Objective To observe the effect of montelukast sodium and ambroxol oral solution in treatment respiratory symptoms caused by mycoplasma infection in children.Methods 147 children who were infected by mycoplasma pneumonia with lower respiratory tracts symptom were randomly divided into A,B,C three groups:group A was control group,group B was treated by montelukast sodium,and group C was treated by montelukast sodium and ambroxol oral solution.Coughing,symptomatic relief of pant were observed in each group.Results After 7 days treatment,the total effective rate of three groups was A group 79.5％,B group 95.7％,C group 96.4％.Compared with group A,the coughing and panting time in group B and group C were significantly shorter(x2 =5.61,9.54,all P ＜0.05),The rate of coughing and panting complete remission in group C was higher compared with group B (x2 =5.39,P ＜ 0.05),but there was no statistificantly significant difference in the total efficency between the two groups.Conclusion Montelukast sodium and ambroxol oral solution can effectively improve the symptoms of respiratory tract infection caused by mycoplasma pneumoniae.

OBJECTIVE:To establish a HPLC method for the determination of chlorogenic acid and baicalin in xiaoer qingrening granula.METHODS:The determination was performed on Symmetry Shield RP C 18 ,the mobile phase of chlorogenic acid consisted of acetonitrile-0.4%phosphoric acid soluton(13∶87)and that of baicalin consisted of methanol-water-glacial acetic acid(50∶50∶1),the detection wavelengths of chlorogenic acid and baicalin were327nm and274nm,respectively,the flow rate was1.0ml/min,sample size was20?l and column temperature was25℃.RESULTS:The respective linear sample size range for chlorogenic acid and baicalin was0.1040?g～1.040?g(r=0.9998)and0.6240?g～6.240?g(r=0.9997),with average recoveries respectively at96.4%(RSD=1.4%)and98.0%(RSD=1.1%).CONCLUSIONS:The method is simple,accurate,reproducible and specific,and it can be used for the quality control of xiaoer qingrening granula.

OBJECTIVE To learn the situation of cephalosporins used in our hospital,and offer the scientific guidline base for their clinical use.METHODS Statistics methods were used to analyze dosage,sales volume and DDDS of cephalosporins during 2003-2007.RESULTS The usage of the first generation cephalosporins was reduced year by year,but the third generation of compoands cephalosporins and their oxef cephalosporins occupied the main places.The DDDs of cefoperazone/tazobactam usage ranked second for three years(2005-2007),and at the same period their DDDs consumption got top.CONCLUSIONS The situation of the usage of cephalosporins in our hospital is reasonable basically,but more attention should be payed to the usage of the third cephalosporins and their compounds and oxefs.

0.05). Conclusion Tei index may be useful, convenient and reliable in fetal cardiac function assessment.

OBJECTIVE:To study the status quo of drug use in the elder hospitalized patients(over 65 years old)and their demand for drugs.METHODS:The drugs used in the 12 614 elder hospitalized patients(over 65 years old)between July,2005 and June,2006 were statistically analyzed.RESULTS:The drugs used in elder hospitalized patients totaled 1 347 kinds,which were mainly administered orally or by injection.The consumption sum of injection accounted for 85.81% of the total.The most common diseases in the elder hospitalized patients were tumor diseases,cardiovascular and cerebrovascular diseases,and which were more often seen in males than in females.CONCLUSION:The drugs used for the elder hospitalized patients were many in kinds.The expenses of injection showed a highest proportion in the total drug costs.Cerebrovascular and cardiovascular diseases and tumor diseases are main diseases that threat health of aged people.

Objective To investigate the effects of cardiopulmonary bypass (CPB) on the expression of tight junction protein occludin in rat lung tissues.Methods Twenty adult male Sprague-Dawley rats were randomly divided into 2 groups (n=10 each): sham operation group (group S) and CPBgroup.The rats underwent 1 h of CPB and were observed 2 h later in group CPB.The lung water content,neutrophil percentage and protein concentration in bronchoalveolar lavage fluid (BALF) were measured.The expression of occludin in lung tissues was detected by immunohistochemistry and Western-blot analysis.The ultrastructure of alveolar epithelial barrier was observed with transmission electron microscope.Results Compared with group S,the lung water content,protein concentration in BALF and neutrophil percentage were significantly increased (P ＜ 0.05),the expression of occludin in lung tissues was significantly down-regulated (P ＜ 0.05) and the damage to alveolar epithelial barrier was aggravated in group CPB.Conclusion The expression of occludin in lung tissues is down-regulated and the damage to alveolar epithelial barrier is induced after CPB,which may be one of the important factors in acute lung injury induced by CPB.

Objective The purpose of this study was to assess the antibacterial effects of hematoporphyrin monomethylether-photodynamic therapy (HMME-PDT) on Enterococcus faecalis within infected simulated lateral canals in vitro with different energy.Methods Simulated lateral canals were prepared on extracted teeth.The specimens were infected with Enterococcus faecalis and then were randomly divided into eight groups.Group A was considered as negative control,its specimens were irrigated with physiological saline.Group B was the positive control,they were irrigated with 5.25％ NaClO.Other groups were incubated with HMME at concentration of 40 μg/ml for 5 min,followed by exposure to light at 532 nm for 120 s with different powers in a spiral pattern.Groups were named C-H,in corresponding with the power 50,60,70,80,90,100 mW.Microbial samples (the dentin chips from simulated lateral canals) were taken before and after the treatments.The survival fractions in each simulated lateral canal was calculated by counting colony-forming units(CFUs).Results 1.The HMME-PDT-treated groups resulted in a significant reduction in the number of E.faecalis in simulated lateral canals compared with the negative controls(P＜0.05).2.The antibacterial effects of group D、E、F、G、H were higher than the NaCl0-irrigated group(P＜0.05).3.The difference of antibacterial effects between the F、G、H groups was in significant(P＞0.05).Conclusion HMME-PDT had significant inhibitive efficacy on Enterococcus faecalis within infected simulated lateral canals and the efficacy was power-depended.It can play the best effect with the power of 80 mW.

Abstract: Neurotensin receptor-1 (NTR1), which can stimulate the intracellular cascade signal pathway, belongs to the large superfamily of G-protein coupled receptors. NTR1 is related to the occurrence and development of several kinds of diseases. In order to screen the inhibitors for the cancers associated with NTR1 protein, we established a CHO (Chinese hamster ovary) cell line in which human neurotensin receptor-1 was highly expressed. The method is to construct the recombinant plasmid which was lysed with the hNTR1 gene and transfect it into CHO cells. After selected with G418, the cell line was evaluated by Western blotting analysis and calcium flux assays. Through the calcium flux assays on FlexStation 3, we got the EC50 value of neurotensin peptide which is the natural NTR1 agonist, and the IC 50 value of SR48692 which is the known NTR1 antagonist. The established human CHO/NTR1 cell line can be used to study the profile of NTR1 biological activity and further screen of NTR1 antagonists and agonists.

Objective To investigate the effect of penehyclidine hydrochloride on brain injury induced by cardiopulmonary bypass (CPB) in rats. Methods Thirty adult male SD rats were randomly divided into 5 groups ( n = 6 each): sham operation group (group S), CPB group, and low, median and high dose penehyclidine hydrochloride groups (group PL, PM , PH). Penehyclidine hydrochloride 0.2, 0.6 and 2.0 mg/kg were added to the priming solution in group PL, PM and PH respectively, while the equal volume of normal saline was added instead in group S. Blood samples were obtained at 2 h after termination of CPB to determine the plasma concentrations of neuron specific enolase (NSE) and S-100β protein. The brain tissues were taken to observe the ultrastructure of hippocampal neurons with electron microscope. Results The concentrations of NSE and S-100β protein were significantly higher in the other groups than in group S, while lower in group PM and PH than in group CPB and PL( P＜ 0.05). The S-100β protein concentration was significantly lower in group PH than in group PM( P ＜ 0.05). The damage to hippocampal neurons was significantly attenuated in group PM and Ps. Conclusion Penehyclidine hydrochloride 0.6 or 2.0 mg/kg can reduce the CPB-induced brain injury in a dose-dependent manner in rats.

Objective To investigate the effect of probiotics preconditioning on intestinal mucosal barrier function in a rat model of cardiopulmonary bypass (CPB) . Methods Twenty-four adult male SD rats weighing 350-450 g were randomly divided into 3 groups ( n = 8 each) : group Ⅰ sham operation ( group S); group Ⅱ CPB and group Ⅲ probiotics + CPB. CPB was established between left carotid artery and right jugular vein and maintained for 60 min. Croup Ⅲ received intragastric instillation of probiotics 2 ml once a day for 7 consecutive days before CPB. Blood samples were collected at 2 h after CPB was terminated for determination of plasma D-lactate, TNF-and IL-6 concentrations and diamine oxidase (DAO) activity. Venous blood was obtained from portal vein for determination of LPS concentration and cultured. Liver, pancreas, spleen, kidney and mesenteric lymphnode (MLN) specimens were obtained under sterile condition and cultured for bacterial growth. The mucous membrane of small intestine was examined with electron microscope. Results CPB significantly increased plasma DAO activity, and D-lactate, IPS, TNF-α and IL-6 concentrations and the rate of bacteria-positive culture of portal venous blood, liver, MLN, lung and kidney in group Ⅱ as compared with group S. Probiotics preconditioning significantly attenuated the above-mentioned CPB-induced changes. Microscopic examination showed that probiotics preconditioning significantly ameliorated CPB-induced damage to the epithelium of the small intestine. Conclusion Probiotics preconditioning can significantly attenuate CPB-induced inflammatory response and protect the intestinal mucosal barrier function.