title: A prospective randomised study of the probiotic Lactobacillus plantarum 299V on indices of gut barrier function in elective surgical patients.
abstract: BACKGROUND
  Bacterial translocation occurs in surgical patients and may predispose to postoperative septic morbidity. Many factors are thought to influence the prevalence of bacterial translocation, one of which is the composition of the gut microflora. The aim of this prospective and randomised study was to assess the effect of the probiotic Lactobacillus plantarum 299v on the incidence of bacterial translocation, gastric colonisation, and septic complications in elective surgical patients.
  
  
  METHODS
  Patients undergoing elective major abdominal surgery were randomised to either a treatment or control group. The treatment group received an oral preparation containing Lactobacillus plantarum 299v (Proviva) for at least one week preoperatively and also in the postoperative period. Bacterial translocation was determined by culture of a mesenteric lymph node and serosal scraping obtained at laparotomy. Gastric colonisation was assessed by microbiological culture of nasogastric aspirates. All postoperative septic complications were recorded.
  
  
  RESULTS
  A total of 129 patients completed the study (probiotic group n=64). There was no significant difference between the two groups in terms of bacterial translocation (12% v 12%; p=0.82), gastric colonisation with enteric organisms (11% v 17%; p=0.42), or septic morbidity (13% v 15%; p=0.74).
  
  
  CONCLUSIONS
  Administration of Lactobacillus plantarum 299v in elective surgical patients does not influence the rate of bacterial translocation, gastric colonisation, or incidence of postoperative septic morbidity.
authors.affiliation: Combined Gastroenterology Unit, Scarborough Hospital, Scarborough, North Yorkshire, UK.
authors.forename: C E
authors.initials: CE
authors.lastname: McNaught
authors.forename: N P
authors.initials: NP
authors.lastname: Woodcock
authors.forename: J
authors.initials: J
authors.lastname: MacFie
authors.forename: C J
authors.initials: CJ
authors.lastname: Mitchell
mesh_terms: D000328:Adult; D000368:Aged; D001424:Bacterial Infections / Q000276:immunology / Q000517:prevention & control; D018988:Bacterial Translocation; D002097:C-Reactive Protein / Q000032:analysis; D016009:Chi-Square Distribution; D005260:Female; D005753:Gastric Mucosa / Q000276:immunology / Q000382:microbiology*; D006801:Humans; D007413:Intestinal Mucosa / Q000276:immunology / Q000382:microbiology*; D007778:Lactobacillus / Q000502:physiology*; D008198:Lymph Nodes / Q000276:immunology / Q000382:microbiology; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000276:immunology / Q000517:prevention & control; D011300:Preoperative Care; D019936:Probiotics; D011446:Prospective Studies; D018709:Statistics, Nonparametric
chemical_list: D002097:C-Reactive Protein