Isoflurane-induced neuronal degeneration: an evaluation in organotypic hippocampal slice cultures.

Published

Journal Article

Prolonged exposure of postnatal day (PND) 7 rat pups to anesthetics, which act via N-methyl-D-aspartate antagonism and/or gamma-amino butyric acid enhancement, causes neurodegeneration and persistent behavioral deficits. We studied these findings in vitro and determined whether the age of rat pups used for study or duration of anesthetic exposure modulates resultant neurodegeneration. Organotypic hippocampal slices (OHSs) were prepared from rat pups on PNDs 4, 7, and 14 and cultured 7 or 14 days in vitro. The slices were exposed to 1.5% isoflurane or fresh gas for durations of 1, 3, or 5 h. Hippocampal CA1, CA3, and dentate gyrus neuronal survival was assessed 3 days later. Neuronal cell death was greatest in OHSs prepared from PND 7 rat pups (P < 0.001) and was most evident after 5 h exposure to isoflurane (P < 0.001). By eliminating variables such as hemodynamics, nutrition, oxygenation, and carbon dioxide elimination, this in vitro investigation supports both an age- and duration-dependent relationship between 1.5% isoflurane exposure and perinatal neuronal death.

Full Text

Duke Authors

Cited Authors

  • Wise-Faberowski, L; Zhang, H; Ing, R; Pearlstein, RD; Warner, DS

Published Date

  • September 2005

Published In

Volume / Issue

  • 101 / 3

Start / End Page

  • 651 - 657

PubMed ID

  • 16115969

Pubmed Central ID

  • 16115969

International Standard Serial Number (ISSN)

  • 0003-2999

Digital Object Identifier (DOI)

  • 10.1213/01.ane.0000167382.79889.7c

Language

  • eng

Conference Location

  • United States