Application value of lipopolysaccharides and (1-3)-β-D glucan detection in acute pancreatitis complicating infection / 国际检验医学杂志

Objective To investigate the clinical application value of endotoxin and (1-3)-β-D glucan detection in the patients with acute pancreatitis(AP).Methods The MB-80 microbiology rapid dynamic detection system was applied to detect the concentration of plasma LPS and (1-3)-β-D glucan in the patients with AP.Then the results were analyzed.Results Among 184 cases of AP complicating peripancreatic abscess and bilateral lung infection,endotoxin G-lipopolysaccharides positive was in 23 cases,the average value was 394.07 pg/mL,the positive rate was 10.87%,and 15 cases of Gram-negative bacterial infection were verified by the microorganism culture.Among 175 cases of AP complicating peripancreatic abscess and bilateral lung infection,67 cases were(1-3)-β-D glucan positive,the average value was 93.22 pg/mL,the positive rate was 38.29%,which were with the positive rate of serum(1-3)-β-D glucan in the non-AP group,the difference was statistically significant(P<0.05),the microorganism culture or smear verified that 22 cases were fungal infection.Conclusion Plasma endotoxin and (1-3)-β-D glucan detection provides the laboratory biological indicator and is conducive to the assessment of AP infection severity and clinical medication.

Clinical application of G-lipopolysaccharides detection in patients with traumatic brain injury / 国际检验医学杂志

Objective To study the application value of G-lipopolysaccharides(G-LPS) detection in patients with traumatic brain injury(TBI).Methods From Jan.2013 to Jun.2014,plasma G-LPS of TBI-patients and non-patients in this hospital were detected by using MB-80 microbiology analyzer and compared.Results of pathogenic microbiological detection of G-LPS positive TBI patients were analyzed,and G-LPS levels,detected before and after treatment,were also analyzed.Results G-LPS positive rate of TBI patients(33.33%) was higher than the 13.34% of non-TBI patients(P<0.05).After treatment,G-LPS level in G-LPS positive TBI patients significantly decreased(P<0.05).The common pathogenic bacteria,causing infection in TBI patients,included Acinetobacter bauman,Klebsiella pneumoniae and Escherichia coli,and the most common infection diseases included respiratory tract infections and urinary tract infections.Conclusion G-LPS detection could be used for the early detection of secondary infection in TIB patients,with significance for guiding clinical treatment.

Distribution and antimicrobial resistance of pathogens in blood cultures in a tertiary hospital from 2012 to 2015 / 中国感染控制杂志

Objective To investigate the distribution and antimicrobial resistance of major pathogens causing bloodstream infection in a tertiary hospital,so as to guide the clinical rational use of antimicrobial agents.Methods Blood specimens from patients with suspected bloodstream infection in this hospital between January 2012 and January 2015 were cultured,identified and performed antimicrobial susceptibility testing,the major pathogens and antimi-crobial susceptibility testing results were analyzed statistically.Results A total of 1 658 strains of pathogens were isolated from 19 326 blood culture specimens,isolation rate was 8.58%,in which gram-negative bacilli,gram-posi-tive cocci,and fungi accounted for 58.57% (n=971 ),39.38% (n=653),and 2.05% (n=34)respectively,the major gram-negative bacillus,gram-positive coccus,and fungus were Escherichia coli ,coagulase-negative staphylo-cocci (CNS),and Candida albicans respectively.The isolated pathogens mainly distributed in departments of hema-tology,gastroenterology,and cardiovascular surgery.Detection rates of extended-spectrumβ-lactamases (ESBLs)-producing Escherichia coli and Klebsiella pneumoniae were 56.35% and 36.14% respectively,but were highly sen-sitive to cefoperazone/sulbactam and carbapenems (resistance rates <3%).The percentage of methicillin-resistant coagulase-negative staphylococcus (MRCNS ) and methicillin-resistant Staphylococcus aureus (MRSA ) were 78.60% and 32.28%respectively,but were highly sensitive to vancomycin and linezolid(resistance rates < 1 %). Conclusion Escherichia coli and CNS are predominant pathogens causing bloodstream infection in this hospital,antimicro-bial resistance rates are high;regular analysis on distribution and antimicrobial resistance of pathogens causing bloodstream infection is helpful for the prevention and control of infection caused by multidrug-resistant organisms.