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Estrous cycle regulation of the transcriptional landscape of basolateral amygdala cell types

ABSTRACT: Single-nucleus RNA-sequencing data from adult female proestrus, adult female diestrus, and male C57Bl/6J mouse brain basolateral amygdala.

ORGANISM(S): Mus musculus

PROVIDER: GSE335011 | GEO | 2026/06/10

REPOSITORIES: GEO

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			Action	DRS
		Other
	GSE335011_RAW.tar	Raw
	GSE335011_README_bla_snseq_processed_data.txt	Txt
	GSE335011_allen_mapmycells_bla_combined_gex.csv.gz	Csv
	GSE335011_processed_clustered_annotated_bla_combined_gex.h5ad	Other

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Discrete and continuous heterogeneity in the basolateral amygdala

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Project description:Alcohol affects gene expression in several brain regions. The amygdala is a key structure in the brainâs emotional system and in recent years the crucial importance of the amygdala in drug-seeking and relapse has been increasingly recognized. In this study gene expression screening was used to identify genes involved in alcoholism in the human basolateral amygdala. The results show that alcoholism affects a broad range of genes and many systems including genes involved in synaptic transmission, neurotransmitter transport, structural plasticity, metabolism, energy production, transcription and RNA processing and the circadian cycle. In particular, genes involved in the glutamate system were affected in the alcoholic patients. In the amygdala the glutamate system is involved in the acquisition, consolidation, expression and extinction of associative learning, which is a vital part of addiction, and in alcohol abusers it is associated with withdrawal anxiety and neurodegeneration. Downregulation of the excitatory amino acid transporters GLAST, GLT-1 and the AMPA glutamate receptor 2 (GluR2) revealed by the microarray were confirmed by Western blots. The decreased expression of GLAST, GLT-1 and GluR2 in the alcoholic patients may increase glutamate tone and activity in the basolateral amygdala and this may contribute to neurodegeneration as well as the expression of associative memories and anxiety which underlie continued drug-seeking and chronic relapse. Two-condition experiment, alcoholics vs controls. Biological replicates: 6 alcoholics 6 controls, one replicate per array.

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THE EFFECTS OF ALCOHOLISM ON THE HUMAN BASOLATERAL AMYGDALA

Project description:Alcohol affects gene expression in several brain regions. The amygdala is a key structure in the brain’s emotional system and in recent years the crucial importance of the amygdala in drug-seeking and relapse has been increasingly recognized. In this study gene expression screening was used to identify genes involved in alcoholism in the human basolateral amygdala. The results show that alcoholism affects a broad range of genes and many systems including genes involved in synaptic transmission, neurotransmitter transport, structural plasticity, metabolism, energy production, transcription and RNA processing and the circadian cycle. In particular, genes involved in the glutamate system were affected in the alcoholic patients. In the amygdala the glutamate system is involved in the acquisition, consolidation, expression and extinction of associative learning, which is a vital part of addiction, and in alcohol abusers it is associated with withdrawal anxiety and neurodegeneration. Downregulation of the excitatory amino acid transporters GLAST, GLT-1 and the AMPA glutamate receptor 2 (GluR2) revealed by the microarray were confirmed by Western blots. The decreased expression of GLAST, GLT-1 and GluR2 in the alcoholic patients may increase glutamate tone and activity in the basolateral amygdala and this may contribute to neurodegeneration as well as the expression of associative memories and anxiety which underlie continued drug-seeking and chronic relapse.

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