Objective:To study the immune response to murine pancreatic carcinoma by bone marrow-derived dendritic cells(BM-DCs) modified with interleukin-23 after acquiring antigen from apoptotic pancreatic carcinoma cell.Methods:The murine IL-23 cDNA was sub-cloned into dual-expression vector.DCs were pulsed with apoptotic tumor cell antigen after transduced with interleukin-23 gene.The immune preventative and immunotherapeutic effects of DC vaccines on mice with pancreatic cancer were assessed.Results:IL-23 protein could apparently increase the antigen presenting ability of DC.After the vaccination of DC vaccines.IFN-? production in treatment group were significantly more than that of control group(P

ObjectiveTo study the surgical treatment of large bowel obstruction caused by colorectal carcinoma.MethodsRetrospective analysis of the experience of surgical treatment for the large bowel obstruction caused by colorectal carcinoma in 52 patients from 1995 to 1999 was performed. ResultsIn the 52 patients, the right hemnicolectomy was performed in 9 patients; left hemicolectomy with proximal colon fistulization was performed in 37patients;transvercolectomy was performed in 4 patients; sigmoid fistulization was performed in 2 patients for their rectum carcinoma couldn't be resected. The postoperative complication rate was 15.3%(8/52),and perioperative mortality rate was 3.8%(2/52). Conclusion More attention should be paid to large bowel obstruction caused by colorectal carcinoma. Selecting rational colectomy and appropriate perioperative management is important for reducing both complication and mortality rate.

Objective To explore the cultural method of lingual keratinocytes and make preparations for further investigation in using lingual keratinocytes as a new choice of seed cells for the reconstruction of tissue engineered corneal epithelium.Methods Keratinocytes were enzymatically dissociated from lingual tissue specimens using 0.25%disepase and 0.05%trypsin.The biological characteristics of the cells were observed through phase microscope.Meanwhile.1ingual kemtinoeytes were immtmohistochemically labeled with broad spectrum keratin antibody (AE1/AF3).Results The cells revealed the form of "road metal" and could be passed for 3 or 4 generations.Immunohistochemistry indicated that lingual keratinocytes were positive for AE1/AE3 staining.Condusion Lingual kemtinocytes of rabbits can be cultured with KSFM in vitm and magnitude quantity can be attained,laying a favorable foundation for lingual keratinocytes as a new choice of seed cells for corneal epithelium reconstruction with tissue engineering.

Objective To study the therapeutic effects of extracorporeal shock wave therapy (ESWT) on temporomandibular joint disorders (TMDs).Methods Sixty patients with a temporomandibular joint disorder were randomly divided into an ESWT group and a control group,each of 30.Both groups were given routine rehabilitation training,but the treatment group additionally received ESWT for 2 weeks.Fricton's index was used to evaluate temporomandibular joint function.The subjects used a visual analogue scale (VAS) to evaluate their pain levels.The SF-36 scale was applied to assess their life quality.Results After two weeks of treatment,the average assessment score and VAS score had decreased significantly in both groups.After treatment the average scores for mandibular movement,muscle palpation,joint noise and joint palpation,and the palpation,dysfunction and craniomandibular indexes were all significantly lower in the ESWT group than in the control group.Significant differences were also found in the average VAS scores and on the social functioning domain of the SF-36 between the ESWT group and the control group.Conclusion ESWT combined with rehabilitation training can significantly relieve the symptoms and pain of TMDs.

Background Seed cells and scaffold material are the important aspects of corneal tissue engineering research.Adipose-derived stem cells(ASCs) are becoming the focus of seed cells research because of their wide source,powerful proliferation and differentiation abilities.As biodegradable polymer,polylactic-co-glycolic acid(PLGA) has successfully build multiple tissues and organs.Objective Present study was to ascertain the biological characteristics of the rabbit ASCs and their biocompatibility with PLGA scaffold in vitro and to provide groundwork for further study on the reconstruction of tissue engineered corneal stroma.Methods Adipose cells were isolated from lipoaspirate of New Zealand white rabbit using collagenase Ι.The cells were cultured and passaged.The generation 4 cells were inoculated to culture plate with 6 holes at the density of 3×104/cm2,3×104/cm2,3×106/cm2 respectively and cultivated in ossification inducing medium,lipoblast inducing medium and chondroblast inducing medium to identify the characteristics of the cells.The multilineage differentiated cells were identified by alizarin red staining,oil red O staining and immunoinfluorescene technique.The generation 4 cells were re-suspended with DiO influorescence fluid at the density of 1×107/ml and seeded on PLGA scaffold to fabricate cell-PLGA constructs.Quantitative analysis of cell proliferation on PLGA was detected by Hoechst DNA assay.The attachment and growth of adipose-derived stem cells on the scaffold were observed under the scanning electron microscope(SEM) and confocal microscopy in 1 day,3,7 days after seeding for the evaluation of biocompatibility between cells and PLGA.Results Primarily cultured cells reached 80%-90% confluence after 7-8 days with the fibroblast-like appearance.Adipose-derived stem cells of rabbits differentiated into osteoblast,adipocyte and chondroblast successfully,showing the positive stain for alizarin red staining,oil red O staining and immunoinfluorescene technique respectively.Proliferation of cells on PLGA scaffold went into plateau phase at 7 days after culture.SEM and confocal microscopy revealed the well-attached,spread cells along the scaffold and abundant excellular matrix both on the surface and interior pore of scaffold.Conclusion Cultured rabbit adipose cells have the ability of potential multilineage differentiation and good biocompatibility with PLGA scaffold,which could be used to construction of tissue engineered corneal stroma.

In order to show the social situation and public opinions for the decision-makers of medical reform, the viewpoints of main media, NPC and PCC members, and Internet users were analyzed according to the real-time monitoring data of public opinions on health-related topics ( new rural cooperative medical system, basic public health service, and rural medical workers) during the NPC and PCC, which showed the public awareness of health reform in grass-roots units of China.

Literature of TCM contains abundant information of Chinese medicine. Traditional Chinese medicine information is characterized by its high degree of knowledge-intensive and complex inter-knowledge, so it is difficult to integrate and share knowledge. TheShanghanlun is one of the Chinese medical classics, and it includes the rules and methods of syndrome differentiation and treatment and it showed good effects in the clinical application. However, it is difficult to master for beginners. As a kind of knowledge organization tool, topic maps can flexibly define the relationship between knowledge, which realizes the visualization of knowledge network, and integrates and shares the distributed knowledge. This paper focused on the current situation of topic maps researches. The topic maps was used to organize the original content ofShanghanlun, construct the concept model of it and explore the specific application of topic maps technology in the field of traditional Chinese medicine.

Objective To study the method of obtaining a large number of dendritic cells (DC). To study the specific cytotoxicity T lymphocyte (CTL) effect against tumor cells initiated by DC pulsed with peptide of cancer cell. Methods Development of cells with cytologic features of DC in bone marrow cultures supplemented with granulocyte macrophage-colony stimulus factor (GM-CSF) and IL-4. Determining the DC phenotype and the specific structure by electronic microscopy. The CTL effect against pancreatic carcinoma leading by the DC pulsed with tumor cells lysate in vitro was observed. Results A large number of typical DC was proliferated by supplementing with GM-CSF and IL-4 cytokines. DC had specific cell appearance and structure, and highly expressed various cell surface molecules. TNF-? had the ability of stimulating DC mature, the mature DC had the enhancing abilities of antigen presenting and IL-12 self-secreting, as well as, expressed higher levels of CD54, MHC-Ⅱ and CD86 molecules than control group (P

BACKGROUND: The application of adipose derived stromal cells to tissue engineering has been more and more popular around the world. Compatibility of scaffold material is the key point for its further research.OBJECTIVE: To determine the growth rules of rabbit adipose-derived stromal cells with polylactic-co-glycolic acid (PLGA).DESIGN, TIME AND SETTING: An in vitro study was performed at the Institute of Ophthalmology, Otolaryngology Hospital,Fudan University and Shanghai Tissue Engineering Center from September 2007 to March 2009.MATERIALS: Six female New Zealand rabbits aged six months were used for extraction of adipose-derived stromal cells. PLGA was provided by Sigma, USA.METHODS: Adipose tissue was harvested from the nape fat pad of the rabbits following anesthesia. Primary cultured cells were established using type I collagenase and cell cultures were maintained with DMEM containing 10% volume fraction of fetal bovine serum. Cells were passaged when 80% was confluent. The fourth passages of cells were utilized for the study. PLGA consisted of polylactic acid and polyglycolic acid as the ratio of 7:3, and the relative molecular mass was 104900.MAIN OUTCOME MEASURES: Initially, the adherent rate of cells to scaffold was detected. After one week co-culture, the scaffold bearing adipose-derived stromal cells labeled with Dio agent were investigated by fluorescence inverse microscope,scanning electron microscopy and laser scanning microscope.RESULTS: The best adherent rate of adipose-derived stromal cells with PLGA reached 99%. After one-week-incubation in vitro,cells of fiber-shaped or ovule-shaped proliferated well and exhibited stratified growth on the surface of PLGA scaffold. In addition,it also secreted visible extracellular matrices, which could be examined by scanning electron microscopic examination.Meanwhile, the adipose-derived stromal cells grew well and distributed equably inside the PLGA in terms of the investigation with laser scanning microscope.CONCLUSION: The compatibility of adipose-derived stromal cells to PLGA in vitro was well.

Hexanes ; adverse effects ; Humans ; Occupational Injuries ; chemically induced ; Pyrroles ; adverse effects ; Trauma, Nervous System ; chemically induced