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Friction 2024年第8期12卷 1785-1800页

作者： Javier BLANCO-rod.Íguez Jacobo PORTEIRO JoséA.LÓPEZ-CAMPOS MartíCORTADA-GARCÍA Silvia FERNÁNdeZ-CASTEJÓN CINTECX Universidade de VigoLagoas-Marcosende s/nVigo 36310Spain Repsol SA MadridSpain

Durability and reliability have been studied for decades through intensive trial-error ***,there are numerous fields of application where the costs associated with this approach are not *** lubricated machines with severe dynamic loads,such as high-power-density engines,simulation tools offer clear advantages over intensive *** and multiple scenarios can be cost-effectively simulated to assess different lubricants and engine *** work presented here details the study of wear based on a validated elastohydrod.namic(EHD)simulation model of the connecting rod.journal *** model accounts for elastic deformation through a connecting rod.finite element model(FEM).In addition,multiple lubricant rheological and tribological dependences,determined by specific experimental tests,are applied in the model through their interaction with the simulation ***,a novel wear algorithm is proposed to predict wear depth over time evolution along a proposed wear cycle based on the typical working ranges of high-performance engines.A final assessment is presented to compare 4 different ultralow-viscosity lubricants in their protective performance under severe *** results show the evolution of the wear load and wear depth over the wear *** evaluation is key to describing a lubricant selection procedure for high-power-density engines.

关键词： wear modelling finite element modelling mixed lubrication elastohydrod.namic(EHD) internal combustion engines bearings

Endoscopic anti-reflux therapy for gastroesophageal reflux disease

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World Journal of Gastroenterology 2021年第39期27卷 6601-6614页

作者： enrique rod.íguez de santiago Eduardo Albéniz Fermin Estremera-Arevalo Carlos Teruel Sanchez-Vegazo Vicente Lorenzo-Zúñiga department of Gastroenterology and Hepatology Hospital Universitario Ramón y CajalInstituto Ramón y Cajal de Investigación Sanitaria(IRYCIS)Madrid 28034Spain Endoscopy Unit Gastroenterology DepartmentHospital Universitario de Navarra.Gastrointestinal Endoscopy Research UnitNavarrabiomed Biomedical Research Center.PamplonaSpain Endoscopy Unit Gastroenterology DepartmentHospital Universitari i Politècnic La FeInstituto de Investigación Sanitaria La Fe(IIS La Fe)Valencia 46026Spain

Gastroesophageal reflux disease has an increasing incidence and prevalence worldwide.A significant proportion of patients have a suboptimal response to proton pump inhibitors or are unwilling to take lifelong medication due to concerns about long-term adverse *** anti-reflux therapies offer a minimally invasive option for patients unwilling to undergo surgical treatment or take lifelong *** best candidates are those with a good response to proton pump inhibitors and without a significant sliding hiatal *** incisionless fundoplication and nonablative radiofrequency are the techniques with the largest body of evidence and that have been tested in several randomized clinical ***-assisted ligation techniques,anti-reflux mucosectomy,antireflux mucosal ablation,and new plication devices have yielded promising results in recent noncontrolled ***,the role of endoscopic procedures remains controversial due to limited long-term and comparative data,and no consensus exists in current clinical *** review provides an updated summary focused on the patient selection,technical details,clinical success,and safety of current and future endoscopic anti-reflux techniques.

关键词： Treatment Gastroesophageal reflux Transoral incisionless fundoplication Anti-reflux mucosectomy Anti-reflux mucosal ablation Stretta

Clinical characteristics of young patients with early Barrett’s neoplasia

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World Journal of Gastroenterology 2019年第24期25卷 3069-3078页

作者： Yugo Iwaya Yuto Shimamura Kenichi Goda enrique rod.íguez de santiago John Gerard Coneys Jeffrey D Mosko Gabor Kandel Paul Kortan Gary May Norman Marcon Christopher Teshima Advanced Therapeutic Endoscopy Centre St Michael’s HospitalUniversity of TorontoToronto M5B 1W8OntarioCanada department of Gastroenterology Dokkyo Medical UniversityTochigi 321-0293Japan department of Gastroenterology Ramón y Cajal university hospitalMadrid 28034Spain

BACKGROUND Esophageal adenocarcinoma(EAC)and high-grade dysplasia(HGD)may appear in young patients with Barrett's esophagus(BE).However,characteristics of Barrett's-related neoplasia in this younger population remain *** To identify clinical characteristics that differ between young and old patients with early-stage Barrett's-related *** We conducted a retrospective analysis of a prospectively maintained database comprised of consecutive patients with early-stage EAC(pT1)and HGD at a tertiary-referral center between 2001 and *** characteristics,drug and risk factor exposures,clinicopathological staging of EAC/HGD and treatment outcomes[complete eradication of neoplasia(CE-N),complete eradication of intestinal metaplasia(CE-IM),recurrence of neoplasia and recurrence of intestinal metaplasia]were *** analyses were performed to identify factors that differed significantly between older and younger(≤50 years)*** We identified 450 patients with T1 EAC and HGD(74%and 26%,respectively);45(10%)were≤50 *** to the older group,young patients were more likely to present with ongoing gastroesophageal reflux disease(GERD)symptoms(55%vs 38%,P=0.04)and to be obese(body mass index>30,48%vs 32%,P=0.04).Multivariate logistic regression analysis showed that young patients were significantly more likely to have ongoing GERD symptoms[odds ratio(OR)2.00,95%confidence interval(CI)1.04-3.85,P=0.04]and to be obese(OR 2.06,95%CI 1.07-3.98,P=0.03)whereas the young group was less likely to have a smoking history(OR 0.39,95%CI 0.20-0.75,Pdelines recommend BE screening in patients>50 years of age,younger patients should be considered for screening endoscopy if they suffer from obesity and GERD symptoms.

关键词： Barrett's Esophagus Gastroesophageal reflux disease Obesity Esophageal adenocarcinoma High-grade dysplasia Guideline Young patient

Influence of postoperative complications on long-term survival in liver transplant patients

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World Journal of Gastrointestinal Surgery 2020年第8期12卷 336-345页

作者： Sonia Castanedo enrique Toledo Roberto Fernández-santiago Federico Castillo Juan Echeverri Juan Carlos rod.íguez-Sanjuán department of General Surgery University Hospital Marqués de ValdecillaUniversity of CantabriaSantander 39008Spain

BACKGROUND Liver transplant(LT)is a complex procedure with frequent postoperative *** other surgical procedures such as gastrectomy,esophagectomy or resection of liver metastases,these complications are associated with poorer long-term *** is possible this happens in LT but there are not enough data to establish this *** To analyze the possible influence of postoperative complications on long-term survival and the ability of the comprehensive complication index(CCI)to predict *** Retrospective study in a tertiary-level university *** 164 participants were all patients who received a LT from January 2012 to July *** follow-up was done in the hospital until the end of the study or *** and risk after transplantation were calculated using the Charlson and balance of risk(BAR)scores,*** complications were graded according to the Clavien-Dindo classification and the *** assess the CCI cut-off value with greater prognostic accuracy a receiver operating characteristic(ROC)curve was built,with calculation of the area under the curve(AUC).Overall survival was estimated according to the Kaplan-Meier test and log-rank *** were compared by the Mann-Whitney *** the multivariable analysis the Cox regression was *** The mean follow-up time of the cohort was 37.76(SD=24.5)mo.A ROC curve of CCI with 5-year survival was *** AUC was 0.826(0.730-0.922),Pden index with a result of *** sensitivity was 84.6%and the specificity 61.3%.Survival curves for comparison of patients with CCI score33.5(33.5=median CCI value)showed estimate

关键词： Liver transplant Complication Survival Comprehensive complication index Clavien Prognosis

Tenofovir vs lamivudine plus adefovir in chronic hepatitis B:TENOSIMP-B study

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World Journal of Gastroenterology 2017年第41期23卷 7459-7469页

作者： Manuel rod.íguez Juan Manuel Pascasio enrique Fraga Javier Fuentes Martín Prieto Gloria Sánchez-Antolín Jose Luis Calleja Esther Molina María Luisa García-Buey María Angeles Blanco Javier Salmerón María Lucía Bonet Jose Antonio Pons Jose Manuel González Miguel Angel Casado Francisco Jorquera 无 Division of Gastroenterology and Hepatology.Hospital Universitario Central de Asturias Unit for the Clinical Management of Digestive Diseases IBISHospital Universitario Virgen del Rocío Liver Transplantation and Hepatology Unit Gastroenterology ServiceHospital Universitario Reina Sofía Digestive Medicine Service Hospital Universitario Miguel Servet Hepatology Unit Digestive Medicine ServiceHospital Universitari i Politècnic La Fe Hepatology Unit Hospital Universitario Rio Hortega Liver Unit Hospital Universitario Puerta de Hierro de MajadahondaUniversidad Autónoma de Madrid Digestive Medicine Service Hospital Clínico de Santiago de Compostela Liver Unit Hospital Universitario de La Princesa Digestive Medicine Service Hospital General Universitario Gregorio Maranon Digestive Medicine Unit Complejo Hospitalario de Granada Digestive Medicine Service Hospital Universitario Son Espases Hepatology Unit IMIB Hospital Universitario Virgen de la Arrixaca Digestive Medicine Service Hospital Clínico Universitario de Valladolid Pharmacoeconomics and Outcomes Research Iberia Division of Gastroenterology and Hepatology Complejo Asistencial Universitario de León the TENOSIMP-B Research Group

AIM To demonstrate the non-inferiority(15% non-inferiority limit) of monotherapy with tenofovir disoproxil fumarate(TDF) vs the combination of lamivudine(LAM) plus adefovir dipivoxil(ADV) in the maintenance of virologic response in patients with chronic hepatitis B(CHB) and prior failure with *** This study was a Phase IV prospective, randomized, open, controlled study with 2 parallel groups(TDF and LAM+ADV) of adult patients with hepatitis B e antigen(HBe Ag)-negative CHB, prior failure with LAM, on treatment with LAM+ADV for at least 6 mo, without prior resistance to ADV and with an undetectable viral load at the start of the study, in 14 Spanish hospitals. The follow-up time for each patient was 48 wk after randomization, with quarterly visits in which the viral load, biochemical and serological parameters, adverse effects, adherence to treatment and consumption of hospital resources were *** Forty-six patients were evaluated [median age: 55.4 years(30.2-75.2); 84.8% male], including 22 patients with TDF and 24 with LAM+ADV. During study development, hepatitis B virus DNA(HBV-DNA) remained undetectable, all patients remained HBe Ag negative, and hepatitis B surface antigen(HBs Ag) positive. Alanine aminotransferase(ALT) values at the end of the study were similar in the 2 groups(25.1± 7.65, TDF vs 24.22 ± 8.38, LAM+ADV, P = 0.646). No significant changes were observed in creatinine or serum phosphorus values in either group. No significant differences between the 2 groups were noted in the identification of adverse effects(AEs)(53.8%, TDF vs 37.5%, LAM+ADV, P = 0.170), and none of the AEs which occurred were serious. Treatment adherence was 95.5% and 83.3% in the TDF and the LAM+ADV groups, respectively(P = 0.488). The costs associated with hospital resource consumption were significantly lower with the TDF treatment than the LAM+ADV treatment(€4943 ± 1059 vs €5811 ± 1538, respectively, P < 0.001).CONCLUSION TDF monotherapy proved to be safe

关键词： Tenofovir Lamivudine+Adefovir Efficacy Safety Adherence Costs Hepatitis B

dendritic cell deficiencies persist seven months after SARS-CoV-2 infection

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Cellular & Molecular Immunology 2021年第9期18卷 2128-2139页

作者： Alberto Pérez-Gómez Joana Vitallé Carmen Gasca-Capote Alicia Gutierrez-Valencia María Trujillo-rod.iguez Ana Serna-Gallego Esperanza Muñoz-Muela María de los Reyes Jiménez-Leon Mohamed Rafii-El-Idrissi Benhnia Inmaculada Rivas-Jeremias Cesar Sotomayor Cristina Roca-Oporto Nuria Espinosa Carmen Infante-Domínguez Juan Carlos Crespo-Rivas Alberto Fernández-Villar Alexandre Pérez-González Luis Fernando López-Cortés Eva Poveda Ezequiel Ruiz-Mateos JoséMiguel Cisneros Sonsoles Salto-Alejandre Judith Berastegui-Cabrera Pedro Camacho-Martínez Carmen Infante-Domínguez Marta Carretero-Ledesma Juan Carlos Crespo-Rivas Eduardo Márquez JoséManuel Lomas Claudio Bueno Rosario Amaya JoséAntonio Lepe Jerónimo Pachón Elisa Cordero Javier Sánchez-Céspedes Manuela Aguilar-Guisado Almudena Aguilera Clara Aguilera Teresa Aldabo-Pallas Verónica Alfaro-Lara Cristina Amodeo Javier Ampuero María Dolores Avilés Maribel Asensio Bosco Barón-Franco Lydia Barrera-Pulido Rafael Bellido-Alba Máximo Bernabeu-Wittel Candela Caballero-Eraso Macarena Cabrera enrique Calderón Jesús Carbajal-Guerrero Manuela Cid-Cumplido Yael Corcia-Palomo Juan delgado Antonio Domínguez-Petit Alejandro deniz Reginal Dusseck-Brutus Ana Escoresca-Ortega Fátima Espinosa Nuria Espinosa Michelle Espinoza Carmen Ferrándiz-Millón Marta Ferrer Teresa Ferrer Ignacio Gallego-Texeira Rosa Gámez-Mancera Emilio García Horacio García-delgado Manuel García-Gutiérrez María Luisa Gascón-Castillo Aurora González-Estrada demetrio González Carmen Gómez-González Rocío González-León Carmen Grande-Cabrerizo Sonia Gutiérrez Carlos Hernández-Quiles Inmaculada Concepción Herrera-Melero Marta Herrero-Romero Luis Jara Carlos Jiménez-Juan Silvia Jiménez-Jorge Mercedes Jiménez-Sánchez Julia Lanseros-Tenllado Carmina López Isabel López Álvaro López-Barrios Luis F.López-Cortés Rafael Luque-Márquez Daniel Macías-García Guillermo Martín-Gutiérrez Luis Martín-Villén JoséMolina Aurora Morillo María Dolores Navarro-Amuedo Dolores Nieto-Martín Francisco Ortega María Paniagua-García Amelia Peña-rod.íguez E Clinical Unit of Infectious Diseases Microbiology and Preventive MedicineInstitute of Biomedicine of Seville(IBiS)Virgen del Rocío University HospitalCSICUniversity of SevilleSevilleSpain department of Medical Biochemistry Molecular Biologyand ImmunologySchool of MedicineUniversity of SevilleSevilleSpain Pneumology Service Galicia Sur Health Research Instituto(IIS Galicia Sur)SERGAS-UVigoVigoSpain Infectious Diseases Unit Department of Internal MedicineComplexo HospitalarioUniversitario de VigoIIS Galicia SurSERGAS-UVigoVigoSpain Group of Virology and Pathogenesis Galicia Sur Health Research Institute(IIS Galicia Sur)-Complexo Hospitalario Universitario de VigoSERGAS-UVigoVigoSpain Unit of Infectious Diseases Microbiologyand Preventive MedicineVirgen del Rocío University HospitalSevilleSpain Institute of Biomedicine of Seville(IBiS) Virgen del Rocío University Hospital/CSIC/University of SevilleSevilleSpain Medico-Surgical Unit of Respiratory Diseases Virgen del Rocío University HospitalSevilleSpain Unit of Emergencies Virgen del Rocío University HospitalSevilleSpain Intensive Care Unit Virgen del Rocío University HospitalSevilleSpain department of Medicine University of SevilleSevilleSpain Cardiology and Cardiovascular Surgery Unit Virgen del Rocío University HospitalSevilleSpain Rheumatology Unit Virgen del Rocío University HospitalSevilleSpain Internal Medicine Unit Virgen del Rocío University HospitalSevilleSpain Digestive and Hepatobiliary Unit Virgen del Rocío University HospitalSevilleSpain Neurology and Clinical Neurophysiology Unit Virgen del Rocío University HospitalSevilleSpain Endocrinology and Nutrition Unit Virgen del Rocío University HospitalSevilleSpain Urology and Nephrology Unit Virgen del Rocío University HospitalSevilleSpain Unit of Clinical Investigation and Clinical Trials Virgen del Rocío University HospitalSevilleSpain

Severe Acute Respiratory Syndrome Coronavirus(SARS-CoV)-2 infection induces an exacerbated inflammation driven by innate immunity *** cells(DCs)play a key role in the defense against viral infections,for instance plasmacytoid DCs(pDCs),have the capacity to prod.ce vast amounts of interferon-alpha(IFN-α).In COVID-19 there is a deficit in DC numbers and IFN-αprod.ction,which has been associated with disease *** this work,we described that in addition to the DC deficiency,several DC activation and homing markers were altered in acute COVID-19 patients,which were associated with multiple inflammatory ***,previously hospitalized and nonhospitalized patients remained with decreased numbers of CD1c+myeloid DCs and pDCs seven months after SARS-CoV-2 ***,the expression of DC markers such as CD86 and CD4 were only restored in previously nonhospitalized patients,while no restoration of integrinβ7 and indoleamine 2,3-dyoxigenase(IDO)levels were *** findings contribute to a better understanding of the immunological sequelae of COVID-19.

关键词： SARS-CoV-2 COVID-19 dendritic cell Long-COVID