Impaired neutrophil directional chemotactic accuracy in chronic periodontitis patients

Roberts, H. M., Ling, M. R., Insall, R. , Kalna, G., Spengler, J., Grant, M. M. and Chapple, I. L.C. (2015) Impaired neutrophil directional chemotactic accuracy in chronic periodontitis patients. Journal of Clinical Periodontology, 42(1), pp. 1-11. (doi: 10.1111/jcpe.12326) (PMID:25360483) (PMCID:PMC4340045)

Abstract

Aim: To investigate the chemotactic accuracy of peripheral blood neutrophils from patients with chronic periodontitis compared with matched healthy controls, before and after non-surgical periodontal therapy. Material & Methods: Neutrophils were isolated from patients and controls (n = 18) by density centrifugation. Using the Insall chamber and video microscopy, neutrophils were analysed for directional chemotaxis towards N-formyl-methionyl-leucyl-phenylalanine [fMLP (10 nM), or CXCL8 (200 ng/ml)]. Circular statistics were utilized for the analysis of cell movement. Results: Prior to treatment, neutrophils from patients with chronic periodontitis had significantly reduced speed, velocity and chemotactic accuracy compared to healthy controls for both chemoattractants. Following periodontal treatment, patient neutrophils continued to display reduced speed in response to both chemoattractants. However, velocity and accuracy were normalized for the weak chemoattractant CXCL8 while they remained significantly reduced for fMLP. Conclusions: Chronic periodontitis is associated with reduced neutrophil chemotaxis, and this is only partially restored by successful treatment. Dysfunctional neutrophil chemotaxis may predispose patients with periodontitis to their disease by increasing tissue transit times, thus exacerbating neutrophil-mediated collateral host tissue damage.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Insall, Professor Robert and Kalna, Dr Gabriela
• Authors: Roberts, H. M., Ling, M. R., Insall, R., Kalna, G., Spengler, J., Grant, M. M., and Chapple, I. L.C.
• College/School: College of Medical Veterinary and Life Sciences > School of Cancer Sciences
• Journal Name: Journal of Clinical Periodontology
• Publisher: Wiley
• ISSN: 0303-6979
• ISSN (Online): 1600-051X
• Published Online: 31 October 2014
• Copyright Holders: Copyright © 2014 The Authors
• First Published: First published in Journal of Clinical Periodontology 42(1):1-11
• Publisher Policy: Reproduced under a Creative Commons License