title: A prospective case-control study of the local and systemic cytokine response after laparoscopic versus open colonic surgery.
abstract: BACKGROUND
  There is a sequential, high concentration cytokine response after major abdominal surgery. The magnitude of this response has been directly linked to postoperative metabolic derangement, ileus, adhesions, and oncological outcomes. We aimed to compare the local and systemic cytokine response in laparoscopic and open colonic surgery and relate this to postoperative recovery parameters.
  
  
  METHODS
  Using a prospectively collected patient database, we compared a Study Group (n = 50) of patients undergoing elective laparoscopic colonic resection with a Control Group (n = 25) of patients undergoing equivalent open colonic surgery within an ERAS program. Patients were matched for age, gender, BMI, ASA, Cr Possum, side of resection, diagnosis, and histologic stage. Plasma and peritoneal fluid concentrations of IL-6, IL-8, IL-10, and TNFα were measured at 20-24 h after surgery. The Surgical Recovery Score was determined pre-operatively and at 3, 7, 30, and 60 d postoperatively. All data were prospectively collected, and a priori definitions were used for discharge parameters, complications, and complication severity.
  
  
  RESULTS
  Peritoneal fluid IL-6 concentration was lower after laparoscopic surgery. There were no significant differences in the other cytokines measured, or in any postoperative recovery outcomes. Significant correlations were found between cytokine levels and discharge criteria achievement, day stay, postoperative complications, and the Surgical Recovery Score.
  
  
  CONCLUSIONS
  With the exception of a lower peritoneal IL-6 level, the systemic and peritoneal cytokine response at 20-24 h is similar after laparoscopic versus open colonic resection within an ERAS program, with corresponding equivalent rates of postoperative recovery.
authors.affiliation: Department of Surgery, South Auckland Clinical School, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand. tsammour@middlemore.co.nz
authors.forename: Tarik
authors.initials: T
authors.lastname: Sammour
authors.forename: Arman
authors.initials: A
authors.lastname: Kahokehr
authors.forename: Kamran
authors.initials: K
authors.lastname: Zargar-Shoshtari
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Hill
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D003106:Colon / Q000378:metabolism / Q000601:surgery*; D016207:Cytokines / Q000097:blood*; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011446:Prospective Studies; D055815:Young Adult
chemical_list: D016207:Cytokines