Propofol at Clinically Relevant Concentrations Increases Neuronal Differentiation But Is Not Toxic to Hippocampal Neural Precursor Cells In Vitro

Propofol in the early postnatal period has been shown to cause brain cell death. One proposed mechanism for cognitive dysfunction after anesthesia is alteration of neural stem cell function and neurogenesis. We examined the effect of propofol on neural precursor or stem cells (NPCs) grown in vitro....

Full description

Saved in:
Bibliographic Details
Published in:Anesthesiology (Philadelphia) 2012-11, Vol.117 (5), p.1080-1090
Main Authors: SALL, Jeffrey W, STRATMANN, Greg, LEONG, Jason, WOODWARD, Elliott, BICKLER, Philip E
Format: Article
Language:English
Subjects:
Anesthesia
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Animals
Animals, Newborn
Biological and medical sciences
Cell Differentiation - drug effects
Cell Differentiation - physiology
Cells, Cultured
Dose-Response Relationship, Drug
Hippocampus - cytology
Hippocampus - drug effects
Hippocampus - growth & development
Medical sciences
Neural Stem Cells - drug effects
Neural Stem Cells - physiology
Neurogenesis - drug effects
Neurogenesis - physiology
Neurons - cytology
Neurons - drug effects
Neurons - physiology
Propofol - pharmacology
Propofol - toxicity
Rats
Rats, Sprague-Dawley
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Propofol in the early postnatal period has been shown to cause brain cell death. One proposed mechanism for cognitive dysfunction after anesthesia is alteration of neural stem cell function and neurogenesis. We examined the effect of propofol on neural precursor or stem cells (NPCs) grown in vitro. Hippocampal-derived NPCs from postnatal day 2 rats were exposed to propofol or Diprivan. NPCs were then analyzed for bromodeoxyuridine incorporation to measure proliferation. Cell death was measured by lactate dehydrogenase release. Immunocytochemistry was used to evaluate the expression of neuronal and glial markers in differentiating NPCs exposed to propofol. Propofol dose dependently increases the release of lactate dehydrogenase from NPCs under both proliferating and differentiating conditions at supraclinical concentrations (more than 7.1 µM). Both Diprivan and propofol had the same effect on NPCs. Propofol-mediated release of lactate dehydrogenase is not inhibited by blocking the γ-aminobutyric acid type A receptor or extracellular calcium influx and is not mediated by caspase-3/7. Direct γ-aminobutyric acid type A receptor activation did not have the same effect. In differentiating NPCs, 6 h of propofol at 2.1 µM increased the number neurons but not glial cells 4 days later. Increased neuronal differentiation was not blocked by bicuculline. Only supraclinical concentrations of propofol or Diprivan kill NPCs in culture by a non-γ-aminobutyric acid type A, noncaspase-3 mechanism. Clinically relevant doses of propofol increase neuronal fate choice by a non-γ-aminobutyric acid type A mechanism.
ISSN:0003-3022
1528-1175
DOI:10.1097/ALN.0b013e31826f8d86