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1Diagnosis and treatment of hepatocellular carcinoma: An update显示文摘Hepatocellular carcinoma(HCC) is one of the most common malignancies leading to high mortality rates in the general population; in cirrhotic patients, it is the primary cause of death. The diagnosis is usually delayed in spite of at-risk population screening recommendations, i.e., patients infected with hepatitis B or C virus. Hepatocarcinogenesis hinges on a great number of genetic and molecular abnormalities that lead to tumor angiogenesis and foster their dissemination potential. The diagnosis is mainly based on imaging studies such as computed tomography and magnetic resonance, in which lesions present a characteristic classical pattern of early arterial enhancement followed by contrast medium 'washout' in late venous phase. On occasion, when imaging studies are not conclusive, biopsy of the lesion must be performed to establish the diagnosis. The Barcelona Clinic Liver Cancer staging method is the most frequently used worldwide and recommended by the international guidelines of HCC management. Currently available treatments include tumor resection, liver transplant, sorafenib and locoregional therapies(alcoholization, radiofrequency ablation, chemoembolization). The prognosis of hepatocarcinoma is determined according to the lesion's stage and in cirrhotic patients, on residual liver function. Curative treatments, such as liver transplant, are sought in patients diagnosed in early stages; patients in more advanced stages, were not greatly benefitted by chemotherapy in terms of survival until the advent of target molecules such as sorafenib.Javier Tejeda-Maldonado Ignacio García-Juárez Jonathan Aguirre-Valadez Adrián González-Aguirre Mario Vilatobá-Chapa Alejandra Armengol-Alonso Francisco Escobar-Penagos Aldo Torre Juan Francisco Sánchez-ávila Diego Luis Carrillo-Pérez 2015World Journal of Hepatology2015,7,3:22
2Differential colorectal carcinogenesis:Molecular basis and clinical relevance显示文摘Colorectal cancer(CCR) is one of the most frequent cancers in developed countries.It poses a major public health problem and there is renewed interest in understanding the basic principles of the molecular biology of colorectal cancer.It has been established that sporadic CCRs can arise from at least two different carcinogenic pathways.The traditional pathway,also called the suppressor or chromosomal instability pathway,follows the Fearon and Vogelstein model and shows mutation in classical oncogenes and tumour suppressor genes,such as K-ras,adenomatous polyposis coli,deleted in colorectal cancer,or p53.Alterations in the Wnt pathway are also very common in this type of tumour.The second main colorectal carcinogenesis pathway is the mutator pathway.This pathway is present in nearly 15% of all cases of sporadic colorectal cancer.It is characterized by the presence of mutations in the microsatellite sequences caused by a defect in the DNA mismatch repair genes,mostly in hMLH1 or hMSH2.These two pathways have clear molecular differences,which will be reviewed in this article,but they also present distinct histopathological features.More strikingly,their clinical behaviours are completely different,having the 'mutator' tumours a better outcome than the 'suppressor' tumours.Alberto Morán Paloma Ortega Carmen de Juan Tamara Fernández-Marcelo Cristina Frías Andrés Sánchez-Pernaute Antonio José Torres Eduardo Díaz-Rubio Pilar Iniesta Manuel Benito 2010World Journal of Gastrointestinal Oncology2010,2,3:5
3Prevalence of vacA, cagA and babA2 genes in Cuban Helicobacter pylori isolates显示文摘AIM: To investigate the prevalence of vacuolating cytotoxin (vacA), cytotoxin associated gene A (cagA) and blood adhesion binding antigen (babA2) genotypes of Helicobacter pylori (H pylori) isolates from Cuban dyspeptic patients. METHODS: DNA was extracted from H pylori-positive cultures taken from 130 dyspeptic patients. Genotyping was performed by PCR, using specifi c primers for vacA (s1, s2, m1, m2), cagA and babA2 genes. Endoscopic observations and histological examinations were used to determine patient pathologies. RESULTS: vacA alleles s1 , s2 , m1 and m2 were detected in 96 (73.8%), 34 (26.2%), 75 (57.7%) and 52 isolates (40%), respectively, while the cagA gene was detected in 95 isolates (73.2%). One hundred and seven isolates (82.3%) were babA2-positive. A signif icant correlation was observed between vacAs1m1 and cagA and between vacAs1m1 and babA2 genotypes (P < 0.001 and P < 0.05, respectively) and between babA2 genotype and cagA status (P < 0.05); but, no correlation was observed between vacAs1 and babA2 genotypes. Eighty fi ve (65.4%) and 73 (56.2%) strains were type 1 (vacAs1-cagA-positive) and 'triple- positive' (vacAs1-cagA-babA2-positive), respectively, and their presence was significantly associated with duodenal ulcer (P < 0.01 and P < 0.001, respectively). CONCLUSION: The distribution of the main virulence factors in the Cuban strains in this study resembled that of the Western-type strains, and the more virulent H pylori isolates were signifi cantly associated with duodenal ulcer, ulcer disease being the worst pathology observed in the group studied.Lino E Torres Karelia Melián Arlenis Moreno Jordis Alonso Carlos A Sabatier Mayrín Hernández Ludisleydis Bermúdez Boris L Rodríguez 2009World Journal of Gastroenterology2009,15,2:4
4Diabetic gastroenteropathy:An underdiagnosed complication显示文摘This article is an extensive review that provides an update on the pathophysiology,symptoms,diagnosis,and treatment of diabetic gastroenteropathy.There is no reported prevalence,but it has been described that patients with type 1 diabetes have a cumulative incidence at 10 years of 5.2%,and type 2 patients,1%.Also,in the group of type 1 diabetes,it has been observed that women are more likely to present this condition(5.8%vs 3.5%).Many factors are associate with its development(e.g.,hyperglycemia,vagal dysfunction,loss of expression of neural nitric oxide synthase in the myenteric plexus,alterations in the Cajal interstitial cell network,and oxidative stress).Gastrointestinal discomfort could be perceived 70% higher in diabetic patients,describing that 25%of diabetic patients experience gastrointestinal symptoms.Diabetic enteropathy could affect any portion of the gastrointestinal tract,but esophageal alterations were described in more than 60% of diabetic patients,also 60% of them present constipation,and 20%,diarrhea.Gastric emptying scintigraphy is useful to evaluate gastroparesis,therefore,gastric retention of more than 60%at 2 h has a sensitivity of 100% and specificity of 20% for diagnosis;however,other studies such as breath tests,with a sensitivity of 89% and a specificity of 80%,or the endoscopic capsule contribute to the diagnosis.There is no cure;however,management must be multidisciplinary,focused on slowing the progression of diabetic gastroenteropathy,reducing symptoms,and restoring function;that includes nutritional recommendation,maintain glucose levels kept below 180 mg/dL,use of prokinetics,anti-emetics;nowadays,it has been special interest in surgical treatment,such as pyloroplasty,also gastric electrical stimulation appears to be another alternative.Marcio JoséConcepción Zavaleta Jhean Gabriel Gonzáles Yovera Diego Martín Moreno Marreros Luciana del Pilar Rafael Robles Kely Roxana Palomino Taype Karen Nohelly Soto Gálvez Luis Fernando Arriola Torres Julia Cristina Coronado Arroyo Luis Alberto Concepción Urteaga 2021World Journal of Diabetes2021,12,6:4
5Management of Helicobacter pylori infection in Latin America: A Delphi technique-based consensus显示文摘AIM: To optimize diagnosis and treatment guidelines for this geographic region, a panel of gastroenterologists, epidemiologists, and basic scientists carried out a structured evaluation of available literature.METHODS: Relevant questions were distributed among the experts, who generated draft statements for consideration by the entire panel. A modified three-round Delphi technique method was used to reach consensus. Critical input was also obtained from representatives of the concerned medical community. The quality of the evidence and level of recommendation supporting each statement was graded according to United States Preventive Services Task Force criteria.RESULTS: A group of ten experts was established. The survey included 15 open-ended questions that were distributed among the experts, who assessed the articles associated with each question. The levels of agreement achieved by the panel were 50% in the first round, 73.3% in the second round and 100% in the third round. Main consensus recommendations included:(1) when available, urea breath and stool antigen test(HpSA) should be used for non-invasive diagnosis;(2) detect and eradicate Helicobacter pylori(H. pylori) in all gastroscopy patients to decrease risk of peptic ulcer disease, prevent o retard progression in patients with preneoplastic lesions, and to prevent recurrence in patients treated for gastric cancer;(3) further investigate implementation issues and health outcomes of H. pylorieradication for primary prevention of gastric cancer in high-risk populations;(4) prescribe standard 14-d triple therapy or sequential therapy for first-line treatment;(5) routinely assess eradication success post-treatment in clinical settings; and(6) select second- and third-line therapies according to antibiotic susceptibility testing.CONCLUSION: These achievable steps toward better region-specific management can be expected to improve clinical health outcomes.Antonio Rollan Juan Pablo Arab M Constanza Camargo Roberto Candia Paul Harris Catterina Ferreccio Charles S Rabkin Juan Cristóbal Gana Pablo Cortés Rolando Herrero Luisa Durán Apolinaria García Claudio Toledo Alberto Espino Nicole Lustig Alberto Sarfatis Catalina Figueroa Javier Torres Arnoldo Riquelme 2014World Journal of Gastroenterology2014,20,31:2
6Conservative management of perforated duodenal diverticulum: A case report and review of the literature显示文摘Duodenal diverticula are a relatively common condition. They are asymptomatic, unless they become complicated, with perforation being the rarest but most severe complication. Surgical treatment is the most frequently performed approach. We report the case of a patient with a perforated duodenal diverticulum, which was diagnosed early and treated conservatively with antibiotics and percutaneous drainage of secondary retroperitoneal abscesses. We suggest this method could be an acceptable option for the management of similar cases, provided that the patient is in good general condition and without septic signs.David Martínez-Cecilia Alvaro Arjona Sánchez Manuel Gómez álvarez Eva Torres Tordera Antonio Luque Molina Victor Valentí Azcárate Javier Briceo Delgado Francisco Javier Padillo Pedro López-Cillero Sebastián Rufián Pea 2008World Journal of Gastroenterology2008,14,12:2
7Toll‐Like Receptors and Cytokines are Upregulated during H elicobacter pylori Infection in Children显示文摘Hugo Lagunes‐Servin Javier Torres Carmen Maldonado‐Bernal Martha Pérez‐Rodríguez Sara Huerta‐Yépez Armando Madrazo de la Garza Leopoldo Mu?oz‐Pérez Lourdes Flores‐Luna Guillermo Ramón‐García Margarita Camorlinga‐Ponce 2013Helicobacter2013,,6:2
8Aqueous extract of Ocimum tenuiflorum decreases levels of blood glucose in induced hyperglycemic tilapia(Oreochromis niloticus)显示文摘Objective:To evaluate,in hyperglycemic tilapia[Oreochromis niloticus(O.niloticus)].the effect of this aqueous extract on blood glucose levels.Methods:The hyperglycemia in O.niloticus was induced by adding glucose to fish pond water.An aqueous extract of Ocimum tenuiflorum (O.tenuiflorum) was prepared by boiling fresh leaves and the doses of 0,40,80,200 and 400 mg per liter of pond water were tested.Results:The blood sugar concentration for tilapia with hyperglycemic induced was an average of 50%higher than the control group.The blood glucose levels in tilapia after the induction of hyperglycemia were higher than the control group for 90 min after the treatment.The treatment with the aqueous extract of O.tenuiflorum dropped the serum glucose level of hyperglycemic tilapia until it was similar to that of the control group and was dose dependent.Conclusions:The results indicated that O.tenuiflorum was endowed with anti-hyperglycemic activity.To our knowledge,this is the first report on the use of fish as a diabetes model to test natural extracts from plants.Amilcar Arenal Leonardo Martín Nestor M Castillo Dainier de la Torre Ubaldo Torres Reinaldo Gonzlez 2012Asian Pacific Journal of Tropical Medicine2012,5,8:2
9呼吸门控微CT对慢性肺炎小鼠模型的纵向研究显示文摘目的评价呼吸门控微CT在探测和监视慢性肺炎小鼠模型中进行量化分析的可行性,并将影像测量与肺功能测试、组织形态观察相比较。方法X.Artaechevarria D.Blanco D.Pérez-Martín G.de Biurrun L.M.Montuenga J.P.de Torres 张晓东 2011国际医学放射学杂志2011,,1:2
10星形胶质细胞转录组分析指导的脑卒中靶标鉴定显示文摘星形胶质细胞支持正常的脑功能,但在卒中等病理条件下,星形胶质细胞反应性激活,其也可能参与神经退行性改变。反应性星形胶质细胞增生对机体有益或有害,与环境背景有关,但其分子基础仍未得到充分解释。借助RiboTag技术,我们在特异性地短暂性大脑中动脉闭塞(tMCAO)72h后的小鼠星形胶质细胞中,纯化翻译mRNA,构建卒中特异性星形胶质细胞翻译组数据库。我们发现,与对照组脑组织相比,tMCAO后的反应性星形胶质细胞显示与A2表型相关的转录物的富集,这与神经保护相关。星形胶质细胞也会上调大量潜在的神经毒性基因。我们共鉴定了1003个基因和38个转录因子的差异表达,其中Stat3,Sp1和Spi1变化最明显。为了进一步探索Stat3介导的通路对卒中发病机制的影响,我们选择星形胶质细胞特异性条件性缺失Stat3的小鼠制造tMCAO模型,发现这些小鼠的局灶性缺血卒中体积减少,且梗死72h后小鼠的运动结果改善。综上所述,本研究扩展了新兴的星形胶质细胞特异性靶向卒中治疗数据库,并肯定了星形胶质细胞是脑功能的关键保障细胞。Rakers C Schleif M Blank N Matu?ková H Ulas T H?ndler K Torres SV Schumacher T Tai K Schultze JL Jackson WS Petzold GC 聂昊 2019神经损伤与功能重建2019,14,6:2
11Statistical algorithm for nonuniformity correction in focal-plane arrays显示文摘Hayat M M Torres S N Armstrong E E 1999Applied Optics1999,38,:1
12Seasonal sea level cycle in the Caribbean Sea显示文摘Rieardo R Torres Michael N Tsimplis 2012Journal of Geophysical Research2012,117,:1
13Procalcito- nin as a prognostic biomarker of severe sepsis and septic shock 显示文摘AZEVEDO J R TORRES O J CZECZKO N G 2012RevColBrasCir2012,39,6:1
14Optical coherence tomography enhanced depth imaging of choroidal tumors显示文摘Torres VL Brugnoni N Kaiser PK 2011Am J Ophthalmol2011,151,4:1
15Magnetic resonance imaging abnormalities in familial temporal lobe epilepsy with au-ditory auras显示文摘Kobayashi E Santos N F Torres F R 2003Arch Neurol2003,60,:1
16Soy protein affects serum insulin and hepatic SREPB-1 mRNA and reduces fatty liver in rats显示文摘Ascencio C Torres N Isoard-Acosta F 2004J Nutr2004,134,3:1
17Molecular identification of new varieties of Nierembergia linariaefolia(Graham),a native Argentinean ornamental plant显示文摘Escandón A.S Zelener N de la Torre M.P Soto S 0,,02:1
18Analysis of the strain transfer in a new FBG sensor for structural health monitoring显示文摘Torres B Payá-Zaforteza I Calderón P A 2011Engineering Structures2011,33,2:1
19Gold (Ⅲ) biosorption and bioreduction with the brown alga Fueus vesiculosus 显示文摘Mata Y N Torres E B16zquez M L Ballester A GonzOlez F Mufioz J A 2009Journal of Hazardous Materials2009,166,23:1
20Effectiveness of cinacalcet in patients with recurrent/persistent secondary hyperparathyroidism following parathyroidectomy:results of the ECHO study显示文摘Zitt E Rix M Ure(n)a Torres P 0,,:1
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