OBJECTIVE: To investigate the mechanism of in situ intestinal absorption of mangiferin in rats.METHODS: The in situ intestinal perfusion model was employed.HPLC/UV was developed to determine the concentration of mangiferin in intestinal circulated fluid.The effects of mangiferin concentration,bile and absorption site on the absorption parameters were studied.RESULTS:The mangiferin at a concentration from 5.0 to 25.0 ?g?mL-1 had no influence on the intestinal absorption kinetics(Ka) but it did at a concentration below 12.5 ?g?mL-1 in biliary duct-ligated rats.The absorption rate constants(Ka) in descending order were 0.164 h-1(ileum),0.132 h-1(jejunum),0.125 h-1(colon) and 0.107 h-1(duodenum),respectively.CONCLUSION: The absorption of mangiferin is in line with first-order kinetics with passive diffusion absorption mechanism.Mangiferin is well absorbed at all segments of intestine in rats,and bile is conducive to the increase of the permeability coefficient of Mangiferin in intestine.

Objective To explore the effect of montelukast combined with budesonide for treating acute bronchial asthma, pulmonary function improvement and to provide the basis for clinical treatment.Methods 192 patients with acute asthma were selected.They were divided into the control group and the observation group according to the admission order and odd and even numbers randomly, 96 patients in each group.The control group was treated with budesonide based on routine treatment, and the observation group was given budesonide formoterol based on the control group.The clinical effect, pulmonary function (forced expiratory volume in one second (FEV1),FEV1/forced vital capacity (FVC) and peak expiratory flow (PEF) the percentage of predicted value index percentage were observed.The daytime and night asthma symptoms and airway reactivity score: early respiratory resistance (Rrsc) and response threshold (Dmin) were assessed.Results The cough disappeared, shortness of breath, wheezing relieving, moist rales disappeared and wheeze disappeared time of the observation group after treatment were (5.92±1.03)d,(3.48±0.71)d,(3.74±0.69)d,(5.32±0.96)d and (5.12±0.77)d, which were lower than those of the control group (t=9.31,7.26,8.11,9.02,8.31,all P<0.05).The daytime and nighttime asthma symptom scores of the observation group after treatment were (0.54±0.31)points and (0.62±0.29)points, which were lower than those of the control group (t=7.90,7.33,all P<0.05).Rrsc score of the observation group after treatment was (2.20±0.56)points, which was lower than that of the control group (t=7.86,P<0.05).The Dmin score of the observation group after treatment was (8.33±0.81)points, which was higher than that of the control group (t=9.15,P<0.05).FEV1,FEV1/FVC and PEF of the two groups after treatment were significantly higher than those before treatment(all P<0.05).FEV1,FEV1/FVC and PEF of the observation group after treatment were (2.95±0.58)L,(71.91±0.69) and (96.45±6.11), which were higher than those of the control group after treatment (t=7.60,9.45,10.21,all P<0.05).Conclusion Montelukast combined with budesonide formoterol in the treatment of acute attack of bronchial asthma has better effect, could significantly reduce the symptoms of asthma patients and shorten the treatment time with synergistic effect, and improve the pulmonary ventilation function of the patients.

Adult ; Death, Sudden ; Humans ; Male ; Middle Aged ; Trichloroethylene ; poisoning

China ; Diagnosis, Differential ; Humans ; Medicine, Chinese Traditional ; Meridians ; Phytotherapy ; Taiwan ; Yin-Yang

Objective To report the method and effect of treating cholepathia under laparoscopy and endoscopy. Methods Laparoscopy, duodenoscopy and choledochoscopy in combination were used in treating 1 990 cases of cholepathy and the results were analyzed. Results Laparoscopy and duodenoscopy in combination were used in 1 350 cases of cholecystolilhiasis and choledocholith with cure rate ( 93. 6% ) ; laparoscopy and choledochoscopy in combination were used in 332 cases of choledocholith with cure rate (100% ) ; laparoscopy, duodenoscopy and choledochoscopy in combination were used in 258 cases of choledocholith (29 cases with pancreatitis) and 24 cases of Mirizzi syndrome with cure rate( 100% ). There was no serious complications happened. Followed up 1 051 patients from 3 months to 12 years (average 7.8 years) , 10 cases have recurrence of stones. There was no long-term complication such as stenosis of bile duct, etc occurred. Conclusion The procedure had minor trauma, mild suffering, and less operative complications compared with the traditional laparotomy.

Objective:To establish the analysis method for the determination of Ni, Cu and Zn in aluminum food packaging mate-rials by inductively coupled plasma atomic emission spectrometry ( ICP-AES) . Methods: A small amount of EDTA was added to the test solution till the concentration at 0. 010 0 mol·L-1 and the pH value was adjusted to 5. 0. Strong acid cation exchange fibers were used for the assisted extraction of Al3+ with ultrasonic. Al3+ could not quickly form a complex anion with EDTA, so it was adsorbed by the strong acid cation exchange fibers. Cu2+, Ni2+ and Zn2+ could form complex anions with EDTA rapidly, so they could not be ad-sorbed by the strong acid cation exchange fibers and were left in the solution to be determined. Results:After the separation, the con-tents of Cu, Ni and Zn were not lost, and the content of residual aluminum was about 170 times of that of Cu, Ni and Zn, which had not interferece with the determination of Cu, Ni and Zn. The sample standard addition recovery was within the range of 98. 3%-104%with RSD of 0. 2%-2. 5%(n=5). The relative errors between the measured values and the certified values of standard substances were less than 5. 0%. Conclusion:The proposed method can be successfully applied in the separation and determination of Cu, Ni and Zn in aluminum cans, barbecue aluminum foil and standard substances.

There has been great interest in NiTi alloy in medical domain si nc e Buehler found its memory effect in 1963. In the recent 30 years, a lot of basi c and clinical researches of the alloy have been reported in the world. From the biomechanical viewpoint, the ossification and resorption of bone are related to the stress. Different stresses are required in the different kinds of fracture healing. Many measurements have been used to test the biomechanical properties o f the Nitinol orthopedic instruments. The clinical applications of the instrumen ts in hand surgery started in China in 1980's and resulted in satisfactory outco mes. This article summarizes the progress made in the basic researches of the ni tinol orthopedic instruments and their clinical applications in hand surgery.

In this article,anti-doping techniques including sample preparation,isolation and analysis,were reviewed.On-line solid-phase extraction with column-switching technique and High through rapid analysis were also discussed.

?Objective:To study the toxicity of 250 g/L potassium oxalate solution.Methods:Acute toxicity test and acute skin stimulation test were carried out on Kunmin mice and rabbits.Results:Potassium oxalate solution at 250 g/L did not result in death of the mice even it had been administered at the dose of 10 000 mg/kg by stomach filling.The LD 50 was more than 5 475 mg/kg.The solution did not cause skin reaction in rabbits after application.Conclusion:250 g/L potassium oxalate solution is not toxic and not stimulative as a local applied drug.

Objective To evaluate the secular trend of lung cancer mortality rate during 1981 to 2005 in Kunshan City. Methods The population-based registration data collected during the period of 1981—2005 were used to calculate the crude rate (CR), world age-standardized rate (WASR), five-year age-specific rate, truncated rate of those aged 35~64, cumulative rates of those aged 0~74, percent change (PC), and annual percent change (APC). The mortality rates by age, period/age, and cohort / age were analyzed and compared. Results The CR was 27. 88 per 100 000 on average, and was 43.19 per 100 000 for males and 12.56 per 100 000 for females, with a sex ratio of 3. 43: 1. The WASR was 22.52 per 100 000 on average, and 37.28 per 100 000 for males and 9.67 per 100 000 for the females. The truncated rate and cumulative rate of those aged 0~74 were 31.54 per 100 000 and 0.10% respectively. The PC and the APC were 144.56% and 4.08% for the crude mortality rate, and 23.57% and 1.01% for the age-standardized rate. Birth cohort and period data analysis showed rising of lung cancer of age-specific rate. Conclusion The mortality data demonstrated a rising trend in general in the period of 1981—2005 in Kunshan.