Aim To study the active constituents for the treatment of rheumatoid arthritis from the ethyl acetate extracts of the roots of Lasianthus acuminatissimus Merr. Methods Various chromatographic techniques were used to separate and purify the constituents. Their structures were established on the basis of 1D, 2D NMR and HRMS spectroscopic analyses and their preliminary evaluation of anti-inflammation effect on the release of β-glucuronidase was carried out. Results Eight compounds were isolated and identified as lasianthuslactone A ( 1 ) , codonolactone ( 2 ), 2, 5-dimethoxy-1,4-benzoquinone ( 3 ) ,uncargenin A (4) , nonadecyl alcohol (5) , 13-docosenoic acid (6) , tetracosanoic acid (7) and β-sitosterol (8). Compound 3 showed a significant inhibitory effect on release of β-glucuronidase rat polymorphous nuclear leukocytes activated by platelet activating factor (PAF). Conclusion Compound 1is a new one, the others were isolated from the plant for the first time and 3 is one of active antiinflammation compound in the plant.

In the essential Oil of Ligusticum sinense Oliv cv.Chaxiong ,five phthalides with anticonvulsive activities were isolated and identified as butylidenephthalide(Ⅰ),ligustilide(Ⅱ),butylphthalide(Ⅲ),neocnidilide(Ⅳ),and senkyunolide(Ⅴ)on the basis of spectral data

Objective:To study the effect of the cyclic-tension force on the expression of matrix metalloproteinase-3 ( MMP-3) mRNA in osteoclasts. Methods: Bone marrow cells were cultured and induced by the combination of IL-6 and 1,25(OH) 2D 3 and identified. The bone marrow cells were seeded onto elastic 6-well culture plate at a density of 2?105 cells/ml in 2ml in each well and cultured for 7 days. Then the cells were subjected to 12% elongation by a strain unit at 6 cycles/min (i.e.5-s elongation and 5-s relaxation) . After 24 hours of stretching, the expression of MMP-3 mRNA in osteoclasts were determined by in situ hybridization analysis. Results:The stretched osteoclasts showed enhanced MMP-3 mRNA expression level. Conclusion: The mechanical stretching may affect the bone-resorbing activity by up-regulated the expression of MMP-3 mRNA in osteoclasts.

Objective To extract alkaloids from Corydalis decumbens (AsCD) by supercritical CO2 fluid extraction (SFE) and to evaluate protective effects of AsCD against hydrogen peroxide (H2O2)-induced apoptosis in rat PC12 cells.Methods AsCD were extracted by SFE and oxidative damage PC12 cells model was induced by H2O2.The survival rate of the cells was determined by MTT assay; Lactate dehydrogenase release was determined by ultraviolet spectrophotometry; Flow cytometry was used to detect apoptosis; Caspase-3 mRNA and protein were determined by real-time PCR and Western blotting assay,respectively.Results AsCD remarkably reduced the cytotoxicity,prevented membrane damage,and inhibited cell apoptosis.AsCD inhibited Caspase-3 mRNA and protein expression induced by H2O2 in PC12 cells.Conclusion AsCD possess protective effects against H2O2-induced apoptosis in PC12 cells,and the mechanism of AsCD responsible to the inhibition of apoptosis is possibly attributed to thedown-regulating Caspase-3 expression.AsCD might be useful in the treatment of oxidative stress-related neurodegenerative diseases.

Objective To explore risk factors for healthcare-associated infection (HAI)in patients undergoing craniocerebral operation,and provide guidance for the prevention of HAI in patients in department of neurosurgery. Methods 200 patients who underwent craniocerebral operation in a department of neurosurgery from November 2013 to November 2014 were surveyed,risk factors for HAI were analyzed.Results Among 200 patients undergo-ing craniocerebral operation,81 patients developed 99 cases of HAI,HAI rate was 40.50%,HAI case rate was 49.50%;the top five HAI sites were lower respiratory tract,urinary tract,intracranial site,bloodstream,and in-testinal tract.Univariate analysis showed that patients’age ≥60,Glasgow Coma Scale (GCS)<15,intraoperative blood loss ≥800 mL,staying in intensive care unit(ICU),indwelling gastric tube,ventricular drainage,using ventilator,tracheotomy,and using H2 receptor antagonists were important risk factors for HAI in patients undergo-ing craniocerebral operation (all P <0.05).Multivariate logistic regression analysis showed that patients’age ≥60, GCS<15,staying in ICU,and using H2 receptor antagonists were independent risk factors for HAI in patients un-dergoing craniocerebral operation.Conclusion Strengthening the surveillance of HAI patients undergoing cranioce-rebral operation and realizing risk factors for HAI are helpful for taking comprehensive prevention measures and re-ducing the incidence of HAI.

Objective In response to the requirements of the new nation health care reform for the first diagnosis sinking .To in‐vestigate hospital as the center ,radiation surrounding ,we build the telemedicine system .Methods We analyzed the requirement ,de‐sign the architecture of the system through the way of TOGAF .Results The telemedicine system including telemedicine ,remote diagnosis and distance education was built .Conclusion The design ,establishment and application of the telemedicine system has an important influence and meaning .

Objective To investigate the effect of sasanquasaponin (SQS) on injury of endothelial cells induced by hypoxia-reoxygenation and neutrophil adhesion, and its possible mechanisms. Methods Human umbilical vein endothelial cells (HUVEC) were exposed to normoxia or hypoxia-reoxygenation in the absence or presence of SQS (10.0, 1.0, and 0.1 ?mol/L). Lactate dehydrogenase (LDH) activity was determined in cultured HUVEC supernatants. HUVEC survival rate, neutrophil adhesion rate, malondialdehyde (MDA) level superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were measured. Neutrophil adhesion was assayed in additional HUVEC treated as above. Results The results showed that hypoxia-reoxygenation resulted in HUVEC injury and enhancement of neutrophil adhesion, with the increase in LDH activity, MDA level, and adhesion rate as well, conversely, with the decrease in activity of SOD and GSH-Px; SQS antagonized these changes in a concentration-dependent manner. Conclusion SQS may protect HUVEC against hypoxia-reoxygenation injury and its mechanism appeares to be related to anti-lipoperoxidization and anti-adhesion of white blood cell.

Objective Using the Chinese anthropomorphic chest phantom to measure the absorbed dose of various tissues and organs under different noise index, and to assess the radiation dose of MSCT chest scanning with the effective dose(ED). Methods The equivalence of the Chinese anthropomorphic chest phantom(CDP-1C) and the adult chest on CT sectional anatomy and X-ray attenuation was demonstrated. The absorbed doses of various tissues and organs under different noise index were measured by laying thermoluminescent dosimeters(TLD) inside the phantom, and the corresponding dose-length products(DLP) were recorded. Both of them were later converted into ED and comparison was conducted to analyze the dose levels of chest CT scanning with automatic tube current modulation (ATCM) under different noise index. Student t-test was applied using SPSS 12.0 statistical software. Results The Phantom was similar to the human body on CT sectional anatomy. The average CT value of phantom are -788.04 HU in lung,45.64 HU in heart,65.84 HU in liver,254.32 HU in spine and the deviations are 0.10%,3.04%, 4.49% and 4.36% respectively compared to humans. The difference of average CT value of liver was statistically significant(t=-8.705,P＜0.05),while the differences of average CT values of lung, heart and spine were not significant(t value were -0.752,-1.219,-1.138,respectively and P＞0.05).As the noise index increased from 8.5 to 22.5, the DLP decreased from 393.57 mGy·cm to 78.75 mGy·cm and the organs dose declined. For example, the average absorbed dose decreased from 22.38 mGy to 3.66 mGy in lung. Compared to ED calculating by absorbed dose, the ED calculating by DLP was lower. The ED values of the two methods were 6.69 mSv and 8.77 mSv when the noise index was set at 8.5. Conclusions Application of the Chinese anthropomorphic chest phantom to carry out CT dose assessment is more accurate. The noise index should be set more than 8.5 during the chest CT scanning based on ATCM technique.

Objective To investigate the mRNA and protein expressions of Nav 1.1 and Nav 1.2 in hippocampus following traumatic brain injury ( TBI) in rats.Methods After the lateral fluid percussion model was established in adult male Sprague Dawley rats,the rats were sacrificed at 2,12,24 and 72 hours after percussion and collected ipsilateral hippocampus for detecting mRNA and protein expressions of Nav 1.1 and Nav 1.2 by means of fluorescent quantitation RT-PCR,Western blot and immunofluo rescence staining.Results The mRNA expressions of Nav 1.1 and Nav 1.2 were significantly down-regulated (P<0.01) in hippocampus and reached the lowest level at 2 hours following TBI.The protein expression of Nav 1.1 was significantly down-regulated (P<0.01) but recovered near to level of control group at 72 hours after TBI.While there was no statistical difference on protein expression of Nav 1.2 in hippocampus after TBI compared with control group (P>0.05).Conclusion TBI induces significant down-regulated mRNA and protein expressions of Nav 1.1 in the hippocampus,which may be one of molecular mechanisms for functional alternation of sodium channels and excitotoxic action following TBI.