scholarly journals Epidemiological characterization of respiratory tract infections caused by Mycoplasma pneumoniae during epidemic and post-epidemic periods in North China, from 2011 to 2016

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Jiuxin Qu ◽  
Chunxia Yang ◽  
Fang Bao ◽  
Shuyan Chen ◽  
Li Gu ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Mycoplasma Pneumoniae ◽  
Respiratory Tract Infections ◽  
North China ◽  
Tract Infections ◽  
Epidemiological Characterization

scholarly journals Characterization of the microflora of ventilator-associated respiratory tract infections in patients with severe trauma

2015 ◽  
Vol 20 (1) ◽  
pp. 8-13
Author(s):  
O. A Orlova ◽  
V. G Akimkin
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Severe Trauma ◽  
Surgical Intensive Care Unit ◽  
Surgical Intensive Care ◽  
Microbial Associations ◽  
Initial Severity ◽  
Tract Infections

Rationale The relevance of ventilator-associated respiratory tract infections in severe injury patients (SIP) is associated with both features of causative pathogens and the initial severity of the state of patients. Among causative pathogens nosocomial flora is dominant. Purpose - to perform an analysis of the microbiological monitoring of ventilator-associated respiratory tract infections in SIP. The analysis was based on the results of a prospective epidemiological, clinical, and instrumental study of 100 SIP with ventilator-associated respiratory tract infections, stayed in the surgical intensive care unit. The proportion of ventilator-associated respiratory infections in the structure of nosocomial infections in these patients is between 90 - 95%, at that there was revealed the prevalence of nosocomial pneumonia (61%). Ventilator-associated respiratory tract infection most commonly occurs during the first 10 days of mechanical ventilation. The prevailing flora was represented by Gram negative Acinetobacter baumamnnii (40.3 ± 2.1%) and Pseudomonas aeruginosa (38.4% ± 3.2%). Isolated microorganisms possessed multiple antibiotic resistance, with the greatest extent to aminoglycosides - 69.5%, fluoroquinolones - 40.3%, penicillin - 37.6%; cephalosporins (third generation) - 33.8%. There is noted marked preponderance of microbial associations compared with monocultures 57.1 ± 5.3%.

scholarly journals Molecular Mechanisms of Macrolide Resistance in Clinical Isolates of Mycoplasma pneumoniae from China

2009 ◽  
Vol 53 (5) ◽  
pp. 2158-2159 ◽  
Author(s):  
Deli Xin ◽  
Zuhuang Mi ◽  
Xu Han ◽  
Ling Qin ◽  
Jing Li ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Molecular Mechanism ◽  
Mycoplasma Pneumoniae ◽  
Respiratory Tract Infections ◽  
Molecular Mechanisms ◽  
Point Mutations ◽  
Macrolide Resistance ◽  
The Other ◽  
23S Rrna ◽  
Tract Infections

ABSTRACT Fifty clinical Mycoplasma pneumoniae strains were isolated from 370 children with respiratory tract infections. Four strains were susceptible to macrolides, while the other 46 (92%) were macrolide resistant. The molecular mechanism of resistance was shown to be associated with point mutations in 23S rRNA at positions 2063 and 2064.

scholarly journals Characterization of Macrolide Efflux Pump mef Subclasses Detected in Clinical Isolates of Streptococcus pyogenes Isolated between 1999 and 2005

2009 ◽  
Vol 53 (5) ◽  
pp. 1921-1925 ◽  
Author(s):  
J. Blackman Northwood ◽  
M. Del Grosso ◽  
L. R. Cossins ◽  
M. D. Coley ◽  
R. Creti ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Streptococcus Pyogenes ◽  
Respiratory Tract Infections ◽  
Efflux Pump ◽  
Global Distribution ◽  
Clinical Isolates ◽  
Mechanism Of Resistance ◽  
Efflux Mechanism ◽  
Tract Infections

ABSTRACT The macrolide efflux mechanism of resistance, mef, was characterized in community-acquired respiratory tract infections with Streptococcus pyogenes. Fifty-four (4.6%) M phenotype isolates were screen tested as negative for mef(A). Of these 54 isolates, 5 (0.4%), 27 (2.3%), and 1 (0.1%) were considered to be mef(I) positive, a novel mosaic variant of mef, or a novel subclass of mef, respectively. This study shows (i) the definitive presence of mef(E) in S. pyogenes and its global distribution, (ii) the presence of a mosaic variant of mef composed of mef(A) and mef(E), (iii) the previously undescribed presence of mef(I) in S. pyogenes, and (iv) the presence of a novel subclass of mef in S. pyogenes.

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