Search results for "Feces"
showing 10 items of 313 documents
Spent Coffee Grounds Extract, Rich in Mannooligosaccharides, Promotes a Healthier Gut Microbial Community in a Dose-Dependent Manner.
2019
Coffee is one of the most consumed beverages around the world, and as a consequence, spent coffee grounds are a massively produced residue that is causing environmental problems. Reusing them is a major focus of interest presently. We extracted mannooligosaccharides (MOS) from spent coffee grounds and submitted them to an in vitro fermentation with human feces. Results obtained suggest that MOS are able to exert a prebiotic effect on gut microbiota by stimulating the growth of some beneficial genera, such as Barnesiella, Odoribacter, Coprococcus, Butyricicoccus, Intestinimonas, Pseudoflavonifractor, and Veillonella. Moreover, short-chain fatty acids (SCFA) production also increased in a dos…
Baseline Gut Microbiota Composition Is Associated With Schistosoma mansoni Infection Burden in Rodent Models
2020
In spite of growing evidence supporting the occurrence of complex interactions between Schistosoma and gut bacteria in mice and humans, no data is yet available on whether worm-mediated changes in microbiota composition are dependent on the baseline gut microbial profile of the vertebrate host. In addition, the impact of such changes on the susceptibility to, and pathophysiology of, schistosomiasis remains largely unexplored. In this study, mice colonized with gut microbial populations from a human donor (HMA mice), as well as microbiota-wild type (WT) animals, were infected with Schistosoma mansoni, and alterations of their gut microbial profiles at 50 days post-infection were compared to …
Description of an improved method for Blastocystis hominis culture and axenization
1996
An improved method for Blastocystis hominis culture and axenization was developed in the present study. Stool samples were cultured in prereduced Boeck-Drbohlav NHI modified medium (with several modifications) supplemented with antibiotics (0.4% ampicillin, 0.1% streptomycin, 0.0006% amphotericin B). Axenization was performed by the combination of partial purification of B. hominis by Ficoll-metrizoic acid gradient and inoculation in fresh medium containing active antibiotics against remaining bacteria. A total of 25 strains were obtained by this procedure. The time required for axenization ranged between 3 and 5 weeks. The generation time of axenic strains ranged from 6.6 to 12.1 h (mean +…
711 Pancreatic Exocrine Function in Allergic Children
2010
Background and aims: The concentration of human pancreatic elastase1 in faeces reflects exocrine pancreatic function. Patients with allergy may have damaged intestinal mucosa or inflammation within the duodenal mucosa that could be associated with pancreatic dysfunction and disturbed digestion of allergens (that are mainly of protein origin). The aim of the study was to compare pancreatic function in allergic patients and children without allergy. Methods: The total patient sample consisted of 109 children, aged 1-10 yrs (mean age 5.2): 49 children were having allergy while 60 were healthy children or children with minor health problems. Faecal samples were gathered and the activity of huma…
Structural alterations of faecal and mucosa-associated bacterial communities in irritable bowel syndrome
2012
Summary Irritable bowel syndrome (IBS) is the most common functional gastrointestinal disorder in western coun- tries. Previous studies on IBS, mostly based on faecal samples, suggest alterations in the intestinal micro- biota. However, no consensus has been reached regarding the association between specific bacteria and IBS. We explore the alterations of intestinal bac- terial communities in IBS using massive sequencing of amplified 16S rRNA genes. Mucosal biopsies of the ascending and descending colon and faeces from 16 IBS patients and 9 healthy controls were analysed. Strong inter-individual variation was observed in the composition of the bacterial communities in both patients and cont…
Sequential evolution of genotype GII.4 norovirus variants causing gastroenteritis outbreaks from 2001 to 2006 in Eastern Spain.
2008
Noroviruses are the most common cause of outbreaks of viral gastroenteritis worldwide. Norovirus outbreaks were surveyed in Catalonia and the region of Valencia (Eastern Spain) between January 2001 and December 2006 as part of the European Union funded network "Food-borne viruses in Europe". During this time the etiology and epidemiological features of 194 outbreaks of acute non-bacterial gastroenteritis were investigated and norovirus was identified as causing 169 (87.1%) of them. Molecular epidemiology of viral strains was studied by RT-PCR and sequencing part of the RNA polymerase gene in ORF1 from 153 outbreak strains. The most commonly identified norovirus genotype was GII.4 (71.9% of …
931 Intestinal Parasites in Internationally Adopted Children in Belgium
2012
Background and Aims 314 internationally adopted children were seen between 01/01/2008 and 31/03/2012 at the Institute of Tropical Medicine in Antwerp (Belgium). We describe the prevalence of pathogenic intestinal parasites in this population. Methods Retrospective analysis of patient records. Feces samples were obtained in 307/314 children. In addition, serology for Strongyloides and Schistosoma was performed. Results Pathogenic parasites were found in 55.7% (53% in children 0–5 years, 72.1% > 5years). When counting any parasites, 65.9% of children were found positive (61.4% for 0–5 years, 93% for >5 years). 37.5% of children with positive samples had ≥ 3 parasites. Analysis by age in child…
Epidemiology of foodborne Norovirus outbreaks in Catalonia, Spain
2008
Abstract Background Noroviruses are one of the principal biological agents associated with the consumption of contaminated food. The objective of this study was to analyse the size and epidemiological characteristics of foodborne outbreaks of gastroenteritis in Catalonia, a region in the northeast of Spain. Methods In all reported outbreaks of gastroenteritis associated with food consumption, faecal samples of persons affected were analysed for bacteria and viruses and selectively for parasites. Study variables included the setting, the number of people exposed, age, sex, clinical signs and hospital admissions. The study was carried out from October 2004 to October 2005. Results Of the 181 …
Use of Calprest ® in the diagnosis of Inflammatory Bowel Disease (IBD)
2002
Abstract Background: Between November 2000 and February 2001 a study has been performed by eight Italian hospital centers with the aim of verifying the usefulness of Calprest® (detection of fecal calprotectin) as a marker of bowel inflammation. Preliminary data are reported. Objective: To define the use of fecal calprotectin as a marker of intestinal inflammation, to assess whether it might help in differentiating between IBS and IBD, and its role in IBD. Subjects: Healthy population (51), active Crohn (16), non active or under remission Crohn (11), active ulcerative Colitis (8), non active or under remission ulcerative Colitis (13), pathological Controls of various nature (79). Results: Th…