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https://www.readbyqxmd.com/read/29742432/il-9-and-mast-cells-are-key-players-of-candida-albicans-commensalism-and-pathogenesis-in-the-gut
#1
Giorgia Renga, Silvia Moretti, Vasilis Oikonomou, Monica Borghi, Teresa Zelante, Giuseppe Paolicelli, Claudio Costantini, Marco De Zuani, Valeria Rachela Villella, Valeria Raia, Rachele Del Sordo, Andrea Bartoli, Monia Baldoni, Jean-Christophe Renauld, Angelo Sidoni, Enrico Garaci, Luigi Maiuri, Carlo Pucillo, Luigina Romani
Candida albicans is implicated in intestinal diseases. Identifying host signatures that discriminate between the pathogenic versus commensal nature of this human commensal is clinically relevant. In the present study, we identify IL-9 and mast cells (MCs) as key players of Candida commensalism and pathogenicity. By inducing TGF-β in stromal MCs, IL-9 pivotally contributes to mucosal immune tolerance via the indoleamine 2,3-dioxygenase enzyme. However, Candida-driven IL-9 and mucosal MCs also contribute to barrier function loss, dissemination, and inflammation in experimental leaky gut models and are upregulated in patients with celiac disease...
May 8, 2018: Cell Reports
https://www.readbyqxmd.com/read/29688915/clinical-and-microbiological-effect-of-a-multispecies-probiotic-supplementation-in-celiac-patients-with-persistent-ibs-type-symptoms-a-randomized-double-blind-placebo-controlled-multicenter-trial
#2
Ruggiero Francavilla, Maria Piccolo, Antonio Francavilla, Lorenzo Polimeno, Francesco Semeraro, Fernanda Cristofori, Stefania Castellaneta, Michele Barone, Flavia Indrio, Marco Gobbetti, Maria De Angelis
GOALS: The goals of this study were to evaluate the efficacy and safety of a probiotic mixture in patients with celiac disease (CD) with irritable bowel syndrome (IBS)-type symptoms despite a strict gluten-free diet (GFD). BACKGROUND: About 30% of patients with CD adherent to a GFD suffer from IBS-type symptoms; a possible cause resides in the imbalances of the intestinal microbiota in CD. Probiotics may represent a potential treatment. STUDY: CD patients with IBS-type symptoms entered a prospective, double-blind, randomized placebo-controlled study...
April 23, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29672211/increased-prevalence-of-pathogenic-bacteria-in-the-gut-microbiota-of-infants-at-risk-of-developing-celiac-disease-the-proficel-study
#3
Marta Olivares, Alfonso Benítez-Páez, Giada de Palma, Amalia Capilla, Esther Nova, Gemma Castillejo, Vicente Varea, Ascensión Marcos, José Antonio Garrote, Isabel Polanco, Ester Donat, Carmen Ribes-Koninckx, Carmen Calvo, Luis Ortigosa, Francesc Palau, Yolanda Sanz
Celiac disease (CD) is an immune-mediated enteropathy involving genetic and environmental factors, whose interaction influences disease risk. The intestinal microbiota, including viruses and bacteria, could play a role in the pathological process leading to gluten intolerance. In this study, we investigated the prevalence of pathogens in the intestinal microbiota of infants at familial risk of developing CD. We included 127 full-term newborns with at least one first-degree relative with CD. Infants were classified according to milk-feeding practice (breastfeeding or formula feeding) and HLA-DQ genotype (low, intermediate or high genetic risk)...
April 19, 2018: Gut Microbes
https://www.readbyqxmd.com/read/29504486/early-fecal-microbiota-composition-in-children-who-later-develop-celiac-disease-and-associated-autoimmunity
#4
Anniina Rintala, Iiris Riikonen, Anne Toivonen, Sami Pietilä, Eveliina Munukka, Juha-Pekka Pursiheimo, Laura L Elo, Pekka Arikoski, Kristiina Luopajärvi, Ursula Schwab, Matti Uusitupa, Seppo Heinonen, Erkki Savilahti, Erkki Eerola, Jorma Ilonen
OBJECTIVES: Several studies have reported that the intestinal microbiota composition of celiac disease (CD) patients differs from healthy individuals. The possible role of gut microbiota in the pathogenesis of the disease is, however, not known. Here, we aimed to assess the possible differences in early fecal microbiota composition between children that later developed CD and healthy controls matched for age, sex and HLA risk genotype. MATERIALS AND METHODS: We used 16S rRNA gene sequencing to examine the fecal microbiota of 27 children with high genetic risk of developing CD...
April 2018: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/29458413/gut-microbiota-trajectory-in-early-life-may-predict-development-of-celiac-disease
#5
Marta Olivares, Alan W Walker, Amalia Capilla, Alfonso Benítez-Páez, Francesc Palau, Julian Parkhill, Gemma Castillejo, Yolanda Sanz
BACKGROUND: To investigate whether alterations in the developing intestinal microbiota and immune markers precede celiac disease (CD) onset in infants at familial risk of developing the disease. METHODS: A nested case-control study was carried out as part of a larger prospective cohort study, which included healthy full-term newborns (> 200) with at least one first relative with biopsy-verified CD. The present study includes cases of CD (n = 10) and the best-matched controls (n = 10) who did not develop the disease after 5-year follow-up...
February 20, 2018: Microbiome
https://www.readbyqxmd.com/read/29439526/the-effect-of-oligofructose-enriched-inulin-on-faecal-bacterial-counts-and-microbiota-associated-characteristics-in-celiac-disease-children-following-a-gluten-free-diet-results-of-a-randomized-placebo-controlled-trial
#6
Natalia Drabińska, Elżbieta Jarocka-Cyrta, Lidia Hanna Markiewicz, Urszula Krupa-Kozak
Celiac disease (CD) is associated with intestinal microbiota alterations. The administration of prebiotics could be a promising method of restoring gut homeostasis in CD. The aim of this study was to evaluate the effect of prolonged oligofructose-enriched inulin (Synergy 1) administration on the characteristics and metabolism of intestinal microbiota in CD children following a gluten-free diet (GFD). Thirty-four paediatric CD patients (mean age 10 years; 62% females) on a GFD were randomized into two experimental groups receiving Synergy 1 (10 g/day) or placebo (maltodextrin; 7 g/day) for 3 months...
February 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29204051/intestinal-epithelium-intraepithelial-lymphocytes-and-the-gut-microbiota-key-players-in-the-pathogenesis-of-celiac-disease
#7
REVIEW
Bożena Cukrowska, Agnieszka Sowińska, Joanna Beata Bierła, Elżbieta Czarnowska, Anna Rybak, Urszula Grzybowska-Chlebowczyk
Celiac disease (CD) is a chronic immune-mediated disorder triggered by the ingestion of gluten in genetically predisposed individuals. Before activating the immune system, gluten peptides are transferred by the epithelial barrier to the mucosal lamina propria, where they are deamidated by intestinal tissue transglutaminase 2. As a result, they strongly bind to human leucocyte antigens (HLAs), especially HLA-DQ2 and HLA-DQ8, expressed on antigen-presenting cells. This induces an inflammatory response, which results in small bowel enteropathy...
November 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29140275/old-fashioned-vs-ultra-processed-based-current-diets-possible-implication-in-the-increased-susceptibility-to-type-1-diabetes-and-celiac-disease-in-childhood
#8
REVIEW
Sandra V Aguayo-Patrón, Ana M Calderón de la Barca
Ultra-processed foods are ready-to-heat and ready-to-eat products created to replace traditional homemade meals and dishes due to convenience and accessibility. Because of their low-fiber and high-fat and sugar composition, these foodstuffs could induce a negative impact on health. They are partially responsible for obesity and chronic non-transmissible diseases; additionally, they could impact in the prevalence of autoimmune diseases such as type 1 diabetes and celiac disease. The rationale is that the nutritional composition of ultra-processed foodstuffs can induce gut dysbiosis, promoting a pro-inflammatory response and consequently, a "leaky gut"...
November 15, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29119385/intestinal-permeability-in-relapsing-remitting-multiple-sclerosis
#9
REVIEW
M C Buscarinu, S Romano, R Mechelli, R Pizzolato Umeton, M Ferraldeschi, A Fornasiero, R Reniè, B Cerasoli, E Morena, C Romano, N D Loizzo, R Umeton, M Salvetti, G Ristori
Changes of intestinal permeability (IP) have been extensively investigated in inflammatory bowel diseases (IBD) and celiac disease (CD), underpinned by a known unbalance between microbiota, IP and immune responses in the gut. Recently the influence of IP on brain function has greatly been appreciated. Previous works showed an increased IP that preceded experimental autoimmune encephalomyelitis development and worsened during disease with disruption of TJ. Moreover, studying co-morbidity between Crohn's disease and MS, a report described increased IP in a minority of cases with MS...
January 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28970717/helminths-as-an-alternative-therapy-for-intestinal-diseases
#10
EDITORIAL
Aytan Miranda Sipahi, Daniel Machado Baptista
Animal models and clinical studies have shown that helminth infections exert immunomodulatory activity, altering intestinal permeability and providing a potential beneficial action on autoimmune and inflammatory disorders in human beings, such as inflammatory bowel disease (IBD) and celiac disease. This is consistent with the theory that intestinal microbiota is responsible for shaping human immunological responses. With the arrival of the immunobiologic era and the use of antibodies, we propose a distinctive pathway for treating patients with IBD and celiac disease...
September 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28936206/an-in-vitro-fermentation-study-on-the-effects-of-gluten-friendly-tm-bread-on-microbiota-and-short-chain-fatty-acids-of-fecal-samples-from-healthy-and-celiac-subjects
#11
Adele Costabile, Triana Bergillos-Meca, Loretta Landriscina, Antonio Bevilacqua, Isidro Gonzalez-Salvador, Maria R Corbo, Leonardo Petruzzi, Milena Sinigaglia, Carmela Lamacchia
Recently, an innovative gluten detoxification method called Gluten FriendlyTM (GF) has been developed. It induces structural modifications, which abolish the antigenic capacity of gluten and reduce the in vitro immunogenicity of the most common epitopes involved in celiac disease, without compromising the nutritional and technological properties. This study investigated the in vitro effects of GF bread (GFB) on the fecal microbiota from healthy and celiac individuals by a three-stage continuous fermentative system, which simulates the colon (vessel 1, proximal colon; vessel 2, transverse colon; and vessel 3, distal colon), as well as on the production of short chain fatty acids (SCFA, acetate, propionate, butyrate)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28913339/ulcerative-gastritis-and-esophagitis-in-two-children-with-sarcina-ventriculi-infection
#12
Tim G J de Meij, Michiel P van Wijk, Aart Mookhoek, Andries E Budding
Sarcina ventriculi is a Gram-positive, obligate anaerobic coccus, with a characteristic morphology. Only 22 cases of human infections by this microorganism, including 7 in children, have been reported in literature so far. Affected subjects usually present with abdominal pain, nausea, vomiting, and delayed gastric emptying. However, life-threatening complications, like emphysematous gastritis and gastric perforation have also been described. Gastroparesis and gastric outlet obstruction have been considered as a potential etiologic factor...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28913337/new-insights-into-the-pathogenesis-of-celiac-disease
#13
REVIEW
Valli De Re, Raffaella Magris, Renato Cannizzaro
Celiac disease (CD) is an autoimmune and multisystem gluten-related disorder that causes symptoms involving the gastrointestinal tract and other organs. Pathogenesis of CD is only partially known. It had been established that ingestion of gluten proteins present in wheat and other cereals are necessary for the disease and develops in individuals genetically predisposed carrying the DQ2 or DQ8 human leukocyte antigen haplotypes. In this review, we had pay specific attention on the last discoveries regarding the three cellular components mainly involved in the development and maintenance of CD: T-cells, B-cells, and microbioma...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28761890/microscopic-colitis-after-fecal-microbiota-transplant
#14
Matthew J Fasullo, Yasir Al-Azzawi, Jeffrey Abergel
Microscopic colitis (MC) is an inflammatory condition of the large bowel that is associated with chronic, nonbloody diarrhea. Colonoscopy usually demonstrates normal mucosa, while tissue biopsy reveals intraepithelial lymphocytes or a subepithelial collagen band. Although no specific antibody has been discovered, MC is associated with several autoimmune disorders such as celiac disease, Hashimoto's thyroiditis, and rheumatoid arthritis. There are only a small number of case reports documenting possible hereditary MC cases, but up to 12% of patients with MC have a family history of inflammatory bowel disease...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28723981/intestinal-microbiota-in-digestive-diseases
#15
REVIEW
Maria do Carmo Friche Passos, Joaquim Prado Moraes-Filho
BACKGROUND: In recent years, especially after the development of sophisticated metagenomic studies, research on the intestinal microbiota has increased, radically transforming our knowledge about the microbiome and its association with health maintenance and disease development in humans. Increasing evidence has shown that a permanent alteration in microbiota composition or function (dysbiosis) can alter immune responses, metabolism, intestinal permeability, and digestive motility, thereby promoting a proinflammatory state...
July 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28702325/the-human-digestive-tract-has-proteases-capable-of-gluten-hydrolysis
#16
Sergio Gutiérrez, Jenifer Pérez-Andrés, Honorina Martínez-Blanco, Miguel Angel Ferrero, Luis Vaquero, Santiago Vivas, Javier Casqueiro, Leandro B Rodríguez-Aparicio
OBJECTIVE: To identify, purify, and characterize the proteins responsible for glutenase activity in the feces of healthy subjects and patients with celiac disease (CD). METHODS: Sixteen subjects were included in this study; 8 were healthy with no known food intolerances, and 8 were treated CD patients on a gluten-free diet. Fecal samples were homogenized, and precipitated proteins were purified by chromatography. Glutenase activity was evaluated by bioassays, zymography, and high-performance liquid chromatography with immunogenic 33-mer, 19-mer, and 13-mer gliadin peptides...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28526528/gluten-degrading-bacteria-are-present-in-the-human-small-intestine-of-healthy-volunteers-and-celiac-patients
#17
Alexandra R Herrán, Jénifer Pérez-Andrés, Alberto Caminero, Esther Nistal, Santiago Vivas, José María Ruiz de Morales, Javier Casqueiro
Gluten is the only known environmental factor that triggers celiac disease. Several studies have described an imbalance between the intestinal microbiota of different individuals based on diagnoses. Moreover, recent studies have suggested that human bacteria may play an important role in gluten hydrolysis. However, there has been no research focusing on the small intestine. This study aimed to characterize the adult small intestine microbiota possibly implicated in gluten hydrolysis. Duodenal biopsies from different diagnosed individuals were cultured in a gluten-containing medium, and the grown microbiota was analyzed by culture dependent/independent methods...
May 16, 2017: Research in Microbiology
https://www.readbyqxmd.com/read/28507424/migraine-celiac-disease-and-intestinal-microbiota
#18
COMMENT
Hakim Rahmoune, Nada Boutrid
Investigators from four European tertiary care hospitals (in Paris, France; Milan, Udine and Perugia, Italy) performed a case-control study of children and adolescents aged 6 to 17 years diagnosed with primary headaches in the emergency department by a pediatric neurologist using the validated ICHD-3 criteria.
February 2017: Pediatric Neurology Briefs
https://www.readbyqxmd.com/read/28417435/lachnospiraceae-shift-in-the-microbial-community-of-mice-faecal-sample-effects-on-water-immersion-restraint-stress
#19
Shiyin Li, Zelin Wang, Yun Yang, Sha Yang, Chenchen Yao, Kaiyun Liu, Sixin Cui, Quanming Zou, Hongwu Sun, Gang Guo
Stress, including both psychological and physical stimulation, can cause changes in the microbiota and mucosal function of the gastrointestinal system. There are few research studies available about the faecal microbiota changes after stress, such as water immersion restraint stress (WIRS). Therefore, in this study, we focused on analysing the composition changes of faecal microbiota in WIRS mice. The WIRS model, in which Blab/c mice were immersed in 21 ± 2 °C water for 4 h each day for 14 days, was established...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28396623/modified-mediterranean-diet-for-enrichment-of-short-chain-fatty-acids-potential-adjunctive-therapeutic-to-target-immune-and-metabolic-dysfunction-in-schizophrenia
#20
Jamie Joseph, Colin Depp, Pei-An B Shih, Kristen S Cadenhead, Geert Schmid-Schönbein
Growing interest in gut and digestive processes and their potential link to brain and peripheral based inflammation or biobehavioral phenotypes has led to an increasing number of basic and translational scientific reports focused on the role of gut microbiota within the context of neuropsychiatric disorders. However, the effect of dietary modification on specific gut metabolites, in association with immune, metabolic, and psychopathological functioning in schizophrenia spectrum disorders has not been well characterized...
2017: Frontiers in Neuroscience
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