title: Decreased connexin 43 in astrocytes inhibits the neuroinflammatory reaction in an acute mouse model of neonatal sepsis.
abstract: Neonatal sepsis is common in neonatal intensive care units, often complicated by injury to the immature brain. Previous studies have shown that the expression of the gap junction protein connexin 43 (Cx43) in the brain decreases when stimulated by neuro-inflammatory drugs such as lipopolysaccharide (LPS). Here we showed that partial deletion of Cx43 in astrocytes resulted in weakened inflammatory responses. The up-regulation of pro-inflammatory cytokines was significantly reduced in mice with partial deletion of Cx43 in astrocytes compared with wild-type littermates after systemic LPS injection. Moreover, microglial activation was inhibited in mice with partial deletion of Cx43. These results showed that Cx43 in astrocytes plays a critical role in neuro-inflammatory responses. This work provides a potential therapeutic target for inhibiting neuro-inflammatory responses in neonatal sepsis.
authors.affiliation: Department of Neonatology, Children's Hospital of Fudan University, Shanghai, 201102, China.
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Zhou
authors.affiliation: Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Cheng
authors.affiliation: Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
authors.forename: Zilong
authors.initials: Z
authors.lastname: Qiu
authors.affiliation: Department of Neonatology, Children's Hospital of Fudan University, Shanghai, 201102, China.
authors.forename: Wen-Hao
authors.initials: WH
authors.lastname: Zhou
authors.affiliation: Department of Neonatology, Children's Hospital of Fudan University, Shanghai, 201102, China. gqchengcm@sina.com.
authors.forename: Guo-Qiang
authors.initials: GQ
authors.lastname: Cheng
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001253:Astrocytes / Q000378:metabolism* / Q000473:pathology; D015153:Blotting, Western; D001921:Brain / Q000378:metabolism* / Q000473:pathology; D018031:Connexin 43 / Q000378:metabolism*; D004195:Disease Models, Animal; D008070:Lipopolysaccharides / Q000633:toxicity; D051379:Mice; D008822:Mice, Transgenic; D016133:Polymerase Chain Reaction; D018805:Sepsis / Q000378:metabolism* / Q000473:pathology
chemical_list: D018031:Connexin 43; C543076:GJA1 protein, mouse; D008070:Lipopolysaccharides
keywords: Cx43; astrocyte; gap junction; neonatal sepsis