title: Relationship between soluble P-selectin and inflammatory factors (interleukin-6 and C-reactive protein) in colorectal cancer.
abstract: BACKGROUND
  Platelets are an important element in the thrombotic process, inflammation and cancer progression. We tested the hypothesis that there is a relationship between platelet activation and inflammation in colorectal cancer patients (CRC).
  
  
  METHODS
  We measured soluble (s) P-selectin (marker of platelet activation), interleukin-6 (IL-6) and C-reactive protein (CRP) (indexes of inflammation) in 42 CRC patients and 38 healthy subjects. CRC patients were divided into two groups: A-24 patients in stages I and II; B-18 patients in stage III. Soluble P-selectin, Interleukin-6 concentration was measured using commercially available immunoenzymatic methods. High sensitivity C-reactive protein (RCRP) concentration was measured by a high sensitivity latex particle turbidimetric immunoassay.
  
  
  RESULTS
  Soluble P-selectin, CRP and IL-6 levels were significantly increased as compared to the control group (p<0.001). Plasma levels of sP-selectin, CRP and IL-6 were higher in group B (with metastases) than in group A (without metastases) (p<0.001). CRC patients had a positive correlation between IL-6 and CRP (r=0.7638, p<0.01) and between sP-selectin and IL-6 (r=0.5633, p<0.03).
  
  
  CONCLUSIONS
  We observed hyperactivation of blood platelets and inflammatory response in patients with colorectal cancer, also the inflammatory process and platelet activation progress along with colorectal cancer advancement. Our results seem to confirm the relationship of platelet activation with inflammatory response in colorectal cancer patients.
authors.affiliation: Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Waszyngtona 15A, 15-274 Bialystok, Poland. vpiekarska@yahoo.com
authors.forename: Violetta
authors.initials: V
authors.lastname: Dymicka-Piekarska
authors.forename: Joanna
authors.initials: J
authors.lastname: Matowicka-Karna
authors.forename: Mariusz
authors.initials: M
authors.lastname: Gryko
authors.forename: Izabela
authors.initials: I
authors.lastname: Kemona-Chetnik
authors.forename: Halina
authors.initials: H
authors.lastname: Kemona
mesh_terms: D000368:Aged; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000032:analysis*; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000097:blood* / Q000473:pathology*; D005260:Female; D006801:Humans; D007249:Inflammation; D015850:Interleukin-6 / Q000097:blood*; D008297:Male; D008875:Middle Aged; D019007:P-Selectin / Q000097:blood*; D015539:Platelet Activation; D015854:Up-Regulation
chemical_list: D015415:Biomarkers; D015850:Interleukin-6; D019007:P-Selectin; D002097:C-Reactive Protein