Objective To survey the shade-matching practice in Shenzhen city so as to strengthen communication between dentists and dental technicians,and to improve the successful rate of shadematching in prosthetic dentistry.Methods Questionnaire surveys were conducted in 251 dentists in some dentistry institutions of Shenzhen during the period from Aug 1st,2008 to Aug 27th,2010,including shade-guide selection,shade-matching technique and communication between dentists and technicians.Questionnaires were collected and statistically analyzed.Results From the analyzed ques tionnaires on shade-taking of 202 dentists,38.6 ％ of dentists evaluated color of restorations with Vitapan 31-Master shade guides; 17.7 ％ preferred Vitapan Classical shade guides,while 41.4 ％ used both.55.9 ％ dentists performed shade-matching in an inappropriate way with Vitapan 3D-Master shade guides.41.6 ％ of them never or rarely cornmunicated with dental technicians about color matc hing problems.Conclusions Shade guides are commonly and widely used by dentists in Shenzhen area.However,and few attentions are paid to a correct way of shade-matching and communications with dental technicians,which might be one of the main causes responsible for color mismatch.

Objective To evaluate and compare the diagnostic validity of MRI and DSA in patient suspected with spinal dural arteriovenous fistula(SDAVF). Methods A retrospective review on clinical data of 25 cases diagnosed as SDAVF was done to analyze the characteristics of SDAVF on both MRI and DSA. Results The sagittal or cornoral plane of the T 2 -weighted MRI could best show the extraspinal vascular abnormalities and secondary anomalies, while the orifices of the SDAVF, feeding arteries, draining veins could be satisfactorily demonstrated on the DSA. Conclusions The diagnosis of SDAVF can be made in directly on DSA findings, MRI can delineate the extraspinal vascular abnomalities and secondary anomalies but not the whole picture.

Objective To evaluate efficacy and clinical feasibility of 125Ⅰ combined with high intensity focused ultrasound(HIFU)therapy for hepatocellular carcinoma.Methods.The study included 10 cases of hepatocellular carcinoma(primary hepatic carcinoma,5 cases.Tumor recurrence of hepatocelluhr carcinoma after hepatecomy,5 cases).All the cases were treated with 125I combined with HIFU.Resultsl The operationWas successfully completed in all the cases.No severe post-operative complication occurred.CT acall found no displacement of 125Ⅰ seeds.CT 8can showed that reduced size of tmnor changed in different degree.The l month,3 month,6 month and l year survival cases were 8,7,5 and 2.During 3 to 18 months follow up,2 cases died within 1 month.Two cases survived more than 22 months.Conclusion Using 125Ⅰ combined with HIFU is safe,minimally invasive and effective for treatment of hepatocellular careinom.

OBJECTIVE:A method was established for determining the content of estriol in estriol suppositories.METHO_ DS:Using three wavelength spectrophotometry.RESULTS:The detecting wavelengths were296nm,281nm and276nm;the average recovery rate of estriol was99.2%(RSD=0.5,n=6).CONCLUSION:The method is accurate,quick and suitable for detecting estriol in intermediate material of estriol suppositories.

Objective To observe the dynamic levels of IL-2,IL-5 and IL-6 produced by Balb/ c mice infected with DEN_2 clinical strains and to study their relation.Methods The Balb/c mouse in- feetion model was established by multiple-site subcutaneous injection with various doses of DEN_2 clini- cal strain.Mouse plasma samples collected from different experiment groups at various time after in fection were tested for IL-2,IL-5 and IL-6 levels with sandwich ELISA.Results After primary in- feeted with DEN_2 B strain,the levels of IL-2,IL-5 and IL-6 of all experimental groups were not sig- nificantly higher than the normal control group while the levels of experimental groups increased sig- nificantly after re-infection.The level of IL-2 reached to peak[average value of(101 522.44?10 465.375)pg/ml]at the 4th day after re-infection(the 20th day after the primary infection),and then the level gradually reduced.The levels of IL-5 in the Balb/c mice of the group 1 and 2 reached to peak at the 1st day after re infection(the 16th day after the primary infection),and there was signifi- cant difference between these two groups and the control group(P＜0.05).The levels of IL-6 in all experimental groups reached to peak at the 1st and the 2nd day after re-infection.The peak value of the third group is the highest comparing with the normal control group(P＜0.05).Conclusion Th2 response was predominant in the second infection phase.

Aim To measure the methylation rate of bone marrow mesenchymal stem cells (BMMSCs) using ultra-performance liquid chromatography-tandem mass spectrometry, and determine the methylation rate in the process of senescence.Methods The DNA extracted from BMMSCs would be digested into individual deoxynucleosides using enzymatic hydrolysis.To quantify the global genomic DNA methylation rate,we developed a method using ultra-performance liquid chromatography-tandem mass spectrometry with multiple reaction monitoring to simultaneously measure the levels of 5-methyl deoxycytidine and deoxyguanosine in digested genomic DNA.Results The DNA methylation rate could be analyzed within two minutes after hydrolyzing 1μg DNA for an hour.The detection limit of DNA methylation rate was 5.00×10-4.The coefficient of variance of the intra-day and inter-day precision was within 7.12×10-2 and 0.119, respectively.With the subculture of BMMSCs, the methylation rate gradually decreased.The methylation rate of stem cells was the lowest in 4~6 generation, and gradually increased with the subculture.Conclusions Using this method, the preliminary data on DNA methylation of BMMSCs in the process of senescence are obtained.The method is simple and convenient for sample preprocessing, and the method is fast and accurate with good sensitivity and repeatability.

OBJECTIVE:To investigate the characteristic and regularity of antineoplastics-induced ADR,and to provide refer-ence for safety use of antineoplastics in clinic. METHODS:In retrospective study,309 cases of antineoplastics-induced ADR col-lected from a special hospital during Jan.-Dec. 2015 were summarized and analyzed statistically. RESULTS:Among 309 ADR cas-es,female (58.25％) was more than male (41.75％). The patients aged more than 40 years old occupied the highest proportion (78.64％). Main route of administration was intravenous dripping(94.82％). There were 225 cases of severe ADR(72.82％). To-tal 268 cases were improved after drug withdrawal or treatment(86.73％). A total of 24 kinds of antineoplastics were involved in 309 ADR cases;most of ADR were induced by docetaxel,followed by cisplatin,cyclophosphamide. Most common organs/system involved in ADR was hemopoietic system (64.24％),main clinical manifestation was myelosuppression. CONCLUSIONS:It is necessary to strengthen ADR monitoring,prevent,discover and treat antineoplastics-induced ADR timely,in order to reduce the harm to the patients and ensure the safety and effectiveness of drug treatment.

OBJECTIVETo determine the recognition of healthy medical students on deqi after acupuncture, reveal the qualitative and quantitative rules of deqi and understand whether these rules are the factors of the clinical application of acupuncture therapy.

METHODSThe class questionnaires were used for the investigation study on the understanding of deqi after acupuncture at Hegu (LI 4) or Zusanli (ST 36) in 86 healthy students in the clinical medicine class.

RESULTS(1) Deqi was a kind of complicated compound feelings, with many sensation qualities such as distending pain, distension and pain. (2) Deqi was a kind of mild and moderate sensations. In 10-score credit sys tem of Massachusetts General Hospital acupuncture sensation scale (MASS), the scores of distending pain (4.69 +/- 2.83), distension (4.39 +/- 2.91) and soreness and distension (3.93 +/- 2.93) were around 5 (moderate degree), the scores of stabbing pain (1.89 +/- 2.02) were around 2 (mild degree). (3) The differences in the quantitative scores were significant for stabbing pain, distending pain, distention, soreness and distention and the others before and after treatment (all P<0.05).

CONCLUSIONDeqi of acupuncture is the mild and moderate complicated sensations manifested as distension, soreness, pain and numbness. As the invasive therapy, the filiform needle puncture will bring a certain psychological impacts on the receptors. The subjective sensation is possibly the factor for the patients' selection of acupuncture treatment.

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; methods ; Adult ; China ; Female ; Humans ; Male ; Needles ; Qi ; Schools, Medical ; Sensation ; Young Adult

Objective To evaluate the impact of vagal denervation (VD) that is derived from circumferential ablation of pulmonary vein ostium for paroxysmal atrial fibrillation (AF) on the therapeutic results. Methods A total of 50 patients with paroxysmal atrial fibrillation were enrolled in this study. Circumferential ablation of pulmonary vein ostium was carried out in all the patients. The end point of ablation was pulmonary vein electricity isolation. The patients in whom VD occurred during the performance of ablation were regarded as VD- positive group (n = 19), and the remaining patients were used as VD- negative group (n = 31). The recurrence rate of AF six months after the treatment was recorded, and the results were compared between the two groups. Results The end point of ablation was successfully achieved in all the fifty cases. Six months after the ablation, the therapeutic effect of VD- positive group was significantly better than that of VD- negative group (84.21% vs 64.51%, P ≤ 0.05). Conclusion The vagal denervation effect that is derived from circumferential ablation of pulmonary vein ostium in treating AF can significantly increase the success rate of radiofrequency ablation for AF.

Objective To investigate the effect of Wushen decoction on levels of serum cardiac troponin Ⅰ (cTnI),cardiac muscle enzyme and clinical parameters in patients with sepsis heart failure,and to analyze the correlations between cTnI and myocardial enzyme level and clinical parameters.Methods Forty-two patients diagnosed as sepsis admitted to Wuhan Hospital of Traditional Chinese Medicine from March 2014 to March 2016 were enrolled,and they were divided into a Wushen decoction treatment group and a control group by principle of single blind complete randomized method,21 cases in each group.The patients in control gToup were treated by conventional western medicine,while the patients in Wushen decoction treatment group,on the basis of conventional western medicine,they were treated additionally by Wushen decoction (composed of ginseng,radix sophorae flavescentis,radix glehniae,radix adenophorae,salvia,astragalus,notoginseng radix,rosewood,etc.),one dose a day,the therapeutic course in both groups being 7 days.The changes of biochemical indicators [cTnI,creatine kinase (CK),CK isoenzyme (CK-MB)],haemodynamics parameters [cardiac index (CI),central venous pressure (CVP),extravascular lung water index (ELWI),global ejection fraction (GEF),mean arterial pressure (MAP),heart rate (HR)],treatment condition and prognostic parameters [vasoactive drug dosage index,acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score,duration of mechanical ventilation,the length of stay in intensive care unit (ICU) and total hospitalization time] were compared before and after treatment for 7 days in the two groups.The correlations between the level of cTnI on admission before treatment and CK,CK-MB,APACHE Ⅱ,vasoactive drug dosage index,duration of mechanical ventilation,the length of stay in ICU and total hospitalization time were analyzed.Results The levels of cTnI,CK,CK-MB,CVP,ELWI,HR,vasoactive drug dosage index,APACHE Ⅱ score in two groups after treatment were obviously lower than those before treatment,the levels of CI,GEF,MAP were markedly higher than those before treatment,the duration of mechanical ventilation,the length of stay in ICU and total hospitalization time were significantly shorter than those before treatment,and the changes of above indexes were more remarkable in Wushen decoction group than those in control group [cTnI (mg/L):0.94-± 0.29 vs.1.30 ± 0.67,CK (U/L):96.00 ± 24.30 vs.101.38 ± 24.55,CK-MB (U/L):31.14 ± 6.78 vs.36.48 ± 8.17,CI (mL· s-1 · m-2):64.51 ± 5.83 vs.53.34 ± 4.67,CVP (cmH2O,1 cmH2O =0.098 kPa):10.56 ± 1.84 vs.11.94--2.16,ELWI (mL/kg):8.81±1.61 vs.11.66±2.30,GEF:(33.62±3.88)％ vs.(27.14±4.55)％,MAP (mmHg,1 mmHg =0.133 kPa):84.67 ± 5.58 vs.79.52 ± 5.74,HR (bpm):87.86 ± 9.02 vs.82.95 ± 5.26,vasoactive drug dosage index:2.44 ± 0.53 vs.2.89 ± 0.68,APACHE Ⅱ score:10.66 ± 1.66 vs.14.43 ± 1.82,duration of mechanical ventilation (days):1.67 ± 2.11 vs.2.10 ± 2.26,the length of stay in ICU (days):8.86 ± 2.59 vs.10.67 ± 2.96,total hospitalization time (days):13.24 ± 4.53vs.16.76 ± 5.04,all P ＜ 0.05].On admission before treatment,the correlations between the level of cTnI and CK,APACHE Ⅱ score,vasoactive drug dosage index,duration of mechanical ventilation and the length of stay in ICU were all positive (r =0.322,0.335,0.327,0.328,0.338,P =0.038,0.030,0.030,0.034,0.029).Conclusions The elevation of cTnI level may reflect the degree of myocardial damage in patients with sepsis cardiac failure,and it can be used as an indicator to predict the prognosis of the disease;the changes of many biochemical and clinical indexes suggest that the addition of Wushen decoction might elevate the clinical efficacy for treatment of patients with sepsis heart failure.