原因不明习惯性流产患者自身抗体的研究

目的 通过对原因不明习惯性流产（ＨＡ）患者进行多项自身抗体的筛查,研究了ＨＡ与自身抗体的关系。方法 ６９例原因不明ＨＡ患者为研究组,其中原发性ＨＡ５１例（原发性ＨＡ）继发性ＨＡ１８例（继发性ＨＡ组）３０例健康育龄妇女为对照组,对３组患者采用酶联免疫吸会法检测血清抗心磷脂抗体,抗单链及双链ＤＮＡ抗体,采用Ｈｅｐ－２细胞间接荧光法筛查抗核抗体,采用间接荣光法检测抗平滑肌,抗心肌及抗线粒体抗体,对７种可     

神经胶质瘤中肿瘤相关巨噬细胞研究进展

肿瘤相关巨噬细胞（TAM）是异质性细胞群体,是肿瘤微环境中炎性细胞的主要成分。这些细胞在神经胶质瘤中部分源自中枢神经系统小胶质细胞和循环单核细胞,并与神经胶质瘤的血管生成、免疫抑制、肿瘤进展和侵袭有关。文章综述了TAM通过各种途径促进神经胶质瘤发展的潜在机制,为神经胶质瘤的靶向治疗提供了新的可能性。     

Sensitivity of the hormone dependent MXT-mouse mammary carcinoma to estradiol during tumoral growth. An autoradiographic study

The MXT transplantable mammary tumor is an ovarian sensitive carcinoma of the B6D2F1 mouse strain. The present work documents the mitogenic effect of a single near-physiological dose (pulse) of estradiol (E2) in castrated mice bearing MXT neoplasms 2–7 weeks after their inoculation. Histological sections of tumors and uteri (as control E2 target organs) were processed and nuclear thymidine labeling indices (TLI) were determined by autoradiography. Tumor estrogen receptors contents were evaluated in parallel. The results indicate that the MXT tumor keeps a constant sensitivity to E2 6 weeks after implantation.     

利用SELDI-TOF质谱技术分析喉癌患者血清蛋白质谱的变化

目的：筛选喉癌肿瘤标记物,探讨其在术前、术后患者血清中的表达变化。方法：利用固定金属亲和表面蛋白质芯片和表面增强激光解吸离子化飞行时间质谱（SELDI-TOF-MS）技术检测32例喉癌患者和38例正常人血清中的差异蛋白,进而检测32例喉癌术前和15例喉癌术后10d内血清中的差异蛋白。获得的蛋白质谱采用Ciphergen公司的Biomarker Wizard和Biomarker Pattern软件分析。结果：通过对喉癌患者术前血清与正常人血清蛋白质谱分析发现,共有15个蛋白质表达量有明显差异;对喉癌患者术前血清与术后血清蛋白质谱分析发现,共有17个蛋白质表达量有明显差异。并获得相对分子质量为2958.52、3796.89、5148.86、6115.57、4052.18和7770.76这6个蛋白质组成的模板,可将喉癌术前与术后正确分组,其正确分组率分别为84.38%（27/32）和73.33%（11/15）。结论：通过喉癌手术前后血清中蛋白质谱的比较,可以筛选得到用以诊断喉癌的特异性蛋白标志物并用以预后的判断。固定金属亲和表面蛋白质芯片和SELDI-TOF-MS技术对于发现和筛选血清中的喉癌标志物是一种有效、快速的方法。     

喉癌干细胞在放化疗抵抗中的作用机制

目的：探讨喉癌干细胞的分选方法,分析顺铂、放射线联合应用对喉癌肿瘤干细胞的杀伤效应及机制。方法：应用流式细胞仪荧光活化细胞分选技术检测并分选出喉癌Hep-2细胞系中的CD133＋细胞和CD133-细胞,并检测CD133＋细胞亚群的干细胞特性;采用CCK-8试剂盒分别检测顺铂、放射线对两组细胞的生长抑制率;流式细胞仪检测不同干预方案对2组细胞凋亡率及细胞周期分布情况的影响。结果：CD133＋细胞在喉癌Hep-2细胞系中占（2．43±0．77）％,在细胞增殖、分化及体内成瘤试验中CD133＋细胞均表现出肿瘤干细胞特性;不同浓度剂量的顺铂、放射线对Hep-2细胞均有抑制作用,并在一定浓度范围内呈剂量依赖性;顺铂、放射线单独或联合应用时,CD133-细胞凋亡率显著高于CD133＋细胞（P〈0．01）,并产生G0／G1期阻滞。结论：CD133＋细胞较CD133-细胞更具有明显的肿瘤干细胞特性,对放化疗具有明显的抵抗作用,对凋亡诱导作用不敏感和细胞周期改变为其机制之一。     

口腔颌面部腺样囊性癌嗜神经侵袭的临床分析

目的:探讨口腔颌面部腺样囊性癌（ACC）嗜神经侵袭（PNI）发生情况及相关影响因素。方法:回顾性分析2008年1月至2016年12月山西省肿瘤医院收治的55例口腔颌面部ACC患者的临床资料,采用多元logistic回归模型分析患者临床特征与PNI发生的相关性。结果:55例患者中发生PNI 25例（45.5%）,其中腮腺...     

Biofluid Biomarkers of Alzheimer’s Disease: Progress,Problems, and Perspectives

Since the establishment of the biomarker-based A-T-N (Amyloid/Tau/Neurodegeneration) framework in Alzheimer’s disease (AD), the diagnosis of AD has become more precise, and cerebrospinal fluid tests and positron emission tomography examinations based on this framework have become widely accepted. However, the A-T-N framework does not encompass the whole spectrum of AD pathologies, and problems with invasiveness and high cost limit the application of the above diagnostic methods aimed at the central nervous system. Therefore, we suggest the addition of an “X” to the A-T-N framework and a focus on peripheral biomarkers in the diagnosis of AD. In this review, we retrospectively describe the recent progress in biomarkers based on the A-T-N-X framework, analyze the problems, and present our perspectives on the diagnosis of AD.     

羧甲基壳聚糖复合纳米银、纳米氧化铜的制备及抑菌性研究

本研究在水热条件下利用羧甲基壳聚糖分别还原硝酸银和硫酸铜,得到稳定的羧甲基壳聚糖复合纳米银和纳米氧化铜,并测试其抑菌能力.表征测试显示,所制的纳米银为20～30 nm的球状结构,纳米氧化铜为80～100 nm的花瓣状结构,二者都均匀稳定地分布于羧甲基壳聚糖中.抑菌试验显示,不同浓度的羧甲基壳聚糖复合纳米银(A组2 mg...     

Screening and identification of biomarkers associated with the immune infiltration of intracerebral hemorrhage

BackgroundRecent studies showed that inflammation and immunity might play essential roles in the progression of intracerebral hemorrhage (ICH). However, the underlying mechanisms for changes at the cellular and molecular levels after ICH remain unclear.MethodsWe downloaded the microarray dataset of ICH from the Gene Expression Omnibus (GEO) database. The differential expression gene analysis was obtained by weighted gene co‐expression network analysis (WGCNA). We got the hub genes and performed the biological functions and signaling pathways of these genes by Metascape. GSVA algorithm was used to evaluate the potential physical function of time‐varying ICH samples. We used single‐sample gene set enrichment analysis (ssGSEA) to assess the immune signatures infiltration and analyzed the correlation between hub genes and immune signatures.ResultsThe data sets of all 22 ICH samples in {"type":"entrez-geo","attrs":{"text":"GSE125512","term_id":"125512"}}GSE125512 were examined by the WGCNA R package. We finally screened five hub genes (GAPDH, PF4, SELP, APP, and PPBP) in the royal blue module. Metascape analysis displayed the biological processes related to inflammation and immunology. Cell adhesion molecule binding, myeloid leukocyte activation, CXCR chemokine receptor binding, and regulation of cytokine production were the most enriched pathophysiological process. The immune signatures infiltration analyses showed that ICH patients’ early and late samples had different activity and abundance of immune‐related cells and types.ConclusionsGAPDH, PF4, SELP, APP, and PPBP are identified as potential biomarkers for predicting the progression of ICH. This study may help us better understand the immunologic mechanism and shed new light on the promising approaches of immunotherapy for ICH patients.     

叶酸对小鼠腭突间充质细胞增殖的影响

目的:从细胞水平对维A酸致小鼠腭裂畸形作用和叶酸是否有拮抗维A酸的致畸作用及其机制进行研究。方法:给予孕鼠过量维A酸,诱导胚胎腭裂模型,不完全消化法提取孕期第14天、17天(GD14、17)的胚胎腭突间充质细胞(EPM cells)进行培养并鉴定细胞;采用四甲基偶氮唑盐(MTT)法检测加入不同浓度叶酸与未加入叶酸细胞增殖的情况。采用SPSS16.0软件包对数据进行统计学处理。结果:①在GD10、GD12管饲孕鼠50 mg/kg维A酸,可致胎鼠腭裂畸形;②不完全消化法提纯EPM细胞,纯度达到98%;③维A酸导致GD14的EPM细胞增殖受到抑制,20 μg/mL、40 μg/mL浓度叶酸可拮抗这种抑制作用。结论:①过量维A酸可致小鼠腭裂畸形,腭突间充质细胞增殖受抑制是其致畸机制之一;②叶酸可拮抗维A酸对小鼠GD14 EPM细胞增殖的抑制作用。