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Article: Differential effects of propofol and dexmedetomidine on neuroinflammation induced by systemic endotoxin lipopolysaccharides in adult mice

TitleDifferential effects of propofol and dexmedetomidine on neuroinflammation induced by systemic endotoxin lipopolysaccharides in adult mice
Authors
KeywordsCognitive dysfunction
Neuroinflammation
Propofol
Dexmedetomidine
Oxidative stress
Issue Date2019
PublisherElsevier Ireland Ltd. The Journal's web site is located at http://www.elsevier.com/locate/neulet
Citation
Neuroscience Letters, 2019, v. 707, p. article no. 134309 How to Cite?
AbstractPropofol and dexmedetomidine are commonly used in clinical situations where neuroinflammation may be imminent or even established but comparative data on their effects on neuroinflammatory and cognitive parameters are lacking. Using a murine model of neuroinflammation induced by systemic lipopolysaccharide (LPS), this study compared the effects of these two agents on cognitive function, neuroinflammatory parameters, oxidative stress and neurotransmission. Male adult C57BL/6 N mice were anaesthetised with propofol or dexmedetomidine prior to intraperitoneal injection of LPS. Cognitive and motor function were assessed by the Y-maze and Rotarod tests respectively. Inflammatory responses were evaluated by relative levels of cytokine mRNA and immunoreactivity of glia cells. LPS caused a marked elevation in IL-1β and TNF-α levels both peripherally and in the brain, together with microglia activation (p <  0.05) and cognitive impairment. These changes were accompanied by an increase in 8-hydroxy-2′-deoxyguanosine (8−OHdG) (p <  0.05). Dexmedetomidine attenuated microglia activation (p <  0.05) and the elevation in 8−OHdG level (p <  0.05). Propofol did not affect cognition. However, both drugs lowered the number of vesicular glutamate transporter 1 (VGLUT 1), but was associated with higher levels of apoptosis and 8−OHdG (p <  0.05). Data from this study suggest dexmedetomidine and propofol have different anti-neuroinflammatory and neuroprotective profiles. However, neither drug can fully attenuate the effects of LPS induced cognitive impairment.
Persistent Identifierhttp://hdl.handle.net/10722/274589
ISSN
2019 Impact Factor: 2.274
2015 SCImago Journal Rankings: 1.035

 

DC FieldValueLanguage
dc.contributor.authorHUANG, C-
dc.contributor.authorNg, OTW-
dc.contributor.authorChu, JMT-
dc.contributor.authorIrwin, MG-
dc.contributor.authorHu, X-
dc.contributor.authorZhu, S-
dc.contributor.authorChang, RCC-
dc.contributor.authorWong, GTC-
dc.date.accessioned2019-08-18T15:04:49Z-
dc.date.available2019-08-18T15:04:49Z-
dc.date.issued2019-
dc.identifier.citationNeuroscience Letters, 2019, v. 707, p. article no. 134309-
dc.identifier.issn0304-3940-
dc.identifier.urihttp://hdl.handle.net/10722/274589-
dc.description.abstractPropofol and dexmedetomidine are commonly used in clinical situations where neuroinflammation may be imminent or even established but comparative data on their effects on neuroinflammatory and cognitive parameters are lacking. Using a murine model of neuroinflammation induced by systemic lipopolysaccharide (LPS), this study compared the effects of these two agents on cognitive function, neuroinflammatory parameters, oxidative stress and neurotransmission. Male adult C57BL/6 N mice were anaesthetised with propofol or dexmedetomidine prior to intraperitoneal injection of LPS. Cognitive and motor function were assessed by the Y-maze and Rotarod tests respectively. Inflammatory responses were evaluated by relative levels of cytokine mRNA and immunoreactivity of glia cells. LPS caused a marked elevation in IL-1β and TNF-α levels both peripherally and in the brain, together with microglia activation (p <  0.05) and cognitive impairment. These changes were accompanied by an increase in 8-hydroxy-2′-deoxyguanosine (8−OHdG) (p <  0.05). Dexmedetomidine attenuated microglia activation (p <  0.05) and the elevation in 8−OHdG level (p <  0.05). Propofol did not affect cognition. However, both drugs lowered the number of vesicular glutamate transporter 1 (VGLUT 1), but was associated with higher levels of apoptosis and 8−OHdG (p <  0.05). Data from this study suggest dexmedetomidine and propofol have different anti-neuroinflammatory and neuroprotective profiles. However, neither drug can fully attenuate the effects of LPS induced cognitive impairment.-
dc.languageeng-
dc.publisherElsevier Ireland Ltd. The Journal's web site is located at http://www.elsevier.com/locate/neulet-
dc.relation.ispartofNeuroscience Letters-
dc.subjectCognitive dysfunction-
dc.subjectNeuroinflammation-
dc.subjectPropofol-
dc.subjectDexmedetomidine-
dc.subjectOxidative stress-
dc.titleDifferential effects of propofol and dexmedetomidine on neuroinflammation induced by systemic endotoxin lipopolysaccharides in adult mice-
dc.typeArticle-
dc.identifier.emailChu, JMT: jmtchu@hku.hk-
dc.identifier.emailIrwin, MG: mgirwin@hku.hk-
dc.identifier.emailChang, RCC: rccchang@hku.hk-
dc.identifier.emailWong, GTC: gordon@hku.hk-
dc.identifier.authorityIrwin, MG=rp00390-
dc.identifier.authorityChang, RCC=rp00470-
dc.identifier.authorityWong, GTC=rp00523-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.neulet.2019.134309-
dc.identifier.pmid31158431-
dc.identifier.scopuseid_2-s2.0-85066813487-
dc.identifier.hkuros302301-
dc.identifier.volume707-
dc.identifier.spagearticle no. 134309-
dc.identifier.epagearticle no. 134309-
dc.publisher.placeIreland-

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