Objective To investigate the chemical constituents of Polygala fallax.Methods The chemical constituents were isolated and purified via silica gel and Sephadex LH-20 column chromatography as well as recrystallization.Their structures were determined on the basis of spectral analysis and physicochemical properties.Results Six compounds were isolated and identified as 3-O?-D-glucopyranosyl senegenic acid(Ⅰ),tenuifolin(Ⅱ),presenegenin(Ⅲ),1,7-dimethoxy-2,3-methylenedioxy xanthone(Ⅳ),sinapinic acid(Ⅴ),ferulic acid(Ⅵ).Conclusion Compounds Ⅲ—Ⅵ are isolated from P.fallax for the first time.Compound Ⅰ is a new triterpenoid saponin,named fallaxsaponin A.

Objective To determine the aromatase protein expression in A549 cell and to investigate the effects of 17? estrogen (E 2), testosterone (T), estrogen receptor antagonist tamoxifen (TAM), and aromatase inhibitor DL aminoglutethimide (AMIN) on the growth and proliferation of A549 cells. Methods The expression of aromatase protein was determined by immunohistochemical methods. The changes of cell cycle and cell number before and after treatment with E 2, T, TAM, and AMIN were measured by flow cytometry and tetrazolium method (MTT). Results The aromatase protein was positively expressed in A549 cells. The aromatase inhibitor AMIN and 5?10 -7 mol/L TAM could inhibit the growth of A549 cells and block them in G 0/G 1 phase ( P

Objective To evaluate the clinical value of adriamycin injection via the foramen ovale and around peripheral trigeminal branches under the guidance of X-ray for treatment of primary trigeminal neuralgia by comparison with the three-dimensional computed tomography (CT).Methods A total of 91 patients with primary trigeminal neuralgia of both sexes,aged 33-76 yr,with the course of disease 6 months-24 yr,with visual analogue scale score of 6-9,were divided into 2 groups using a random number table:X-ray group (n =43) and CT group (n =48).Hartel anterior approach was used to puncture the foramen ovale in 2 groups.One point five percent adriamycin 0.2,0.3 and 0.5 ml were injected via the supraorbital foramen,infraorbital foramen and oval foramen.When pain relief was poor (visual analogue scalc scorc≥ 4) within 1 yr after treatment,oxcarbazepine and adjuncts (tramadol,flupentixol and melitracen tablets,etc.) were taken orally.The requirement for oxcarbazepine and adjuncts was recorded during 1 day-1 week,1 week-1 month,1-3 months,3-6 months and 6 months-1 yr after treatment periods.The operation time,the nuinber of puncture,and developinent and recurrence of complications during treatment and within 1 yr after treatment were recorded.Results Compared with CT group,the number of puncture and incidence of facial hematoma during treatment were significantly increased (P ＜ 0.05 or 0.01),and no significant change was found in the operation time,requirement for oxcarbazepine and adjuncts,incidence of dizziness,nausea and vomiting during treatment,or the incidence and recurrence rate of masticatory muscle weakness and facial numbness after treatment in X-ray group (P＞0.05).Conclusion Compared with the three dimensional CT,X-ray provides similar efficacy and safety when used to guide adriamycin injection via the foramen ovale and around peripheral trigeminal branches for treatment of primary trigeminal neuralgia,showing that X-ray guidance has significant clinical value.

Objective To obtain methamphetamine concentration profiles in saliva and urine samples of drug addicts and to screen the colloidal gold strip. Methods Methamphetamine concentration in saliva and urine samples of drug addicts was determined by liquid chromatography tandem mass spectrometry. The initial screening was obtained by colloidal gold strip test. The results were compared and analyzed. Results using the method of protein and fluid MRM scan method to detect direct precipitation, saliva is linear in the range of 1~100ng/mL, the linear correlation coefficient is 0.9987, the detection limit is 0.1ng/mL, the limit of quantification was 1ng/mL, the urine is linear in the range of 1~100ng/mL, the linear correlation coefficient is 0.9943, the detection limit is 0.5ng/mL, the limit of quantification was 1ng/mL. Saliva and urine samples diluted, the concentration in the linear range. Saliva and urine samples of four types of methamphetamine colloidal gold reagent strip were screened directly, and the results were judged visually. Conclusion the detection rate of colloidal gold strip is about 79%, the detection rate of saliva is about 81%, and the detection rate can be increased to more than 93% by using two reagent strips. Combined with the initial screening results and the instrument confirmation concentration, it can be found that the gray zone setting and sensitivity setting have certain influence on the detection rate, and it is suggested to improve the sensitivity to meet the needs of screening.