書誌事項
- タイトル別名
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- Cbl-b ケッソン ニ ヨル マクロファージ ノ カッセイカ オ カイシタ タイトウノウ イジョウ
- 第18回徳島医学会賞受賞論文 Cbl-b欠損によるマクロファージの活性化を介した耐糖能異常
- Deficiency of Cbl-b gene enhances infiltration and activation of macrophages in adipose tissue and causes peripheral insulin resistance in mice
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説明
Obesity is a major cause of insulin resistance and is considered a chronic low-grade inflammatory disease. Substantial evidence has accumulated in recent years that chronic infiltration and activation of macrophages in white adipose tissue underlie the obesity-related component of these insulin resistant states. In the present study, we examined the role of Cbl-b, ubiquitin ligase, in insulin action. Elderly Cbl-b-deficient mice(Cbl-b-/-mice)developed glucose intolerance and peripheral insulin resistance. Deficiency of Cbl-b gene was associated with infiltration of macrophages into the WAT and expression of cytokines, such as tumor necrosis factor-α, interleukin-6 and monocyte chemoattractant protein-1. Furthermore, Vav1, a key factor in macrophage activation, was highly phosphorylated in peritoneal Cbl-b-/-macrophages, compared with wild type macrophages, suggesting that Cbl-b deficiency induces macrophage activation. Our results suggest that Cbl-b is a negative regulator of macrophage activation, and that macrophage activation by Cbl-b deficiency, at least in part, contributes to the peripheral insulin resistance and glucose intolerance.
収録刊行物
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- 四国医学雑誌
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四国医学雑誌 63 (3-4), 111-115, 2007-08-25
徳島医学会
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詳細情報 詳細情報について
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- CRID
- 1050583647830887552
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- NII論文ID
- 120006324305
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- NII書誌ID
- AN00102041
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- ISSN
- 00373699
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- NDL書誌ID
- 8951956
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- NDLサーチ
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