نوع مقاله : مقاله های پژوهشی
نویسندگان
1 دانشجو دکتری میکروبیولوژی، گروه میکروبیولوژی و بیوتکنولوژی میکروبی، دانشکدهی علوم زیستی و بیوتکنولوژی، دانشگاه شهید بهشتی، تهران، ایران
2 دانشیار، گروه میکروبیولوژی و بیوتکنولوژی میکروبی، دانشکدهی علوم زیستی و بیوتکنولوژی، دانشگاه شهید بهشتی، تهران، ایران
3 استاد، مرکز تحقیقات پیوند، دانشگاه علوم پزشکی شیراز، شیراز، ایران
4 استادیار، گروه آسیبشناسی، دانشکدهی پزشکی شیراز و مرکز پیوند شیراز، بیمارستان ابوعلی سینا، دانشگاه علوم پزشکی شیراز، شیراز، ایران
چکیده
تازه های تحقیق
مریم بهبودی پور: Google Scholar
ندا سلیمانی: Google Scholar
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background: As an opportunistic pathogen, Pseudomonas aeruginosa is one of the most important causes of hospital infections. Its high pathogenicity can be attributed to multiple virulence factors. Identifying pathogenic factors can help design effective treatments. The present study was conducted with the aim of investigating the pattern of antibiotic resistance and toxA virulence gene in clinical isolates of P. aeruginosa collected from surgical ward patients.
Methods: 50 isolates of P. aeruginosa were collected from different samples and identified using conventional biochemical tests. Antimicrobial sensitivity was tested using the disk diffusion method. Multiple antibiotic resistance index (MAR) was calculated. DNA was extracted using the boiling method, and PCR was performed to identify toxA virulence gene.
Findings: Among the 50 isolates, (56%) were obtained from men and (44%) from women. Patients were in the age range of 1-89 years. Most bacteria isolation was performed in the surgical unit (26%), intensive care unit (24%), and emergency unit (18%). Isolates exhibited high sensitivity to amikacin (62%) and cefepime (60%) antibiotics. The highest rate of resistance to imipenem (46%) was observed. (44%) of the isolates had multidrug resistance (MDR). MAR index ranged from 0 to 1. Mean MAR index of isolates was 0/38. Frequency of the toxA virulence gene (96%) was determined.
Conclusion: This study highlights the high prevalence of the virulence factor gene toxA and its importance in the pathogenicity of P. aeruginosa. Identification of virulence factors is crucial for effective infection control measures and development of targeted treatment strategies.
کلیدواژهها [English]