PMID- 30524928 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231004 IS - 2196-3002 (Print) IS - 2196-3002 (Electronic) VI - 5 IP - 4 DP - 2018 TI - Oral Polymorphonuclear Neutrophil Contributes to Oral Health. PG - 211-220 LID - 10.1007/s40496-018-0199-6 [doi] AB - PURPOSE OF REVIEW: Oral health is maintained in a dynamic equilibrium between the host immunity and the oral microbiome. Oral polymorphonuclear neutrophils (oPMNs) are important innate immune cells in the oral cavity. RECENT FINDINGS: The oPMNs play a co-controlling part in the maintenance of oral equilibrium. In human saliva, the oPMNs integrity is preserved, and their function remains unaffected. In general, oPMNs are in a higher state of baseline activation compared to peripheral PMNs. However, in periodontitis, the oPMNs' activation state can result in excessive release of damaging molecules in the extracellular environment. SUMMARY: The presence of oPMNs may unwittingly negatively impact the integrity of the oral tissues. While most of the oPMN functions occur intracellularly, release of their potent active mediators into the extracellular environment may jeopardize oral homeostasis and its integrity. The dual nature of oPMNs, both beneficial and detrimental, remains a challenging and understudied topic. FAU - Rijkschroeff, Patrick AU - Rijkschroeff P AD - 1Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands. ISNI: 0000000084992262. GRID: grid.7177.6 FAU - Loos, Bruno G AU - Loos BG AD - 1Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands. ISNI: 0000000084992262. GRID: grid.7177.6 FAU - Nicu, Elena A AU - Nicu EA AD - 1Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands. ISNI: 0000000084992262. GRID: grid.7177.6 AD - Opris Dent SRL, Sibiu, Romania. LA - eng PT - Journal Article PT - Review DEP - 20181025 PL - Switzerland TA - Curr Oral Health Rep JT - Current oral health reports JID - 101626542 PMC - PMC6244624 OTO - NOTNLM OT - Apoptosis OT - Degranulation OT - Neutrophils OT - Oral health OT - Reactive oxygen species COIS- All authors declare that they have no conflict of interest.This article does not contain any studies with human or animal subjects performed by any of the authors. EDAT- 2018/12/14 06:00 MHDA- 2018/12/14 06:01 PMCR- 2018/10/25 CRDT- 2018/12/08 06:00 PHST- 2018/12/08 06:00 [entrez] PHST- 2018/12/14 06:00 [pubmed] PHST- 2018/12/14 06:01 [medline] PHST- 2018/10/25 00:00 [pmc-release] AID - 199 [pii] AID - 10.1007/s40496-018-0199-6 [doi] PST - ppublish SO - Curr Oral Health Rep. 2018;5(4):211-220. doi: 10.1007/s40496-018-0199-6. Epub 2018 Oct 25.