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BMC Anesthesiology
Published in: BMC Anesthesiology 1/2017

Open Access 01-12-2017 | Research article

Hydrogen sulfide attenuates isoflurane-induced neuroapoptosis and cognitive impairment in the developing rat brain

Authors: Xueyuan Hu, Li Luan, Wei Guan, Shuai Zhang, Bei Li, Wei Ji, Honggang Fan

Published in: BMC Anesthesiology | Issue 1/2017

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Abstract

Background

Isoflurane-induced neuroapoptosis and cognitive impairment has been previously reported. Hydrogen sulfide (H2S) has been shown to be a neuromodulator that is thought to have anti-apoptotic, anti-inflammatory, and anti-oxidative benefits. However, it is not known if H2S is protective against anesthesia-induced apoptosis and cognitive defects.

Methods

In this study, postnatal day 7 (P7) Sprague-Dawley rats were randomly divided into four groups: control group (normal saline), H2S group (NaHS 28 μM/kg), isoflurane group (normal saline +0.75% isoflurane) and H2S preconditioning group (NaHS 28 μM/kg + 0.75% isoflurane). After exposure to isoflurane for 6 h, half the numbers of rats in each group were euthanized, and the hippocampus and cerebral cortex were dissected and examined for apoptosis by the terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) technique and western blot. After 6 weeks, the remaining rats were subjected to a Morris water maze (MWM) test for behavioral assessment.

Results

The TUNEL assay and western blot showed that when rats were preconditioned with NaHS, neuroapoptosis decreased significantly both in hippocampus and cerebral cortex compering with the isofulrane group. The MWM showed that P7 rats administration of NaHS improved cognitive impairments induced by isoflurane.

Conclusions

The current study demonstrates that H2S attenuates isoflurane-induced neuroapoptosis and improves cognitive impairments in the developing rat brain.
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Metadata
Title
Hydrogen sulfide attenuates isoflurane-induced neuroapoptosis and cognitive impairment in the developing rat brain
Authors
Xueyuan Hu
Li Luan
Wei Guan
Shuai Zhang
Bei Li
Wei Ji
Honggang Fan
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Anesthesiology / Issue 1/2017
Electronic ISSN: 1471-2253
DOI
https://doi.org/10.1186/s12871-017-0419-y

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