Objective To assess the value of high-frequency ultrasound guided venipuncture of forearm superficial veins. Methods Forty patients with failure of direct venipuncture were given high-frequency ultrasound guided venipuncture. After the direction and depth of superficial veins were identified by high-frequency ultrasonography, a re-puncture was performed. Real-time ultrasonic guidance was employed in case of necessity. Results High-frequency ultrasound identification was used in 11 patients, and real-time ultrasonic guidance was used in 29 patients. All the procedures were successfully completed on one session. Conclusions High-frequency ultrasound guided venipuncture of superficial veins is a simple method without complications, being worthy of wide clinical application.

Objective To verify the performance of quantitative detection of interleukin-6 by using IMMUNITE1000 chemilumi-nescence analyzer.Methods According to the requirements of International Organization for Standardization(ISO)1 5 189,serum specimen were collected and levels of IL-6 were detected.The precision,accuracy,analytical measurement range,reportable range amd normal reference range of quantitative detection of interleukin-6 by using IMMUNITE1000 chemiluminescence analyzer were verified,and its performance was evaluated.Results The coefficient variation(CV)of between-day precision of high and low value was 6.42% and 1.97% respectively,and that of within-run precision was 3.40% and 3.82% respectively.Compared the test re-sults with the target values,the bias % was 0.91%.The regression equation:Y =0.986X - 7.1 (r 2 = 0.999,P < 0.05 ).With 27 times diluted,the recovery rate was from 97% to 100%,and the clinical reportable range was 2 to 27 000 pg/mL.The 95% refer-ence interval ranged from 0 to 5.3 pg/mL.Conclusion The performance of this system meets the manufacturer′s declaration,and could satisfy the quality requirements of clinical laboratory.

Objective To investigate the effects of total alkaloids in Buxus microphylla leaves (ABML) on isolated rats thoracic aorta rings,and then to explore the possible mechanisms underlying the effects.MethodsThoracic aortas of Wistar rats were isolated,removed,and mounted onto an organ bath.The effects of ABML at different concentration on the contraction of isolated thoracic aorta rings (with and without endothelium) precontracted with KC1 or PE were observed with organ bath technique.Dose-effect curves of CaCl2 were recorded by organ bath technique.The concentration of intracellular Ca2+ ([Ca2+]i) increased by PE,KCI,and caffeine in the presence of ABML was determined using Ca2+ sensitive fluorescence indicator Fura-2/AM loaded thoracic aorta vascular smooth muscle (VSM) cells of rats.ResultsIn aorta rings precontracted with PE and KCI,ABML produced concentrationdependent relaxation in both intact and denuded endothelium ring groups.There was no difference in the inhibition of contraction between the intact and denuded endothelium ring groups at the same concentration.Exposure of isolated thoracic aorta rings to ABML led to a significant reduction in the contracting response induced by CaCI2,and shifted the cumulative concentration-response curves to right.ABML could significantly inhibit the extracellular Ca2+ influx induced by PE and KCI under [Ca2+]0 of 1.5 mmol/L,with inhibitory ratios of 40.2％ and 49.9％,respectively.In the case of Ca2+-free,ABML could significantly inhibit the intracellular Ca2+ release induced by PE,with inhibitory ratio of 72.4％.ConclusionABML relaxes thoracic aorta VSM cells by suppressing influx of extracellular Ca2+ via voltage-dependent Ca2+ channel and receptor-operated Ca2+ channel.

Objective: To observe the short-term effects of electroacupuncture at different acupoints on patients with hemiplegia after cerebral infarction. Methods: Patients with cerebral infarction were randomly allocated into a group of electroacupuncture nerve trunk and a group nerve trunk or routine acupoints, respectively, once a day, for 14 d. Results: Electroacupuncture at nerve trunk had better effects than at routine acupoints. The short-term improvement of electroencephalogram had significant differences (P＜0.05). Conclusion: Electroacupuncture at the nerve trunk could improve the neurologic impairment and brain function, and it has a better result than routine electroacupuncture.

To investigate the mechanism of Fuzheng Huayu recipe (FZHY), a compound traditional Chinese herbal medicine, against liver fibrosis related to transforming growth factor-β1 (TGF-β1)/Smads signaling transduction.

Objective:To observe the expression of B7-H4 in experimental autoimmune myocarditis (EAM).Methods:BALB/c mice were randomly divided into 2 groups:the control group and the experimental group.The mice of experimental group were injected with myosin to establish EAM models , while the mice of control group were injected with complete Freund 's adjuvant and normal saline.All the mice were killed separately at the 14th,21st,30th and 45th day for lymphocyte proliferation assay ,hematoxylin-eosin staining,immunohistochemical staining and real-time PCR.Results:The inflammation infiltration of heart was most serious at the 14th and 21st day,then it was gradually relieved with time;the results of lymphocyte proliferation assay and real-time PCR were similar to that of the inflammation infiltration of heart ,which were in high level at the 14th and 21st day,and they were both higher than that of the control group ( P<0.05 );B7-H4 protein were only detected in the experimental group ,and it was constantly expressed during the whole experiment on the endothelium of heart with myocarditis.Conclusion:B7-H4 participates in the progress of EAM ,and it may be a new way of studying the mechanism of myocarditis.

Objective To investigate the correlation between HCY (Homocysteine),folate,vitamin B12 and head and neck vascular stenosis in patients with ischemic cerebrovascular disease.Methods 225 patients with ischemic cerebrovascular disease in Tangdu Hospital of the Fourth Military Medical University were enrolled in the study from April 2016 to October 2016.The serum levels of HCY,folate and vitamin B12 were detected.CT angiography (CTA) was uesd for patients with head and neck vascular scanning.According to whether the presence of vascular stenosis,patients were classified as no vessel stenosis group and vascular stenosis group.According to the degree of stenosis,patients were classified as no vascular stenosis group,mild moderate stenosis group and severe stenosis group.Results The HCY levels in the vascular stenosis group were significantly higher than no vessel stenosis group,while the levels of folate and vitamin B12 were significantly lower than no vessel stenosis group,the differences were statistically significant (t=9.656,7.140 and 8.350,all P＜0,01).The HCY levels in mild moderate stenosis group and severe stenosis group were significantly higher than no vessel stenosis group,and the HCY levels in severe stenosis group were significantly higher than mild moderate stenosis group,the differences were statistically significant (t=6.108,9.401 and 5.273,all P＜0.01).The folate levels in mild moderate stenosis group and severe stenosis group were significantly lower than no stenosis group,the differences were statistically significant (t=5.574 and 5.988,all P＜0.01).The vitamin B12 levels in mild moderate stenosis group and severe stenosis group were significantly lower than no stenosis group,the differences were statistically significant (t=4.548 and 7.816,all P＜0.01).The degree of head and neck vascular stenosis and serum levels of HCY were positively correlated (r=0.331,P＜0.01).The degree of head and neck vascular stenosis and levels of vitamin B12 were negatively correlated (r=-0.279,P＜0.05).Conclusion The levels of HCY,folate and vitamin tB12 were closely related to the degree of head and neck vascular stenosis.HCY,folate,vitamin B12 and head and neck CTA play important roles in patients with ischemic cerebrovascular disease clinically.

OBJECTIVE To investigate the clinical characteristics,treatment and prognosis of laryngotracheal stenosis due to relapsing polychondritis (RP).METHODS The clinical data of 6 patients with laryngotracheal stenosis due to RP were reviewed retrospectively.RESULTS From 1996 to 2006,6 patients with laryngotracheal stenosis due to RP were managed in our hospital.Respiratory tract lesions were diffuse and extensive.Of them,4 patients accepted laryngotracheal reconstruction using surgical flaps with or without pedicle,2 accepted dilation of trachea in thoracic segments.Five patients were cured without recurrence.CONCLUSION Treatment of laryngotracheal stenosis due to RP is very difficult.If the surgical opportunity and methods were selected correctly according to each patient,good results can also be obtained.

Objective: To identify the differential proteins in the serum with anti-asthma activity of acupuncture to pinpoint the substance basis of anti-asthma activity of acupuncture by proteomics method. Methods: Two-dimensional electrophoresis of protein was employed to analyze the differential proteins in the serum with anti-asthma activity of acupuncture, and identify the differential proteins with mass spectrum technique. Results: In adrenalectomy (ADX)-asthma acupuncture group and asthma acupuncture group, two-dimensional electrophoresis showed that there was an obvious fuscous point (MW=44.1kD, PI=5.1), which was 60S ribosomal protein L13, or hypothetical protein FLJ32191 analyzed by mass spectrum technique, different from other groups. In ADX-asthma acupuncture group, there were two obviously fuscous points (MW=39.SkD, PI=4.9 and MW=39.SkD, PI=5.0), which were zinc finger protein 208, and thyroid hormone receptor-associated protein analyzed by mass spectrum technique, and two special proteins (MW=17.3kD, PI<4.5 and 16.9kD, PI<4.5), which were Cyclophilin A and zinc finger protein 91 analyzed by mass spectrum technique, different from other groups. Conclusion: There are multi-target effects regulating the whole body in acupuncture treating asthma relating to immunoloregulation, gene expression, and protein synthesization. The effects of acupuncture on the response proteins need further research.

Objective To evaluate the application of liver ultrasound hemodynamic parameters in diagnosing moderate to severe esophageal varices(EV) among patients suffering from portal hypertension.Methods The control group consisted of twenty nine patients without EV.Sixty patients with EV diagnosed by endoscopy were divided into two groups equal in number according to grade of EV.One being mild,the other was moderate to severe.All patients underwent color Doppler flow imaging and contrastenhanced ultrasound,and the dynamic angiography data were collected.Time intensity curves were drawn by software to acquire the arrive time of hepatic artery (HAAT),hepatic vein (HVAT) and portal vein (PVAT).Then HV-HA interval time,PV HA interval time and PV-HV interval time were calculated.The quantitative parameters including HV-HA,PV-HA,PV-HV,damping index (DI) of hepatic vein and portal vein velocity(PVV) were compared.ROC curve was used to assess the value of the parameters above in predicting moderate to severe esophageal varices.Results The difference of PV-HV,PV HA,HV-HA,PVV,DI between the control and the moderate to severe group were statistically significant (P =0.000).PV-HV,PV-HA,HV-HA,DI in moderate to severe group showed statistically significant compared with mild group (P =0.000,P =0.002,P =0.000,P =0.002),however,PVV had no significant (P ＞0.05) difference between the two groups.Mild group contrasted to the control group,the differences of PV-HA and HV-HA were statistically significant (P =0.000),whereas PV-HV,DI,PVV displayed no significant (P ＞0.05) difference.The areas under ROC curve of PV-HV,PV-HA,HV-HA,PVV,DI were 0.952,0.775,0.847,0.699,0.808 respectively.The best cutoff value of PV-HV for diagnosing moderate to severe EV was 0.5 second,with sensitivity and specificity of 86.2％ and 94.8％ respectively.Conclusions The liver ultrasound hemodynamic parameters is helpful in the diagnosis and evaluation of moderate to severe esophageal varices,which is expected to become a new noninvasive method.