Objective:To compare the adaption of cobalt-chromium prostheses fabricated by selective laser melting(SLM)and conven-tional lost wax technique(LW)method.Methods:Cobalt-chromium crowns and three-unit fixed dental prostheses(FDPs)were fabrica-ted by selective laser melting(SLM)or by conventional lost wax technique(LW)respectively(n =5).Marginal fit and internal fit were examined using a light-body silicone.After setting,each silicon film was cut into 2 parts and the thickness of silicon layer was measured at 1 00 ×magnification using a digital microscope,the data of marginal gap(MG)and internal gap(IG)were statistically analysed by ANOVA and SPSS statistical package version 1 7.0.Results:The MG and IG(μm)of cobalt-chromium alloy crowns in EOS M270 group were 42.28 ±1 1 .58 and 1 25.75 ±47.67,in EOS M280 group 46.54 ±8.4 and 1 28.22 ±54.1 8,in LW group 48.66 ±1 2.08 and 1 35.37 ±46.89.The MG and IG(μm)of three-unit FDPs in EOS M270 group were 40.55 ±1 0.04 and 1 33.09 ±39.80,in EOS M280 group 45.36 ±1 0 and 1 38.94 ±50.61 ,in LW group 54.24 ±1 2.04 and 1 51 .87 ±61 .94(P <0.05),respectively.Conclu-sion:The marginal fit of the SLMgroup is superior to that of the LW group and significantly smaller than 1 20 μm of clinical generally accepted standards.SLMsystem can satisfy the clinical requirements.

Fatigue not only affects people′s lives and work, but also causes diseases .Numerous studies have shown that some phytochemicals can promote body energy metabolism and regeneration , improve physical condition , resist fatigue growth and accelerate fatigue alleviation .This paper reviewed the recent research progress , domestic and overseas , in the anti-fatigue effect of phytochemicals .

This article discussed the library services for readers from their needs of TCM ancient literature.We believed the library service should focus on the readers needs to elevate its knowledge service ability,to establish new service mode,and to meet the TCM ancient literature needs of readers greatly.

Objective To investigate the effects of oxidative stress on homocysteine and related amino acids metabolism in methionine-loading BRL rat hepatocytes.Methods Cultured BRL rat hepatocytes were divided into control and oxidatively stressed group(100 μmol/L H2O2 was added in culture medium for 2 hours),methionine group(50 mmol/L methionine was added in culture medium for 1 hour),and oxidatively stressed + methionine group(100 μmol/L H2O2 was added in culture medium for 2 hours + 50 mmol/L methionine was added in culture medium for 1 hour).At the end of the experiment,culture fluid was collected.Homocysteine,cysteine,and glutathione were measured by high-performance liquid chromatography,and amino acids were assayed by amino acids analyzer.Results Compared with the control group,the contents of homocysteine[(3.76 ± 0.22)vs.(1.54±0.05)μmol/L,P=0.000]and cysteine[(199.80 ±8.75)vs.(99.11 ±2.47)μmol/L,P=0.000]significantly increased in methionine group,and the contents of homocysteine[(3.84 ± 0.34)vs.(1.54 ±0.05)μmol/L,P=0.000]and cysteine[(200.66±8.60)vs.(99.11 ±2.47)μ mol/L,P=0.000]also increased in oxidatively stressed + methionine group.Compared with oxidatively stressed group,the concentrations of homocysteine[(3.76 ± 0.22)vs.(1.67 ± 0.13)μmol/L,P =0.000],cysteine[(199.80 ± 8.75)vs.(82.64±15.88)μmol/L,P=0.000],and glutathione[(1.50 ±0.14)vs.(1.00 ±0.11)μ mol/L,P=0.011)]significantly increased in methionine group,and the concentrations of homocysteine[(3.84 ± 0.34)vs.(1.67±0.13)μmol/L,P=0.000],cysteine[(200.66±8.60)vs.(82.64±15.88)μmol/L,P=0.000]and glutathione[(1.40 ± 0.30)vs.(1.00 ± 0.11)μmol/L,P =0.028]significantly increased in oxidatively stressed + methionine groups.Compared with the control group,the contents of serine[(12.41 ± 1.51)vs.(24.00 ±2.54)mg/L,P =0.000],glutamate[(33.31 ±0.17)vs.(43.10 ±0.52)mg/L,P =0.000]and glycine[(6.23 ± 0.18)vs.(24.66 ± 10.87)mg/L,P =0.000]significantly decreased,while taurine [(7.99 ±0.16)vs.(6.17 ±0.15)mg/L,P =0.000]increased significantly in oxidatively stressed group.Compared with the oxidatively stressed group,the concentrations of serine[(16.98 ± 0.39)vs.(12.41 ± 1.51)mg/L,P=0.006)]and glutamate[(35.44 ±0.82)vs.(33.31 ±0.17)mg/L,P =0.002]in methionine group significantly increased,while taurine[(3.77 ±0.16)vs.(7.99 ±0.16)mg/L,P =0.000]significantly decreased in methionine group.Compared with the methionine group,the contents of serine[(12.59 ± 0.66)vs.(16.98±0.39)mg/L,P=0.008],glutamate[(30.87±0.60)vs.(35.44±0.82)mg/L,P=0.000]significantly decreased while taurine[(4.37 ± 0.12)vs.(3.77 ± 0.16)mg/L,P =0.001]in oxidatively stressed + methionine group significantly increased.Conclusion Oxidative stress can somehow promote homocysteine production in methionine loading BRL rat hepatocytes,but it is not the main effects.

ObjectiveTo evaluate the long-term therapeutic efficacy of muscle-region alignment needling plus dermalneedle therapy in treating post-stroke upper-limb spasticity.MethodTotally 488 patients with post-stroke upper-limb spasticity were randomized into a treatment group and a control group, 244 in each group. Besides theessentialrehabilitation treatment, the treatment group was intervened by muscle-region alignment needling plus dermal needle therapy, while the control group was given regular Western medication.Thetwo groups were intervened for 3 weeks and were followed up for 6 months. The neurologic function, Functional Comprehensive Assessment (FCA), and Stroke Speciality-Quality of Life (SS-QOL) were observed for the follow-up study.ResultThe total effective rate was 93.4% in the treatment group versus 61.5% in the control group, and the difference was statistically significant (P<0.05); the neurologic function, FCA score, and SS-QOL score in the treatment group were significantly superior to that in the control group at the end of the follow-up study (P<0.05).ConclusionMuscle-region alignment needling plus dermal needle therapycan produce a content long-term therapeutic efficacy in treating post-stroke upper-limb spasticity.

Objective To study the relationship between vitamin D deficiency and severe bronchial pneumonia in children. Methods A total of 58 children with severe pneumonia complicated by a lack of vi-tamin D from January 2011 to December 2013 were enrolled in this study,the serum 25-( OH) D3 was detec-ted by the high performance liquid chromatography-tandem mass spectrometry. All the children were random-ly divided into two groups,the vitamin D treatment group( observation group) and without vitamin D treat-ment group(control group),control group received conventional treatment,and the observation group re-ceived vitamin D based on the same treatment with the control group. Results The serum 25-( OH) D3 of the observation group increased significantly( P<0. 01 ) . ( 2 ) The symptoms such as cough, asthma, fever and pulmonary rales in the observation group disappeared more quickly than that of the control group,and the av-erage cure days of heart failure,respiratory failure and encephalopathy as well as the average length of stay in the observation group were less than those of control group,and there were significant differences between two groups(P<0. 01). (3) The total efficiency of the observation group and control group was 96. 42% and 73. 33% respectively,and there was significant difference between two groups(χ2 =6. 693,P<0. 01). (4) Blood oxygen pressure and oxygen saturation of the observer group were significantly improved,CO2 partial pressure decreased obviously, the differences were statistically significant between two groups ( P <0. 01 ) . Conclusion During the treatment periods in children with severe pneumonia,vitamin D supplements could relieve symptoms promptly,shorten the duration,improve the 25-( OH) D3 levels,and vitamin D deficiency may also be the underlying cause of severe pneumonia in children.

Aim To observe the effects of effective fraction of Epimedium,Astragalus,Radix Puerariae on behavioral and pathological changes in a transgenic mouse model of Alzheimer’s disease.Methods Six-month-old APPswe /PS1 ΔE9 transgenic mice were ran-domly divided into 2 groups:model group and effective fraction group,1 0 mice each group.The mice in the effective fraction group were treated with the effective fraction of Astragalus,Radix Puerariae,Epimedium compound for 8 weeks.The C57BL/6J mice were used as negative control group.After 8 weeks,the learning and memory function were measured by Morris water maze,the pathological changes in brain tissue were ob-served by Modified Bielschowsky staining and Nissl 's staining.Results During place navigation trial,the escape latency in the APPswe /PS1 ΔE9 double transgenic model mice was longer than those of the mice of C57 (P <0.05),the escape latency in the mice of effec-tive fraction group was significantly reduced than those of the mice in model group (P <0.05).During spatial probe trail,the platform-crossing times in the APPswe /PS1 ΔE9 double transgenic mice were different from the mice of C57 (P <0.05),the platform-crossing times in the mice of effective fraction group were significantly increased than those of the mice in model group (P <0.05).The average swimming velocity in the APPswe /PS1 ΔE9 double transgenic model mice was increased than that of mice of C57 (P <0.05 ),there was no significant difference between effective fraction group and model group (P > 0.05 ). The Modified Bielschowsky staining shows that the neuron fibers of the cerebral cortex of APPswe /PS1 ΔE9 double transgenic mice were enlarged,swelling,and dense.There were senile plaques and nerve fiber tangles in the cerebral cortex of APPswe /PS1 ΔE9 double transgenic mice.The neuron fibers of mice in the effective fraction group were relieved;there was a small amount of senile plaque.The Nissl’s staining shows that the neurons of the cerebral cortex of APPswe /PS1 ΔE9 mice were edema, the number of cells were decreased.The mice in the effective fraction group were free of the disease.Con-clusion The double transgenic APPswe /PS1 ΔE9 mice of AD can simulate the specific pathogenesis of AD, which may be the efficient experimental animal model. The effective fraction of epimedium,astragalus and ra-dix puerariae may have a neuroprotective effect against AD via improving the learning and memory ability,and reduce the cerebral cortex nerve fiber tangles,senile plaques and neurons edema changes.

Objective To study the effect of auricular point sticking on the cerebrovascular reactivity in hypertension patients of different stages by using Transcranial Doppler (TCD) technology.Method Three hundred hypertension patients were randomized into a treatment group (auricular point sticking) of 180 cases and a control group (medication) of 120 cases. The cerebral arterial hemodynamic indexes were observed and analyzed by TCD before and after intervention.Result In comparing the improvements of cerebral arterial hemodynamic indexes in stage 1-2 hypertension patients, the treatment group was significantly superior to the control group (P＜0.05,P＜0.01); in stage 3 hypertension patients, the improvements of cerebrovascular hemodynamics of the treatment group were significantly better than those in the control group (P＜0.05,P＜0.01).Conclusion Auricular point sticking can improve the cerebrovascular hemodynamics and effectively improve the cerebrovascular reactivity of hypertension patients. TCD can help observe and estimate the cerebral arterial function of hypertension patients, and prevent and intervene in cerebrovascular diseases.

Objective:To evaluate the fit of titanium alloy removable partial denture framework fabricated by selective laser melting(SLM) technique.Methods:7 Kennedy Ⅲ Ti-6Al-4V removable titanium alloy partial denture frameworks were fabricated by SLM technology.An optical scanner was used to scan the gypsum model adhered with the silicone rubber film obtained by the impression method before and after removal of the film.Geomagic Qualify 2013 software was used to analyze the gap between the model and the tissue surface of the major connector of the framework,the fit of the frame work was evaluated.Results:The overall 3D deviation between the titanium alloy frameworks and the gypsum model was (0.221 9±0.07) mm.Conclusion:The fit of the titanium alloy removable partial denture framework made by SLM technology can basically met the clinical requirements.