Objective To research the reversal the effect on multidrug resistance (MDR) and the effect on Ca~(2+) concentration of HL60/HT cell by psoralen, and observe its possible mechanism. Methods The cytotoxic effect of chemotherapeutic agents was determined by MTT assay, intracellular harringtonine (HT) content was assayed by HPLC, and intracellular Ca 2+ concentration in different periods and at different time points was detected by laser confocal microscope. Results Psoralen could reduce IC_ 50 value of HT to HL60/HT cells and increase HT content in cells in different degrees at the doses of 1-20 ?mol/L. Psoralen could influence Ca 2+ concentration with negative correlation at different time points (24, 48, and 96 h) at the doses of 1-20 ?mol/L, and influence Ca 2+ concentration with negative correlation at different times (5, 10, 15, 20, and 25 min) in the doses of 10 and 20 ?mol/L. Conclusion Psoralen can reverse MDR of HL60/HT cells, its reversal mechanism is associated with influence of intracellular Ca~(2+) concentration and the increase of intracellular accumulation of HT.

Objective To investigate the therapeutic effect of acupoint selection by heavenly stems on eosinophils(EOS) in guinea pigs with asthma.Methods Forty-eight guinea pigs were randomized into four groups: group A(timely electroacupuncture at the period of the day from 3 p.m.to 5 p.m.),group B(un-timely electroacupuncture at the period of the day from 9 a.m.to 11 a.m.),group C(model group) and group D(normal control group).Asthma was induced by chicken ovalbumin in groups A,B and C.The hematoxylin-eosin(HE) staining method and terminal-deoxynucleotidyl transferase-mediated nick end labeling(TUNEL) method were applied in the pathological and quantitative observation of eosinophils(EOS) in lung slices.Results The number of EOS was increased in model group(P

Objective:To assess the preventive and therapeutic effects and primary mechanisms of Danshen injections in the treat-ment of hepatic encephalopathy ( HE) . Methods:The acute ammonia poisoning model induced by ammonium chloride was established in mice, and HE model with liver injury induced by carbon tetrachlorie and high blood ammonia induced by thioacetamide was made in rats. The time of death was detected in the first model, and the histamine levels in blood and brain, liver function and liver pathologi-cal histology changes were detected respectively in the other model. Results:In the acute ammonia poisoning experiment, the time of death in Danshen injections group was longer than that in the control group. Furthermore, Danshen injections could notably decrease the histamine levels in blood and brain, reduce the levels of ALT, AST, ALP and Tbil in serum and improve the function of liver to show the preventive and therapeutic effects on HE. Conclusion:Danshen injections exhibit promising preventive and therapeutic effects on HE, which may be related to decreasing histamine levels in blood and brain.

Objective To explore risk factors for healthcare-associated infection (HAI)in patients undergoing craniocerebral operation,and provide guidance for the prevention of HAI in patients in department of neurosurgery. Methods 200 patients who underwent craniocerebral operation in a department of neurosurgery from November 2013 to November 2014 were surveyed,risk factors for HAI were analyzed.Results Among 200 patients undergo-ing craniocerebral operation,81 patients developed 99 cases of HAI,HAI rate was 40.50%,HAI case rate was 49.50%;the top five HAI sites were lower respiratory tract,urinary tract,intracranial site,bloodstream,and in-testinal tract.Univariate analysis showed that patients’age ≥60,Glasgow Coma Scale (GCS)<15,intraoperative blood loss ≥800 mL,staying in intensive care unit(ICU),indwelling gastric tube,ventricular drainage,using ventilator,tracheotomy,and using H2 receptor antagonists were important risk factors for HAI in patients undergo-ing craniocerebral operation (all P <0.05).Multivariate logistic regression analysis showed that patients’age ≥60, GCS<15,staying in ICU,and using H2 receptor antagonists were independent risk factors for HAI in patients un-dergoing craniocerebral operation.Conclusion Strengthening the surveillance of HAI patients undergoing cranioce-rebral operation and realizing risk factors for HAI are helpful for taking comprehensive prevention measures and re-ducing the incidence of HAI.

Objective To assess the effects of p27mt gene transfection on the proliferation and apoptosis of human hepatocellular carcinoma cell (HCC) lines SMMC-7721. Methods A replication deficient adenovirus vector encoding p27mt (Ad-p27mt) was used and p27mt cDNA was transfected into human SMMC-7721 cell lines in vitro. The synthesis of DNA in SMMC-7721 cells was determined by using 3H-thymidine incorporation; the cell apoptosis was determined by flow cytometry, TUNEL method and DNA fragmentation analysis. Results The virus titer was 7.95?1012 cfu/ml, the transduction efficiency was 100 % when multiplicity of infection ≥50, FCM analysis revealed a sub-G1 cell peak in Ad-p27mt transduced hepatocellular carcinoma cell lines. Agarose electrophoresis showed marked ladder .The difference of apoptotic index between the Ad-p27mt group and the control group was statistically significant (58.6?4.3, vs 4.5?1.6, P

Objective To investigate the situation of the activities of daily living(ADL)for elderly people in Changsha,and analyze the influencing factors. Methods Questionnaire survey on ADL was held in 2239 elderly people(ranging from 60 to 91 years old),and the influencing factors including age,sex,family structure,marital status,education level,occupation,common chronic diseases and medical care consciousness were analyzed. Results Going to the toilet irregularly hadthe highest injury rate in physical self-maintenance viability(18.2%).But in instrumental ADL,the highest injury rate occurred while shopping(26.3%).Advanced age,living alone,losing spouse,sickness and the lack of medical care awareness were the major factors that influenced the ADL of the elderly people. Conclusions The ADL is an important indicator which reflects the health condition of elderly people.Advanced age,living alone,losing spouse,having many chronic diseases and lacking in medical care awareness are risk factors.

Objective:To compare the nutritional status of inpatients after enteral nutrition (EN) and parenteral nutrition (PN). Method: A multi-center survey of 1 142 inpatients from the Department of gastrointestinal surgery, thoracic surgery, gastroenterology, respiratory disease, neurology, neurosurgery and the intensive care unit of 6 general hospitals in Beijing and Shanghai was adopted in this study. Body weight (BW), haemoglobin (Hb) and serum albumin (sALB) were compared before and after EN or PN respectively. Results: BW, Hb and sALB all decreased after the nutritional support both in EN and PN groups, but only significantly in BW and sALB (BW: -1.58?2.36 kg/m2 vs -2.09?2.66 kg/m2, P

Objective To investigate the correlation between chronic hepatic diseases and small intestinal inflammation.Methods Patients who received capsule endoscopy in The First Affiliated Hospital of Guangdong Pharmaceutical University were divided into groups of liver cirrhosis,non-alcoholic fatty liver disease(NAFLD),chronic hepatitis and non-hepatic disease according to clinic data from August 2011 to August 2015.The severity of small intestinal mucosal inflammation was graded according to Lewis Scoring system and incidence of small intestinal lesions in different groups and Lewis scores were compared.The liver function was also graded with liver noninvasive scoring systems.Then the correlation between liver function damage and small intestinal lesions was investigated.Results A total of 338 cases were enrolled in the study,including 25 cases of liver cirrhosis,47 cases of NAFLD,20 cases of chronic hepaitis and 246 cases of non-hepatic disease.There were 22 (88.0％),36 (76.6％),12 (60.0％) and 78 (31.7％) cases with lesions in small intestine in the four group respectively with significant differences(P＜0.001).Rate of small intestinal villi edema was significantly higher in liver cirrhosis group,NAFLD group,chronic hepatitis group than that in non-hepatic disease group(all P＜0.017).Small intestinal villi edema was found mainly in the upper and one third of middle parts in small intestine (P =0.033).Lewis scores of liver cirrhosis group (190.80±228.42)and NAFLD group(125.38± 191.31) were higher than those of non-hepatic disease group (42.91±97.69,P=0.021,P =0.034).Forns score,FIB-4 score,NAFLD-FS score and Child-Pugh score were positively correlated with Lewis score (correlation coefficient:0.247,0.244,0.223,0.284respectively,all P＜0.001).Conclusion Chronic hepatic diseases such as liver cirrhosis,NAFLD,chronic hepatitis might be risk factors for small intestinal mucosal inflammation,and the severity of chronic hepatic diseases may be positively correlated with that of small intestinal mucosal lesions.

BACKGROUND:Caveolin-1 is expressed in mammalian brain and involved in the normal development of the brain, which can affect the proliferation of neural stem cells in the brain. OBJECTIVE:To acquire neural stem cells from caveolin-1 knockout embryonic mice in vitro and study their biological characteristics. METHODS:The whole brain was separated from C57BL/6 mice and caveolin-1 knockout C57BL/6 mice respectively at encyesis 14-16 days. Single cellsuspension was obtained by enzyme digestion, and cultured in the conditioned medium of neural stem cells. Fol owing 7 days of primary culture, the cells were induced in Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 containing 10%fetal bovine serum for 7 days. RESULTS AND CONCLUSION:The major cells of the cellsuspensions from the fetal mouse brain were dead at 1 day after culture, and some single cells floated in the medium and their transmittance were better, and then they gradual y formed multicellular bal s after 3 days. A smal amount of cells were adhered at the bottom of culture plate after passage, and a great amount of cellbal s appeared after 7 days. The proliferation rate of neural stem cells from caveolin-1 knockout mice was higher than that from normal mice. The cellbal s were nestin-positive and their differentiated cells was positive for neurofilament 200, glial fibril ary acidic protein or O4, respectively. Al of the cells from normal mouse brain were positive for caveolin-1, but the cells from caveolin-1 knockout mice were negative for caveolin-1 by immunocytochemistry. Moreover, the speed of cellbal formation and the number of cellbal s in neural stem cells from caveolin-1 knockout mice were better than those from normal mice. Caveolin-1 negative neural stem cells were cultured successful y from caveolin-1 knockout mouse brain, and the results show that caveolin-1 can promote the proliferation of neural stem cells and inhibit their differentiation in vitro.

OBJECTIVE:To provide reference for improving the quality of talent training for medical direction of chain man-agement major in higher vocational college. METHODS:The situation of pharmaceutical retail chain industry market was analyzed in China;the problems of talent training mode were summarized to put forward reform plan and measures according to disadvantag-es. RESULTS:Based on the market situation as continues expansion of pharmaceutical retail chain industry market scale,shortage of professional talent pool,the formulation of new retail mode in China,and training mode situation as not enough in-depth cooper-ation between college and enterprise,poor practicality and pertinence of course setting,irrational teachers'structure,teaching re-form could be conducted on the basis of modern apprenticeship system in following aspects,such as college and enterprise shared the responsibility of training and cultivating,student admission is recruitment;college and enterprise designed curriculum system and assessed students together;double tutorteam of college teacher and enterprise teacher was constructed. CONCLUSIONS:The talent training mode based on modern apprenticeship system is the entry point for teaching reform of medical direction of chain management major in higher vocational college,which is conducive to cultivate high quality pharmaceutical management talents meeting industry needs and social development.