title: Activation of platelet membrane glycoprotein induced by parenteral nutrition: a preliminary report.
abstract: BACKGROUND
  Long-term parenteral nutrition (PN) is a standardized treatment in many patients who are unable to use their gastrointestinal tract to absorb nutrients and water. Catheter-related thrombosis (CRT) is one of the most common complications of PN. Several factors predispose patients to CRT. The main objective of this study was to assess the platelet membrane glycoprotein (GP) activation and coagulopathy induced by PN.
  
  
  METHODS
  Fifteen patients with intestinal failure were given PN for 47.9 days (range, 30-92 days) and 15 oral-fed healthy volunteers served as controls. Complete blood counts and coagulation and biochemical parameters were determined. The platelet surface GPs, P-selectin and GPIIb/IIIa were measured by flow cytometry.
  
  
  RESULTS
  There was no significant difference between the control group and PN group in coagulation and biochemical parameters. Platelet P-selectin expression of the PN group was significantly higher than that of the control group (3.43% ± 1.22% and 1.99% ± 0.58%, respectively; P < .01). There was no significant difference in GPIIb/IIIa expression between the 2 groups.
  
  
  CONCLUSIONS
  Long-term PN (>30 days) induced the activation of platelet membrane GPs, which may be a significant risk factor for the development of CRT in patients with intestinal failure who require PN.
authors: Department of Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China. guttx@yahoo.com
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