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MiRNA expression after moderate Spinal Cord Injury in Rats

ABSTRACT: Identification of temporal variations in miRNA expression after spinal cord injury caused by thoracic (T8) moderate (200 Kdynes) contusion. Expression changes were analyzed 1, 3 and 7 days after injury and compared to expression of control (untreated) and sham (laminectony but no contusion) individuals.

ORGANISM(S): Human gammaherpesvirus 8 Mus musculus JC polyomavirus Rattus norvegicus Betapolyomavirus macacae Homo sapiens Human immunodeficiency virus 1 Murid gammaherpesvirus 4 Human betaherpesvirus 5 Human alphaherpesvirus 1 Betapolyomavirus hominis human gammaherpesvirus 4 Murid betaherpesvirus 1

PROVIDER: GSE19890 | GEO | 2011/07/01

SECONDARY ACCESSION(S): PRJNA122031

REPOSITORIES: GEO

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miRNA expression after moderate Spinal Cord Injury in Rats

Project description:Identification of temporal variations in miRNA expression after spinal cord injury caused by thoracic (T8) moderate (200 Kdynes) contusion. Expression changes were analyzed 1, 3 and 7 days after injury and compared to expression of control (untreated) and sham (laminectony but no contusion) individuals. Included groups: control (untreated), 1 day after lesion, 3 days after lesion, 7 days after lesion, 1 days after SHAM cirugy, 3 days after SHAM cirugy, and 7 days after SHAM cirugy. Each of these 7 groups included 5 biological replicates.

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trkB.T1 WT versus trkB.T1 KO expression data following spinal cord injury (SCI)

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Project description:Traumatic spinal cord injury (SCI) initiates a complex series of pathophysiological secondary responses that lead to tissue loss and functional deficits.This study represents a comprehensive database of temporal changes in gene expression that underlie the secondary injury response that occurs in a well-defined mouse model of contusion injury. Experiment Overall Design: Global changes in gene expression that contribute to secondary injury in a C57BL6 mouse model of contusion injury were evaluated using Affymetrix Mouse Genome 430 2.0 arrays.Mice were subjected to a moderate injury at the T8 spinal segment under isoflurane anesthesia.Sections of cord (0.4 cm in length) were analyzed from the site of impact and from the immediately adjacent rostral and caudal regions at 0.5, 4, 24, 72 h and 7 and 28 days after injury (n=3/per group), sham-injury (n=2 per group), or from naive mice (n=2). Four mice were pooled for each individual n, for a total of 12 mice for each injury time point.

2007-11-29 | E-GEOD-5296 | biostudies-arrayexpress

Chronic contusion spinal cord injury in rats

Project description:Excerpt from a larger study which characterized the transcriptional effects of a spinal cord contusion injury in rats. This is the data from the almost chronic contusion state (35 days) at the injury site (Thoracic 8) - where we saw significant changes in several areas, including cholesterol metabolism genes. Other spinal cord areas (rostral, caudal) and time-points (3 hours, 24 hours, 7 days and 35 days) were analyzed as well and are discussed in our paper and at www.crpf.org/microarray. Keywords = Spinal Cord Injury Keywords = chronic Keywords = thoracic Keywords = cholesterol Keywords: repeat sample

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Project description:In the present study, we sought to understand the impact of obesity/metabolic disease (high-fat induced) on spinal cord injury (SCI) by examining transcriptome. Adult, male Long Evans rats received either thoracic level contusion of the spinal cord or sham laminectomy and then were allowed to recover on normal rat chow for 4 weeks and further on HFD for an additional 8 weeks. Spinal cord tissues harvested from the rats were processed for Affymetrix microarray and further transcriptomic analysis.

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Genome-Wide Gene Expression Profiling of Spinal Cord Injury in Rat

Project description:The aneurysm clip impact-compression model of spinal cord injury (SCI) in animals mimics the primary mechanism of SCI in human, i.e. acute impact and persisting compression; and its histo-pathological and behavioural outcomes are extensively similar to the human SCI. In order to understand the distinct molecular events underlying this injury model, an analysis of global gene expression of the acute, subacute and chronic stages of a moderate to severe injury to the rat spinal cord was conducted using a microarray gene chip approach. Rat thoracic spinal cord (T7) was injured using aneurysm clip impact-compression injury model and the epicenter area of injured spinal cord was isolated for RNA extraction and processing and hybridization on Affymetrix GeneChip arrays.

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Transcription profiling time series of Rattus norvegicus raphe magnus and sensorimotor cortex samples following moderate spinal cord injury

Project description:Summary: Spinal cord injury (SCI) is a damage to the spinal cord induced by trauma or disease resulting in a loss of mobility or feeling. SCI is characterized by a primary mechanical injury followed by a secondary injury in which several molecular events are altered in the spinal cord often resulting in loss of neuronal function. Analysis of the areas directly (spinal cord) and indirectly (raphe and sensorimotor cortex) affected by injury will help understanding mechanisms of SCI. Hypothesis: Areas of the brain primarily affected by spinal cord injury are the Raphe and the Sensorimotor cortex thus gene expression profiling these two areas might contribute understanding the mechanisms of spinal cord injury. Specific Aim: The project aims at finding significantly altered genes in the Raphe and Sensorimotor cortex following an induced moderate spinal cord injury in T9.

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