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.

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

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

Objective:To assess the repeatability ( intraobserver comparison ) and reproducibility ( inter-observer comparison) of two different methods for establishing the occlusal plane on digital dental models. Methods:With Angle’ s classification as a stratification factor,48 cases were randomly extracted from 806 ones which had integrated clinical data and had their orthodontic treatment from July 2004 to August 2008 in Department of Orthodontics,Peking University School and Hospital of Stomatology. Post-treatment plas-ter casts of 48 cases were scanned by Roland LPX-1200 3 D laser scanner to generate geometry data as re-search subjects. In a locally developed software package,one observer repeated 5 times at intervals of at least one week to localize prescriptive landmarks on each digital model to establish a group of functional occlusal planes and a group of anatomic occlusal planes, while 6 observers established two other groups of functional and anatomic occlusal planes independently. Standard deviations of dihedral angles of each group on each model were calculated and compared between the related groups. The models with the five largest standard deviations of each group were studied to explore possible factors that might influence the identification of the landmarks on the digital models. Results:Significant difference of intraobserver varia-bility was not detected between the functional occlusal plane and the anatomic occlusal plane ( P>0 . 1 ) , while that of interobserver variability was detected ( P<0 . 001 ) . The pooled experimental standard devia-tion the 6 observers established for the functional occlusal plane was 0 . 2 ° smaller than that of the anato-mic occlusal plane. The functional occlusal plane’ s variability of intraobserver and interobsever did not differ significantly (P>0. 1),while the anatomic occlusal plane’s variability of the intraobserver was sig-nificantly smaller than that of the interobserver (P<0. 001),with a 0. 12° difference value of the pooled experimental standard deviation. Conclusion: When one observer measures a number of digital models, both the functional and the anatomic occlusal planes are suitable as a conference plane with equal repeatability. When several observers measure a large number of digital models,the functional occlusal plane is more reproducible than the anatomic occlusal plane,but the difference is small.

The outbreaks of Zika virus infection in different regions of the world underscore the potential for the virus to spread further in the Americas and beyond.Zika is a mosquito-borneFlavivirusand is transmitted by Aedes spp. mosquitoes.It is has been reported recently that Zika virus intrauterine infection causes fetal brain abnormality and microcephaly, and WHO encourages pregnant women in countries at risk MUST protecting themselves from mosquito bites. Until now, there is no imported case in China.We have established resource and technology storage to reply to the potentialZika cases in the future, therefore, people do not need to panic in China.

Objective To investigate the condition of self-management of patient controlled analgesia pump in patients in the ICU.Methods 82 patients in ICU were selected in July 2014 and were randomly divided into the observation group and the control group with 41 cases in each.In the observation group,the PCAP was fixed on the bedrails of patients' bed and controlled by themselves to acquire satisfactory analgesia effect.In the control group,the PCAP was operated by the nurses.Pains scores was compared between the two groups.Results The different position of PCAP showed the different scores of pain in the patients.The pain scores in the observation group (2.93±1.47) was significantly lower than that in the control group (3.76±1.36),P＜0.05.Conclusions Proper position of PCAP and controlled by patients can effectively reduce postoperative pain of patients in the ICU,and then reduce their suffering and improve their comfort.

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.

Animal model plays an important role in prevention and control of infectious disease, which could link basic research in laboratory with clinical diagnosis and treatment for human patients.Mouse is the most widely used animal model of infectious disease, however, adult immunocompetent mice are resistant to some pathogens.The highly genetically diverse Collaborative Cross (CC) mice could recapitulate many of the genetic characteristics of an outbred population, such as humans.Based on this, this review will focus on the application and research progress of CC mice in infectious disease (including viruses, bacteria, fungi etc.), which could provide useful reference data for expansion of animal model resource bank, and implement of precision medicine of major and new emerging infectious diseases.We hope this review could serve as a modest spur to induce other researchers to come forward with their valuable contributions.

Six cases of T-cell lyrnphoma associated with reactive histiocytic hyperplasia with hemophagocytosis (HHH) localized primarily to the skin and subcutaneous fat were described. Initial biopsy findings may he misinterpreted as benign panniculitis. Four of which were progressive, recurrent, even fatal (follow-up for 8-36 months). Histologically the lesions of all cases were composed of a mixture of small and medium sized atypical lymphoid cells and benign hemophagocytes infiltrated with neutrophils and eosinophils between fat cells. The mechanism and differential diagnosis of the disease were discussed.