title: Reactive oxygen species (ROS)--a family of fate deciding molecules pivotal in constructive inflammation and wound healing.
abstract: Wound healing requires a fine balance between the positive and deleterious effects of reactive oxygen species (ROS); a group of extremely potent molecules, rate limiting in successful tissue regeneration. A balanced ROS response will debride and disinfect a tissue and stimulate healthy tissue turnover; suppressed ROS will result in infection and an elevation in ROS will destroy otherwise healthy stromal tissue. Understanding and anticipating the ROS niche within a tissue will greatly enhance the potential to exogenously augment and manipulate healing. Tissue engineering solutions to augment successful healing and remodelling of wounded or diseased tissue rely on a controlled balance between the constructive and destructive capacity of the leukocyte secretome, including ROS. This review comprehensively considers leukocyte derived ROS in tissue repair with particular interest in surgical intervention with inclusion of a biomaterial. The article considers ROS fundamental chemistry, formation, stimulation and clearance before applying this to discuss the implications of ROS in healing tissue with and without a biomaterial. We also systematically discuss ROS in leukocyte signalling and compare and contrast experimental means of measuring ROS.
authors.affiliation: Clinical Engineering, UKCTE, UKBioTEC, The Institute of Ageing and Chronic Disease, University of Liverpool, Duncan Building, Daulby Street, Liverpool, L69 3GA, UK. n.bryan@liv.ac.uk
authors.forename: Nicholas
authors.initials: N
authors.lastname: Bryan
authors.forename: Helen
authors.initials: H
authors.lastname: Ahswin
authors.forename: Neil
authors.initials: N
authors.lastname: Smart
authors.forename: Yves
authors.initials: Y
authors.lastname: Bayon
authors.forename: Stephen
authors.initials: S
authors.lastname: Wohlert
authors.forename: John A
authors.initials: JA
authors.lastname: Hunt
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000378:metabolism; D006801:Humans; D007249:Inflammation / Q000378:metabolism* / Q000601:surgery; D007962:Leukocytes / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism*; D023822:Tissue Engineering; D014945:Wound Healing
chemical_list: D001672:Biocompatible Materials; D017382:Reactive Oxygen Species