Rattus norvegicus
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ABSTRACT:
PROVIDER: PRJNA202075 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Methamphetamine (METH) is a widely abused illicit amphetamine that causes acute biochemical and molecular changes in the brain. However, there are very few studies that have investigated the long-term effects of a single METH exposure in adult animals. The purpose of this study was thus to determine the consequences of a single injection of METH (10) mg/kg) on the biochemical and transcriptional effects of a second challenge injection of the drug (2.5 mg/kg) given one month later. Towards that end, we measured monoamine levels and gene expression by microarray and quantitative PCR analyses in the nucleus accumbens (NAc) of 4 groups of rats: saline-pretreated and saline-challenged (SS); saline-pretreated and METH-challenged (SM); METH-pretreated and saline-challenged (MS); and METH-pretreated and METH-challenged (MM). The rats were euthanized 2 hours after the acute challenge injection and NAc samples were harvested. The acute METH challenge caused increases in NAc DA and HVA levels in both the SM and MM groups. Microarray analyses revealed that an injection of METH (2.5 mg/kg) produced acute changes (1.8-fold; p < 0.01) in the expression of 418 (358 up-, 60 downregulated) genes including several immediate early genes (IEGs) such as Arc, c-fos, and fosB in the SM group. Several neuropeptides including Cart, Crf (Crh), and vasopressin were upregulated in that group. Injection of the higher dose of METH (10 mg/kg) did not influence monoamine levels but caused changes in 510 (345 up-, 165 downregulated) transcripts measured one month later (MS group). This list included Cart and Crf but not any IEGs. The MM group showed changes in 774 (572 up-, 202 downregulated) genes that also included vasopressin, Cart, and Crf whose expression was enhanced by the second METH injection. Quantitative PCR confirmed the METH-induced changes in the expression of the neuropeptides. We also confirmed the METH-induced potentiation of Crf expression in the METH-pretreated group. These observations suggest that a single injection of a moderate dose of METH can produce long-lasting changes in gene expression in the rodent NAc. The long-term increases in Crf expression also suggest that a single injection of a moderate METH dose can cause prolonged dysregulation in the endogenous stress system in the rat brain. 24 samples. SS (4), SM (6), MS (7), MM (7)
2013-06-30 | E-GEOD-46717 | biostudies-arrayexpress
Project description:Using ssRNA-seq, we examined the alteration of transcription profiles in the nucleus accumbens of methamphetamine-sensitized mice. Methamphetamine was a commonly abused psychostimulant. Repeated exposure to methamphetamine elicited long-lasting cellular and molecular changes, including the aberrant expression of coding and non-coding RNAs, which may involve in methamphetamine-induced locomotor sensitization and addiction.
2017-01-15 | E-MTAB-2843 | biostudies-arrayexpress
Project description:We performed single-nuclei RNAseq of Brown Norway rat nucleus accumbens after a single injection of morphine or after morhpine self-administration
2022-09-20 | GSE171165 | GEO
Project description:Methamphetamine (METH) is a widely abused illicit amphetamine that causes acute biochemical and molecular changes in the brain. However, there are very few studies that have investigated the long-term effects of a single METH exposure in adult animals. The purpose of this study was thus to determine the consequences of a single injection of METH (10) mg/kg) on the biochemical and transcriptional effects of a second challenge injection of the drug (2.5 mg/kg) given one month later. Towards that end, we measured monoamine levels and gene expression by microarray and quantitative PCR analyses in the nucleus accumbens (NAc) of 4 groups of rats: saline-pretreated and saline-challenged (SS); saline-pretreated and METH-challenged (SM); METH-pretreated and saline-challenged (MS); and METH-pretreated and METH-challenged (MM). The rats were euthanized 2 hours after the acute challenge injection and NAc samples were harvested. The acute METH challenge caused increases in NAc DA and HVA levels in both the SM and MM groups. Microarray analyses revealed that an injection of METH (2.5 mg/kg) produced acute changes (1.8-fold; p < 0.01) in the expression of 418 (358 up-, 60 downregulated) genes including several immediate early genes (IEGs) such as Arc, c-fos, and fosB in the SM group. Several neuropeptides including Cart, Crf (Crh), and vasopressin were upregulated in that group. Injection of the higher dose of METH (10 mg/kg) did not influence monoamine levels but caused changes in 510 (345 up-, 165 downregulated) transcripts measured one month later (MS group). This list included Cart and Crf but not any IEGs. The MM group showed changes in 774 (572 up-, 202 downregulated) genes that also included vasopressin, Cart, and Crf whose expression was enhanced by the second METH injection. Quantitative PCR confirmed the METH-induced changes in the expression of the neuropeptides. We also confirmed the METH-induced potentiation of Crf expression in the METH-pretreated group. These observations suggest that a single injection of a moderate dose of METH can produce long-lasting changes in gene expression in the rodent NAc. The long-term increases in Crf expression also suggest that a single injection of a moderate METH dose can cause prolonged dysregulation in the endogenous stress system in the rat brain.
2013-06-30 | GSE46717 | GEO
Project description:This dataset contains single-nucleus RNA sequencing results from adult rat brain (nucleus accumbens) and serves as the basis for characterization of transcriptional response to cocaine (20mg/kg, intraperitoneal injection). The goal of this experiment was to define the transcriptional response to cocaine across distinct cell types in the nucleus accumbens. Single-cell sequencing was carried out on FACS-sorted nuclei isolated from these experiments using the 10X Genomics Chromium single cell sequencing platform.
2020-06-24 | GSE137763 | GEO
Project description:Using microRNA-Seq, we examined the alteration of microRNA expression profiles in the nucleus accumbens of methamphetamine-sensitized and saline-control mice. Nucleus accumbens lysate from eight mice of each group were pooled as one sample. Two RNA samples from each group were prepared and were then processed to generate small RNA libraries, which were sequenced on the Illumina Hiseq 2000. The aberrant expression of microRNAs identified in this study may involve in METH-induced locomotor sensitization and addiction.
2022-07-13 | E-MTAB-2901 | biostudies-arrayexpress
Project description:This dataset contains single-nucleus RNA sequencing results from adult rat brain (nucleus accumbens) and serves as the basis for characterization of transcriptional response to repeated cocaine injections (20mg/kg, intraperitoneal injection). The goal of this experiment was to define the transcriptional response to repeated cocaine across distinct cell types in the nucleus accumbens. Single-cell sequencing was carried out with FACS-sorted nuclei isolated from these experiments using the 10X Genomics Chromium single cell sequencing platform.
2023-01-15 | GSE222418 | GEO
Project description:This dataset contains single nucleus Assay for Transposase-Accessible Chromatin (ATAC) sequencing results from rat nucleus accumbens tissue. Rats received repeated cocaine injections (20mg/kg, intraperitoneal injection), or saline injections as a control. Single-nucleus ATAC-seq was carried out with FACS-sorted nuclei using the 10X Genomics Chromium single cell sequencing platform using the Chromium Next GEM Single Cell ATAC Kit v2.
2023-08-07 | GSE233754 | GEO
Project description:Animal models provide opportunity to study neurobiological aspects of human alcoholism. Changes in gene expression have been implicated in mediating brain function, including reward system and addiction. The current study aimed to identify novel genes that may underlie ethanol preference. Microarray analysis comparing gene expression in nucleus accumbens (NAc), hippocampus (HP) and prefrontal medial cortex (mPFC) was performed in two rat strains selected for extreme levels of ethanol preference - Warsaw High Preferring (WHP) and Warsaw Low Preferring (WLP). The identified candidate genes may underlie differential ethanol preference in rat model of alcoholism. This is analysis of 18 RNA samples, including 9 technical replicates. Two strains of rats selected for extreme levels of ethanol preference (low preferring WLP and high preferring WHP) were compared. Three brain areas (nucleus accumbens, prefrontal medial cortex and hippocampus) were studied. For each brain area, 6 RNA samples (including 3 technical replicates) were analyzed. Each RNA sample consist of of equal amounts of total RNA from 3 male rats. Comparisons: Nucleus accumbens of WHP vs. Nucleus accumbens of WLP; Prefrontal medial cortex of WHP vs. Prefrontal medial cortex of WLP; Hippocampus of WHP vs. Hippocampus of WLP. 3 biological replicates in each comparison.
2015-01-17 | E-GEOD-65064 | biostudies-arrayexpress
Project description:Individual variation in the addiction liability of amphetamines can be explained, in part, by heritable genetic factors. We recently identified Hnrnph1 (heterogeneous nuclear ribonucleoprotein H1) as a quantitative trait gene underlying variance in the locomotor stimulant response to methamphetamine in mice. The functional consequences of Hnrnph1 mutation on MA reward and reinforcement and the mechanisms by which Hnrnph1 alters methamphetamine sensitivity are unknown but could involve functional perturbations in dopamine neurotransmission. Here, we showed that mice with a heterozygous mutation in the first coding exon of Hnrnph1 (H1+/-) exhibited reduced methamphetamine reinforcement and intake and dose-dependent changes in methamphetamine reward as measured via conditioned place preference. Accordingly, H1+/- mice showed a robust decrease in methamphetamine-induced dopamine release in the nucleus accumbens with no change in baseline dopamine levels, dopamine transporter levels, or dopamine uptake. Surprisingly, immunohistochemical and immunoblot staining of midbrain dopaminergic neurons and their forebrain projections for tyrosine hydroxylase did not reveal any obvious changes in intensity or numbers of cells stained or in the number of forebrain TH-positive puncta. Finally, we observed a two-fold increase in hnRNP H protein in the striatal synaptosme of H1+/- mice; proteomic analysis identified an increased abundance of several mitochondrial complex I and V proteins. We conclude that H1+/- deficits in behavior are associated with blunted MA-induced dopamine release and an upregulation of synaptic mitochondrial proteins.
2019-07-29 | MSV000084149 | MassIVE