Objective To investigate the changes of alveolar epithelial permeability and the capacity of alveolar epithelium to remove alveolar fluid in the rat models of acute lung injury induced by oleic acid.Methods A total of 35 Wistar rats were randomly assigned to the control group(n=7),and the injured group(n=28) in which the lung injury was induced by intravenous injection of oleic acid at the dose of 0.25 ml/kg.The alveolar liquid clearance rate(ALCR),total lung water content(TLW),extravascular lung water content(EVLW) and alveolar epithelial permeability(AEP) were examined in 3,6,12,24 h after injury(n=7 at each time point).Results After lung injury,there was continuous increase of AEP,TLW and EVLW,as well as progressive reduction of ALCR.On 24 h after injury when all changes were most significant,AEP was increased by 68.7%,ALCR was reduced by 49.4%,TLW and EVLW increased by 44.6% and 92.0% respectively,as compared with control group.Conclusion The alveolar epithelial barrier might play a role in the pathogenesis of pulmonary edema in acute lung injury.

Objective It has been shown that fluorinated inhalational anesthetics have various adverse effects on the lungs. The aim of this study was to investigate the effects of different concentrations of isoflurane (ISO) on the lungs in rats.Methods Ninety Wistar rats of both sexes weighing 140-200 g were randomly divided into two groups : (A) control group received only oxygen inhalation ( n = 30) and (B) isoflurane group (n = 60) which was farther divided into 2 subgroups (n = 30):0.6% and 1.4% isoflurane. In each subgroup isoflurane was inhaled for 2 h ( n = 10), 4h (n = 10) or 8 h ( n = 10) . The animals were placed in a glass container and isoflurane was delivered from ISO vaporizer into the container through the inlet. The end-tidal ISO concentration was checked at the outlet. The animals were sacrificed at the end of ISO inhalation. The lungs were immediately removed and blood was collected for determination of (1) lung water content, (2) protein content and neutrophil ratio in broncho-alveolar lavage fluid (BALF) , (3) serum and BALF surfactant protein-A (SP-A) content and (4) microscopic examination. Results There was no significant difference in all variables between control group and 0.6% ISO subgroup. Exposure to 1.4% ISO for 8 h caused an increase in neutrophil ratio and protein content in BALF, and serum SP-A content but a decrease in BALF SP-A content. There was no significant difference in lung water content between control group and 1.4% ISO (8 h) subgroup. Conclusion Isoflurane (1 MAC) inhalation over 8 h may impair the function of alveolar epithelium.

Objective To explore the change of alveolar epithelial liquid clearance capacity in lung edema following acute lung injury induced by oleic acid.Methods Forty-eight Wistar rats were randomly divided into 6 groups: the control(C), injury(I), amiloride(A), ouabain(O),amiloride plus ouabain(AO), and terbutaline(T) groups. Acute lung injury was induced with intravenous oleic acid 0.25 mlkg -1. 24h after injury, 5% albumin solution (5 ml?kg -1) was delivered into both lungs via the trachea in C and I groups. In A, O, AO and T groups, amiloride (2?10 -3 mol/L),ouabain (5?10 -4 mol/L), amiloride (2?10 -3mol/L) and ouabain (5?10 -4 mol/L)mixture and terbutaline(10 -4 mol/L),added respectively to the albumine solution,at 5ml.kg -1 were administered intratracheally to both lungs separately. One hour later, the alveolar liquid clearance rate(ALC), total lung water content(TLW), extravascular lung water content(EVLW) and arterial blood gases were measured.Results As compared with those in C group, severe hypoxemia, hypercapnia and acidosis appeared, ALC was reduced by 49.2% ,TLW and EVLW markedly increased in I group(P

With the change in the modes of medicine, the traditional educational mode of clinical medicine is unable to meet the development demands of modern medicine. Evidence based medicine, a new mode of medical treatment, reflects the development trends of modern medicine and represents the direction of modern medical advancement. Judging from the perspective of medical education, evidence based medicine is a learning method which differs from the traditional educational mode and represents a new concept of education in clinical medicine. The rise of evidence based medicine demonstrates the direction of reform in medical education in the world today and will also bring about great changes in the mode of medical education in China. It is imperative for us to follow the trend in clinical medical education, update concepts on medical education in line with the basic ideas of evidence based medicine, and push forward reform in the mode of medical education.

Object To establish an analysis method for determ in ation of irone in Iris tectorum Maxim. f. alba Makino. Methods The three isomers of irone were quantitatively analyz ed by GC-MS. Irone in I. tectorum extract was determinated by GC. Results The three isomers of irone, ?, ?, ?- irone were s p eculated according to the MS splitting decomposition law. Irone contents in the extract were 687, 238 ?g/g (n=6), which h ad much difference. Conclusion The analysis method for irone by GC-MS and GC is hig her efficiency, precise, and the analysis time is acceptable.

AIM To study the effect of ketamine on proliferation,cell cycle in the cultured rat neural stem cells. METHODS The growth inhibition of ketamine on neural stem cell was evaluated by an MTT assay. The effect of ketamine on cell cycle was measured by flow cytometry. RESULTS Ketamine inhibited the growth of cultured rat neural stem cells. Flow cytometry analysis showed that G 0/G 1 phase rate was increased but S phase rate was decreased. CONCLUSION Ketamine can inhibit proliferation of cultured rat neural stem cells,and this inhibitition is associated with cell cycle block.

AIM: To establish the method for quality control of Guli Granules(Herba Epimedii,Radix Puerariae Lobatae,Rhizoma Curcumae Longae,Radix Achyranthis Bidentatae,Fructus Psoraleae,etc.). METHODS: Radix Puerariae,Rhizoma Curcumae Longae,Radix Achyranthis Bidentatae and Fructus Psoraleae in this medicine were identified by TLC.The icarrin content in this medicine was determined by HPLC.The acetonitril-water(28∶72) solution was used as the mobile phase,the column was C_(18),the flow rate was 1.0 mL?min~(-1).The detection wavelength was at 270 nm. RESULTS: These herbs could be identified by TLC.For Icarrin,the linear range was from 17 to 85 ?g?mL~(-1),and the average recovery was 98.32% with RSD of 1.67%. CONCLUSION: The method is simple,reliable,accurate and can be applied to the quality control of the preparation.

Objective To study and observe the change of nerve function and erythrocyte immune indexes of patients with severe craniocerebral injury during the perioperative period.Methods Forty patients with severe craniocerebral injury treated with surgery in our hospital from July 2013 to August 2015 were selected as the observation group and 40 healthy persons with the same ages in the same period were selected as the control group.The nerve function related indexes and erythrocyte immune indexes of observation group before and at first,third,fifth,seventh,tenth and fourteenth day after the surgery and those of control group were compared.Results The serum nerve function related indexes of observation group before and at first,third,fifth,seventh,tenth and fourteenth day after the surgery were higher than those of control group.The erythrocyte immune indexes of observation group before and at first,third,fifth,seventh and tenth day after the surgery were worse than those of control group.The erythrocyte immune indexes at fifth and seventh day after the surgery were worse than those before and at first,third,third,tenth and fourteenth day after the surgery.The differences of comparison indexes were all significant (P＜0.05).Conclusion The change of nerve function and erythrocyte immune indexes of patients with severe craniocerebral injury during the perioperative period are obvious.Those indexes should be paid with enough monitoring and intervention.

Adult ; Arteries ; anatomy & histology ; Asian Continental Ancestry Group ; Female ; Humans ; Larynx ; anatomy & histology ; blood supply ; Male ; Microsurgery

Objective To discuss the blockage reasons and countermeasures of temporary catheter in central venous including femoral vein and internal jugular vein for hemodialysis patients.Methods The reasons of blockage of temporary catheter in central venous among 60 hemodialysis patients from January 2014 to September 2015 in Hemodialysis Room of the First People's Hospital of Longquanyi district of Chengdu were reviewed.There were 32 cases in femoral vein and 28 cases in the right internal jugular vein.The incidence of blockage of the two temporary catheter in the first two weeks,the incidence of blockage caused by mechanical factors and blood clots or fibrous sheath and the incidence of blockage which needed to change the catheter in the two groups patients within the first two months were analyzed.Results The first rate of defective function in the first two weeks of femoral vein group was 53.13％(17/32),and 7.14％(2/28) of the right internal jugular vein group,there were significant difference between the two groups (x2=13.061,P＜0.001).The incidence of catheter blockage due to mechanical factors of femoral vein group was 96.88％ (31/32),and 53.57％ (15/28) of the right internal jugular vein,there were significant difference between the two groups (x2 =15.654,P＜0.001).The incidence of blockage caused by blood clots or fibrous sheath and the incidence of blockage which needed to change the catheter in the first two months were no significant differences between the two groups(P=0.061,0.096).Conclusion The cases of temporary catheter in femoral vein have blockage earlier,and they have a higher risk of catheter jam than the cases of temporary catheter in right internal jugular vein.