A pyridinium derivative from Red Sea soft corals inhibited voltage-activated potassium conductances and increased excitability of rat cultured sensory neurones
2006

Effects of Coral Extracts on Nerve Cells

Sample size: 35 publication Evidence: moderate

Author Information

Author(s): Temraz Tarek A, Houssen Wael E, Jaspars Marcel, Woolley David R, Wease Kerrie N, Davies Steven N, Scott Roderick H

Primary Institution: Marine Science Department, Suez Canal University, Ismailia, Egypt

Hypothesis

The study aims to identify compounds from Red Sea soft corals that alter the excitability of dorsal root ganglion neurones.

Conclusion

Natural products from Sarcophyton glaucum and Lobophyton crassum increase the excitability of DRG neurones, potentially contributing to chemical defenses.

Supporting Evidence

  • Crude extracts from Sarcophyton glaucum and Lobophyton crassum increased action potential firing in DRG neurones.
  • 3-carboxy-1-methyl pyridinium was identified as an active component that enhances excitability.
  • Both crude extracts inhibited voltage-activated K+ currents in cultured DRG neurones.

Takeaway

Scientists found that certain substances from soft corals can make nerve cells more active, which might help the corals protect themselves from predators.

Methodology

Whole cell patch clamp recording and intracellular Ca2+ imaging were used on rat cultured dorsal root ganglion neurones.

Limitations

The study did not assess the selectivity of the active compound for different K+ channel sub-types.

Participant Demographics

Rat cultured dorsal root ganglion neurones were used in the study.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1471-2210-6-10

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