Objective To study the application of ABCD3-I score in predicting the risk of early is-chemic stoke after transient ischemic attack (TIA) .Methods One hundred and eighty-two carotid TIA patients were divided into low risk group (n=40) ,moderate risk group (n=74)and high risk group (n=68) according to their ABCD2 ,ABCD3 and ABCD3-I scores .The incidence of ischemic stroke was observed within 7 days after TIA .Results The area under the ROC curve for ischemic stroke within 7 days after TIA was 0 .625 ,0 .713 and 0 .831 ,respectively .Twenty-seven patients (14 .8% ) developed ischemic stroke within 7 days after TIA .The incidence of ischemic stroke was significantly higher in moderate and high risk groups than in low risk group and in high risk group than in moderate risk group (6 .8% vs 0% ,32 .4% vs 0% ,32 .4% vs 6 .8% ,P< 0 .01) .The ABCD3-I socre was positively related with the incidence of ischemic stroke within 7 days after TIA (r=0 .486 ,P<0 .01) ,suggesting that ABCD3-I socre could significantly affect the incidence of ischemic stroke within 7 days after TIA (P<0 .05) .Conclusion ABCD3-I score can effectively predict the risk of early ischemic stroke after TIA ,and can thus be used in assessment and treat-ment of T IA .

The changes of hepatocyte and skeletal muscle membrane potential.the membrane fluidity of microsomes,microviscosity.and the order coefficient of the arrangement of membrane lipid molecules were determined in rats after their cecum was ligated and punctured to induce septic shock.Lipid peroxides of plasma and the liver,phospholipase A2 and salivary acid were determined as well.It was found that both in the first 10 hours and the next 20 hours of septic shock,the resting membrane potential of hepatocytes and skeletal muscles was significantly suppressed as compared with that of the sham-operated rats.The membrane potential of hepatocytes was suppressed prior to the decrease of blood pressure and much earlier and much more severe than that of skelatal muscles.Lipid peroxides of the liver were increased by 1.6 fold(P

Objective To observe the expression of aquaporin-1(AQP1)in rats with acute lung injury induced by radiation,and discuss the protection of Tanreqing for rats with acute lung injury.Methods A total of 20 SD healthy rats were randomly assigned into 4 groups,including the comparison group,the radiation group(0.9％ NaCl 0.2ml),the dexamethasne group(5mg/kg)and the Tanreqing group(0.67ml/kg).Strat intraperitoneal injection one day after radiotherapy,the rats were sacrificed after 7 days.The pathological changes of lung tissues were observed by HE stain.AQP1 expressions in lung tissues were detected by immunohistochemistry and RT-PCR test.Results Compared with the radiation group,there was an obvious amelioration in pathological injury of lung tissue in the dexamethasne and Tanreqing groups.AQP1 was increased significantly in comparison group(0.8006±0.05846),but AQP1 was decreased in the radiation group (0.4938±0.03477)(P＜0.05),and AQP1 was increased after the Tanreqing and dexamethasne treatment(0.6492±0.03477,0.6664±0.03251) (P＜0.05).Conclusion Tanreqing may have beneficial effects on radiationinduced lung injury by regulating AQP1 expression in the lungs of rats.

Controlled Ecological Life-support System(CELSS)is one of the key technologies that must be solved before founding permanent base in space such as Lunar or Mars base.After discussing with Russian experts and analysing the data,the author introduced something important about CELSS in Russia,including research methods,achievements and problems to be solved urgently.In the end a proposal for developing CELSS research in China was given based on them.

Objective:To explore the effects of endoscopic reprocessing on disinfection and its influential factors under the coronavirus disease 2019 (COVID-19) pandemic.Methods:A total of 450 endoscopes cleaned and disinfected according to Technical Specifications for Cleaning and Disinfection of Endoscopes from November 2019 to January 2020, and 450 endoscopes cleaned and disinfected according to The recommended procedure for cleaning and disinfection of gastrointestinal endoscopes during COVID-19 epidemic by Chinese Society of Digestive Endoscopology from February to April 2020 in the Second Affiliated Hospital of Chongqing Medical University were enrolled in the control group and observation group respectively by random number method. Both the control group and the observation group contained 200 gastroscopes, 200 enteroscopes and 50 ultrasound endoscopes. ATP fluorescence detection method and pour plate technique were used to evaluate the disinfection effect of endoscopes. Single factor analysis and multiple logistic regression were used to analyze the risk factors for unqualified sterilization after endoscopic reprocessing. Results:The disinfection pass rates of gastroscopes, enteroscopes and ultrasound endoscopes in the observation group were not significantly different compared with those of the control group ( P>0.05). The sterilization pass rates and ATP test pass rates of gastroscopes, enteroscopes and ultrasound endoscopes in the observation group were significantly higher than those in the control group (all P<0.05). Multivariate logistic regression analysis showed that non-strict implementation of endoscopic reprocessing ( OR=7.96, 95% CI: 4.55-22.84, P<0.001), non-standard operation ( OR=2.26, 95% CI: 1.24-5.63, P<0.001), insufficient concentration of disinfectant ( OR=5.43, 95% CI: 2.52-9.02, P<0.001), insufficient concentration ratio of multi-enzyme solution ( OR=4.38, 95% CI: 1.95-8.61, P<0.001), non-timely cleaning ( OR=2.86, 95% CI: 1.33-6.42, P<0.001), incomplete cleaning ( OR=3.75, 95% CI: 1.61-7.49, P<0.001) and improper endoscopic preservation ( OR=2.12, 95% CI: 1.36-4.12, P<0.001) were independent risk factors for unqualified sterilization after endoscopic reprocessing. Conclusion:In COVID-19 pandemic, endoscope reprocessing can significantly improve the disinfection effect of endoscopes, worthy of further clinical promotion. The failure to strictly implement the reprocessing procedure is an important factor that may lead to unqualified sterilization.

To investigate the impact of exercise on the expression of adiponectin and GLUT4 mR NA in type 2 diabetic rats, type 2 diabetic rat model was made. The diabetic rats were treated with swimming training for 8 weeks. The expression of adiponectin mRNA in perirenal fat and GLUT4mRNA in skeletal muscles were assessed by reverse transcription polymerase chain reaction (RT PCR) and the levels of blood glucose, serum insulin, and blood lipid were measured. Our results showed that the expression of adiponectin mRNA and GLUT4 mRNA in diabetic model group was decreased by 45 % (P＜0.01), 43 % (P＜0.01) respectively. The gene expression of adiponectin and GLUT4 was increased significantly in swimming group (P＜0.05 and P＜0.01, respectively).Compared with the model group, fasting insulin, TG, TC and FFA were decreased significantly in the training group (P＜0.05 or P＜0.01) as compared with model group. It is concluded that exercise can promote the expression of adiponectin mRNA and GLUT4 mRNA in type 2 diabetic rats,which may be one of the mechanisms responsible for the amelioration of insulin resistance in the rats.

Aquatic plants and the epiphytic microorganisms are important contributors to the purification of constructed wetlands. Taking the dragon-shaped water system of Beijing Olympic Park as a model, this study analyzed the structure and function of the microbial communities reside the sediment, the water body and the rhizosphere and phyllosphere of three submerged plants-Vallisneria natans, Myriophyllum verticillatum, and Potamogeton pectinatus using high-throughput sequencing technology. The results showed that the microbial diversity from the highest to the lowest were samples from sediment, plant rhizosphere, plant phyllosphere and water. The microbial diversity of plant phyllosphere samples were significantly higher than those of the water body. LEfSe analysis showed that different habitats enriched different microbial groups. The sediments mainly enriched anaerobic microbes, while the water body and the phyllosphere of plants mainly enriched aerobic microbes, and the rhizosphere of plants had the both. Functional prediction analysis showed that the abundance of denitrification marker genes in phyllosphere samples was higher than that in samples from rhizosphere, sediment and water body, and the abundance of denitrification marker genes in phyllosphere samples of M. verticillatum and P. pectinatus was higher than that of V. natans. This study could serve as a guidance for the selection of submerged plants and functional microorganisms for constructed wetlands.
Beijing ; Hydrocharitaceae ; Microbiota ; Rhizosphere ; Water

Objective: Fufang Biejia Ruangan Tablet (FBRT) is widely used for the treatment of liver fibrosis. However, Hominis Placenta (HP), as an important adjuvant of FBRT, has been restricted for medicinal using due to the limited availability, ethical controversy and safety issues. The present study aimed to investigate the therapeutic effects of novel FBRT (N-FBRT) with sheep placenta (SP) as substitute for HP on liver fibrosis and explore its possible mechanisms. Different dosages of SP in N-FBRT were also evaluated. Methods: Rats were subcutaneously injected with CCl

Objective : To investigate the molecular mechanism of Toll⁃like receptor 4 ( TLR4)/Ras homologue A (RhoA) signaling pathway involved in regulating the effect of septic serum on vascular endothelial cell permeability before and after continuous hemofiltration. Methods : The serum of 5 patients with sepsis before and after continuous hemofiltration treatment was collected , and the levels of inflammatory cytokines in serum before and after hemofiltration were detected. Human umbilical vein endothelial cells (HUVEC) were treated with serum before and after continuous hemofiltration for 24 hours. The expression of VE⁃cadherin , F ⁃actin , TLR4 and RhoA in vascular endothelial cells were detected by Western blot. A TLR4 low expression cell line was constructed to detect the effect of TLR4 low expression on the expression of VE⁃cadherin , F ⁃actin and RhoA and the permeability of endothelial cells. Results : After continuous blood treatment , the serum levels of TLR4 , RhoA , interleukin⁃1 (IL⁃1) , interleukin⁃6 (IL⁃6) and tumor necrosis factor⁃α (TNF⁃α ) significantly decreased. The expression levels of VE⁃cadherin , F ⁃actin , TLR4 and RhoA in the serum intervention group after continuous hemofiltration treatment significantly decreased , and the cell permeability significantly decreased. Low expression of TLR4 significantly promoted the expression of VE⁃cadherin and F ⁃actin , and inhibited the expression of RhoA protein. Conclusion TLR4/RhoA signaling pathway is involved in the regulation of changes in vascular endothelial cell permeability induced by septic serum after continuous hemofiltration treatment.

OBJECTIVE： To investigate the effects of crystal form on in vivo and in vitro behavior of Astilbin nanosuspensions （AT-NS）. METHODS： AT-NS1 and AT-NS2 were prepared by precipitation method and miniaturized media milling method respectively. The particle size and polydispersity index （PDI） were determined by laser particle size analyzer. X-ray diffraction （XRD）， scanning electron microscopy （SEM）， HPLC and paddle method were used to analyze and compare the structure characteristics， appearance morphology and in vitro dissolution of AT raw material， AT-NS1 and AT-NS2. Totally 15 healthy male SD rats were randomly divided into AT raw material， AT-NS1 and AT-NS2 group， with 5 rats in each group. They were given relevant medicine suspension 120 mg/kg （using water as solvent） intragastrically； blood samples  were collected from orbit before medication （0 min） and 5， 10， 20， 30， 60， 120， 240， 480 min after medication. Using rutin as internal standard， HPLC method was used to determine plasma concentration of AT in rats. Pharmacokinetic parameters were calculated by using DAS 2.0 software and then compared. RESULTS： The particle sizes of AT-NS1 and AT-NS2 were （212.48±0.32） nm and （226.36±2.29） nm， respectively； PDI were 0.129 3±0.026 3 and 0.254 7±0.012 4. XRD analysis showed AT-NS1 was amorphous， and AT-NS2 was crystalline. Diffraction peaks of both were different from those of AT raw material. SEM analysis showed that AT-NS1 and AT-NS2 were similar in morphology， and they were spherical and uniform in size； AT raw material was lump with large particle size and different sizes. Results of dissolution tests showed that accumulative dissolution of AT raw material， AT-NS1 and AT-NS2 were 4.54％， 35.01％， 12.22％ at 1 h； accumulative dissolution of them were 24.01％， 81.14％， 64.69％ at 12 h； accumulative dissolution of them were 36.04％， 84.47％， 85.86％ at 24 h， respectively. Results of pharmacokinetic study showed， compared with AT raw material group， cmax and AUC0-∞ of AT-NS1 and AT-NS2 groups as well as t1/2z of AT-NS1 group were increased significantly， while tmax of AT-NS1 group was significantly reduced significantly （P＜0.05）. Compared with AT-NS2 goup， cmax， AUC0-∞ and t1/2z of AT-NS1 group were increased significantly， while tmax was reduced significantly （P＜0.05）. CONCLUSIONS： When AT is prepared into NS， dissolution in vitro and oral absorption in vivo of AT are increased significantly. In a short time， the dissolution/absorption of amorphous NS is faster than crystalline NS.