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Alessio Fasano

Francesco Ciccia, Giuliana Guggino, Aroldo Rizzo, Riccardo Alessandro, Michele Maria Luchetti, Simon Milling, Laura Saieva, Heleen Cypers, Tommaso Stampone, Paola Di Benedetto, Armando Gabrielli, Alessio Fasano, Dirk Elewaut, Giovanni Triolo
BACKGROUND: Dysbiosis has been recently demonstrated in patients with ankylosing spondylitis (AS) but its implications in the modulation of intestinal immune responses have never been studied. The aim of this study was to investigate the role of ileal bacteria in modulating local and systemic immune responses in AS. METHODS: Ileal biopsies were obtained from 50 HLA-B27(+) patients with AS and 20 normal subjects. Silver stain was used to visualise bacteria. Ileal expression of tight and adherens junction proteins was investigated by TaqMan real-time (RT)-PCR and immunohistochemistry...
January 9, 2017: Annals of the Rheumatic Diseases
Thomas Greuter, Sandra Schmidlin, Jaqueline Lattmann, Matthias Stotz, Romina Lehmann, Jonas Zeitz, Michael Scharl, Benjamin Misselwitz, Daniel Pohl, Michael Fried, Radu Tutuian, Alessio Fasano, Alain M Schoepfer, Gerhard Rogler, Luc Biedermann, Stephan R Vavricka
BACKGROUND: Non-celiac gluten sensitivity (NCGS) and emerging treatment options are hot topics in the celiac disease (CeD) scientific literature. However, very little is known about the perspective on these issues of CeD patients. METHODS: We performed a large patient survey among unselected CeD patients in Switzerland. RESULTS: A total of 1689 patients were analyzed. 57.5% have previously heard of NCGS. 64.5% believe in the existence of this entity...
December 7, 2016: Digestive and Liver Disease
Alessio Fasano
No abstract text is available yet for this article.
January 2017: American Journal of Clinical Nutrition
Maria Fiorentino, Anna Sapone, Stefania Senger, Stephanie S Camhi, Sarah M Kadzielski, Timothy M Buie, Deanna L Kelly, Nicola Cascella, Alessio Fasano
BACKGROUND: Autism spectrum disorders (ASD) are complex conditions whose pathogenesis may be attributed to gene-environment interactions. There are no definitive mechanisms explaining how environmental triggers can lead to ASD although the involvement of inflammation and immunity has been suggested. Inappropriate antigen trafficking through an impaired intestinal barrier, followed by passage of these antigens or immune-activated complexes through a permissive blood-brain barrier (BBB), can be part of the chain of events leading to these disorders...
2016: Molecular Autism
Gloria Serena, Shu Yan, Stephanie Camhi, Shilpi Patel, Rosiane S Lima, Anna Sapone, Maureen M Leonard, Rupa Mukherjee, Barbara J Nath, Karen M Lammers, Alessio Fasano
Celiac disease (CD) is an autoimmune enteropathy triggered by gluten and characterized by a strong Th1/Th17 immune response in the small intestine. Treg cells are CD4(+) CD25(++) FOXP3(+) cells that regulate the immune response. Conversely to its counterpart, FOXP3 full length (FL), the alternatively spliced isoform FOXP3 Δ2 cannot properly down-regulate Th17 driven immune response. Since the active state of CD has been associated with impairments in Treg cell function, we aimed at determining whether imbalances between FOXP3 isoforms may be associated with the disease...
December 9, 2016: Clinical and Experimental Immunology
Carlo Catassi, Alessio Fasano
December 3, 2016: Nutrients
Matteo Fasano, Thomas Humplik, Alessio Bevilacqua, Michael Tsapatsis, Eliodoro Chiavazzo, Evelyn N Wang, Pietro Asinari
A comprehensive understanding of molecular transport within nanoporous materials remains elusive in a broad variety of engineering and biomedical applications. Here, experiments and atomistic simulations are synergically used to elucidate the non-trivial interplay between nanopore hydrophilicity and surface barriers on the overall water transport through zeolite crystals. At these nanometre-length scales, these results highlight the dominating effect of surface imperfections with reduced permeability on the overall water transport...
October 3, 2016: Nature Communications
Richard L Guerrant, Alvaro M Leite, Relana Pinkerton, Pedro H Q S Medeiros, Paloma A Cavalcante, Mark DeBoer, Margaret Kosek, Christopher Duggan, Andrew Gewirtz, Jonathan C Kagan, Anna E Gauthier, Jonathan Swann, Jordi Mayneris-Perxachs, David T Bolick, Elizabeth A Maier, Marjorie M Guedes, Sean R Moore, William A Petri, Alexandre Havt, Ila F Lima, Mara de Moura Gondim Prata, Josyf C Michaleckyj, Rebecca J Scharf, Craig Sturgeon, Alessio Fasano, Aldo A M Lima
Critical to the design and assessment of interventions for enteropathy and its developmental consequences in children living in impoverished conditions are non-invasive biomarkers that can detect intestinal damage and predict its effects on growth and development. We therefore assessed fecal, urinary and systemic biomarkers of enteropathy and growth predictors in 375 6-26 month-old children with varying degrees of malnutrition (stunting or wasting) in Northeast Brazil. 301 of these children returned for followup anthropometry after 2-6m...
2016: PloS One
Stephan R Vavricka, Teresa Stelzer, Jaqueline Lattmann, Matthias Stotz, Romina Lehmann, Jonas Zeitz, Michael Scharl, Benjamin Misselwitz, Daniel Pohl, Michael Fried, Radu Tutuian, Alessio Fasano, Alain M Schoepfer, Gerhard Rogler, Luc Biedermann, Thomas Greuter
BACKGROUND: Although the diagnostic process in celiac disease (CeD) has been addressed in several international guidelines, little is known about the actual proceeding in current clinical practice. This study investigated the initial presentation, the diagnostic process, follow-up evaluations, and adherence to a gluten-free diet in CeD patients in a real-life setting in Switzerland from a patient's perspective. METHODS: We performed a large patient survey among unselected CeD patients in Switzerland...
September 15, 2016: Journal of Clinical Gastroenterology
Victoria J Martin, Maureen M Leonard, Lauren Fiechtner, Alessio Fasano
No abstract text is available yet for this article.
September 12, 2016: Journal of Pediatrics
John Snyder, J Decker Butzner, Amy R DeFelice, Alessio Fasano, Stefano Guandalini, Edwin Liu, Kimberly P Newton
Although the need for effective long-term follow-up for patients with celiac disease (CD) has been recognized by many expert groups, published practice guidelines have not provided a clear approach for the optimal management of these patients. In an attempt to provide a thoughtful and practical approach for managing these patients, a group of experts in pediatric CD performed a critical review of the available literature in 6 categories associated with CD to develop a set of best practices by using evidence-based data and expert opinion...
September 2016: Pediatrics
Rosangela Salerno-Goncalves, Alessio Fasano, Marcelo B Sztein
Because cells growing in a three-dimensional (3-D) environment have the potential to bridge many gaps of cell cultivation in 2-D environments (e.g., flasks or dishes). In fact, it is widely recognized that cells grown in flasks or dishes tend to de-differentiate and lose specialized features of the tissues from which they were derived. Currently, there are mainly two types of 3-D culture systems where the cells are seeded into scaffolds mimicking the native extracellular matrix (ECM): (a) static models and (b) models using bioreactors...
2016: Journal of Visualized Experiments: JoVE
Stephan R Vavricka, Nina Vadasz, Matthias Stotz, Romina Lehmann, Diana Studerus, Thomas Greuter, Pascal Frei, Jonas Zeitz, Michael Scharl, Benjamin Misselwitz, Daniel Pohl, Michael Fried, Radu Tutuian, Alessio Fasano, Alain M Schoepfer, Gerhard Rogler, Luc Biedermann
BACKGROUND: There is insufficient data on diagnostic delay and associated factors in celiac disease (CeD) as well as on its potential impact on the course of disease. METHODS: Specifically taking its two components - patients' and doctors' delay - into account, we performed a large systematic patient survey study among unselected CeD patients in Switzerland. RESULTS: We found a mean/median total diagnostic delay of 87/24 months (IQR 5-96), with a range from 0 up to 780 months and roughly equal fractions of patients' and doctors' delay...
October 2016: Digestive and Liver Disease
Gloria Serena, Maureen M Leonard, Stephanie Camhi, Tania B Huedo-Medina, Alessio Fasano
Over recent years we have seen rising many clinical and scientific innovations about celiac disease (CE), however the most important innovation that will contribute to change the future of the research and clinic in this field is the natural history of the disease. For many years it has been though that a genetic predisposition and the exposure to gluten were necessary and sufficient to develop CE. Recent studies, however, suggest that the loss of tolerance to gluten may occur in any moment of life upon certain conditions...
June 2016: Recenti Progressi in Medicina
Terez Shea-Donohue, Alessio Fasano, Aiping Zhao, Luigi Notari, Shu Yan, Rex Sun, Jennifer A Bohl, Neemesh Desai, Greg Tudor, Motoko Morimoto, Catherine Booth, Alexander Bennett, Ann M Farese, Thomas J MacVittie
In this study, nonhuman primates (NHPs) exposed to lethal doses of total body irradiation (TBI) within the gastrointestinal (GI) acute radiation syndrome range, sparing ∼5% of bone marrow (TBI-BM5), were used to evaluate the mechanisms involved in development of the chronic GI syndrome. TBI increased mucosal permeability in the jejunum (12-14 Gy) and proximal colon (13-14 Gy). TBI-BM5 also impaired mucosal barrier function at doses ranging from 10-12.5 Gy in both small intestine and colon. Timed necropsies of NHPs at 6-180 days after 10 Gy TBI-BM5 showed that changes in small intestine preceded those in the colon...
June 2016: Radiation Research
Helen K Delichatsios, Maureen M Leonard, Alessio Fasano, Vania Nosé
Presentation of Case. Dr. Maureen M. Leonard: A 37-year-old woman was admitted to a psychiatric hospital for adult-onset psychosis. The patient had been healthy and studying for a doctoral degree when she began having symptoms of psychosis. Her first symptom was a belief that "people were talking..
May 12, 2016: New England Journal of Medicine
R Salerno-Goncalves, F Safavie, A Fasano, M B Sztein
Secretory immunoglobulin A (SIgA) antibodies play an important role in protecting the mucosal surfaces against pathogens and maintaining homeostasis with the commensal microbiota. Because a substantial portion of the gut microbiota is coated with SIgA, we hypothesized that microbiota-SIgA complexes are important for the maintenance of gut homeostasis. Here we investigated the relationship between microbiota-SIgA complexes and inflammatory epithelial cell responses. We used a multi-cellular three-dimensional (3D) organotypical model of the human intestinal mucosa composed of an intestinal epithelial cell line and primary human lymphocytes/monocytes, endothelial cells and fibroblasts...
September 2016: Clinical and Experimental Immunology
Ivor D Hill, Alessio Fasano, Stefano Guandalini, Edward Hoffenberg, Joseph Levy, Norelle Reilly, Ritu Verma
Dietary exclusion of gluten-containing products has become increasingly popular in the general population, and currently ∼30% of people in the United States are limiting gluten ingestion. Although celiac disease (CD), wheat allergy (WA), and nonceliac gluten sensitivity (NCGS) constitute a spectrum of gluten-related disorders that require exclusion of gluten from the diet, together these account for a relatively small percentage of those following a gluten-free diet, and the vast majority has no medical necessity for doing so...
July 2016: Journal of Pediatric Gastroenterology and Nutrition
Maureen M Leonard, Alessio Fasano
No abstract text is available yet for this article.
2016: Expert Review of Gastroenterology & Hepatology
Alessio Fasano
No abstract text is available yet for this article.
May 7, 2016: Lancet
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