C N Gutt1, Z G Kim, D Hollander, T Bruttel, M Lorenz. 1. Department of General and Vascular Surgery, Johann Wolfgang Goethe University, Theodor Ster Kai 7, Frankfurt/Main, Germany. Gutt@em.uni-frankfurt.de
Abstract
BACKGROUND: Experimental and clinical studies, have suggested that the CO2 pneumoperitoneum influences the development of intraabdominal tumor dissemination and port site metastases. Previous experiments performed both in vitro and in vivo have proved that CO2 insufflation stimulates malignant cell growth. Therefore, we designed a study to investigate the influence of CO2 insufflation administered at different pressures on the growth of cultured human tumor cells. METHODS: Two human tumor cell lines (CX-2 colon adenocarcinoma, DAN-G pancreas adenocarcinoma) were exposed to a CO2 environment maintained at different pressures (0 mmHg, 6 mmHg, 12 mmHg). Tumor growth was determined at different times after exposure to CO2 using fluorescence photometry. Cytotoxity of the CO2 environment different pressures was investigated using flow cytometry. RESULTS: At 1-4 days after exposure to CO2 insufflation, CX-2 and DAN-G tumor cell growth was decreased significantly (p < 0.01). Proliferation of pancreatic adenocarcinoma DAN-G increased significantly from day 5 to day 15 independent of the insufflation pressure (p < 0.01). Proliferation of colon adenocarcinoma CX-2 increased significantly from day 5 to day 15 but was found to be dependent on the insufflation pressure. CX-2 growth increased significantly with higher pressures (p < 0.05). CONCLUSION: CO2 insufflation influences the growth of cultured human tumor cells. After a short period of suppression, the CO2 environment stimulates malignant cell growth. The insufflation pressure may also have additional effects in promoting tumor growth.
BACKGROUND: Experimental and clinical studies, have suggested that the CO2 pneumoperitoneum influences the development of intraabdominal tumor dissemination and port site metastases. Previous experiments performed both in vitro and in vivo have proved that CO2 insufflation stimulates malignant cell growth. Therefore, we designed a study to investigate the influence of CO2 insufflation administered at different pressures on the growth of cultured humantumor cells. METHODS: Two humantumor cell lines (CX-2colon adenocarcinoma, DAN-G pancreas adenocarcinoma) were exposed to a CO2 environment maintained at different pressures (0 mmHg, 6 mmHg, 12 mmHg). Tumor growth was determined at different times after exposure to CO2 using fluorescence photometry. Cytotoxity of the CO2 environment different pressures was investigated using flow cytometry. RESULTS: At 1-4 days after exposure to CO2 insufflation, CX-2 and DAN-G tumor cell growth was decreased significantly (p < 0.01). Proliferation of pancreatic adenocarcinomaDAN-G increased significantly from day 5 to day 15 independent of the insufflation pressure (p < 0.01). Proliferation of colon adenocarcinomaCX-2 increased significantly from day 5 to day 15 but was found to be dependent on the insufflation pressure. CX-2 growth increased significantly with higher pressures (p < 0.05). CONCLUSION:CO2 insufflation influences the growth of cultured humantumor cells. After a short period of suppression, the CO2 environment stimulates malignant cell growth. The insufflation pressure may also have additional effects in promoting tumor growth.
Authors: P Vukasin; A E Ortega; F L Greene; G D Steele; A J Simons; G J Anthone; L A Weston; R W Beart Journal: Dis Colon Rectum Date: 1996-10 Impact factor: 4.585
Authors: Kamil Torres; Anna Torres; Grzegorz J Staśkiewicz; Andrzej Chrościcki; Tadeusz Loś; Ryszard Maciejewski Journal: Surg Endosc Date: 2008-12-06 Impact factor: 4.584