Objective To compare the clinical effects of four kinds of gingival retraction technique in treat-ment of anterior teeth restoration.Methods 169 patients for 352 teeth with tooth body and tooth dentition defect by anterior crown bridge repair were chosen and divided into 4 group by patients'order,including A group(88cases)with single track method,B group(91cases)with single line for two times method,C group(89cases)with double line method and D group(94cases)with double line for two times method.And the fixed restoration satisfaction rate of anterior teeth of both groups was compared.Results The satisfaction rates of gums,shoulder,impression,model and restoration of A group were 73.9%,70.1%,69.3%,65.9%,61.4% respectively,which of B group were 83.5%, 80.2%,80.2%,80.2%,76.9%;which of C group were 84.3%,80.9%,78.7%,77.5%,76.4%;which of D group were 94.6%,93.6%,92.6%,92.6%,90.4%.There were no significant differences in the fixed restoration satisfaction rate of anterior teeth between B group and C group(χ2 =2.43,1.17,2.85,3.04,2.30,all P >0.05). The fixed restoration satisfaction rate of anterior teeth of D group were significantly better than A,B and C groups (χ2 =14.90,16.39,15.83,19.87,21.38,all P <0.05 ).Conclusion Double line for two times method in the treatment of anterior teeth restoration can efficiently avoid ree gingival damage in the situation with abutment shoulder preparation,improve the quality of preparation,impression and model,and are helpful to higher the fitness of the neck of anterior teeth fixed restorations.

Child ; Continuous Positive Airway Pressure ; Humans ; Pediatrics

Objective To investigate the regulation of parathyroid hormone(1-34) on mRNA expression of osteoclast inhibitory lectin (OCIL) gene in UMR106 osteoblastic-like cells and involved signaling pathway.Methods Rat UMR106 osteoblastic-like cells were cultured and treated with various concentration of PTH(1-34) and specific agonists or inhibitors of PKA,PKC,Ca2+/calmodulin-dependent protein kinase (CaMK) and mitogen-activated protein kinase (MAPK) signal pathways for indicated time intervals.Then the cells were gathered at indicated time points and total RNA were extracted.OCIL mRNA expression was analyzed using real-time PCR technique.Results PTH(1-34) stimulated OCIL mRNA expression in a time-and dose-dependentmanner.A dose of 10 nmol/L PTH(1-34) started to induce OCIL mRNA from 6 h,with a highest increase of about 2.8-fold vs.control group (without PTH treatment) at 24 h.The up-regulation of OCIL mRNA began and reached maximum later than RANKL induction and OPG suppression effected by PTH(1-34).Protein Kinase A (PKA) signaling activators forskolin(FSK) and dibutyryl cAMP (db-cAMP),as well as calcium ionophore A23187 all up-regulated OCIL mRNA with the maximal induction of about 4.2-fold,4.5-fold and 5.1-fold.Protein Kinase C (PKC) activator phorbol-12-myristate-13-acetate(PMA) reduced OCIL mRNA expression at the early stage(2-6 h),with the highest down-regulation of 50％ at 6 h.However,the inhibitory effect on OCIL mRNA turned into slightly stimulatory effect later (24 h).PKA inhibitor KT5720,calmodulin antagonist W-7,CaMK Ⅱ inhibitor KN-62 and mitogen-activated protein kinase (MAPK) inhibitor PD98059 all blocked PTH(1-34)-induced OCIL mRNA expression by the maximal reduction of 56％,61％,63％ and 50％ respectively.There also exist cross-talks between different signal pathways.MAPK inhibitor PD98059 blocked the expression of OCIL mRNA which was stimulated by PKA activators FSK or db-cAMP,with the reduction of 98％ and 63％ respectively,while the OCIL mRNA expression stimulated by A23187 remained unaffected.Conclusion PTH(1-34) increased OCIL mRNA expression in vitro through cAMP/PKA,Ca2+/CaMK and MAPK signaling pathways.

BACKGROUND:Hair fol icle stem cel s derived from skin and hair have the most readily available sources, and cannot lead to serious complications and immunogenicity after col ection, which can be used for autologous transplantation. OBJECTIVE:To provide effective experiment basis for hair fol icle stem cel s in the repair of skin wound through reviewing the role of hair fol icle stem cel s in promote the repair of skin wound. METHODS:Articles related to hair fol icle stem cel s for the repair of skin wound were retrieved in CNKI and PubMed databases (1999-01/2014-12). The key words were“hair fol icle stem cel , skin repairing, regenerative medicine, tissue engineering”in Chinese and English, respectively. A total of 45 articles based on inclusion criteria and exclusion criteria were obtained for the review. RESULTS AND CONCLUSION:Hair fol icle stem cel s belong to adult stem cel s, which are easy to access, have a significant number, and possess differentiation potential and safety. Hair fol icle stem cel s can promote the repair of skin wound and provides good seed cel s for regenerative medicine and tissue engineering research through early vascularization of the skin, epidermal and appendage regeneration, signaling pathways, and transcription factors.

Objective To investigate the effects of airway pressure release ventilation (APRV) in children with severe pneumonia-related acute respiratory distress syndrome(ARDS).Methods Ten children suffering severe pneumonia-related ARDS with APRV were included in Pediatric Intensive Care Unit, Beijing Children's Hospital,Capital Medical University from March 2011 to October 2014.Ventilation variables, changes of airway pressure and Ramsay scores were collected and compared with that in conventional ventilation (CV).Clinical variables were measured at CV before APRV and at 1,4,12,24 hours after transition to APRV.Results High airway pressure(Phigh) at each time point during APRV was significantly lower than peak airway pressure (Ppeak) or plateau airway pressure (Pplat) in CV[(26.00 ±2.94) cmH2O(1 cmH2O =0.098 kPa) ,(24.40 ±3.34) cmH2O,(23.30 ±3.46) cmH2O,(23.00 ± 3.80) cmH2O vs (31.80 ± 5.59) cmH2O, P ＜ 0.01].Mean airway pressure (Pmean) at each time point during APRV was significantly higher than that in CV [(23.00 ± 2.86) cmH2 O, (21.69 ± 3.12) cmH2 O, (20.89 ± 3.31) cmH2 O, (20.46 ± 3.48) cmH2 O vs (17.50 ± 2.37) cmH2 O, P ＜ 0.05].Fraction of inspired oxygen (FiO2) were significantly decreased at 4, 12 and 24 hours after APRV than that in CV [(73.00 ± 22.39) ％, (63.50 ± 20.16) ％, (63.00 ± 21.11) ％ vs (88.00 ± 15.49) ％, P ＜ 0.05].Ramsay scores were significantly decreased at each time point during after APRV than that in CV [(3.90 ± 0.74) scores, (2.90 ± 0.88) scores, (3.00 ± 1.15) scores,(3.50 ± 0.71) scores vs (4.60 ± 0.52) scores, P ＜ 0.05].Conclusions Compared with CV, APRV had a lower Phigh and FiO2 ,a higher Pmean and more shallow sedation.APRV may be an effective ventilation mode in children's severe pneumonia-related ARDS.

0.05), and both groups got ideal clinical effect. Conclusions MGHSV is an ideal operation for various types of duodenal ulcer, which with a preferable long-term effect. It is worth to be widely applied in clinical practice.

Objective To analyze the MRI imaging feature and the clinical feature of pituicytoma. Methods The clinical data and imaging feature of 10 patients with pituicytoma who were proved histologically were retrospectively studied. Visual disturbances disorder and headache were the main complaints of all patients. One patient had sexual function decline. All patients were given the examination of MRI and showed saddle area were occupied. Results Most of pituicytoma was circular or oval morphologically. Pituicytoma located at suprasellar region in 4 patients, in the sellar in 2 patients and over the sellar region in 4 patients.In them, cystic change occured in 1 patient. In most of the cases, the tumor showed isointensity on T1WI, isointensity or slightly hyperintensity on T2WI. After injection of contrast medium, the tumor showed homogeneous enhancement in early stage. Pathological markers:S-100, and vimenlin indicated 100%positive;glial fibrillary acidic protein(GFAP), synaptophysin (SYN) and epithelial membrane antigen(EMA) indicated 50% positive. Six patients′serum endocrine function test:the levels of serum total triiodothyronine (TT3), total thyroxine (TT4), free triiodothyronine (FT3), free thyroxine (FT4), thyroid stimulating hormone (FSH), luteinizing hormone (LH) had different degrees of reduction in 4 patients, and these index were normal in 2 patients. Conclusions On MRI, pituicytoma has certain characteristics which might help clinical diagnosis combined with the clinical manifestation and endocrine function tests.

Objective To develop an HPLC method for simultaneous content determination of ginsenoside Rg1, Re and Rb1 in Panacis Japonici Rhizoma.Methods Chromatographic separation was carried out by using an Agilent Poroshell 120 C18 column (4.6 mm × 100 mm, 2.7μm). The mobile phase consisted of acetonitrile-0.1% phosphoric acid with gradient elution at a flowrate of 1.0 mL/min, and the injection volume was 10μL. The detection wavelength and column temperature were 203 nm and 30℃ respectively.Results Ginsenoside Rg1, Re and Rb1 had the baseline separation and were in good linear range. The recovery rates were 99.5%, 103.0% and 100.5% respectively.Conclusion The approach is simple, accurate, with good repeatability and short analysis period, which can determine the contents of ginsenoside Rg1, Re and Rb1 correctly and provide references for quality control of Panacis Japonici Rhizoma.

Objective To study the expression of Mage A1、A2、A3 in breast cancer tissues and four breast cancer cell lines Methods The expression of Mage A1、A2、A3 in breast cancer tissues and four breast cancer cell lines, MCF 7、Sk Br 3、MDA MB 435s and TM40D was detected by reverse transcription polymerase chain reaction (RT PCR) Results The positive expression rate of Mage A in breast cancer tissues was 13/33 (39%), of Mage A1 was 4/33 (12%), of Mage A2 was 8/33 (24%), and of Mage A3 was 7/33 (21%), respectively Both Mage A1 and Mage A3 were positive in breast cancer cell line MCF 7 and Sk Br 3 MDA MB 435s expressed Mage A2 and Mage A3 Mage A3 was positive in TM40D Conclusion Mage genes were often expressed in breast cancer, but expression of Mages varies in the breast cancer cell lines Mage genes encoding proteins are eligible for Mage peptide based active immunotherapy

Objective To study the clinical features of invasive pneumococcus disease (IPD) with resistance to antimicrobial agents in children,and to improve the diagnosis and treatment of this disease.Methods The clinical data from 21 IPD patients younger than 13 years old were collected from January 2008 through December 2010 in Pediatric Intensive Care Unit in Beijing Children's Hospital for retrospective analysis. Specimens of blood,pleural effusion,cerebrospinal fluid and soft tissue aspirated were collected from these children,and 23 strains of streptococcus pneumonia (SP) were cultured,isolated and confirmed,and the antibiotics susceptibility to penicillin and other antibiotics of these strains were assayed.Results Among the 21 IPD children,the ratio of male to female was 0.9∶1,and the age was 5 months to 13 years,with 61.9％ of them under 2 years.Of them,12 patients (57.1％ ) had purulent pleurisy,and 1 (4.8％ )patient had an underlying disease diagnosed to be X - linked agammaglobulinemia (XLA).There was no seasonal difference in the occurrence rate of this disease. Eight (38.1％) patients were cured,11(52.4％ ) were improved,while 2 (9.5％ ) patients not improved without death.There was no statistically significant difference in the annual detection rate of invasive SP (x2 =3.711,P =0.156).The incidences of penicillin-intermediate susceptibility SP (PISP) and penicillin-resistant SP (PRSP) were 47.8％ and 26.1％ respectively.The rate of resistance to multiple antibiotics was 91.3％.Conclusions Children aged less than 5 years,especially younger than 2 years,are prone to IPD,and purulent pleurisy and septicemia are often seen in this disease. Some patients had the underlying diseases.The complications included hemophagocytic syndrome,acute respiratory distress syndrome,septic shock,bronchial pleural fistula and so on.The multidrug resistance rate was 91.3％.It is important to put great emphasis on the monitoring antibiotics resistance to invasive pneumococcal disease.