Intravital demonstration of modulation of T lymphocyte migration by CINC/gro in rat Peyer's patches

Hitoshi Fujimori, Soichiro Miura, Seiichiro Koseki, Ryota Hokari, Yoshikazu Tsuzuki, Shunsuke Komoto, Yuriko Hara, Hidekazu Suzuki, Hiroshi Serizawa, Hiromasa Ishii

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3 Citations (Scopus)

Abstract

Background/Aims: Cytokine-induced neutrophil chemoattractant (CINC/gro), a member of interleukin-8 family, was found as a potent chemotactic factor for rat neutrophils. Although several chemokines have been shown to be potent regulators of T cell chemotaxis in vitro, the potential role of chemokines in T-cell migration in gut-associated lymphoid tissues has not been investigated in vivo. In the present study, the effects of CINC/gro on T-lymphocyte migration were examined in rat Peyer's patches. Methods: T lymphocytes collected from intestinal lymph of rats were fluorescence-labeled and injected into the jugular vein. Peyer's patches of the recipient rats were observed with intravital fluorescence microscopy and the effects of CINC/gro infusion was investigated. Lymphocyte flux in mesenteric collecting lymphatics was also observed. Results: In vivo infusion of CINC/gro significantly attenuated the initial lymphocyte interaction with postcapillary venules of Peyer's patches. However, once these lymphocytes adhered to venules, CINC/gro treatment significantly accelerated the transendothelial migration of T lymphocytes and they also significantly increased their subsequent flux in collecting lymphatics. Conclusion: There is a possibility that CINC/gro could modulate the characteristics of T lymphocyte homing in the inflammatory sites of gut.

Original languageEnglish
Pages (from-to)97-102
Number of pages6
JournalDigestion
Volume63
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2001 Feb 6

Keywords

  • CINC/gro
  • Collecting lymphatics
  • Peyer's patch
  • Postcapillary venules
  • T lymphocytes
  • Transendothelial migration

ASJC Scopus subject areas

  • Gastroenterology

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    Fujimori, H., Miura, S., Koseki, S., Hokari, R., Tsuzuki, Y., Komoto, S., Hara, Y., Suzuki, H., Serizawa, H., & Ishii, H. (2001). Intravital demonstration of modulation of T lymphocyte migration by CINC/gro in rat Peyer's patches. Digestion, 63(SUPPL. 1), 97-102. https://doi.org/10.1159/000051919