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The effects of baclofen and pertussis toxin on epileptiform activity induced in the hippocampal slice by magnesium depletion.

Publication ,  Journal Article
Lewis, DV; Jones, LS; Swartzwelder, HS
Published in: Epilepsy Res
1989

Bathing hippocampal slices in artificial cerebrospinal fluid without magnesium elicits repetitive, long ictal-like discharges termed ictaform events. The ictaform events are separated by interictal periods that are initially silent with no interictal bursts. Interictal bursts appear in the later part of the interictal periods and intensify just before the next ictaform event. The GABAB agonist, baclofen, entirely suppressed interictal bursts during the interictal periods and produced a dose-dependent prolongation of the interictal period. Conversely, in slices pretreated with pertussis toxin to reduce the GABAB neurotransmission, interictal bursts were greatly increased, often occupying the entire interictal period, although the total duration of the interictal periods was not affected. Pertussis toxin pretreatment also lengthened the ictaform events. These opposing effects of baclofen and pertussis toxin suggest that GABAB neuro-transmission is important in regulating both the occurrence of interictal bursts in the interictal period, as well as the duration of ictaform events in the low magnesium model of epileptiform activity.

Duke Scholars

Published In

Epilepsy Res

DOI

ISSN

0920-1211

Publication Date

1989

Volume

4

Issue

2

Start / End Page

109 / 118

Location

Netherlands

Related Subject Headings

  • gamma-Aminobutyric Acid
  • Virulence Factors, Bordetella
  • Rats, Inbred Strains
  • Rats
  • Pertussis Toxin
  • Neurology & Neurosurgery
  • Male
  • Magnesium
  • In Vitro Techniques
  • Hippocampus
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lewis, D. V., Jones, L. S., & Swartzwelder, H. S. (1989). The effects of baclofen and pertussis toxin on epileptiform activity induced in the hippocampal slice by magnesium depletion. Epilepsy Res, 4(2), 109–118. https://doi.org/10.1016/0920-1211(89)90015-6
Lewis, D. V., L. S. Jones, and H. S. Swartzwelder. “The effects of baclofen and pertussis toxin on epileptiform activity induced in the hippocampal slice by magnesium depletion.Epilepsy Res 4, no. 2 (1989): 109–18. https://doi.org/10.1016/0920-1211(89)90015-6.
Lewis, D. V., et al. “The effects of baclofen and pertussis toxin on epileptiform activity induced in the hippocampal slice by magnesium depletion.Epilepsy Res, vol. 4, no. 2, 1989, pp. 109–18. Pubmed, doi:10.1016/0920-1211(89)90015-6.
Journal cover image

Published In

Epilepsy Res

DOI

ISSN

0920-1211

Publication Date

1989

Volume

4

Issue

2

Start / End Page

109 / 118

Location

Netherlands

Related Subject Headings

  • gamma-Aminobutyric Acid
  • Virulence Factors, Bordetella
  • Rats, Inbred Strains
  • Rats
  • Pertussis Toxin
  • Neurology & Neurosurgery
  • Male
  • Magnesium
  • In Vitro Techniques
  • Hippocampus