Objective To evaluate the effect of improving microcirculation and preventing cell Ca 2+ overload in preventing the development of acute pancreatitis (AP).Methods 278 AP patients admitted from 1990 to 1994 and from 1995 to 1999 were retrospectively analyzed. Routine conservative managements were performed in the first stage,improving microcirculation and preventing cell Ca 2+ overload were performed in the second stage.Results During the first period,there were 124 patients with AP.The conversion of mild AP to severe AP developed in 28 of 120 patients with mild AP.18 of 32 patients with severe AP developed systemic complications,24 patients developed local complications,there were 9 deaths.During the second period,154 cases were treated ,the conversion of mild AP to severe AP presented in 16 of 149 patients with mild AP. 4 of 21 patients with severe AP presented systemic complications,19 patients presented local complications, 3 patients died.Conclusion Improving pancreatic microcirculation and preventing pancreatic cell Ca 2+ overload are helpful not only to prevent the conversion of mild pancreatitis to severe pancreatitis,but also to prevent progressive pancreatic necrosis, and improve the prognosis of acute pancreatitis.

Objective To investigate the effects of preoperative selective gastric arterial chemoembolization on the tumor vasculature in patients with gastric carcinoma.Methods 40 patients with gastric cancer were divided into two groups :(1)gastric arterial influsion(GAI)group;and (2)gastric arterial chemoembolization(GAE)group.The peripheral vein plasma tumor necrosis factor(TNF ?) and thrombomodulin(TM)were determined before radiologic intervention(RI),and1d,3d after R1;and the gastric vein plasma TNF ? and TM were also determined during operation.The curative surgical resection of gastric cancer was performed between 7 and 10 days after treatment.Stomach histological alterations were observed postoperatively.Results Compared with GAI group ,the plasma TNF ? levels increased markedly at all the time points,and gastric vein plasma TM levels decreased siginificantly in GAE group (P