Objective To explore the relationship between smoking, alcohol drinking and gallstone disease in general male population in Guangdong. Methods Each subject received a questionnaire and took an upper abdominal ultrasound examination in a cross-sectional study. Results The prevalence of gallstone disease became higher with the increase of amount of cigarette smoking per day (trend test ?2=5.542, P=0.019) and with the total amount of cigarette smoking in their life (trend test ?2=7.302, P=0.007), these significance remained after controlling well-known risk factors for gallstone disease such as age and body mass index (BMI) (OR=1.269,95%CI: 1.018~1.580 for cigarette smoking per day and OR=1.295, 95%CI: 1.020~1.646 for total ). Little to moderate alcohol drinking (

Objective To investigate the water source contamination in Jiangsu Province. Methods Using blowing and arresting device and GC-MS, 90 water samples collected from 15 city drinking water sources in Jiangsu Province were analyzed. Results The main detected compounds were 1, 2-dichloroethane, chloroform, benzene, trichloroethene, toluene, tetrachloroethene, chlorobenzene, m-xylene, p-xylene, o-xylene, 1, 4-dichlorobenzene, 1, 2-dichlorobenzene, 1, 2, 4-trichlorobenzene and hexachlorobutadiene, while 1, 1-dichloroethene, trans-1, 2-dichloroethene, cis-1, 2-dichloroethene, 1, 1, 1-trichloroethane, carbon tetrachloride, bromodichloromethane, dibromochloromethane, bromoform, isopropylbenzene, 1, 2, 3-trichlorobenzene and styrene were not found. The highest concentration of 1, 2-dichloroethane was 27.79 ?g/L, which was close to the limit of surface water. It should be noticed that the detected concentrations of chlorobenzene in water source of district 3 and water source of district 4 were a little higher. Compared with the others, in water source of district 1, water source of district 9 and water source district of 14 a higher concentration of toluene and xylene were detected and the concentration of benzene in water source of district 1, water source of district 2, water source of district 3 and water source district 4 was higher. Only in water source of district 13, none of 25 volatile organic compounds was detected. Conclusion Some drinking water sources have been contaminated by volatile organic compounds in Jiangsu Province.

Objective To study the leukocyte adhesion molecules in the pathogrnesis of ALI and ARDS.Methods The positive expression rates of CD11a、CD11b and CD18 in peripheral blood were quantitatively analyzed by flow cytometry using monoclonal antibodies in 26 cases of ALI,18cases of ARDS and 15 healthy controls.Results The expression rates of CD11a、CD11b and CD18 in polymorphonuclear neutrophils and monocytes from the ALI group and ARDS group were much higher than those in the control group(P

A novel method was developed for the determination of the 15+1 European priority polycyclic aromatic hydrocarbons in edible oil by online solid-phase extraction coupled with high performance liquid chromatography-ultraviolet/ fluorescence detection ( online-SPE-HPLC-UV/FL-D ) . The edible oil samples were diluted with isopropyl alcohol, and then filtered. The online extraction was performed on a solid phase extraction ChromSpher Pi column (80 mmí3 mm) and the separation was carried out on a C18 reversed-phase PAH column (250 mmí4. 6 mm i. d, 5μm) using ultraviolet detection at 220 nm and fluorescence detection. Isopropyl alcohol, acetonitrile and water were served as mobile phase in gradient elution. The results showed good linearity for the 15+1 polycyclic aromatic hydrocarbons with all the correlation coefficients (R2)>0. 99. The limits of detection ( LODs ) were between 0. 03 and 12. 23 μg/kg. The recoveries of the sixteen components in the three levels of spiked samples were in the range of 65 . 3%-110 . 5% with the relative standard deviation (RSD, n=6) from 0. 1% to 9. 8%.

OBJECTIVE:To optimize the preparation technology of Angelica sinensis powder and conduct screening for the op-timal particle size thereof. METHODS:With the contents of volatile oil and ferulic acid as the indexes,screening was conducted for the optimal drying temperature,dry welding time and particle size of the crude drug A. sinensis,and the stabilities of the A. si-nensis powder with different particle sizes which was packed by simulating that sold in the market were investigated. The verifica-tion tests on the preparation technology were conducted. RESULTS:The optimal conditions for preparing the crude drug A. sinensis were as follows as drying temperature of 60-70℃,drying for 4.5-5 hours and being crushed into moderate-sized powder;the stabil-ity of the moderate-sized powder which was packed by simulating that sold in the market was the best. In the verification tests on the preparation technology,the average content of the volatile oil was 0.46 ml/g,with RSD of 0.034%(n=3);the average con-tent of the ferulic acid was 0.123 μg/ml,with RSD of 0.026%(n=3). CONCLUSIONS:The optimized technology is stable and feasible,and the stability of the moderate-sized A. sinensis powder is the best.

0.05),but the contraction of the bronchial rings caused by histamine,potassium chloride,intracellular Ca2+ release and extracellular Ca2+ influx was signifi cantly inhibited by Shenmai injection(compare with those of control,P

AIM:To study the effects of colquhounia root tablet on the expression of adhesion molecule in acute lung injury of rats. METHODS: The rats were divided into 3 groups: ALI group, colquhounia root tablet+ALI group and control group . ALI animal model was performed by treatment with oleic acid. The positive expression rates of CD11a, CD11b and CD18 in polymorphonuclear neutrophils and monocytes were analyzed by flow cytometry. ICAM-1 expression in lung tissue was determined by immunohistochemistry, histopathological examination and biological markers were measured from lung specimens.RESULTS: Colquhounia root tablet decreased the expression of CD11a, CD11b and CD18 in polymorphonuclear neutrophils and monocytes, and ICAM-1 in lung tissue (P

A method based on HPLC-ICP-MS was established to separate the reaction products of ( ethylenediamine) palladium(Ⅱ) chloride([Pd ( en ) Cl2])and 5’-deoxyguanylic acid ( 5’-dGMP). Two reaction products were detected at pH 8. 0 with 25 mmol/L phosphate buffer solution as chromatography eluent. One was the main product with HPLC retention time of 2. 8 min, the other product’s retention time was 3.2 min. According to ESI-MS(MS/MS) study, m/z=510, 511, 512, 514, 516[M+1]+ parent ions ( abundances same to palladium isotopes) were detected. Further analysis showed that the main product was[Pd( en) ( N1-5’-dGMP) ]. However the other product was hardly to be detected by ESI-MS. By using HPLC-DAD and HPLC-ICP-MS, we found that the two reaction products had the same UV absorption spectra and palladium percentage content. Combined with other groups’research, the other reaction product was deduced as dimmer, trimer or tetramer form of[Pd( en) ( N1-5’-dGMP) ]. Further study revealed that[Pd( en) ( N1-5’-dGMP) ] was easily formed in acid solution while its polymer form was generated in alkaline solution. At pH 6. 0, [Pd(en)(N1-5’-dGMP)] was formed within 12 hours with good stability. Research also revealed that the total amount of two reaction products declined as reaction pH climbed.

A method for the simultaneous determination of 34 pesticides in sunflower oil, soybean oil and corn oil was developed. The samples were extracted and purified by a modified QuEChERS method, and then the supernatant was analyzed by on-line gel permeation chromatography-gas chromatography-mass spectrometry ( GPC-GC-MS ) . The linear range was from 0 . 01 to 0 . 2 mg/L with a good correlation coefficients ( r≥0. 9913). The average recoveries of 31 pesticides (except p,p′-DDE, p,p′-DDD, p,p′-DDT. For detail, please reference to section 3 . 6 ) ranged from 70 . 3% to 115 . 4%, 69 . 5% to 112 . 6% and 70 . 2% to 116 . 1%spiked at 0. 05 μg/g and 0. 1 μg/g with the relative standard deviations (RSDs, n=6) less than 13. 3%, 13. 5% and 12. 1% in sunflower oil, soybean oil and corn oil samples, respectively. The LODs of this method ranged from 0. 0692 to 2. 28, 0. 0559 to 2. 01 and 0. 0584 to 2. 14μg/kg (S/N=3) in sunflower oil, soybean oil and corn oil samples respectively. The convenient operation and versatility of this method are suitable for the fast screening and detection of 34 pesticide residues in sunflower oil, soybean oil and corn oil.