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Related Concept Videos

Antiepileptic Drugs: Glutamate Antagonists01:14

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Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...
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Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

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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.
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Antiepileptic Drugs: Potassium Channel Activators01:20

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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.
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Electron Transport Chain: Complex I and II01:46

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Antiepileptic Drugs: Sodium Channel Blockers01:08

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Tridecanoin is anticonvulsant, antioxidant, and improves mitochondrial function.

Kah Ni Tan1, Catalina Carrasco-Pozo1,2, Tanya S McDonald1

  • 11 Department of Pharmacology, School of Biomedical Sciences, The University of Queensland, St. Lucia, Australia.

Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism
|July 16, 2016
PubMed
Summary

Chronic feeding of tridecanoin, a medium-chain triglyceride, demonstrated reproducible anticonvulsant effects in mice. This dietary intervention improved mitochondrial function and antioxidant capacity without increasing ketone bodies.

Keywords:
Antioxidantanti-seizuredecanoatemitochondrial functionoctanoate

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Metabolism

Background:

  • The ketogenic diet is known for its anticonvulsant properties.
  • Medium-chain triglycerides (MCTs) are metabolized differently than long-chain fatty acids.
  • Investigating specific MCTs for therapeutic potential is warranted.

Purpose of the Study:

  • To test the anticonvulsant hypothesis of chronic octanoate (trioctanoin) and decanoate (tridecanoin) triglyceride feeding.
  • To explore the underlying mechanisms of action for any observed anticonvulsant effects.

Main Methods:

  • Mice were fed diets with 35% calories from trioctanoin or tridecanoin.
  • Anticonvulsant effects were assessed in acute seizure models.
  • Biochemical analyses included plasma and brain fatty acid levels, beta-hydroxybutyrate, glycolytic enzyme activity, and astrocyte/mitochondrial respiration.
  • Gene expression (heme oxygenase 1, FoxO1) and plasma antioxidant capacity were measured.

Main Results:

  • Chronic tridecanoin feeding, but not trioctanoin, was reproducibly anticonvulsant in mouse seizure models.
  • Neither treatment significantly increased plasma or brain beta-hydroxybutyrate levels.
  • Tridecanoin improved mitochondrial respiration and ATP synthesis in hippocampal mitochondria.
  • Decanoic acid increased mitochondrial proton leak in astrocytes, potentially reducing oxidative stress.
  • Tridecanoin increased plasma antioxidant capacity and hippocampal heme oxygenase 1 and FoxO1 mRNA levels.

Conclusions:

  • Tridecanoin exhibits reproducible anticonvulsant properties in mice.
  • The anticonvulsant effect is not mediated by increased ketogenesis or altered glycolysis.
  • Tridecanoin may exert its effects by enhancing mitochondrial function and antioxidant defenses.