Objective To study the main mechanotransduction area and to estimate the overall shear deformation of rat osteoblasts in shear stress loading experiment based on data acquired from the in vitro rat osteoblast experimental, and to study the effects of four-point bending medium flow generated shear stress on cells. Methods Viscoelastic mechanics theory was used in the calculation process, the standard viscoelastic model was adopted for cells, and shear force on the cellular surface was simplified to be uniform. Results The cellular deformation caused by shear force was about one-tenth of that from tensile loading experiment which induced equivalent biological response. Conclusion In terms of mechanical stimulus induced biological responds, the mechanical transduction caused by cellular deformation in shear stress loading experiment is negligible, and the main transduction area is in the cellular membranes experiencing shear stress.

Distal tibial fractures (Distal tibial fracture) is a common clinical fractures type, more for high-energy damage, fracture type is more complicated. Because of the distal tibia special anatomic structure (soft tissue is less, less blood supply), if the operation method is not suitable or fixed equipment selection is not reasonable, because fracture healing, osteomyelitis, also can damage the function of the ankle joint. Treatment shall be based on the fracture position, type, in the process of the polluted situation and surrounding soft tissue trauma injury and so on many factors that determine the way and the internal fixation methods. This paper reviews recent year different types of distal tibial fracture fixation and fixed ways of literature research, in the treatment of distal tibial fracture clinical practice to provide the reference of objective reasonably select fixation and evaluation standard.

Intra-arterial recanalization may rapidly restore blood flow and salvage the ischemic penumbra,which has become the most effective therapeutic means for acute ischemic stroke. Many noel revascularization therapies have been used in clinical practice. This article reviews the advances in this field.

Objective To investigate theeffect of the one-lung ventilation (OLV) on open heart surgery with right subaxillary minimally invasive small incision in infants. Methods We conducted a retrospective analysis of 316 infants undergoing open heart surgery through right axillary straight mini-thoracotomy in ourhospital from Jan-uary 2014 to December 2014. Ordinary tracheal tube was inserted into left bronchus during OVL in all patients. OLV with pressure-control mode was performed with FiO2 100% and I:E 1:1 ~ 1.5 and their respiratory rate and the pressure ventilation were adjusted to maintain SpO2 and ETCO2 in the normal range. Conventional ultrafiltration was performed after CPB and fluid restrictions were intraoperatively maintained. Blood samples were obtained for deter-mination of PaO2 and PaCO2 after induction of anesthesia (T1), at the time points: OLV 10 min (T2), OLV 30 min (T3), OLV10 min after CPB (T4) and the recovery TVL (T5). The HR, MAP, incidence of pneumothorax and me-chanical ventilation time were recorded and monitored as well. Result All patients lived through perioperative pe-riod, without pneumothorax. There were no significant differences in PaCO2, HR and MAP between time points. But PaO2 at the time point of T1 significantly lowerthan those at other time points of T2, T3, T4 and T5, but its indexes at all time points were in normal range. Conclusion The appropriate skills ofintubation, rational strategy of ventila-tion and intensive prevention of the lung may be good for the safe application of OVL in open heart surgery through right subaxillary minimally invasive small incision in infants.

Lower limb ischemia is common and refractory diseases,in severe cases,it can impact on life quality even threat life.The traditional treatment contain medical and surgical,but cannot obtain satisfactory results.And therapeutic angiogenesis has achieve satisfactory results in animal experimnents and clinical study as its put forward.In recent years,Cell Therapy as one of the research hotspot,the micle aims to introduce the research of progress about therapeutic angiogenesis in detail.

OBJECTIVE:To establish a method for the content determination of chloramphenicol and salicylic acid in Acne tinc-ture. METHODS:HPLC method was adopted with the column of Shim-pack CLC-ODS with the mobile phase of methanol-water (50∶50,V/V)at the flow rate of 0.8 ml/min. The detection wavelength was 278 nm,column temperature was 35 ℃,and the vol-ume was 10 μl. RESULTS:The linear range was 2.0-10.0 μg/ml(r=0.999 2)for chloramphenicol and 5.0-25.0 μg/ml(r=0.999 1) for salicylic acid;the RSDs of precision,stability and repeatability tests were lower than 1%;the average recoveries chlorampheni-col and salicylic acid were respectively 99.77%(RSD=0.35%,n=9) and 99.29%(RSD=0.48%,n=9). CONCLUSIONS:The method is simple,rapid,accurate,specific,precise,and can be used for quality control of Acne tincture.

Humans ; MicroRNAs ; genetics ; Rhinitis, Allergic ; genetics

Objective To learn and analyze adverse reactions of compound salvia drop pills in order to promote rational use.Methods ADR reports of Compound Salvia Drop Pills were retrieve and analyze through CNKI database from 1979 to 2013.Results Ten ADR reports were found.Adverse reactions of compound salvia drop pills were mainly gastrointestinal reaction,including cardiovascular,uropoiesis,nervous reactions.Conclusion More attention should pay to the patient who have taken compound salvia drop pills.Preventive measures should be prepared for possible adverse reactions.Suitable treatment should be carried out promptly against severe ADR.

Objective To explore clinical effect of modified postural drainage for treating pulmonary infection of senile patients with gastric cancer.Methods 107 cases of patients with gastric cancer were randomly divided into two groups:control group (n =53) and treatment group (n =54),which were respectively treated by routine postoperative therapy and nursing measures and modified postural drainage based on these routine measures,and compared daily amount of expectoration sputum,positive cases of sputum culture,restore time of postoperative blood test,postoperative fever time,cases of pulmonary infection on the postoperative tenth day and length of stay.Results Daily amount of expectoration sputum of patients in treatment group was significantly higher than that of control group [(185.7 ± 23.7) ml vs.(99.7 ± 17.6) ml] (P ＜ 0.05).However,restore time of postoperative characters of blood test [white blood cell count (2.9±0.9) d vs (5.0±0.7)d,C-reaction protein (35±0.7)d vs.(7.4±0.6) d],postoperative fever time [(1.9±0.5) d vs.(3.6±1.4) d],cases of atelectasis (5 cases vs.19 cases) and length of stay [(1.9±0.5) d vs.(3.6±1.4) d] were respectively significantly less than those of control group (P ＜ 0.05).Conclusions Modified postural drainage could effectively prevent postoperative atelectasis and pulmonary infection,significantly reduced incidence of postoperative atelectasis of senile patients with gastric cancer operation,and so it was worthy of clinical application.

Objective To develop a new method for the determination of trace silver in water by flame atomic absorption(FAAS) after cloud point extraction.Methods Diethyldithiophosphate(DDTP) and triton X-114 were respectively used as the chelating agent and surfactant.The effects of experimental conditions such as acidity,concentration of chelating agent,surfactant and methanol,equilibration temperature and time,interference ion on cloud point extraction were investigated.Results Under the optimum condition,0.5 ml of 0.1 mol/L DDTP solution,0.5 ml of 50 g/L Triton X-114 and 5 ml of 1 mol/L hydrochloric acid were added and the volume was made up to 50 ml.The mixture was heated in a thermostatic bath at 40 ℃ for 15 min,the linear range of determination for silver was 0-100 ng/ml,the equation of linear regression was A = 0.005 8cAg+ 0.001 6,r = 0.999.The detection limit was 0.83 ng/ml,the recovery rate was in the range of 97%-105%,and the relative standard deviation was 3.1%(n=11) for 20 ng/ml Ag.There was no significant interference for silver solution containing 5 000 times of K+,Na+,Ca2,Mg2,NO3,SO4 + +-2-and Cl-,1 000 times of Al3+ and Zn2+,500 times of Fe2+ and Mn2+,100 times of Pb2+ and Cu2+.Conclusion The method is rapid,accurate,simple and applicable to the determination of trace silver in water samples.