AlphaV beta3 (αvβ3) integrin inhibition reduces leukocyte-endothelium interaction in a pressure-induced reperfusion model

Shigeru Ichioka, Naomi Sekiya, Masahiro Shibata, Takashi Nakatsuka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The leukocyte-endothelium interaction is known to contribute to reperfusion injury, which is considered to participate in the pathophysiology of pressure ulcers, and integrin alphaV beta3 (αvβ3) has been shown to mediate the processes of cellular adhesion in various types of cells. This study aims to clarify leukocyte behavior in our original microcirculatory pressure-induced reperfusion model, which can visualize the microcirculation in vivo. We also estimated the effect of αvβ3 integrin inhibition on the reduction of the leukocyte-endothelium interaction. Mice with dorsal skinfold chambers were divided into three groups: the baseline group (n=6), in which animals received no compression; the compression-reperfusion group (n=6), in which animals underwent 2-hour compression of the dorsal skin, followed by release, and the inhibitor-treated group (n=7), in which an αvβ3 inhibitor, CP4715, was administered in addition to the compression-release procedure. Staining with rhodamine 6G quantitatively visualized leukocyte behavior under the intravital fluorescent microscope. Compression-reperfusion induced a significant increase in rolling, sticking, and extravasation of the leukocytes. Treatment with the inhibitor strikingly reduced leukocyte sticking and extravasation. The present experiment has provided evidence that αvβ3 inhibition reduces leukocyte-endothelium interaction in our original pressure-induced reperfusion model.

Original languageEnglish
Pages (from-to)572-576
Number of pages5
JournalWound Repair and Regeneration
Volume15
Issue number4
DOIs
Publication statusPublished - 2007 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Dermatology
  • Surgery

Cite this

AlphaV beta3 (αvβ3) integrin inhibition reduces leukocyte-endothelium interaction in a pressure-induced reperfusion model. / Ichioka, Shigeru; Sekiya, Naomi; Shibata, Masahiro; Nakatsuka, Takashi.

In: Wound Repair and Regeneration, Vol. 15, No. 4, 07.2007, p. 572-576.

Research output: Contribution to journalArticle

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