Polyamines found in gingival fluid inhibit chemotaxis by human polymorphonuclear leukocytes in vitro.

J. D. Walters, T. J. Miller, A. C. Cario, F. M. Beck, P. T. Marucha

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Putrescine and spermidine occur at concentrations approaching 1 mM in gingival fluid at diseased periodontal sites. Previous work demonstrates that these polyamines potentiate Ca2+ signaling in polymorphonuclear leukocytes (PMNs), resulting in enhanced degranulation and superoxide generation. The present study extends this work by characterizing the effects of polyamines on PMN chemotaxis and phagocytosis, in which Ca2+ signaling plays a less defined regulatory role. Putrescine (1 mM) and spermidine (0.1 to 0.5 mM) significantly inhibited chemotaxis to fMet-Leu-Phe and C5a (P < 0.05). This inhibition was not strongly related to any effect polyamines have on PMN adhesion, actin polymerization, or formyl peptide receptor expression. Neither putrescine nor spermidine had a significant impact on phagocytosis of opsonized bacteria by PMNs. Thus, at concentrations similar to those found in gingival fluid, polyamines could potentially inhibit recruitment of PMNs to diseased pockets without impairing their ability to engulf invading bacteria.

Original languageEnglish (US)
Pages (from-to)274-278
Number of pages5
JournalJournal of periodontology
Volume66
Issue number4
DOIs
StatePublished - Apr 1995

ASJC Scopus subject areas

  • Periodontics

Fingerprint Dive into the research topics of 'Polyamines found in gingival fluid inhibit chemotaxis by human polymorphonuclear leukocytes in vitro.'. Together they form a unique fingerprint.

  • Cite this