Human leucocyte antigen Class I and II alleles associated with anti-hepatitis C virus-positive patients of North India

Purpose: Humans are the only known natural hosts of hepatitis C virus (HCV). This study was undertaken to examine the frequencies of human leucocyte antigens (HLAs) Class I and Class II genotype profiles in anti-HCV-infected patients of Northern India. Materials and Methods: From a period of January 2013 to August 2014, 148 anti-HCV-positive patients of North India referred to the Department of Molecular Biology and Transplant Immunology, Indraprastha Apollo Hospitals, New Delhi, for performing HLA typing were included in the study. Results: A*02, A*31 allele frequency decreased significantly in anti-HCV-positive patients. Frequencies for HLA-B loci did not reach any statistical significance. Among the Class II alleles, HLA-DRB1*03 and HLA-DRB1*10 were significantly higher in the patient population, and HLA-DRB1*15 was significantly decreased in the patient population as compared to the controls. Conclusion: HLA-A*33 was significantly increased as compared to control population and showed geographic variation in HCV-infected individuals of India.     

DADS上调miR-200b抑制视网膜母细胞瘤细胞的生长与侵袭

目的 探索miR-200b和二烯丙基二硫(DADS)相关的抑瘤机制,为揭示DADS抑制视网膜母细胞瘤生长及侵袭的内在分子机制提供理论依据.方法 采用qRT-PCR分别检测不同浓度的DADS对Y79细胞miR-200b表达的影响,DADS分别设置六种浓度:0 μmol/L、25 μmol/L、50 μmol/L、100 μmol/L、200 μmol/L和400 μmol/L.MTT和Transwell侵袭实验分别检测DADS和miR-200b对Y79细胞生长及侵袭能力的影响,将实验设置成五个组,即miRNA阴性对照组(瞬时转染scramble 40μmol/L);miR-200b组(瞬时转染miR-200b-mimics 40μmol/L);DADS阴性对照组(DMSO 10μmol/L,即mock组);DADS组(DADS 200μmol/L)和DADS+miR-200b组(瞬时共转染miR-200b-mimics 40μmol/L)和DADS (200μmol/L).结果 DADS可上调Y79细胞中miR-200b的表达,且其呈剂量依赖性(P<0.05);在MTT实验中,miR-200b组的OD值(0.549±0.057)较miRNA阴性对照组(0.737±0.135)明显降低;DADS组的OD值(0.508±0.064)较DADS阴性对照组(0.722±0.145)明显降低;而DADS+miR-200b组的OD值(0.362±0.081)较miRNA阴性对照组和DADS阴性对照组降低最为显著(P<0.05),即DADS可以通过上调miR-200b抑制Y79细胞的增殖能力.在Transwell侵袭实验中,外源性的高表达miR-200b组(105±13)较miRNA阴性对照组(162±12)能够显著抑制Y79细胞的穿膜细胞数,DADS组(102±13)较DADS阴性对照组(154±8)能够显著降低Y79的穿膜细胞数,且DADS+miR-200b组(77±8),细胞穿膜细胞数较miRNA阴性对照组和DADS阴性对照组减少最显著(P<0.05),即DADS通过上调miR-200b抑制Y79细胞侵袭.结论 DADS通过上调miR-200b的表达抑制视网膜母细胞瘤细胞的生长及侵袭.     

子宫内膜异位症中miR-143、miR-145和miR-126的差异表达

目的探索子宫内膜异位症（EMs）中miR-143、miR-145和miR-126的差异表达,以及不同月经周期的影响。方法利用realtimeRT-PCR技术,比较miR-143、miR-145和miR-126在EMs患者在位内膜（EU,2例）、异位内膜（EC,14例）、配对EU+EC（14例）,与非EMs患者内膜（EN,28例）中的表达差异;并分析EN和EC组不同月经周期对miR-143、miR-145和miR-126表达的影响。结果不同月经周期的影响分析,发现仅EN标本中miR-143增生期表达量高于分泌期,差异有统计学意义（P＜0.05）。与EN相比,miR-143和miR-145在EU中均表达上调（P＜0.05）,miR-143、miR-145和miR-126在EC中均表达上调（P＜0.01）。配对EU-EC中,miR-143、miR-145和miR-126在EC中均表达上调（P＜0.01）。结论miR-143、miR-145和miR-126在EMs中表达高于非EMs,在EC中表达高于EU。     

人白细胞介素-33在胶质瘤中高表达并能促进胶质瘤细胞U251的侵袭作用

目的:探讨人白细胞介素(interleukin,IL)-33在胶质瘤中的表达及在胶质瘤细胞U251侵袭中的作用?方法:采用免疫组化法检测了16例正常脑组织及86例不同级别胶质瘤标本IL-33蛋白的表达情况;应用Transwell小室检测IL-33对U251侵袭的影响;应用Western blot检测IL-33对胶质瘤细胞NF-κB及其磷酸化状态的影响?结果:免疫组化结果显示,IL-33在胶质瘤组织中表达高于正常脑组织(54.65% vs. 6.25%,P < 0.001)?IL-33在低级别胶质瘤(WHO Ⅰ?Ⅱ级)和高级别胶质瘤(WHO Ⅲ?Ⅳ级)组织中的阳性表达率分别为17.4%和68.3%(P < 0.001)?体外胶质瘤细胞的功能试验中,IL-33能促进U251细胞的侵袭(P < 0.05),并伴随NF-κB蛋白表达上调(P < 0.05)?结论:IL-33在胶质瘤中高表达,IL-33可能通过促进胶质瘤细胞NF-κB磷酸化,从而促进胶质瘤细胞的侵袭能力,对IL-33作用机制的进一步研究将为胶质瘤的临床治疗提供新思路?     

下调CD133表达对肝癌细胞恶性生物学行为的影响

目的:探讨下调CDl33基因的表达对肝癌细胞生物学行为的影响。方法:将合成的CDl33小干扰核糖核酸分子(si RNA)转染至肝癌SMMC7721细胞并检测转染效率;分别以无转染与转染随机si RNA序列的SMMC7721细胞为空白对照和阴性对照,观察CDl33 si RNA转染后CDl33基因沉默效果,以及SMMC7721细胞主要生物学行为的变化。结果:转染24 h后,转染效率可达到(80.8±9.1)%;与空白对照组比较,CDl33 si RNA转染后的SMMC7721细胞CD133 m RNA及蛋白表达量分别降至空白对照组的10%与35%、细胞增殖活性明显降低、细胞凋亡率明显增加(41.3%vs.25.3%)并出现明显的S期阻滞,集落形成能力明显降低(均P0.05)。阴性对照组与空白对照组各指标无统计学差异(均P0.05)。结论:CDl33在肝癌细胞中可能起了癌基因作用,下调其表达能抑制肝癌的恶性生物学行为。     

飞利浦彩色超声iE33掉电故障排查整体思路解析

目的：根据飞利浦彩色超声iE33日常使用当中出现的掉电故障,探讨此类故障行之有效的诊断维修思路。方法：根据掉电故障类型分为连续型以及间歇型分析,结合测量以及隔离等有效手段,按部就班确定故障。结果：设计的故障排查整体思路,可顺利快捷地将故障圈定,能够明显提高故障处理效率。结论：该诊断思路可针对飞利浦iE33常见的掉电故障,通过测量及隔离等手段,为更有效率地处理掉电故障提供了可靠的排查整体思路。     

泻法针刺中髎、下髎配合电针治疗盆底痉挛综合征30例

目的:观察泻法针刺中髎、下髎配合电针治疗盆底痉挛综合征所致便秘的临床疗效。方法:选取2014年1月—2016年6月本院肛肠科门诊治疗的盆底痉挛综合征患者60例,随机分为治疗组和对照组,每组30例。治疗组给予泻法针刺中髎、下髎配合电针治疗,对照组给予平补平泻法针刺中髎、下髎配合电针治疗,每日1次,10次为1个疗程,共治疗3个疗程。结果:治疗组治疗后症状积分优于对照组(P0.05);治疗组有效率93.33%,对照组有效率86.67%,两组比较,差异无统计学意义(P0.05);治疗组治疗后肛管最大收缩压、肛管功能长度、初始便意感容积、直肠肛管压力差明显优于对照组(P0.05)。结论:泻法针刺中髎、下髎配合电针治疗盆底痉挛综合征疗效确切。     

Randomized controlled trial comparing immediate loading with conventional loading using cone-anchored implant-supported screw-retained removable prostheses: A 2-year follow-up clinical trial

Statement of problem

Implant-based prosthetic solutions can be time consuming. If implants can be loaded immediately, treatment time can be reduced.

Plasma protein accumulation in injured endothelial cells. Immunofluorescent localization of IgG and fibrinogen in the rabbit aortic endothelium.

The relationship between endothelial cell injury in the rabbit aorta, and the distribution of the plasma proteins IgG, fibrinogen, and albumin were studied by immunofluorescence techniques. Normal rabbit aortae, as well as different types of experimentally induced atherosclerotic lesions, were studied. Injured endothelial cells were visualized by a dye exclusion test. Uninjured endothelial cells were found to be free from plasma proteins, except for a thin continuous lining of fibrinogen on the luminal side of the cells. In injured endothelial cells, there was an accumulation of both IgG and fibrinogen. Such cells were preferentially localized to branching-points, and the borders of atherosclerotic lesions. Albumin could neither be demonstrated in injured nor in uninjured cells. These observations indicate an uptake of IgG and fibrinogen by injured endothelial cells. The immunohistochemical method employed may be used to visualize injured endothelial cells.     

Incarceration of the meniscus in fractures of the intercondylar eminence of the tibia in children

Four cases of trapping of the meniscus in type II or III fractures of the intercondylar eminence of the tibia in children are reported. At operation the fragments could not be apposed until the meniscus had been lifted out of the fracture. In our opinion, if they had not been operated on these patients would have had persistent trouble in the knee, including non-union, loss of extension and laxity of the anterior cruciate ligament. We therefore recommend either operation for type II and type III lesions or arthroscopy. If the meniscus is trapped we suggest that it should be lifted out and the fragments apposed under arthroscopic control.