1.Combined antimicrobial susceptibility test against pan-drug-resistant Acinetobacter baumannii with E-test and microdilution checkerboard assay
Chinese Journal of Microbiology and Immunology 2013;(2):144-147
Objective To evaluate the activity of antibiotics against pan-drug-resistant (PDR) Acinetobacter baumannii by combination antimicrobial susceptibility test in viro with epsilometric methods (Etest method) and microdilution checkerboard (CB method),and to detect a good correlation between timekill curve with the above mentioned two assays.Methods Thirty-one clinical isolates of PDR Acinetobacter baumannii were selected for mono and combination antimicrobial susceptibility test in vitro by E-test and CB method,then a comparison was conducted between the test results and the time-kill curve.Mono drugs involved tigecycline,colistin,imipenem and amikacin,and combinations involved two of drugs above,and three drugs involved imipenem/tigecycline,plus amikacin combination.Results Synergistic effect was detected in imipenem plus colistin and tigecycline plus imipenem combination.A high comparability was revealed between the E-test method with antimicrobial drugs added into the culture medium and the time-kill curves.Synergy in the combination of imipenem/tigecycline,plus amikacin was detected by the CB method and time-kill curves.Conclusion The results showed that the effect of specific combination of antibiotics against PDR Acinetobacter baumannii could be predicted by testing their synergistic effect with combination antimicrobial susceptibility test.
2.Observation on Therapeutic Results in Tuina Treatment of 56 Cases of Infantile Constipation
Journal of Acupuncture and Tuina Science 2004;2(5):22-23
After 56 cases of infantile constipation were divided into the pattern of stagnation of heat in the stomach and intestines, pattern of obstruction of qi activity and pattern of deficiency in both qi and yin, the treatments were given by infantile Tuina techniques on the infantile points of Dachang (Extra),Zhongwan (CV 12), Bagua (Extra), Qijiegu (Extra), Chengshan (BL 57), Zusanli (ST 36) and Yingxiang (LI 20). The results showed cure in 45 cases, effectiveness in 9 cases, failure in 2 cases and the total effective rate was 96.5%.
3.Advances in MicroRNA and anaesthetic research
Journal of Medical Postgraduates 2015;(2):207-211
It has long been concerned about the mechanism , pathology and toxicology of anaesthetic involving drug addiction and its influence on human body .In recent years , as a short non-coding RNA negatively regulating the genes in cells , MicroRNAs (miRNAs) may turn out to be a focus issue which is related to apoptosis , metabolism, inflammation, and tumorigenesis.This article illuminates the influence on gene expression introduced by common anaesthetics and the interaction between gene and its target site . Analyzing the potential medical applications of miRNA , this article reviews the correlation between miRNAs and anaesthetic to provide new evidences in this emerging field .
4.The transport of gastrodin in Caco-2 cells and uptake in Bcap37 and Bcap37/MDR1 cells.
Acta Pharmaceutica Sinica 2010;45(12):1497-502
Gastrodin (GAS) is the major bioactive component of the extracts from the rhizome of Gastrodia elata Blume. The aim of this study is to investigate the transport of GAS in Caco-2 cells and the interaction of P-glycoprotein and GAS. The apparent permeability coefficients (Papp) of GAS were measured as a function of directions and concentrations. It was demonstrated that the efflux ratio was < 2.0 over the range of 50-500 micromol x L(-1) of GAS from bi-directional transport studies. The transport rate of GAS was dependent on the concentrations. Papp of GAS was not affected by transport directions, GAS concentration or the classical inhibitors of P-glycoprotein (verapamil and GF 120918). The cellular accumulation of GAS in Bcap37/MDR1 cells transected with hMDR1 gene, was similar to that in Bcap37 cells. The accumulation in both cell lines was concentration dependent. GAS did not affect the accumulation of Rhodamine 123 in Bcap37/MDR1 cells over the range of 50-500 micromol x L(-1). It indicated that the transport of GAS in Caco-2 cell monolayers mainly is by passive paracellular transport pathway. P-glycoprotein did not participate in the absorption of GAS in the intestine or the transport across the blood-brain barrier.
5.The role of inhibitory control in the use of theory of mind among elders
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(8):732-734
Objective To investigate the ability of theory of mind use in elders,and determine the role of inhibitory control in the use of theory of mind. Methods The participants included 30 young-old people ,30 oldold people and 30 young people. Their ability of theory of mind use and inhibitory control were examined with The Referential Communication Task and Hayling Sentence Completion Test,respectively. Results The correct rate of referential communication task was significantly lower in old-old people (0.43 ± 0.32) than those of young-old people (0.69 ±0.24, P=0. 001 ) and young people (0. 77 ±0. 25, P<0. 001 ). Partial correlation analysis showed that the total errors in Hayling Test-B was negatively correlated with the correct rate of Referential Communication Task ( r= -0.442, P<0.001 ). Hiberarchy regression analysis showed that the total errors in Hayling Test-B entered the equation ( β = -0.451, P<0. 001 ) and could independently explained 16.8% of the variance (△R2 = 0. 168, △F = 19.359, P < 0.001 ) after controlling for age. Conclusion Old-old people show worse performance in the use of theory of mind. The impairment of inhibitory control can partly explain the decline of theory of mind use in old-old people.
6.Progress in study of natural killer cells and their applications in hematological diseases: a report from the 2013 EHA annual meeting
Journal of Leukemia & Lymphoma 2013;22(8):453-455
There were 17 literatures related to the clinical applications of natural killer cells in hematological diseases in the 18th annual meeting of the European Hematology Association (EHA).Here an overview of these literatures is given that helps to tnderstand how natural killer cells can be explored for future clinical interventions.
7.Cognition Survey for the Risk and Early Symptoms of Stroke in Patients With Atrial Fibrillation
Chinese Circulation Journal 2016;31(12):1198-1201
Objective: To understand the cognition status for risk factors and early symptoms of stroke via face to face questionnaire survey in 336 in-hospital patients with atrial ifbrillation (AF).
Methods: A face to face questionnaire survey was conducted by uniformly trained investigators in 336 AF patients who were admitted in our hospital more than 3 days from 2014-04-01 to 2014-10-01.
Results: There were 300/336 AF patients ifnished the questionnaire and among them 131 (43.7%) patients know that AF may increase the risk of stroke and 169 (56.3%) patients unknown or uncertain. There were 41.3%-79.3% patients having cognition for early symptoms of stroke and only 25.3% (76/300) patients may identify all 5 early signs of stroke.
Conclusion: In our research, AF patients had poor cognition for the risk and early signs of stroke. Medical professional should intensify the propaganda and education for stroke prevention.
9.Research of self-management self-efficacy and health-related quality of life in hemodialysis patients
Chinese Journal of Behavioral Medicine and Brain Science 2008;17(4):316-317
Objective To investigate the self-management self-efficacy,health-related quality of life of hemodialysis patients and explore the relationship between them. Methods Self-management self-efficacy questionnaire and SF-36 were used,and 55 hemodialysis patients participated in this study. Pearson correlate and regression analysis were used to test the relationship between them. Results 55 questionnaires were available. Positively associated between self-management self-efficacy and HRQOL(r=0.268,P<0.05);significantly positively associated between physical activity self-efficacy and HRQOL(r=0.409,P<0.01). Regression analysis showed that physical activity self-efficacy is the factor of HRQOL (t=3.261,P<0.01).Conclusion Physical activity self-efficacy is the factor of HRQOL in hemodialysis patients,increasing self-management self-efficacy is benefit to their HRQOL.
10.Role of myosin light chain kinase in increase in permeability of human pulmonary microvascular endothelial cells induced by mechanical stretch
Chinese Journal of Anesthesiology 2010;30(12):1472-1474
Objective To evaluate the role of myosin light chain kinase(MLCK)in the increase in the permeability of human pulmonary microvascular endothelial cells(HPMVECs)induced by mechanical stretch.Methods HPMVECs were cultured in vitro and then randomly divided into 3 groups(n = 4 each): mechanical stretch group(group S),ML9 treatment group(group M)and control group(group C).In group S,the monolayer cells and magnetic beads coated with an RGD peptide were incubated in serum-free MCDB131 medium for 2 h,the unbound beads were washed out,and then the cells were exposed to magnetic twisting stimulation(MTS)for 2 h(frequency 3 Hz,intensity 4.2 mT).In group M,the monolayer cells and magnetic beads coated with an RGD peptide were incubated for 2 h in serum-free MCDB131 medium in which MLCK inhibitor ML9(50μmol/L)was added,and the other procedures were the same as in group S.In group C,the cells after washing as in group S were incubated for 2 h without exposing to MTS.Monolayer permeability was detected with FITC-dextran flux in transwell model.The distribution of integrin αVβ3 and actin was detected using the immunofluorescence assay.Results Compared with group C,the permeability of HPMVECs was significantly increased in group S,while no significant change was found in group M.Compared with group S,the permeability of HPMVECs was significantly decreased in group M.In addition,actin polymerized to form stress fiber,and integrin αVβ3 clustered at the end of stress fiber in group S,while actin mainly distributed in the surrounding area of the cell membrane and integrin αVβ3 evenly distributed on the cell surface in group C and M.Conclusion The mechanism by which mechanical stretch induces the increase in the permeability of HPMVECs is related to MLCK activation-mediated stress fiber formation and integrin αVβ3 clustering.