This study was aimed to establish a method for assay of 4-terpineol, α-terpineol, bornyl acetate and methyl-n-nonylketone in Houttuynia cordata with gas chromatography-mass spectrometry (GS/MS) for the first time in order to provide experimental evidences for its quality control. Undecylen was analyzed quantitatively. GC/MS method was used in the content determination of 4 kinds of components in Houttuynia cordata. GC conditions were that the temperature was firstly increased to 70oC for 5 min, and then 5oC·min-1 to 140oC for 5 min. Then, the temperature was increased by 10oC·min-1 to 250oC for 10 min. The temperature of the injection port was 230oC. The carrier gas was high purity helium. The flow rate was 1.0 mL·min-1. The split ratio was 10:1. The sample quantity was 1 μl. MS conditions were that the detector was MS, EI was 70ev, the temperature of four poles was 150oC, the temperature of ion source was 230oC. The results showed that there was good linearity of four components, which were 4-terpineol, α-terpineol, bornyl acetate and methyl-n-nonylketone obtained within the ranges of 6.492~129.84μg·min-1, 1.097~21.944 μg·min-1, 12.128~242.56 μg·min-1, and 84.76~169.52 μg·min-1, respectively. The average recoveries of the four components were 81.2%, 80.6%, 88.3%, and 84.6%, respectively. The RSDs were 1.5%, 2.3%, 1.1%, and 0.7%, respectively. It was concluded that the method was simple, sensitive, and easy to operate. The simultaneous measurement of multiple indexes on the component for quality evaluation of Houttuynia cordata can effectively reflect the quality of Houttuynia cordata. It can also be used in the quality assessment of fresh Houttuynia c ordate .

Objective To observe the influence of direct peritoneal resuscitation on liver function in hemorrhagic shock rabbits with pyruvate peritoneal dialysis solution instead of lactate peritoneal dialysis solution. Methods 48 hemorrhagic shock rabbits were randomly divided into conventional intravenous resuscitation group (group A),intravenous resuscitation plus intraperitoneal injection of lactate peritoneal dialysis solution group (group B),intravenous resuscitation plus intraperitoneal injection of pyruvate peritoneal dialysis group(group C), intravenous pyruvate peritoneal dialysis resuscitation plus intraperitoneal injection of pyruvate peritoneal dialysis group(group D). The hemodynamic changes were observed and the AST and ALT were measured respectively before and 60 min after shock ,60 min and 180 min after resuscitation. The dry/wet weight ratio ,MDA and SOD of liver tissue were measured,and the liver morphological changes were observed. Results After the completion of shock resuscitation,MAP of all groups were almost restored to the basal level. 180 min after resuscitation,the MAP of animals in group A was lowered than that in group B,C and D(P<0.05). After shock,ALT and AST were signifi-cantly higher than those before shock ,but no significant difference was found between groups (P > 0.05). After resuscitation,ALT and AST continued to decline in all groups,but the decline range increased with the order of A, B,C,D group(P < 0.05). The water content and MDA in liver tissue decreased with the order of A,B,C,D group,while the SOD increased and the differences between groups were significant(P<0.05). And the degree of liver tissue morphological injury also relieved correspondingly. Conclusion Pyruvate substituting lactate peritoneal dialysis solution peritoneal resuscitation can be more effective in reducing liver damage of hemorrhagic shock rabbits.

Objective To observe the effects of peritoneal resuscitation by pyruvate replacing lactate peritoneal dialysis solution on the intestinal mucosal barrier in rabbits with hemorrhagic shock.Methods The hemorrhagic shock model was prepared in 48 healthy male rabbits by adopting the improved Wiggers method.Then the rabbits were randomly divided into the conventional intravenous resuscitation group (group A),conventional intravenous resuscitation plus intraperitoneal injection of lactate peritoneal dialysis solution group (group B),conventional intravenous resuscitation plus intraperitoneal injection of pyruvate peritoneal dialysis solution group (group C) and intravenous pyruvate peritoneal dialysis solution resuscitation plus intraperitoneal injection of pyruvate peritoneal dialysis solution group (group D).The levels of diamine oxidase (DAO) and lipopolysaccharide (LPS) were measured before shock,at 60 min after shock,at 60,180 min after resuscitation.At the end of observation,the ileum tissues were taken from the 5 cm away from the ileocecal region for measuring the dry/wet ratio,malondialdehyde (MDA) level and superoxide dismutase (SOD) activity and their morphological changes was observed.Results There was no statistical difference in the plasma levels of DAO and LPS before shock among the four groups (P＞0.05);which at 50 min after shock were increased,but the comparison among the groups had no statistical difference (P＞0.05);the plasmas levels of DAO and LPS at 60,180 min after resuscitation in the group A,B,C and D were decreased in turn (P＜0.05).The MDA levels of ileum tissues after 180 min of resuscitation in the group A,B,C and D were decreased in turn (P＜0.05),but the SOD activties and tissue dry/wet mass ratios were increased in turn (P＜005),moreover the tissue injury degrees were also relieved in turn.Conclusion The peritoneal resuscitation by pyruvate replacing lactate peritoneal dialysis solution can more effectively protect the intestinal tissue cells and reduce intestinal mucosal damage in hemorrhagic shock rabbits.