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Iranian Journal of Microbiology، جلد ۸، شماره ۴، صفحات ۲۵۷-۲۶۲
عنوان فارسی
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عنوان انگلیسی Plasma surface modificationas a new approach to protect urinary catheteragainst Escherichia coli biofilmformation
چکیده انگلیسی مقاله Background and Objectives: Biomaterials are widely used in medical devices such as urinary catheters. One of the main problems associated with long term using of the urinary catheters is biofilm formation on their surfaces. Many techniques have been presented to reduce the biofilm formation. One of the most revolutionary techniques allowing such surface fictionalization is plasma surface modification. Materials and Methods: In this study, a glow discharge plasma (GDP) effect on Escherichia coli biofilm formation on the surface of urinary catheter in the pressure of 1.6 × 10-1 Torr of nitrogen, discharge voltage about 1.2 kV and current of 150 mA for 20 minutes has been investigated. Crystal violet binding assay and sonication method were performed in order to evaluate the amount of biofilm formation on tested biomaterials. Results: Characterization of modified surfaces by Attenuated Total Reflectance Fourier Transform Infrared Spectrometry (ATR-FTIR) and atomic force microscopy (AFM) revealed a noticeable change in hydrophobicity and roughness of catheter surfaces achieved by nitrogen plasma. The results of crystal violet binding assay and sonication method showed that the amount of biofilm formation on modified surface was about 86% less than the pristine sample. Conclusion: Plasma surface modification can reduce the risk of infections in patients with long-term use of urinary catheters.
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نویسندگان مقاله لیلا taheran | leila taheran
department of biology, faculty of natural sciences, university of tabriz, tabriz-iran

سازمان اصلی تایید شده: دانشگاه تبریز (Tabriz university)

غلامرضا زرینی | gholamreza zarrini
department of biology, faculty of natural sciences, university of tabriz, tabriz-iran

سازمان اصلی تایید شده: دانشگاه تبریز (Tabriz university)

سیروس خرم | sirous khorram
research institute for applied physics and astronomy, university of tabriz, tabriz-iran

سازمان اصلی تایید شده: دانشگاه تبریز (Tabriz university)

محمد صادق ذاکرحمیدی | mohammad sadegh zakerhamidi
research institute for applied physics and astronomy, university of tabriz, tabriz-iran

سازمان اصلی تایید شده: دانشگاه تبریز (Tabriz university)

نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/795
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