Bipolar affective disorder is a severe psychiatric disorder with a strong genetic component but unknown pathophysiology. We used microarray technology (Affymetrix HG-U133A GeneChips) to determine the expression of approximately 22 000 mRNA transcripts in post-mortem brain tissue (dorsolateral prefrontal cortex and orbitofrontal cortex) from patients with bipolar disorder and matched healthy controls.
Gene expression analysis of bipolar disorder reveals downregulation of the ubiquitin cycle and alterations in synaptic genes.
Sex, Age, Disease
View SamplesBipolar affective disorder is a severe psychiatric disorder with a strong genetic component but unknown pathophysiology. We used microarray technology (Affymetrix HG-U133A GeneChips) to determine the expression of approximately 22 000 mRNA transcripts in post-mortem brain tissue (dorsolateral prefrontal cortex) from patients with bipolar disorder and matched healthy controls. A cohort of 70 subjects was investigated and the final analysis included 30 bipolar and 31 control subjects. Differences between disease and control groups were identified using a rigorous statistical analysis with correction for confounding variables and multiple testing.
Gene expression analysis of bipolar disorder reveals downregulation of the ubiquitin cycle and alterations in synaptic genes.
Sex, Age, Disease
View SamplesBipolar affective disorder is a severe psychiatric disorder with a strong genetic component but unknown pathophysiology. We used microarray technology (Affymetrix HG-U133A GeneChips) to determine the expression of approximately 22 000 mRNA transcripts in post-mortem brain tissue (orbitofrontal cortex) from patients with bipolar disorder and matched healthy controls. Orbitofrontal cortex tissue from a cohort of 30 subjects was investigated and the final analysis included 10 bipolar and 11 control subjects. Differences between disease and control groups were identified using a rigorous statistical analysis with correction for confounding variables and multiple testing.
Gene expression analysis of bipolar disorder reveals downregulation of the ubiquitin cycle and alterations in synaptic genes.
Sex, Age, Disease
View SamplesDown syndrome (DS) is the result of trisomy chromosome 21 but the mechanisms by which the genotype leads to the characteristic disease phenotype are unclear. We performed a microarray study using human adult brain tissue (dorsolateral prefrontal cortex) from DS subjects and healthy controls to characterise for the first time the human adult Down syndrome brain
Gene expression profiling in the adult Down syndrome brain.
Sex, Age, Disease
View SamplesNeurons and endothelial cells were identified by immunohistochemistry in human brains, isolated by laser-capture-microdissection and used to find genes preferentially expressed in the two cell types.
Evolution of neuronal and endothelial transcriptomes in primates.
Sex, Specimen part
View SamplesIn order to assess the impact of three rounds of linear amplification on the technical reproducibility of gene expression measurements, we performed twelve microarray experiments. We analysed mouse RNA from cortex, cerebellum and liver from one individual. One RNA sample of 5g from each of the three different tissues was processed according to the standard Affymetrix protocol and hybridized onto mouse gene expression arrays MG_U74Av2. Three additional samples from each tissue of 1ng were processed according to a modified procedure that involves three linear amplifications before hybridization onto the microarray chips.
Evolution of neuronal and endothelial transcriptomes in primates.
Specimen part
View SamplesWe used laser capture microdissection to isolate both microvascular endothelial cells and neurons from post mortem brain tissue from patients with schizophrenia and bipolar disorder and healthy controls. RNA was isolated from these cell populations, amplified, and analysed using Affymetrix HG133plus2.0 GeneChips. In the first instance, we used the dataset to compare the neuronal and endothelial data, in order to demonstrate that the predicted differences between cell types could be detected using this methodology.
The cerebral microvasculature in schizophrenia: a laser capture microdissection study.
Specimen part
View SamplesAnalysis of gene expression in pathologically confirmed glioblastoma (GBM) samples. These data were used to test a classifier that was generated to distinguish GBM tumor samples with loss of neurofibromin 1 (NF1) function
A machine learning classifier trained on cancer transcriptomes detects NF1 inactivation signal in glioblastoma.
Sex, Age, Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Physiological genomics of response to soil drying in diverse Arabidopsis accessions.
Specimen part, Treatment
View SamplesThese data provide a basis for exploration of gene expression differences between physiologically diverse Spring annual accessions of Arabidopsis thaliana.
Physiological genomics of response to soil drying in diverse Arabidopsis accessions.
Specimen part, Treatment
View Samples