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Related Experiment Videos

Open surgery induces a dramatic decrease in circulating intact IGFBP-3 in patients with colorectal cancer not seen

I Kirman1, V Cekic, N Poltoratskaia

  • 1Department of Surgery, College of Physicians and Surgeons of Columbia University, 630 West 168th Street, New York, NY 10032, USA. ikl39@columbia.edu

Surgical Endoscopy
|November 9, 2004
PubMed
Summary
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Open surgery significantly reduces intact insulin-like growth factor-binding protein 3 (IGFBP-3), a tumor suppressor, after colorectal cancer resection. Laparoscopic surgery does not affect IGFBP-3 levels, suggesting implications for cancer recurrence.

Area of Science:

  • Oncology
  • Biochemistry
  • Surgical Science

Background:

  • Open surgery (OS) decreases plasma insulin-like growth factor-binding protein 3 (IGFBP-3) postoperatively, unlike laparoscopic surgery (LS).
  • Intact IGFBP-3 possesses tumor-suppressive properties, whereas its degradation products lack this function.
  • Standard ELISA methods cannot differentiate between intact IGFBP-3 and its degradation products.

Purpose of the Study:

  • To precisely quantify plasma levels of intact IGFBP-3 on postoperative day 2 (POD2) after open and laparoscopic colorectal cancer resection (stage I-III).
  • To investigate the differential impact of open versus minimally invasive surgery on intact IGFBP-3 concentrations.

Main Methods:

  • A cohort of 15 OS patients and 16 LS patients undergoing colorectal cancer resection (stage I-III) were included.

Related Experiment Videos

  • Plasma samples were collected preoperatively and on POD2.
  • A novel combined Western blot and ELISA method was employed to determine intact IGFBP-3 levels.

    • Main Results:

    • In OS patients, intact IGFBP-3 levels decreased dramatically from a preoperative mean of 1920 +/- 1430 ng/ml to 355 +/- 545 ng/ml on POD2 (p < 0.005).
    • In LS patients, no significant difference was observed between preoperative (1305 +/- 807 ng/ml) and POD2 (922 +/- 714 ng/ml) intact IGFBP-3 levels.

    Conclusions:

    • Open colorectal cancer resection leads to a significant reduction in intact IGFBP-3 concentration.
    • This decrease in intact IGFBP-3 following open surgery may be linked to colon cancer recurrence.
    • Laparoscopic surgery preserves intact IGFBP-3 levels, highlighting its potential advantage in managing colorectal cancer patients.