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Celiac microbiota

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https://www.readbyqxmd.com/read/29204051/intestinal-epithelium-intraepithelial-lymphocytes-and-the-gut-microbiota-key-players-in-the-pathogenesis-of-celiac-disease
#1
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
#2
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-permeabiliy-in-relapsing-remitting-multiple-sclerosis
#3
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...
November 8, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28970717/helminths-as-an-alternative-therapy-for-intestinal-diseases
#4
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
#5
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 Friendly(TM) (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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28346935/dysbiosis-in-the-neonatal-period-role-of-cesarean-section
#15
REVIEW
Josef Neu
From epidemiological studies and studies done evaluating microbiomes in infants, there is a strong signal that the infants born by elective cesarean section (C-section) develop microbiota that differs from those babies born by vaginal delivery. Epidemiological studies show increased odds ratios for the development of immunological disorders such as type 1 diabetes, celiac disease, asthma, allergic diseases as well as metabolic diseases such as obesity in babies born by C-section. These are interesting associations, and if supported by additional studies that rigorously control for confounding factors, they will have major public health implications...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28340001/early-life-origin-of-intestinal-inflammatory-disorders
#16
REVIEW
Delphine Ley, Jean-Luc Desseyn, Mona Mischke, Jan Knol, Dominique Turck, Frédéric Gottrand
A growing body of evidence supports the concept of perinatal programming through which the perinatal environment affects the development of the fetus and infant, thereby modifying the risk profile for disease later in life. Increasing attention is focusing on the role of the early environment in the development of chronic intestinal disorders. Epidemiological studies have highlighted the link between perinatal factors, such as breastfeeding, cesarean delivery, and antibiotic use, and an increased risk for inflammatory bowel disease and/or celiac disease...
March 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28324102/duodenal-mucosa-of-patients-with-type-1-diabetes-shows-distinctive-inflammatory-profile-and-microbiota
#17
Silvia Pellegrini, Valeria Sordi, Andrea Mario Bolla, Diego Saita, Roberto Ferrarese, Filippo Canducci, Massimo Clementi, Francesca Invernizzi, Alberto Mariani, Riccardo Bonfanti, Graziano Barera, Pier Alberto Testoni, Claudio Doglioni, Emanuele Bosi, Lorenzo Piemonti
Context: Increasing evidences suggest a correlation between gut and type 1 diabetes (T1D). Objective: The objective of this study is to evaluate the gut inflammatory profile and microbiota in patients with T1D compared with healthy control (CTRL) subjects and patients with celiac disease (CD) as gut inflammatory disease controls. Design/Setting/Participants: The inflammatory status and microbiome composition were evaluated in biopsies of the duodenal mucosa of patients with T1D (n = 19), in patients with CD (n = 19), and CTRL subjects (n = 16) recruited at San Raffaele Scientific Institute, in Milan, Italy, between 2009 and 2015...
May 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28317399/recent-advances-in-pediatric-celiac-disease
#18
Grace J Lee, John Y Kao
The incidence of celiac disease (CD) has increased over the last half-century, resulting in rising interest in identifying risk factors for CD. The necessity of duodenal biopsies in the diagnosis of CD has recently been challenged. Areas covered: This review covers the recent literature regarding the role of infant feeding practices, including breastfeeding and timing of gluten introduction, and the microbiota in the development of CD. Additionally, the application of the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition guidelines for a non-biopsy approach to the diagnosis of CD is reviewed...
June 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28300220/effects-of-gliadin-consumption-on-the-intestinal-microbiota-and-metabolic-homeostasis-in-mice-fed-a-high-fat-diet
#19
Li Zhang, Daniel Andersen, Henrik Munch Roager, Martin Iain Bahl, Camilla Hartmann Friis Hansen, Niels Banhos Danneskiold-Samsøe, Karsten Kristiansen, Ilinca Daria Radulescu, Christian Sina, Henrik Lauritz Frandsen, Axel Kornerup Hansen, Susanne Brix, Lars I Hellgren, Tine Rask Licht
Dietary gluten causes severe disorders like celiac disease in gluten-intolerant humans. However, currently understanding of its impact in tolerant individuals is limited. Our objective was to test whether gliadin, one of the detrimental parts of gluten, would impact the metabolic effects of an obesogenic diet. Mice were fed either a defined high-fat diet (HFD) containing 4% gliadin (n = 20), or a gliadin-free, isocaloric HFD (n = 20) for 23 weeks. Combined analysis of several parameters including insulin resistance, histology of liver and adipose tissue, intestinal microbiota in three gut compartments, gut barrier function, gene expression, urinary metabolites and immune profiles in intestinal, lymphoid, liver and adipose tissues was performed...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28288222/-the-benefits-of-breastfeeding-and-associated-risks-of-replacement-with-baby-formulas
#20
REVIEW
Paulina Brahm, Verónica Valdés
Breastfeeding is the nourishment designed by nature for the newborn and the infant; however its prevalence is nowadays not optimal. The aim of this article is to review the current evidence of the benefits of breastfeeding for children and society, and to elaborate the risks associated with the replacement of lactation with baby formulas. Breastfeeding is a protective factor for several infectious, atopic, and cardiovascular diseases as well as for leukaemia, necrotising enterocolitis, celiac disease, and inflammatory bowel disease...
February 2017: Revista Chilena de Pediatría
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