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Environmental Health Perspectives May 2024The anticaking agent, used in a wide variety of powdered food products, interfered with immune tolerance of ovalbumin, a model antigen; and it worsened gut inflammation...
The anticaking agent, used in a wide variety of powdered food products, interfered with immune tolerance of ovalbumin, a model antigen; and it worsened gut inflammation in a mouse model of celiac disease.
Topics: Animals; Mice; Food Hypersensitivity; Silicon Dioxide; Ovalbumin; Food Additives; Celiac Disease; Disease Models, Animal; Nanoparticles
PubMed: 38814861
DOI: 10.1289/EHP14923 -
Turkish Journal of Medical Sciences 2024Intestinal neomucosa formation is a technique defined for the treatment of short bowel syndrome. This study evaluates the effect of glutamine and omega-3 fatty acids on...
BACKGROUND/AIM
Intestinal neomucosa formation is a technique defined for the treatment of short bowel syndrome. This study evaluates the effect of glutamine and omega-3 fatty acids on the growth of intestinal neomucosa on the colonic serosal surface has been evaluated.
MATERIALS AND METHODS
Thirty-two adult male Sprague-Dawley rats were randomly divided into 4 groups: sham, control, glutamine, and omega-3. Laparotomy was performed on all groups. For rats other than the sham group, a 1-cm full-thickness incision was made 4 cm proximal to the ileocecal valve, and colonic serosal surface was sutured as a serosal patch over these openings. By using the oral gavage technique, the glutamine group was ingested with 200 mg/kg/day of glutamine, and the omega-3 group was ingested with 100 mg/kg/day of omega-3 fatty acids. At the end of 14 days, the rats were euthanized, blood specimens were collected, and intestinal segments, including serosal patches, were excised.
RESULTS
Transforming growth factor-beta was significantly lower in the glutamine group compared to the control group. Similarly, fibroblast growth factor-2 was significantly lower in the glutamine group compared to the sham group. Intestinal neomucosa formation was observed in 100% of rats in the glutamine group. In the control and omega-3 groups, intestinal neomucosa formation was observed in 57.1% and 60% of rats, respectively. The inflammatory response, granulation tissue formation, and fibroblastic activity were more severe in the rats of the glutamine and omega-3 groups.
CONCLUSION
The intestinal neomucosa formation is an experimental technique, and both glutamine and omega-3 fatty acids have the potential to positively affect inflammatory response, granulation tissue formation, and fibroblastic activity. Specifically, glutamine has a favorable effect on intestinal neomucosa formation.
Topics: Animals; Glutamine; Fatty Acids, Omega-3; Rats, Sprague-Dawley; Male; Rats; Colon; Short Bowel Syndrome; Serous Membrane; Intestinal Mucosa
PubMed: 38812652
DOI: 10.55730/1300-0144.5766 -
Voprosy Pitaniia 2024The study of the genetic determinants of the disaccharidase activity opens up new prospects for improving diagnostics and choosing medical tactics in gastroenterology.... (Review)
Review
The study of the genetic determinants of the disaccharidase activity opens up new prospects for improving diagnostics and choosing medical tactics in gastroenterology. of the study was to systematize the data on the role of the sucrase-isomaltase gene (SI) in regulating sucrose metabolism and the contribution of SI mutations to the prevalence of sucrose malabsorption disorders (sucrase-isomaltase deficiency, SID) and certain forms of enterological pathology in different population groups. . A review of the peer-reviewed scientific literature, mainly in the PubMed database (https://pubmed.ncbi.nlm.nih.gov) and eLibrary (https://elibrary.ru), was conducted using key words: carbohydrate malabsorption, sucrase, sucrase-isomaltase deficiency, sucrase-isomaltase SI gene. The search depth was not specified, but particular attention was paid to recent publications. The gnomAD database (https://www.ncbi.nlm. nih.gov/snp/rs781470490) was also used. . According to the review results, 37 out of 150 known SI gene mutations have been confirmed to contribute to reduced sucrase activity or restricted sucrase production. The prevalence of point mutations in the SI gene is estimated at 0.0006%, but carrier rates of the SI delAG deletion (rs781470490), manifested as homozygosity in SID, are very high (5-21%) in indigenous populations of Arctic regions in East Asia and America. Medicalgenetic research methods improve the accuracy of differential diagnosis of primary and secondary SID and other forms of disaccharide and polysaccharide malabsorption. The formation of databases on the prevalence of genetic determinants of sucrase-isomaltase insufficiency is a promising way to refine the epidemiology of SID. There is an increased (0.2-2.3%) risk of clinical manifestations of SID in homozygous carriers of the SI delAG mutation in the Chukotka, Kamchatka, and Northern Priochotye populations. Verification of reports on a less pronounced tendency to lipid metabolism disorders in SI delAG carriers compared with the control group is recommended. . Manifestations of mutant SI variants in the phenotype are associated with the presence of accompanying carbohydrate malabsorption variants and specific gut microbiota. The SI 15Phe variant (rs9290264) may contribute to the development of irritable bowel syndrome.
Topics: Humans; Carbohydrate Metabolism, Inborn Errors; Sucrase-Isomaltase Complex; Mutation; Sucrose; Malabsorption Syndromes
PubMed: 38809799
DOI: 10.33029/0042-8833-2024-93-2-52-62 -
Advanced Biomedical Research 2024Celiac disease is popular and needs a proper and constant gluten-free diet. However, data on the experience of the disease by children are insufficient. A few children...
BACKGROUND
Celiac disease is popular and needs a proper and constant gluten-free diet. However, data on the experience of the disease by children are insufficient. A few children have difficulty adjusting their lifestyles, and gluten-free foods are difficult for them. The present study aimed to find influential factors in the growth disorders and nonresponse to the treatment diet in celiac patients.
MATERIALS AND METHODS
We gave a list of all children with celiac disease to the project manager and according to the criteria extracted additional information from their files. Duodenal biopsies on 382 patients with suspected celiac disease and 93 patients with positive pathology were included in the study, regardless of antibody and genetic titer, then analyzed their information using appropriate statistical tests.
RESULTS
The mean age of individuals was 9.48 ± 3.88, and 35 were male and 58 female. At the age of <5, there was more growth disorder than other age groups. The recovery percentage in short stature was significantly better in children with higher marches, and they responded better to the treatment regimen. Individuals with comorbidities had higher anti-tTG and lower Hb levels, higher incidence of growth disorder, did not respond to the treatment regimen. Those with a first-degree relative with celiac disease had a lower growth disorder than others.
CONCLUSION
Identifying and correcting nutritional disorders in patients with celiac disease need to evaluate persistent symptoms and identify their causes to plan appropriate treatment and follow-up of patients with celiac disease step by step and continuously.
PubMed: 38808324
DOI: 10.4103/abr.abr_247_21 -
BMC Pediatrics May 2024Celiac disease is one of the most common autoimmune disorders. This study aimed to evaluate the relationship between celiac disease and wheat sensitization.
INTRODUCTION AND AIM
Celiac disease is one of the most common autoimmune disorders. This study aimed to evaluate the relationship between celiac disease and wheat sensitization.
SUBJECTS AND METHODS
In the current study, children aged < 18 years with confirmed celiac disease were included. Data were analyzed using SPSS.
RESULTS
Gastrointestinal problems were the most common indication for evaluation in terms of celiac disease. Prick and patch tests were positive in 43.4% and 34% respectively.
CONCLUSION
Prick test and patch test for wheat sensitization were positive in about 30-45% of the children for celiac disease.
Topics: Humans; Celiac Disease; Child; Male; Female; Child, Preschool; Wheat Hypersensitivity; Patch Tests; Immunoglobulin E; Adolescent; Skin Tests; Triticum; Infant
PubMed: 38807087
DOI: 10.1186/s12887-024-04844-6 -
Diagnostic Microbiology and Infectious... Aug 2024Whipple's disease is a chronic systemic infectious disease that mainly affects the gastrointestinal tract. In some cases, Tropheryma whipplei can cause infection at the...
Whipple's disease is a chronic systemic infectious disease that mainly affects the gastrointestinal tract. In some cases, Tropheryma whipplei can cause infection at the implant site or even throughout the body. In this study, we collected alveolar lavage fluid samples from patients with Tropheryma whipplei from 2020 to 2022, and retrospectively analyzed the clinical data of Tropheryma whipplei positive patients. Patient's past history, clinical manifestations, laboratory examinations, chest CT findings, treatment, and prognosis were recorded. 16 BALFs (70/1725, 4.0 %) from 16 patients were positive for Tropheryma whipplei. 8 patients were male with an average age of 50 years. The main clinical symptoms of patients included fever (9/16), cough (7/16), dyspnea (7/16), and expectoration (5/16), but neurological symptoms and arthralgia were rare. Cardiovascular and cerebrovascular diseases were the most common comorbidity (n=8). The main laboratory characteristics of the patient are red blood cell count, hemoglobin, total protein and albumin below normal levels (11/16), and/or creatinine above normal levels(14/16). Most chest computed tomography mainly show focal or patchy heterogeneous infection (n=5) and pleural effusion (n=8). Among the 6 samples, Tropheryma whipplei was the sole agent, and Klebsiella pneumoniae was the most common detected other pathogens. Metagenomic next-generation sequencing technology has improved the detection rate and attention of Tropheryma whipplei. Further research is needed to distinguish whether Tropheryma whipplei present in respiratory samples is a pathogen or an innocent bystander.
Topics: Humans; Male; Middle Aged; Bronchoalveolar Lavage Fluid; Female; High-Throughput Nucleotide Sequencing; Tropheryma; Retrospective Studies; Whipple Disease; Metagenomics; Aged; Adult
PubMed: 38805857
DOI: 10.1016/j.diagmicrobio.2024.116374 -
Neurogastroenterology and Motility Jun 2024There is compelling evidence that microbe-host interactions in the intestinal tract underlie many human disorders, including disorders of gut-brain interactions... (Review)
Review
Critical appraisal of the SIBO hypothesis and breath testing: A clinical practice update endorsed by the European society of neurogastroenterology and motility (ESNM) and the American neurogastroenterology and motility society (ANMS).
BACKGROUND
There is compelling evidence that microbe-host interactions in the intestinal tract underlie many human disorders, including disorders of gut-brain interactions (previously termed functional bowel disorders), such as irritable bowel syndrome (IBS). Small intestinal bacterial overgrowth (SIBO) has been recognized for over a century in patients with predisposing conditions causing intestinal stasis, such as surgical alteration of the small bowel or chronic diseases, including scleroderma and is associated with diarrhea and signs of malabsorption. Over 20 years ago, it was hypothesized that increased numbers of small intestine bacteria might also account for symptoms in the absence of malabsorption in IBS and related disorders. This SIBO-IBS hypothesis stimulated significant research and helped focus the profession's attention on the importance of microbe-host interactions as a potential pathophysiological mechanism in IBS.
PURPOSE
However, after two decades, this hypothesis remains unproven. Moreover, it has led to serious unintended consequences, namely the widespread use of unreliable and unvalidated breath tests as a diagnostic test for SIBO and a resultant injudicious use of antibiotics. In this review, we examine why the SIBO hypothesis remains unproven and, given the unintended consequences, discuss why it is time to reject this hypothesis and its reliance on breath testing. We also examine recent IBS studies of bacterial communities in the GI tract, their composition and functions, and their interactions with the host. While these studies provide important insights to guide future research, they highlight the need for further mechanistic studies of microbe-host interactions in IBS patients before we can understand their possible role in diagnosis and treatment of patient with IBS and related disorders.
Topics: Humans; Breath Tests; Irritable Bowel Syndrome; Blind Loop Syndrome; Gastroenterology; Intestine, Small; Gastrointestinal Microbiome; Societies, Medical
PubMed: 38798120
DOI: 10.1111/nmo.14817 -
Nutrients May 2024Although parenteral nutrition (PN) significantly improves mortality rates in pediatric short bowel syndrome (SBS), long-term PN has many possible complications and...
BACKGROUND
Although parenteral nutrition (PN) significantly improves mortality rates in pediatric short bowel syndrome (SBS), long-term PN has many possible complications and impacts quality of life. Bowel lengthening procedures (BLPs) increase the contact surface of food and the intestinal mucosa and enable the better absorption of nutrients and liquids, possibly leading to a PN decrease.
METHODS
We retrospectively reviewed the data of patients with short bowel syndrome who underwent BLPs in the period from January 2016 to January 2022. Overall, eight patients, four male, five born prematurely, underwent BLPs.
RESULTS
There was a significant decrease in the percentage of total caloric intake provided via PN and PN volume after the BLPs. The more evident results were seen 6 months after the procedure and at the last follow-up, which was, on average, 31 months after the procedure. Two patients were weaned off PN after their BLPs. Patients remained well nourished during the follow-up.
CONCLUSIONS
The BLP led to a significant decrease in PN needs and an increase in the food intake; however, significant changes happened more than 6 months after the procedure.
Topics: Humans; Short Bowel Syndrome; Male; Female; Retrospective Studies; Parenteral Nutrition; Treatment Outcome; Infant; Child, Preschool; Child; Nutritional Status; Energy Intake; Digestive System Surgical Procedures; Quality of Life
PubMed: 38794694
DOI: 10.3390/nu16101456 -
Viruses Apr 2024Directed evolution is a pivotal strategy for new antibody discovery, which allowed the generation of high-affinity Fabs against gliadin from two antibody libraries in...
Directed evolution is a pivotal strategy for new antibody discovery, which allowed the generation of high-affinity Fabs against gliadin from two antibody libraries in our previous studies. One of the libraries was exclusively derived from celiac patients' mRNA (immune library) while the other was obtained through a protein engineering approach (semi-immune library). Recent advances in high-throughput DNA sequencing techniques are revolutionizing research across genomics, epigenomics, and transcriptomics. In the present work, an Oxford Nanopore in-lab sequencing device was used to comprehensively characterize the composition of the constructed libraries, both at the beginning and throughout the phage-mediated selection processes against gliadin. A customized analysis pipeline was used to select high-quality reads, annotate chain distribution, perform sequence analysis, and conduct statistical comparisons between the different selection rounds. Some immunological attributes of the most representative phage variants after the selection process were also determined. Sequencing results revealed the successful transfer of the celiac immune response features to the immune library and the antibodies derived from it, suggesting the crucial role of these features in guiding the selection of high-affinity recombinant Fabs against gliadin. In summary, high-throughput DNA sequencing has improved our understanding of the selection processes aimed at generating molecular binders against gliadin.
Topics: Gliadin; Humans; High-Throughput Nucleotide Sequencing; Nanopore Sequencing; Immunoglobulin Fab Fragments; Peptide Library; Celiac Disease; Cell Surface Display Techniques
PubMed: 38793567
DOI: 10.3390/v16050686 -
Helicobacter 2024Helicobacter pylori may be found during upper gastrointestinal endoscopy (UGE) performed to diagnose celiac disease (CeD), inflammatory bowel disease (IBD), and...
Helicobacter pylori infection found during upper endoscopy performed for the diagnosis of celiac, inflammatory bowel diseases, and eosinophilic esophagitis: A multicenter pediatric European study.
BACKGROUND
Helicobacter pylori may be found during upper gastrointestinal endoscopy (UGE) performed to diagnose celiac disease (CeD), inflammatory bowel disease (IBD), and eosinophilic esophagitis (EoE). We aimed to describe the frequency of H. pylori in children undergoing UGE for CeD, IBD, and EoE and the number of children receiving eradication treatment.
MATERIALS AND METHODS
A retrospective multicenter study from 14 countries included pediatric patients diagnosed with CeD, IBD, and EoE between January 2019 and December 2021.
DATA COLLECTED
age, gender, hematologic parameters, endoscopic, histologic, and H. pylori culture results, and information on eradication treatment.
RESULTS
H. pylori was identified in 349/3890 (9%) children [167 (48%) male, median 12 years (interquartile range 8.1-14.6)]. H. pylori was present in 10% (173/1733) CeD, 8.5% (110/1292) IBD and 7.6% (66/865) EoE patients (p = NS). The prevalence differed significantly between Europe (Eastern 5.2% (28/536), Southern 3.8% (78/2032), Western 5.6% (28/513)) and the Middle East 26.6% (215/809) [odds ratio (OR) 7.96 95% confidence interval (CI) (6.31-10.1) p < 0.0001]. Eradication treatment was prescribed in 131/349 (37.5%) patients, 34.6% CeD, 35.8% IBD, and 56.1% EoE. Predictors for recommending treatment included erosions/ulcers [OR 6.45 95% CI 3.62-11.47, p < 0.0001] and nodular gastritis [OR 2.25 95% CI 1.33-3.81, p 0.003]. Treatment rates were higher in centers with a low H. pylori prevalence (<20%) [OR 3.36 95% CI 1.47-7.66 p 0.004].
CONCLUSIONS
Identifying H. pylori incidentally during UGE performed for the most common gastrointestinal diseases varies significantly among regions but not among diseases. The indications for recommending treatment are not well defined, and less than 40% of children received treatment.
Topics: Humans; Helicobacter Infections; Male; Female; Child; Retrospective Studies; Eosinophilic Esophagitis; Adolescent; Inflammatory Bowel Diseases; Helicobacter pylori; Celiac Disease; Europe; Prevalence; Endoscopy, Gastrointestinal; Child, Preschool
PubMed: 38790089
DOI: 10.1111/hel.13092