eCAM Advance Access published online on October 27, 2009
eCAM, doi:10.1093/ecam/nep151
Proteomic Analysis of Anti-inflammatory Effects of a Kampo (Japanese Herbal) Medicine Shoseiryuto (Xiao-Qing-Long-Tang) on Airway Inflammation in a Mouse Model
1Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, 2Oriental Medicine Research Center, Kitasato University, Tokyo and 3Laboratory of Biomolecular Dynamics, Department of Physics, Kitasato University School of Science, Sagamihara, Kanagawa, Japan
Effects of a Kampo (Japanese herbal) medicine shoseiryuto (SST, xiao-qing-long-tang in Chinese), which has been used for the treatment of allergic bronchial asthma clinically, were examined on ovalbumin (OVA)-sensitized allergic airway inflammation model (i.e. bronchial asthma) in a mouse. When SST was orally administered at 0.5 g kg–1 day–1 from day 1 to 6 after OVA inhalation, SST reduced the inflammation in lung tissue, the number of eosinophils and the OVA-specific immunoglobulin E (IgE) antibody titer in bronchoalveolar lavage (BAL) fluids at 7 days after the OVA inhalation. SST also reduced the airway hyperreactivity at 6 days after the OVA inhalation. Proteomic analysis with the agarose two-dimensional electrophoresis showed that the expression of spectrin
2 was reduced in the lung tissue of OVA-sensitized mice and SST recovered the expression. Western blot and immunohistochemical analyses of lung tissue also confirmed this result. When prednisolone was orally administered at 3 mg kg–1 day–1 from day 1 to 6 after OVA inhalation, the inflammation in lung tissue, the number of eosinophils in BAL fluids and airway hyperreactivity were reduced in the OVA-sensitized mice. However, prednisolone did not reduce the OVA-specific IgE antibody titer in BAL fluids and did not recover the expression of spectrin
2 in lung tissue. These results suggest that at least a part of action mechanism of SST against OVA-sensitized allergic airway inflammation in a mouse model is different from that of prednisolone.
Keywords: asthma – airway inflammation – eosinophil – proteomic analysis – shoseiryuto – spectrin
2 – xiao-qing-long-tang
For reprints and all correspondence: Haruki Yamada, Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan. Tel: +81-3-5791-6364; Fax: +81-3-3445-1351; E-mail: yamada{at}lisci.kitasato-u.ac.jp