Blood-brain barrier dysfunction in mice induced by lipopolysaccharide is attenuated by dapsone

  • Ting Zhou
  • , Lei Zhao
  • , Rui Zhan
  • , Qihua He
  • , Yawei Tong
  • , Xiaosheng Tian
  • , Hecheng Wang
  • , Tao Zhang
  • , Yaoyun Fu
  • , Yang Sun
  • , Feng Xu
  • , Xiangyang Guo
  • , Dongsheng Fan
  • , Hongbin Han
  • , Dehua Chui

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Blood-brain barrier (BBB) dysfunction is a key event in the development of many central nervous system (CNS) diseases, such as septic encephalopathy and stroke. 4,4′-Diaminodiphenylsulfone (DDS, Dapsone) has displayed neuroprotective effect, but whether DDS has protective role on BBB integrity is not clear. This study was designed to examine the effect of DDS on lipopolysaccharide (LPS)-induced BBB disruption and oxidative stress in brain vessels. Using in vivo multiphoton imaging, we found that DDS administration significantly restored BBB integrity compromised by LPS. DDS also increased the expression of tight junction proteins occludin, zona occludens-1 (ZO-1) and claudin-5 in brain vessels. Level of reactive oxygen species (ROS) was reduced by DDS treatment, which may due to decreased nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity and NOX2 expression. Our results showed that LPS-induced BBB dysfunction could be attenuated by DDS, indicated that DDS has a therapeutic potential for treating CNS infection and other BBB related diseases.

Original languageEnglish
Pages (from-to)419-424
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume453
Issue number3
DOIs
StatePublished - 24 Oct 2014
Externally publishedYes

Keywords

  • Blood-brain barrier integrity
  • Dapsone
  • Lipopolysaccharide

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