Publication detail

Electrochemical Behaviour of Apoferritin Encapsulating of Silver(I) Ions and Its Application for Treatment of Staphylococcus aureus

FIALOVÁ, D. HYNEK, D. KOPEL, P. BEZDĚKOVÁ, A. SOCHOR, J. KŘÍŽKOVÁ, S. ADAM, V. TRNKOVÁ, L. HUBÁLEK, J. BABULA, P. PROVAZNÍK, I. VRBA, R. KIZEK, R.

Original Title

Electrochemical Behaviour of Apoferritin Encapsulating of Silver(I) Ions and Its Application for Treatment of Staphylococcus aureus

English Title

Electrochemical Behaviour of Apoferritin Encapsulating of Silver(I) Ions and Its Application for Treatment of Staphylococcus aureus

Type

journal article in Web of Science

Language

en

Original Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) is responsible for several difficult-to-treat infections in humans. Therefore, it is not surprising that other ways how to treat these bacteria are looked for. Silver(I) ions and silver nanoparticles exhibited the highest antimicrobial activity against MRSA but their transporting to the place of needs and in situ determination is an issue. The aim of this work was electrochemical determination of silver(I) ions using four types of modified carbon paste electrodes (CPEs) with different content of carbon nanoparticles. CPE made from expanded carbon was the most sensitive one. Therefore, we optimized the experimental conditions as time of accumulation 60 s, deposition potential 0.5 V and 0.2 M acetate buffer, pH = 5.0 to obtain detection limit (3 S/N) of 5 nM for silver(I) ions. Further, we studied the encapsulation of silver(I) ions into apoferritin as a possible way for transportation of these ions. Primarily we optimized the encapsulation conditions to prepare the most stable complex, which was subsequently utilized for treatment of S. aureus. Based on the results obtained it can be concluded that silver(I) ions remain enclosed in the apoferritin structure until decomposition of apoferritin by bacterial enzymatic apparatus occurs.

English abstract

Methicillin-resistant Staphylococcus aureus (MRSA) is responsible for several difficult-to-treat infections in humans. Therefore, it is not surprising that other ways how to treat these bacteria are looked for. Silver(I) ions and silver nanoparticles exhibited the highest antimicrobial activity against MRSA but their transporting to the place of needs and in situ determination is an issue. The aim of this work was electrochemical determination of silver(I) ions using four types of modified carbon paste electrodes (CPEs) with different content of carbon nanoparticles. CPE made from expanded carbon was the most sensitive one. Therefore, we optimized the experimental conditions as time of accumulation 60 s, deposition potential 0.5 V and 0.2 M acetate buffer, pH = 5.0 to obtain detection limit (3 S/N) of 5 nM for silver(I) ions. Further, we studied the encapsulation of silver(I) ions into apoferritin as a possible way for transportation of these ions. Primarily we optimized the encapsulation conditions to prepare the most stable complex, which was subsequently utilized for treatment of S. aureus. Based on the results obtained it can be concluded that silver(I) ions remain enclosed in the apoferritin structure until decomposition of apoferritin by bacterial enzymatic apparatus occurs.

Keywords

electrochemical detection; silver; nanomaterial; nanomedicine

RIV year

2012

Released

01.07.2012

Pages from

6378

Pages to

6395

Pages count

18

Documents

BibTex


@article{BUT92844,
  author="Dana {Fialová} and David {Hynek} and Pavel {Kopel} and Andrea {Bezděková} and Jiří {Sochor} and Soňa {Křížková} and Vojtěch {Adam} and Libuše {Trnková} and Jaromír {Hubálek} and Petr {Babula} and Ivo {Provazník} and Radimír {Vrba} and René {Kizek}",
  title="Electrochemical Behaviour of Apoferritin Encapsulating of Silver(I) Ions and Its Application for Treatment of Staphylococcus aureus",
  annote="Methicillin-resistant Staphylococcus aureus (MRSA) is responsible for several difficult-to-treat infections in humans. Therefore, it is not surprising that other ways how to treat these bacteria are looked for. Silver(I) ions and silver nanoparticles exhibited the highest antimicrobial activity against MRSA but their transporting to the place of needs and in situ determination is an issue. The aim of this work was electrochemical determination of silver(I) ions using four types of modified carbon paste electrodes (CPEs) with different content of carbon nanoparticles. CPE made from expanded carbon was the most sensitive one. Therefore, we optimized the experimental conditions as time of accumulation 60 s, deposition potential 0.5 V and 0.2 M acetate buffer, pH = 5.0 to obtain detection limit (3 S/N) of 5 nM for silver(I) ions. Further, we studied the encapsulation of silver(I) ions into apoferritin as a possible way for transportation of these ions. Primarily we optimized the encapsulation conditions to prepare the most stable complex, which was subsequently utilized for treatment of S. aureus. Based on the results obtained it can be concluded that silver(I) ions remain enclosed in the apoferritin structure until decomposition of apoferritin by bacterial enzymatic apparatus occurs.",
  chapter="92844",
  number="7",
  volume="7",
  year="2012",
  month="july",
  pages="6378--6395",
  type="journal article in Web of Science"
}