Interferon-α increases monocyte migration via platelet-monocyte interaction in murine intestinal microvessels

被引：4

作者：

Higashiyama, M. ^{[1
]}

Hokari, R. ^{[1
]}

Kurihara, C. ^{[1
]}

Ueda, T. ^{[1
]}

Nakamura, M. ^{[1
]}

Komoto, S. ^{[1
]}

Okada, Y. ^{[1
]}

Watanabe, C. ^{[1
]}

Kawaguchi, A. ^{[1
]}

Nagao, S. ^{[1
]}

Miura, S. ^{[1
]}

机构：

[1] Natl Def Med Coll, Dept Internal Med, Tokorozawa, Saitama 3598513, Japan

来源：

CLINICAL AND EXPERIMENTAL IMMUNOLOGY | 2010年 / 162卷 / 01期

关键词：

ileum; inflammation; interferon; mice; monocytes; platelets; CHRONIC HEPATITIS-C; ACTIVE ULCERATIVE-COLITIS; P-SELECTIN; CROHNS-DISEASE; RECRUITMENT; CARCINOMA; ADHESION; THERAPY; ILEITIS; MUCOSA;

D O I：

10.1111/j.1365-2249.2010.04222.x

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

P>The aim of this study was to investigate the effect of interferon (IFN)-alpha on recruitment of platelets and monocytes within the murine small intestinal venular endothelium. Monocytes were isolated from bone marrow of C57B6 mice. Platelets were collected from murine blood. Rolling and adhesion to submucosal microvessels in the small intestine were examined under an intravital fluorescence microscope after injection of fluorescein-labelled monocytes or platelets. In some mice, IFN-alpha (5 x 105U/kg) was administered intraperitoneally. After treatment with an antibody against P-selectin, changes in monocyte and platelet migration were also investigated. Changes in monocyte migration under the condition of thrombocytopenia were also investigated. Platelets and monocytes interacted with murine intestinal microvessels, although only few platelets and monocytes showed migration behaviour. Intraperitoneal injection of IFN-alpha enhanced the migration of both platelets and monocytes in the intestinal microvessels. Pretreatment with anti-P-selectin attenuated the increase in migration of platelets and monocytes induced by administration of IFN-alpha. Thrombocytopenia decreased the rolling ratio of monocytes, suggesting that the effect of IFN-alpha on migration was P-selectin-dependent, derived from both the endothelium of microvessels and platelets. The results of this study suggest that IFN-alpha acts as a potent proinflammatory agent via its stimulatory effect on the endothelium-platelet-monocyte interaction in intestinal microvessels by a P-selectin-dependent mechanism.

引用

页码：156 / 162

页数：7

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