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Feeding ecology and interactions with mammal hosts in a symbiotic genus of birds(Buphagus spp.)in Namibia

Avian Research 2024年第3期15卷 336-344页

作者： Michael S.Lukubwe Daniel Velarde-Garcéz Fernando Sequeira susana lopes Adrian J.F.K.Craig Vanessa A.Mata Department of Zoology and Entomology Rhodes UniversityMakhandaSouth Africa Department of Wildlife Management and Tourism Studies University of NamibiaKatima Mulilo CampusNamibia Departamento de Biologia Faculdade de CiênciasUniversidade do PortoPortoPortugal CIBIO Centro de Investigação em Biodiversidade e Recursos GenéticosInBIO Laboratório AssociadoCampus de VairãoVairãoPortugal BIOPOLIS Program in Genomics Biodiversity and Land PlanningCIBIOCampus de VairãoVairãoPortugal

As the sole obligate symbiotic birds in Africa,oxpeckers offer a unique model for studying symbiotic *** to the multitrophic level they occupy and the context dependent foraging behavior they exhibit,the type of symbiotic relationship can be *** addition to providing a cleaning service to the host by removing ticks,oxpeckers frequently feed on blood,mucus,and saliva,inflicting potential damage on the ***,we used DNA metabarcoding on faecal samples to analyze the taxonomic composition of the trophic interactions of the Yellow-billed Oxpecker(Buphagus africanus)and Red-billed Oxpecker(***)in northeastern *** contrast to conventional methods,DNA metabarcoding allows for a detailed identification of dietary resources encompassing both mammal hosts and consumed arthropods within the same *** this information,we examined differences in the diet composition between oxpecker species and localities,as well as the co-occurrence between host and arthropod *** findings revealed that oxpeckers predominantly source their diet from mammals,ticks,and flies;however,ticks and flies rarely co-occur in the diet of an *** observed variability among individuals in their feeding ecology,which is strongly correlated with locality and,to a lesser extent,with the mammal *** noted a high degree of mobility between hosts within relatively short periods,with 32%of the samples showing traces of at least two mammal *** study illustrates the dynamic foraging behavior of these specialized symbiotic birds,shedding light on their potential role in pest control services and disease transmission.

关键词： Commensalism Diet DNA metabarcoding Oxpeckers Parasitism Trophic ecology

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Fecal marker levels as predictors of need for endoscopic balloon dilation in Crohn's disease patients with anastomotic strictures

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World Journal of Gastroenterology 2017年第35期23卷 6482-6490页

作者： susana lopes Patrícia Andrade Eduardo Rodrigues-Pinto Joana Afonso Guilherme Macedo Fernando Magro Gastroenterology Department Faculty of MedicineHospital de Sao Joao Department of Pharmacology and Therapeutics University of Porto

AIM To evaluate the accuracy and best cut-off value of fecal calprotectin(FC) and fecal lactoferrin(FL) to predict disease recurrence in asymptomatic patients presenting with anastomotic strictures. METHODS This was a longitudinal single tertiary center study based on prospectively collected data(recorded in a clinical database created for this purpose) performed between March 2010 and November 2014. Crohn's disease(CD) patients with anastomotic stricture who submitted to postoperative endoscopic evaluation were included. Stools were collected on the day before bowel cleaning for FC and FL. Endoscopic balloon dilation(EBD) was performed if the patient presented an anastomotic stricture not traversed by the colonoscope, regardless of patients' symptoms. Successful dilation was defined as passage of the colonoscope through the dilated stricture into the neotermimal *** recurrence was defined as a modified Rutgeerts score of ≥ i2 b. RESULTS In a total of 178 patients who underwent colonoscopy, 58 presented an anastomotic stricture, 86% were asymptomatic, and 48(54% male; median age of 46.5 years) were successfully dilated. Immediate success rate was 92% and no complications were recorded. FC and FL levels correlated significantly with endoscopic recurrence(P < 0.001) with an optimal cut-off value of 90.85 μg/g(sensitivity of 95.5%, specificity of 69.2%, positive predictive value(PPV) of 72.4%, negative predictive value(NPV) of 94.7% and accuracy of 81%] for FC and of 5.6 μg/g(sensitivity of 77.3%, specificity of 69.2%, PPV of 68%, NPV of 78.4% and accuracy of 72.9%) for *** Fecal markers are good predictors of CD endoscopic recurrence in patients with asymptomatic anastomotic stricture. FC and FL may guide the need for EBD in this context.

关键词： Crohn's disease Anastomotic strictures Endoscopic balloon dilation Fecal markers Po stoperative recurrence

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Autoimmune hepatitis and eosinophilia:A rare case report

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World Journal of Hepatology 2023年第2期15卷 311-317页

作者： Isabel Garrido susana lopes Elsa Fonseca Fátima Carneiro Guilherme Macedo Department of Gastroenterology and Hepatology Centro Hospitalar Universitário de São JoãoWorld Gastroenterology Organization Porto Training CenterFaculty of Medicine of the University of PortoPortoPortugal Department of Pathology Centro Hospitalar Universitário de São JoãoInstituto de Investigação e Inovação em Saúde(i3S)and Institute of Molecular Pathology and ImmunologyUniversity of Porto(Ipatimup)Faculty of Medicine of the University of PortoPortoPortugal

BACKGROUND Autoimmune hepatitis consists of a chronic liver disease whose etiology is *** is comprised of relevant immunological aspects and of immunemediated liver *** may be a considerable feature,particularly happening in male *** SUMMARY We report here a Crohn´s disease patient presenting with de novo hypergammaglobulinemia,circulating autoantibodies and elevated transaminase *** also had significant peripheral eosinophilia and elevated immunoglobulin E levels at *** pathology findings from liver biopsy were compatible with autoimmune hepatitis with eosinophilic *** This is the first report of autoimmune hepatitis with exuberant eosinophilic infiltration in the liver and bone marrow,described in a patient with Crohn’s disease.

关键词： Autoimmune hepatitis Eosinophilia Bone marrow Crohn’s disease Case report

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Endoscopic balloon dilation of crohn's disease stricturessafety,efficacy and clinical impact

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World Journal of Gastroenterology 2017年第41期23卷 7397-7406页

作者： susana lopes Eduardo Rodrigues-Pinto Patrícia Andrade Joana Afonso Todd H Baron Fernando Magro Guilherme Macedo Gastroenterology Department Faculty of MedicineHospital de Sao Joao Department of Pharmacology and Therapeutics University of Porto Division of Gastroenterology and Hepatology University of North Carolina

AIM To evaluate the incidence of anastomotic strictures after intestinal resection in Crohn's disease(CD), demonstrate long-term efficacy and safety of endoscopic balloon dilation(EBD) in CD strictures and its impact on the diagnosis of subclinical postoperative endoscopic recurrence. METHODS Retrospective single tertiary center study based on prospectively collected data between 2010 and 2015including anastomotic and non-anastomotic strictures. RESULTS29% of 162 CD patients included developed an anastomotic stricture. 43 patients with anastomotic strictures and 37 with non-anastomotic strictures underwent EBD; technical success was 97.7% and 100%, respectively, however, 63% and 41% needed repeat dilation during the 4.4-year follow-up. Longer periods between surgery and index colonoscopy and higher lactoferrin levels were associated with the presence of stricture after surgery. Calprotectin levels > 83.35 μg/g and current or past history of smoking were associated with a shorter time until need for dilation(HR = 3.877, 95%CI: 1.480-10.152 and HR = 3.041, 95%CI: 1.213-7.627). Anastomotic strictures had a greater need for repeat dilation(63% vs 41%, P = 0.047). No differences were found between asymptomatic and symptomatic cohorts. Disease recurrence diagnosis was only possible after EBD in a third of patients. CONCLUSION EBD is an effective and safe alternative to surgery, with a good short and long-term outcome, postponing or even avoiding further surgery. EBD may allow to diagnose disease recurrence in patients with no clinical signs/biomarkers of disease activity.

关键词： Crohn’s disease Endoscopic recurrence Anastomotic strictures Non-anastomotic strictures Endoscopic balloon dilation

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Exosomal glypican-1 is elevated in pancreatic cancer precursors and can signal genetic predisposition in the absence of endoscopic ultrasound abnormalities

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World Journal of Gastroenterology 2022年第31期28卷 4310-4327页

作者： Pedro Moutinho-Ribeiro Ines A Batista Sofia T Quintas Bárbara Adem Marco Silva Rui Morais Armando Peixoto Rosa Coelho Pedro Costa-Moreira Renato Medas susana lopes Filipe Vilas-Boas Manuela Baptista Diogo Dias-Silva Ana L Esteves Filipa Martins Joanne lopes Helena Barroca Fátima Carneiro Guilherme Macedo Sonia A Melo Serviço de Gastrenterologia Centro Hospitalar Universitário de Sao JoaoPorto 4200Portugal Faculty of Medicine University of PortoPorto 4200Portugal Instituto de Investigacao e Inovacao em Saúde(i3S) Universidade do PortoPorto 4200Portugal IPATIMUP-Institute of Molecular Pathology and Immunology University of PortoPorto 4200Portugal Instituto de Ciencias Biomédicas Abel Salazar(ICBAS) University of PortoPorto 4050Portugal Servico de Cirurgia Geral Centro Hospitalar Universitário de Sao JoaoPorto 4200Portugal Unidade de Saúde Familiar Serpa Pinto ACeS Porto OcidentalPorto 4250Portugal Serviço de Anatomia Patológica Centro Hospitalar Universitário de Sao JoaoPorto 4200Portugal

BACKGROUND Individuals within specific risk groups for pancreatic ductal adenocarcinoma(PDAC)[mucinous cystic lesions(MCLs),hereditary risk(HR),and new-late onset diabetes mellitus(NLOD)]represent an opportunity for early cancer *** ultrasound(EUS)is a premium image modality for PDAC screening and precursor lesion *** no specific biomarker is currently clinically available for this purpose,glypican-1(GPC1)is overexpressed in the circulating exosomes(crExos)of patients with PDAC compared with healthy subjects or those harboring benign pancreatic *** To evaluate the capacity of GPC1+crExos to identify individuals at higher risk within these specific groups,all characterized by *** This cross-sectional study with a prospective unicentric cohort included 88 subjects:40 patients with MCL,20 individuals with HR,and 20 patients with NLOD.A control group(CG)was submitted to EUS for other reasons than pancreatic pathology,with normal pancreas and absence of hereditary risk factors(n=8).The inclusion period was between October 2016 and January 2019,and the study was approved by the Ethics Committee of Centro Hospitalar Universitário de São João,Porto,*** patients provided written informed *** and blood tests for quantification of GPC1+crExos by flow cytometry and carbohydrate antigen 19-9(CA 19-9)levels by ELISA were performed in all ***-guided tissue acquisition was done whenever *** statistical analysis,SPSS®27.0(IBM Corp.,Armonk,NY,United States)version was *** graphs were created using GraphPad Prism 7.00(GraphPad Software,San Diego,CA,United States).RESULTS Half of MCLs harbored worrisome features(WF)or high-risk stigmata(HRS).Pancreatic abnormalities were detected by EUS in 10.0%and 35.0%in HR and NLOD individuals,respectively,all considered non-malignant and“harmless.”Median levels of GPC1+crExos were statistically different:MCL[99.4%,interquartile range(IQR):94.9%-99.8%],HR(8

关键词： Glypican-1 Circulating exosomes Endoscopic ultrasound Pancreatic cancer risk groups Pancreatic cancer precursor lesions Genetic predisposition

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Autoimmune hepatitis and anti-tumor necrosis factor alpha therapy:A single center report of 8 cases

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World Journal of Gastroenterology 2015年第24期21卷 7584-7588页

作者： susana Rodrigues susana lopes Fernando Magro Hélder Cardoso Ana Maria Horta e Vale Margarida Marques Eva Mariz Miguel Bernardes Joanne lopes Fátima Carneiro Guilherme Macedo Department of Gastroenterology Centro Hospitalar de Sao Joao Department of Rheumatology Centro Hospitalar de Sao Joao Department of Pathology Centro Hospitalar de Sao Joao Institute of Molecular Pathology and Immunology at the University of Porto

This article describes cases of anti-tumor necrosis factor(TNF)-α-induced autoimmune hepatitis and evaluates the outcome of these patients in relation to their immunosuppressive strategy. A retrospective analysis of medical records was performed in our center, in order to detect cases of autoimmune hepatitis(AIH) associated with anti-TNF biologic agents. We describe and analyze eight cases of AIH following anti-TNF therapy, 7 with infliximab and 1 with adalimumab. A distinction should be made between induction of autoimmunity and clinically evident autoimmune disease. Liver biopsy is useful in detecting the role of the TNF-α antagonist in the development of AIH. The lack of relapse after discontinuing immunosuppressive therapy favors, as in this case series, an immune-mediated drug reaction as most patients with AIH have a relapse after treatment is suspended. Although AIH related to anti-TNF therapy is rare, a baseline immunological panel along with liver function tests should be performed in all patients with autoimmune disease before starting biologics.

关键词： Anti-tumor necrosis factor antagonist Autoimmune hepatitis Adalimumab Drug-induced liverinjury Inflammatory bowel disease Infliximab

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Capsule enteroscopy is useful for the therapeutic management of Crohn's disease

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World Journal of Gastroenterology 2015年第44期21卷 12660-12666页

作者： Joao Santos-Antunes Hélder Cardoso susana lopes Margarida Marques Amadeu CR Nunes Guilherme Macedo Gastroenterology Department Faculty of Medicine Hospital de Sao Joao Department of Biochemistry (U38-FCT) Faculty of Medicine University of Porto

AIM: To analyze therapeutic changes in Crohn's disease(CD) patients following video capsule endoscopy(VCE) and to assess the usefulness of Lewis score and the Patency ***: Patency Capsule was performed in every patient that had indication for VCE, and those with negative patency did not undergo VCE. Patients with established CD that underwent VCE between January 2011 and February 2014 were selected for this study; those with suspected CD were excluded, independent of VCE results, since our purpose was to address differences in therapeutic regimen in CD patients before and after VCE. Patients with inconclusive VCE were also excluded. Patients had to be free of non-steroidal anti-inflammatories for at least 1 mo. Those patients who met these criteria were allocated into one of three groups: Staging group(asymptomatic CD patients that underwent VCE for staging of CD), Flare group(patients with active CD), or Post-op group(CD patients evaluated for post-operative recurrence). Lewis score was calculated for every VCE procedure. Statisticalanalysis was performed to address the impact of VCE findings on the therapeutic management of CD patients and to evaluate the utility of the Lewis ***: From a total of 542 VCEs, 135 were performed in patients with CD. Patency capsule excluded nearly 25% of the patients who were supposed to undergo VCE. No videocapsule retention during VCE was reported. From these 135 patients, 29 were excluded because CD diagnosis was not established at the time of VCE. Therefore, a total of 106 patients were included in the final analysis. From these, the majority were in the Staging group(n = 73, 69%), and the remaining were in the Flare(n = 23, 22%) or Post-op(n = 10, 9%) group. Median time between diagnosis and VCE was 5.5 years. Overall, VCE determined changes in the treatment of 40% of patients: only 21% remained free of immunosuppressors after VCE compared to 44% before VCE(P < 0.001). The differences in therapy before and a

关键词： Capsule enteroscopy Crohn's disease Treatment modification Patency capsule Lewis score

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Lot to give,got to live-the restless minds of the“Liver on Tour”project

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World Journal of Hepatology 2016年第19期8卷 825-826页

作者： Guilherme Macedo Armando Peixoto susana lopes Centro Hospitalar de Sao Joao-Gastroenterology Department Faculty of Medicine University of Porto WGO Training Center

The Liver on Tour was a special project devoted to increase the public awareness on Liver Health and Liver Diseases that the Portuguese Association for the Study of Liver Diseases launched throughout the country in 2010.

关键词： Liver disease Hepatology Hepatitis Public health

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Effects of exercise-based cardiac rehabilitation on inflammatory biomarkers in patients with cardiovascular disease:a systematic review with meta-analysis

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TMR Non-Drug Therapy 2022年第4期5卷 17-34页

作者： Agustin Manresa-Rocamora susana lopes Ana Fernandez Joana Martins Vicente Climent-Paya Jose Manuel Sarabia Fernando Ribeiro Department of Sport Sciences Sports Research CentreMiguel Hernández University of ElcheElche 03202Spain Institute for Health and Biomedical Research of Alicante(ISABIAL) Alicante 03010Spain Institute of Biomedicine-iBiMED and School of Health Sciences University of AveiroAveiro 3810-193Portugal Cardiology Department Alicante General University Hospital(HGUA)Alicante 03010Spain

Background:Evidence supports the anti-inflammatory effect of exercise-based cardiac rehabilitation(CR)in patients with cardiovascular disease(CVD).Nonetheless,the influence of training variables on the effects of exercise training is ***,this systematic review with meta-analysis aims to i)estimate the effects of exercise-based CR on the circulating levels of inflammatory biomarkers in patients with CVD based on the type of exercise,and ii)analyse the influence of other potential moderator ***:Electronic searches were performed in PubMed,Scopus,and Web of Science databases up to October 2022.A random-effects models of standardised mean difference(SMD)were *** analyses and meta-regressions were used to carry out heterogeneity ***:Aerobic exercise diminished the levels of C-reactive protein compared with the control group in patients with CVD(SMD+=-0.33[95%CI=-0.47,-0.20),as well as the levels of tumor necrosis factor-alfa exclusively in patients with chronic heart failure(SMD+=-0.38[95%CI=-0.59,-0.17]).Moreover,heterogeneity analyses showed that the effect of aerobic exercise on vascular cell adhesion molecule-1 is higher in studies that carried out a CR programme based exclusively on exercise,as well as in studies that performed a shorter intervention period or carried out a lower number of exercise sessions(P≤0.05).Conclusion:Our findings support the anti-inflammatory effect of aerobic exercise in patients with *** low number of studies testing interventions using resistance or combined exercise precludes a definitive answer about their anti-inflammatory effects in this patient population.

关键词： coronary artery disease cytokines cell adhesion molecules exercise

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Chemical characterisation of particulate matter in urban transport modes

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Journal of Environmental Sciences 2021年第2期33卷 51-61页

作者： Vania Martins Carolina Correia Ines Cunha-lopes Tiago Faria Evangelia Diapouli Manousos Ioannis Manousakas Konstantinos Eleftheriadis susana Marta Almeida Centro de Ciencias e Tecnologias N ucleares Instituto Superior TecnicoLisbonPortugal Institute of Nuclear and Radiological Sciences and Technology Energy and SafetyN.C.S.R.'Demokritos'AthensGreece

Traffic is a main source of air pollutants in urban areas and consequently daily peak exposures tend to occur during *** exposure to particulate matter(PM)was monitored while cycling and travelling by bus,car and metro along an assigned route in Lisbon(Portugal),focusing on PM_(2.5) and PM_(1)0(PM with aerodynamic diameter<2.5 and 10μm,respectively)mass concentrations and their chemical *** vehicles,the indoor-outdoor interplay was also *** PM_(2.5) mean concentrations were 28±5,31±9,34±9 and 38±21μg/m 3 for bus,bicycle,car and metro modes,*** carbon concentrations when travelling by car were 1.4 to 2.0 times higher than in the other transport modes due to the closer proximity to exhaust *** are marked differences in PM chemical composition depending on transport *** particular,Fe was the most abundant component of metro PM,derived from abrasion of rail-wheel-brake *** concentrations of Zn and Cu in cars and buses were related with brake and tyre wear particles,which can penetrate into the *** the motorised transport modes,Fe,Zn,Cu,Ni and K were correlated,evidencing their common traffic-related *** average,the highest inhaled dose of PM_(2.5) was observed while cycling(55μg),and the lowest in car travels(17μg).Cyclists inhaled higher doses of PM_(2.5) due to both higher inhalation rates and longer journey times,with a clear enrichment in mineral *** presented results evidence the importance of considering the transport mode in exposure assessment studies.

关键词： Traffic Commuting Air pollution Particle chemistry Indoor-outdoor interplay Inhaled dose

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