scholarly journals Plethora of Resistance Genes in Carbapenem-Resistant Gram-Negative Bacteria in Greece: No End to a Continuous Genetic Evolution

2022 ◽  
Vol 10 (1) ◽  
pp. 159
Author(s):  
Katerina Tsilipounidaki ◽  
Zoi Athanasakopoulou ◽  
Elke Müller ◽  
Sindy Burgold-Voigt ◽  
Zoi Florou ◽  
...  

Carbapenem-resistant Gram-negative bacteria are a public health threat that requires urgent action. The fact that these pathogens commonly also harbor resistance mechanisms for several other antimicrobial classes further reduces patient treatment options. The present study aimed to provide information regarding the multidrug resistance genetic background of carbapenem-resistant Gram-negative bacteria in Central Greece. Strains from a tertiary care hospital, collected during routine practice, were characterized using a DNA microarray-based assay. Various different resistance determinants for carbapenems, other beta-lactams, aminoglycosides, quinolones, trimethoprim, sulfonamides and macrolides were detected among isolates of the same sequence type. Eighteen different multidrug resistance genomic profiles were identified among the twenty-four K. pneumoniae ST258, seven different profiles among the eight K. pneumoniae ST11, four profiles among the six A. baumannii ST409 and two among the three K. oxytoca. This report describes the multidrug resistance genomic background of carbapenem-resistant Gram-negative bacteria from a tertiary care hospital in Central Greece, providing evidence of their continuous genetic evolution.

2005 ◽  
Vol 134 (2) ◽  
pp. 315-322 ◽  
Author(s):  
M. D. TANRIOVER ◽  
G. S. GUVEN ◽  
D. SEN ◽  
S. UNAL ◽  
O. UZUN

Sepsis continues to have a substantial mortality and morbidity despite advances in the diagnosis and management of this condition. We retrospectively analysed hospital charts of patients diagnosed to have sepsis between January 2002 and June 2003. Demographic characteristics of patients, microbiological findings and predictors of survival were evaluated. Sixty-nine sepsis episodes that occurred in 63 patients were analysed. The most common underlying diseases were hypertension, malignancies and diabetes mellitus. Renal insufficiency, respiratory distress and disseminated intravascular coagulation developed in 52·2, 30·4 and 30·4% of the episodes respectively; 47·7% of the blood cultures yielded an organism. Gram-negative bacteria were the predominant microorganisms (65·9%). Fifty-five patients (87·3%) died. Mechanical ventilation and underlying renal disease were significant determinants of mortality. In conclusion, Gram-negative bacteria remain the major pathogens in sepsis. The mortality remains very high, and a change in the clinical approach to the septic patient should be employed to improve the outcome.


2014 ◽  
Vol 13 (12) ◽  
pp. 56-60 ◽  
Author(s):  
Dr. Ph. Henkhoneng Mate ◽  
◽  
Dr. Kh Sulochana Devi ◽  
Dr. Ksh Mamta Devi ◽  
Dr. San Damrolien ◽  
...  

Author(s):  
Kumud Bala ◽  
Ridhima Wadhwa ◽  
Rachana Bohra

Objective: The purpose of the present study was to identify the fermenting and non-fermenting gram negative bacteria from the tertiary care hospital.Methods: The conventional method of identification by biochemical analysis and antibiotic susceptibility test was performed by Kirby-Bauer disc diffusion method. Furthermore, analysis of microbes was done by Vitek-2.Results: 424strains of lactose fermenting and non-lactose fermenting gram negative bacilli were isolated from 3097 clinical samples. From the total lactose fermenting bacteria Escherichia coli was the predominant isolate accounting for 50.94% specimens, followed by Klebsiella pneumonia 27.59% and Enterobacter 0.47%. From the total non-lactose fermenting gram negative bacilli Acinetobacter baumannii was the predominant isolate accounting for 12.73% specimens followed by Pseudomonas aeroginosa 6.13%, other isolates were Stenotrophomonas maltophilia 1.17% , Burkholderia cepacia 0.94%. In the present study male were more infected than female. The study also showed that lactose fermenting bacteria were more infectious than non lactose-fermenting bacteria and isolates were from urine samples.Conclusion: Both Non-Lactose Fermenting Gram Negative Bacilli and Lactose Fermenting Gram Negative Bacilli were found to be major contaminants, and are important pathogenic bacteria causing wide range of infections in the tertiary care hospital.Keywords: Lactose fermenting gram negative bacteria, Vitek-2, Tertiary Care Hospital, Kirby-Bauer Disc Diffusion, Lactose non-fermenting gram negative bacteria  


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