Objective To study the expressions of phosphatese and tensin homolog deletedin chromosom ten (PTEN),Fas/FasL system and matrix metalloproteinnases-2 (MMP-2) in human gastric cancer.Methods Seventy-five cases of gastric carcinoma were selected from paraffin wax embodied specimens with full clinicopathological data,and another 15 cases of normal gastric mucosa specimens were selected as the control group.SP immunohistochemistry was used to measure the expressions of PTEN,Fas/FasL and MMP-2 in them.The data was statistically analyzed by ?2 test and relative analysis.Results The expressions of PTEN,Fas/FasL and MMP-2 were correlated with the lymphatic metastasis,degree of infiltration,clinical TMN stage and pathological histological differentiated degree of gastric cancer (P

Objective To investigate the effect of physical training on plasma N-terminal pro-brain natri- uretic peptide(NT-proBNP)levels in patients with chronic heart failure(CHF).Methods Eighty NYHAⅡ-ⅢCHF patients were randomly divided into a training group(n=42)and a control group(n=38).A 6-minute walk- ing test was performed within 24 hours after the patients were admitted.The 6-minute walking distance and plasma NT-proBNP levels were determined before and after 8 weeks of programmed physical training.The patients of both groups were treated with routine drugs for heart failure.6-minute walk training was only performed in the training group twice a day for 8 weeks.Results Physical training could significantly reduce plasma NT-proBNP levels and improve performance on the 6-minute walking test.Conclusions Physical training could significantly reduce plas- ma NT-proBNP levels and improve the motor function of patients with CHF,and could be helpful in delaying the de- velopment of CHF.

Objective To investigate change of chemokine mRNA and protein in the patients with diabetes mellitus(DM)complicated infection.Methods Fourty-eight patients with DM complicated infection were studied.Expression of mRNA and protein of monocyte chemoattractant protein-1(MCP-1)and interleukin 8 (IL-8)were measured by FQ-PCR,RT-PCR and ELISA.The relationship between hs-CRP,PMNL,IL-8 and MCP-1 were analyzed.Results Expression of mRNA and protein of MCP-1 and IL-8 were increased in the DM patients complicated infection.MCP-1 mRNA(mesured by FQ-PCR)was positively correlated with the protein(IL-8 r = 0.33;MCP-1 r = 0.88;P

Objective To investigate the effects of Xuebijing injection on the production of ICAM-1 and its counterreceptor(LFA-1)in ANP of rats at different time points.Methods ANP was induced by multiple points in- jection of 5% chenodeoxycholic acid into the pancreas,followed by ligation of pancreatic duct.Expressions of ICAM- 1 at different time points were assessed by immunohistochemistry method,the expressions of LAF-1 on neutrophils at different time points were detected by flow cytometer.The effect of Xuebijing injection was also evaluated by de- tecting the output of ascitic fluid,amylase level and histological changes in pancreas and lungs.Results The expres- sions of ICAM-1 in pancreas and lung of Xuebijing injection group decreased significantly than those in ANP group at most time points during the research period(P

Objective To investigate the expressions of CXCR4 in Barrett esophagus (BE), esophageal adenocarcinoma (EADC) and esophageal squamous cell carcinoma (ESCC), and its relationship with pathology, clinical staging and lymph node metastasis. Methods The expressions of CXCR4 in 56 cases of normal esophageal mucosa, 80 BE (including 22 BE with multifocal dysplasia), 25 EADC and 48 ESCC were examined with immunohistochemical method. Results CXCR4 was expressed in most samples of BE (80. 8% ), EADC (68. 0% ) and ESCC (78.4%) without significant difference ( P ＞ 0. 05 ), which was significantly higher than that in normal esophageal mucosa (39. 3%, P ＜0. 01 ). The level of CXCR4 expression in BE, EADC or ESCC were not related with gender, age, or location of the foci ( P ＞ 0. 05). There was no significant difference in CXCR4 expression between BE without dysplasia or BE with multifocal dysplasia ( P ＞ 0. 05 ). CXCR4 expression level in well-differentiated EADC was significantly higher than that of mild or poorly differentiated (P ＜ 0. 05 ). CXCR4 expression level was higher in EADC with lymph node metastasis than those without ( P ＜ 0. 05 ). CXCR4 level in ESCC with TNM staging grades Ⅲ -Ⅳ was higher than that of grades Ⅰ - Ⅱ, and this variable was also higher in cases with lymph node metastasis than those without (P ＜ 0. 05), so was the case of well and poorly differentiated ESCC (P ＜ 0. 01 ). Conclusion Increased expression level of CXCR4 may be a common feature of EADC and ESCC, which is irrelevant to pathological types. CXCR4 level rises at the stage of BE, which is associated with the degree of tumor differentiation, lymph node metastasis and TNM staging. CXCR4 expression is of guiding significance in the diagnosis of BE, EADC and ESCC, and is the potential drug target.

Objective To determine the clinical value of the multi-slice spiral CT virtual endoscopy (CTVE) for the detection of biliary pancreatic junction lesions. Method MSCT and virtual endoscopic reconstruction were performed in 30 healthy volunteers, 18 cases of common bile duct stones and 7 cases of ampullary carcinoma to observe patterns of duodenal papilla and measure its size.Results Reconstructed image of CTVE showed that the normal duodenal papilla was nodular in 16,shaped like "V" in 8 "Y-shaped" in 6 of the healthy volunteers. Its diameter was (0.84±0.17)cm. In the patients with common bile duct stones, it was nodular and its diameter (1.72±0.32)cm. In the patients with ampullary cancer, it was of irregular protruded type and its diameter (2.30±0.85)cm.There was significant difference among the 3 groups in the overall mean values (P＜0.01). Conclusion CTVE is a convenient, non-invasive and precise clinical examination to observe the shape of duodenal papilla and determine its size.

Objective To study the expression of HIF-1α and survivin in gastric cancer,and to study their role in tumor angiogenesis,invasion and metastasis.Methods Immunohistochemieal technique was used to detect the expression of HIF-1α and survivin in 54 cases of gastric cancer.Results The expression rate of HIF-lα in gastric cancer (74.1%) was higher than that in normal gastric tissue (O),The expression of HIF-1α in gastric cancer was associated with TNM staging,invasive depth and lymph-node metastasis (P<0.05),The expression of survivin in gastric cancers was high (72.2%),and increased with invasive depth (P<0.01),clinical stages (P<0.01) and lymphatic metastasis (P<0.05).There was a positive correlation between expression of HIF-1α and Survivin (r:0.31,P<0.05).Conclusion HIF-1α and Survivin could be factors in the judgement of the degree of malignancy of gastric cancer and prediction of its prognosis.

Cardia ; pathology ; surgery ; China ; epidemiology ; Esophageal Neoplasms ; diagnosis ; epidemiology ; surgery ; Esophagectomy ; Esophagoscopy ; Gastroscopy ; Humans ; Mass Screening ; Minimally Invasive Surgical Procedures ; Precancerous Conditions ; diagnosis ; surgery ; Stomach Neoplasms ; diagnosis ; epidemiology ; surgery

The biochemical mechanism of degrading keratins by S.fradiae var S-221 was primarily studied.The compounds (Na_ 2 SO_ 4 , Na_ 2 SO_ 3 and sulfdryl acohol), which respecitively enhance specific activity of keratinase, activate keratinase intensively and mainly act on the disulfide bonds reductase in the keratinase, Na_ 2 SO_ 3 activates intensively both disulfide bonds reductase and polypeptide hydrolytase at 0.01 mol/L, whereas Na_ 2 S_ 2 O_ 3 , which acts on the disulfide bonds reductase, inhibits keratinase.On the condition that substrate, keratins exists, S.fradiae var S-221 is induced to produce exo-keratinase, which is a multiproteinase, containing disulfide bonds reductase, which is a key enzyme degrading keratins, then, with polypeptidic, hydrolytase, graduately hydrolyzates denatured keratins into polypeptides, oligopeptides and free amino acids, so that keratins have been decomposed completely.Sulfur in the keratins was transferred into sulfhydryl compounds, H_ 2 S and sulfates in the course of keratinolysine.

Rice straw degradation with white rot fungi and cellulose multienzyme was studied. The results indicated that the LiP, MnP activity produced by P. chrysosoporium 172 could reach 28.3U/g and 12.6U/g respectively under suitable culture condition. And the lignin was degraded efficiently in contrast with the cellulose and hemicellulose in rice straw solid fermentation. Following treatment with white rot fungi, using multienzyme produced by A. niger NL-1 could greatly accelerate the decomposition of rice straw. The decomposition rate of cellulose, hemicellulose, lignin and the loss rate of dry material were 53.8%,57.8%,44.5% and 46.3% respectivity when hydrolysis rice straw 48h with cellulase multienzyme (including 3 IU /g rice straw) after culture P. chrysosoporium 172 for 10 days. Scanning electron microscope analysis showed the cell wall of rice straw was destroyed severely, and the whole tissue got loosely. These results demonstrated the rice straw had been decomposed efficiently and completely.