Résumé
Objective To understand the distribution and antimicrobial resistance of pathogens causing wound in-fection in army officers and soldiers following military training injury,and provide reference for antimicrobial use in clinical anti-infection treatment.Methods Wound secretion from injured army patients who were admitted to a mili-tary hospital between January 2014 and June 2015 was performed bacterial culture and antimicrobial susceptibility testing.Results 647 pathogenic bacteria strains were isolated from 1 029 wound secretion specimens ,isolation rate was 62.88%,the top 6 isolated bacteria were Staphylococcus aureus (S .aureus ,29.99%,n =194),Escherichia coli (E.coli,19.32%,n=125),Pseudomonas aeruginosa (19.17%,n=124),Enterococcus spp .(13.60%,n=88), Klebsiella pneumoniae (K .pneumoniae ,7.73%,n =50),and Acinetobacter baumannii (A.baumannii,5.87%, n=38).S .aureus and Enterococcus spp .had high susceptibility to vancomycin,linezolid ,and daptomycin (resist-ance rates ≤3.41 %),44.33% of S .aureus were methicillin-resistant,2.27% of Enterococcus spp .were vancomy-cin-resistant .E.coli and K .pneumoniae had high susceptibility rates to piperacillin/ tazobactam (resistance rates were 1 .60% and 0 respectively),except A.baumannii,resistance rates of gram-negative bacteria to carbapenems were all low (resistance rates ≤4.00%).Conclusion Military clinicians should select appropriate antimicrobial agents according to antimicrobial susceptibility testing results,reduce the disability rate due to infection in trauma patients,and provide clinical support for the treatment of the wounded.
Résumé
Objective To understand the distribution and drug resistance of fungus isolated from urinary tract infection for guid-ing clinical rational drug use.Methods The clinically submitted urinary system samples from January 2012 to June 2013 were per-formed the fungal identification and the drug susceptibility test to 5 kinds of anti-fungal drugs.The detection results were analyzed by the WHONET software.Results (1)239 strains of fungi were isolated,in which Candida albicans occupied the top place,fol-lowed by Candida glabrata and Candida tropicalis;(2)the sensitivity rates of 239 fungal strains to fluconazole(FCA),itraconazole (ITR),voriconazole(VRC),5-fluorocytosine(5-FC)and amphotericin B(AMB)were 63.2%,61.9%,92.5%,93.7% and 93.7%respectively;(3)Candida albicans had the high sensitivity to 5 kinds of anti-fungal drugs,which reached more than 95%;(4)Candida gla-brata had the lowest sensitivity to FCA and ITR,only 9.7%.Conclusion The fungal infection in the urinary system is dominated by Candi-da albicans,due to the different sensitivity to 5 kinds of anti-fungal drugs in different fungi,therefore strengthening the fungal identification of the urinary system and the drug sensitivity test can provide the important reference basis for clinical rational use of anti-fungal drugs.
Résumé
Objective To determine the sensitization of Nicotinamide (NA) on None Focused Ultrasound (NFU) on GLC-82 cells in vitro. Methods The subjectives were divided into A、B、C and D four groups, group A was negative control, group B was treated with NA, group C was irradiated with NFU, group D was treated with both NFU and NA; MTT assay was used to evaluate the cytotoxicity of NA and its sensitivity for NFU on GLC-82 cells quantified by calculating the sensitive enhancement ratios (SER); Morphologic change of cells was observed with light microscope, fluorescence microscope and scanning electron microscope;Flow cytometry was performed to determine the percentage changes of apoptosis and distributional percentage of the cell cycle of GLC-82 cells in response to NFU, NA and the effect of its intervention to NFU. Results The cytotoxicity of NA increased in a dose-dependent manner after 24-hour treatment, with the optimal dose range of 1 mg/mL～5 mg/mL. A sub-toxic dose of NA at 3 mg/ml was used in the subsequent experiments; After treatment with NA plus NFU, microvilli and filipodium of GLC-82 cells reduced, shortened and shrunk into corpuscule-shape; The apoptosis rate of group D was more than that in group B and C, with cell cycle arrested at phase S and G2.Conclusion NA can significantly enhance the effect of NFU on GLC-82 cells, which provides evidence for NA as a sensitization to NFU in clinic.