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Impact of mass screening for gluten-sensitive enteropathy in working population

World Journal of Gastroenterology 2009年第11期15卷 1331-1338页

作者： meritxell mariné Fernando Fernández-Baares Montserrat Alsina Carme Farré Montserrat Cortijo Rebeca Santaolalla Antonio Salas Margarita Tomàs Elias Abugattas Carme Loras Ingrid Ordás Josep M Viver Maria Esteve Department of Gastroenterology University Hospital of Mútua de TerrassaResearch Foundation Mútua de TerrassaUniversity of Barcelona08221 TerrassaCataloniaSpain Department of Immunology(Catlab) University Hospital of Mútua de TerrassaResearch Foundation Mútua de TerrassaUniversity of Barcelona08221 TerrassaCataloniaSpain Department of Biochemistry Sant Joan de DéuHospitalEsplugues08950 CataloniaSpain Occupational Health Department Egarsat(Prevention Society)Sant Cugat del Vallès08173 CataloniaSpain Department of Pathology University Hospital of Mútua de TerrassaResearch Foundation Mútua de TerrassaUniversity of Barcelona08221 TerrassaCataloniaSpain

AIM:To assess:(1)frequency and clinical relevanceof gluten sensitive enteropathy(GSE)detected by serology in a mass screening program;(2)sensitivity of antitransglutaminase(tTGA)and antiendomysium antibodies(EmA);and(3)adherence to gluten-free diet(GFD)and follow-up. METHODS:One thousand,eight hundred and sixtyeight subjects recruited from an occupational health department underwent analysis for tTGA and EmA and, if positive,duodenal biopsy,DQ2/DQ8 genotyping, clinical feature recording,blood tests,and densitometry were ***>98%of individuals had tTGA <2 U/mL,this value was established as the cut-off limit of normality and was considered positive when confirmed twice in the same *** to a GFD and follow up were registered. RESULTS:Twenty-six(1.39%)subjects had positive tTGA and/or EmA,and 21 underwent biopsy:six Marsh Ⅲ(oneⅢa,fourⅢb,oneⅢc),nine MarshⅠand six Marsh 0(frequency of GSE 1:125).The sensitivity of EmA for GSE was 46.6%(11.1%for MarshⅠ,100% for MarshⅢ),while for tTGA,it was 93.3%(88.8% for MarshⅠ,100%for MarshⅢ).All 15 patients with abnormal histology had clinical features related to ***ⅠandⅢsubjects had more abdominal pain than Marsh 0(P=0.029),and a similar trend was observed for distension and *** differences in the percentage of osteopenia were found between MarshⅠandⅢ(P=0.608).Adherence to follow-up was 69.2%.Of 15 GSE patients,66.7%followed a GFD with 80%responding to it. CONCLUSION:GSE in the general population is frequent and clinically relevant,irrespective of histological *** is the marker of *** screening programs are useful in identifying patients who can benefit from GFD and follow-up.

关键词： Antitransglutaminase and antiendomysiumantibodies Celiac disease Lymphocytic enteritis Massscreening

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Intraguild predation and competitive displacement between Nesidiocoris tenuis and Dicyphus maroccanus, two biological control agents in tomato pests

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Insect Science 2017年第5期24卷 809-817页

作者： Nadia G. Salas Gervassio meritxell Perez-Hedo Maria G. Luna Alberto Urbaneja Centro de Estudios Parasitol6gicos y de Vectores (CEPAVE -CCT La Plata- CONICET-UNLP) Boulevard 120 el 60 y 64 1900 La PlataArgentina Centro de Proteccion Vegetal y Biotecnologia Instituto Valenciano de Investigaciones Agrarias (IVlA) Unidad Asociada de Entomologia UJI-IVIA Carretera de Moncada - N&quera Km. 4.5 46113 Moncada Valencia Spain Unitat Associada d'Entomologia UJI-IVIA Departament de Ciencies Agr&ries i del Medi Natural Universitat Jaume I UJI Campus del Riu Sec E-12071 Castello de laPlana Spain

Dicyphus maroccanus Wagner and Nesidiocoris tenuis Reuter （Hemiptera： Miridae） are 2 biological control agents in tomatoes. Through the crop seasons, a natural shift in the occurrence of both mirids in favor ofN. tenuis has been observed at the end of the cropping cycle in eastern Spain. To better optimize their conservation, the reasons for the observed change, such as intraguild interactions （IGP） or the influence of environmental conditions, are worth elucidating. To do this, we first studied the IGP of adult females on heterospecific nymphs in the laboratory. We next studied exploitative competition between adults and nymphs of each species when feeding on Ephestia kueniella Zeller （Lepidoptera： Pyralidae） eggs in the laboratory. Finally, to analyze the competitive displacement between both mirids, we conducted a semifield experiment in which both predators were released together. All experiments were conducted at 2 temperature regimes （20 and 25~C）. Adult- to-nymph intraguild interactions occurred only at 25 ~C at very low levels, showing that N. tenuis attacked and consumed a greater proportion ofheterospecific nymphs. Nesidiocoris tenuis was a better competitor than D. maroccanus when feeding on the shared prey in the presence of its heterospecific nymph at 25 ~C. In semifield conditions, N. tenuis showed a competitive advantage over D. maroccanus at both temperatures. We conclude that there is not direct interference between both species, however, N. tenuis has a greater ability to outcompete, since it is best adapted to higher temperatures and it is able to remove food sources for D. maroccanus.

关键词： competition Mediterranean crops Miridae temperature tomato

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Non-cycloplegic spherical equivalent refraction in adults:comparison of the double-pass system,retinoscopy,subjective refraction and a table-mounted autorefractor

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International Journal of Ophthalmology(English edition) 2013年第5期6卷 618-625页

作者： meritxell Vilaseca Montserrat Arjona Jaume Pujol Elvira Peris Vanessa Martìnez Centre for Sensors Instruments and Systems Development(CD6)Technical University of Catalonia University Vision Centre (CUV) Department of Optics and OptometryTechnical University of Catalonia

AIM:To evaluate the accuracy of spherical equivalent(SE) estimates of a double-pass system and to compare it with retinoscopy,subjective refraction and a table mounted ***:Non-cycloplegic refraction was performed on 125 eyes of 65 healthy adults(age 23.5±3.0 years) from October 2010 to January 2011 using retinoscopy,subjective refraction,autorefraction(Auto kerato refractometer TOPCON KR-8100,Japan) and a double pass system(Optical Quality Analysis System,OQAS,Visiometrics S.L.,Spain).Nine consecutive measurements with the double-pass system were performed on a subgroup of 22 eyes to assess *** evaluate the trueness of the OQAS instrument,the SE laboratory bias between the double pass system and the other techniques was ***:The SE mean coefficient of repeatability obtained was *** correlations could be established between the OQAS and the SE obtained with retinoscopy(r=0.956,P<0.001),subjective refraction(r=0.955,P<0.001) and autorefraction(r=0.957,P<0.001).The differences in SE between the double-pass system and the other techniques were significant(P<0.001),but lacked clinical relevance except for retinoscopy;Retinoscopy gave more hyperopic values than the double-pass system-0.51±0.50D as well as the subjective refraction-0.23±0.50D;More myopic values were achieved by means of autorefraction 0.24±0.49D. CONCLUSION:The double-pass system provides accurate and reliable estimates of the SE that can be used for clinical *** technique can determine the correct focus position to assess the ocular optical ***,it has a relatively small measuring range in comparison with autorefractors(-8.00 to +5.00D),and requires prior information on the refractive state of the patient.

关键词： double-pass system optical quality retinoscopy autorefraction subjective refraction accuracy repeatability trueness

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COVID-19 and the gastrointestinal tract:Source of infection or merely a target of the inflammatory process following SARS-CoV-2 infection?

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World Journal of Gastroenterology 2021年第14期27卷 1406-1418页

作者： Jacopo Troisi Giorgia Venutolo meritxell Pujolassos Tanyà Matteo Delli Carri Annamaria Landolfi Alessio Fasano Metabolomics Section Theoreo srl-Spin-off Company of the University of SalernoMontecorvino Pugliano 84090SAItaly Department of Chemistry and Biology“A.Zambelli” University of SalernoFisciano 84084SAItaly European Biomedical Research Institute of Salerno Salerno 84125SAItaly Department of Medicine Surgery and Dentistry“Scuola Medica Salernitana”University of SalernoBaronissi 84081SAItaly Mucosal Immunology and Biology Research Center and Center for Celiac Research Harvard Medical SchoolMassachusetts Gen Hosp ChildrenMucosal Immunology and Biology Research CenterBostonMA 02114United States

Gastrointestinal(GI)symptoms have been described in a conspicuous percentage of coronavirus disease 2019(COVID-19)*** clinical evidence is supported by the detection of viral RNA in stool,which also supports the hypothesis of a possible fecal-oral transmission *** involvement of GI tract in severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection is corroborated by the theoretical assumption that angiotensin converting enzyme 2,which is a SARS-CoV-2 target receptor,is present along the GI *** have pointed out that gut dysbiosis may occur in COVID-19 patients,with a possible correlation with disease severity and with complications such as multisystem inflammatory syndrome in ***,the question to be addressed is whether dysbiosis is a consequence or a contributing cause of SARS-CoV-2 *** such a scenario,pharmacological therapies aimed at decreasing GI permeability may be beneficial for COVID-19 *** the possibility of a fecal-oral transmission route,water and environmental sanitation play a crucial role for COVID-19 containment,especially in developing countries.

关键词： COVID-19 SARS-CoV-2 Gastrointestinal symptoms Gut microbiome Dysbiosis Zonulin Fecal-oral transmission

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Radiation-induced intestinal inflammation

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World Journal of Gastroenterology 2007年第22期13卷 3043-3046页

作者： meritxell Mollà Julián Panés Radioncology Department Instituto Oncologico Teknon Barcelona Spain Gastroenterology Department Hospital Clínic de Barcelona CIBER-EHD Spain

Radiation induces an important inflammatory response in the irradiated organs, characterized by leukocyte infiltration and vascular changes that are the main limiting factor in the application of this therapeutic modality for the treatment of cancer. Recently, a considerable investigative effort has been directed at determining the molecular mechanisms by which radiation induces leukocyte recruitment, in order to create strategies to prevent intestinal inflammatory damage. In these review, we consider current available evidence on the factors governing the process of leukocyte recruitment in irradiated organs, mainly derived from experimental studies, with special attention to adhesion molecules, and their value as therapeutic targets.

关键词： Inflammation Radiation Leukocyte Endothelium Adhesion molecules

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Laccases stabilization with phosphatidylcholine liposomes

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Journal of Biophysical Chemistry 2012年第1期3卷 81-87页

作者： meritxell Martí Andrea Zille Artur Cavaco-Paulo José Luís Parra Luisa Coderch Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) Barcelona Spain

In recent years, there has been an upsurge of interest in enzyme treatment of textile fibres. Enzymes are globular proteins whose catalytic function is due to their three dimensional structure. For this reason, stability strategies make use of compounds that avoid dismantling or distorting protein 3D structures. This study is concerned with the use of microencapsulation techniques to optimize enzyme stabilization. Laccases were embedded in phophatidylcholine liposomes and their encapsulation capacity was assessed. Their enzymatic activity and stability were analyzed, comparing free-enzymes, enzymes in liposomes, and the lipid fraction separated from the aqueous fraction. An increase in their encapsulation efficiency was found at higher lipid/laccase ratios. Relative activity of enzyme-containing vesicles has also been shown to be retained much more than that of free native enzymes. The loss of activity of laccases entrapped in the vesicles in the total stability process is lower than 10% compared with 40% to 60% of loss of free-laccases after heating the samples for 3 days. Laccase stabilization could be of interest to future textile or cosmetic applications because of their potential for environmentally friendly oxidation technologies.

关键词： MLV Liposome Enzymes Laccases Encapsulation Stability

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New real-time-PCR method to identify single point mutations in hepatitis C virus

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World Journal of Gastroenterology 2016年第43期22卷 9604-9612页

作者： Qian Chen Irene Belmonte Maria Buti Leonardo Nieto Damir Garcia-Cehic Josep Gregori Celia Perales Laura Ordeig meritxell Llorens Maria Eugenia Soria Rafael Esteban Juan Ignacio Esteban Francisco Rodriguez-Frias Josep Quer Liver Unit Internal Medicine Lab. Malalties Hepàtiques Vall d’Hebron Institut Recerca-Hospital Universitari Vall d’ Hebron08035 Barcelona Spain Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas Instituto de Salud Carlos Ⅲ28029 madrid Spain Liver Pathology Unit Departments of Biochemistry and Microbiology Hospital Universitari Vall d’Hebron Autonomous University of Barcelona 08035 Bareelona Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos Ⅲ 28029 Madrid Spain Universitat Autònoma de Barcelona 08193 Bareelona Spain

AIM To develop a fast, low-cost diagnostic strategy to identify single point mutations in highly variable genomes such as hepatitis C virus(HCV).METHODS In patients with HCV infection, resistance-associated amino acid substitutions within the viral quasispecies prior to therapy can confer decreased susceptibility to direct-acting antiviral agents and lead to treatment failure and virological relapse. One such naturally occurring mutation is the Q80 K substitution in the HCV-NS3 protease gene, which confers resistance to PI inhibitors, particularly simeprevir. Low-cost, highly sensitive techniques enabling routine detection of these single point mutations would be useful to identify patients at a risk of treatment failure. Light Cycler methods, based on real-time PCR with sequencespecific probe hybridization, have been implemented in most diagnostic laboratories. However, this technique cannot identify single point mutations in highly variable genetic environments, such as the HCV genome. To circumvent this problem, we developed a new method to homogenize all nucleotides present in a region except the point mutation of interest. RESULTS Using nucleotide-specific probes Q, K, and R substitutions at position 80 were clearly identified at a sensitivity of 10%(mutations present at a frequency of at least 10% were detected). The technique was successfully applied to identify the Q80 K substitution in 240 HCV G1 serum samples, with performance comparable to that of direct Sanger sequencing, the current standard procedure for this purpose. The new method was then validated in a Catalonian population of 202 HCV G1-infected individuals. Q80 K was detected in 14.6% of G1 a patients and 0% of G1 b in our setting. CONCLUSION A fast, low-cost diagnostic strategy based on real-time PCR and fluorescence resonance energy transfer probe melting curve analysis has been successfully developed to identify single point mutations in highly variable genomes such as hepatitis C virus. This

关键词： Hepatitis C virus Resistance-associated amino acid substitutions Low-cost test Single-point mutations Q80K

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Current trends in access to treatment for hepatitis B in immigrants vs non-immigrants

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Gastroenterology Report 2020年第5期8卷 362-366,I0002页

作者： Mireia Miquel Albert Pardo Montse Forné Gemma Martínez-Alpin AdriàRodríguez-Castellano meritxell Casas MercèRosinach MercèRoget Blai Dalmau Rocío Temiño Joan Carlos Quer Jordi Sanchez-Delgado Jordi Ortiz Mercedes Vergara Liver Unit Gastroenterology DepartmentParc TaulíUniversity HospitalInstitut d’Investigacio i InnovacióParc TaulíI3PTAutonomous University of BarcelonaSabadellSpain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas(CIBERehd) Instituto de Salud Carlos IIIMadridSpain Gastroenterology Department University Hospital Joan XXIIITarragonaSpain Liver Unit Gastroenterology DepartmentUniversity Hospital Mútua TerrassaBarcelonaSpain Liver Unit Gastroenterology DepartmentConsorci Sanitari de TerrassaTerrassaSpainó

Background:Universal vaccination for hepatitis B virus(HBV)and migratory movements have changed the demographic characteristics of this disease in Spain and in ***,we evaluated the characteristics of the disease and the possible differences according to origin(immigrants vs non-immigrants)and access to ***:This is a multicenter cross-sectional study(June 2014 to May 2015)in which outpatients with a positive HBsAg were seen and followed in four Hepatology *** and clinical data and indication and access to treatment were collected in two different regions of Catalonia(Spain)where there are no barriers to treatment due to a comprehensive coverage under the National Health ***:A total of 951 patients were evaluated(48.1%men).Of these,46.6%were immigrants(58.7%of them were born in Africa)and were significantly younger compared to *** proportions of patients with alcohol consumption,being overweight,and other indicators of metabolic co-morbidities were significantly higher in *** the 937 patients receiving HBeAg examination,91.7%were *** HBeAg-positive infection was significantly higher in immigrants(3.9%vs 0.6%,P=0.001)and chronic HBeAg-negative hepatitis was higher non-immigrants(31.7%vs 21.4%,P<0.001).Not only was the proportion of patients who met treatment criteria significantly higher among nonimmigrants(38.4%vs 29.2%,P=0.003),but also the proportion of those with indication of effectively receiving therapy at the time of data collection(83.2%vs 57.8%,P<0.001).Conclusions:The immigrant population with HBV is younger and has a lower prevalence of metabolic co-morbidities and a higher frequency of chronic HBeAg *** having access to care and an indication for treatment,some do not get adequately treated due to several factors including local adaptation that precludes access to treatment.

关键词： hepatitis B prevalence immigration access to treatment

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Effect of fibrinolytic therapy on ST-elevation myocardial infarction clinical outcomes during the COVID-19 pandemic:A systematic review and meta-analysis

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World Journal of Cardiology 2023年第6期15卷 309-323页

作者： Anwar Khedr Hussam Al Hennawi Muhammed Khuzzaim Khan Mostafa Elbanna Abbas B Jama Ekaterina Proskuriakova Hisham Mushtaq Mikael Mir Sydney Boike Ibtisam Rauf Aalaa Eissa meritxell Urtecho Thoyaja Koritala Nitesh Jain Lokesh Goyal Salim Surani Syed A Khan Department of Internal Medicine BronxCare Health SystemBronxNY 10457United States Department of Internal Medicine Jefferson Abington HospitalAbingtonPA 19001United States Department of Internal Medicine Dow University of Health ScienceKarachi 74200Pakistan Department of Internal Medicine Rochester Regional HealthRochesterNY 14621United States Department of Critical Care Mayo Clinic Health SystemMankatoMN 56001United States Department of Internal Medicine Mount Sinai HospitalChicagoIL 60608United States Department of Internal Medicine St.Vincent's Medical CenterBridgeportCT 06606United States Department of Medicine University of MinnesotaMinneapolisMN 55455United States Department of Medicine St.George's UniversitySchool of MedicineSt George SW170REGrenada Department of Medicine KFS UniversityKFS 33511Egypt Department of Medicine Robert D and Patricia E.Kern Center of Health Care DeliveryMayo ClinicRochesterMN 55905United States Department of Hospital Medicine Mayo Clinic Health SystemMankatoMN 56001United States Department of Medicine Mayo Clinic Health SystemMankatoMN 56001United States Department of Hospital Medicine Christus Sphon Hospital-shorelineCorpus ChristoTX 78404United States Department of Pulmonary Critical Care&Sleep MedicineTexas A&M UniversityCollege StationTX 77843United States Department of Critical Care Medicine Mayo Clinic Health SystemMankatoMN 56001United States

BACKGROUND ST-elevation myocardial infarction(STEMI)is the result of transmural ischemia of the myocardium and is associated with a high mortality *** percutaneous coronary intervention(PPCI)is the recommended first-line treatment strategy for patients with *** timely delivery of PPCI became extremely challenging for STEMI patients during the coronavirus disease 2019(COVID-19)pandemic,leading to a projected steep rise in *** delays were overcome by the shift from first-line therapy and the development of modern fibrinolytic-based *** is unclear whether fibrinolytic-based reperfusion therapy is effective in improving STEMI *** To determine the incidence of fibrinolytic therapy during the COVID-19 pandemic and its effects on STEMI clinical *** PubMed,Google Scholar,Scopus,Web of Science,and Cochrane Central Register of Controlled Trials were queried from January 2020 up to February 2022 to identify studies investigating the effect of fibrinolytic therapy on the prognostic outcome of STEMI patients during the *** outcomes were the incidence of fibrinolysis and the risk of all-cause *** were meta-analyzed using the random effects model to derive odds ratios(OR)and 95%confidence *** assessment was carried out using the Newcastle-Ottawa *** Fourteen studies including 50136 STEMI patients(n=15142 in the pandemic arm;n=34994 in the pre-pandemic arm)were *** mean age was 61 years;79%were male,27%had type 2 diabetes,and 47%were *** with the pre-pandemic period,there was a significantly increased overall incidence of fibrinolysis during the pandemic period[OR:1.80(1.18 to 2.75);I2=78%;P=0.00;GRADE:Very low].The incidence of fibrinolysis was not associated with the risk of all-cause mortality in any *** countries with a low-and middle-income status reported a higher incidence of fibrinolysis[OR:5.16(2.18 to 12.22);I2=81%;P=0.00;GRADE:Very lo

关键词： ST-elevation myocardial infarction Myocardial infarction Thrombolytic therapy Fibrinolysis COVID-19 Pandemics

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欧洲控制PMWS的多种管理策略

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四川畜牧兽医 2006年第6期33卷 24-27页

作者： meritxell Donaden Jake Waddilove Enric Marco 蒋增艳 PIC 东门兽医集团 B&M兽医顾问公司 PIC中国公司上海徐汇200233

自从断奶仔猪多系统衰竭综合征(PMWS)在欧洲发现后,人们应用不同的策略试图对该病进行防制,虽然取得了不同程度的成功,但还没有任何一种单一的方法能够完全控制这种疾病.

关键词：完全控制 PMWS 断奶仔猪多系统衰竭综合征欧洲管理

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