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Gene expression profile of idiopathic thrombocytopenic purpura (ITP)

ABSTRACT: Five ITP and five control whole blood samples were collected with IRB approval. The age range of ITP patients was 1-54 years, and the range in platelet counts was 2,000-98,000 W 109/L. We examined only one ITP sample for antiplatelet antibodies, and found it to be positive. Total RNA was isolated from 2.5 ml whole blood according to the PAXgene Blood RNA System (PreAnalytix, Switzerland). RNA isolated from ITP patients and controls, along with Human Universal Reference RNA (Stratagene, La Jolla, CA) were linearly amplified using the MessageAmp aRNA amplification kit (Ambion, Austin, TX). Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Keywords: Logical Set

ORGANISM(S): Homo sapiens

PROVIDER: GSE5812 | GEO | 2006/09/12

SECONDARY ACCESSION(S): PRJNA97193

REPOSITORIES: GEO

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Transcription profiling of whole blood samples from humans with Immune Thrombocytopenic Purpura (ITP) and control patients

Project description:Five ITP and five control whole blood samples were collected with IRB approval. The age range of ITP patients was 1-54 years, and the range in platelet counts was 2,000-98,000 W 109/L. We examined only one ITP sample for antiplatelet antibodies, and found it to be positive. Total RNA was isolated from 2.5 ml whole blood according to the PAXgene Blood RNA System (PreAnalytix, Switzerland). RNA isolated from ITP patients and controls, along with Human Universal Reference RNA (Stratagene, La Jolla, CA) were linearly amplified using the MessageAmp aRNA amplification kit (Ambion, Austin, TX).

2006-09-18 | E-SMDB-3822 | biostudies-arrayexpress

Gene expression profile of idiopathic thrombocytopenic purpura (ITP)

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Project description:MicroRNA are small non-coding RNA molecules that regulate gene expression. To investigate the role of microRNA in ITP, we performed genome-wide expression analyses of mRNA and microRNA in T-cells from ITP patients and controls. We identified 1,915 regulated genes and 22 regulated microRNA that differed between ITP patients and controls. Seventeen of the 22 regulated microRNA were linked to changes in target gene expression; 57 of these target genes were associated with the immune system, e.g. T-cell activation and regulation of immunoglobulin production. CXCL13 and IL-21 were two microRNA target genes significantly increased in ITP. We could demonstrate increased plasma levels of CXCL13 and others have reported increased plasma levels of IL-21 in ITP. Thus, regulated microRNA were significantly associated with both gene and protein expression of molecules in immunological pathways. We suggest that microRNA may be important regulatory molecules involved in the loss of tolerance in ITP. Microarray expression analysis of mRNA and miRNA in peripheral blood T-cell of control and ITP patients.

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Differences in gene expression and cytokines levels between newly diagnosed and chronic pediatric immune thrombocytopenia (ITP)

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