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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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Prodrugs01:30

Prodrugs

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Prodrugs are a class of pharmaceutical compounds that undergo a biotransformation process within the body to be converted into a pharmacologically active drug. Prodrugs are designed to improve the therapeutic properties of the parent drug, such as enhancing bioavailability, increasing stability, or reducing toxicity. The concept of prodrugs revolves around modifying the chemical structure of the original drug to make it more effective or convenient for administration.
Prodrugs help overcome...
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Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

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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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Antiepileptic Drugs: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

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Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
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Direct-Acting Cholinergic Agonists: Pharmacokinetics01:31

Direct-Acting Cholinergic Agonists: Pharmacokinetics

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Direct-acting cholinergic agonists, such as synthetic choline esters and naturally occurring alkaloids, exert their effects by enhancing the actions of acetylcholine and stimulating the parasympathetic nervous system. Synthetic choline esters share structural similarities with acetylcholine. For example, they have a positively charged quaternary ammonium or onium group, contributing to their hydrophilic characteristics. As a result, they are poorly absorbed in the body through oral...
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Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship01:29

Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

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Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
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Related Experiment Video

Updated: May 5, 2026

Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission

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Phosphorus GABA Analogues as Potential Prodrugs.

L A Cates1, M S Rashed

  • 1Department of Medicinal Chemistry, College of Pharmacy, University of Houston, University Park, Houston, Texas, 77004.

Pharmaceutical Research
|November 27, 2013
PubMed
Summary

Researchers synthesized novel gamma-aminobutyric acid (GABA) analogues as Schiff bases for drug delivery. These compounds showed moderate anticonvulsant activity against electroshock-induced seizures in mice.

Area of Science:

  • Medicinal Chemistry
  • Neuroscience
  • Organic Synthesis

Background:

  • Gamma-aminobutyric acid (GABA) is a primary inhibitory neurotransmitter in the central nervous system.
  • Developing novel drug delivery systems is crucial for enhancing therapeutic efficacy and reducing side effects.
  • Acid-labile carrier molecules offer potential for targeted drug release.

Purpose of the Study:

  • To synthesize novel GABA analogues incorporated into Schiff bases.
  • To evaluate the in vitro hydrolysis and acid-labile properties of these Schiff bases.
  • To assess the anticonvulsant activity of the synthesized compounds in mouse seizure models.

Main Methods:

  • Synthesis of 3-aminophenylphosphonic acid derivatives and a benzophenone derivative of GABA.

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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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Electrophoretic Delivery of γ-aminobutyric Acid GABA into Epileptic Focus Prevents Seizures in Mice
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Related Experiment Videos

Last Updated: May 5, 2026

Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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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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Electrophoretic Delivery of γ-aminobutyric Acid GABA into Epileptic Focus Prevents Seizures in Mice
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  • Formation of Schiff bases by incorporating these analogues.
  • In vitro hydrolysis studies of Schiff bases to determine C=N bond lability.
  • Anticonvulsant activity testing using maximal electroshock and pentylenetetrazol-induced seizures in mice.

    • Main Results:

    • Four Schiff bases were synthesized, including novel phosphonodiamide derivatives.
    • Hydrolysis studies revealed that ring substituents influence the lability of the C=N bond.
    • Anticonvulsant activity was observed only in the maximal electroshock seizure model.
    • Moderate inhibition of seizures was demonstrated by specific dimethyl ester and GABA Schiff base derivatives.

    Conclusions:

    • Novel GABA analogues integrated into Schiff bases show potential as acid-labile carriers.
    • The electronic properties of substituents significantly impact the hydrolysis rate of the Schiff base linkage.
    • These compounds exhibit moderate anticonvulsant properties, warranting further investigation for epilepsy treatment.