Dissolution of Silver Nanowires and Nanospheres Dictates Their Toxicity to Escherichia coli
المؤلفون المشاركون
Visnapuu, Meeri
Joost, Urmas
Juganson, Katre
Künnis-Beres, Kai
Kahru, Anne
Kisand, Vambola
Ivask, Angela
المصدر
العدد
المجلد 2013، العدد 2013 (31 ديسمبر/كانون الأول 2013)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2013-08-20
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
Silver nanoparticles are extensively used in antibacterial applications.
However, the mechanisms of their antibacterial action are not yet fully explored.
We studied the solubility-driven toxicity of 100×6100 nm (mean primary diameter × length) silver nanowires (NWs) to recombinant bioluminescent Escherichia coli as a target representative of enteric pathogens.
The bacteria were exposed to silver nanostructures in water to exclude the speciation-driven alterations.
Spherical silver nanoparticles (83 nm mean primary size) were used as a control for the effect of NPs shape.
Toxicity of both Ag NWs and spheres to E.
coli was observed at similar nominal concentrations: the 4h EC50 values, calculated on the basis of inhibition of bacterial bioluminescence, were 0.42 ± 0.06 and 0.68 ± 0.01 mg Ag/L, respectively.
Dissolution and bioavailability of Ag from NWs and nanospheres, analyzed with AAS or Ag-sensor bacteria, respectively, suggested that the toxic effects were caused by solubilized Ag+ ions.
Moreover, the antibacterial activities of Ag NWs suspension and its ultracentrifuged particle-free supernatant were equal.
The latter indicated that the toxic effects of ~80–100 nm Ag nanostructures to Escherichia coli were solely dependent on their dissolution and no shape-induced/related effects were observed.
Yet, additional nanospecific effects could come into play in case of smaller nanosilver particles.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Visnapuu, Meeri& Joost, Urmas& Juganson, Katre& Künnis-Beres, Kai& Kahru, Anne& Kisand, Vambola…[et al.]. 2013. Dissolution of Silver Nanowires and Nanospheres Dictates Their Toxicity to Escherichia coli. BioMed Research International،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1005192
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Visnapuu, Meeri…[et al.]. Dissolution of Silver Nanowires and Nanospheres Dictates Their Toxicity to Escherichia coli. BioMed Research International No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-1005192
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Visnapuu, Meeri& Joost, Urmas& Juganson, Katre& Künnis-Beres, Kai& Kahru, Anne& Kisand, Vambola…[et al.]. Dissolution of Silver Nanowires and Nanospheres Dictates Their Toxicity to Escherichia coli. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1005192
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1005192
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر