Objective: To investigate the effects of enamel matrix pr ot eins(EMPs) and purified EMPs(EMD) on the proliferation and protein synthesis act ivity of rat ectomesenchymal stem cells in vitro. Methods: C ell culture technique and 3H-leucine label assay were used to measure the pr oliferation and protein synthesis activity of rat ectomesenchymal stem cells exp osed to the EMPs- or EMD-conditioned culture media with different concentratio n. Results: Both EMPs and EMD at 50～200 mg/ml increased the pro l iferation and protein synthesis of the cells in 10-day-culture. EMPs and EMD a t 150 mg/ml showed the strongest effects(P

Objective To study the effectiveness of postoperative radiotherapy and prognostic factors of soft tissue sarcoma. Methods Sixty-four soft tissue sarcoma patients admitted from June 1987 to May 1997 were treated by complete,partial or extended resection and postoperative external beam radiotherapy. Fourty-eight patients received 1.8～2.0?Gy/fraction,5 f/w, to a dose of 40～72?Gy (median 60?Gy). Sixteen patients received 1.2～1.5?Gy/f, bid, 6 hr interval to a dose of 64.8～85.0?Gy (median 66.5?Gy). The 5-year survival and locoregional control rates were estimated by Kaplan-Meier method. Logrank test and Cox regression were used to study the significance of predictive factors. Results The overall 5-year survival and locoregional control rates were 60.2%, 57.9% respectively. Those of the conventional group and hyperfractionated group were 54.3% and 61.9% vs 64.3% and 42.9% ,respectively. Cox regression analysis showed that histologic grade, size and site of the primary tumor, fractionation of radiotherapy were independent prognostic factors for survival. Conclusions Complete or extended resection followed by radiotherapy are satisfactory for soft tissue sarcoma. Histologic grade , size, site of the primary tumor and method of fractionation were prognostic factors.

Objective To establish chronic obstructive pulmonary disease(COPD)rat models,and to study the intervention of the formula of nourishing Qi,activating blood circulation and dispersing phlegm recipe on the morphology.Method To establish rat COPD models by intratracheal instillation of lipopolysaccharide and exposure to cigarette smoke.To instill intervention drug daily either the formula of nourishing Qi,activating blood circulation and dispersing phlegm recipe or the roxithromythin,starting on the 20th,30th and 40th day of the experiment respectively(the groups was named h 20,h 30,h 40,r 20, r 30 and r 40 for short),and to observe the effect on the morphology by means of collagen staining and image analyzer.Results The pathological changes and lung function in the model group were accorded with the human COPD.In drug intervention groups,airway inflammation and epithelial proliferation were alleviated to different degree compared to the model group.In model group,the collagen deposition was increased predominant type I collagen compared to the health comtrol group,and the deposition in the drug intervention groups were decreased compared to the model group,according to the Sirius redpolarizing microscopy morphometry method.The thickness of the airway wall in the model group was significantly increased compared to the health control group(P

ObjectiveTo observe the effect of occupational therapy (OT) on activities of daily living (ADL) of the children with cerebral palsy (CP).MethodsSixty-two CP children were treated with OT. The ADL scores of all children were assessed within one week after admission and training goal and plan were made according to evaluated result. The therapeutic effect was assessed before discharge.ResultsAfter OT treatment, the ADL scores of the children increased significantly ( P<0.01) and disable grades decreased (χ2=10.48, P< 0.01). The total effect rate was 87.1%.ConclusionOT training can improve ADL of the children with CP significantly.

Objective To investigate the transactivating effect of hepatitis C virus(HCV)core protein on inducible nitric oxide synthase(iNOS)gene promoter and the molecular biological mecha- nisms of HCV pathogenesis.Methods Polymerase chain reaction(PCR)technique was employed to amplify the sequence of iNOS promoter by using HepG2 genomic DNA as template,and the product was cloned into pGEM-T vector.The iNOSp gene was cut from T-iNOSp by KpnⅠand XhoⅠ,and then was cloned into pCAT3-Basic,the constructed vector was named as pCAT3-iNOSp,pCAT3-iN- OSp was transfected into the LO_2 cell line.LO_2 cell was also cotransfected with pcDNA3.1(-)-core and pCAT3-iNOSp by FuGENE 6 transfection reagents.The LO_2 cells transfected with pCAT3-Basic was used as negative control.The activity of CAT in LO_2 cells was detected by an ELISA kit after 48 hours,which reflected the transactivating function of HCV core protein to iNOS gene promoter.Re- sults The expressive vector pcDNA3.1(-)-core and report vector pCAT3-iNOSp had been construc- ted and confirmed by restriction enzyme digestion and sequencing.The expression of CAT in LO_2 cells transfected with pCAT3-iNOSp and peDNA3,1(-)-core was 11 times as higher as that of pCAT3-bas- ic,and 6 times as higher as that of pCAT3-iNOSp.Conclusion It is suggested that HCV core protein can transactivate iNOS gene promoter.

Adult ; Cerebrospinal Fluid Rhinorrhea ; Female ; Humans ; Sphenoid Sinus ; pathology

Objective:To investigate the effect and safety of tacrolimus combined with Okra capsule in treatment of the refractory membranous nephropathy.Methods:Selected 60 patients with refiactory membranous nephropathy who were treated in our hospital from March 2014 to October 2015,and they were divided into observation group and control group with 30 cases in each group according to the random number table method.The control group was treated with prednisone,and the observation group was treated with tacrolimus combined with Okra capsule on the basis of the control group,the courses of treatment were 6 months in two groups.The clinical effects were observed in two groups,the levels of urine protein (uPRO),serum Albumin (sALB),serum Creatinine (sCr),serum Alanine aminotransferase (sALT),tumor necrosis factor-α (TNF-α) and transforming growth factor-β 1 (TGF-β1) were detected and compared in two groups before and after treatment,and the adverse reactions were recorded in two groups.Results:The total effective rate of the ob-servation group was significantly higher than control group (P＜0.05).Compared with before treatment,the levels ofuPRO,TNF-α,TGF-β1 in two groups were decreased after treatment,while sALB,sCr were increased (P＜0.05),and uPRO,TNF-o,TGF-β1 in the observation group were lower than the control group (P＜0.05).There was no significant difference in the incidence of adverse reactions between the two groups (P＞0.05).Conclusion:Tacrolimus combined with Huangkui capsule in the treatment ofrefractory membranous nephropathy has good curative effect,reduce renal damage,and low adverse reaction,worthy of promotion.

Objective To investigate the effects of pentoxifylline on the cell proliferation of, collagen synthesis and TGF-β1 expression by human fibroblasts derived from keloid. Methods Skin samples were obtained from the lesions of 3 patients with keloid and normal skin of 3 human controls followed by primary culture of fibroblasts. Fibroblasts of 5th to 8th generation were cultured with pentoxifylline of 0.1 to 3 g/L for various durations. Then, MTT assay was performed to detect the cell proliferation of fibroblasts, double antibody sandwich-enzyme linked immunosorbent assay (ELISA) to measure the expression of TGF-β1, and reversetranscription PCR to examine the mRNA expressions of procollagen Ⅰ and Ⅲ in these fibroblasts. Results The pentoxifylline of 0.1 to 2 g/L markedly inhibited the proliferation of fibroblasts derived from keloid lesions and normal skin, in a dose- and time-dependent manner, with the strongest effect observed in fibroblasts treated with pentoxifylline of 2 g/L. A significant reduction was induced in the TGF-β1 mRNA expression in keloidand normal skin-derived fibroblasts by pentoxifylline of 0.5 to 2 g/L (all P < 0.01), and in the mRNA expression of procollagen Ⅰ and Ⅲ by pentoxifylline of 1 and 2 g/L (P < 0.05 or 0.01). Concretely, the relative mRNA expression level of procollagen Ⅰ and Ⅲwas 0.873 ± 0.077, 0.571 ± 0.050 respectively in keloid fibroblasts respectively, and 0.473 ± 0.035, 0.370 ± 0.045 in the control fibroblasts, after treated with pentoxifylline of 1 g/L, 0.750 ± 0.036 and 0.433 ± 0.045 respectively in keloid-derived fibroblasts, 0.390 ± 0.030 and 0.250 ±0.123 respectively in the control fibroblasts, after treated with pentoxifylline of 2 g/L, significantly lower than that in the keloid-derived (1.216 ± 0.061 and 0.953 ± 0.060) and control (0.836 ± 0.080 and 0.776 ± 0.041) fibroblasts without treatment. Conclusion Pentoxifylline shows an evident suppressive effect on the cell proliferation of, as well as the expression of TGF-β1 and procollagen Ⅰ and Ⅲ in fibroblasts derived from keloid lesions and normal skin.

Objective To investigate the incidence and trend of colorectal cancer in Wenling City of zhejiang Province from 2006 to 2011.Methods The date of colorectal cancer cases were collected from the tumor registersystem.The incidence rates,time trend and regional distributionof colorectal cancer were analyzed.Results The overall incidence of colorectal cancer in Wenling City was rising.The annual average incidence was 22.67/105.The incidence of colorectal cancer both in man and woman were increased with age,especially in ages between 55 and 75.The incidence of colorectal cancer was highest in city,followed in fringe area and lowest in rural.But the average annual growth rate was highest in rural.Conclusion The incidence trend of colorectal cancer is rising in Wenling City.Control measures of colorectal cancer according to the risk factors should be given,especially in rural area.

BACKGROUND:The biological function of human periodontal ligament stem cells is a hot area of research in the treatment of periodontal disease. Human periodontal ligament cells are one of the end cells derived from human periodontal ligament stem cells;meanwhile, it can also provide supports to the development of human periodontal ligament stem cells. However, few studies are reported about the difference of biological characteristics between human periodontal ligament stem cells and human periodontal ligament cells. OBJECTIVE:To compare the differences of biological characteristics between human periodontal ligament stem cells and human periodontal ligament cells. METHODS:The human periodontal ligament stem cells and human periodontal ligament cells were isolated and purified using tissue explant method and cellclone method, respectively, and then were observed under light microscope to compare the differences of morphology. cellproliferation curves of human periodontal ligament stem cells and human periodontal ligament cells were drawn respectively with cellcounting kit 8 assay. Flow cytometry analysis was used to detect their cellcircles and their surface markers expressions. The alkaline phosphatase gene, proliferating cellnuclear antigen gene and Scleraxis gene of human periodontal ligament stem cells and human periodontal ligament cells were detected by Real-time PCR assay.RESULTS AND CONCLUSION:The human periodontal ligament stem cells and human periodontal ligament cells showed a notable difference in morphology under the light microscope observation. During the first 5 days, the cellproliferation curve of human periodontal ligament stem cells was lower than that of human periodontal ligament cells, but 5 days later, the curve of human periodontal ligament stem cells was significantly higher than that of human periodontal ligament cells. The cellcircles of human periodontal ligament stem cells and human periodontal ligament cells were 41.1%and 23.9%, respectively. The surface markers of human periodontal ligament stem cells and human periodontal ligament cells were similar, but their expression rates had significant difference. The expressions of alkaline phosphatase gene, proliferating cellnuclear antigen gene and Scleraxis gene of human periodontal ligament stem cells were significantly higher than those of human periodontal ligament cells. The above results suggest that human periodontal ligament stem cells have much stronger potential ability than human periodontal ligament cells in osteogensis and cellproliferation.