Salbutamol inhibits lipopolysaccharide-induced inflammatory responses in rat peritoneal macrophages
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概要
- 論文の詳細を見る
Acute and chronic inflammatory diseases are associated with the induction of inducible nitric oxide synthase (iNOS) and inducible heme oxygenase (HO-1). These inducible enzymes are up-regulated in macrophages subjected to inflammatory stimuli and oxidative stress. β2-Adrenoceptor (AR) agonists, which function as bronchial dilators, are widely used for the treatment of asthma and chronic obstructive pulmonary disease (COPD). We examined whether salbutamol, a classical β2-AR agonist, inhibits the induction of proinflammatory cytokines and stress inducible proteins. Rat macrophages obtained from the abdominal cavity were incubated with lipopolysaccharide (LPS) with or without salbutamol. Induction by LPS of tumor necrosis factor (TNF)-α and interleukin (IL)-6 was significantly inhibited (P < 0.05) by salbutamol treatment. Induction by LPS of iNOS mRNA and protein was also significantly inhibited (P < 0.05) by salbutamol. LPS-mediated increases in HO-1 mRNA and protein were not appreciably affected by salbutamol. One of the anti-inflammatory mechanisms of salbutamol was thus found to be inhibition of induction by LPS of extracellular stimulus-responsive kinase (ERK) 1/2 in macrophages. These findings suggest that salbutamol has the potential for use as an anti-inflammatory agent due to its suppression of LPS-induced TNF-α, and IL-6 and iNOS via ERK pathway without affecting HO-1 expression.
著者
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YOSHIDA Takemi
Department of Biochemical Toxicology, School of Pharmacy, Showa University
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TANAKA Satoru
Toxicology Laboratory, Kissei Pharmaceutical Co., Ltd.
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TSUTSUI Masaru
Toxicology Laboratory, Kissei Pharmaceutical Co., Ltd.
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KISHIDA Tomoyuki
Toxicology Laboratory, Kissei Pharmaceutical Co., Ltd.
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SOUMA Shinji
Toxicology Laboratory, Kissei Pharmaceutical Co., Ltd.
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KURODA Junji
Toxicology Laboratory, Kissei Pharmaceutical Co., Ltd.
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