title: A preliminary study of paraoxonase-1 in infected patients with an indwelling central venous catheter.
abstract: OBJECTIVE
  Identification of biochemical markers to diagnose bloodstream infections in patients with a central venous catheter (CVC) inserted is an active research pursuit. Paraoxonase-1 (PON1) is an enzyme participating in the innate immune system protecting against toxic substances and infectious agents. We investigated the relationships between serum PON1 alterations and the characteristics of infection in a group of patients with a CVC implant.
  
  
  METHODS
  Patients (n=114) who had had an inserted CVC removed because of infection or because the usefulness was at an end, and 407 healthy volunteers were recruited. In all participants we measured serum PON1 lactonase and paraoxonase activities, PON1 concentration and genetic polymorphisms, together with levels of the chemokine (C-C motif) ligand 2 (CCL2), procalcitonin and C-reactive protein (CRP).
  
  
  RESULTS
  Patients with an acute concomitant infection (ACI) had higher CCL2, CRP and procalcitonin concentrations than the control group, together with lower paraoxonase and lactonase activities and specific activities. The areas under the curve of the receiver operating characteristic plots for paraoxonase and lactonase specific activities in the discrimination between patients with or without and ACI were 0.81 (0.73-0.89) and 0.81 (0.71-0.89), respectively, indicating the high diagnostic accuracy of these parameters.
  
  
  CONCLUSIONS
  This preliminary study suggests that the measurement of PON1 may be useful as a tool for the diagnosis of ACI in patients with an indwelling CVC.
authors.affiliation: Department of Internal Medicine, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Simona
authors.initials: S
authors.lastname: Iftimie
authors.affiliation: Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Anabel
authors.initials: A
authors.lastname: García-Heredia
authors.affiliation: Laboratori de Referència Sud, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Pujol
authors.affiliation: Laboratori de Referència Sud, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Frederic
authors.initials: F
authors.lastname: Ballester
authors.affiliation: Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain; Laboratori de Referència Sud, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Fort-Gallifa
authors.affiliation: Laboratori de Referència Sud, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Josep M
authors.initials: JM
authors.lastname: Simó
authors.affiliation: Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Joven
authors.affiliation: Department of Internal Medicine, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain. Electronic address: acastro@grupsagessa.com.
authors.forename: Antoni
authors.initials: A
authors.lastname: Castro
authors.affiliation: Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, C. Sant Joan, s/n, 43201 Reus, Spain. Electronic address: jcamps@grupsagessa.com.
authors.forename: Jordi
authors.initials: J
authors.lastname: Camps
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D043303:Aryldialkylphosphatase / Q000378:metabolism*; D062905:Central Venous Catheters / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007239:Infections / Q000201:enzymology*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies
chemical_list: D043303:Aryldialkylphosphatase; C468406:PON1 protein, human
keywords: Biomarkers; Catheters; Infection; Paraoxonase-1