Clinical controlled study of laparoscopic and open resection for gastrointestinal stromal tumors of stomach: A single center experience / 第二军医大学学报

Objective To compare the clinical efficacies between open resection and laparoscopic resection for gastrointestinal stromal tumors (GISTs) of stomach, and to discuss the indications of laparoscopic resection for GISTs. Methods A retrospective analysis was conducted in 174 patients with GISTs undergoing either open (open resection group [ORG], n = 76) or laparoscopic resection (laparoscopic resection group [LRG], n=98) from July 2008 to April 2014 at Changhai Hospital. The patients, according to tumor size (max diameter), were divided into two subgroups: <5 cm (113 cases: 35 cases for ORG and 78 cases for LRG), ≥5 cm and ≤10 cm (61 cases: 41 cases for ORG and 20 cases for LRG). The data for analysis included gender, age, tumor size, risk grading, mitotic rate, surgical type, operative time, intraoperation blood loss, postoperative hospital stay, postoperative feeding time, and 5-year tumor-free survival time, etc. Results The gender, age, tumor size, risk grading, mitotic rate and surgical type of patients had no significant differences between the laparoscopic and open resection groups for the two tumor size groups. When the tumor size <5 cm, the operation time was similar for the two surgical approaches, but the blood loss, postoperative hospital stay and postoperative feeding time were significantly reduced in LRG compared with ORG (P<0. 01). When the tumor size ≥5 cm and ≤10 cm, the operation time and postoperative hospital stay were similar between ORG and LRG, but the blood loss and postoperative feeding time of LRG were significantly less than those of ORG (P<0. 05). The 5-year tumor-free survival time was not significantly different between LRG and ORG for the two tumor size groups. Conclusion When the tumor size is <5 cm, laparoscopic resection is more safe and reliable than open resection for the gastrointestinal stromal tumor of stomach; when the tumor size is ≥5 cm and ≤10 cm, laparoscopic resection is safe and feasible after appropriate preoperative evaluation and patient selection.

Risk assessment of nitrate and petroleum-derived hydrocarbon addition on Contricriba weissflogii biomass, lifetime, and nutritional value.

Coastal diatoms are often exposed to both petroleum-derived hydrocarbon pollution and eutrophication. How these exposures influence on algal biomass, lifetime, and nutritional value are unknown. To examine a more accurate risk assessment of the pollutants on the role of diatoms in coastal ecosystem functions, Conticribra weissflogii was maintained at different concentrations of nitrate (N) and/or water-soluble fractions of No.0 diesel oil (WSF). Algal density, cell growth cycle, protein, chlorophyll a, superoxide dismutase (SOD) activity, and malonaldehyde (MDA) were determined for the assessment of algal biomass, lifetime, nutritional value, photosynthesis and respiration, antioxidant capacity, and lipid peroxidation, respectively.When N addition was combined with WSF pollution, the cell growth cycles were shortened by 27-44%; SOD activities were decreased by 1-64%; algal density, the concentrations of chlorophyll a, protein, and MDA were varied between 38 and 310%, 62 and 712%, 4 and 124%, and 19 and 233% of the values observed in N addition experiments, respectively. Coastal ecosystem functions were severely weakened by N and WSF additions, and the influence was increased in the order: N

Risk assessment of nitrate and oxytetracycline addition on coastal ecosystem functions.

Diatoms dominate phytoplankton communities in the well-mixed coastal and upwelling regions. Coastal diatoms are often exposed to both aquaculture pollution and eutrophication. But how these exposures influence on coastal ecosystem functions are unknown. To examine these influences, a coastal centric diatom, Conticribra weissflogii was maintained at different concentrations of nitrate (N) and/or oxytetracycline (OTC). Algal density, cell growth cycle, protein, chlorophyll a, superoxide dismutase (SOD) activity, and malonaldehyde (MDA) were determined for the assessment of algal biomass, lifetime, nutritional value, photosynthesis and respiration, antioxidant capacity, and lipid peroxidation, respectively. When N addition was combined with OTC pollution, the cell growth cycles were shortened by 56-73%; algal density, SOD activities, the concentrations of chlorophyll a, protein, and MDA varied between 73 and 121%, 19 and 397%, 52 and 693%, 19 and 875%, and 66 and 2733% of the values observed in N addition experiments, respectively. According to P-value analysis, the influence of OTC on algal density and SOD activity was not significant, but the effect on cell growth cycle, protein, chlorophyll a, and MDA were significant (P<0.05). The influence of N addition with simultaneous OTC pollution on the above six end points was significant. Algal biomass, lifetime, nutrition, antioxidant capacity, lipid peroxidation, photosynthesis, and respiration were all affected by the addition of OTC and N. Coastal ecosystem functions were severely affected by N and OTC additions, and the influence was increased in the order: N

Experimental study on anti-pyretic effect of gegen qin lian decoction and its compounds / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate composition principles of Gegen Qin Lian decoction through anti-pyretic experiment.</p><p><b>METHOD</b>Pharmacological effects of different compounds of Gegen Qin Lian decoction according to six hours temperature response index (TRI6) and average top temperature response height (deltaT) after the decoction was given to feverish animal model by inactived bacteria suspension.</p><p><b>RESULT</b>As for reducing six hour temperature response index, Scutellaria baicalensis root was the main effective drug. Pueraria lobata root could enforce the effect while Coptis chinensis rhizome and Glycyrrhiza uralensis root counteracted it. As for reducing average top temperature response height, the Effects of four herbal drugs were the same as for TRI6.</p><p><b>CONCLUSION</b>Of the compounds of Gegen Qin Lian decoction, as to the pharmcological anti-pyretic effects, the best one is the compound of Scutellaria baicalensis and Pueraria lobata roots.</p>