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| 1 | Fatty liver disease in severe obese patients:Diagnostic value of abdominal ultrasound显示文摘AIM:To evaluate the sensitivity and specificity of abdominal ultrasound (US) for the diagnosis of hepatic steatosis in severe obese subjects and its relation to histological grade of steatosis. METHODS: A consecutive series of obese patients, who underwent bariatric surgery from October 2004 to May 2005, was selected. Ultrasonography was performed in all patients as part of routine preoperative time and an intraoperative wedge biopsy was obtained at the beginning of the bariatric surgery. The US and histological findings of steatosis were compared, considering histology as the gold standard. RESULTS: The study included 105 patients. The mean age was 37.2 ± 10.6 years and 75.2% were female. The histological prevalence of steatosis was 89.5%. The sensitivity and specificity of US in the diagnosis of hepatic steatosis were, respectively, 64.9% (95% CI: 54.9-74.3) and 90.9% (95% CI: 57.1-99.5). The positive predictive value and negative predictive value were, respectively, 98.4% (95% CI: 90.2-99.9) and 23.3% (95% CI: 12.3-39.0). The presence of steatosis onUS was associated to advanced grades of steatosis on histology (P = 0.016). CONCLUSION: Preoperative abdominal US in our series has not shown to be an accurate method for the diagnosis of hepatic steatosis in severe obese patients. Until another non-invasive method demonstrates better sensitivity and specificity values, histological evaluation may be recommended to these patients undergoing bariatric surgery. | Alessandro de Moura Almeida Helma Pinchemel Cotrim Daniel Batista Valente Barbosa Luciana Gordilho Matteoni de Athayde Adimeia Souza Santos Almir Galvo Vieira Bitencourt Luiz Antonio Rodrigues de Freitas Adriano Rios Erivaldo Alves | 2008 | World Journal of Gastroenterology2008，14，9： | 10 |
| 2 | Two-dimensional control of light with light on metasurfaces显示文摘The ability to control the wavefront of light is fundamental to focusing and redistribution of light,enabling many applications from imaging to spectroscopy.Wave interaction on highly nonlinear photorefractive materials is essentially the only established technology allowing the dynamic control of the wavefront of a light beam with another beam of light,but it is slow and requires large optical power.Here we report a proof-of-principle demonstration of a new technology for two-dimensional(2D)control of light with light based on the coherent interaction of optical beams on highly absorbing plasmonic metasurfaces.We illustrate this by performing 2D all-optical logical operations(AND,XOR and OR)and image processing.Our approach offers diffractionlimited resolution,potentially at arbitrarily-low intensity levels and with 100 THz bandwidth,thus promising new applications in space-division multiplexing,adaptive optics,image correction,processing and recognition,2D binary optical data processing and reconfigurable optical devices. | Maria Papaioannou Eric Plum João Valente Edward TF Rogers Nikolay I Zheludev | 2016 | Light(Science & Applications)2016，5，1： | 3 |
| 3 | Conservative 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 Briceo Delgado Francisco Javier Padillo Pedro López-Cillero Sebastián Rufián Pea | 2008 | World Journal of Gastroenterology2008，14，12： | 2 |
| 4 | Nonalcoholic fatty liver disease in asymptomatic Brazilian adolescents显示文摘AIM:To evaluate the prevalence and clinical characteristics of Nonalcoholic fatty liver disease(NAFLD) among asymptomatic Brazilian adolescents. METHODS:Transversal observational study included asymptomatic adolescents with central obesity from private and public schools in Salvador-Bahia,northeastern Brazil.The children answered a questionnaire that included age,gender,race,and medical history,and were submitted to a complete physical exam and abdominal ultrasound.Biochemical exams included:ALT,AST,GGT,C reactive protein(CRP),fasting glucose,insulin,cholesterol and triglycerides.Criteria for NAFLD included:the presence of steatosis in ultrasound and/or high level of ALT,negative or occasional historic of intake of alcohol(≤140 g/wk),negative investigation for hepatitis A,B,C,auto-immune hepatitis,Wilson disease and hemochromatosis.RESULTS:From October,2005 to October,2006,the study included 1801 subjects between 11 and 18 years of age and a mean age of 13.7±2.0 years.One hundred ninety-nine had central obesity.The prevalence of NAFLD was 2.3%,most of whom were male and white.Insulin resistance(IR)was observed in 22.9% of them and had positive correlations with ALT and GGT(P<0.05).Elevated CRP was observed in 6.9% of the cases;however,it was not associated with WC,IR or liver enzymes. CONCLUSION:The prevalence of NAFLD in Brazilian adolescents was low.The ethnicity may have influence this frequency in the population studied,which had a large proportion of African descendents. | Raquel Rocha Helma Pinchemel Cotrim Almir Galvo Vieira Bitencourt Daniel Batista Valente Barbosa Adméia Souza Santos Alessandro de Moura Almeida Bruno Cunha Isabel Guimares | 2009 | World Journal of Gastroenterology2009，15，4： | 2 |
| 5 | Glycine max (L.) Merr., Vigna radiata L. and Medicago sativa L. sprouts: A natural source of bioactive compounds显示文摘 | Luís R. Silva Maria J. Pereira Jessica Azevedo Rui F. Gon?alves Patrícia Valent?o Paula Guedes de Pinho Paula B. Andrade | 2013 | Food Research International2013，，1： | 2 |
| 6 | Large-pore apertures in a series of metal-organic frameworks显示文摘 | Deng H Grunder S Cordova K E Valente C Furukawa H Hmadeh M Gandara F Whalley A C Liu Z Asahina S Kazumori H O'Keeffe M Terasaki O Stoddart J F Yaghi O M | 2012 | Science2012，336，： | 1 |
| 7 | Phenolic profile of Douro wines and evaluation of their NO scavenging capacity in LPS-stimulated RAW 264.7 macrophages显示文摘 | Manuel J. Rebelo Carla Sousa Patrícia Valent?o Rosa Rego Paula B. Andrade | 2014 | Food Chemistry2014，，： | 1 |
| 8 | Thyroid hormone replace- ment for subclinical hypothyroidism 显示文摘 | Villar HC Saconato H Valente O | 2007 | Cochrane Database Syst Rev2007，18，00： | 1 |
| 9 | Cardiac image fusion from stand-alone SPECT and CT: clinical experience显示文摘 | Gaemperli O Schepis T Valente I | 2007 | J Nucl Med2007，48，5： | 1 |
| 10 | Interactions between n-octyl and n-nonyl β-d-glucosides and α-and β-cyclodextrins as seen by self-diffusion NMR显示文摘 | Valente A J M Nilsson M Soderman O | | 0，，01： | 1 |
| 11 | Studies on the adsorption and kinetics of p hotodegradation of a model compound for heterogenous photocatalysis onto TiO2 显示文摘 | Valente J P S Padiha P M Florentino A O | 2006 | Chemosphere2006，64，： | 1 |
| 12 | Catastrophic Wear in a Metal-On-Ceramic Total Hip Arthroplasty显示文摘 | Juan Ramon Valentí Javier Del Río Santiago Amillo | 2007 | The Journal of Arthroplasty2007，，6： | 1 |
| 13 | Sequencing as a tool in yeast molecular taxonomy显示文摘 | Valente P Ramos J P Leoncini O | 1999 | Canadian Journal of Micro- biology1999，45，11： | 1 |
| 14 | Ultrasonography in the diagnosis of ovarian and endometrial carcinoma显示文摘 | VALENT S OLáH O SáRA L | | 0，，47： | 1 |
| 15 | Volatile profiling of Ficus carica varieties by HS-SPME and GC–IT-MS显示文摘 | Andreia P. Oliveira Luís R. Silva Paula Guedes de Pinho Angel Gil-Izquierdo Patrícia Valent?o Branca M. Silva José A. Pereira Paula B. Andrade | 2010 | Food Chemistry2010，，2： | 1 |
| 16 | Detection of paraffin deposition inside a draining tubulation by the compton scattering technique显示文摘 | Lopes R T Valent e C M De Jesus E F O | 1997 | Appl Radiat lsot1997，48，1012： | 1 |
| 17 | Interactions between n-octyl and n-nonyl β-D-glucosides and α-and β-cyclodextrins as seen by self-diffusion NMR显示文摘 | Valente A J M Nilsson M Soderman O | 2005 | J Colloid Interface Sci2005，281，： | 1 |
| 18 | Thyroid hormone replacement for subclinical hypothyroidism 显示文摘 | Villar HC Saconato H Valente O | 2007 | Co-chrane Database SystRev2007，，00： | 1 |
| 19 | Efficacy of risedronate on clinical vertebral fractures within six months显示文摘 | Roux C Seeman E Eastell R Adachi J Jackson RD Felsenberg D Songcharoen S Rizzoli R Di Munno O Horlait S Valent D Watts NB | | 0，，： | 1 |
| 20 | Studies on the adsorption and kinetics of photodegradation of a model compound for heterogeneous photocatalysis onto TiO2 显示文摘 | Valente J P S Padilha P M Florentiuo A O | 2006 | Chemosphere2006，64，7： | 1 |
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