OBJECTIVE To study drug resistance status of infected bacteria in abdominal surgical wound for their countermeasures. METHODS The abdominal surgical infection of a hospital was investigated from Jan 2000 to Dec 2004.Bacterial isolation and identification were carried out complying with National Operation Procedure of The Clinical Laboratory.Drug sensitivity test was performed with KB method. RESULTS The infection rate was 4.1%.The species were predominated by Gram-negative bacilli(71.1%),especially Escherichia coli(17.2%),Pseudomonas aeruginosa(16.7%) and Klebsiella pneumoniae(12.7%),and they all beared high antibiotics resistance. CONCLUSIONS Special attention should be paid to abdominal surgical wound infection.

Objective To investigate the effects of two inhibitors of arachidonic acid metabolic pathway (5-cyclooxygenase blockade MK886 and COX 2 blockade celecoxib) on growth and VEGF mRNA expression of human pancreatic cancer cell SW1990.MethodsPancreatic cancer cells SW1990 were cultured with different concentrations of MK886,celecoxib,MK886 and celecoxib,then the cell proliferation was detected by using CCK-8,BLT1 mRNA,PGE2 mRNA and VEGF mRNA expressions were determined by RTPCR.ResultsAfter 10 μmol/L MK886 or 20 mmol/L celecoxib treatment for 24 h,the growth of SW1990 was greatly suppressed ( 1.80 ±0.06 vs 1.65 ±0.10,2.04 ±0.03 vs 1.86 ±0.02,P ＜0.01 ),and the growth suppression of SW1990 cells was increased accompanying the raised concentration of MK886 or celecoxib.After both MK886 and celecoxib treatment for 12 h,the growth of SW 1990 cells was much obviously suppressed (1.72 ±0.05 vs 1.52 ±0.05,P ＜0.01 ).After celecoxib treatment for 48 h,the BLT1 mRNA,PGE2 mRNA and VEGFmRNA expressions were not significantly changed,but the expressions of PGE2 mRNA were significantly decreased ( P ＜ 0.05 ).After MK886 or MK886 + celecoxib treatment,the expressions of BLT1 mRNA,VEGF mRNA were significantly decreased ( P ＜ 0.05 ),but the expressions of PGE2 mRNA were not significantly changed when compared to control group.ConclusionsTwo metabolic pathways of arachidonic acid have a close relation with occurrence and proliferation of pancreatic cancer,when both of the pathways were blocked,the proliferation of the pancreatic cancer cell was suppressed obviously.

Objective To investigate the expression of galectin-3 in pancreatic cancer cell and its effect on the proliferation and invasion of SW1990.Methods Immunocytochemistry and semi-quantitative RT-PCR was used to detect the expression of galectin-3 protein and mRNA in SW1990,PANC1 and ASPC-1 cell lines.Galectin-3 mono-antibody of different concentrations ( 1,2,3,5 μg/ml) was used to treat SW1990 cells for 24,48,72 h,CCK-8 kits were used to detect the proliferation in SW1990 cells; Transwell chamber was used to study the invasion in SW1990.Results Expression of galectin-3 protein and mRNA was present in SW1990,PANC1,and ASPC-1.Galectin 3 mono-antibody inhibited the proliferation and number of invasive cells in a dose and time dependant manner.The inhibitory rates at 72 h were 19.8％,29.9％ and 42.7％ in 2,3,5 μg/ml galectin 3 mono-antibody groups,the difference among them and control group was statistically significant ( P ＜ 0.05 ).The inhibite rate of permeating membrane cells in 3 μg/ml galectin-3 mono antibody was 37.1％,the difference between this group and control group was statistically significant (P ＜0.05 ).ConcLusions Galectin-3 is highly expressed in pancreatic cancer cells.Galectin-3 antibody can inhibit the proliferation and migration capability of SW1990 cells.