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Alessio Fasano

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
Getinet Woyessa, Andrea Fasano, Alessio Stefani, Christos Markos, Kristian Nielsen, Henrik K Rasmussen, Ole Bang
We have fabricated the first single-mode step-index and humidity insensitive polymer optical fiber operating in the 850 nm wavelength ranges. The step-index preform is fabricated using injection molding, which is an efficient method for cost effective, flexible and fast preparation of the fiber preform. The fabricated single-mode step-index (SI) polymer optical fiber (POF) has a 4.8µm core made from TOPAS grade 5013S-04 with a glass transition temperature of 134°C and a 150 µm cladding made from ZEONEX grade 480R with a glass transition temperature of 138°C...
January 25, 2016: Optics Express
Stefania Senger, Anna Sapone, Maria Rosaria Fiorentino, Giuseppe Mazzarella, Gregory Y Lauwers, Alessio Fasano
BACKGROUND: In celiac disease (CD), intestinal epithelium damage occurs secondary to an immune insult and is characterized by blunting of the villi and crypt hyperplasia. Similarities between Hedgehog (Hh)/BMP4 downregulation, as reported in a mouse model, and CD histopathology, suggest mechanistic involvement of Hh/BMP4/WNT pathways in proliferation and differentiation of immature epithelial cells in the context of human intestinal homeostasis and regeneration after damage. Herein we examined the nature of intestinal crypt hyperplasia and involvement of Hh/BMP4 in CD histopathology...
2015: PloS One
Maureen M Leonard, Stephanie Camhi, Tania B Huedo-Medina, Alessio Fasano
In the past it was believed that genetic predisposition and exposure to gluten were necessary and sufficient to develop celiac disease (CD). Recent studies however suggest that loss of gluten tolerance can occur at any time in life as a consequence of other environmental stimuli. Many environmental factors known to influence the composition of the intestinal microbiota are also suggested to play a role in the development of CD. These include birthing delivery mode, infant feeding, and antibiotic use. To date no large-scale longitudinal studies have defined if and how gut microbiota composition and metabolomic profiles may influence the loss of gluten tolerance and subsequent onset of CD in genetically-susceptible individuals...
November 2015: Nutrients
Karen M Lammers, Marcello Chieppa, Lunhua Liu, Song Liu, Tatsushi Omatsu, Mirkka Janka-Junttila, Vincenzo Casolaro, Hans-Christian Reinecker, Carole A Parent, Alessio Fasano
BACKGROUND: Gliadin, the immunogenic component within gluten and trigger of celiac disease, is known to induce the production of Interleukin-8, a potent neutrophil-activating and chemoattractant chemokine. We sought to study the involvement of neutrophils in the early immunological changes following gliadin exposure. METHODS: Utilizing immunofluorescence microscopy and flow cytometry, the redistribution of major tight junction protein, Zonula occludens (ZO)-1, and neutrophil recruitment were assessed in duodenal tissues of gliadin-gavaged C57BL/6 wild-type and Lys-GFP reporter mice, respectively...
2015: PloS One
Gloria Serena, Stephanie Camhi, Craig Sturgeon, Shu Yan, Alessio Fasano
Celiac disease (CD) and type 1 diabetes (T1D) are autoimmune conditions in which dietary gluten has been proven or suggested to play a pathogenic role. In CD; gluten is established as the instigator of autoimmunity; the autoimmune process is halted by removing gluten from the diet; which allows for resolution of celiac autoimmune enteropathy and subsequent normalization of serological markers of the disease. However; an analogous causative agent has not yet been identified for T1D. Nevertheless; the role of dietary gluten in development of T1D and the potentially beneficial effect of removing gluten from the diet of patients with T1D are still debated...
September 2015: Nutrients
Daniel A Leffler, Peter H R Green, Alessio Fasano
Coeliac disease is a common disorder that can arise at any age and typically presents with a broad spectrum of symptoms. The disease is thought to be underdiagnosed, in part owing to the fact that coeliac disease is often characterized by associated conditions and extraintestinal manifestations that can misdirect and impede diagnosis. Some of these manifestations are direct consequences of autoimmunity, such as dermatitis herpetiformis or gluten ataxia, whereas others are indirectly related to inflammation and/or malabsorption including anaemia, osteoporosis, short stature and delayed puberty...
October 2015: Nature Reviews. Gastroenterology & Hepatology
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