A possible role of histone-like DNA-binding protein of Streptococcus intermedius in the pathogenesis of bile duct damage in primary biliary cirrhosis

Bacterial infection has become a focus of attention in the pathogenesis of primary biliary cirrhosis (PBC). It was reported that anti-histone autoantibody was detected in PBC, suggesting that bacterial histone-like DNA-binding protein (HLP) may be involved in the pathogenesis of PBC. To identify bac...

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Veröffentlicht in:Clinical immunology (Orlando, Fla.). - 1999. - 127(2008), 2 vom: 15. Mai, Seite 245-51
1. Verfasser: Haruta, Ikuko (VerfasserIn)
Weitere Verfasser: Kikuchi, Ken, Hashimoto, Etsuko, Kato, Hidehito, Hirota, Katsuhiko, Kobayashi, Makio, Miyake, Yoichiro, Uchiyama, Takehiko, Yagi, Junji, Shiratori, Keiko
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Clinical immunology (Orlando, Fla.)
Schlagworte:Journal Article Antibodies, Bacterial DNA-Binding Proteins
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520 |a Bacterial infection has become a focus of attention in the pathogenesis of primary biliary cirrhosis (PBC). It was reported that anti-histone autoantibody was detected in PBC, suggesting that bacterial histone-like DNA-binding protein (HLP) may be involved in the pathogenesis of PBC. To identify bacterial species in PBC to confirm this possibility, serum reactivity to bacterial cells was studied by ELISA. The IgM class Streptococcus intermedius titers were significantly higher in PBC than chronic hepatitis due to hepatitis C virus (CH-C) and healthy subjects. Among the streptococci, S. intermedius was selected for further study. The antigenic peptide of S. intermedius of HLP was synthesized to examine the serum reactivity to Si-HLP. IgM class anti-Si-HLP peptide titers were significantly higher in PBC. Immunoreactivity to anti-Si-HLP was detected in the cytoplasm of biliary epithelial cells and inflammatory cells in the portal area in PBC patients' livers. Streptococci, especially S. intermedius, might play a key role in the pathogenesis of PBC, possibly involving HLP 
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700 1 |a Kikuchi, Ken  |e verfasserin  |4 aut 
700 1 |a Hashimoto, Etsuko  |e verfasserin  |4 aut 
700 1 |a Kato, Hidehito  |e verfasserin  |4 aut 
700 1 |a Hirota, Katsuhiko  |e verfasserin  |4 aut 
700 1 |a Kobayashi, Makio  |e verfasserin  |4 aut 
700 1 |a Miyake, Yoichiro  |e verfasserin  |4 aut 
700 1 |a Uchiyama, Takehiko  |e verfasserin  |4 aut 
700 1 |a Yagi, Junji  |e verfasserin  |4 aut 
700 1 |a Shiratori, Keiko  |e verfasserin  |4 aut 
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