此我们设计了流式的方法来检测CMVpp65抗原阳性细胞。方法我们用间接免疫荧光试剂盒中的一抗和购自invitrogen公司的二抗进行了流式标记移植病人外周血中的WBC,操作步骤明显简便了,只需不到2 h就可完成检测,而且可以定量检测CMVpp65抗原阳性细胞。同时我们用荧光定量PCR检测病人尿中的CMV基因的拷贝数。结果流式检测阳性率高的标本,用间接免疫荧光方法检测也为阳性,同时流式检测强阳性的病人尿用荧光定量PCR检测到CMV基因,表明病人处于CMV病毒血症。结论我们用间接免疫荧光试剂盒中的一抗和购自invitrogen公司的二抗进行流式标记,成功检测了移植病人的CMVpp65抗原阳性细胞的百分比,新方法可以定量,与荧光定量PCR方法检测病人尿中的CMV基因的结果符合率较高,可以推广应用。     

Cruciferous vegetable consumption and gastric cancer risk: A meta‐analysis of epidemiological studies

The relationship between consumption of cruciferous vegetables (CV) and risk of gastric cancer has been investigated by many studies, but remains controversial. We carried out a meta‐analysis to summarize available evidence from epidemiological studies on this point. Relevant published reports of CV intake and gastric cancer were identified using MEDLINE (PubMed), EMBASE, and Web of Science databases through to the end of September 2012. We pooled the relative risk from individual studies using a fixed‐ or random‐effects model and carried out heterogeneity and publication bias analyses. Sixteen case–control and six prospective studies were included in our analysis. When all studies were pooled, we yielded a significantly inverse association between CV (relative risk = 0.81; 95% confidence interval, 0.75–0.88) intake and gastric cancer risk, with little heterogeneity (Q = 27.27, P = 0.292, I² = 12.0%). Specific analysis for cabbage intake yielded similar result. When separately analyzed, case–control studies of CV intake yielded significant results and the results of prospective studies showed borderline statistical significance. Moreover, significant results were consistent for high‐quality studies, for North American, European, and Asian studies, for studies on males, and for studies on non‐cardia gastric cancer. Findings from this meta‐analysis provide evidence that high intake of CV was inversely associated with the risk of gastric cancer and non‐cardia gastric cancer in humans. Further studies on other specific CV, food preparation methods, and stratified results by anatomic cancer site and histological type should be extended in the future.     

第三届北京口腔种植长城论坛暨口腔种植联盟工作会议纪要

第三届北京口腔种植长城论坛暨口腔种植联盟联席工作会于2020年11月在北京召开,来自长城沿线15个省市的口腔种植领域的专家和代表120多人参加了会议。会议就当前中国口腔种植发展的热点问题进行了探讨交流,对今后发展方向形成了共识。论坛将以长城为基线,传播先进的口腔种植理念和技术,带动口腔种植行业发展。围绕"前牙骨增量后的种植修复远期效果"大会主题进行的学术研讨,收到很好的效果。会议论证了刘洪臣教授主持的《口腔种植牙的保健与维护指南》并广泛征求了意见。北京口腔医学会第四届口腔种植专业委员会第四次常务委员会也同期召开,对2020年口腔种植专委会的工作进行总结,通报了新增青年委员,通过了专委会工作制度并讨论了2021年专委会的工作规划和换届工作。