ArticleCell research2024
A GABAergic system in atrioventricular node pacemaker cells controls electrical conduction between the atria and ventricles.
Article in Cell research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Heme oxygenase/carbon monoxide system and cardiac conduction system.Medical gas research · 2026Review
- Lactobacillus plantarum 1-2-3 Ameliorates the Corticosterone-Induced Fatty Liver Hemorrhagic Syndrome in Laying Hens by Biosynthesizing Gamma-Aminobutyric Acid.Probiotics and antimicrobial proteins · 2026Article
- Cardiac endogenous transmitter system: molecular features, functions, and clinical implications.European heart journal · 2026Review
- An Elusive Case of Transient 6:1 High-Grade Atrioventricular Block Despite Normal Initial Testing.Cureus · 2025Article
- Article
- An optimized Langendorff-free isolating method and electrophysiology studies for adult mouse atrioventricular node cells.BMC cardiovascular disorders · 2025Article
- Exploration of Key Genes and Molecular Mechanisms in Mice with Perioperative Neurocognitive Disorders Treated with Remimazolam Based on Transcriptomics and Experimental Verification.Drug design, development and therapy · 2025Article
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
Physiologically, the atria contract first, followed by the ventricles, which is the prerequisite for normal blood circulation. The above phenomenon of atrioventricular sequential contraction results from the characteristically slow conduction of electrical excitation of the atrioventricular node (AVN) between the atria and the ventricles. However, it is not clear what controls the conduction of electrical excitation within AVNs. Here, we find that AVN pacemaker cells (AVNPCs) possess an intact intrinsic GABAergic system, which plays a key role in electrical conduction from the atria to the ventricles. First, along with the discovery of abundant GABA-containing vesicles under the surface membranes of AVNPCs, key elements of the GABAergic system, including GABA metabolic enzymes, GABA receptors, and GABA transporters, were identified in AVNPCs. Second, GABA synchronously elicited GABA-gated currents in AVNPCs, which significantly weakened the excitability of AVNPCs. Third, the key molecular elements of the GABAergic system markedly modulated the conductivity of electrical excitation in the AVN. Fourth, GABA
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