Objective: We hypothesized that type 1 diabetes (T1D) is accompanied by changes in gene expression in peripheral blood mononuclear cells (PBMCs) due to dysregulation of adaptive and innate immunity, counterregulatory responses to immune dysregulation, insulin deficiency and hyperglycemia. Research Design and Methods: Microarray analysis was performed on PBMCs from 43 patients with newly diagnosed T1D, 12 patients with newly diagnosed type 2 diabetes (T2D) and 24 healthy controls. One and four month follow-up samples were obtained from 20 of the T1D patients.
Gene expression in peripheral blood mononuclear cells from children with diabetes.
Sex, Age, Treatment, Race
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Inhibition of pyrimidine synthesis reverses viral virulence factor-mediated block of mRNA nuclear export.
Specimen part, Cell line
View SamplesAnalysis of cellular response to DHODH inhibition at gene expression and nuclear/cytoplasmic distribution level.
Inhibition of pyrimidine synthesis reverses viral virulence factor-mediated block of mRNA nuclear export.
Specimen part
View SamplesAnalysis of cellular response to DHODH inhibition at gene expression and nuclear/cytoplasmic distribution level.
Inhibition of pyrimidine synthesis reverses viral virulence factor-mediated block of mRNA nuclear export.
Specimen part
View SamplesAnalysis of cellular response to DHODH inhibition at gene expression and nuclear/cytoplasmic distribution level.
Inhibition of pyrimidine synthesis reverses viral virulence factor-mediated block of mRNA nuclear export.
Specimen part
View SamplesTranscriptional analysis of the effects of the deletion of the sRNAs glmY and glmZ in EHEC
Global analysis of posttranscriptional regulation by GlmY and GlmZ in enterohemorrhagic Escherichia coli O157:H7.
No sample metadata fields
View SamplesWnt9b is expressed in the ureteric bud of the kidney at all stages of development. In Wnt9b mutants, the ureteric bud forms but the metanephric mesenchyme is never induced to undergo differentiation.
Myc cooperates with β-catenin to drive gene expression in nephron progenitor cells.
Specimen part
View SamplesWnt9b is expressed in the ureteric bud of the kidney at all stages of development. The Wnt9b cneo allele functions as a partial loss of function. Wnt9bcneo/cneo mutant kidneys initially develop normally but exhaust their nephron progenitor cells by E15.5. Here, we have compared expression between Wnt9bcneo/+ and Wnt9bcneo/cneo kidneys. Additional urogenital tissue (adrenal glands, reproductive tracts and bladder) may have been included in some samples.
No associated publication
Specimen part
View SamplesThe host response in critically ill patients with sepsis, septic shock remains poorly defined. Considerable research has been conducted to accurately distinguish patients with sepsis from those with non-infectious causes of disease. Technological innovations have positioned systems biology at the forefront of biomarker discovery. Analysis of the whole-blood leukocyte transcriptome enables the assessment of thousands of molecular signals beyond simply measuring several proteins in plasma, which for use as biomarkers is important since combinations of biomarkers likely provide more diagnostic accuracy than the measurement of single ones or a few. Evidence suggests that genome-wide transcriptional profiling of blood leukocytes can assist in differentiating between infection and non-infectious causes of severe disease. Of importance, RNA biomarkers have the potential advantage that they can be measured reliably in rapid quantitative reverse transcriptase polymerase chain reaction (qRT-PCR)-based point of care tests.
A molecular biomarker to diagnose community-acquired pneumonia on intensive care unit admission.
Sex, Age
View SamplesPurpose: Severe late normal tissue damage limits radiotherapy treatment regimens. This study aims to validate -H2AX foci decay ratios and induced expression levels of DNA double strand break (DSB) repair genes, found in a retrospective study, as possible predictors for late radiation toxicity. Methods and Materials: Prospectively, decay ratios (initial/residual -H2AX foci numbers) and genome-wide expression profiles were examined in ex vivo irradiated lymphocytes of 198 prostate cancer patients. All patients were followed 2 years after radiotherapy, clinical characteristics were assembled and toxicity was recorded using the Common Terminology Criteria (CTCAE) v4.0. Results: No clinical factors were correlated with late radiation toxicity. Analysis of -H2AX foci uncovered a negative correlation between the foci decay ratio and toxicity grade. Significantly smaller decay ratios were found in grade3 compared to grade 0 patients (p=0.02), indicating less efficient DNA-DSB repair in radio-sensitive patients. Moreover, utilizing a foci decay ratio threshold determined in our previous retrospective study correctly classified 23 of the 28 grade3 patients (sensitivity, 82%) and 9 of the 14 grade 0 patients (specificity, 64%). Grade of toxicity also correlated with a reduced induction of the homologous recombination (HR) repair gene-set. The difference in average fold induction of the HR gene-set was most pronounced between grade 0 and grade3 patients (p=0.008). Conclusions: Reduced responsiveness of HR repair genes to irradiation and inefficient DSB repair correlate with an increased risk of late radiation toxicity. Using a decay ratio classifier, we could correctly classify 82% of the patients with grade3 toxicity. Additional studies are required to further optimize and validate the foci decay assay and to assess its predictive value for late radiation toxicity in patients prostate cancer
Prostate Cancer Patients with Late Radiation Toxicity Exhibit Reduced Expression of Genes Involved in DNA Double-Strand Break Repair and Homologous Recombination.
Specimen part, Subject
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