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Transcription profiling of human optic nerve head astrocytes in Caucasian and African americans with or without glaucoma

ABSTRACT: To determine whether optic nerve head astrocytes, a key cellular component of glaucomatous neuropathy, exhibit differential gene expression in primary culture of astrocytes from African American donors with or without glaucoma, compared to astrocytes from Caucasian American donors with or without glaucoma. Experiment Overall Design: We divided samples into four group: Caucasian American normal, Caucasian American with glaucoma, African American normal and African American with glaucoma. We analyzed data from Affymetrix Human Genome U133A 2.0 and U95 chips.

ORGANISM(S): Homo sapiens

SUBMITTER: Pan Du

PROVIDER: E-GEOD-9944 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcription profiling of human optic nerve head astrocytes in normal Caucasian and African americans

Project description:To determine whether optic nerve head astrocytes, a key cellular component of glaucomatous neuropathy, exhibit differential gene expression in primary culture of astrocytes from normal African American donors, compared to astrocytes from normal Caucasian American donors. All donors have no histories of eye disease, diabetes, or chronic CNS disease. Experiment Overall Design: We divided samples into two groups: normal Caucasian American and normal African American. We analyzed data from Affymetrix Human Genome Human Genome U133A and U133A 2.0 chips.

2008-06-17 | E-GEOD-9939 | biostudies-arrayexpress

Gene expression data on human optic nerve head astrocytes in Caucasian and African americans with or without glaucoma

2008-01-31 | GSE9944 | GEO

Transcription profiling of human optic nerve astrocytes from Caucasian and African Americans with or without glaucoma

Project description:This SuperSeries is composed of the following subset Series:; GSE9939: Gene expression data on human optic nerve head astrocytes in normal Caucasian and African americans; GSE9944: Gene expression data on human optic nerve head astrocytes in Caucasian and African americans with or without glaucoma Experiment Overall Design: Refer to individual Series

2008-04-07 | E-GEOD-9963 | biostudies-arrayexpress

Gene expression data on human optic nerve head astrocytes in normal Caucasian and African americans

2008-01-31 | GSE9939 | GEO

Human T cells isolated from healthy European and African American blood donors: Control vs. Interferon alpha 2b-treated

Project description:Transcriptional profiling of human T cells analyzing the impact of race on the responsiveness to IFNa in healthy blood donors. Control and IFNa-treated samples derived from healthy Caucasian American vs. African American blood donors are compared.

2010-01-27 | GSE17952 | GEO

Transcription profiling of human optic nerve head (ONH) astrocytes exposed to either 60 mm Hg hydrostatic pressure (HP) or control ambient pressure (CP) to identify HP-responsive genes

Project description:Gene expression in human optic nerve head (ONH) astrocytes exposed to either 60 mm Hg hydrostatic pressure (HP) or control ambient pressure (CP) was compared using Affymetrix GeneChip microarrays to identify HP-responsive genes. Primary ONH astrocytes from two male Caucasian donors (passage 4) were grown to 75% confluence and were exposed for 6, 24 or 48 h to control ambient pressure (CP6, CP24, CP48) or hydrostatic pressure (HP6, HP24, HP48), or harvested at the beginning of the pressure experiment (CP0). Total RNA was extracted using Qiagen RNeasy columns and converted to biotin-labeled cRNA by standard Affymetrix protocols available at web site http://pathology.wustl.edu/~mgacore/genechip.htm#Preparing. Hybridization of the labeled cRNA to Human Genome U95Av2 chips (Affymetrix) was carried out by using Genechip Instrument System (Affymetrix) at Genechip Core Facility of Washington University. A total of 44 chips were generated and distributed as follows: seven for control pressure (CP) at time 0, four CP at 6 h, seven for hydrostatic pressure (HP) at 6 h, eight for CP at 24 h, eight for HP at 24 h, five for CP at 48 h and five for HP at 48h P. The arrays were washed and stained with streptavidin-phycoerythrin followed by scanning on an Agilent GeneArray Scanner G2500A (Agilent Technologies, Palo Alto, CA), and then scanned by an Affymetrix GeneArray Scanner. Data was analyzed by Affymetrix Microarray Suite (version 5.0), linear regression analysis, and GeneSpring expression Analysis Software (version 6.0, Silicon Genetics). For analysis, the samples were scaled to the same target intensity (1500) to allow comparison of multiple samples, and raw data were normalized to median of each gene across all chips for fold change analysis using GeneSpring.

2007-09-25 | E-GEOD-758 | biostudies-arrayexpress

Human T cells isolated from healthy European and African American blood donors: Control vs. Interferon alpha 2b-treated

2010-05-16 | E-GEOD-17952 | biostudies-arrayexpress

DNA methylation contributes to natural human variation

Project description:DNA methylation analysis using the Infinium HumanMethylation450 BeadChip platform (Illumina) of 96 Caucasian American, 96 Han Chinese American and 96 African American LCL samples determined differences in terms of differentially methylated sites. Importantly, the observed differences were confirmed in primary blood samples of 10 healthy Caucasian, 10 African American (GSE36064) and 10 Asian individuals. Genes associated to differentially methylated site suggest an influence of DNA methylation on phenotype differences. Interestingly, methylation differences could be partially traced back to genetic polymorphisms.

2013-07-22 | GSE36369 | GEO

Circulating miRNAs as biomarkers and potential functional mediators of early stage breast cancer

Project description:Analysis of the levels of circulating miRNAs from women with early stage breast cancer and matched healthy controls. miRNAs in plasma samples from 20 women with early stage breast cancer (10 Caucasian American and 10 African American) compared with 20 matched healthy controls (10 Caucasian American and 10 African American).

2011-01-16 | E-GEOD-22981 | biostudies-arrayexpress

Differences in Timely Cancer Diagnosis in African American and Caucasian Patients With Newly Diagnosed Colorectal Cancer

Project description:RATIONALE: Gathering information about timely diagnosis in African American and Caucasian patients with newly diagnosed colorectal cancer may help doctors learn more about factors that influence a diagnosis and plan the best treatment. PURPOSE: This phase I trial is studying differences in timely cancer diagnosis in African American patients and in Caucasian patients with newly diagnosed colorectal cancer.

| 2068885 | ecrin-mdr-crc

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