Preoperative plasma plasminogen activator inhibitor type-1 and serum C-reactive protein levels in patients with colorectal cancer

Hans Jørgen Nielsen*, Ib Jarle Christensen, Steen Sørensen, Flemming Moesgaard, Nils Brünner, Svend Schulze, Jens Thorup, Peer Wille-Jørgensen, Erik Bentzen, Lars Banke, Dorthe Froberg, Finn W. Henriksen, Poul Crone, Peter Hesselfeldt, Bo Hempel-Sparsø, Karen Lindorff Larsen, Torsten Asmussen, Jørgen Heiner, Ole Hart Hansen, Henrik FlygerPer Jess, Jørgen Iversen, Jørgen La Cour Andersen, Bo Vennits, Janne H. Hammer, Anders Fischer, Hanne Galatius, Lars Naver, Dorthe Teilum, Leif Holbraad, Ole Iversen, Jens Nymark, Ole Roikjær, Leif Palm, Kirsten C. Rasmussen, Jørn Friis, Charlotte Lanng, Henrik Ovesen, Niels Chr Jensen, Niels Hoffman, Torben Larse, Jørgen Packler

*Corresponding author for this work
104 Citations (Scopus)

Abstract

Background: Preoperative plasma plasminogen activator inhibitor-1 (PAI-1) is a prognostic variable in patients with colorectal cancer. It has been suggested, however, that plasma PAI-1 is a nonspecific prognostic parameter similar to the acute-phase reactant C-reactive protein (CRP). In the present study we analyzed the association between plasma PAI-1 and serum CRP in patients scheduled for elective resection of colorectal cancer. In addition, the prognostic value of PAI-1 and CRP was studied in this patient cohort. Methods: PAI-1 and CRP were analyzed in citrated plasma and serum, respectively, obtained preoperatively from 594 patients. Patients who required preoperative blood transfusion received SAGM blood, in which soluble PAI-1 is not present. None of the patients received pre- or postoperative adjuvant chemotherapy, and all were followed in the outpatient clinic for at least 5 years or until death. The association of PAI-1 and CRP, respectively, with survival was tested using the median value of PAI-1 and the upper normal limit for CRP. Analyses were performed by inclusion of all patients, and in the subgroup of patients, who underwent curative resection. Results: The median follow-up period was 6.8 (5.4-7.9) years. The median value of plasma PAI-1 was 35.8 ng/ml, and values greater than 94 nmol/L identified patients with increased CRP levels. Comparison of the molecules showed that PAI-1 was weakly correlated with CRP (r = .26; P <.0001). Both molecules showed a Dukes independent distribution. In univariate survival analyses high levels of PAI-1 were found associated with poor prognosis and low levels with good prognosis (P = .02, HR: 1.3). Similarly, high levels of CRP were found associated with poor prognosis and low levels with good prognosis (P <.0001, HR: 1.9). In a multivariate statistical analysis including Dukes classification, gender, age, tumor location, perioperative blood transfusion, PAI-1 and CRP, plasma PAI-1 was a dependent prognostic variable, while serum CRP (P <.0001; HR: 1.4; 95% CI: 1.3-1.5) was found to be a Dukes independent prognostic variable. Similar analyses, excluding patients with Dukes, D disease showed serum CRP to be an independent prognostic variable (P <.0001; HR: 1.3: 95% CI: 1.2-1.5). Conclusions: This study did not show a strong correlation between plasma PAI-1 and serum CRP in patients with colorectal cancer. Serum CRP was found to be a Dukes independent prognostic variable in this patient cohort, and was found to identify a subgroup of curatively resected patients at risk for short survival.

Original languageEnglish
JournalAnnals of Surgical Oncology
Volume7
Issue number8
Pages (from-to)617-623
Number of pages7
ISSN1068-9265
DOIs
Publication statusPublished - 1 Jan 2000

Keywords

  • Blood transfusion
  • C-reactive protein
  • Colorectal cancer
  • Plasminogen activator inhibitor-1
  • Prognosis
  • Survival

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