ObjectiveTo investigate the survival of liver cancer cells in hypotonic solution, and provide a theoretical basis for the clinical application of warm distilled water to kill free intraperitoneal liver cancer cells. MethodsThe hepatocellular carcinoma cell line Hep3B were cultured by using different osmotic HEPES buffered solution (148 mOsmol/kg, 90 mOsmol/kg, and 0 mOsmol/kg) in vitro, and then the activity and status of the cells were observed by using the MTT assay and flow cytometry. ResultsOne hundred and forty-eight mOsmol/kg and 90 mOsmol/kg osmotic pressure solution had no obvious killing effect for hepatocellular carcinoma cell line Hep3B, the cells still had strong activity after 30 min. The 0 mOsmol/kg osmotic pressure distilled water had particular killing effect for hepatocellular carcinoma cells, with the prolongation of time and the killing effect was enhanced. It needs 10 min to destruct free cancer cells. ConclusionApplication of warm distilled water lavage in liver cancer surgery requires the continuing role of 10 min to kill the intraperitoneal free cancer cells, thereby preventing the occurrence of postoperative peritoneal metastasis.
Bones are stained into red color with feeding madder, but we do not know whether the fed madder can change the bone biomechanical properties and bone mineral contents in animals. In this research, we established a rat model with feeding madder. The bone biomechanical properties were detected by universal material mechanics, bone mineral contents were detected by inductively coupled plasma mass spectrometry and spectrometer, and red color material in bone was analyzed by high performance liquid chromatography. The results showed that bone biomechanical parameters in femur diaphysis in the 10% and 15% group rats were significantly higher than those in the control group after feeding madder for 6 months. The level of calcium, magnesium and zinc in femur diaphysis in 10% and 15% group rats were higher than those in the control group after feeding madder for 6 months. However, it was shown that the kidney congestion andhyperemia and the level of blood urea nitrogen and creatinine in the 15% group rats were significantly different compared to those in the control group rats after feeding madder for 6 months. The red colored material in bone is related to alizarin analyzed with high-performance liquid chromatography. The conclusion could be drawn that feeding 10% madder in diet was not toxic to the rats fed for 6 months, and it could improve bone biomechanical properties and increase bone mineral elements.
ObjectiveTo summarize the recent development of the magnetic compression anastomosis in surgery. MethodsThe abroad and domestic relevant literature about magnetic compression anastomosis was extensively reviewed, and comprehensive analyzed. ResultsMagnetic compression anastomosis in the reconstruction of the body lumen is a simple and effective way; laparoscopy combined with magnetic compression anastomosis has the advantages of small wound and quick recovery. Magnetic compression anastomosis has been increasingly used in cl inical practice. But its mechanism has not been fully revealed, and it is difficulty in expelling out of the magnet for the gastrointestinal and certain large-size lumen, so further research and optimization are still needed. ConclusionRelative to the traditional manual suture, magnetic anastomosis has great advantage, especially a combination of magnetic compression anastomosis and minimally invasive surgery has bright prospects for development.