Journal
MOLECULAR MEDICINE REPORTS
Volume 6, Issue 3, Pages 543-546Publisher
SPANDIDOS PUBL LTD
DOI: 10.3892/mmr.2012.976
Keywords
sevoflurane; neuronal nitric oxide synthase; apoptosis; hematoxylin and eosin staining
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Funding
- National Science Foundation Council of China [31140050]
- Guangdong Science Foundations [2010B031600037]
- Guangdong Science and Technology Planning Project [2010B031600207, 2011B050400024]
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A growing number of studies have shown that commonly used anesthetic agents may cause neurohistopathological changes and persistent behavioral impairments in the developing brain. The effects of sevoflurane, a widely used substance in pediatric anesthesia, on the developing brain have not been thoroughly analyzed thus far. In this study, Sprague-Dawley rats at postnatal day (P)7 were exposed to 2.3% sevoflurane for 6 h continuously. Six hours after exposure, hematoxylin and eosin (H&E) staining was used to determine the morphological changes in the hippocampus. The expression levels of neuronal nitric oxide synthase (nNOS) and caspase-3 in the hippocampus of the pups were determined by immunofluorescence. A single 6-h sevoflurane exposure at P7 caused morphological changes in the hippocampus. Sevoflurane also significantly increased the expression of cleaved caspase-3 and reduced the expression of the nNOS protein. These results indicate that neonatal exposure to sevoflurane causes neurohistopathological changes, apoptosis and decreases nNOS protein levels in the rat hippocampus.
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