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ABSTRACT:
PROVIDER: PRJNA793387 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Changes in the gene expression profiles of the inferior colliculus following unilateral cochlear ablation in adult rats To explore gene expression changes in the inferior colliculus (IC) after single-sided deafness
2021-01-31 | GSE163462 | GEO
Project description:Study of Mesocricetus auratus' Inferior Colliculus Transcriptome after acustic stimulation
| PRJNA230618 | ENA
Project description:Using microarray analyses and subsequent verification by RT-PCR, we studied the changes in gene expression in the inferior colliculus after an ictal event in one models of audiogenic epilepsy, Wistar audigenic rat (WAR). WAR is a genetically selected strain susceptible to audiogenic seizures that was inbred in the School of Medicine of Ribeirão Preto (Brazil) beginning in 1990. This strain is a model of audiogenic idiopathic epilepsy that develops tonic-clonic generalized seizures. Genetic animal models of epilepsy are an important tool for further understanding the basic cellular mechanisms underlying epileptogenesis and for developing novel antiepileptic drugs. We conducted a comparative study of gene expression in the inferior colliculus, a nucleus that triggers audiogenic seizures, using two animal models, the Wistar audiogenic rat (WAR) and the genetic audiogenic seizure hamster (GASH:Sal). For this purpose, both models were subjected to auditory stimulation, and 60 minutes after stimulation, the inferior colliculi were collected. As a control, intact Wistar rats and Syrian hamsters were subjected to identical stimulation and tissue preparation protocols to those performed on the experimental animals.
2015-12-31 | GSE74150 | GEO
Project description:Using microarray analyses and subsequent verification by RT-PCR, we studied the changes in gene expression in the inferior colliculus after an ictal event in one models of audiogenic epilepsy, genetic audiogenic seizure hamster (GASH:Sal). GASH:Sal, a hamster strain developed at the University of Salamanca, exhibits genetic audiogenic epilepsy similar to human Grand Mal epilepsy. GASH:Sal shows an autosomal recessive inheritance for susceptibility to audiogenic seizures, which manifest more severely in young animals; the seizure severity progressively declines with age. Genetic animal models of epilepsy are an important tool for further understanding the basic cellular mechanisms underlying epileptogenesis and for developing novel antiepileptic drugs. We conducted a comparative study of gene expression in the inferior colliculus, a nucleus that triggers audiogenic seizures, using two animal models, the Wistar audiogenic rat (WAR) and the genetic audiogenic seizure hamster (GASH:Sal). For this purpose, both models were subjected to auditory stimulation, and 60 minutes after stimulation, the inferior colliculi were collected. As a control, intact Wistar rats and Syrian hamsters were subjected to identical stimulation and tissue preparation protocols to those performed on the experimental animals.
2015-12-31 | GSE74043 | GEO
Project description:Using microarray analyses and subsequent verification by RT-PCR, we studied the changes in gene expression in the inferior colliculus after an ictal event in one models of audiogenic epilepsy, genetic audiogenic seizure hamster (GASH:Sal). GASH:Sal, a hamster strain developed at the University of Salamanca, exhibits genetic audiogenic epilepsy similar to human Grand Mal epilepsy. GASH:Sal shows an autosomal recessive inheritance for susceptibility to audiogenic seizures, which manifest more severely in young animals; the seizure severity progressively declines with age. Genetic animal models of epilepsy are an important tool for further understanding the basic cellular mechanisms underlying epileptogenesis and for developing novel antiepileptic drugs. We conducted a comparative study of gene expression in the inferior colliculus, a nucleus that triggers audiogenic seizures, using two animal models, the Wistar audiogenic rat (WAR) and the genetic audiogenic seizure hamster (GASH:Sal). For this purpose, both models were subjected to auditory stimulation, and 60 minutes after stimulation, the inferior colliculi were collected. As a control, intact Wistar rats and Syrian hamsters were subjected to identical stimulation and tissue preparation protocols to those performed on the experimental animals. A total of 24 animals were used in this study according to the following distribution: 12 control Syrian hamsters (Mesocricetus auratus) and 12 GASH:Sal at 16 weeks of age and a body weight of approximately 60 g. Six animals Syrian and GASH:Sal hamsters, respectively, were exposed to auditory stimulation, and 60 min after the seizures, we harvested the IC for all gene expression analyses (stimulated Syrian hamsters and stimulated GASH:Sal hamsters). As controls, other six animals Syrian and GASH:Sal hamsters, respectively, were not exposed to the same stimulation (Syrian hamsters and GASH:Sal hamsters).
2015-12-31 | E-GEOD-74043 | biostudies-arrayexpress
Project description:Using microarray analyses and subsequent verification by RT-PCR, we studied the changes in gene expression in the inferior colliculus after an ictal event in one models of audiogenic epilepsy, Wistar audigenic rat (WAR). WAR is a genetically selected strain susceptible to audiogenic seizures that was inbred in the School of Medicine of Ribeirão Preto (Brazil) beginning in 1990. This strain is a model of audiogenic idiopathic epilepsy that develops tonic-clonic generalized seizures. Genetic animal models of epilepsy are an important tool for further understanding the basic cellular mechanisms underlying epileptogenesis and for developing novel antiepileptic drugs. We conducted a comparative study of gene expression in the inferior colliculus, a nucleus that triggers audiogenic seizures, using two animal models, the Wistar audiogenic rat (WAR) and the genetic audiogenic seizure hamster (GASH:Sal). For this purpose, both models were subjected to auditory stimulation, and 60 minutes after stimulation, the inferior colliculi were collected. As a control, intact Wistar rats and Syrian hamsters were subjected to identical stimulation and tissue preparation protocols to those performed on the experimental animals. A total of 15 animals were used in this study according to the following distribution: 9 male WAR and 6 male control rats (Rattus norvegicus, Wistar albino, Charles River Laboratories) at 12 weeks of age and a body weight of approximately 230 g. The animals were exposed to auditory stimulation, and 60 min after the seizures, we harvested the IC for all gene expression analyses. As controls, normal Wistar rats were exposed to the same stimulation according to the identical procedure. For gene microarray (Rat Gene 1.0 ST), the rats were randomly divided into two groups, and we used both sides of the IC (ipsilateral and contralateral) from each animal: stimulated Wistar rats and stimulated WAR rats.
2015-12-31 | E-GEOD-74150 | biostudies-arrayexpress
Project description:We performed a microarray analysis of auditory midbrain (inferior colliculus, IC) mRNA from young adult CBA mice (controls) with good hearing, middle aged (MA) with good hearing, and old mild (MP) and severe (SP) presbycusic CBA mice. Fold Change data derived from RMA normalization revealed that the overall GABA receptor alpha 6 expression profiles for MA, MP and SP were down-regulated relative to young adult controls with good hearing. Relative real-time PCR for five GABA receptors confirmed this age-related down regulation quantitatively. Functional hearing data: Auditory Brainstem Responses (ABR) enriched the analysis to select the probe-sets that changed with age and hearing loss by the linear regression best-fit line model technique. GABA receptor genotype-phenotype correlations with auditory functional data indicated that GABA-receptor subtypes are under expressed in SP mice. Hierarchical clustering (HC) analyses yielded statistical significance of normalized GeneChip data Real-time PCR showed that Gabra6, GABA B receptor 1 (Gabbr1), and Gaba transporter protein Slc32a1 may be involved in physiological changes that occur in age-related hearing loss. Presbycusis – age-related hearing loss – is the number one communicative disorder of our aged population. In this study we analyzed gene expression for a set of GABA receptors in the inferior colliculus of aging CBA mice using the Affymetrix GeneChip MOE430A. Functional phenotypic hearing changes from RMA normalized microarray data (39 replicates) in four age-groups, Young Controls and Middle aged mice with good hearing, mild and sever e presbycusis from old mice. Fold change gene expression derived from RMA normalized data were first subjected to one-way ANOVA, and then linear regression was performed. The selected gene expression changes were confirmed by relative real-time relative to young adult controls with good hearing. Statistically significant and real time PCR confirmed GABA receptor genes; Gabra6, GABA B receptor 1 (Gabbr1), and Gaba transporter protein Slc32a1, may be involved in physiological changes that occur in age-related hearing loss. Lastly, gene expression measures of each age group were correlated with pathway/network relationships relevant to the inferior colliculus using Pathway Architect, to identify key pathways consistent with the gene expression changes observed In the study of Expression changes in IC GABA receptors in the Auditory Midbrain of young adult and aging presbycusis mice total of thirty nine chips were used. The normal aging mice were in Four groups Young adults Controls with good hearing (8 mice, 8 MOE430A GeneChips), Middle aged group with good hearing ( 17 mice, 17 MOE430A GeneChips), Mild Presbycusis with limited hearing loss (9 mice, 9 MOE430A GeneChips) and Severe Presbycusis (5 mice, 5 MOE430A GeneChips).
2013-08-06 | E-GEOD-49522 | biostudies-arrayexpress
Project description:Mammalian energy homeostasis is regulated by the hypothalamus and hindbrain, with the hippocampus, midbrain nuclei, and other regions implicated by evidence from human genetics studies. In order to understand how these brain regions respond to imbalances in energy homeostasis, we performed two experiments examining the effects of different diets in male C57BL6 mice. In our first study, groups of 6 pair-housed mice were given access to chow, high-fat diet or fasted for 16 hours. In our subsequent study, two groups of 10 mice were single-housed and given access to chow or fasted for 24h. We recorded food intake for each cage, the change in body weight for each animal, and collected hypothalamus, hippocampus, superior colliculus, inferior colliculus, prefrontal cortex, and zona incerta samples. We performed bulk RNA sequencing on 185 samples and validated them by a series of quality control assessments including alignment quality and gene expression profiling. We believe these studies capture the transcriptomic effects of acute fasting and high fat diet in the rodent brain and provide a valuable reference.
2023-11-21 | GSE236077 | GEO
Project description:We performed a microarray analysis of auditory midbrain (inferior colliculus, IC) mRNA from young adult CBA mice (controls) with good hearing, middle aged (MA) with good hearing, and old mild (MP) and severe (SP) presbycusic CBA mice. Fold Change data derived from RMA normalization revealed that the overall GABA receptor alpha 6 expression profiles for MA, MP and SP were down-regulated relative to young adult controls with good hearing. Relative real-time PCR for five GABA receptors confirmed this age-related down regulation quantitatively. Functional hearing data: Auditory Brainstem Responses (ABR) enriched the analysis to select the probe-sets that changed with age and hearing loss by the linear regression best-fit line model technique. GABA receptor genotype-phenotype correlations with auditory functional data indicated that GABA-receptor subtypes are under expressed in SP mice. Hierarchical clustering (HC) analyses yielded statistical significance of normalized GeneChip data Real-time PCR showed that Gabra6, GABA B receptor 1 (Gabbr1), and Gaba transporter protein Slc32a1 may be involved in physiological changes that occur in age-related hearing loss. Presbycusis – age-related hearing loss – is the number one communicative disorder of our aged population. In this study we analyzed gene expression for a set of GABA receptors in the inferior colliculus of aging CBA mice using the Affymetrix GeneChip MOE430A. Functional phenotypic hearing changes from RMA normalized microarray data (39 replicates) in four age-groups, Young Controls and Middle aged mice with good hearing, mild and sever e presbycusis from old mice. Fold change gene expression derived from RMA normalized data were first subjected to one-way ANOVA, and then linear regression was performed. The selected gene expression changes were confirmed by relative real-time relative to young adult controls with good hearing. Statistically significant and real time PCR confirmed GABA receptor genes; Gabra6, GABA B receptor 1 (Gabbr1), and Gaba transporter protein Slc32a1, may be involved in physiological changes that occur in age-related hearing loss. Lastly, gene expression measures of each age group were correlated with pathway/network relationships relevant to the inferior colliculus using Pathway Architect, to identify key pathways consistent with the gene expression changes observed
2013-08-06 | GSE49522 | GEO