Peritoneal Tumorigenesis and Inflammation are Ameliorated by Humidified-Warm Carbon Dioxide Insufflation in the Mouse

Annals of Surgical Oncology
Sandra CarpinteriRobert G Ramsay

Abstract

Conventional laparoscopic surgery uses CO2 that is dry and cold, which can damage peritoneal surfaces. It is speculated that disseminated cancer cells may adhere to such damaged peritoneum and metastasize. We hypothesized that insufflation using humidified-warm CO2, which has been shown to reduce mesothelial damage, will also ameliorate peritoneal inflammation and tumor cell implantation compared to conventional dry-cold CO2. Laparoscopic insufflation was modeled in mice along with anesthesia and ventilation. Entry and exit ports were introduced to maintain insufflation using dry-cold or humidified-warm CO2 with a constant flow and pressure for 1 h; then 1000 or 1 million fluorescent-tagged murine colorectal cancer cells (CT26) were delivered into the peritoneal cavity. The peritoneum was collected at intervals up to 10 days after the procedure to measure inflammation, mesothelial damage, and tumor burden using fluorescent detection, immunohistochemistry, and scanning electron microscopy. Rapid temperature control was achieved only in the humidified-warm group. Port-site tumors were present in all mice. At 10 days, significantly fewer tumors on the peritoneum were counted in mice insufflated with humidified-warm compared to dry...Continue Reading

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Citations

Dec 29, 2017·Nature Reviews. Clinical Oncology·Jonathan G HillerErica K Sloan
Dec 2, 2017·The British Journal of Surgery·S CarpinteriR G Ramsay
Sep 22, 2018·Prenatal Diagnosis·Sasha SkinnerRyan Hodges
Oct 5, 2018·Prenatal Diagnosis·Sasha SkinnerPhilip DeKoninck
Mar 6, 2019·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·M Sanz Cortes
Nov 30, 2018·Minerva ginecologica·Jena L MillerAhmet A Baschat
Jun 18, 2020·Advanced Healthcare Materials·Leen Van de SandeWim Ceelen
May 12, 2018·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·A A BaschatJ L Miller
Dec 5, 2019·Pleura and Peritoneum·Timothy ChittleboroughRobert George Ramsay
May 8, 2018·Clinical & Experimental Metastasis·Maria AlievaMarike L D Broekman
Mar 1, 2016·Pleura and Peritoneum·Félix GremonprezWim Ceelen

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Methods Mentioned

BETA
Scanning Electron Microscopy
fluorescence imaging

Software Mentioned

GraphPad Prism
Maestro

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