Synovial fibroblasts of 6 RA patients were treated with IL1 or PDGF-D. The aim of this study was to outline mechanism of the disease RA by a treatment with one of these cytokines.
Novel application of multi-stimuli network inference to synovial fibroblasts of rheumatoid arthritis patients.
Treatment, Subject, Time
View SamplesDiscrimination of rheumatoid arthritis (RA) patients from patients with other inflammatory/degenerative joint diseases or healthy individuals purely on the basis of genes differentially expressed in high-throughput data has proven very difficult. Thus, the present study sought to achieve such discrimination by employing a novel unbiased approach using rule-based classifiers. Three multi-center genome-wide transcriptomic data sets (Affymetrix HG- U133 A/B) from a total of 79 individuals, including 20 healthy controls (control group - CG), as well as 26 osteoarthritis (OA) and 33 RA patients, were used to infer rule- based classifiers to discriminate the disease groups. The rules were ranked with respect to Kiendls statistical relevance index, and the resulting rule set was optimized by pruning. The rule sets were inferred separately from data of one of three centers and applied to the two remaining centers for validation. All rules from the optimized rule sets of all centers were used to analyze their biological relevance applying the software Pathway Studio.
Identification of rheumatoid arthritis and osteoarthritis patients by transcriptome-based rule set generation.
Sex, Age
View SamplesBackground: Elevated plasma cholesterol promotes the formation of atherosclerotic lesions in which monocyte-derived lipid-laden macrophages are frequently found. To analyze, if circulating monocytes already show increased lipid content and differences in lipoprotein metabolism, we compared monocytes from patients with Familial Hypercholesterolemia (FH) with those from healthy individuals.
Monocytes of patients with familial hypercholesterolemia show alterations in cholesterol metabolism.
Specimen part, Disease, Disease stage
View SamplesAtherosclerosis is the major cause of death in industrialized countries. This disease has initially been characterized as a lipid disorder, but current concepts argue for an inflammatory disease, which develops in the background of hypercholesterolemia and other risk factors. In response to initial events of atherosclerosis formation, such as LDL-deposition in the subendothelial space, monocytes and T cells interact with the vessel wall. However, little is known about the properties and the behavior of these cells in this context. Using familial hypercholesterolemia (FH) as a model we demonstrate substantial differences in the gene expression of freshly isolated human monocytes and T lymphocytes. In FH monocytes we found an increased uptake of oxidized LDL, elevated amounts of scavenger receptors and adhesion molecules, and differences in the regulation of intracellular lipoprotein metabolism compared to monocytes from healthy individuals. Furthermore, the monocyte subpopulation of CD14+/CD16+ cells is less frequent in FH but exhibits significantly higher levels of CD11c and CD29 which increases the likelihood for their transmigration through the endothelial layer. The presence of increased amounts of CD69 in T lymphocytes from FH patients suggests that these cells are more activated than control cells. Our results indicate that some important steps of atherosclerosis formation already take place in circulating blood cells which extends current atherosclerosis models to the plasma compartment.
No associated publication
Specimen part, Disease, Disease stage
View SamplesWe systematically assessed the transcriptomic changes of circulating leukocytes from whole blood of mice that had undergone polymicrobial sepsis.
No associated publication
Specimen part, Treatment
View SamplesLow-dose epirubicin at non-cytotoxic doses down regulated NLRP3 inflammasome components and reduced the release of proinflammatory cytokines.
Transcriptional Suppression of the NLRP3 Inflammasome and Cytokine Release in Primary Macrophages by Low-Dose Anthracyclines.
Cell line
View SamplesCarnitine is a water soluble quaternary amine which is essential for normal function of all tissues.
Effect of L-carnitine on the hepatic transcript profile in piglets as animal model.
Sex, Age, Specimen part
View SamplesProducts derived from roots of Leuzea carthamoides DC. (maral root) are being promoted as anti-aging and adaptogenic. The phytoecdysteroids are considered as active principles with numerous beneficial effects, but little is known about the pharmacological properties of Leuzea extracts. We, therefore, investigated the effects of a lipophilic Leuzea root extract on ER+ breast cancer MCF-7 cells at transcriptional level in comparison to 17beta-estradiol and the ER antagonist tamoxifen. With the extract 241 genes were regulated more than 1.5 fold. We observed gene regulation in an anti-proliferative and pro-apoptotic manner.
Effects of Leuzea carthamoides on human breast adenocarcinoma MCF-7 cells determined by gene expression profiling and functional assays.
No sample metadata fields
View SamplesExtracts from the rhizome of Cimicifuga racemosa (black cohosh) are increasingly popular as herbal alternative to hormone replacement therapy (HRT) for the alleviation of postmenopausal disorders. However, the molecular mode of action and the active principles are presently not clear. Previously published data have been largely contradictory. We, therefore, investigated the effects of a lipophilic Cimicifuga rhizome extract on the ER+ breast cancer MCF-7 cells at transcriptional level in comparision to 17beta-estradiol and the ER antagonist tamoxifen. With the extract 431 genes were regulated more than 1.5 fold. The overall expression pattern differed from those of 17-estradiol or the estrogen receptor antagonist tamoxifen. We observed an enrichment of genes in an anti-proliferative and apoptosis-sensitizing manner, together with an increase of mRNAs coding for gene products involved in several stress response pathways. Regulated genes of these functional groups were highly overrepresented among all regulated genes. Various transcripts coding for oxidoreductases were induced, as for example the cytochrome P450 family members 1A1 and 1B1. In addition, some transcripts associated with antitumor but also tumor-promoting activity were regulated.
Gene expression profiling reveals effects of Cimicifuga racemosa (L.) NUTT. (black cohosh) on the estrogen receptor positive human breast cancer cell line MCF-7.
No sample metadata fields
View Samples