PMID- 28833699 OWN - NLM STAT- MEDLINE DCOM- 20180801 LR - 20220330 IS - 1600-0722 (Electronic) IS - 0909-8836 (Print) IS - 0909-8836 (Linking) VI - 125 IP - 5 DP - 2017 Oct TI - Impaired polymorphonuclear neutrophils in the oral cavity of edentulous individuals. PG - 371-378 LID - 10.1111/eos.12367 [doi] AB - Oral health is characterized by functional oral polymorphonuclear neutrophils (oPMNs). Edentulism might be associated with a loss of oPMNs because these cells enter the oral cavity primarily through the gingival crevices. The main aim of this study was to investigate the numbers of oPMNs in rinse samples obtained from edentulous (n = 21) and dentate (n = 20) subjects. A second study aim was to investigate possible differences between oPMNs and peripheral blood polymorphonuclear neutrophils (cPMNs). Apoptosis/necrosis and cell-activation markers (CD11b, CD63 and CD66b) were analyzed using flow cytometry. Reactive oxygen species (ROS) production was determined either without stimulation (constitutive) or in response to 10 muM phorbol myristate acetate or Fusobacterium nucleatum. The edentulous subjects presented with lower oPMN counts and higher percentages of apoptotic/necrotic oPMNs compared with dentate subjects. Furthermore, oPMNs from edentulous donors expressed low levels of all three activation markers and low constitutive ROS. In contrast, oPMNs from dentate subjects expressed high levels of all three activation markers and a higher level of constitutive ROS than cPMNs. When challenged, oPMNs from edentulous subjects showed no upregulation in ROS production, whereas oPMNs from dentate subjects retained their ability to respond to stimulation. The functional characteristics of cPMNs were comparable between edentulous and dentate subjects. This study demonstrates that despite having functional cPMNs, edentulous subjects have low oPMN numbers that are functionally impaired. CI - (c) 2017 The Authors. Eur J Oral Sci published by John Wiley & Sons Ltd. FAU - Rijkschroeff, Patrick AU - Rijkschroeff P AUID- ORCID: 0000-0002-3997-0878 AD - Department of Periodontology, Academic Centre for Dentistry Amsterdam, Amsterdam, the Netherlands. FAU - Loos, Bruno G AU - Loos BG AD - Department of Periodontology, Academic Centre for Dentistry Amsterdam, Amsterdam, the Netherlands. FAU - Nicu, Elena A AU - Nicu EA AD - Department of Periodontology, Academic Centre for Dentistry Amsterdam, Amsterdam, the Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170819 PL - England TA - Eur J Oral Sci JT - European journal of oral sciences JID - 9504563 RN - 0 (Antigens, CD) RN - 0 (CD11b Antigen) RN - 0 (CD63 protein, human) RN - 0 (CEACAM8 protein, human) RN - 0 (Cell Adhesion Molecules) RN - 0 (GPI-Linked Proteins) RN - 0 (ITGAM protein, human) RN - 0 (Reactive Oxygen Species) RN - 0 (Tetraspanin 30) SB - IM MH - Aged MH - Antigens, CD/metabolism MH - Apoptosis MH - CD11b Antigen/metabolism MH - Case-Control Studies MH - Cell Adhesion Molecules/metabolism MH - Female MH - Flow Cytometry MH - GPI-Linked Proteins/metabolism MH - Humans MH - Male MH - Middle Aged MH - Mouth, Edentulous/*metabolism MH - Necrosis MH - Neutrophils/*metabolism MH - Reactive Oxygen Species/metabolism MH - Tetraspanin 30/metabolism PMC - PMC5601278 OTO - NOTNLM OT - apoptosis OT - granulocytes OT - innate immunity OT - oral health OT - reactive oxygen species EDAT- 2017/08/24 06:00 MHDA- 2018/08/02 06:00 PMCR- 2017/09/18 CRDT- 2017/08/24 06:00 PHST- 2017/06/28 00:00 [accepted] PHST- 2017/08/24 06:00 [pubmed] PHST- 2018/08/02 06:00 [medline] PHST- 2017/08/24 06:00 [entrez] PHST- 2017/09/18 00:00 [pmc-release] AID - EOS12367 [pii] AID - 10.1111/eos.12367 [doi] PST - ppublish SO - Eur J Oral Sci. 2017 Oct;125(5):371-378. doi: 10.1111/eos.12367. Epub 2017 Aug 19.