At clinically relevant concentrations the anaesthetic/amnesic thiopental but not the anticonvulsant phenobarbital interferes with hippocampal sharp wave-ripple complexes
2007

Effects of Thiopental and Phenobarbital on Hippocampal Activity

Sample size: 48 publication Evidence: moderate

Author Information

Author(s): Papatheodoropoulos Costas, Sotiriou Evangelos, Kotzadimitriou Dimitrios, Drimala Panagiota

Primary Institution: University of Patras, Greece

Hypothesis

Thiopental interferes with hippocampal sharp wave-ripple complexes, affecting memory processes.

Conclusion

Thiopental significantly reduces the incidence and rhythmicity of hippocampal sharp wave-ripple complexes, while phenobarbital has minimal effects.

Supporting Evidence

  • Thiopental significantly reduced the quantity of ripple oscillation by 20 ± 5%.
  • At 50 μM, thiopental suppressed the rhythmicity of SPWs by 43 ± 15%.
  • Phenobarbital significantly accelerated SPWs at 50 and 100 μM.

Takeaway

Thiopental can mess with how our brain processes memories by changing brain wave patterns, while phenobarbital doesn't have much effect.

Methodology

In vitro model of hippocampal slices was used to study the effects of thiopental and phenobarbital on sharp wave-ripple activity.

Limitations

The study was conducted in vitro, which may not fully replicate in vivo conditions.

Participant Demographics

Male Wistar rats, 4–10 weeks old.

Statistical Information

P-Value

P < 0.01

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1471-2202-8-60

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