Helicobacter pylori
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA100159 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Array CGH of human H. pylori isolates from natrually infected Mexican patients and BCS-100 strain used for experimental infection of humans which is labeled as OVX-34 in this sample set(Graham et al., 2004, Gut, 53:1235-1243). Each Mexican isolate has a three digit number indicating the patient, a letter indicating biopsy site location and number indicating single colony clone number. Patient 249,259 and 251 are adults and patient 291,293,612 and 653 are children. Multiple single clonies were isolated from 2-4 gastric biopsy sites (a- antrum, c-corpus, f- fundus, i-incisura angularis). Genomic DNA prepared from each experimental strain (500 ng) was labeled with Cy5 (red channel) and co-hybridized with an equimolar mixture of genomic DNA from the reference strains 26659 and J99 (500 ng).
2007-05-11 | E-SMDB-3981 | biostudies-arrayexpress
Project description:Array CGH of human H. pylori isolates from natrually infected Mexican patients and BCS-100 strain used for experimental infection of humans which is labeled as OVX-34 in this sample set(Graham et al., 2004, Gut, 53:1235-1243). Each Mexican isolate has a three digit number indicating the patient, a letter indicating biopsy site location and number indicating single colony clone number. Patient 249,259 and 251 are adults and patient 291,293,612 and 653 are children. Multiple single clonies were isolated from 2-4 gastric biopsy sites (a- antrum, c-corpus, f- fundus, i-incisura angularis). Genomic DNA prepared from each experimental strain (500 ng) was labeled with Cy5 (red channel) and co-hybridized with an equimolar mixture of genomic DNA from the reference strains 26659 and J99 (500 ng). Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Keywords: Logical Set
2007-08-09 | GSE7618 | GEO
Project description:Helicobacter pylori clinical isolates can establish themselves in gastric epithelial stem cells and this interaction may have implications for gastric tumorigenesis. Mouse gastric epithelial progenitor cells (mGEPs) were infected for 24hrs with Helicobacter pylori clinical isolates Kx1 and Kx2. Kx1 and Kx2 were also grown in cell media in the absence of cells. Kx1 was isolated from a patient with chronic atrophic gastritis (ChAG) and Kx2 from the same patient 4 years later, when he progressed to gastric adenocarcinoma. Keywords: RNA Expression Array
2008-02-22 | GSE10261 | GEO
Project description:Helicobacter pylori clinical isolates can establish themselves in gastric epithelial stem cells and this interaction may have implications for gastric tumorigenesis. Mouse gastric epithelial progenitor cells (mGEPs) and non-progenitor gastric epithelial cells (npGECs) were infected for 24hrs with Helicobacter pylori clinical isolates Kx1 and Kx2. Kx1 was isolated from a patient with chronic atrophic gastritis (ChAG) and Kx2 from the same patient 4 years later, when he progressed to gastric adenocarcinoma. Keywords: RNA Expression Array
2008-02-22 | GSE10262 | GEO
Project description:Array CGH of human H. pylori isolates from natrually infected Mexican patients and BCS-100 strain used for experimental infection of humans which is labeled as OVX-34 in this sample set(Graham et al., 2004, Gut, 53:1235-1243). Each Mexican isolate has a three digit number indicating the patient, a letter indicating biopsy site location and number indicating single colony clone number. Patient 249,259 and 251 are adults and patient 291,293,612 and 653 are children. Multiple single clonies were isolated from 2-4 gastric biopsy sites (a- antrum, c-corpus, f- fundus, i-incisura angularis). Genomic DNA prepared from each experimental strain (500 ng) was labeled with Cy5 (red channel) and co-hybridized with an equimolar mixture of genomic DNA from the reference strains 26659 and J99 (500 ng). Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Keywords: Logical Set Computed
2007-08-08 | E-GEOD-7618 | biostudies-arrayexpress
Project description:Array CGH of Mexican patient strains from Javier Torres laboratory analyzed by Carolina Romo. Patients have a range of pathologies form gastritis to ulcer to cancer. Multiple strains were isolated from each patient and all those giving distinct RAPD patterns were profiled against a reference sample of 26695/J99 genomic DNA. For each array 0.25-1 micrograms of genomic DNA of a test strains was labeled with Cy5 and 0.5 micrograms of an equimolar mix of 26695 and J99 genomic DNA was labeled with Cy3. A clinical history design type is where the organisms clinical history of diagnosis, treatments, e.g. vaccinations, surgery etc. Individual: Patient from whom the strain was isolated (#) Disease State: Disease of patient from whom the strain was isolated Replicate: strain isolate (within patient) (#) Keywords: clinical_history_design
2009-09-25 | GSE12932 | GEO
Project description:USU101 gene content determined by array CGH
| PRJNA258371 | ENA
Project description:Helicobacter pylori colonizes the stomach of half of the world's population, causing a wide spectrum of disease ranging from asymptomatic gastritis to ulcers to gastric cancer. Although the basis for these diverse clinical outcomes is not understood, more severe disease is associated with strains harboring a pathogenicity island. To characterize the genetic diversity of more and less virulent strains, we examined the genomic content of 15 H. pylori clinical isolates by using a whole genome H. pylori DNA microarray. We found that a full 22% of H. pylori genes are dispensable in one or more strains, thus defining a minimal functional core of 1281 H. pylori genes. While the core genes encode most metabolic and cellular processes, the strain-specific genes include genes unique to H. pylori, restriction modification genes, transposases, and genes encoding cell surface proteins, which may aid the bacteria under specific circumstances during their long-term infection of genetically diverse hosts. We observed distinct patterns of the strain-specific gene distribution along the chromosome, which may result from different mechanisms of gene acquisition and loss. Among the strain-specific genes, we have found a class of candidate virulence genes identified by their coinheritance with the pathogenicity island. Keywords: other
2001-07-25 | GSE6 | GEO