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The impact of carbon dioxide and helium insufflation on experimental liver metastases, macrophages, and cell adhesion molecules.

机译:二氧化碳和氦气吹入对实验性肝转移,巨噬细胞和细胞粘附分子的影响。

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Background: Laparoscopic insufflation, proposed to reduce hepatic perfusion, may enhance hepatic tumor spread. It is unknown whether intraabdominal pressure or the gas itself influences hepatic tumor growth. In contrast to carbon dioxide, the alternative gas helium is believed to reduce malignant cell growth. Methods: For this study, 36 WAG/Rij rats were randomized in two experimental groups. The animals were laparoscopically insufflated with carbon dioxide ( n = 19) or helium gas ( n = 17). Liver metastases were induced by laparoscopic injection of 50,000 CC531 cells into the portal vein. Macroscopic and microscopic analyses of CC531 tumor cell growth, macrophages, and CD44v5, v6 were performed. Data were analyzed by Kruskal-Wallis, Dunn, and Holm tests. Results: No significant differences in macroscopic and microscopic analyses were found between carbon dioxide and helium gas insufflations ( p > 0.05). Conclusions: Recent studies have shown that insufflation with carbon dioxide may result in increased hepatic tumor growth. The current study comparing carbon dioxide and helium insufflations could show for the first time either oncologic nor immunologic differences in relation to the liver between two different gases. In conclusion, elevated intraabdominal pressure during gas insufflation is responsible for hepatic disadvantages during pneumoperitoneum, not carbon dioxide gas itself.
机译:背景:腹腔镜吹气,建议减少肝灌注,可能会增强肝肿瘤的扩散。腹内压力或气体本身是否会影响肝肿瘤的生长尚不清楚。与二氧化碳相反,替代性氦气被认为可以减少恶性细胞的生长。方法:本研究将36只WAG / Rij大鼠随机分为两个实验组。腹腔镜下给动物注入二氧化碳(n = 19)或氦气(n = 17)。腹腔镜向门静脉注射50,000 CC531细胞诱导肝转移。进行了CC531肿瘤细胞生长,巨噬细胞和CD44v5,v6的宏观和微观分析。数据通过Kruskal-Wallis,Dunn和Holm检验进行分析。结果:二氧化碳和氦气吹入之间的宏观和微观分析均无显着性差异(p> 0.05)。结论:最近的研究表明,二氧化碳吹入可能导致肝肿瘤生长加快。目前比较二氧化碳和氦气吹入的研究可能首次显示出两种不同气体之间在肝脏方面的肿瘤学或免疫学差异。总之,气体吹入期间腹腔内压力升高是造成气腹期间肝功能衰竭的原因,而不是二氧化碳气体本身。

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