Animals ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Cell Hypoxia ; Cytokines ; metabolism ; Epithelial-Mesenchymal Transition ; Head and Neck Neoplasms ; metabolism ; pathology ; Humans ; Hypoxia-Inducible Factor 1 ; metabolism ; Transcription Factors ; metabolism

Both pretreatment of lignocellulose and its saccharification process are treated with ultrasonic wave.The morphology,structure and crystal performance of the original and treated lignocellulose sample were characterized by SEM and FTIR.Moreover,the changes of raw materials caused by different pretreatment ways and the affect of saccharification rate brought about by ultrasonic wave were also studied.The result shows that the ultrasonic wave decreases the crystallinity of lignocellulose destroying the intermolecular hydrogen bonding effectively and improves the degradation rate of lignin and the saccharification rate of zymohydrolysis availably.The mechanism of activation of ultrasonic wave in zymohydrolysis process was discussed primarily.

ObjectiveTo observe effects of early rehabilitation and hyperbaric oxygen treatments on stroke patients.Methods80 patients were randomly divided into rehabilitation group (40 cases) and control group (40 cases). Patients in rehabilitation group were treated with rehabilitation and hyperbaric oxygen treatments; patients in control group were treated only with hyperbaric oxygen treatment. The activities of daily living (ADL) were assessed by modified Barthel index (MBI), and the cognition function was measured by mimi-mental state examination (MMSE).ResultsAfter treatment the scores of MMSE and MBI of two groups increased (P<0.05) and scores of rehabilitation group were higher than that of control group (P<0.05); the process of scores in rehabibilitation group were obviously superior to that in control group (P<0.001).ConclusionEarly rehabilitation and hyperbaric oxygen treatments can obviously improve cognition function and ADL of stroke patients.

BACKGROUND:In vitro culture of sufficient vaginal epithelial cels and smooth muscle cels is the key for vaginal tissue engineering. However, the culture, purification and passage of vaginal epithelial celsin vitro are difficult. Primary culture and passage of vaginal epithelial cels from large animals such as canines has not been reported. OBJECTIVE:To establish a stable method of culturing canine vaginal epithelial cels and smooth muscle cels. METHODS: Vaginal epithelial cels were isolated from the vaginal specimens by enzymatic digestion with Dispase and trypsin separately, and cultured in keratinocyte serum-free medium. Vaginal smooth muscle tissue were minced and digested with colagenase type II; the colected smooth muscle cels were cultured in DMEM culture medium containing 10% fetal bovine serum. The cultured cels were passaged regularly. Cel morphology and proliferation characteristics were observed and cel phenotypes were confirmed by morphology and immunohistochemistry staining. RESULTS AND CONCLUSION: Primary vaginal epithelial cels began to adhere after 24-36 hours, grew logarithmicaly after 4-5 days, and reached 70% confluence after 7-8 days; the epithelial cels showed a typical cobblestone, with no fibroblasts. Cultured epithelial cels passaged every 4-5 days and subcultured to 6-7 generations continuously. Immunohistochemical staining confirmed a positive staining for anti-pancytokeratin (AEl/AE3). Primary cultured smooth muscle cels adhered and grew after 24 hours. The smooth muscle cels were spindle-shaped and proliferated logarithmicaly. After 4 days, primary cultured smooth muscle cels were confluent and showed a typical shape of “peaks and valeys”, and then the cels could be passaged every 3-4 days and passaged 7-8 generations. Immunohistochemistry staining showed α-actin staining was positive. These findings indicate that canine vaginal epithelial cels and smooth muscle cels could have a long-term stable culture and proliferation, to provide adequate seed cels for vaginal tissue engineering.

Objective To analysis effect of compound amino acid 15 peptide 2 on levels of tumor markers in serum of postoperative patients with liver cancer.Methods 42 postoperative patients who were diagnosed with liver cancer were collected.All patients were randomly divided into experimental group and control group, 21 cases in each group.The two groups of patients were given the corresponding parenteral nutrition therapy, after treatment, the serum tumor markers, T lymphocytes, liver function and nitrogen balance related indicators in all patients were detected.Results After treatment, compared with control group, the serum alpha fetal protein(AFP),carbohydrate antigen 19-9(CA19-9) and carcino embryonie antigen(CEA) levels were lower in the experimental group (P<0.05); the serum CD3 +T cells, CD4 +T cells and CD4 +/CD8 + ratio levels were lower in the experimental group (P<0.05); the serum alanine amino transferase (ALT), aspartate aminotransferase (AST) and total bilirubin(TBIL) levels were lower in the experimental group (P<0.05); the patients in the experimental group changed to positive nitrogen balance(P<0.05).Conclusion The diluted compound amino acid 15-2 injection for intravenous injection,can significantly reduce the level of serum tumor markers in patients with liver cancer, improve the immune function of patients, correct negative nitrogen balance, protect liver function.

Objective To evaluate the feasibility of bladder extracellular matrix (BACM) seeding with autologous cultured vaginal smooth muscle cells (VSMC) repaired rabbit vaginal defect.Methods This study included 24 female rabbits.BACM and vaginal acellular matrix (VACM) were obtained from 8 rabbits by decellularization process.The other 16 rabbits were randomly divided into experimental and control groups.Vaginal tissue biopsies ( ～ 1 cm2) were harvested from female New Zealand rabbits.VSMC were cultured and stained with a-smooth muscle actin antibodies. Cultured VSMC cells were seeded on BACM ( experimental group) or VACM ( control group) at a cell density of 1 × 107 cells/cm2.The cell-seeded matrixes were cultured for 5days.In experimental group of 8 rabbits,a 2 cm segment of vagina was resected and replaced with BACM seeding with VSMC.Then the regenerative segment was studied with histological technique by hematoxylin-eosin staining after 3,6 and 12 weeks postoperative aud vaginography was performed at 12 weeks postoperative.The 8 rabbits in control group underwent the exact same procedure as above but the vaginal defect was repaired with VACM seeding with VSMC,Results The prepared BACM and VACM were transparent,HE staining and scanning electron microscopy showed the two acellular matrix was both consisted of abundant network of fibers with the regular arrangement,without cellular debris.Primary culture of VSMC was successfully established and passaged,and was uniformly spindle-shaped in the confluent state and showed a characteristic hill and valley'formation.Immunohistochemical staining showed VSMC in culture stained positively with a-smooth muscle actin antibodies.VSMC began to adhere to the BACM 5 hour after implanting and the number of the adhered cells increased with time.Cells gradually expanded and showed the typical morphology of smooth muscle cells.Three weeks after implantation in vivo,the luminal surface of matrix was completely covered by vaginal epithelial tissue,a layer of smooth muscle cells was formed in the outer surface of the matrix.Multilayered vaginal epithelial and improved development of organized muscle bundles was observed after 6 weeks.The regenerative tissue was equivalent to the normal vaginal tissue at 12 weeks postoperatively.Vaginography demonstrated the maintenance of full patency and a wide vaginal caliber without fibrosis and graft rejection.There was no significant difference in all evaluated items between experimental and control groups.Conclusions BACM has the same regenerative process as VACM in the replacement of vaginal defect.Moreover,BACM has wider source and appears to be an suitable material for vaginal replacement.

Objective To evaluate the clinical value of electron beam computed tomography (EBCT)in the diagnosis of atherosclerotic aortic ulcer.Methods Sixty-eight consecutive patients(55 men and 13 women,aged 40—85 years,mean 65.12?9.55 years)with atherosclerotic aortic ulcer,who underwent EBCT scans from December 2001 to December 2004,were studied retrospectively.Contrast- enhanced continuous volume scanning(CVS)was performed by Imatron C-150XP EBCT scanner with 6 mm or 3 mm slice thickness and 100 milliseconds acquisition time.The scan was started 18—30 s after the injection of 80—100 ml contrast medium at the rate of 3.5—4.5 ml/s.Results In sixty-eight patients with atherosclerotie aortic ulcer,50 patients had acute aortic syndromes,36 had intramural hematomas,15 had atherosclerotic aortic aneurysms,3 had aortic dissections.46 patients with progresive ulcer usually had acute aortic syndrome while 22 patients with stable ulcer didn't(P

Adenocarcinoma ; diagnosis ; metabolism ; pathology ; Carcinoma, Signet Ring Cell ; diagnosis ; metabolism ; pathology ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Neoplasm, Residual ; metabolism ; Prostatic Hyperplasia ; metabolism ; Prostatic Intraepithelial Neoplasia ; metabolism ; Prostatic Neoplasms ; diagnosis ; metabolism ; pathology ; Racemases and Epimerases ; metabolism ; Sensitivity and Specificity

Objective To describe the genetic epidemiologic features of alopecia areata (AA) patients in China and to presume the possible genetic mo del of AA.Methods A case-controlled study of 1032 AA patients was performed to analyze the effect of genetic factors on the liability to AA.Complex segreg ation and heritability analysis were performed using Falconer's method and SAGE-REGTL programs.Results The mean age of onset was 28.98 ? 13.43 years.The d ifference in the mean age of onset was not significant between males and females.A total of 82.6 percent of patients experienced their first episode of AA befo re the fourth decades of life.A positive family history of AA was obtained in 8 7 patients (8.43%).The prevalences of AA were 1.58%,0.19% and 0.03% in the firs t-,second-and third-degree relatives of the probands respectively,which were significantly higher than those in the controls(P

Objective:The present study aims to evaluate the chemopreventive effect of celecoxib combined with tamoxifen on breast tumor induced by methylnitrosourea (MNU) in rats. Methods:A total of 140 SD female rats were injected with MNU to estab-lish breast tumor models. The rats were divided subsequently into control, celecoxib, tamoxifen, and combination groups. The occur-rence rates, volumes of breast tumor, and expression levels of cyclooxygenase 2 (COX-2) and c-erbB-2 were observed. Results:The tu-mor occurrence rates were lower in the celecoxib and tamoxifen groups than in the control group. The combination group exhibited the lowest tumor-occurrence rate. The tumor volumes of the celecoxib and tamoxifen groups were lower than that of the control group. The combination group had the least tumor volume. The positive rates of COX-2 and c-erbB-2 in the celecoxib and combination groups were lower than those in the control and tamoxifen groups (P<0.05). Conclusion:The combination of celecoxib and tamoxifen can sig-nificantly suppress MNU-induced breast tumor in female rats.