Objective To establish a respiratory distress syndrome (RDS) model of piglets and assess the therapeutic effect of pulmonary surfactant (PS) on gas exchange, lung mechanics and morphology. Methods Preterm newborn piglets were delivered by cesarean section at 94~97 days of gestation for determination of lung immaturity. Littermates were randomly divided into 4 groups: Group C50 were treated with 50 mg/kg for 6 h and group C100 with 100 mg/kg Curosurf; group C was the control group and group N received no ventilation. Blood-gas analyses and lung mechanic measurement were performed per hour. At the end of the experiment, the lungs were processed for biochemical, biophysical and histopathological analyses. Results Surfactant deficiency in RDS was shown with the low total phospholipids (TPL) level in bronchoalveolar lavage (BALF) in premature piglets at 94~97 days of gestation with marked difficulty in spontaneous respiration and morphological evidence of poor alveolar aeration and paucity of lamellar bodies in type Ⅱ alveolar epithelial cells. The group C had typical lung injury of RDS, the C100 and C50 group had variable but significantly improved alveolar phospholipid, alveolar aeration and wet-to-dry lung weight ratio. PaO_2/FiO_2 was improved from (92?37) mm Hg to (235?137) mm Hg, and the dynamic compliance (Cdyn) from (0.48?0.08) to (0.76?0.29) ml/(cm H_2O?kg) in group C100. But mild effects was shown in group C50. Conclusion A premature piglet RDS model is established and valuable for investigation of mechanism of lung injury in early life after born.

Objective To study the relationship between the cerebral artery stenosis and the carotid artery elasticity in the ischemia stroke patients by echo-tracking technique.Methods Ninety-two ischemia stroke patients were divided into both the mild cerebral arteries stenosis and moderate-severe cerebral arteries stenosis groups.CT angiography was performed to evaluate the stenosis of cerebral artery.The changes of the carotid diameter during cardiac cycles were obtained by echo-tracking technique and the quantitative parameters of pressure-strain elastic modulus (Ep),stiffness (β) and arterial compliance (AC) were calculated automatically. Results①There were significant differences (P＜0.05) between the ischemia stroke patient group and the normal adults group in β，Ep and AC.② There were significant differences (P＜0.05) between the mild cerebral arteries stenosis groups and the moderate-severe cerebral arteries stenosis groups in β and Ep.AC was lower in patients with the mild cerebral arteries stenosis groups than that in the moderate-severe cerebral arteries stenosis groups.Conclusions The carotid artery elasticity in ischemia stroke patients were significantly different from normal adults.In the ischemia stroke patients,the stiffer the carotid artery was,the higher the likelihood of moderate-severe cerebral stenosis was.

Objective:To evaluate the efficacy of femoral primary malignant bone tumors treated by limb salvage, with wide en bloc excision and reconstruction of the defect with recycled pasteurized autogratf.
Methods: From January 2008 to January 2011, 11 patients (7 males, 4 females), aged (11.0±2.5) years suffering from femoral primary malignant bone tumors were treated with en bloc excision and reconstruction of the defect with recycled pasteurized autograft. Ten patients were histopathologically diagnosed with high-grade osteosarcoma, and 1 with Ewing’s sarcoma.According to the Enneking staging system, all patients were in Stage IIb.
Results:All patients were followed-up for 24-65(42±20) months and all showed bony union at the last follow-up. hTe length of tumor bone resection was (17.5±3.2) cm, the operation time was (180±35) min, the intraoperative blood loss was (1200±250) mL, and drainage volume was (650±125) mL. Local skin necrosis occurred in 1 patient (9.1%), which was resolved by debridement. Nonunion occurred in 3 patients (27.3%), who were treated by secondary iliac crest cancellous bone gratfing.Pulmonary metastasis occurred in 1 patient (9.1%) who died 35 months post-operatively. According to the function assessment by the Enneking system, 5 patients had excellent results, 4 had good results, 1 fair and 1 poor results, with a satisfaction rate of 81.2%.
Conclusion:A pasteurized autograft can be an easily accessible and economical alternative for children’s malignant bone tumor of femurs.

Objective To study the value of time intensity curve of contrast enhanced ultrasound in the discrimination of benign and malignant soft tissue tumors. Methods Thirty-seven cases of soft tissue tumors were carried out contrast-enhanced ultrasound examination. The region of interest in the dynamic images were chosen to carry out Gamma-Variate curve fitting through Q-LAB software and made a quantitative analysis. Then they were compared with pathological diagnosis to analyze the ultrasound imaging performance of benign and malignant tumors and their characteristics of micro-irrigation. Results Thirty-seven cases of soft tissue tumors were pathologically diagnosed 21 cases of benign and malignant in 16 cases. The perfusion of benign tumors were mainly uniformity (19/21) or potentialization (2/21). The perfusion of malignant tumors were mainly uniformity (10/16) or nonuniformity (6/16). There were no significant differences in time to peak(TTP) and arrival time of contrast agent(AT) between benign and malignant tumors( P ＞0.05). The upslope rate(A) and the derived peak intensity(DPI) in benign group were significantly less than malignant group ( P ＜0.05). Conclusions Time-intensity curve analysis of contrast-enhanced ultrasound showed that benign and malignant soft tissue tumors were different in perfusion,and it will be of a certain value for the clinical differential diagnosis.

In order to improve the clinical efficacy of the umbilicus fumigation method, the ancient literature with the heat control of umbilicus fumigation method involved is collected extensively and analyzed systematically, and the heat control, precautions and contraindications of this method are discussed. In association with the cases and the present clinical experience, the main factors to the heat control are introduced, such as preparation of doughnuts, filling quantity, size of moxa cone and numbers of moxa cones so that the clinical application of the umbilicus fumigation method can be promoted and enhanced.
Biomedical Research ; China ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Fumigation ; History, Ancient ; Hot Temperature ; Humans ; Medicine in Literature ; Medicine, Chinese Traditional ; history ; methods ; Umbilicus ; physiopathology

Objective:To investigate the effects of pulsed neodymium yttrium aluminium garnet(Nd:YAG)laser in combination with scaling and root planing(SRP)in the treatment of moderate and server chronic periodontitis.Methods:30 patients with moderate or server chronic periodontitis were included in this split-mouth single blind randomized controlled clinical trial.The contralateral teeth with chronic periodontitis in the patients were randomly divided into 2 groups(n =55)and treated by SRP(group A)and SRP +Laser (group B)respectively.At base line,3 and 6 months after treatment.The clinical parameters including periodontal probing depth (PPD),vertical clinical attachment loss(CAL-V),bleeding index(BI)and CBCT data including alveolar bone density(ABD)and height(ABH)were measured.Results:3 months after treatment,the PPD and BI of group B was lower than those of group A(P <0.05).The gained CAL-V of group B was higher than that of group A(P <0.05).6 months after treatment,group B showed higher CAL-V and ABD at the mesial and distal directions than group A(P <0.05).Conclusion:SRP combined Nd:YAG laser is more ef-fective than SRP in the treatment of moderate and server chronic periodontitis.

Objective: To treat low-grade limb malignant tumors with hemicortical excision and reconstruction of the defect with recycled pasteurized autogratf. Methods:From January 2005 to January 2011, 10 patients [age (27.0±6.5) years] suffering from low-grade limb malignant tumors were treated with hemicortical excision and reconstruction of the defect with recycled pasteurized autogratf:7 were histopathologically diagnosed as parosteal osteosarcoma, and 3 as peripheral chondrosarcoma. According to the Enneking staging system, 8 were in Stage IA and 2 were in IB. Results:All the patients were followed-up for (50±23) months. All the patients had bony union at the last follow-up. The length of tumor bone resection was (9.5±2.7) cm, operation time was (150±45) min, intraoperative blood loss was (1000±350) mL, and drainage volume was (450±200) mL. hTe only fracture in the host bone during the operation was treated by internal ifxation. Local recurrence occurred in 1 patient was treated by a wide operative margin and reconstruction with a prosthesis. There was no distal metastasis. A ccording to the Enneking system, 9 patients had excellent results and 1 had good results. Conclusion:Hemicortical excision for low-grade limb malignant tumors is safe and effective.

Objective To construct the assessment index system for general nursing goals management based on the performance structure theory. Methods Expert interviews and Delphi expert enquiry were used to complete the construction of index system, and SPSS17.0 was used to do data statistics and reliability analysis. Results The assessment index system for general nursing goals management was constructed which contained 6 level-Ⅰindicators such as nursing quality, nursing safety, nursing service, teaching and training, the contribution of department and the communication skills and 22 level- Ⅱ indicators. The department monthly examination scores calculation method and feedback mechanism were also established. The expert positive coefficients were 97.6%and 98.8%respectively, the authority coefficients were 0.85 and 0.86, the importance and feasibility mean scores of every index were 3.86-4.98 and 3.98-4.88, and coefficients of variation were 0.03-0.27 and 0.05-0.25 in 2 rounds of enquiry. The importance of level-Ⅰor level-Ⅱ indicators and operability coordination coefficients were 0.10-0.36, the significance test showed P<0.05. Conclusions The design of each dimension of the index system gives full consideration to 3 dimensions of performance: task-adaptive-relationship. Representative of key indicators is strong. The Delphi method used in building is scientific and the results are reliable. The maneuverability of calculate Method is strong, easy to quantify. The feedback mechanism has a strong incentive by combining the assessment results closely with the individual interests. The establishment of the index system can provide scientific and objective basis for the full implementation of the general nursing goals management.

Objective:To establish the RPB5-mediating protein (RMP)-silenced stable cell lines and study the inhibitory effects of small interfering RNA (siRNA) targeting RMP gene on the proliferation and migration of human hepatoma SMMC-7721 cells. Methods:Three RMPi siRNAs were designed and synthesized in vitro and transfected into SMMC-7721 cells. The inhibitory effect of siRNA on RMP gene expression was measured by RT-PCR to select the best siRNA. The expression vector pGPU6-Neo-RMP-484 was transfected into SMMC-7721 cells by the lipofectamine and the cells stably expressing the siRNA were selected by G418. RT-PCR was used to detect the interference efficacy against RMP gene. Cell proliferation and adhesion were measured by MTT assay. Wound healing test was used to observe the migration ability of cells. Results:The SMMC-7721 cell lines with down-regulated RMP expression were established by using RNA interference technology. Compared with the negative control cells, expression of RMP mRNA was down-regulated by(83.67±2.56)% .The proliferation of stable-transfected cells was inhibited by(74.33±0.58)% . The adhesion capability of stable-transfected cells was enhanced but the migration capacity was decreased compared with the negative control cells. Conclusion:The pGPU6-Neo-RMP-484 cell lines with stable transfection of RMP siRNA recombinant vector are successfully screened,which can be used as a cellular model for studying the molecular mechanism of RMP. Down-regulation of RMP gene expression can effectively inhibit the proliferation, enhance the adhesion, and decrease the migration of SMMC-7721 cells.

ObjectiveTo discuss the application value of high frequency ultrasound (HFUS) characteristics, acoustic radiation force impulse (ARFI) imaging technology and contrast-enhanced ultrasound (CEUS) in the diagnosis of soft tissue hemangioma.MethodsTo retrospectively analyze the clinical data of 44 cases of soft tissue hemangioma that were treated in Capital Medical University Affiliate Beijing Chaoyang Hospital from August, 2013 to May, 2014, and to analyze the difference between the characteristics of HFUS, ARFI and CEUS in soft tissue hemangioma and normal surrounding tissue.ResultsHFUS shows the features of morphological diversity of sinus shape expansion tube structure, unclear boundary, irregular configuration, compressibility and partial strong echo in the phlebolith. Color Doppler ultrasound (CDFI), detects abundant interphase red-blue bloodstream signal slowly and consistently. The blood signal is strengthened after partial compression. CDFI shows more vein spectrum in the lesion. The discrepancy of comparison between VTQ and SWV value of soft tissue hemangioma and surrounding muscular tissue possesses statistical significance [(1.082±0.183) m/svs (1.414±0.331) m/s,P<0.01]. Ultrasound contrast can show the relationship between diseased region and surrounding tissue clearly, which is beneficial to the selection of operation method and prognosis.ConclusionThrough conventional two-dimensional ultrasound and high frequency CDFI, and further combining the acoustic pulse radiation ARFI technology and CEUS technology, the soft tissue hemangioma can’t only be more accurately diagnosed, but also provides more reliable diagnostic basis for clinic.