scholarly journals Phenotypic and Genotypic Characteristics of Biofilm Formation in Clinical Isolates of Acinetobacter baumannii

2021 ◽  
Vol Volume 14 ◽  
pp. 2613-2624
Author(s):  
Zhaoyinqian Li ◽  
Zixuan Ding ◽  
Yao Liu ◽  
Xinrui Jin ◽  
Jingling Xie ◽  
...  
Keyword(s):  
Acinetobacter Baumannii ◽  
Biofilm Formation ◽  
Clinical Isolates ◽  
Genotypic Characteristics

scholarly journals Correlation of biofilm formation and antibiotic resistance among clinical and soil isolates of Acinetobacter baumannii in Iraq

2019 ◽  
pp. 1-10 ◽  
Author(s):  
Pakhshan A. Hassan ◽  
Adel K. Khider
Keyword(s):  
Acinetobacter Baumannii ◽  
Congo Red ◽  
Biofilm Formation ◽  
Opportunistic Pathogen ◽  
Microtiter Plate ◽  
Test Tube ◽  
Clinical Isolates ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Disk Diffusion Method

Acinetobacter baumannii is an opportunistic pathogen that is reported as a major cause of nosocomial infections. The aim of this study was to investigate the biofilm formation by A. baumannii clinical and soil isolates, to display their susceptibility to 11 antibiotics and to study a possible relationship between formation of biofilm and multidrug resistance. During 8 months period, from June 2016 to January 2017, a total of 52 clinical and 22 soil isolates of A. baumannii were collected and identified through conventional phenotypic, chromo agar, biochemical tests, API 20E system, and confirmed genotypically by PCR for blaOXA-51-like gene. Antibiotic susceptibility of isolates was determined by standard disk diffusion method according to Clinical and Laboratory Standard Institute. The biofilm formation was studied using Congo red agar, test tube, and microtiter plate methods. The clinical isolates were 100% resistance to ciprofloxacin, ceftazidime, piperacillin, 96.15% to gentamicin, 96.15% to imipenem, 92.31% to meropenem, and 78.85% to amikacin. The soil A. baumannii isolates were 100% sensitive to imipenem, meropenem, and gentamicin, and 90.1% to ciprofloxacin. All A. baumannii isolates (clinical and soil) were susceptible to polymyxin B. The percentage of biofilm formation in Congo red agar, test tube, and microtiter plate assays was 10.81%, 63.51%, and 86.48%, respectively. More robust biofilm former population was mainly among non-MDR isolates. Isolates with a higher level of resistance tended to form weaker biofilms. The soil isolates exhibited less resistance to antibiotics than clinical isolates. However, the soil isolates produce stronger biofilms than clinical isolates.

scholarly journals Biofilm formation in carbapenemase-producing Pseudomonas spp. and Acinetobacter baumannii clinical isolates

2018 ◽  
Vol 73 ◽  
pp. 119-120 ◽  
Author(s):  
R. Papa ◽  
I. Bado ◽  
V. Iribarnegaray ◽  
M.J. Gonzalez ◽  
P. Zunino ◽  
...  
Keyword(s):  
Acinetobacter Baumannii ◽  
Biofilm Formation ◽  
Clinical Isolates ◽  
Pseudomonas Spp

In vitro effect of subminimal inhibitory concentrations of antibiotics on the biofilm formation ability of Acinetobacter baumannii clinical isolates

2017 ◽  
Vol 30 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Maja Bogdan ◽  
Domagoj Drenjancevic ◽  
Ivana Harsanji Drenjancevic ◽  
Branka Bedenic ◽  
Vlasta Zujic Atalic ◽  
...  
Keyword(s):  
Acinetobacter Baumannii ◽  
Biofilm Formation ◽  
Clinical Isolates ◽  
Vitro Effect

scholarly journals Assessment of biofilm formation among clinical isolates of Acinetobacter baumannii in burn wounds in the west of Iran

2018 ◽  
Vol 64 (15) ◽  
pp. 30 ◽  
Author(s):  
Reza Hatami Moghadam ◽  
Amirhoushang Alvandi ◽  
Neda Akbari ◽  
Parvaneh Jafari ◽  
Ramin Abiri
Keyword(s):  
Acinetobacter Baumannii ◽  
Biofilm Formation ◽  
Clinical Isolates ◽  
The West ◽  
Burn Wounds
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