Penicillin-induced epileptiform activity in the hippocampal in vitro prepatation.

Abstract:

:An in vitro preparation has been developed in which epileptogenesis in mammalian central nervous system tissue may be studied. Addition of sodium penicillin to the medium bathing slices of guinea pig hippocampus induced epileptiform activity similar to that seen in hippocampal penicillin foci in vivo. Epileptiform events were recorded as synchronous field potentials and correlated cellular bursts that occurred spontaneously and could be triggered by orthodromic stimulation. Intracellular recordings revealed that bursts were generated from large depolarization shifts in some neurons, while in others, burst discharges had little underlying baseline depolarization. This finding, and the presence of fast prepotentials in penicillin-treated preparations, suggested the involvement of dendritic activity in generation of epileptiform discharges.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Schwartzkroin PA,Prince DA

doi

10.1002/ana.410010510

subject

Has Abstract

pub_date

1977-05-01 00:00:00

pages

463-9

issue

5

eissn

0364-5134

issn

1531-8249

journal_volume

1

pub_type

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