[Objective]To compare the biomechanical effect of minimally invasive injectable graf X_3(MIIGX_3) on strengthening pedicle screw fixation with that of bone cement.[Method]Eight fresh pig lumbar vertebrae were harvested.One track was made in each vertebral pedicle.Before pedicle screw fixation,one track of one side bertebra was augmented with MIIGX3,and another side vertebra with bone cement.Pullout test was performed 24 hours after the fixation,and maximum axial pullout strength was measured.[Result]The maximum axial pullout strength is 1915 N?375 N in MIIGX3 group,and 3625 N?775 N in bone cement group.There was significant difference between two groups(P

Animals ; Danazol ; pharmacology ; Endometriosis ; drug therapy ; Endometrium ; drug effects ; Female ; Interleukin-6 ; metabolism ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley

AIM:To study the effect of captopril on calcineurin and NF-?B p65 in the signal transduction pathway of the cardiovascular remodeling in hypertensive rats.METHODS:Using a animal model of hypertension induced by abdominal aortic banding,the rats were treated with captopril for 10 weeks.The blood pressure was observed with a tail cuff method.The heart weight and heart weight/body weight were measured.The expression of calcineurin and NF-?B p65 were studied by using immunohistochemistry.RESULTS:After treated with captopril,the blood pressure of the model rats was decreased(P

Objective:To investigate the protective effects of Ghrelin on LPS-induced apoptosis of human alveolar epithelial A549 cells,along with the possible molecular mechanisms.Methods: CCK-8 assay was used to examine the cell viability of A549 treated by LPS.Apoptosis of A549 cells was measured by TUNEL.NO(Nitric oxide)production was detected by NO-specific fluorescent probe 3-Amino,4-aminomethyl-2′,7′-difluoresceindiacetate(DAF-FM DA).Western blot was also performed to examine the expressions of iNOS(inducible nitric oxide synthase),AKT,ERK,p-AKT,p-ERK and apoptotic proteins,such as Bcl-2,Bax,and cleaved caspase-3.Results: LPS exposure impaired cell viability and increased apoptosis of A549 cells significantly in concentration-and time-dependent manners accompanied with increased Bax and cleaved caspase-3 production,coupled with decreased Bcl-2 levels.Meanwhile,LPS promoted iNOS expression and the production of NO.Ghrelin pretreatment ameliorated LPS-caused alterations in the ratio of Bax/Bcl-2 and cleaved caspase-3 expression.TUNEL analysis showed that Ghrelin could decrease the apoptosis induced by LPS in A549(P<0.05).Simultaneously,LPS remarkably decreased the expression of p-AKT and p-ERK in A549 cells,which was abrogated by Ghrelin pretreatment.However,Ghrelin had no significant effect on NO production induced by LPS.Conclusion: Ghrelin reduces LPS-induced apoptosis of human alveolar epithelial cells partly through activating the AKT and ERK pathway,but the level of iNOS derived NO could not be reduced.

Objective Previous studies of peripheral nerves activation during magnetic stimulation have focused almost exclusively on the cause of high external parallel electric field along the nerves, whereas the effect of the transverse component has been ignored. In the present paper, the classical cable function is modified to represent the excitation of peripheral nerves stimulated by a transverse electric field during magnetic stimulation. Methods Responses of the Ranvier nodes to a transverse-field are thoroughly investigated by mathematic simulation. Results The simulation demonstrates that the excitation results from the net inward current driven by an external field. Based on a two-stage process, a novel model is introduced to describe peripheral nerves stimulated by a transverse-field. Based on the new model, the classical cable function is modified. Conclusion Using this modified cable equation, the excitation threshold of peripheral nerves in a transverse field during MS is obtained. The modified cable equation can be used to represent the response of peripheral nerves by an arbitrary electric field.

Objective To explore the application of gastric(enteric)-pharyngeal anastomosis for cervical esophageal carcinoma. Methods The clinical data of 12 cases with surgical management of cervical esophageal carcinoma were retrospectively analyzed. Results The resectability of cervical esophageal carcinoma was 100%,no case complicated with pharyngeal fistula.Swallowing function of all cases was in a good state.The overall follow-up was 1 to 7 years,among them 9 surviving,3 dead.The surviving 5 cases are over 3 years,the ongest beyond 7 years. Conclusions Gastric(enteric)-pharyngeal anastomosis is a good primarily rehabilitating method of the cervical esophageal defect after surgical treatment of cervical esophageal carcinoma.

Albinism, Oculocutaneous ; complications ; diagnosis ; genetics ; Angelman Syndrome ; complications ; diagnosis ; genetics ; Child ; Chromosomes, Human, Pair 15 ; Developmental Disabilities ; etiology ; genetics ; Epilepsy ; etiology ; genetics ; Female ; Humans ; Intellectual Disability ; etiology ; genetics ; Karyotyping

OBJECTIVE: To determine the chlorpyrifos in human blood by liquid chromatography-tandem mass spectrometry and to validate its application in poisoning cases. METHODS: The samples were extracted by a simple one-step protein precipitation procedure. Chromatography was performed on a Capcell Pack C18 MGII column (250 mm x 2.0 mm, 5 μm) using an isocratic elution of solvent A (0.1% formic acid-water with 2 mmol/L ammonium acetate) and solvent B (methanol with 2 mmol/L ammonium acetate) at 5:95 V:V). RESULTS: The linear ranged from 5 to 500 ng/mL (r = 0.998 7). The limit of detection (LOD) and the lower limit of quantification (LLOQ) were 2 ng/mL and 4 ng/mL, respectively. For this method, the precision and accuracy of intra-day and inter-day were < 10% and 97.44%-101.10%, respectively. The results in stability test of long-term frozen were satisfied. The matrix effect, recovery and process efficiency were 64.97%-86.81%, 76.70%-85.52%, and 55.57%-66.58%, respectively. CONCLUSION This method can provide a rapid approach to chlorpyrifos extraction and determination in toxicological analysis of forensic and clinical treatment.
Chlorpyrifos/blood* ; Chromatography, High Pressure Liquid/methods* ; Chromatography, Liquid/methods* ; Humans ; Limit of Detection ; Poisoning ; Reproducibility of Results ; Tandem Mass Spectrometry/methods*

Objective To understand how Vibrio vulnificus hemolysin (VvhA) affects the viability of murine liver CD4+ T cells as well as its effects on the numbers of mitochondria and the expression of CD62L. Methods The primary murine liver monocytes (MNs) were isolated from C57BL/ 6 mice and then treated with recombinant VvhA (rVvhA) for 6 hours in vitro. The viability of murine liver CD4+T cells and the expression of CD62L were measured by staining with anti-mouse CD4, CD8, CD44, CD62L and cell via-bility fluorescent dye or fluorescent antibody. Moreover, the cells were simply incubated with MitoTracker or JC-1 probes to label mitochondria and mitochondrial membrane potential, which were further analyzed by using flow cytometry analysis. Results With the increase in the doses of rVvhA, the viability of murine liv-er CD4+T cells was decreased from 81. 5% to 15. 8% . The expression of CD62L on the surface of murine liver CD4+T cells was dramatically decreased. Both the murine liver na?ve and effector CD4+ T cells were sensitive to the cytotoxicity of rVvhA. Moreover, treating murine liver CD4+ T cells with rVvhA resulted in significantly decreased numbers of mitochondria and lower mitochondrial membrane potential. Conclusion The cytotoxicity of rVvhA to murine liver CD4+T cells might be achieved through inhibiting the expression of CD62L, decreasing the numbers of mitochondria and lowering mitochondrial membrane potential.

Objective: To investigate the influence of esculentoside A（EsA） on production of IL-1 and TNF by rabbit synovial cells induced by LPS. Methods: levels of IL-1 and TNF in the supernatant of rabbit synovial cell were determined by examining proliferation of thymic cells and by bioassay L929 cells as target cells, respectively. Results: EsA in 5-40 μg/ml could significantly inhibit the production of IL-1 and TNF from rabbit synovial cells induced by LPS. Conclusion: EsA can inhibit the production of IL-1 and TNF from synovial cells. It suggests that EsA may play a role in improving the rheumatoid arthritis.