Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gene expression profiling of aortic media after long-term treatment with an angiotensin II-receptor blocker, Losartan

ABSTRACT: Rats (Wag/Rij, females) were chronically treated with Losartan (20mg/d), an angiotensin II-receptor blocker during 9 months. Gene expression profiling was performed on aortic media to understand the long-term effect of this molecule on the cardiovascular system. Two-conditions experiment, Ctrl vs Losartan-treated animals. Biological replicates: 5 control replicates, 5 Losrtan-treated animals. All the RNA samples were pooled to provide a reference RNA for a two-color experiment.

ORGANISM(S): Rattus norvegicus

SUBMITTER: Sophie Nadaud

PROVIDER: E-GEOD-18298 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Gene expression profiling of human mammary artery media during aging

Project description:Our goal was to better understand the genes and pathways implicated during arterial media aging. We therefore compared the gene expression profile of human mammary artery media between Young (<60, 8 patients) and old (>75, 7 patients) patients. The microarray data, generated using the Illumina sentrix Ref8-V2 platform, was normalized and analyzed using the IlluminaGUI package (Eggle and Schultze, 2007). We used 8 samples from the "Young" groups and 7 samples from the "old" group. No technical replicates were used.

2010-12-07 | E-GEOD-16487 | biostudies-arrayexpress

Response of muscle to stress

Project description:As muscle function is relevant for the stress response, and as gene array and proteomics analyses have not been conducted to investigate muscle response in stress paradigm in birds, we developed generic approaches to assess molecular bases of muscle response to stress in chicken. Restraint test was chosen as stress situation because this treatment has previously been shown to be a high stressful situation in birds and mammals. Keywords: comparative genomic expression, skeletal muscle, restraint-transport stress, chicken 5 samples

2010-06-05 | E-GEOD-19644 | biostudies-arrayexpress

Fuzzy Logic Selection as a New Reliable Tool to Identify Gene Signatures in Breast Cancer - the INNODIAG Study

Project description:Based on fuzzy logic selection and classification algorithms, our selection method measures the contribution of each gene for each of two pre-defined classes in order to find the best discrimination. This algorithm extracts and ranks the most pertinent markers, since it is based on feature weighting according to optimal error rate, sensitivity and specificity. We applied the fuzzy logic selection on four breast cancer microarray databases to obtain new gene signatures based on histological grade. To validate these gene signatures, we designed probes for the selected genes on Nimblegen custom microarrays and tested them on a series of 151 consecutive invasive breast carcinomas displaying clinicopathological features similar to those observed in routine practice. 151 frozen breast cancer tumors from the tumor bank of the Claudius Regaud Institute (ICR Toulouse, France) were selected. This cohort consisted of consecutive invasive breast carcinoma patients treated at Claudius Regaud Institute between 2009 and 2011. All patients included in this cohort signed an informed consent. Clinico-pathological characteristics of the series were similar to those observed in routine clinical practice (i.e. majority of pre-menopausal patients presenting with T1c, node negative, ER+ invasive ductal carcinoma of intermediate grade).

2014-01-12 | E-GEOD-53958 | biostudies-arrayexpress

Transcription profiling of thymus from myasthenia gravis patients

Project description:Identification of deregulated genes in the thymus of myasthenia gravis patients' subgroup.

2006-11-09 | E-MEXP-518 | biostudies-arrayexpress

Hematopietic system high resolution transcriptome

Project description:Recent advances in high density oligonucleotides microarray technology have generated solutions for molecular profiling of human samples at an unprecedented resolution. We mapped whole blood RNA from healthy volunteers and CD34+ collected by cytapheresis from patients to Exon ST 1.0 microarray probing for most known and predicted human exons. Comparison with a broad panel of solid tissues showed that blood displayed the largest tissue specific signature. This unique expression profile comprised transcripts from every blood cell compartment. Moreover, by scanning the expression of over one million different exons, several transcripts were identified as alternatively transcribed between whole blood and solid tissues, or CD34+ and other tissues. The precision of this expression map, at the exon resolution, and the coverage of every blood cell type and hematopoietic stem cells suggest that it will be possible to link specific whole blood exon signatures to many diseases such as cancer or auto-immune disorders and to discover alternative splicing events specific of mature blood cells or stem cells compartment. 4 samples of whole blood from adult healthy donors and 3 samples of CD34+ cells obtained by selection after cytapheresis.

2010-04-08 | E-GEOD-10480 | biostudies-arrayexpress

Expression profiling by array of 44 adrenocortical carcinomas

Project description:Gene expression profiles of adrenocortical carcinomas were analyzed using Affymetrix Human Gene 2.0 ST Array to identify homogeneous molecular subgroups Gene expression profiles of 44 adrenocortical carcinomas were hybridized using Affymetrix Human Gene 2.0 ST Array

2014-04-29 | E-GEOD-49278 | biostudies-arrayexpress

Angiotensin receptor blockade attenuates cigarette smoke-induced lung injury and rescues lung architecture in a murine model

Project description:TGFβ inhibition attenuates chronic cigarette smoke induced lung injury and rescues lung architecture. AKR/J mice were exposed to Cigarette Smoke (CS) for a period of two months. Some animals received a treatment of Losartan (.6gr/L) orally while exposed (CS Los). These two groups are to be compared to animals that remained in Room Air (RA) and Room Air plus Losartan(0.6g/L) (RA Los) for any changes.

2011-12-30 | E-GEOD-33561 | biostudies-arrayexpress

Modified Vaccinia virus Ankara vector induces specific cellular and humoral responses in the female reproductive tract, the main HIV portal of entry

Project description:The female reproductive tract is one of the major mucosal invasion site of HIV-1. This site has been neglected in previous HIV-1 vaccine studies. Immune responses in the female reproductive tract after systemic vaccination remain to be characterized. Using a modified vaccinia virus Ankara (MVA) as a vaccine model, we characterized specific immune responses in all compartments of the female reproductive tract (FRT) of non-human primates after systemic vaccination. Memory T cells were preferentially found in the lower tract (vagina and cervix), whereas antigen-presenting cells and innate lymphoid cells were mainly located in the upper tract (uterus and fallopian tubes). This compartmentalisation of immune cells in the FRT was supported by transcriptomic analyses and correlation network. Polyfunctional MVA-specific CD8+ T cells were detected in the blood, lymph nodes, vagina, cervix, uterus and fallopian tubes. Anti-MVA IgG and IgA were detected in cervicovaginal fluid after a second vaccine dose. Systemic vaccination with an MVA vector thus elicits cellular and antibody responses in the female reproductive tract.

2017-06-09 | E-MTAB-5663 | biostudies-arrayexpress

Seminal plasma exposures strengthen vaccine responses in the female reproductive tract mucosae

Project description:HIV-1 sexual transmission occurs mainly via mucosal semen exposures. In the female reproductive tract (FRT), seminal plasma (SP) induces physiological modifications, including inflammation. An effective HIV-1 vaccine should elicit mucosal immunity. However, modifications of vaccine responses by the local environment remain to be characterized. Using a modified vaccinia virus Ankara (MVA) as a vaccine model, we characterized the impact of HIV-1+ SP intravaginal exposure on the local immune responses of nonhuman primates. Multiple HIV-1+ SP exposures did not impact the anti-MVA antibody responses. However, SP exposures revealed an anti-MVA responses mediated by CD4+ T cells, which was not observed in the control group. Multi-parameter approaches clearly identified the cervix as the most impacted compartment in the FRT. The frequency and the quality of specific anti-MVA CD8+ T cell responses increased in the FRT exposed to SP. Furthermore SP exposures induced a local cell recruitment of antigen presenting cells, especially CD11c+ cells and CD8+ T cell recruitment in the FRT draining lymph nodes. CD11c+ cell recruitment was associated with upregulation of inflammation-related gene expression after SP exposures in the cervix. We thus highlight the fact that physiological conditions, such as SP exposures, should be taken into consideration to test and to improve vaccine efficacy against HIV-1 and other sexually transmitted infections.

2019-02-12 | E-MTAB-7639 | biostudies-arrayexpress

Myocardial Gene Expression Profiling to Predict and Identify Cardiac Allograft Acute Cellular Rejection

Project description:Aims. Serial invasive endomyocardial biopsies (EMB) remain the gold standard for acute cellular rejection (ACR) diagnosis. However histological grading has several limitations. We aimed to explore the value of myocardial Gene Expression Profiling (GEP) for diagnosing and identifying predictive biomarkers of ACR. Methods. A case-control study nested within a retrospective heart transplant patients cohort included 126 patients with median (IQR) age 50 (41-57) years and 111 (88%) males. Among 1157 EMB performed, 467 were eligible (i.e, corresponding to either ISHLT grade 0 or â¥3A), among which 36 were selected for GEP according to the grading: 0 (CISHLT, n= 13); rejection â¥3A (RISHLT, n=13); 0 one month before ACR (BRISHLT, n=10). Results. We found 294 genes differentially expressed between CISHLT and RISHLT, mainly involved in immune activation, and inflammation. Hierarchical clustering showed a clear segregation of CISHLT and RISHLT groups and heterogeneity of GEP within RISHLT. All EMB presented immune activation, but some RISHLT EMB were strongly subject to inflammation, whereas others, closer to CISHLT, were characterized by structural modifications with lower inflammation level. We identified 15 probes significantly different between BRISHLT and CISHLT, including the gene of the muscular protein TTN. This result suggests that structural alterations precede inflammation in ACR. Linear Discriminant Analysis based on these 15 probes was able to identify the histological status of every 36 samples. Conclusion. Myocardial GEP is a helpful method to accurately diagnose ACR, and predicts rejection one month before its histological occurrence. These results should be considered in cardiac allograft recipientsâ care.

2017-03-07 | E-MTAB-5136 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data