بررسی اثر ضدمیکروبی نانو ذرات اکسیدآهن اصلاح شده با آلژینات بر بیوفیلم باکتری سودوموناس آئروژینوزا

نوع مقاله : بیماری ها

نویسندگان

1 گروه ژنتیک و بیوتکنولوژی، دانشکده علوم زیستی، واحد ورامین- پیشوا، دانشگاه آزاد اسلامی، ورامین، ایران

2 گروه بیوشیمی بیوفیزیک، دانشکده علوم زیستی، واحد ورامین- پیشوا، دانشگاه آزاد اسلامی، ورامین، ایران

چکیده

سودوموناس آئروژینوزا یکی از عوامل مهم عفونت ­های بیمارستانی است و متاسفانه مقاومت آنتی­ بیوتیکی در این باکتری به ­واسطه وجود ژن­ های مقاومت، حضور پمپ ­های افلاکس و تشکیل بیوفیلم بسیار بالا می ­باشد. از اهداف این مطالعه بررسی اثرات نانوذره اکسید آهن اصلاح شده با آلژینات در برابر بیوفیلم سودوموناس آئروژینوزا می­ باشد. در این مطالعه نانوذره اکسید آهن اصلاح شده با پوشش آلژینات به ­روش هم رسوبی سنتز شد. ویژگی های ساختاری نانوذرات توسط روش ­های DLS، FT-IR، XRD و SEM تعیین شد. اثر ضدمیکروبی نانوذرات توسط بررسی حداقل غلظت مهاری به ­روش میکرودایلوشن براث پس از ارزیابی شدت بیوفیلم سویه ­های بالینی به ­روش میکروتیترپلیت ارزیابی گردید. نانوذره اکسید آهن با پوشش آلژینات در غلظت­ های 0/256 تا 90 میکروگرم در میلی ­لیتر توانست تشکیل بیوفیلم را در سویه ­های بالینی سودوموناس مهار کند. مطالعه حاضر روشن نمود، می ­توان از نانوذرات اکسید آهن اصلاح شده با آلژینات به ­عنوان یک عامل ضدباکتریایی جهت مهار تشکیل بیوفیلم سودوموناس آئروژینوزا استفاده نمود.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of the Antibacterial Effects of Iron Oxide-Alginate Nanoparticles on Formation of Pseudomonas aeruginosa Biofilm

نویسندگان [English]

  • Alaleh Jaberi Jahromi 1
  • Shohreh Zare Karizi 1
  • Raheleh Safaei Javan 2
1 Department of Genetics and Biotechnology, Faculty of Biological Science, Varamin- Pishva Branch, Islamic Azad University, Varamin, Iran
2 Department of Biochemistry and Biophysics, Faculty of Biological Science, Varamin- Pishva Branch, Islamic Azad University, Varamin, Iran
چکیده [English]

Pseudomonas aeruginosa, is one of the important causes of nosocomial infections. Unfortunately, this bacterium has very high level of antibiotic resistance due to the presence of resistance genes, the efflux pumps and the formation of biofilms. The aim of this study was to investigate the inhibitory effect of magnetite-alginate nanoparticles (M-AlgNPs) on P. aeruginosa biofilm. M-AlgNPs were synthesized utilizing a coprecipitation method. The structural properties of the synthesized nanoparticles were investigated by using Fourier Transform Infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM), Dynamic Light Scattering (DLS) and X-ray Diffraction (XRD). Antibacterial activity was tested by determining the minimum inhibitory concentration (MIC) using microdilution method and biofilm formation was measured using microtiter plate tests. M-AlgNPs at a concentration of 0.256 to 90 µg/ml inhibited biofilm formation in clinical strains of Pseudomonas. The present investigation revealed that application of M-AlgNPs as antibacterial agents may be effective in inhibiting biofilm formation of P. aeruginosa.

کلیدواژه‌ها [English]

  • Pseudomonas aeruginosa
  • Biofilm
  • Nanoparticles
  • Antibiotic resistant
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