Utility of Tissue Similarity Maps Based on Relative Cerebral Blood Volume for Grading Gliomas as Validated by Histological Results

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N-三甲基壳聚糖对促进阿昔洛韦滴眼液眼部滞留性的体内外考察

目的对不同季铵化程度(DQ)的N-三甲基壳聚糖(TMC)促进阿昔洛韦(ACV)滴眼液眼部滞留性进行考察。方法将浓度为0.5%,DQ分别为20%、40%及60%的TMC(TMC20,TMC40,TMC60)加入ACV滴眼液中;以同浓度壳聚糖(CS)ACV滴眼液为阳性对照,以普通ACV滴眼液为阴性对照,选用家兔为实验动物,采用悬挂泡技术和束缚泡技术进行离体眼球表面接触角及解吸附动力学进行研究,同时在各种ACV滴眼液中分别加入0.05%的荧光素钠为示踪剂,在体研究各种ACV滴眼液在家兔眼部的滞留性。结果与普通ACV滴眼液相比,含CS及TMC的滴眼液在角膜表面的接触角明显降低,解吸时间及在体滞留时间明显延长(P<0.05);与同浓度的CS ACV阳性对照相比,TMC20促进滞留作用较弱,而TMC40作用差异无显著性(P>0.05),而TMC60的作用明显较强(P<0.05)结论 TMC可显著增加ACV的眼部滞留性,且与其DQ呈正相关。     

Mixed Reality Combined with Three‐Dimensional Printing Technology in Total Hip Arthroplasty: An Updated Review with a Preliminary Case Presentation

Three‐dimensional (3D) printing technology, virtual reality, and augmented reality technology have been used to help surgeons to complete complex total hip arthroplasty, while their respective shortcomings limit their further application. With the development of technology, mixed reality (MR) technology has been applied to improve the success rate of complicated hip arthroplasty because of its unique advantages. We presented a case of a 59‐year‐old man with an intertrochanteric fracture in the left femur, who had received a prior left hip fusion. After admission to our hospital, a left total hip arthroplasty was performed on the patient using a combination of MR technology and 3D printing technology. Before surgery, 3D reconstruction of a certain bony landmark exposed in the surgical area was first performed. Then a veneer part was designed according to the bony landmark and connected to a reference registration landmark outside the body through a connecting rod. After that, the series of parts were made into a holistic reference registration instrument using 3D printing technology, and the patient's data for bone and surrounding tissue, along with digital 3D information of the reference registration instrument, were imported into the head‐mounted display (HMD). During the operation, the disinfected reference registration instrument was installed on the selected bony landmark, and then the automatic real‐time registration was realized by HMD through recognizing the registration landmark on the reference registration instrument, whereby the patient's virtual bone and other anatomical structures were quickly and accurately superimposed on the real body of the patient. To the best of our knowledge, this is the first report to use MR combined with 3D printing technology in total hip arthroplasty.     

妊娠期高血压疾病早期肾损害的监测进展

妊娠妇女随着孕周的增加,其本身及胎儿代谢产物逐渐增多,加之循环血容量增加,使肾脏总体负荷加重,容易并发肾损害。妊娠期高血压疾病是妊娠期特有的疾病,其病理生理变化为全身小血管痉挛、内皮损伤及局部缺血;肾脏最先受累。严重的肾损害会导致较高的母儿患病率和病死率,而肾脏损害存在无症状阶段,通过筛查才能发现相对早期的肾损害。探索妊娠期高血压疾病早期肾损害敏感性指标,可早发现、早干预,从而减少不良产科结局。     

Characterization of membrane occupation and recognition nexus repeat containing 3, meiosis expressed gene 1 binding partner,in mouse male germ cells

Mammalian spermatogenesis is a well-organized process of cell development and differentiation. Meiosis expressed gene 1 (MEIG1) plays an essential role in the regulation of spermiogenesis. To explore potential mechanisms of MEIG1''s action, a yeast two-hybrid screen was conducted, and several potential binding partners were identified; one of them was membrane occupation and recognition nexus repeat containing 3 (MORN3). MORN3 mRNA is only abundant in mouse testis. In the testis, Morn3 mRNA is highly expressed in the spermiogenesis stage. Specific anti-MORN3 polyclonal antibody was generated against N-terminus of the full-length MORN3 protein, and MORN3 expression and localization was examined in vitro and in vivo. In transfected Chinese hamster ovary cells, the antibody specifically crossed-reacted the full-length MORN3 protein, and immunofluorescence staining revealed that MORN3 was localized throughout the cytoplasm. Among multiple mouse tissues, about 25 kDa protein, was identified only in the testis. The protein was highly expressed after day 20 of birth. Immunofluorescence staining on mixed testicular cells isolated from adult wild-type mice demonstrated that MORN3 was expressed in the acrosome in germ cells throughout spermiogenesis. The protein was also present in the manchette of elongating spermatids. The total MORN3 expression and acrosome localization were not changed in the Meig 1-deficient mice. However, its expression in manchette was dramatically reduced in the mutant mice. Our studies suggest that MORN3 is another regulator for spermatogenesis, probably together with MEIG1.     

尘肺病患者心理、社会支持状况调查及相关性研究

目的为了解尘肺病患者心理状况及社会支持对患者心理健康的影响,为对尘肺病患者建立干预措施提供技术支撑。方法采用SCL-90症状清单、社会支持量表对在全省尘肺病住院病人较多的3家医院进行尘肺病患者问卷调查。结果 208名尘肺病患者男性205人,女性3人。文化程度均为高中及以下;Ⅰ期尘肺148人,Ⅱ期尘肺41人,Ⅲ期尘肺19人;尘肺患者SCL-90症状清单总分为162.00±64.77,低于全国常模,差异有统计学意义(P0.05);不同分期、不同年齡段、不同病程尘肺病患者各组之间社会支持得分差异无统计学意义。结论尘肺病患者心理健康水平低于全国水平,社会支持各维度得分与SCL-90各因子得分呈负相关,建立尘肺病患者心理干预体系十分必要。     

封场生活垃圾填埋场好氧治理通风系统计算与应用

从质量守恒定律出发,以Buswell提出的垃圾好氧降解反应方程式为基础,建立了计算通风量的化学计量模型;以达西定律为基础,建立了计算通风压力的数学模型;并将其应用于某封场垃圾填埋场原位好氧治理工程的计算,验证了2个模型的合理性和准确性,可为生活垃圾填埋场好氧生物反应器工艺设计和设备选型提供理论数据参考。     

金水宝片联合依诺肝素对维持性血液透析患者血脂代谢的影响

目的：探究金水宝片联合依诺肝素对维持性血液透析患者血脂代谢的影响。方法：选取2018年12月至2019年3月马鞍山十七冶医院血液净化中心进行透析的患者154例作为研究对象，根据用药不同分为对照组和观察组,每组77例。对照组常规应用依诺肝素抗凝，观察组在对照组抗凝基础上加用金水宝片，各组均干预3个月，比较2组患者血脂变化及持续血液透析并发症发生情况。结果：治疗后，观察组患者三酰甘油、总胆固醇及低密度脂蛋白胆固醇水平下降，高密度脂蛋白胆固醇升高，与治疗前比较差异均有统计学意义（P<0.05），与对照组治疗后比较，差异有统计学意义（P<0.05）；观察组总并发症发生率明显低于对照组，2组比较差异有统计学意义（P<0.05）；2组患者维持性血液透析不良反应发生率均较低，组间比较差异无统计学意义（P>0.05）。结论：金水宝片联合依诺肝素有助于改善维持性血液透析患者血脂代谢水平，降低维持性血液透析相关并发症，值得临床推广应用。     

软组织损伤引起慢性疼痛的治疗

目的：综述运动系统软组织损伤引起慢性疼痛的各种治疗方法的研究进展。资料来源：应用计算机检索Medline1980—01／2006—04与运动系统软组织损伤引起慢性疼痛的治疗相关文章，检索词“Soft tissue injury，pain．chronic，comprehensive therapy”，并限定文章语言种类为“English”；同时计算机检索中国期刊全文数据库1994—01／2006-04期间的相关文章，检索词“软组织损伤、慢性疼痛、治疗方法”，并限定语言种类为中文。同时手工查阅相关书籍。资料选择：对资料进行初审，所选文献内容符合：①软组织损伤引起的慢性疼痛药物治疗的研究。②软组织损伤引起的慢性疼痛微创治疗的研究。③软组织损伤引起的慢性疼痛运动疗法的研究。④软组织损伤引起的慢性疼痛心理治疗的研究。⑤软组织损伤引起的慢性疼痛其他疗法的研究。排除重复性研究的文献。资料提炼：共收集到40篇关于软组织损伤引起的慢性疼痛治疗方法的文献，均为全文，23篇符合纳入标准，排除17篇重复性研究。同时录入书籍3本。资料综合：软组织损伤引起的慢性疼痛的产生是生理、心理及社会因素复杂结合的结果，个体表现差异较大，目前尚无特效治疗方法，常用的治疗方法有：药物治疗、微创治疗、运动疗法、心理治疗、物理疗法及其他疗法。结论：对于软组织损伤引起的慢性疼痛的治疗必须以整体的观点对其进行合理的评估和个体化治疗，才能收到良好的效果。     

nm23-H1基因转染对人胆管癌细胞系QBC939体外浸润能力的影响

目的：探讨nm23-H1基因转染对人胆管癌细胞系QBC939体外浸润能力的影响。方法：将含有全长nm23-H1 cDNA的真核表达载体通过脂腩体法转染人胆管癌细胞系。结果：转染成功的QBC939细胞，其nm23-Hl基因的mRNA、蛋白表达明显增加，转染nm23-H1基因的胆管癌细胞体外浸润能力下降，穿越matrigel的细胞数明显低于亲本QBC939细胞，代表浸润能力的IV型胶原酶（MMP-9）分泌量下降。结论：nm23-Hl基因可以抑制胆管癌细胞的体外浸润能力。