氧化亚氮吸入清醒镇静在拔牙术中的止痛作用

实验组选取无笑气吸入禁忌证拔牙患者112例,随机分为60%笑气组61例,40%笑气组51例,在笑气吸入清醒镇静辅以局麻下拔牙;对照组53例,只在局麻下拨牙.结果表明:60%笑气组与40%笑气组的VAS疼痛评分大多较低,与对照组相比,在统计学上有非常显著性差异(P<0.001).提示笑气具有一定的镇静、止痛作用,联合局麻应用可以较好地控制患者焦虑与疼痛的复合状态.     

CAD/CAM技术Vita MarkⅡ全瓷嵌体充填治疗磨牙Ⅱ类洞缺损患者的效果

目的 探究计算机辅助设计/制造(CAD/CAM)技术Vita MarkⅡ全瓷嵌体充填治疗磨牙Ⅱ类洞缺损患者的效果。方法 选取我院2016年11月～2019年8月磨牙Ⅱ类洞缺损患者40例,随机数字表法分为对照组(n=20,20颗牙)与观察组(n=20,20颗牙)。对照组给予复合树脂嵌体修复治疗,观察组给予CAD/CAM技术Vita MarkⅡ全瓷嵌体充填治疗。修复3个月,评估两组修复成功率、牙周相关指标[牙菌斑指数(PIL)、龈沟出血指数(SBI)、牙龈指数(GI)]、微渗漏程度。结果 两组修复成功率无显著差异(P＞0.05);修复3个月观察组PIL、SBI、GI低于对照组(P＜0.05);观察组龈壁、轴壁微渗漏程度低于对照组(P＜0.05)。结论 CAD/CAM技术Vita MarkⅡ全瓷嵌体充填治疗磨牙Ⅱ类洞缺损患者,可保护牙周健康,降低龈壁、轴壁微渗漏程度。     

Human disease cost network analysis

Diseases can be interconnected. In the recent years, there has been a surge of multidisease studies. Among them, HDN (human disease network) analysis takes a system perspective, examines the interconnections among diseases along with their individual properties, and has demonstrated great potential. Most of the existing HDN analyses are based on either molecular information (which may be unreliable and have limited clinical relevance) or phenotypic measures (which may have limited implications for disease management and not directly reflect disease severity). In this study, we take advantage of the uniquely valuable Taiwan NHIRD (National Health Insurance Research Database) data and conduct an HDN analysis of disease treatment cost. Complementing the existing literature, treatment cost can serve as a surrogate of disease severity (and hence be clinically highly relevant) and also directly describe the financial burden of illness (and hence be uniquely informative for disease management). With inpatient and outpatient treatment data on close to 1 million randomly selected subjects and collected during the period of 2000 to 2013, the human disease cost network is constructed using a novel copula-based approach and the weighted correlation-based network construction technique. Extensive analysis is conducted, and the results are found to be biomedically sensible.     

Deciduoid mesothelioma: a report of 5 cases and literature review

Deciduoid mesothelioma was first described in young females and in the peritoneum, which led to the suggestion that deciduoid mesothelioma was a distinct subtype with specific clinical and pathologic features. Later reports, however, have shown that this type of mesothelioma may also occur in elderly people and in the pleura. Cases reported in the literature so far are limited, and the disease is not well defined. The authors report the histologic, immunohistochemical, ultrastructural, and clinical findings of 5 cases of deciduoid mesothelioma, and review the literature reports. The results demonstrate that the presence of numerous cytoplasmic intermediate filaments, either dispersed or bundled, appear to be the likely ultrastructural basis for the deciduoid histologic appearance. Twenty-one cases of deciduoid mesothelioma were identified in the literature. Analyses of these 21 cases and the authors' 5 cases showed an age range of 13-78 years (median 53 years) and a slight female predominance (female to male ratio of 1.4:1). Fourteen of 26 cases (54%) occurred in the peritoneum. Seven of 20 patients (35%) had a documented history of asbestos exposure. Fifteen of 20 patients died, with a mean survival time of 7.33 months (range 1-21 months). Five of 20 patients were alive at a follow-up time of 8 months to 5 years. These findings suggest that the so-called deciduoid mesothelioma has some clinical and pathologic features that are dissimilar to mesothelioma in general. Whether it truly represents a pathogenetically distinct variant or merely an expansion of the morphologic spectrum awaits further studies.     

五年制高职医技专业学生创业意识调查研究

以南京卫生高等职业技术学校为例,探讨五年制高职医技专业学生创业意识现状及影响因素,为提升五年制高职医技专业学生创业意识提供参考.     

Total synthesis of landomycins Q and R and related core structures for exploration of the cytotoxicity and antibacterial properties

Herein, we report the total synthesis of landomycins Q and R as well as the aglycone core, namely anhydrolandomycinone and a related core analogue. The synthesis features an acetate-assisted arylation method for construction of the hindered B-ring in the core component and a one-pot aromatization–deiodination–denbenzylation procedure to streamline the global functional and protecting group manuipulation. Subsequent cytotoxicity and antibacterial studies revealed that the landomycin R is a potential antibacterial agent against methicillin-resistant Staphylococcus aureus.

Herein, we report the total synthesis of landomycins Q and R as well as the aglycone core, namely anhydrolandomycinone and a related core analogue.     

Identification of Endoglin as an epigenetically regulated tumour-suppressor gene in lung cancer

Background:

The transforming growth factor-beta (TGF- β) pathway has been implicated in proliferation, migration and invasion of various cancers. Endoglin is a TGF-β accessory receptor that modulates signalling. We identified Endoglin as an epigenetically silenced tumour-suppressor gene in lung cancer by means of a genome-wide screening approach, then sought to characterise its effect on lung cancer progression.

Methods:

Methylation microarray and RNA sequencing were carried out on lung cancer cell lines. Epigenetic silencing of Endoglin was confirmed by methylation and expression analyses. An expression vector and a 20-gene expression panel were used to evaluate Endoglin function. Pyrosequencing was carried out on two independent cohorts comprising 112 and 202 NSCLC cases, respectively, and the impact of Endoglin methylation on overall survival (OS) was evaluated.

Results:

Methylation in the promoter region resulted in silencing of Endoglin, which could be reactivated by demethylation. Increased invasion coupled with altered EMT marker expression was observed in cell lines with an epithelial-like, but not those with a mesenchymal-like, profile when Endoglin was absent. Methylation was associated with decreased OS in stage I but not in stages II–III disease.

Conclusions:

We show that Endoglin is a common target of epigenetic silencing in lung cancer. We reveal a link between Endoglin silencing and EMT progression that might be associated with decreased survival in stage I disease.     

7.0T磁共振T2*-mapping在实验性自身免疫性脑脊髓炎脊髓病变中的应用

目的 应用超高场强MR T2^*-mapping序列定量评估实验性自身免疫性脑脊髓炎(EAE)动物模型的脊髓病变。方法 6~8周雌性C57BL/6小鼠,MOG_35-55诱导制备EAE模型10只(实验组),同龄健康对照组10只。在造模后第18天,分别对实验组和对照组脊髓行T2^*-mapping序列扫描,经后处理软件分析,比较实验组和对照组脊髓感兴趣区T2^*值的差异。结果 实验组第12天大鼠的体质量开始减轻,第14天神经学评分逐步增加。对照组体质量无明显减轻。MR T2^*加权像显示实验组脊髓内病灶呈不规则点片状稍高信号;对照组脊髓呈均匀等信号。T2^*值实验组[(12.66±1.78) ms]和对照组[(17.80±2.06)ms]差异有统计学意义(P<0.001),实验组各评分T2^*值之间差异无统计学意义(P>0.05)。结论 超高场强MR T2^*-mapping序列能够清晰显示小鼠脊髓病灶,并且可对病灶组织内铁含量进行定量测定,为EAE模型脊髓病变的无创检查提供新方法。