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Related Concept Videos

Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

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γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for...
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Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

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The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
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Activation and Inactivation of G Proteins01:22

Activation and Inactivation of G Proteins

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Heterotrimeric G proteins are guanine nucleotide-binding proteins. As the name suggests, heterotrimeric G proteins are composed of three subunits: alpha, beta, and gamma. They remain GDP-bound or GTP-bound inside the cells and switch between inactive/active states. The Gα subunit possesses the nucleotide-binding pocket that binds guanine nucleotides and switches between GDP or GTP-bound states. In contrast, the Gꞵ and Gγ subunits are always bound together with high...
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Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

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Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
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G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

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GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
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G Protein-coupled Receptors01:15

G Protein-coupled Receptors

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G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
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Related Experiment Video

Updated: Apr 18, 2026

Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors
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Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors

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Diversity in GABAergic signaling.

Kaspar Vogt1

  • 1International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan.

Advances in Pharmacology (San Diego, Calif.)
|February 1, 2015
PubMed
Summary

Gamma-aminobutyric acid type A (GABA(A)) receptors offer diverse signaling beyond inhibition. Their variable ion signaling mechanisms contribute to brain development and function.

Keywords:
ChlorideCircadianDepolarizationDevelopmentGABAGABA(A) receptorHyperpolarizationImagingInhibitionKCC2NKCC1NeuronPatch-clampPerforated patchSubcellular

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Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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Whole-cell Currents Induced by Puff Application of GABA in Brain Slices
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Last Updated: Apr 18, 2026

Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors
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Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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Whole-cell Currents Induced by Puff Application of GABA in Brain Slices
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Area of Science:

  • Neuroscience
  • Cellular Neuroscience
  • Synaptic Transmission

Background:

  • Gamma-aminobutyric acid type A (GABA(A)) receptors mediate inhibitory neurotransmission in the brain.
  • Recent research reveals GABA(A) receptors have diverse functions beyond simple inhibition.
  • This functional diversity arises from various interneuron classes and receptor subtypes.

Purpose of the Study:

  • To explore the role of variable ion signaling mechanisms in GABA(A) receptor signaling diversity.
  • To understand how this signaling variability contributes to brain development and function.

Main Methods:

  • This review focuses on the ion signaling mechanisms of GABA(A) receptors.
  • It integrates findings on interneuron classes and receptor subtypes.

Main Results:

  • GABA(A) receptor signaling exhibits heterogeneity from multiple sources, including ion flux.
  • Variable ion signaling contributes significantly to the diverse effects of GABAergic transmission.
  • This heterogeneity is crucial for proper brain development and function.

Conclusions:

  • The ion signaling variability of GABA(A) receptors is a key factor in GABAergic signaling diversity.
  • Understanding this variability is essential for comprehending brain function and development.