ABSTRACT
Objective To explore the thermal effects of the second-generation argon plasma coagulation (VIO APC/APC2) on ex vivo human stomach tissue with different mode ,output power and application time .Methods The thermal effects of VIO APC were studied on fresh surgery-resected human stomach tissues .Different output powers were combined with mode "forced (F )","pulse , effect 1 (P1 )" and "pulse , effect 2 (P2 )";three application time ,the depth and maximum diameter of each injury were recorded .Results The depth of tissue injuries was correlated with output power (P<0 .001) ,energy (P=0 .008) and mode (P=0 .013) .The maximum diameter of injuries was correlated with output power (P<0 .001) ,application duration (P=0 .001) ,energy (P<0 .001) and mode (P=0 .001) .The incidence of harmful damage was only related to mode (P=0 .012) .The depth of tissue injuries was P1> F> P2 (P<0 .05) ,and the maximum diameter of injuries was P2> P1> F (P<0 .05) . Conclusion Different modes of VIO APC can create different thermal effects on the gastric tissues .Compared with F mode ,P1 mode creates deeper injuries while P2 mode creates larger but shallow injuries .All the three modes may cause injuries involving muscularis propria .
ABSTRACT
To evaluated the histological changes within the tegument of adult Fasciola gigantica (F. gigantica) that led to the gross changes that were visible externally. Methods: The effects of oleoresin extract of myrrh (Mirazid ? ), myrrh volatile oil and triclabendazole sulphoxide (reference drug) on the tegumental structure of adult F. gigantica following treatment in vitro had been determined by light microscopy. Results: The internal changes in the tegument observed in this study were compatible with surface changes seen in the previous scanning electron microscopy study, using the same drugs. The swelling of tegumental syncytium was a particular feature of their action, but its level was much greater with myrrh volatile oil, in which vacuolization of the tegument and loss of spines were observed. Conclusions: The present study demonstrated the fasciocidal properties of Mirazid ? oleoresin extract, and it might be possible to reinforce its fasciocidal activity by increasing its content of myrrh volatile oil.