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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Hippocampal transcriptome of young adult and middle-aged ES animals

ABSTRACT: This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

ORGANISM(S): Rattus norvegicus

SUBMITTER: Deepika Suri

PROVIDER: E-GEOD-29637 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Early stress evokes temporally distinct consequences on the hippocampal transcriptome, anxiety and cognitive behaviour.

Suri Deepika D Bhattacharya Amrita A Vaidya Vidita A VA

The international journal of neuropsychopharmacology 20130912 2

The early stress of maternal separation (ES) exerts long-lasting effects on cognition and anxiety. Recent evidence indicates enhanced hippocampus-dependent spatial learning in young adult ES animals, which shifts towards a decline in long-term memory in middle-aged life. Further, we find that ES animals exhibit enhanced anxiety in young adulthood that does not persist into middle-aged life. Here, we demonstrate unique, predominantly non-overlapping, hippocampal transcriptomes in young adult and ...[more]

PMID: 24025219

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To examine the influence of the early stress of maternal separation on the hippocampal transcriptome in middle-aged life

Project description:In this study, we examined the consequences of the early stress (ES) of maternal separation on hippocampal gene expression in middle-aged animals. Middle-aged (15 months old) ES animals exhibit hippocampal transcriptome changes with a significant regulation of genes associated with ion binding, transcriptional regulation, cellular projection, cellular stress responsive pathways, neuronal development and chromatin remodeling. Agilent one-color experiment, Agilent-024724 Genotypic-designed Custom Rattus Norvegicus 8x15k; Organism: Rattus norvegicus; Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442); Biological replicates: 5 per early stress group, 3 per control group

2013-10-11 | E-GEOD-29414 | biostudies-arrayexpress

To examine the influence of the early stress of maternal separation on the hippocampal transcriptome in young adulthood

Project description:In this study, we examined the consequences of the early stress (ES) of maternal separation on hippocampal gene expression in young adulthood. Young adult (2 months old) ES animals exhibit hippocampal transcriptome changes with a significant regulation of genes associated with intracellular signaling, MAP kinase signaling, plasma membrane function, neurotransmitter and neuropeptide receptors and cytoskeletal components. Agilent one-color experiment, Agilent-024724 Genotypic-designed Custom Rattus Norvegicus 8x15k; Organism: Rattus norvegicus; Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442); Biological replicates: 4 per treatment group.

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Transcription profiling of rat cerebellum and hippocampus following exposure to neurotoxicant Aroclor 1254

Project description:Pregnant rats (Long-Evans) were dosed perinatally with 0 or 6Â mg/kg/day of Aroclor 1254 from gestation day 6 through postnatal day (PND) 21. Gene expression in cerebellum and hippocampus from PND7 and PND14 animals was analyzed with an emphasis on developmental aspects. Changes in gene expression (>= 1.5 fold) in control animals identified normal developmental changes. These basal levels of expression were compared to data from Aroclor 1254-treated animals to determine the impact of gestational PCB exposure on developmental parameters. The results indicate that the expression of a number of developmental genes related to cell cycle, synaptic function, cell maintenance, and neurogenesis is significantly altered from PND7 to PND14. Aroclor 1254 treatment appears to dampen the overall growth-related gene expression levels in both regions with the effect being more pronounced in the cerebellum. Functional analysis suggests that Aroclor 1254 delays maturation of the developing nervous system, with the consequences dependent on the ontological state of the brain area and the functional role of the individual gene. Experiment Overall Design: Pregnant rats (Long-Evans) were dosed perinatally with 0 or 6Â mg/kg/day of Aroclor 1254 from gestation day 6 through postnatal day (PND) 21. Gene expression in cerebellum and hippocampus from PND7 and PND14 animals was analyzed with an emphasis on developmental aspects.

2009-09-23 | E-GEOD-13793 | biostudies-arrayexpress

VSL#3 protects against development of visceral pain in the neonatal maternal separation model: A whole genome microarray study

Project description:Background & Aims: Irritable bowel syndrome (IBS) is a disorder characterized by chronic abdominal pain and is linked to post-inflammatory and stress-correlated factors that cause changes in the perception of visceral events. Increased evidence indicates that probiotic bacteria may be useful in treating IBS. Our aims were to evaluate the efficacy of treatment with VSL#3, a mixture of 8 probiotic bacteria strains, in the neonatal maternal separation (NMS)-induced visceral hypersensitivity rat model and to determine whether it modulates the colonic expression of pain-related genes. Methods: Male NMS pups were treated orally with placebo or VSL#3 at days 3-60, while normal, not separated rats were used as control. After 60 days from birth, perception of painful sensation induced by colorectal distension (CRD) was measured by assessing the abdominal withdrawal reflex (score 0-4). The colonic gene expression analysis was assessed by using Agilent Whole Rat Genome Oligo Microarrays. Results: NMS rats exhibited both hyperalgesia and allodynia when compared with controls. VSL#3 showed a potent analgesic effect on CRD-induced pain without modifying colorectal compliance. The microarray analysis demonstrated that NMS rats had both over- and downregulation of several genes involved in inflammatory and painful processes and VSL#3 was able to counteract these alterations. Conclusions: This study indicates that VSL#3 is effective in reducing visceral pain in an experimental model of IBS by induction or suppression of pain-modulating genes. These observations provide support for the use of VSL#3 in the treatment of painful conditions related to IBS. The dataset comprises 12 samples divided into three sample groups each representing a certain treatment condition of male rats.

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Maternal cecal microbiota transfer rescues early-life antibiotic-induced enhancement of type 1 diabetes in mice-the short term restoration

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Transcriptional differentiation along the longitudinal axis of the developing hippocampus.

Project description:The role of the hippocampus in learning and memory has been widely studied. However, studies of differences along the longitudinal axis indicate that the hippocampus is perhaps not a singular structure, but instead it is thought that the dorsal and ventral poles of the hippocampus have functional differences. An anatomical gradient of hippocampal inputs along the dorsal-ventral axis supports this notion. It has been recently shown that there is transcriptional differentiation along the longitudinal axis of the adult hippocampus, coinciding with functional and anatomical gradients. Understanding the development of the dorsal-ventral hippocampal axis will further our understanding of the different hippocmapal functional contributions along the longitudinal axis. However, analysis of transcriptional gradients along the dorsal ventral axis have not been studied in the neonatal rat during development. We performed an extensive bead-chip based geneome-wide analysis of transcriptional differences in dorsal, intermediate, and ventral hippocampal tissue of rats aged postnatal day 0 (P0), P9, P18 and P60.

2015-05-01 | E-MTAB-2617 | biostudies-arrayexpress

Transcription profiling of mouse hindlimb muscle, comparison of wild type and mdx mice, 7 to 112 Day

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2007-10-05 | E-GEOD-1025 | biostudies-arrayexpress

Transcription profiling of mouse extraocular muscle, comparison of wild type and mdx mice, 14 to 112 Days

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