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Expression of ventromedial hypothalamus (VMH) from electroconvulsive seizure (ECS) treated C57Bl/6 mice

ABSTRACT: The ventromedial nucleus of the hypothalamus (VMH) is thought to a satiety center and a potential target for anti-obesity therapy. Electroconvulsive seizure (ECS) therapy is highly effective in psychiatric diseases including depression, but also implicated beneficial effects on other neurological diseases. Although it has been reported that the neurons in the VMH are strongly activated by ECS stimulation, the effect of ECS in this hypothalamic subnucleus remains unknown. To address this issue, we investigated molecular changes in the VMH in response to ECS by utilizing a method of laser-capture microdissection coupled with microarray analysis, and examined behavioral effects of ECS via VMH activation. ECS significantly induced gene expression not only immediate-early genes such as Fos, Fosb and Jun, but also Bdnf, Adcyap1, and Hrh1 in the VMH after a single or repeated stimulus.

ORGANISM(S): Mus musculus

PROVIDER: GSE38311 | GEO | 2012/05/30

SECONDARY ACCESSION(S): PRJNA167693

REPOSITORIES: GEO

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Expression of ventromedial hypothalamus (VMH) from electroconvulsive seizure (ECS) treated C57Bl/6 mice

Project description:The ventromedial nucleus of the hypothalamus (VMH) is thought to a satiety center and a potential target for anti-obesity therapy. Electroconvulsive seizure (ECS) therapy is highly effective in psychiatric diseases including depression, but also implicated beneficial effects on other neurological diseases. Although it has been reported that the neurons in the VMH are strongly activated by ECS stimulation, the effect of ECS in this hypothalamic subnucleus remains unknown. To address this issue, we investigated molecular changes in the VMH in response to ECS by utilizing a method of laser-capture microdissection coupled with microarray analysis, and examined behavioral effects of ECS via VMH activation. ECS significantly induced gene expression not only immediate-early genes such as Fos, Fosb and Jun, but also Bdnf, Adcyap1, and Hrh1 in the VMH after a single or repeated stimulus. Mice received one or 7 times shock of ECS and their brains were collected at 2 h (VMH_1stECS2h, VMH_7thECS2h) or 6 h after shock (VMH_1stECS6h, VMH_7thECS6h). The brains of sham-treated animals were collected at 2 h after treatment(VMH_sham). The VMH was microdissected from dehydrated brain sections, and its total RNA was extracted. RNA samples from two or three animals were pooled to minimize the impact of biological variance. After nucleotide amplification by the ovation amplification, the gene expression profiles were obtained by the Affymetrix microarray analysis. The microarray analysis was performed twice using different sets of animals.

2012-05-29 | E-GEOD-38311 | biostudies-arrayexpress

Electroconvulsive Stimulation modulates Microglia. Transcriptome analysis of Biozzi-ABH mice spinal-cord microglia following electroconvulsive-seizures.

Project description:Neurostimulation by electroconvulsive therapy is highly effective in neuropsychiatric disorders by an unknown mechanism. Microglial toxicity plays a key role in chronic neuro-inflammatory brain diseases, where there is critical shortage in therapies. To investigate the direct effect of electroconvulsive seizures (ECS) on the CNS innate immune system, we performed transcriptome analysis on spinal microglia from ECS- and sham-treated naïve mice.

2022-09-01 | GSE137184 | GEO

Mus musculus

Project description:Expression of ventromedial hypothalamus (VMH) from electroconvulsive seizure (ECS) treated C57Bl/6 mice

| PRJNA167693 | ENA

Single nucleus RNA-seq atlas of mouse ventromedial hypothalamus

Project description:To uncover the cellular architecture of the mouse ventromedial hypothalamus (VMH), we used single nucleus RNA-seq (snRNA-seq) from wild-type mice.

2021-05-19 | GSE172204 | GEO

Single nucleus RNA-seq atlas of macaque ventromedial and dorsomedial hypothalamus

Project description:To uncover the cellular architecture of the macaque ventromedial (VMH) and dorsomedial hypothalamus (DMH), we used single nucleus RNA-seq (snRNA-seq) from a Rhesus macaque

2021-05-19 | GSE172203 | GEO

Transcriptional profiling of microdissected ventromedial hypothalamus in Nkx2-1 f/f vs. Nkx2-1 f/f; Sf1Cre female mice

Project description:Microdissected ventromedial hypothalamus (VMH) was profiled to identify transcriptional changes after Nkx2-1 ablation in female mice. Total RNA was extracted from conditional mutants (Nkx2-1 f/f; Sf1Cre) and floxed controls (Nkx2-1 f/f) at postnatal day 10 (P10) and profiled using Mouse ref8 v2.0 Illumina chips and reagents (n=4/group). The tissue profiled is microdissected ventromedial hypothalamus from P10 female mice. Controls and mutants are analyzed in quadruplicate.

2014-11-27 | E-GEOD-63656 | biostudies-arrayexpress

Genome-wide analysis of transcription factor FoxO1-responsive gene expression in the ventromedial hypothalamus

2012-03-31 | GSE36948 | GEO

Genome-wide analysis of transcription factor FoxO1-responsive gene expression in the ventromedial hypothalamus

Project description:Analysis of gene expression regulated by FoxO1 in the ventromedial hypothalamus (VMH) of wildtype and knockout mice. Results provide important information of gene expression in the VMH. The transcription factor FoxO1 contributes to leptin and insulin action, including cells in the brain. However, the neurons mediating these effects and the identity of the molecular targets through which FoxO1 exerts metabolic actions remains to be defined. For the gene expression profiling, total RNA was obtained from the VMH of WT and VMH-specific FoxO1 KO mice using Qiagen RNeasy Lipid Tissue Mini Kit (Qiagen Sciences, Maryland) and Phase Lock Gel (5 Prime Inc., Gaithersburg, MD). To make sure reproducibility and biological significance, triple hybridizations were performed for each genotype with the RNA from three independent VMH samples, each sample contains RNA from three animals (biological replicates). Genomics and Microarray Core Facility at UT-Southwestern (http://microarray.swmed.edu/) checked RNA quality with Bioanalyzer Chip and processed the samples for hybridization with Illumina Mouse-6 V2 BeadChip (Illumina Inc., San Diego, CA). We used Partek Genomics Suite 6.5 (Partek Inc., St Louis, MO) and Ingenuity Pathway Analysis (Ingenuity Systems, Inc., Redwood City, CA) for data analysis.

2012-03-30 | E-GEOD-36948 | biostudies-arrayexpress

Comparison of brain and hippocampal majority proteomes from MAP6 KO mice submitted or not to electroconvulsive stimulations

Project description:For major depression, the non-drug therapy Electroconvulsive therapy (ECT) treatment is highly effective and fast-acting. Despite a large and long-standing clinical use, the neurobiological mechanisms underlining ECT curative action are still poorly understood. Thanks to a genetic animal model that constitutively exhibit behavioural and biological features relevant to some aspects of major depressive disorder, here we analyse the behavioural and biological consequences of electroconvulsive stimulations (ECS), the animal model of ECT. We found that a classical ECS treatment, with 10 stimulation over 2 weeks period, has a beneficial effect on constitutive behavioural defects. We therefore compared brain and hippocampal majority proteomes from MAP6 KO mice submitted or not to electroconvulsive stimulations.

2019-03-12 | PXD008543 | Pride

MicroRNA-7a overexpression in VMH restores the sympathoadrenal response to hypoglycemia

Project description:It is proposed that the impaired sympathoadrenal response to hypoglycemia induced by recurrent insulin-induced hypoglycemia (RH) is an adaptive phenomenon induced by specific changes in microRNA expression in the ventromedial hypothalamus (VMH). To test this hypothesis, genome-wide microRNAomic profiling of the VMH by RNA-sequencing was performed in control and RH treated rats. Differential expression analysis identified microRNA-7a-5p and microRNA-665 as potential mediators of this phenomenon. To further test this hypothesis, experiments were conducted consisting of targeted lentiviral-mediated overexpression of microRNA-7a-5p and downregulation of microRNA-665 in the VMH. Hyperinsulinemic hypoglycemic clamp experiments demonstrated that targeted overexpression of microRNA-7a-5p (but not downregulation of microRNA-665) in the VMH of RH rats restored the epinephrine response to hypoglycemia. This restored response to hypoglycemia was associated with a restoration of GABAA receptor gene expression. Finally, a direct interaction of microRNA-7a-5p with 3’-UTR of GABAA receptor α1-subunit (Gabra1) gene was demonstrated in a luciferase assay. These findings indicate that 1) the impaired sympathoadrenal response induced by RH is associated with changes in VMH microRNA expression, and 2) microRNA-7a-5p, possibly via direct downregulation of GABA receptor gene expression, may serve as a mediator of the altered sympathoadrenal response to hypoglycemia.

2019-10-17 | GSE138472 | GEO

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