Objective To evaluate the clinical effectiveness and safety of transcatheter arterial chemoembolization (TACE) combined with argon-helium cryotherapy system (AHCS) for primary hepatic carcinomas (PHC), and to provide references for clinical practice and research. Methods Such databases as The Cochrane Library, PubMed, EMbase, Web of Science, CBM, CNKI, VIP and WanFang Data were searched, and other sources like the relavant references were also retrieved to collect the randomized controlled trials (RCTs) about TACE combiend with AHCS for PHC published by May 1st, 2012. After literature screening, data extraction and quality evaluation performed by two reviewers independently according to the inclusion criteria, the meta-analysis was conducted using RevMan 5.1 software. Results A total of 16 RCTs involving 1 467 patients were included. The results of meta-analysis showed: a) The TACE+AHCS group was superior to the TACE alone group in total effective rate, complete necrosis rate, 0.5-, 1-, 1.5-, 2- and 2.5-year survival rates, AFP, CD4 and Th/Ts cells, and there were significant differences (Plt;0.05); and b) The TACE+AHCS group was superior to the AHCS alone group in 0.5-, 1.5-, 2- and 2.5-year survival rates, AFP and Th/Ts cells, and there were significant differences (Plt;0.05). Conclusion Compared with the TACE or AHCS alone, TACE combined with AHCS can improve long-term survival rate and short-term curative effect, and improve PHC patients’ immunity. However, its long-term curative effect and safety still needs to be further verified by more large sample and high quality RCTs.
In order to rise the efficiency of combined therapy and evaluate the value and status of cryosurgery in advancedstage liver cancer, liquid nitrogen was employed in treating 90 patients with hepatic carcinoma in our department from Nov. 1994 to Dec. 1997. The results revealed that cryotherapy could induce unrecoverable coagulation necrosis of the tumors. The levels of serum AFP decreased after cryosurgery and one patient has been surviving for three years. The authors believe that cryosurgery is an effective method for unresectable lesions of hepatic carcinoma and has a probability in decreasing its postoperative recurrent rate.
【Abstract】 Objective To establ ish a animal model of osteonecrosis of femoral head in canine l ike human.Methods The thermal field of canine’s femoral head was three-dimensionally analyzed with fluent 6.2 software so that the best cryosurgery patent could be designed to maximize the osteonecrosis and minimize extra surgery trauma with the cryosurgery system invented by Shanghai Jiaotong University. Liquid nitrogen was pressurized to 0.5 MPa, poured into femoral head for 6.5 minutes, rewarming to 2 for 5 minutes and then repoured into it again for another 6.5 minutes. Ten three-foot canines were conducted as the animal models of osteonecrosis of femoral head according to the method above. At the end of followup,the results were reviewed by radiologic and pathologic check. Two dogs were conducted as control group. Results In the experimental group, one of the ten canines was testified to occur osteonecrosis of femoral head after one week pathologically, cell death and vessel breakage of cavitas medullaris in the femoral head was obvious under microscope; in other nine canines beingstill under follow-up, five with three-month follow-up at least progressed to the collapse of femoral head l ike human (Ficat III). In control group, no osteonecrosis was found. Conclusion Cryosurgery for osteonecrosis of the femoral head in three-foot canine model may become a method to establ ish the animal model of osteonecrosis of femoral head l ike human.
Objective To establ ish an animal model of osteonecrosis of the femoral head (ONFH) l ike human. Methods Ten healthy adult three-leg Beagle male dogs weighing (16.0 ± 1.6) kg were conducted as the animal model of ONFH according to the schedule of cryosurgery designed in advance in which l iquid nitrogen, pressurized to 0.5 MPa, was poured into the femoral head for 16.5 minutes. After rewarmed to 0℃ for 10 minutes, the l iquid nitrogen was repoured into the femoral head for another 16.5 minutes. At the end of the follow-up, the results were reviewed by pathologic check. One dog was conducted as control group. Results The first boundary temperature of (—27.9 ± 4.3)℃ was higher than the second boundary temperature (— 31.3 ± 4.7)℃ by —3.4℃ , and there was significant difference (P lt; 0.01). The diameter of the femoral head of (17.7 ± 1.1) mm was l inearly (^ y= — 2.6 － 2.409 x) correlated to boundary temperature by Pearson analysis, and the R rate was —0.977 (Plt; 0.05). Four dogs in experimental group progressed to collapse of the femoral head l ike human in the 6th month after operation. The rate of the femoral head collapse rose to 44.4%. In the control group, osteonecrosis was never found. Conclusion Cryosurgcry for osteonecrosis of the femoral head in the three-leg canine model may become a method to establ ish an animal model of ONFH l ike human.