Upregulation of geranylgeranyltransferase I in bronchial smooth muscle of mouse experimental asthma: its inhibition by lovastatin

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概要

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• RhoA has been recognized as an important protein for bronchial smooth muscle (BSM) contraction and hyperresponsiveness, and its activation is also regulated by geranylgeranyltransferase I (GGTase I). In the present study, the effects of repeated antigen exposure on the expression of GGTase I were determined in mouse BSMs. Male BALB/c mice were sensitized and repeatedly challenged with ovalbumin antigen. Animals were also treated with lovastatin (4 mg/kg/day, i.p.) once a day prior to and during the antigen inhalation period. Western blot analyses revealed that GGTase I was upregulated in BSMs of the antigen-challenged mice. The systemic treatment with lovastatin attenuated the upregulation of GGTase I induced by antigen exposure. Interestingly, lovastatin also significantly reduced the protein expression of GGTase I in BSMs of control animals. We thus concluded that an upregulation of GGTase I in BSM might be, at least in part, involved in the development of antigen-induced airway hyperresponsiveness. Lovastatin might have therapeutic potential to ameliorate airway hyperresponsiveness in allergic bronchial asthma.

• 日本平滑筋学会の論文
• 2010-02-01

著者

• MISAWA Miwa

  Department of Pharmacology, School of Pharmacy, Hoshi University

• Chiba Yoshihiko

  Dep. Of Pharmacology School Of Pharmacy Hoshi Univ.

• Sato Shunsuke

  Department Of Pharmacology School Of Pharmacy Hoshi University

• Chiba Yoshihiko

  Department Of Pharmacology School Of Pharmacy Hoshi University

• Misawa Miwa

  Department Of Pharmacology School Of Pharmacy Hoshi University

• Misawa M

  Hoshi Univ. Tokyo Jpn

• Misawa Miwa

  Department Of Applied Pharmacology Hoshi University

• Sato Shunsuke

  Department Of Medical Engineering Aino University

• Chiba Yoshihiko

  Department Of Biology School Of Pharmacy Hoshi University

• SATO Shunsuke

  Department of Cardiac Surgery, National Cerebral and Cardiovascular Center

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