Objective To explore the mechanism of blood-stage treatment in patients with psoriasis vulgaris through studying the level change of IFN-?, IL-4, IL-10 and IL-17 in patients with blood-stage treatment during activity and quiescence period separately. Methods 20 patients with psoriasis vulgaris in active stage(blood heat syndrome)and 20 patients with psoriasis vulgaris in resting stage(blood stasis syndrome) were recruitedto observe the treatment effects by the PASI score,and to observe thechange of IFN-?, IL-4, IL-10, IL-17 before and after treatment in the serum by ELISA. Results The PASI scores of two groups were both significantly decreased after treatment (blood heat syndrome group t=6.685, P<0.01;blood stasis syndrome group t=4.959, P<0.01). The levels of cytokines were significantly different between patients in the periods of activity and quiescence. Onvarying degrees, the levels of cytokines of two groups were improved after treatment. The levels of cytokines IFN-?, IL-17 in blood heat group significantly decreased(t=3.024, P<0.01;t=2.543, P<0.05). The levels of cytokines IL-17 drop but the levels of cytokines IL-4 raised in blood stasis group,that were significantly differentwith the levels before treatment(t=2.417, P<0.05; t=2.547, P<0.05). Conclusion The levels of INF-?, IL-4, IL-10 and IL-17 could be effectively modulated with blood-stage treatment in treating psoriasis vulgaris.

Objective To investigate postoperative infection rates of patients with different types of incisions and different risk indexes of operation in a tertiary hospital in Chengdu City through carrying out targeted monitoring of surgical incision,in order to determine important interventions for infection control.Methods The data about operating rooms in the hospital monitored in this study was collected via the Donghua software electronic information system,and the situation of postoperative infection of incision wounds was analysed as well.Results Among the 1 331 cases of patients,the total infection rate of postoperative incisions was 0.60％.The type Ⅰ,type Ⅱ and type Ⅲl/Ⅳ incision infection rate was 0.31％,0.69％ and 1.78％,respectively.The infection rate of patients whose surgical risk score was 0,1 point and ≥2 points was 0.13％,0.84％ and 1.74 ％,respectively.By Fisher exact test,there were statistically significant differences in postoperative infection rates among patients with different types of surgical incision and those with different surgical risk index scores(P＜0.05).Conclusion The postoperative infection rates of patients with type Ⅲ/Ⅳ incision and those with surgical risk index score≥2 points are the highest.It is necessary to emphasize and strengthen the intervention on controlling postoperative infections,effectively reduce the postoperative infection rate through active monitoring,in order to improve the quality of medical hospital treatment and ensure patients'safety.

Field avian infectious bronchitis virus (IBV) designated as JS/9 5/03, which was isolated from Jiangsu province of china, was cultivated in chicken emb ryo. It's single strain RNA was extracted from purified virus and worked as temp late of reverse transcription polymerase chain reaction (RT-PCR), a pair of pri mer designed according to megalign results of published IBV sequences in Genbank was used to amplify the neucleocapsid gene, the RT-PCR product was sequenced d irectly. Sequence analysis revealed that the sequence of JS/95/03 is most homolo gized with that of M41 strain.

Objective To construct a voxel mouse model combining with Monte Carlo method used for radiation dose calculation.Methods A set of slice images obtained from a nude male mouse (28 g) was utilized, all slice images were registered,some organs or tissues were identified, segmented and filled with specific color, and finally the physical property was defined by MCNP application.Results A mouse model with a voxel size of 0.2 mm×0.2 mm×0.2 mm, consisting of 14 organs or tissues,was constructed, which could satisfy the requirement of precision for radiation dose distribution calculation and moderate computing time.Conclusion The voxel mouse model can be used to calculate the quantity of ionization radiation dosimetry in related areas including radiological medicine, nuclear medicine and space radiation medicine.

BACKGROUND:Umbilical cord as childbirth waste has wide variety of sources and can be easily obtained, without any ethical and legal restrictions. Therefore, human umbilical cord mesenchymal stem cells break al the restrictions originated from other sources of mesenchymal stem cells. OBJECTIVE:To review the application of human umbilical cord mesenchymal stem cells in cartilage diseases, neuroglioma, ischemic brain injury, lung disease, liver disease and models of myocardial infarction. METHODS:The PubMed and Wanfang databases were searched by the first author using the keywords of“human umbilical cord mesenchymal stem cells, disease models, celltherapy”in English and Chinese, respectively. Seventy-three articles were searched and final y, 35 articles were included in result analysis. RESULTS AND CONCLUSION:Human umbilical cord mesenchymal stem cells have multilineage differentiation capacity similar to bone marrow mesenchymal stem cells. Compared with bone marrow mesenchymal stem cells, human umbilical cord mesenchymal stem cells have lower immunogenicity. Human umbilical cord mesenchymal stem cells show certain curative effects on cartilage disease, neuroglioma, ischemic brain injury, lung disease, liver disease and myocardial infarction, indicating that human umbilical cord mesenchymal stem cells can be used for celltransplantation to treat various diseases.

BACKGROUND:Tree shrew is a representative between insectivore and primates, has a high degree of evolution, is more inexpensive primates, has high use of medical biology, and has been attached by scholars. OBJECTIVE:To detect whether the commonly used secondary antibodies have immune response with tree shrew serum. METHODS:Western blot assay and enzyme linked immunosorbent assay were utilized to detect whether the tree shrew serum had cross-reacts with anti-rabbit, anti-goat, anti-human, anti-mouse, anti-rat, and anti-monkey secondary antibodies. RESULTS AND CONCLUSION:Western blot assay results indicated that tree shrew serums did not react with anti-rabbit, anti-goat, anti-human, anti-mouse, and anti-rat secondary antibodies and had cross reaction with anti-monkey secondary antibody. Enzyme linked immunosorbent assay results also indicated that tree shrew serums were cross-reactive with anti-monkey secondary antibody, but did not have cross-reactivity with the other secondary antibodies. Above data confirmed that the usual y soled secondary antibody cannot be used to immunoassay with tree shrews IgG. Only anti-monkey secondary antibody has cross-react with tree shrew serum. It is necessary to prepare anti-tree shrew IgG monoclonal and polyclonal antibodies. When no antibody is readily available at present, anti-monkey secondary antibody can be used to substitute detection, and can be widely applied in the study of tree shrew models of disease.

Objective To investigate the effect of shenfu injection on immune function in severe trauma patients.Methods 60 severe trauma patients were divided into the control group (n =30)and shefu group (n =30) by random number table.Other 30 cases were chosen as the health control group at the same phase.All patients were received conventional treatments,however,patients of the shenfu group were additionally received the shenfu injection treatment in the early stage.The CD +3 ,CD +4 ,CD +8 cell,human leukocyte antigen (HLA -DR),interleukin -1(IL -1),interleukin -6(IL -6)were detected on 3rd and 7th day by double -antibody sandwich enzyme -linked immu-nosorbent assay (ELISA).Results Compared to the health control group,the IL -1,IL -6 in the control and shenfu group were significantly higher than the health control group(f=7.128,q =9.212,10.112,all P <0.05).The IL -1and IL -6 in the control and shenfu group were significantly increased on 3rd day (t =11.126,10.013,all P <0.05)and decreased on 7th day(t =17.121,14.213,all P <0.05).The IL -1 and IL -6 in shenfu group were sig-nificantly lower than that of the control group(χ2 =4.113,10.117,all P <0.05).The CD +3 ,CD +4 ,CD +8 ,HLA -DR and CD +3 /CD +8 rate in the control and shenfu group were significantly lower than the health control group(f=11.071, q =10.229,12.032,all P <0.05).On 3rd day,the CD +3 ,CD +4 ,CD +8 ,HLA -DR and CD +3 /CD +8 rate in shenfu group were significantly increased(t =10.013,P <0.05).On 7th day,CD +3 ,CD +4 ,CD +8 ,HLA -DR and CD +3 /CD +8 rate in the control and shenfu group were both increased(t =11.126,15.932,all P <0.05).And the CD +3 ,CD +4 ,CD +8 ,HLA -DR and CD +3 /CD +8 rate in shenfu group were significantly higher than the control group(χ2 =3.771,P <0.05).Conclusion Shenfu injection can regulate immune function in severe trauma and improve clinical treatment.

ObjectiveTo investigate the current status of Kaschin-Beck disease in Shandong province, and to provide a scientific basis for decision-making in controlling the disease. Methods According to the National Monitoring Program of Kaschin-Beck disease requirements, historical serious villages of Kaschin-Beck disease in Qingzhou of Shandong province were selected annually; children aged 7 to 16 were chosen to receive clinical examination and children aged 7 to 12 were taken X-ray examination. Clinical and X-ray diagnosis was carried out according to the Diagnostic Criteria of Kashin Beck Disease(GB 16003-1995). Results From 1996 to 2010, in 53 diseased villages, three thousand three hundred and eighteen school children aged 7 to 16 were clinically diagnosed, and child Kaschin-Beck disease of degree Ⅰ and above were not detected; three thousand and ninety-one school children aged 7 to 12 were examined by X-ray, forty cases were found positive, and the total positive rate was 1.29％(40/3091 ). The year with the highest positive rate was 2002, and the rate was 3.49％(13/372) ; the positive rate was 0 in 1996 and 2008. The difference of the X-ray positive rate between each year was statistically significant(x2 =31.54, P ＜ 0.01 ). ConclusionsChild Kashin-Beck disease in Qingzhou is basically under control.Since etiology of Kashin-Beck disease is still unclear, surveillance of the disease still needs to be strengthened.

BACKGROUND:Reprogramming somatic cells to generate pluripotent stem cells has a wide application in biomedical research. OBJECTIVE:To analyze the effect of different molecular weight proteins in chicken egg-white extract to elevate expression of pluripotent genes Oct-3/4 and Nanog in 293T cells. METHODS:The extracts of chicken egg-white were separated into more than 3 ku and less than 3 ku ingredients to be used for co-culture with 293T cells. There were four groups, 1×105 293T cells per wel , total 500μL. In the control group, 500μL culture medium was added;in the other three groups, 500μL chicken egg-white extract, more than 3 ku and less than 3 ku ingredients were respectively added. Quantitative PCR was used to determine the relative expression levels of pluripotent genes Nanog and Oct-3/4 in 293T cells. RESULTS AND CONCLUSION:By using co-culture method, more than 3 ku ingredients have a role to increase the expression of pluripotent genes Oct-3/4 and Nanog, but less than 3 ku ingredients cannot elevate the expression of pluripotent genes. This indicates that the ingredient of chicken egg-white extract to elevate the expression of pluripotent genes is more than 3 ku proteins.

Objective To evaluate the effect of hyperbaric oxygen (HBO) treatment on the expression of nestin in a model of right middle cerebral artery occlusion (MCAO) in rabbits. Methods Seventy healthy rabbits were dividod into 3 groups: the rabbits in MCAO+HBO group(n=30) were treated with HBO immediately after MCAO, once a day, consecutively for 20 d; the rabbits in MCAO group (n=30) were not trcated with any therapy after MCAO; the control group (n=10) received the same operation as that of MCAO group except MCAO. Rabbit behaviors and volumes of infarction were observed, and the expression of nestin was measured by immunocytochernistry 10 and 20 d after MCAO. Results Behaviors' scores and volumes of infarction were better in MCAO+HBO group than the MCAO group (P<0.05). 10 d after MCAO, the number of nestin-immunoreactive cells of MCAO+HBO group and MCAO group was respectively 15.88±1.2 and 6.63±1.6; 20 d after MCAO, the number in MCAO+HBO group and MCAO group was respectively 20.03±1.6 and 6.82±0.8. The number of nestin-immunoreactive cells in MCAO+HBO group was significantly higher compared with that of MCAO group (P<0.05). Conclusion Early applications of HBO and repeated administration of HBO for 20 d can evidently improve the behaviors and infarct size and elevate the expression of nestin in rabbit models of MCAO.