|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Role of Ki-67 as a prognostic factor in gastrointestinal stromal tumors显示文摘AIM:To investigate primarily the prognostic value of Ki-67,as well as other parameters,in gastrointestinal stromal tumors(GISTs).METHODS:Ki-67,c-KIT,platelet-derived growth factor receptor-alpha(PDGFRα),smooth muscle actin(SMA),CD34,S100 were stained for immunohistochemistry which was performed on formalin-fixed,paraffinembeded sections on representative block from each case.Proliferation index counted by Ki-67 antibody was calculated as a number of positive nuclear reaction over 100 cells.Immunoreactivity for c-KIT and PDGFRα was evaluated semiquantitatively(weak,intermediate,strong) and for c-KIT type of reactivity was analyzed(cytoplasmic,membrane and 'dot-like' staining).Immunoreactivity for SMA,CD34 and S100 were was evaluated as positive or negative antigen expression.Pathologic parameters investigated in this study included tumor size,cell type(pure spindle,pured epitheloid mixed spindle and epitheloid),mitotic count,hemorrhage,necrosis,mucosal ulceration.Clinical data included age,gender,primary tumor location and spread of disease.χ 2 test and Student's t-test were used for comparisons of baseline characteristics.The Cox's proportional hazard model was used for univariable and multivariable analyses.Survival rates were calculated by Kaplan-Meier method and statistical significance was determined by the log-rank test.RESULTS:According to the stage of disease,there were 36 patients with localized disease,29 patients with initially localized disease but with its recurrence in the period of follow up,and finally,35 patients had metastatic disease from the very beginning of disease.Tumor originated most commonly in the stomach(41%),small intestine was the second most common location(36%).The mean size of primary tumors was 6.5 cm.The mean duration of follow-up was 60 mo.Multiple parameters were analyzed for their effect on overall survival,but no one reached statistical significance(P = 0.06).Analysis of time to progression/relapse in initially localized disease(univariate analysis),tumor size,mitotic count,Ki-67 and type of d-KIT distribution(cytoplasmic vs membrane/'dot-like') showed statistically significant correlation.In multivariate analysis in the group of patients with localized disease,there were only 2 parameters that have impact on relapse,Ki-67 and SMA(P < 0.0001 and P < 0.034,respectively).Furthermore,Ki-67 was analyzed in localized diseasevs localized with recurrence and metastatic disease.It was shown that there is a strict difference between these 2 groups of patients(median value was 2.5 for localized disease vs 10.0 for recurrent/metastatic disease,P < 0.0001).It was also shown that the cut-off value which is still statistically significant in terms of relapse on the level of 6%.The curves for survival on that cut-off level are significantly different(P < 0.04,Cox F).CONCLUSION:Ki-67 presents a significant prognostic factor for GIST recurrence which could be of great importance in evaluating malignant potential of disease. | Borislav Belev Iva Bri Juraj Prejac Zrna Antunac Golubi Damir Vrbanec Jadranka Bozikov Ivan Aleri Marko Boban Jasminka Jaki Razumovi | 2013 | World Journal of Gastroenterology2013，19，4： | 14 |
| 2 | Single-cell Analysis of CAR-T Cell Activation Reveals A Mixed T_H1/T_H2 Response Independent of Differentiation显示文摘The activation mechanism of chimeric antigen receptor (CAR)-engineered T cells may differ substantially from T cells carrying native T cell receptor,but this difference remains poorly understood. We present the first comprehensive portrait of single-cell level transcriptional and cyto-kine signatures of anti-CD19/4-1BB/CD28/CD3ζ CAR-T cells upon antigen-specific stimulation. Both CD4+helper T (TH) cells and CD8+cytotoxic CAR-T cells are equally effective in directly killing target tumor cells and their cytotoxic activity is associated with the elevation of a range of TH1 and TH2 signature cytokines,e.g.,interferon γ,tumor necrotic factor α,interleukin 5 (IL5),and IL13,as confirmed by the expression of master transcription factor genes TBX21 and GATA3. However,rather than conforming to stringent TH1 or TH2 subtypes,single-cell analysis reveals that the predominant response is a highly mixed TH1/TH2 function in the same cell. The reg-ulatory T cell activity,although observed in a small fraction of activated cells,emerges from this hybrid TH1/TH2 population. Granulocyte-macrophage colony stimulating factor (GM-CSF) is pro-duced from the majority of cells regardless of the polarization states,further contrasting CAR-T to classic T cells. Surprisingly,the cytokine response is minimally associated with differentiation status,although all major differentiation subsets such as na?ve,central memory,effector memory,and effector are detected. All these suggest that the activation of CAR-engineered T cells is a canon-ical process that leads to a highly mixed response combining both type 1 and type 2 cytokines together with GM-CSF,supporting the notion that polyfunctional CAR-T cells correlate with objective response of patients in clinical trials. This work provides new insights into the mechanism of CAR activation and implies the necessity for cellular function assays to characterize the quality of CAR-T infusion products and monitor therapeutic responses in patients. | Iva Xhangolli Burak Dura GeeHee Lee Dongjoo Kim Yang Xiao Rong Fan | 2019 | Genomics, Proteomics & Bioinformatics2019，17，2： | 7 |
| 3 | An in vitro prototype of a porcine biomimetic testis-like cell culture system: a novel tool for the study of reassembled Sertoli and Leydig cells显示文摘目前,有在 vitro 不可靠像睾丸的 biomimetic 机关文化系统设计了在 Sertoli 和 Leydig 房间上估计人的 gonadotropins 的功能的效果的装配 prepubertal。精子发生被调整由内分泌, paracrine,和 juxtacrine 因素(阴囊的串音) ,主要由象 luteinizing 荷尔蒙(LH ) 和由分别地刺激 Leydig 和 Sertoli 房间起一个枢轴的作用的刺激滤泡的荷尔蒙(FSH ) 那样的 gonadotropins 安排了。我们的学习的目的是建立一在里面 vitro prepubertal 是的猪的 bioengineered 构造为重新集合的 Sertoli 和 Leydig 房间上的试验性的研究的一个新模型。我们评估了从 15- 获得到 20-day-old 的 Sertoli 和 Leydig 房间新生的猪睾丸以纯净和功能。随后,净化了 Sertoli 并且充实 Leydig 房间受到 coincubation 获得一在里面 vitro prepubertal 猪的像睾丸的文化系统。我们为 anti-M 执行了连接酶的 immunosorbent 试金(ELISA ) | Iva Arato Giovanni Luca Francesca Mancuso Catia Bellucci Cinzia Lilli Mario Calvitti Barbara C Hansen Domenico Milardi Giuseppe Grande Riccardo Calafiore | 2018 | Asian Journal of Andrology2018，20，2： | 4 |
| 4 | Regulated upon activation,normal T cell expressed and secreted(RANTES)levels in the peripheral blood of patients with Alzheimer’s disease显示文摘Alzheimer’s disease(AD)is the most common type of dementia,but it is very difficult to diagnose with certainty,so many AD studies have attempted to find early and relevant diagnostic markers.Regulated upon activation,normal T cell expressed and secreted(RANTES,also known as C-C chemokine ligand)is a chemokine involved in the migration of T cells and other lymphoid cells.Changes in RANTES levels and its expression in blood or in cerebrospinal fluid have been reported in some neurodegenerative diseases,such as Parkinson’s disease and multiple sclerosis,but also in metabolic diseases in which inflammation plays a role.The aim of this observational study was to assess RANTES levels in peripheral blood as clinical indicators of AD.Plasma levels of RANTES were investigated in 85 AD patients in a relatively early phase of AD(median 8.5 months after diagnosis;39 men and 46 women;average age 75.7 years),and in 78 control subjects(24 men and 54 women;average age 66 years).We found much higher plasma levels of RANTES in AD patients compared to controls.A negative correlation of RANTES levels with age,disease duration,Fazekas scale score,and the medial temporal lobe atrophy(MTA)score(Scheltens’s scale)was found in AD patients,i.e.,the higher levels corresponded to earlier stages of the disease.Plasma RANTES levels were not correlated with cognitive scores.In AD patients,RANTES levels were positively correlated with the levels of pro-inflammatory cytokines interleukin-6 and tumor necrosis factor-α,which is consistent with the wellknown fact that AD is associated with inflammatory processes.RANTES levels were also positively correlated with insulin levels in AD patients,with insulin resistance(HOMA-R)and pancreatic beta cell function(HOMA-F).This study evaluated several clinical and metabolic factors that may affect plasma levels of RANTES,but these factors could not explain the increases in RANTES levels observed in AD patients.Plasma levels of RANTES appear to be an interesting peripheral marker for early stages of AD.The study was approved by the Ethics Committee of Institute of Endocrinology,Prague,Czech Republic on July 22,2011. | Gabriela Vacínová Daniela Vejražkova Robert Rusina Iva Holmerová Hana Vaňková Eva Jarolímová Josef Včelák Běla Bendlová Markéta Vaňková | 2021 | Neural Regeneration Research2021，16，4： | 3 |
| 5 | Endoscopic ultrasound elastography strain histograms in the evaluation of patients with pancreatic masses显示文摘AIM: To investigate the accuracy of the strain histogram endoscopic ultrasound(EUS)-based method for the diagnostic differentiation of patients with pancreatic masses. METHODS: In a prospective single center study, 149 patients were analyzed, 105 with pancreatic masses and 44 controls. Elastography images were recorded using commercially available ultrasound equipment in combination with EUS linear probes. Strain histograms(SHs) were calculated by machine integrated software in regions of interest and mean values of the strain histograms were expressed as Mode 1(over the mass) and Mode 2(over an adjacent part of pancreatic tissue, representing the reference area). The ratio between Mode 2 and Mode 1 was calculated later, representing a new variable, the strain histogram ratio. After the final diagnosis was established, two groups of patients were formed: a pancreatic cancer group with positive cytology achieved by fine needle aspiration puncture or histology after surgery(58 patients), and a massforming pancreatitis group with negative cytology and follow-up after 3 and 6 mo(47 patients). All statistical analyses were conducted in SPSS 14.0(SPSS Inc., Chicago, IL, United States).RESULTS: Results were obtained with software for strain histograms with reversed hue scale(0 represents the hardest tissue structure and 255 the softest). Based on the receiver operating characteristics(ROC) curve coordinates, the cut-off point for Mode 1 was set at the value of 86. Values under the cut-off point indicated the presence of pancreatic malignancy. Mode 1 reached 100% sensitivity and 45% specificity with overall accuracy of 66%(95%CI: 61%-66%) in detection of pancreatic malignant tumors among the patients with pancreatic masses. The positive and negative predictive values were 54% and 100%, respectively. The cut-off for the new calculated variable, the SH ratio, was set at the value 1.153 based on the ROC curve coordinates. Values equal or above the cut-off value were indicative of pancreatic malignancy. The SH ratio reached 98% sensitivity, 50% specificity and an overall accuracy of 69%(95%CI: 63%-70%). The positive and negative predictive values were 92% and 100%, respectively.CONCLUSION: SH showed high sensitivity in pancreatic malignant tumor detection but disappointingly low specificity. Slight improvements in specificity and accuracy were achieved using the SH ratio. | Dalibor Opa?i? Nadan Rustemovi? Mirjana Kalauz Pave Marko? Zvonimir Ostoji? Matea Majerovi? Iva Ledinsky Ana Vi?nji? Juraj Krznari? Milorad Opa?i? | 2015 | World Journal of Gastroenterology2015，21，13： | 3 |
| 6 | A rapid competitivebinding nonseparationelectro chemical enzyme immunoas-say(NEEIA)test strip for microcystin-LR(MCLR)de-termination 显示文摘 | Iva D Kevin M C Kennedy D G | 2006 | Biosensors and Bioelectronics2006，5，： | 1 |
| 7 | Using A Double-Pass Solar Drier For Jerky Drying显示文摘 | Jan Banout Iva Kucerova Stepan Marek | 2012 | Energy Procedia2012，，： | 1 |
| 8 | Effects of Methyl mercury and Organic Acid Mercurials on the isposition of Exogenous Selenium in Rats显示文摘 | Zolta'n Gregus A'gnes Gyurasics Iva'n Csanaky and Zolta'n Pinte'r | 2001 | Toxicology and Applied Pharmacology2001，174，： | 1 |
| 9 | lndications ofimmunodepression in chickens infect- ed with varians strains of Marek' s disease vims显示文摘 | P ivas A L Fabricant J | 1988 | Avian Disease1988，32，： | 1 |
| 10 | Optimization of wine head-space analysis by solid phase microextraction capillary gas chro-matography with mass spectrometric and flame ionization detec-tion 显示文摘 | Tara T Piergiorgio C Iva S | 2005 | Food Chemistry2005，93，2： | 1 |
| 11 | Measurement and predication of helicopter spray nozzle atomization显示文摘 | Kirk Iva W | 2002 | Transactions of the American Society of Agricultural Engineers2002，45，1： | 1 |
| 12 | Dance,language and the brain显示文摘 | Iva Hagendoorn | 2010 | Art and Technology2010，，23： | 1 |
| 13 | Analytical Characterization of Heparin by Capillary Zone Electrophoresis with Conductivity Detection and Polymeric Buffer Additives显示文摘 | Iva V Emil H | 2004 | J Pharmaceut Biomed Anal2004，36，： | 1 |
| 14 | ICP-AES determination of minor and major elements in Cornelian cherry ( Cornus mas L.) after microwave assisted digestion显示文摘 | Iva Juranovi? Cindri? Michaela Zeiner Martina Krpeti? Gerhard Stingeder | 2012 | Microchemical Journal2012，，： | 1 |
| 15 | Ganglia/Nerve Fibers Ratio Correlates with the Need for Surgery in Patients Diagnosed with Hirschsprung’s Disease Allied Disorder (HAD)显示文摘 | Iva Gasparovic Drazen Kovac Mladen Persic Irena Slavic Harry Nikolic Nives Jonjic | 2011 | Fetal & Pediatric Pathology2011，，6： | 1 |
| 16 | HPV typing of high-grade dysplasia (CIN III) in cone biopsies of 38 HPV-vaccinated women显示文摘 | Ondrej Ondi? Jana Ka?pírková Ond?ej Májek Iva Kinkorová | 2014 | Virchows Archiv2014，，1： | 1 |
| 17 | Sporogenesis and spore structure in Kudoa lunata (Myxosporea, Multivalvulida)显示文摘 | Ji?í Lom Iva Dyková | 1988 | Parasitology Research1988，，6： | 1 |
| 18 | Transcathether gelfoam embolization in abdominal, retropertoneal, and pelvic hemorrhage 显示文摘 | Jander HP Russionovich IVA | 1980 | Radiology1980，136，3： | 1 |
| 19 | Highly porous and interconnected starch-based scaffolds Production,characterization and surface modification显示文摘 | Iva P Paula M L P Azevedo Helena S A | 2010 | Materials Science and Engineering C2010，30，： | 1 |
| 20 | Influence of dietary phenolic acids on redox status of iron:ferrous iron autoxidation and ferric iron reduction 显示文摘 | Katefina Chvatalova Iva Slaninova Lenka Brezinova | 2008 | Food Chemistry2008，106，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员