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:: دوره 4، شماره 4 - ( مجموعه مقالات پاتولوژی فک و دهان 1390 ) ::
جلد 4 شماره 4 صفحات 0-0 برگشت به فهرست نسخه ها
Electrically conductive bacterial nanowires in bisphosphonate-related osteonecrosis of the jaw biofilms
چکیده:   (2035 مشاهده)

 Objective

  Bacterial biofilms play a role in the pathogenesis of bisphosphonate-related osteonecrosis of the jaw (BRONJ). The purpose of this preliminary study was to test the hypothesis that the extracellular filaments observed in biofilms associated with BRONJ contain electrically conductive nanowires.

 Study Design

  Bone samples of patients affected by BRONJ were evaluated for conductive nanowires by scanning electron microscopy (SEM) and conductive probe atomic force microscopy (CP-AFM). We created nanofabricated electrodes to measure electrical transport along putative nanowires.

 Results

 SEM revealed large-scale multispecies biofilms containing numerous filamentous structures throughout necrotic bone. CP-AFM analysis revealed that these structures were electrically conductive nanowires with resistivities on the order of 20 Ω·cm. Nanofabricated electrodes spaced along the nanowires confirmed their ability to transfer electrons over micron-scale lengths.

 Conclusions

 Electrically conductive bacterial nanowires to date have been described only in environmental isolates. This study shows for the first time that these nanowires can also be found in clinically relevant biofilm-mediated diseases, such as BRONJ, and may represent an important target for therapy.


 Source: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology

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نوع مطالعه: پژوهشي | موضوع مقاله: پاتولوزی دهان، فک و صورت
دریافت: 1392/5/13 | انتشار: 1390/10/25
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Electrically conductive bacterial nanowires in bisphosphonate-related osteonecrosis of the jaw biofilms. 1. 1390; 4 (4)

URL: http://idai.ir/article-1-1526-fa.html



بازنشر اطلاعات
Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.
دوره 4، شماره 4 - ( مجموعه مقالات پاتولوژی فک و دهان 1390 ) برگشت به فهرست نسخه ها
جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

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