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Published in: Surgery Today 10/2014

01-10-2014 | Original Article

The impact of surgical extent and sex on the hepatic metastasis of colon cancer

Authors: Liat Sorski, Ben Levi, Lee Shaashua, Elad Neeman, Marganit Benish, Pini Matzner, Aviad Hoffman, Shamgar Ben-Eliyahu

Published in: Surgery Today | Issue 10/2014

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Abstract

Purpose

Extensive oncological surgeries were previously suggested to increase cancer recurrence rates. We herein studied the impact of different surgical procedures and sex on colorectal cancer liver metastasis, employing several tumor inoculation approaches in BALB/c mice.

Methods

Experimental hepatic metastases of the syngeneic CT26 colorectal cancer line were induced either by intra-portal inoculation or intra-splenic inoculation, employing different tumor loads. Following intra-splenic inoculation, the entire spleen or an injected hemi-spleen was removed. Additionally, the magnitude of the surgical trauma accompanying the injection procedure was manipulated.

Results

Increasing the surgical trauma by adding laparotomy or extending the length of the surgery and hypothermia did not significantly affect the number of liver metastases or liver weight for any of the injection methods and tumor loads. The development of metastasis was significantly greater in males than in females under all conditions studied—a difference not explained by the direct effects of sex hormones on in vitro CT26 proliferation or vitality.

Conclusion

Concurring with less controlled clinical observations, the surgical extensiveness did not significantly affect CT26 hepatic metastasis, potentially due to a ceiling effect of the surgical trauma on the metastatic process. The sexual dimorphism observed for the CT26 metastasis should be investigated in the context of surgical stress and considering anti-CT26 immunoreactivity.
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Metadata
Title
The impact of surgical extent and sex on the hepatic metastasis of colon cancer
Authors
Liat Sorski
Ben Levi
Lee Shaashua
Elad Neeman
Marganit Benish
Pini Matzner
Aviad Hoffman
Shamgar Ben-Eliyahu
Publication date
01-10-2014
Publisher
Springer Japan
Published in
Surgery Today / Issue 10/2014
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-013-0768-1

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