OBJECTIVETo study the effect of angiogenesis inhibitor SU6668 on the growth and metastasis of gastric cancer in SCID mice.

METHODSMetastatic model was established by orthotopic implantation of histologically intact human tumor tissue into the gastric wall of SCID mice. Forty-eight mice were randomly divided into four groups, and saline, 5-FU, SU6668, and 5-FU plus SU6668 were administered by i.p. every day for 6 weeks after tumor implantation. The mice were killed and tumor weight, tumor inhibition rate, intratumoral microvessel density(MVD), apoptotic index(AI) and metastasis inhibition were evaluated.

RESULTSCompared with the control, tumor growth was significantly inhibited in mice treated respectively with 5-FU, SU6668 and 5-FU plus SU6668 with inhibition rates of 47.5%, 64.1% and 69.2% respectively. Decreased MVD and increased AI were noted in the mice treated with SU6668 and 5-FU plus SU6668. The incidences of liver and peritoneal metastases was significantly inhibited and decreased to 62.5%, 69.9% in SU6668 group, and 74.9%, 90% in 5-FU plus SU6668 group. The growth and metastasis of human gastric cancer implanted in SCID mice were significantly inhibited in SU6668 group and combined group, especially in combined group.

CONCLUSIONAngiogenesis inhibitor SU6668 has a strong inhibitory effect on tumor growth and metastasis of human gastric cancer transplanted in SCID mice, and has synergistic effect combined with cytotoxic agents.

Angiogenesis Inhibitors ; pharmacology ; therapeutic use ; Animals ; Apoptosis ; drug effects ; Cell Line, Tumor ; Drug Synergism ; Fluorouracil ; pharmacology ; therapeutic use ; Humans ; Indoles ; pharmacology ; therapeutic use ; Liver Neoplasms ; prevention & control ; secondary ; Male ; Mice ; Mice, SCID ; Neoplasm Transplantation ; Neoplasms, Experimental ; Neovascularization, Pathologic ; drug therapy ; Pyrroles ; pharmacology ; therapeutic use ; Stomach Neoplasms ; drug therapy ; pathology

OBJECTIVETo study the biological behavior of cardial cancer and its influence on surgical management.

METHODSComplete clinicopathologic data of 46 cases with cardial cancer undergoing radical gastrectomy was investigated retrospectively. The relationships between tumor Borrmann type, depth of invasion, growth pattern, lymph node metastasis and 5-year survival rate postoperative were analyzed.

RESULTSOf 46 cases, Borrmann type III, Type IV and Type II was 76% (35/46), 18% (8/46) and 6% (3/46) respectively; 5-year survival rate was 40% (14/35), 0 (0/8) and 100% (3/3) respectively. In respect of the depth of invasion, pT(2) was 31% (14/46) cases with 71% (10/14) lymph node metastasis; and 5-year survival rate was 64% (9/14). pT(3) was 15% (7/46) cases with 86% (6/7) lymph node metastasis; and 5-year survival rate was 57% (4/7). And pT(4) was 54% (25/46) cases with 92% (23/25) lymph node metastasis; and 5-year survival rate was 12% (3/25). The growth pattern in 87% (40/46) cases was infiltrative; and 5-year survival rate was 28% (11/40); the growth pattern in 13% (6/46) cases was expansive; and 5-year survival rate was 100% (6/6).

CONCLUSIOND(2)(+) radical total gastrectomy should be performed on the developed cardial cancer, and if necessary, resection of body and tail of pancreas should be chosen.

Aged ; Aged, 80 and over ; Cardia ; Female ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Invasiveness ; Prognosis ; Stomach Neoplasms ; pathology ; surgery

OBJECTIVETo investigate the expression of vascular endothelial growth factor C (VEGF-C) and survivin protein in human gastric carcinoma,and to evaluate their clinical implications.

METHODSThe expressions of VEGF-C and survivin protein in tumor tissues,matched para- tumor tissues from 97 cases with gastric cancer and normal tissues form 20 normal controls,were determined by immunohistochemistry. Their relationships with clinicopathological parameters were analyzed.

RESULTSThe positive rate of VEGF-C and survivin protein in tumor tissues (66.0% and 57.2%) was significantly higher than those in matched para-tumor tissues normal tissues (P< 0.05). There were no significant differences in VEGF-C expression considering tumor size,localization,histological grade,venous invasion,and distant metastasis (P > 0.05), while its expression was correlated with serosal infiltration, lymphatic invasion, lymph node metastasis and TNM stage III-IV (P< 0.05). The survivin expression was significantly related with serosal infiltration,lymphatic invasion, regional lymph node metastasis,distant metastasis, and TNM stage III- IV (P< 0.05), but not with histological grade, localization,venous invasion,and tumor size (P > 0.05). The 1, 3 and 5-year survival rates of the patients with positive VEGF-C or survivin protein were significantly lower than those of the patients with negative VEGF-C or survivin (P< 0.05), respectively. In additional,the expression of VEGF-C was positively correlated with survivin expression in gastric carcinoma (P< 0.01).

CONCLUSIONThe expressions of VEGF-C and/or survivin may be indicators for poor prognosis of gastric carcinoma.

Adult ; Aged ; Carcinoma ; metabolism ; pathology ; Female ; Follow-Up Studies ; Humans ; Inhibitor of Apoptosis Proteins ; Male ; Microtubule-Associated Proteins ; biosynthesis ; Middle Aged ; Neoplasm Staging ; Prognosis ; Stomach Neoplasms ; metabolism ; pathology ; Vascular Endothelial Growth Factor C ; metabolism

The distribution information of Lomatogonium rotatum. was collected by interview investigation and field survey, and 55 related environmental factors were collected, the habitat suitability study was conducted based on geographic information system (GIS) and maximum entropy model. The AUCs of ROC curve were both above 0.99, indicating that the predictive results with the maximum model were highly precise. The results showed that 13 major environmental factors have obvious influence on ecology suitability distributions of L. rotatum, including month average temperature of February et al., the suitable distribution areas are mainly concentrated in the east-central of Inner Mongolia, including Hexigten banner, Duolun county, Zhenglan banner et al., The zoning results basically coincide with the genuine producing areas, and further afford new suitable distribution areas, which can provide reference for L. rotatum's wild nursery and the siting of introduction and cultivation.
China ; Ecosystem ; Environment ; Gentianaceae ; growth & development ; Geographic Information Systems ; Rain ; Temperature

OBJECTIVETo investigate the diagnosis and treatment of benign duodenal tumor.

METHODSClinical data of 14 patients with benign duodenal tumor confirmed pathologically or by operation from Oct.1988 to Oct.2001 were analyzed retrospectively.

RESULTSOf 14 patients, 5 had Brunner's grand adenoma, 4 mesenchymoma, 2 leiomyoma, 2 hemangioma, 1 lipoma. Upper abdominal discomfort (64% ), gastrointestinal bleeding(50% ) and abdominal pain(20% ) were common manifestations. All cases received gastroscopy and only one case was diagnosed. Five cases received duodenoscope and the diagnosis was confirmed in 4 cases. Nine cases received hypotonic duodenography and lesions were found in 8 cases. Digital subtraction angiography was performed in 3 cases and detected all lesions. Computed tomographic scan and B-ultrasound were performed in 2 cases and only one case was diagnosed. Eleven cases (79% ) got definite diagnosis before operation. Tumor resection was performed in all patients. Perioperative death occurred in one patient. No recurrence occurred in 13 cases after following up from 2 to 11 years.

CONCLUSIONUpper abdominal discomfort and gastrointestinal bleeding are common features in patients with benign duodenal tumor. Duodenoscopy and hypotonic duodenography are good diagnostic approaches. Surgical tumor resection is the first choice of treatment.

Adult ; Aged ; Duodenal Neoplasms ; diagnosis ; pathology ; surgery ; Duodenoscopy ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Retrospective Studies

OBJECTIVETo evaluate the value of reoperation for local recurrence of rectal carcinoma.

METHODSThe data of 62 cases with post-operative local recurrence of rectal carcinoma were analyzed retrospectively.

RESULTSAll the 62 patients received reoperation. Thirty two of those patients were treated with radical resection (16 patients combined multiple organ resection), 6 palliative resection, 11 colostomy, and 13 laparatomy only. The 1-, 3- and 5-year survival rates in the patients accepted radical resection were 90.6%, 59.4% and 18.8% respectively. But in patients undergone palliative resection and combined therapy, survival time was 6-24 months with median survival time of 16 months. The patients, accepted laparatomy and intra-abdominal chemotherapy, all died within 2-14 months postoperatively. For patients with postoperative recurrence time >5 years, <2 years and 2-5 years, the reoperation resection rates were 100%(11/11), 62.9%(22/35), and 31.3%(5/16) respectively, and there were significant differences among 3 groups (P<0.01). The rate of reoperation resection of pure local recurrence was 80.0%(32/40). The rate of reoperation resection of local recurrence, associated with near organ invasion, was 27.3%(6/22). The difference was significant(P<0.01). The reoperation resection rate of first operation with Dixon or Miles was 61.9%(26/42) and 30.0%(6/20), and the difference was significant as well(P<0.05).

CONCLUSIONSThe recurrence of rectal carcinoma still needs positive operation in order to prolong the survival time and improve the quality of life of the patient. First operative procedure, post-operative recurrence time and recurrence type are important factors of reoperative resection.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; surgery ; Postoperative Period ; Rectal Neoplasms ; pathology ; surgery ; Reoperation ; Retrospective Studies ; Survival Rate ; Young Adult

Objective To investigate the presence and genetic background of 16S rRNA methylase gene and Aminoglycoside modifying enzymes(AMEs) genes in Klebsiella pneumoniae isolated from the People's Liberation Army 98th HospitaI,Huzhou district,Zhejiang province,China.Methods 25 strains of Klebsiella pneumoniae were isolated from the inpatienta between September,2005 and April,2006.6 kinds of 16S rRNA methylase gene (including armA,rmtA,rmtB,rmtC,rmtD and npmA ),6 kinds of AMEs genes [ including aac (3)-Ⅰ,sac (3)-Ⅱ,sac (6')-Ⅰ,aac (6')-Ⅱ,ant (3")-Ⅰand ant(2")-Ⅰ],intI1,intI2,intI3,mercuric reductase gene merA (merA gene were the collective genetic markers of transposona of Tn21 and Tn501 ) and tnpA ( tnpA gene were the collective genetic markers of transposons of Tn1,Tn2,Tn3 and Tn1000) were analyzed by PCR and verificated by DNA sequencing.Results In 25 strains of Klebsiella pneumoniae,the positive rate of genes of rmtB,sac (3)-Ⅱ,sac (6')-Ⅰ,ant(3")-Ⅰ and intI1 were 60.0%(15/25),4.0%(1/25),48.0%(12/25),60.0%(15/25) and 96.0%(24/25),respectively.The rest 12 kinds of genes were all tested negative.The total positive rate of 6 kinds of AMEs gene was 84.0%(21/25).Conclusion There were very high positive rate on both genes of rmtB and AMEs genotypes in Klebsiella pneumoniae isolated from inpatients,and this was the first report of the emergence of 16S rRNA methylase gene rmtB in Klebsiella pneumoniae identified in Zhejiang province,China.