title: Ischaemic Preconditioning and Intermittent Clamping Does not Influence Mediators of Liver Regeneration in a Human Liver Sinusoidal Endothelial Cell Model of Ischaemia-Reperfusion Injury.
abstract: BACKGROUND
  The role of surgical technique on liver regeneration following surgery remains inconclusive. The aim of the study was to assess the effect of ischaemic preconditioning (IPC) and intermittent clamping (IC) on mediators of regeneration produced by human liver sinusoidal endothelial cells (SECs), using an in vitro hypoxia-reoxygenation model to mimic ischaemia-reperfusion injury (IRI).
  
  
  METHODS
  Following extraction from samples obtained from liver resection (n = 5), confluent culture flasks of SECs were subjected to IRI (1 hour hypoxia + 1 hour reoxygenation), IPC prior to IRI (10 minutes hypoxia + 10 minutes reoxygenation + 1 hour hypoxia + 1 hour reoxygenation), IC (15 minutes hypoxia + 5 minutes reoxygenation x 3 + 1 hour reoxygenation) and compared to controls. The production of various mediators was determined over 48 hours.
  
  
  RESULTS
  Interleukin (IL)-6, IL-8, granulocyte-colony stimulating factor (G-CSF) and hepatocyte growth factor (HGF) were produced by SECs. Both IPC and IC did not significantly influence the profile of IL-6, IL-8, G-CSF and HGF by SECs compared to IRI over the study period.
  
  
  CONCLUSIONS
  IPC and IC did not influence the production of pro-regenerative mediators in a SECs model of IRI. The role of surgical technique on liver regeneration remains to be determined.
authors: Department of Hepatobiliary Surgery and Transplantation, St. James's University Hospital, Leeds, UK.
authors: Dhanwant
authors: D
authors: Gomez
authors: Section of Oncology, University of Sheffield, UK.
authors: J Lance
authors: JL
authors: Burn
authors: Department of Biomedical Sciences, University of Bradford, Bradford, UK.
authors: Ann
authors: A
authors: Graham
authors: Department of Vascular Surgery, Leeds General Infirmary, Leeds, UK.
authors: Shervanthi
authors: S
authors: Homer-Vanniasinkam
authors: Department of Hepatobiliary Surgery and Transplantation, St. James's University Hospital, Leeds, UK.
authors: K Rajendra
authors: KR
authors: Prasad
keywords: Ischaemic preconditioning; Ischaemic reperfusion; Liver; Regeneration