Objective To investigate the therapeutic efficacy of dandelion extract on intracerebral hemorrhage(ICH)rats and its effect on nuclear factor erythroid 2 related factor 2(Nrf2)/heme oxygenase-1(HO-1)signaling pathway.Methods Stereotaxic intracranial injection of type Ⅳ col-lagenase was used to establish rat ICH model.Then 48 ICH rats were randomly divided into mod-el group,dandelion extract group,Nrf2 inhibitor(ML385)group and dandelion extract+ML385 group,with 12 rats in each group.Another 12 rats served as sham operation group.After treat-ment,neurological deficits was evaluated and scored for all groups of rats.Blood-brain barrier(BBB)function,neuronal apoptotic rate in the hippocampus,serum levels of COX-2,IL-6 and iNOS,cerebral contents of CAT,GSH-Px,ROS and MAD,and protein levels of Nrf2/HO-1 signal pathway were detected.Results Compared with sham operation group,the neurological deficit score,Evans blue exudation,appptotic rate of hippocampal neurons,serum COX-2,IL-6,iNOS levels,brain tissue reactive oxygen species(ROS)and malondialdehyde level in the model group were significantly increased(P＜0.05),and the expression levels of CAT,GSH-Px,Nrf2 and HO-1 proteins were significantly decreased(P＜0.05).Compared with dandelion extract group,combination of dandelion extract and ML385 significantly increased the neurological deficit score(2.54±0.23 vs 1.43±0.19),Evans blue exudation[(22.15±3.61)ng/mg vs(6.54±1.24)ng/mg],apoptotic rate[(31.97±5.26)％vs(3.51±0.94)％],serum COX-2[(5.82±1.16)ng/ml vs(1.34±0.42)ng/ml],IL-6[(1.47±0.31)ng/ml vs(0.43±0.14)ng/ml]and iNOS levels[(59.91±10.36)U/ml vs(13.94±3.78)U/ml],brain tissue ROS[(4.70±0.45)U/kg vs(1.70± 0.51)U/kg]and MDA levels[(3.72±0.52)nmol/mg vs(1.17±0.34)nmol/mg],and decreased expression levels of CAT[(2.54±0.59)U/mg vs(5.68±1.04)U/mg],GSH-Px[(8.01±0.86)U/mg vs(16.97±3.03)U/mg],Nrf2(0.67±0.13 vs 1.07±0.19)and HO-1(0.55±0.07 vs 0.86± 0.10,P＜0.05).Conclusion Dandelion extract can enhance the antioxidant activity in ICH rats by activating Nrf2/HO-1 signaling pathway,prevent the progression of inflammation and oxida-tive stress,inhibit neuronal apoptosis in hippocampus,repair blood-brain barrier function,and thus improve nerve function.

Objective To evaluate the utilization of human serum albumin (HSA ) in intensive care unit (ICU ) to pro-mote rational use of HSA clinically .Methods Data were collected from the patients received HSA therapy during the period of January 1 ,2015 to December 31 ,2015 .The indications and usage of HSA were analyzed statistically .Results 416 bottles of HSA were administered to 64 patients .The average dose was 62 .5g per patient .The most popular indication was for hypopro-teinemia (39 .1% ) followed by encephaledema ,craniocerebral trauma ,shock and tumors .Before the HSA therapy ,36 patients (56 .3% ) had albumin level of 15-25 g/L and 23 patients (35 .9% ) of 25-35 g/L .Conclusion HSA is widely used in ICU for different indications .Some misuses still exist .Guidelines for proper use of HSA are needed to guarantee its rational use .HSA should be used strictly following these guidelines .

Objective To investigate the effects of clopidogrel combined with edaravone on blood coagulation and neurological functions in patients with acute cerebral infarction .Methods One hundred and twenty cases of acute cerebral infarction that were ad-mitted into the hospital from September 2014 to September 2016 were recruited as research subjects and were randomly divided into the study group and the control group , each consisting of 60 cases.The control group was given clopidogrel treatment , while the study group was given clopidogrel combined with edaravone .The therapeutic effects , blood coagulation and neurological functions of the 2 groups were analyzed.Results After treatment, the blood coagulation function of the patients in the two groups were considerably improved , plasma viscosity, whole blood high viscosity, whole blood low viscosity and fibrinogen were all significantly decreased (P<0.05), and those of the study group showed better improvement (P<0.05).After treatment, neurological deficiency of the 2 groups were more sig-nificantly improved (P<0.05), with the improvement of the study group being superior to that of the control group (P<0.05).Fol-lowing treatment, the effective rate of the 60 cases in the study group was 91.67%, which was significantly higher than that of the con-trol group (73.33%) (P<0.05).Conclusion Clopidogrel combined with edaravone could produce definite effects on acute cerebral infarction, and in the meantime could significantly improve the blood coagulation of the patients with acute cerebral infarction and pro -mote recovery of neurological function as well .

Objective To analyze the distribution of class 1,2 and 3 integrons and their gene cassettes,and to explore its relationship with drug resistance in Shigella.Methods Antimicrobial susceptibility was detected by minimal inhibitory concentration (MIC) method.All the genes of integrons and gene cassettes were amplified by polymerase chain reaction (PCR).The amplicons were identified by amplified fragment length polymorphism (AFLP) and sequencing.Results Fifty seven multi-drug resistant strains were identified from a total of 62 Shigella strains (91.9％).Among multi drug resistant strains,52 strains carried integrons of class 1 (91.2 ％) and 55 strains carried integrons of class 2 (96.5％).Only 2 strains carried class 1 integrons alone,5 strains carried class 2 integrons alone and 50 strains had both class 1 and class 2 integrons.Class 3 integrons were not detected.The gene cassettes of typical class 1 integrons,dfrV and dfrA17-aadA5,were detected in 6 strains and 2 strains,respectively.Atypical class 1 integrons with gene cassettes blaOxA30 aadA1 were detected in 44 strains.The typical and atypical class 1 integrons coexisted in 6 Shigella flexneri strains.Gene cassettes for class 2 integrons were dfrA1 sat1-aadA1.Conclusions The multi-drug resistant Shigella strains are widely distributed in Ji'nan,and the atypical class 1 integrons and class 2 integrons are common in these strains.Coexistence of the two integrons is observed in some of the strains.