The development of the minimally invasive targeted ablation tendency creates a new therapy for lung cancer. This treatment is featured with considerably extensive indication ,excellent local control and survival time, low incidence and controllable complications. There are many strong proofs of clinical efficacy and safety in this field presently.

BACKGROUND:Diameter and length of mini-implant have effects on its stability, which has been reported mostly in I and II osteoid, but less in IV osteoid. OBJECTIVE:To optimize the design of mini-implant diameter and length in IV osteoid by a three-dimensional finite element analysis. METHODS:Implant-mandible solid model was established. A 2 N orthodontic force that was perpendicular to the long axis of the implant and at a 30° angle with the distal central axis was applied onto the top of the implant. The implant was designed for different diameters (1.2-2.0 mm) and lengths (6-10 mm). Peak stress and peak displacement of the mandible were mechanicaly assessed, and stress sensitivity variables were analyzed. RESULTS AND CONCLUSION:The stress and displacement of the implant were mainly concentrated in the neck of the implant. The stress of implant-bone interface mainly focused on the contact area of the implant-cortical bone interface, and the stress of the cancelous bone was relatively smal, but the stress of the cortical bone was weakened faster. When the implant length was constant, the implant diameter had a great effect on stress changes, and the stress of bone tissue was reduced with the increase of implant diameter. When the implant diameter was constant, the implant length had no significant effect on the stress of bone tissue. To sum up, the stress of bone tissue and displacement were sensitive to the change of implant diameter rather than the change of implant length. These findings indicate that implant diameter has a greater effect on stress distribution of bone tissue than the implant length, and the implants with > 1.5 mm in diameter are suitable for IV osteoid.

BACKGROUND:A new open“C”-shaped molar band with nanocoating (patent number:ZL201110057699.1) has been invented to overcome some weakness of traditional bands and buccal tubes, which is used for molar fixation. OBJECTIVE:Using three-dimension finite element analysis software to theoretical y prove that the new band comes up to clinic requirement. METHODS:We established a finite element model of alveolar bone-tooth-band, and node domains tensile and shear loading were given. Stress distribution of the new bands through numerical simulation was predicted and calculated. Simulation of 20 N orthodontic force was applied in medial direction, distal direction and vertical direction in the three-dimensional model of a new band buccal tube and traditional band, to analyze the stress state in different directions under the force of the binder. RESULTS AND CONCLUSION:By numerical simulation of three-dimensional finite element, the stress of the new band was higher than that of the traditional band, but it could not reach the clinical cracking limit of resin reinforced glass ionomer cement. So the new band could theoretical y satisfy the clinical requirements.

BACKGROUND: Imported self-locking brackets cost much. So it is necessary to develop low-cost and easy-to-operate domestic self-locking brackets.OBJECTIVE: To introduce a newly developed self-locking brackets, and investigate the frictional forces of the brackets. DESIGN, TIME AND SETTING: Biomechanical controlled analysis was performed in the Laboratory of Harbin Medical University in January 2004. MATERIALS: Self-made self-locking brackets and domestic conventional tie-wing stainless steel brackets; domestic Ni-Ti round wire, Australian stainless steel round wire, and domestic stainless steel rectangular wire. METHODS: Two kinds of brackets were combined with three kinds of arch wires. Under the drive of micromotor, pull sensor moved at 1 mm/min. An arch wire, which was ligated in the bracket, was dragged. Thus, teeth's shift was imitated.MAIN OUTCOME MEASURES: Waveshape was observed through the use of storage oscillograph and corresponding data were recorded. Frictional force was determined and compared.RESULTS: Under the same other conditions, no matter which kind of arch wires were combined with, tie-wing brackets produced greater frictional force than self-locking brackets (P < 0.001). Under the same other conditions, no matter which kind of brackets were combined with, Ni-Ti wire produced greater frictional force than Australian stainless steel round wire and domestic stainless steel rectangular wire (P < 0.001). In addition, domestic stainless steel rectangular wires produced greater frictional force than Australian stainless steel round wires (P < 0.001). CONCLUSION: Self-locking bracket produces low frictional force, so it is fit for orthodontic doctors to use the corrective force.

Objective To investigate the clinical manifestations,laboratory findings and genetic characteristics of two cases with simple virilizing (SV)21-hydroxylase(21OHD). Methods Clinical manifestations and laboratory data were obtained. The promoter and coding areas of CYP21A2 gene were directly sequenced. In silico analysis were used to predict the function of mutations. Results Two patients presented severe virilism. The laboratory examinations showed that plasma ACTH,aldosterone,androstendione and testosterone were significantly increased compared with normal individuals. VCT scan showed hyperplasia of bilateral adrenal. Direct sequencing of CYP21A2 gene showed two complex mutations-H62L/V69L and I2g/10InsL,which were not reported previously. In silico analysis(Polyphen)showed the novel mutation V69L could probably damage the function of CYP21A2 protein. Conclusion The combined mutations,H62L/V69Land I2g/10InsL,could be associated with SV type 21-OHD phenotype.

Objective To evaluate the clinical effect of Decitabine as the basis of the chemotherapy regimen on the treatment of elderly patients with acute myeloid leukemia( AML)?Methods The clinical data of elderly patients with AML admitted to the Third People ’ s Hospital of Yancheng from January 2013 to November 2015 were retrospective analyzed?The patients were divided into Decitabine group ( cases ) and the traditional group(19 cases) according to whether or not useed Decitabine,then evaluated the efficacy?Results The overall response rate( ORR) was 70?0% in 10 patients received decitabine,47?4% in 9 patents of the traditional group, and the difference was significant( P=0?03)?At the same time,the median survival time of the two groups was 44?87 months and 13?40 months respectively,the difference was statistically significant between the two groups (P=0?04)?There was no significant difference in the incidence of adverse reactions between the two groups ( granulocyte reduction, PLT reduction, fatigue, cardiovascular events, and respiratory tract infections ) ( P>0?05)?Conclusion The effect of Decitabine as the basis of the chemotherapy regimen on the treatment of AML is better,can prolong the survival time.

Objective To analyze the risk factors of hospital acquired pneumonia (HAP) caused by nonfermentative bacteria in ICU.Methods Using binary logistic regression analysis,we reviewed the related risk factors of hospital acquired pneumonia caused by nonfermentative bacteria from January,2002 to May,2006 in ICU of our hospital.Results Univariate regression ana- lysis identified 22 variables associated with HAP,including age,diabetes mellitus,malignant tumor,chronic obstructive pul- monary disease (COPD),smoking,Glasgow Coma Scale (GCS) score,Acute Physiology and Chronic Healthy EvaluationⅡ(APACHEⅡ) score.Multivariate regression analysis confirmed 6 high risk factors:aspiration,COPD,use of antacids,seda- tive agents,mechanical ventilation and tracheal intubation or tracheostomy.Conclusions Aspiration,COPD,use of antacids, sedative agents,mechanical ventilation,tracheal intubation or tracheostomy are high risk factors associated with HAP.

We established an ELISPOT for bovine interferon-gamma (BoIFN-γ), and applied it in the diagnosis of bovine tuberculosis (bTB). Monoclonal antibodies that can bind with native BoIFN-γ were screened as the coating antibody and detecting antibody. After optimization of detecting conditions including coating antibody concentration, cell number, and detecting antibody concentration, the ELISPOT assay was established. Peripheral mononuclear cells (PBMCs) isolated from 30 cows were co-cultured with PPD, and detected with the ELISPOT assay. The optimal conditions of ELISPOT assay were 2.5 μg/mL coating antibody 2G5, 2.5 x 10(5) cells/well, and 1 μg/mL detecting antibody Bio-5E11. In these 30 cows tested both with the ELISPOT assay and the BOVIGAM kit, 11 cows were proved to be positive in ELISOPT assay with the sensitivity of 78.6%, and 12 cows were proved to be negative in ELISOPT assay with the specificity of 75%. The ELISPOT assay for BoIFN-γ could be used to detect bTB efficiently and it might be an alternative method for the diagnosis of bTB.
Animals ; Antibodies, Monoclonal ; Cattle ; Enzyme-Linked Immunospot Assay ; veterinary ; Female ; Interferon-gamma ; isolation & purification ; Sensitivity and Specificity ; Tuberculosis, Bovine ; diagnosis

The adsorption and activation of dimethyl carbonate on the surface of solid base were investigated by in situ FTIR, and the solid bases included magnesia, magnesium fluoride, Mg-Al mixed oxide and fluorine-modified Mg-Al mixed oxide. The FTIR results showed that dimethyl carbonate adsorbed on the surface of solid based by two modes of bidentate and unidentate complex. The bidentate was more active than the unidentate. Methoxyl group was formed from the adsorbed dimethyl carbonate on the surface of magnesia and Mg-Al mixed oxide. And fluomethyl group was formed from the adsorbed dimethyl carbonate on the surface of sodium fluoride. However, dimethyl carbonate on the surface of fluorine-modified Mg-Al mixed oxide showed preference for generating fluomethyl group. With the increasing of the treating temperature of samples, the methoxyl group was gradually formed on the surface. Accordingly, the fluorine-modified Mg-Al mixed oxide was found to be an excellent catalyst for methylation.