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. 2018 Nov;16(5):6331-6338.
doi: 10.3892/ol.2018.9435. Epub 2018 Sep 12.

Fractional uptake of circulating tumor cells into liver-lung compartments during curative resection of periampullary cancer

Affiliations

Fractional uptake of circulating tumor cells into liver-lung compartments during curative resection of periampullary cancer

Caroline Vilhav et al. Oncol Lett. 2018 Nov.

Abstract

Circulating tumor cells (CTCs) are able to predict outcome in patients with breast, colon and prostate cancer and appear to be promising biomarkers of pancreatic carcinoma. The aim of the present study was to demonstrate a statistically significant portal-arterial difference of CTCs during curative resection of periampullary cancer. A commercially available instrument (IsofluxR) was used to quantify blood content of CTC in 10 patients with periampullary cancer according to preoperative diagnostics. Portal and arterial blood samples (~8 ml each) were simultaneously collected intra-operatively following surgical dissection prior to division of the pancreas for tumor removal. Quantitative CTC analyses were performed according to standardized protocols for immune-magnetic enrichment of CTC. Flow cytometry was applied for qualitative evaluations of various CTC markers in 7 patients. There was a statistically significant difference in the number of CTCs collected in the portal blood [58±14 cells per 100 ml; mean ± standard error (SE)] vs. arterial blood [24±7 cells per 100 ml (SE), P<0.025]. A fractional uptake of ≥40% across liver and lung compartments of assumed malignant CTC was estimated to correspond to the appearance of ~410 tumor cells per minute during pancreatic resections based on estimated hepatic blood flow, measured tumor cell mass and tumor cell proliferation activity. Complications in the collection of portal blood were not observed. A significant uptake across liver or lung compartments of potentially malignant tumor CTCs from periampullary carcinoma may represent a model to capture, define and characterize cell clones with metastatic potential in liver and lung tissues following surgical resection.

Keywords: circulating tumor cells; flow cytometry; isoflux; periampullary cancer; portal blood.

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Figures

Figure 1.
Figure 1.
The associations between CTC and (A) tumor volume and (B) Ki-67 in patients with periampullary tumors during curative surgical resection. CTC, circulating tumor cell.

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