Abstract
Helicobacter pylori is a Gram-negative bacterium that is recognized as one of the key factors in gastric diseases such as gastritis, peptic ulcer and gastric cancer. Recent studies have shown relationships between H. pylori and extra-digestive diseases, and the presence of H. pylori in the middle ear and upper respiratory tract has been reported. However, the role of H. pylori in middle ear disease remains unclear. The present study demonstrated that H. pylori whole-cell protein directly induces macrophage migration inhibitory factor, macrophage inflammatory protein 2, interleukin 1β and tumor necrosis factor α in middle ear epithelium in mice, and severe proliferation of inflammatory cells was observed in middle ear cavity inoculated with H. pylori whole-cell protein. In addition, trans-tympanic injection of macrophage migration inhibitory factor up-regulated expression of macrophage inflammatory protein 2 in the middle ear. These findings indicate that H. pylori infection causes immunological inflammation in middle ear epithelium, and H. pylori may play a significant role in otitis media.
| Original language | English |
|---|---|
| Pages (from-to) | 134-140 |
| Number of pages | 7 |
| Journal | Clinical and Experimental Immunology |
| Volume | 154 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Oct 2008 |
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Keywords
- Cytokine
- Helicobacter pylori
- Macrophage inflammatory protein 2
- Macrophage migration inhibitory factor
- Otitis media
ASJC Scopus subject areas
- Immunology
Cite this
Expression of inflammatory mediators in the otitis media induced by Helicobacter pylori antigen in mice. / Kariya, Shin; Okano, M.; Fukushima, K.; Nomiya, S.; Kataoka, Yuko; Nomiya, R.; Akagi, H.; Nishizaki, Kazunori.
In: Clinical and Experimental Immunology, Vol. 154, No. 1, 10.2008, p. 134-140.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expression of inflammatory mediators in the otitis media induced by Helicobacter pylori antigen in mice
AU - Kariya, Shin
AU - Okano, M.
AU - Fukushima, K.
AU - Nomiya, S.
AU - Kataoka, Yuko
AU - Nomiya, R.
AU - Akagi, H.
AU - Nishizaki, Kazunori
PY - 2008/10
Y1 - 2008/10
N2 - Helicobacter pylori is a Gram-negative bacterium that is recognized as one of the key factors in gastric diseases such as gastritis, peptic ulcer and gastric cancer. Recent studies have shown relationships between H. pylori and extra-digestive diseases, and the presence of H. pylori in the middle ear and upper respiratory tract has been reported. However, the role of H. pylori in middle ear disease remains unclear. The present study demonstrated that H. pylori whole-cell protein directly induces macrophage migration inhibitory factor, macrophage inflammatory protein 2, interleukin 1β and tumor necrosis factor α in middle ear epithelium in mice, and severe proliferation of inflammatory cells was observed in middle ear cavity inoculated with H. pylori whole-cell protein. In addition, trans-tympanic injection of macrophage migration inhibitory factor up-regulated expression of macrophage inflammatory protein 2 in the middle ear. These findings indicate that H. pylori infection causes immunological inflammation in middle ear epithelium, and H. pylori may play a significant role in otitis media.
AB - Helicobacter pylori is a Gram-negative bacterium that is recognized as one of the key factors in gastric diseases such as gastritis, peptic ulcer and gastric cancer. Recent studies have shown relationships between H. pylori and extra-digestive diseases, and the presence of H. pylori in the middle ear and upper respiratory tract has been reported. However, the role of H. pylori in middle ear disease remains unclear. The present study demonstrated that H. pylori whole-cell protein directly induces macrophage migration inhibitory factor, macrophage inflammatory protein 2, interleukin 1β and tumor necrosis factor α in middle ear epithelium in mice, and severe proliferation of inflammatory cells was observed in middle ear cavity inoculated with H. pylori whole-cell protein. In addition, trans-tympanic injection of macrophage migration inhibitory factor up-regulated expression of macrophage inflammatory protein 2 in the middle ear. These findings indicate that H. pylori infection causes immunological inflammation in middle ear epithelium, and H. pylori may play a significant role in otitis media.
KW - Cytokine
KW - Helicobacter pylori
KW - Macrophage inflammatory protein 2
KW - Macrophage migration inhibitory factor
KW - Otitis media
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UR - http://www.scopus.com/inward/citedby.url?scp=51349090604&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2249.2008.03740.x
DO - 10.1111/j.1365-2249.2008.03740.x
M3 - Article
C2 - 18727622
AN - SCOPUS:51349090604
VL - 154
SP - 134
EP - 140
JO - Clinical and Experimental Immunology
JF - Clinical and Experimental Immunology
SN - 0009-9104
IS - 1
ER -