Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA102873 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Normal human colorectal mucosa was sampled at points along the colon. Experiment Overall Design: Normal human colorectal mucosa, cecum, ascending, transverse, sigmoid and rectum
2008-06-16 | E-GEOD-9254 | biostudies-arrayexpress
Project description:We applied numerical ecology methods to data produced with a human intestinal tract-specific phylogenetic microarray (the Aus-HIT Chip) to examine the biogeography of mucosa-associated bacteria along the human colon. The microbial DNA associated with matched biopsy tissue samples taken from the cecum, transverse colon, sigmoid colon and rectum of 10 healthy patients was examined. Consistent with previous studies, the profiles revealed a marked inter-subject variability; however, the numerical ecology methods of analysis allowed the subtraction of the subject effect from the data and revealed, for the first time, evidence of a longitudinal gradient for specific microbes along the colorectum: with Streptococcus, Comamonadaceae, Enterococcus and Lactobacillus in greatest abundance at the cecum, with a gradual decline in their relative abundance through to the rectum. Conversely, the analyses suggest that members of the Enterobacteriaceae increase in relative abundance towards the rectum. These differences were validated by quantitative PCR. We were also able to identify significant differences in the profiles, especially for the Streptococci, on the basis of gender. The results derived by these multivariate analyses are biologically intuitive, and suggestive that the biogeography of the colonic mucosa can be monitored for changes via cross-sectional and/or inception cohort studies. 10 patients, 5 males and 5 females. Four different locations along the colorectum.
2010-05-07 | E-GEOD-18933 | biostudies-arrayexpress
Project description:We applied numerical ecology methods to data produced with a human intestinal tract-specific phylogenetic microarray (the Aus-HIT Chip) to examine the biogeography of mucosa-associated bacteria along the human colon. The microbial DNA associated with matched biopsy tissue samples taken from the cecum, transverse colon, sigmoid colon and rectum of 10 healthy patients was examined. Consistent with previous studies, the profiles revealed a marked inter-subject variability; however, the numerical ecology methods of analysis allowed the subtraction of the subject effect from the data and revealed, for the first time, evidence of a longitudinal gradient for specific microbes along the colorectum: with Streptococcus, Comamonadaceae, Enterococcus and Lactobacillus in greatest abundance at the cecum, with a gradual decline in their relative abundance through to the rectum. Conversely, the analyses suggest that members of the Enterobacteriaceae increase in relative abundance towards the rectum. These differences were validated by quantitative PCR. We were also able to identify significant differences in the profiles, especially for the Streptococci, on the basis of gender. The results derived by these multivariate analyses are biologically intuitive, and suggestive that the biogeography of the colonic mucosa can be monitored for changes via cross-sectional and/or inception cohort studies.
2010-03-01 | GSE18933 | GEO
Project description:Helminth infection may have the potential to suppress intestinal inflammation in inflammatory bowel diseases. Ulcerative colitis is more common in developed countries than in developing countries endemic for helminth infections. There are animal models, as well as clinical trials, suggesting therapeutic effects of experimental helminth infection. Here, we provide a comprehensive molecular portrait of dynamic changes in the intestinal mucosa of an individual who infected himself with Trichuris trichiura to treat his symptoms of ulcerative colitis. Genes involved in carbohydrate and lipid metabolism were upregulated in helminth-colonized tissue, while tissues with active colitis showed upregulation of proinflammatory genes such as IL-17, IL13RA2, and CHI3L1. T. trichiura colonization of the intestine may reduce symptomatic colitis by promoting goblet cell hyperplasia and mucus production through TH2 cytokines and IL-22. By better understanding the physiological effects of helminth infection, new therapies for ulcerative colitis could be identified. This is the first (out of three) series of arrays from this patient from a colonoscopy in 2007 when the patient had mild proctitis in the rectum and worms in the ascending and transverse colon. We analyzed 14 HEEBO arrays on which were hybridized RNA amplified from pinch biopsies collected from different regions of the colon. 3 samples were from the ascending colon, which was colonized by worms at the time. 2 samples were from the transverse colon, which was also colonized by worms at the time. 4 samples were from the sigmoid colon, which appeared normal at the time. 3 samples were from the rectum, which showed signs of proctitis and was inflamed at the time. 2 samples were from the terminal ileum, which was unaffected by worms or colitis.
2010-11-20 | E-GEOD-25275 | biostudies-arrayexpress
Project description:DNA of 124 normal mucosa biopsies from cecum (proximal) and sigmoid (distal) colon obtained at baseline (t1) and after 10years (t2) from 31 screening females was subjected to measure DNA methylation profiles by Illumina Infinium EPIC Human Methylation BeadChip across approximately 850,000 CpGs.
2020-11-09 | GSE142257 | GEO
Project description:The aim of the project is to generate a peptidomics map of gut hormone peptides along the gastrointestinal tract, starting with the stomach and including the duodenum, jejunum, ileum, ascending colon, sigmoid colon and rectum. The tissues would be collected after surgery and the peptide fraction extracted and anlysed by nano LC-MS to identify what peptide hormones are present. These data will then be used to compare against the human transcriptome, and also for comparison against equivent peptides from murine intestinal extracts.
2019-02-15 | PXD009788 | Pride
Project description:Mucosal pinch biopsies from ascending, transverse, descending colon and rectum were obtained from ulcerative colitis (UC) and primary sclerosing cholangitis concomitant with colitis (PSC-UC) patients during routine endoscopies and subjected to 5' single-cell RNA sequencing
2026-06-17 | E-MTAB-14955 | biostudies-arrayexpress
Project description:Mucosal pinch biopsies from ascending, transverse, descending colon and rectum were obtained from ulcerative colitis (UC) and primary sclerosing cholangitis concomitant with colitis (PSC-UC) patients during routine endoscopies and subjected to 5' single-cell RNA sequencing with V(D)J TCR analysis
2026-06-17 | E-MTAB-14899 | biostudies-arrayexpress
Project description:Mucosal pinch biopsies from ascending, transverse, descending colon and rectum were obtained from ulcerative colitis (UC) and primary sclerosing cholangitis concomitant with colitis (PSC-UC) patients during routine endoscopies and subjected to 5' single-cell RNA sequencing with V(D)J BCR analysis
2026-06-17 | E-MTAB-14901 | biostudies-arrayexpress
Project description:We sequenced 12 samples from 6 healthy women. 3 women were below 30 years of age, and the other 3 were above 70 years. For each woman, both the cecum and the sigmoid section of the colon were sequenced. The objective was to differentiate age from tumor associated hypermethylation (from a related dataset), in order to identify tumor-associated differentially methylated regions that do not change upon ageing of normal colonic mucosa.
2020-12-04 | E-MTAB-9665 | biostudies-arrayexpress