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1Adipose-derived stromal cells: Their identity and uses in clinical trials, an update显示文摘In adults, adipose tissue is abundant and can be easily sampled using liposuction. Largely involved in obesity and associated metabolic disorders, it is now described as a reservoir of immature stromal cells. These cells, called adipose-derived stromal cells (ADSCs) must be distinguished from the crude stromal vascular fraction (SVF) obtained after digestion of adipose tissue. ADSCs share many features with mesenchymal stem cells derived from bone marrow, including paracrine activity, but they also display some specific features, including a greater angiogenic potential. Their angiogenic properties as well as their paracrine activity suggest a putative tumor-promoting role for ADSCs although contradictory data have been published on this issue. Both SVF cells and ADSCs are currently being investigated in clinical trials in several fields (chronic inflammation, ischemic diseases, etc. ). Apart from a phase Ⅲ trial on the treatment of fistula,most of these are in phaseⅠand use autologous cells. In the near future, the end results of these trials should provide a great deal of data on the safety of ADSC use.Louis Casteilla Valérie Planat-Benard Patrick Laharrague Béatrice Cousin 2011World Journal of Stem Cells2011,3,4:31
2Characterization of focal liver lesions with SonoVue~-enhanced sonography: International multicenter-study in comparison to CT and MRI显示文摘AIM: To evaluate in a multicenter study whether the sonographic characterization of focal liver lesions can be improved using SonoVueüà-enhancement; and to compare this method with computed tomography (CT) and magnetic resonance imaging (MRI). METHODS: One hundred and thirty four patients with one focal liver lesion detected in baseline ultrasound (US) were examined with conventional US, contrastenhanced US (n = 134), contrast-enhanced CT (n = 115) and/or dynamic contrast-enhanced MRI (n = 70). The lesions were classified as malignant, benign or indeterminate and the type of lesion was determined. The f inal diagnosis based on the combined information of all imaging examinations, clinical information and histology (n = 32) was used. Comparisons were made to see whether the addition of contrast-enhanced US led to the improvement of the characterization of doubtful focal liver lesions. RESULTS: In comparison with unenhanced US, SonoVue markedly improves sensitivity and specificity for the characterization (malignant/benign) of focal liver lesions. In comparison with CT and/or dynamic MRI, SonoVueüà -enhanced sonography applied for characterization of focal liver lesions was 30.2% more sensitive in the recognition of malignancy and 16.1% more specific in the exclusion of malignancy and overall 22.9% more accurate. In the subgroup with confirmative histology available (n = 30), sensitivity was 95.5% (CEUS), 72.2% (CT) and 81.8% (MRI), and specif icity was 75.0% (CEUS), 37.5% (CT) and 42.9% (MRI). The sensitivity and specif icity of CEUS for the identif ication of focal nodular hyperplasia (FNH) and hemangiomas was 100% and 87%, resulting in an accuracy of 94.5%. CONCLUSION: SonoVueüà-enhanced sonography emerges as the most sensitive, most specif ic and thus most accurate imaging modality for the characterization of focal liver lesions.Hervé Trillaud Jean-Michel Bruel Pierre-Jean Valette Valérie Vilgrain Gérard Schmutz Raymond Oyen Wieslaw Jakubowski Jan Danes Vlastimil Valek Christian Greis 2009World Journal of Gastroenterology2009,15,30:34
3以大剂量或低剂量二磷酸氯喹作为新型冠状病毒肺炎住院患者辅助治疗的临床疗效显示文摘至今尚没有推荐用于新型冠状病毒肺炎(COVID-19)的特异性抗病毒药物。细胞研究表明,高浓度二磷酸氯喹(CQ)可发挥抗病毒作用。该研究评估了2种CQ剂量在重症COVID-19患者中的安全性和有效性,为平行、双盲、随机的Ⅱb期临床试验,收录81例COVID-19成年患者。试验基地为巴西亚马逊马瑙斯市的三级医疗机构。试验时间为2020年3月23日至4月5日。胡骢(编译) Borba MGS Val FFA Sampaio VS 2020中华医学杂志2020,100,41:20
4H pylori (CagA) and Epstein-Barr virus infection in gastric carcinomas:Correlation with p53 mutation and c-Myc,Bcl-2 and Bax expression显示文摘AIM: To investigate the interrelationship between H pylori and Epstein-Barr virus (EBV) infection in the gastric carcinogenesis having in focus the p53 mutation and the c-Myc, Bcl-2 and Bax expression. METHODS: seventy-one gastric carcinoma tissues were assessed by polymerase chain reaction (PCR) for H pylori and in situ hybridization for EBV. c-Myc, Bcl-2 and Bax expression were detected by immunohistochemistry and single-stranded conformational polymorphism (SSCP) for p53 mutation. RESULTS: The positivity rates for H pylori and EBV were 94.4% and 8.45%, respectively. The majority of the cases displayed only the H pylori presence. All EBV positive cases were also H pylori positive. None infectious agent was observed in 5.55% of the cases. The intestinal type tumor was more frequent in the co-infected and non-infected groups. The female predominated in the non-infected group showing statistical significance (70.4% vs 29.6%, P=0.039). The Bcl-2 was only detected in the group exclusively infected by H pylori. However, c-Myc and Bax were detected in the three groups but with a low frequency in the co-infected group. Mutation of p53 was present in all groups, with the highest frequencies in the H pylori positive groups. CONCLUSION: The frequency of H pylori infection in gastric carcinomas was high. The presented data indicated that gastric carcinogenesis has different pathways depending of the presence of the two investigated infectious agents, suggesting a possible involvement of H pylori with apoptotic process. The low expression of c-Myc and Bax in the EBV-positive groups suggests that EBV may inhibit the expression of these proteins. Nevertheless, p53 mutation shows to be a relevant alteration, independent of both infectious agents.Valeska Portela Lima Marcos Antonio Pereira de Lima Angela Rosa André Márcia Valéria Pitombeira Ferreira Marcos Aurélio Pessoa Barros Sílvia Helena Barem Rabenhorst 2008World Journal of Gastroenterology2008,14,6:17
5新形势·新策略--中药新药及健康产品研发与国际化发展显示文摘'2017中国(连云港)国际医药技术大会'于2017年11月15-17日在江苏省连云港市召开。会议期间,中国药理学会中药与天然药物药理专业委员会与江苏康缘药业股份有限公司共同举办了'中药新药及健康产品研发与国际化发展论坛'。中国药理学会理事长兼中药与天然药物药理专业委员会主任委员、国际药理学联合会(IUPHAR)天然药物药理分会主席张永祥教授,中国药理学会前任理事长兼中药与天然药物药理专业委员会副主任委员杜冠华教授和江苏康缘药业股份有限公司董事长、中药与天然药物药理专业委员会副主任委员肖伟担任论坛共同主席。IUPHAR秘书长Michael SPEDDING教授、IUPHAR天然药物药理分会副主席Valérie SCHINI-KERTH教授、英国Robert Gordon大学天然产物研究中心主任Cherry WAINWRIGHT教授和韩国药理学会理事长金仁谦教授等外籍专家、中国药理学会中药与天然药物药理专业委员会委员以及江苏康缘药业股份有限公司主研人员70余人参加了本次论坛。国家卫生和计划生育委员会科技教育司重大专项处顾金辉处长应邀参会。论坛针对中药新药与健康产品研发与国际化发展等有关问题进行了综合讨论。为促进国内外学术交流,本文对部分专家的观点和意见进行了整理,以期为提高我国中药新药与健康产品研发水平及国际化发展起到积极的推动作用。蒋宁 齐春会 曹亮 陈兰英 顾金辉 康永 Inkyeom KIM 连晓媛 陆茵 吕圭源 聂克 齐云 Valérie SCHINI-KERTH Michael SPEDDING Cherry WAINWRIGHT 王月华 肖伟 杨勇 余林中 张丹参 张永鹤 周文霞 杜冠华 张永祥 2018中国药理学与毒理学杂志2018,32,1:16
6Conventional therapy for moderate to severe inflammatory bowel disease: A systematic literature review显示文摘BACKGROUND Despite the advent of biological drugs, conventional therapy continues to be used in moderate to severe inflammatory bowel disease(MS-IBD). This study hypothesized that as a standard of treatment and the primary alternative to biologics, conventional therapy should present robust effectiveness results in IBD outcomes.AIM To investigate the effectiveness of conventional therapy for MS-IBD.METHODS A systematic review with no time limit was conducted in July 2017 through the Cochrane Collaboration, MEDLINE, and LILACS databases. The inclusion criteria encompassed meta-analyses, systematic reviews, randomized clinical trials, observational and case-control studies concerning conventional therapy in adult patients with MS-IBD, including Crohn's disease(CD) and ulcerative colitis(UC). Corticosteroids(prednisone, hydrocortisone, budesonide, prednisolone,dexamethasone), 5-aminosalicylic acid(5-ASA) derivatives(mesalazine and sulfasalazine) and immunosuppressants [azathioprine(AZA), methotrexate(MTX), mycophenolate, cyclosporine, tacrolimus, 6-mercaptopurine(6-MP)] were considered conventional therapy. The exclusion criteria were sample size below50; narrative reviews; specific subpopulations(e.g., pregnant women,comorbidities); studies on postoperative IBD; and languages other than English,Spanish, French or Portuguese. The primary outcome measures were clinical remission(induction or maintenance), clinical response and mucosal healing. As secondary outcomes, fecal calprotectin, hospitalization, death, and surgeries were analyzed. The quality of the evidence was assessed using the Grading of Recommendations Assessment, Development and Evaluation criteria.RESULTS The search strategy identified 1995 citations, of which 27 were considered eligible(7 meta-analyses, 20 individual studies). For induction of clinical remission, four meta-analyses were selected(AZA and 6-MP showed no advantage over placebo,MTX or 5-ASA in CD; MTX showed no statistically significant difference versus placebo, 6-MP, or 5-ASA in UC; tacrolimus was superior to placebo for UC in two meta-analyses). Only one meta-analysis evaluated clinical remission maintenance, showing no statistically significant difference between MTX and placebo, 5-ASA, or 6-MP in UC. AZA and 6-MP had no advantage over placebo in induction of clinical response in CD. Three meta-analyses showed the superiority of tacrolimus vs placebo for induction of clinical response in UC. The clinical response rates for cyclosporine were 41.7% in randomized controlled trials(RCTs) and 55.4% in non-RCTs for UC. For induction of mucosal healing,one meta-analysis showed a favorable rate with tacrolimus versus placebo for UC. For secondary outcomes, no meta-analyses specifically evaluated fecal calprotectin, hospitalization or death. Two meta-analyses were retrieved evaluating colectomy rates for tacrolimus and cyclosporine in UC. Most of the twenty individual studies retrieved contained a low or very low quality of evidence.CONCLUSION High-quality evidence assessing conventional therapy in MS-IBD treatment is scarce, especially for remission maintenance, mucosal healing and fecal calprotectin.Adérson Omar Mourao Cintra Damiao Matheus Freitas Cardoso de Azevedo Alexandre de Sousa Carlos Marcela Yumi Wada Taciana Valéria Marcolino Silva Flávio de Castro Feitosa 2019World Journal of Gastroenterology2019,25,9:13
7The Montreal Cognitive Assessment, MoCA: A Brief Screening Tool For Mild Cognitive Impairment显示文摘Ziad S.Nasreddine Natalie A.Phillips ValérieBédirian SimonCharbonneau VictorWhitehead IsabelleCollin Jeffrey L.Cummings HowardChertkow 2005Journal of the American Geriatrics Society2005,,4:12
8Phase angle obtained by bioelectrical impedance analysis independently predicts mortality in patients with cirrhosis显示文摘AIM To evaluate the prognostic value of the phase angle(PA)obtained from bioelectrical impedance analysis(BIA) for mortality prediction in patients with cirrhosis. METHODS In total, 134 male cirrhotic patients prospectively completed clinical evaluations and nutritional assessment by BIA to obtain PAs during a 36-mo follow-up period. Mortality risk was analyzed by applying the PA cutoff point recently proposed as a malnutrition marker(PA ≤ 4.9°) in Kaplan-Meier curves and multivariate Cox regression models. RESULTS The patients were divided into two groups according to the PA cutoff value(PA > 4.9°, n = 73; PA ≤ 4.9°, n = 61). Weight, height, and body mass index were similar in both groups, but patients with PAs > 4.9° were younger and had higher mid-arm muscle circumference, albumin, and handgrip-strength values and lower severe ascites and encephalopathy incidences, interleukin(IL)-6/IL-10 ratios and C-reactive protein levels than did patients with PAs ≤ 4.9°(P ≤ 0.05). Forty-eight(35.80%) patients died due to cirrhosis, with a median of 18 mo(interquartile range, 3.3-25.6 mo) follow-up until death. Thirty-one(64.60%) of these patients were from the PA ≤ 4.9° group. PA ≤ 4.9° significantly and independently affected the mortality model adjusted for Model for End-Stage Liver Disease score and age(hazard ratio = 2.05, 95%CI: 1.11-3.77, P = 0.021). In addition, Kaplan-Meier curves showed that patients with PAs ≤ 4.9° were significantly more likely to die. CONCLUSION In male patients with cirrhosis, the PA ≤ 4.9° cutoff was associated independently with mortality and identified patients with worse metabolic, nutritional, and disease progression profiles. The PA may be a useful and reliable bedside tool to evaluate prognosis in cirrhosis.Giliane Belarmino Maria Cristina Gonzalez Raquel S Torrinhas Priscila Sala Wellington Andraus Luiz Augusto Carneiro D'Albuquerque Rosa Maria R Pereira Valéria F Caparbo Graziela R Ravacci Lucas Damiani Steven B Heymsfield Dan L Waitzberg 2017World Journal of Hepatology2017,9,7:11
9Nat Biotechnol:将人星形胶质细胞重编程为多巴胺能神经元,有助治疗帕金森病显示文摘帕金森病是一种主要影响运动系统的神经退行性疾病。它的特征在于大脑中的多巴胺能神经元(dopaminergic neuron)渐进性丧失。尽管当前的疗法旨在补充多巴胺水平,但是没有一种疗法能够恢复这些丢失的细胞。如今。在一项新的研究中,来自瑞典、奥地利、西班牙和美国的研究人员开发出一种方法:将神经胶质细胞(glialcell)转化为活性的多巴胺能神经元,并且所产生的多巴胺能神经元能够部分恢复帕金森病模式小鼠的运动功能。这项概念验证研究可能为开发出一种治疗这种疾病的新方法铺平道路。Pia Rivetti di Val Cervo, Elisa Martín-Montañez, Enrique M Toledo, Gioele La Manno, Sara Padrell Sánchez, Sten Linnarsson Ernest Arenas Roman A Romanov, Christian Pifl Tibor Harkany Roman A Romanov, Giada Spigolon, Débora Masini, Michael Feyder, Tibor Harkany Gilberto Fisone Elisa Martín-Montañez Yi-Han Ng Marius Wernig 2017现代生物医学进展2017,17,17:11
10TraitMill:禾谷类作物高产基因发掘的引擎(英文)显示文摘转基因技术是研究植物发育的有效的途径。比利时的作物设计公司(CropDesign)成功研制出称为TraitMill的技术平台,TraitMill平台不仅是一个能够大规模开展转基因和植株评价的高通量的技术平台,而且还是一个在植物表型上鉴定基因和基因组合的非常有用的工具。无论是在理想的植株生长条件下,还是在不同非生物逆境或营养胁迫条件下,利用TraitMill平台每年可成功地鉴定成百个不同的“启动子—基因”组合。基于对水稻生长发育的特别设计和高精度的测量方法改造,TraitMill平台已经全面应用于水稻转基因及其性状的评价。迄今为止,TraitMill平台是唯一一个将转基因技术和植株性状自动化评价系统相结合的技术平台。显然,应用于改良禾谷类作物产量基因的鉴定,TraitMill平台具有独特的优势。Christophe Reuzeau Jan Pen Valérie Frankard Joris de Wolf Rindert Peerbolte Willem Broekaert Wim van Camp 方宣钧(推荐人) 2005分子植物育种2005,3,5:10
11Interrelationship between chromosome 8 aneuploidy,C-MYC amplification and increased expression in individuals from northern Brazil with gastric adenocarcinoma显示文摘AIM: To investigate chromosome 8 numerical aberra- tions, C-MYC oncogene alterations and its expression in gastric cancer and to correlate these findings with histo- pathological characteristics of gastric tumors. METHODS: Specimens were collected surgically from seven patients with gastric adenocarcinomas. Immu- nostaining for C-MYC and dual-color fluorescence in situ hybridization (FISH) for C-MYC gene and chromosome 8 centromere were performed. RESULTS: All the cases showed chromosome 8 aneu- ploidy and C-MYC amplification, in both the diffuse and intestinal histopathological types of Lauren. No significant difference (P < 0.05) was observed between the level ofchromosome 8 ploidy and the site, stage or histological type of the adenocarcinomas. C-MYC high amplification, like homogeneously stained regions (HSRs) and double minutes (DMs), was observed only in the intestinal-type. Structural rearrangement of C-MYC, like translocation, was observed only in the diffuse type. Regarding C-MYC gene, a significant difference (P < 0.05) was observed between the two histological types. The C-MYC protein was expressed in all the studied cases. In the intestinal- type the C-MYC immunoreactivity was localized only in the nucleus and in the diffuse type in the nucleus and cytoplasm. CONCLUSION: Distinct patterns of alterations between intestinal and diffuse types of gastric tumors support the hypothesis that these types follow different genetic path- ways.Danielle Queiroz Calcagno Mariana Ferreira Leal Aline Damaceno Seabra Andre Salim Khayat Elizabeth Suchi Chen Samia Demachki Paulo Pimentel Assumpcao Mario Henrique Girao Faria Silvia Helena Barem Rabenhorst Márcia Valéria Pitombeira Ferreira Marília de Arruda Cardoso Smith Rommel Rodríguez Burbano 2006World Journal of Gastroenterology2006,12,38:9
12Knockdown of MLO genes reduces susceptibility to powdery mildew in grapevine显示文摘Erysiphe necator is the causal agent of powdery mildew(PM),one of the most destructive diseases of grapevine.PM is controlled by sulfur-based and synthetic fungicides,which every year are dispersed into the environment.This is why PM-resistant varieties should become a priority for sustainable grapevine and wine production.PM resistance can be achieved in other crops by knocking out susceptibility S-genes,such as those residing at genetic loci known as MLO(Mildew Locus O).All MLO S-genes of dicots belong to the phylogenetic clade V,including grapevine genes VvMLO7,11 and 13,which are upregulated during PM infection,and VvMLO6,which is not upregulated.Before adopting a gene-editing approach to knockout candidate S-genes,the evidence that loss of function of MLO genes can reduce PM susceptibility is necessary.This paper reports the knockdown through RNA interference of VvMLO6,7,11 and 13.The knockdown of VvMLO6,11 and 13 did not decrease PM severity,whereas the knockdown of VvMLO7 in combination with VvMLO6 and VvMLO11 reduced PM severity up to 77%.The knockdown of VvMLO7 and VvMLO6 seemed to be important for PM resistance,whereas a role for VvMLO11 does not seem likely.Cell wall appositions(papillae)were present in both resistant and susceptible lines in response to PM attack.Thirteen genes involved in defense were less upregulated in infected mlo plants,highlighting the early mlo-dependent disruption of PM invasion.Stefano Pessina Luisa Lenzi Michele Perazzolli Manuela Campa Lorenza Dalla Costa Simona Urso Giampiero Valè Francesco Salamini Riccardo Velasco Mickael Malnoy 2016Horticulture Research2016,3,1:7
13Old-age inflammatory bowel disease onset:A different problem?显示文摘Inflammatory bowel disease (IBD) in patients aged > 60 accounts for 10%-15% of cases of the disease. Diganostic methods are the same as for other age groups. Care has to be taken to distinguish an IBD colitis from other forms of colitis that can mimick clinically, endoscopically and even histologically the IBD entity. The clinical pattern in ulcerative colitis (UC) is proctitis and left-sided UC, while granulomatous colitis with an inflammatory pattern is more common in Crohn's disease (CD). The treatment options are those used in younger patients, but a series of considerations related to potential pharmacological interactions and side effects of the drugs must be taken into account. The safety profile of conventional immunomodulators and biological therapy is acceptable but more data are required on the safety of use of these drugs in the elderly population. Biological therapy has risen question on the possibility of increased side effects, however this needs to be confirmed. Adherence to performing all the test prior to biologic treatment administration is very important. The overall response to treatment is similar in the different patient age groups but elderly patients have fewer recurrences. The number of hospitalizations in patients > 65 years is greater than in younger group, accounting for 25% of all admissions for IBD. Mortality is similar in UC and slightly higher in CD, but significantly increased in hospitalized patients. Failure of medicaltreatment continues to be the most common indication for surgery in patients aged > 60 years. Age is not considered a contraindication for performing restorative proctocolectomy with an ileal pouch-anal anastomosis. However, incontinence evaluation should be taken into account an individualized options should beJoaquin Hinojosa del Val 2011World Journal of Gastroenterology2011,17,22:7
14Is autoimmune hepatitis a frequent finding among HCV patients with intense interface hepatitis?显示文摘AIM:To evaluate the overlap of autoimmune hepatitis in hepatitis C virus(HCV)-infected patients with intense interface hepatitis.METHODS:Among 1759 patients with hepatitis C submitted to liver biopsy,92(5.2%) presented intense interface hepatitis.These patients were evaluated regarding the presence of antinuclear antibody(ANA),anti-smooth muscle antibody(SMA) and anti-liver/kidney microsomal antibody(LKM-1),levels of γ-globulin and histological findings related to autoimmune hepatitis(plasma cell infiltrate and presence of rosettes).RESULTS:Among patients with hepatitis C and intense interface hepatitis there was a low prevalence of autoantibodies(ANA=12%,SMA=5%,LKM-1=0%) and the median γ-globulin level was within the normal range.Typical histological findings of autoimmune disease were observed in only two cases(2%).After applying the score for diagnosis of autoimmune hepatitis,only one patient was classified with a definitive diagnosis of autoimmune hepatitis.Since overlap with autoimmune hepatitis was not the explanation for the intense necroinflammatory activity in patients with chronic hepatitis C we sought to identify the variables associated with this finding.The presence of intense interface hepatitis was associated with more advanced age,both at the time of infection and at the time of the biopsy,and higher prevalence of blood transfusion and alcohol abuse.CONCLUSION:Although possible,overlap with autoimmune hepatitis is a very rare association in HCV-infected patients with intense interface hepatitis,an unusual presentation which seems to be related to other host variables.Rosilene G Badiani Vitória Becker Renata M Perez Carla AL Matos Lara B Lemos Valéria P Lanzoni Luis Eduardo C Andrade Alessandra Dellavance Antonio Eduardo B Silva Maria Lucia G Ferraz 2010World Journal of Gastroenterology2010,16,29:7
15土壤中的生物多样性与生态系统功能显示文摘我们回顾了目前关于土壤生物多样性及其在生态系统过程中的作用、对于人类目标的重要性及对胁迫和扰动的恢复能力等的研究进展。现存物种的数量远远大于人们已经描述的数量,即使是对于肉眼可见的分类群也是如此。而且也普遍缺乏在生物地理学上的综合描述。迫切需要在分类学和对新一代系统科学家培训上做更大努力。尤其是应当集中致力于就我们所知。对生态系统功能起关键作用的土壤生物类群方面。为了确定这种类群,需要对土壤生物区系的影响圈(sphere of Influence,SOI),如根的生物区系、有机物质破碎者(shredder)和土壤生物扰动者(bioturbator)加以识别,这些影响圈比如可能通过与植物的相互作用而控制着生态系统的过程。在这些SOI中,我们分析出了土壤有机体的功能类群。最迫切需要研究的问题是将物种按功能类群进行区分,并确定功能类群中的物种冗余。这种迫切性是根据为阐述与集约化农业、森林扰动、环境污染和全球环境变化有关的土壤功能丧失程度的需要而确定的。目前认为最处于危险的土壤生物区系是那些大型动物群的有机物破碎者、土壤生物扰动者、某些专门的细菌(如硝化细菌和固氮菌)以及形成真菌的菌根中贫乏物种的功能类群。在开展这些优先性研究时,需要使用长期的和大尺度的田间试验,以及地理统计学和地理信息系统等现代方法进行试验研究。Lijbert Brussaard Val M.Behan-Pelletier David E.Bignell Valerie K.Brown Wim Didden Patrica Folgarait Carlos Fragoso Diana Wall Freckman Vadakattu V.S.R.Gupta Tsutomu Hattori's David L.Hawkworth Carole Klopatek Patric Lavelle David W.Malloch Josef Rusek Bengt Sderstrom James M.Tiedje Ross A.Virginia 闵庆文 1997人类环境杂志1997,26,8:6
16Assessment of liver ablation using cone beam computed tomography显示文摘AIM: To investigate the feasibility and accuracy of cone beam computed tomography(CBCT) in assessing the ablation zone after liver tumor ablation.METHODS: Twenty-three patients(17 men and 6 women, range: 45-85 years old, mean age 65 years) with malignant liver tumors underwent ultrasoundguided percutaneous tumor ablation [radiofrequency(n = 14), microwave(n = 9)] followed by intravenous contrast-enhanced CBCT. Baseline multidetector computed tomography(MDCT) and peri-procedural CBCT images were compared. CBCT image quality was assessed as poor, good, or excellent. Image fusion was performed to assess tumor coverage, and quality of fusion was rated as bad, good, or excellent. Ablation zone volumes on peri-procedural CBCT and post-procedural MDCT were compared using the nonparametric paired Wilcoxon t-test.RESULTS: Rate of primary ablation effectiveness was 100%. There were no complications related to ablation. Local tumor recurrence and new liver tumors were found 3 mo after initial treatment in one patient(4%). The ablation zone was identified in 21/23(91.3%) patients on CBCT. The fusion of baseline MDCT and peri-procedural CBCT images was feasible in all patients and showed satisfactory tumor coverage(at least 5-mm margin). CBCT image quality was poor, good, and excellent in 2(9%), 8(35%), and 13(56%), patients respectively. Registration quality between periprocedural CBCT and post-procedural MDCT images was good to excellent in 17/23(74%) patients. The median ablation volume on peri-procedural CBCT and post-procedural MDCT was 30 cm3(range: 4-95 cm3) and 30 cm3(range: 4-124 cm3), respectively(P-value > 0.2). There was a good correlation(r = 0.79) between the volumes of the two techniques. CONCLUSION: Contrast-enhanced CBCT after tumor ablation of the liver allows early assessment of the ablation zone.Mohamed Abdel-Rehim Maxime Ronot Annie Sibert Valérie Vilgrain 2015World Journal of Gastroenterology2015,21,2:6
17Helicobacter pylori and EBV in gastric carcinomas:Methylation status and microsatellite instability显示文摘AIM:To verify the methylation status of CDH1, DAPK, COX2, hMLH1 and CDKN2A genes and to evaluate their association with Helicobacter pylori (H. pylori)-cagA+ and Epstein Barr virus (EBV) infections in gastric adenocarcinomas.METHODS: Methylation-specific PCR (MSP) assay was performed in 89 primary gastric carcinomas (intestinal and diffuse types). Microsatellite instability (MSI) analysis was performed using the BAT26 primer set and PCR products were analyzed with the ABI PRISM 3100 Genetic Analyzer using Genescan 3.7 software (Applied Biosystems). Detection of H. pylori and genotyping were performed by PCR, using specifi c primers for ureaseC and cagA genes. The presence of EBV was assessed by in situ hybridization. Statistical analyses were performed using the χ2 or Fisher's exact test.RESULTS: The most frequent hypermethylated gene was COX-2 (63.5%) followed by DAPK (55.7%), CDH1 (51%), CDKN2A (36%) and hMLH1 (30.3%). Intestinal and diffuse adenocarcinomas showed different methylation profiles and there was an association between methylation of E-CDH1 and H. pylori-cagA+ in the intestinal adenocarcinoma type. MSI was correlated with hMLH1 methylation. There was an inverse correlation between DAPK hypermethylation and MSI.CONCLUSION: We found a strong association between CDH1 methylation and H. pylori-cagA+ in intestinal-type gastric cancer, association of MSI and better prognosis and an heterogeneous COX-2 overexpression.Adriana Camargo Ferrasi Nídia Alice Pinheiro Silvia Helena Barem Rabenhorst Otávia Luisa Caballero Maria Aparecida Marchesan Rodrigues Fabrício de Carvalho Celso Vieira de Souza Leite Marcia Valéria Pitombeira Ferreira Marcos Aurélio Pessoa Barros Maria Inês de Moura Campos Pardini 2010World Journal of Gastroenterology2010,16,3:6
18Evolution of indications and results of liver transplantation in Europe. A report from the European Liver Transplant Registry (ELTR)显示文摘René Adam Vincent Karam Valérie Delvart John O’Grady Darius Mirza Jurgen Klempnauer Denis Castaing Peter Neuhaus Neville Jamieson Mauro Salizzoni Stephen Pollard Jan Lerut Andreas Paul Juan Carlos Garcia-Valdecasas Fernando San Juan Rodríguez Andrew Burro 2012Journal of Hepatology2012,,3:6
19Bone marrow-derived monocyte infusion improves hepatic fibrosis by decreasing osteopontin,TGF-β1,IL-13 and oxidative stress显示文摘AIM To evaluate the therapeutic effects of bone marrowderived CD11b+CD14+ monocytes in a murine model of chronic liver damage. METHODS Chronic liver damage was induced in C57BL/6 mice by administration of carbon tetrachloride and ethanol for 6 mo. Bone marrow-derived monocytes isolated by immunomagnetic separation were used for therapy. The cell transplantation effects were evaluated by morphometry,biochemical assessment,immunohistochemistry and enzyme-linked immunosorbent assay. RESULTS CD11b+CD14+ monocyte therapy significantly reduced liver fibrosis and increased hepatic glutathione levels. Levels of pro-inflammatory cytokines,including tumor necrosis factor-α,interleukin(IL)-6 and IL-1β,in addition to pro-fibrotic factors,such as IL-13,transforming growth factor-β1 and tissue inhibitor of metalloproteinase-1 also decreased,while IL-10 and matrix metalloproteinase-9 increased in the monocytetreated group. CD11b+CD14+ monocyte transplantation caused significant changes in the hepatic expression of α-smooth muscle actin and osteopontin. CONCLUSION Monocyte therapy is capable of bringing about improvement of liver fibrosis by reducing oxidative stress and inflammation,as well as increasing antifibrogenic factors.Veruska Cintia Alexandrino de Souza Thiago Almeida Pereira Valéria Wanderley Teixeira Helotonio Carvalho Maria Carolina Accioly Brelaz de Castro Carolline Guimaraes D’assuncao Andreia Ferreira de Barros Camila Lima Carvalho Virgínia Maria Barros de Lorena Vláudia Maria Assis Costa Alvaro Aguiar Coelho Teixeira Regina Celia Bressan Queiroz Figueiredo Sheilla Andrade de Oliveira 2017World Journal of Gastroenterology2017,23,28:6
20Diffuse intestinal ganglioneuromatosis an uncommon manifestation of Cowden syndrome显示文摘Diffuse intestinal ganglioneuromatosis is a hamartomatous polyposis characterized by a disseminated, intramural or transmural proliferation of neural elements involving the enteric plexuses. It has been associated with MEN Ⅱ, neurofibromatosis type 1 and hamartomatous polyposis associated with phosphatase and tensin homolog mutation. We report the case of a female patient with a history of a breast and endometrial tumor who presented in a colonoscopy performed for rectal bleeding diffuse ganglioneuromatosis, which oriented the search for other characteristic findings of Cowden syndrome given the personal history of the patient. The presence of an esophagogastric polyposis was also noted. Cowden syndrome is characterized by skin lesions, but it is rarely diagnosed by these lesions, because they are usually overlooked. Intestinal polyposis is not a major diagnostic criterion but it is very useful for early diagnosis. The combination of colonic polyposis and glucogenic acanthosis should orient the diagnosis to Cowden syndrome.Maria Teresa Herranz Bachiller Jesus Barrio Andrés Fernando Pons Noelia Alcaide Suárez Rafael Ruiz-Zorrilla Lorena Sancho del Val Sara Lorenzo Pelayo Carlos De La Serna Higuera Ramon Atienza Sánchez Manuel Perez Miranda 2013World Journal of Gastrointestinal Oncology2013,5,2:5
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