Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Nina Angrisani
  • Franziska Foth
  • Manfred Kietzmann
  • Stephan Schumacher
  • Gian L. Angrisani
  • Anne Christel
  • Peter Behrens
  • Janin Reifenrath

Externe Organisationen

  • Stiftung Tierärztliche Hochschule Hannover
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer34
FachzeitschriftJournal of nanobiotechnology
Jahrgang11
Ausgabenummer1
PublikationsstatusVeröffentlicht - 10 Okt. 2013

Abstract

Background: In orthopaedic surgery, accumulation of agents such as anti-infectives in the bone as target tissue is difficult. The use of magnetic nanoparticles (MNPs) as carriers principally enables their accumulation via an externally applied magnetic field. Magnetizable implants are principally able to increase the strength of an externally applied magnetic field to reach also deep-seated parts in the body. Therefore, the integration of bone-addressed therapeutics in MNPs and their accumulation at a magnetic orthopaedic implant could improve the treatment of implant related infections. In this study a martensitic steel platelet as implant placeholder was used to examine its accumulation and retention capacity of MNPs in an in vitro experimental set up considering different experimental frame conditions as magnet quantity and distance to each other, implant thickness and flow velocity.Results: The magnetic field strength increased to approximately 112% when a martensitic stainless steel platelet was located between the magnet poles. Therewith a significantly higher amount of magnetic nanoparticles could be accumulated in the area of the platelet compared to the sole magnetic field. During flushing of the tube system mimicking the in vivo blood flow, the magnetized platelet was able to retain a higher amount of MNPs without an external magnetic field compared to the set up with no mounted platelet during flushing of the system. Generally, a higher flow velocity led to lower amounts of accumulated MNPs. A higher quantity of magnets and a lower distance between magnets led to a higher magnetic field strength. Albeit not significantly the magnetic field strength tended to increase with thicker platelets.Conclusion: A martensitic steel platelet significantly improved the attachment of magnetic nanoparticles in an in vitro flow system and therewith indicates the potential of magnetic implant materials in orthopaedic surgery. The use of a remanent magnetic implant material could improve the efficiency of capturing MNPs especially when the external magnetic field is turned off thus facilitating and prolonging the effect. In this way higher drug levels in the target area might be attained resulting in lower inconveniences for the patient.

ASJC Scopus Sachgebiete

Zitieren

Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications. / Angrisani, Nina; Foth, Franziska; Kietzmann, Manfred et al.
in: Journal of nanobiotechnology, Jahrgang 11, Nr. 1, 34, 10.10.2013.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Angrisani, N, Foth, F, Kietzmann, M, Schumacher, S, Angrisani, GL, Christel, A, Behrens, P & Reifenrath, J 2013, 'Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications', Journal of nanobiotechnology, Jg. 11, Nr. 1, 34. https://doi.org/10.1186/1477-3155-11-34
Angrisani, N., Foth, F., Kietzmann, M., Schumacher, S., Angrisani, G. L., Christel, A., Behrens, P., & Reifenrath, J. (2013). Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications. Journal of nanobiotechnology, 11(1), Artikel 34. https://doi.org/10.1186/1477-3155-11-34
Angrisani N, Foth F, Kietzmann M, Schumacher S, Angrisani GL, Christel A et al. Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications. Journal of nanobiotechnology. 2013 Okt 10;11(1):34. doi: 10.1186/1477-3155-11-34
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abstract = "Background: In orthopaedic surgery, accumulation of agents such as anti-infectives in the bone as target tissue is difficult. The use of magnetic nanoparticles (MNPs) as carriers principally enables their accumulation via an externally applied magnetic field. Magnetizable implants are principally able to increase the strength of an externally applied magnetic field to reach also deep-seated parts in the body. Therefore, the integration of bone-addressed therapeutics in MNPs and their accumulation at a magnetic orthopaedic implant could improve the treatment of implant related infections. In this study a martensitic steel platelet as implant placeholder was used to examine its accumulation and retention capacity of MNPs in an in vitro experimental set up considering different experimental frame conditions as magnet quantity and distance to each other, implant thickness and flow velocity.Results: The magnetic field strength increased to approximately 112% when a martensitic stainless steel platelet was located between the magnet poles. Therewith a significantly higher amount of magnetic nanoparticles could be accumulated in the area of the platelet compared to the sole magnetic field. During flushing of the tube system mimicking the in vivo blood flow, the magnetized platelet was able to retain a higher amount of MNPs without an external magnetic field compared to the set up with no mounted platelet during flushing of the system. Generally, a higher flow velocity led to lower amounts of accumulated MNPs. A higher quantity of magnets and a lower distance between magnets led to a higher magnetic field strength. Albeit not significantly the magnetic field strength tended to increase with thicker platelets.Conclusion: A martensitic steel platelet significantly improved the attachment of magnetic nanoparticles in an in vitro flow system and therewith indicates the potential of magnetic implant materials in orthopaedic surgery. The use of a remanent magnetic implant material could improve the efficiency of capturing MNPs especially when the external magnetic field is turned off thus facilitating and prolonging the effect. In this way higher drug levels in the target area might be attained resulting in lower inconveniences for the patient.",
keywords = "Implant directed magnetic drug targeting, In vitro, Magnetic field strength, Martensitic steel",
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TY - JOUR

T1 - Increased accumulation of magnetic nanoparticles by magnetizable implant materials for the treatment of implant-associated complications

AU - Angrisani, Nina

AU - Foth, Franziska

AU - Kietzmann, Manfred

AU - Schumacher, Stephan

AU - Angrisani, Gian L.

AU - Christel, Anne

AU - Behrens, Peter

AU - Reifenrath, Janin

PY - 2013/10/10

Y1 - 2013/10/10

N2 - Background: In orthopaedic surgery, accumulation of agents such as anti-infectives in the bone as target tissue is difficult. The use of magnetic nanoparticles (MNPs) as carriers principally enables their accumulation via an externally applied magnetic field. Magnetizable implants are principally able to increase the strength of an externally applied magnetic field to reach also deep-seated parts in the body. Therefore, the integration of bone-addressed therapeutics in MNPs and their accumulation at a magnetic orthopaedic implant could improve the treatment of implant related infections. In this study a martensitic steel platelet as implant placeholder was used to examine its accumulation and retention capacity of MNPs in an in vitro experimental set up considering different experimental frame conditions as magnet quantity and distance to each other, implant thickness and flow velocity.Results: The magnetic field strength increased to approximately 112% when a martensitic stainless steel platelet was located between the magnet poles. Therewith a significantly higher amount of magnetic nanoparticles could be accumulated in the area of the platelet compared to the sole magnetic field. During flushing of the tube system mimicking the in vivo blood flow, the magnetized platelet was able to retain a higher amount of MNPs without an external magnetic field compared to the set up with no mounted platelet during flushing of the system. Generally, a higher flow velocity led to lower amounts of accumulated MNPs. A higher quantity of magnets and a lower distance between magnets led to a higher magnetic field strength. Albeit not significantly the magnetic field strength tended to increase with thicker platelets.Conclusion: A martensitic steel platelet significantly improved the attachment of magnetic nanoparticles in an in vitro flow system and therewith indicates the potential of magnetic implant materials in orthopaedic surgery. The use of a remanent magnetic implant material could improve the efficiency of capturing MNPs especially when the external magnetic field is turned off thus facilitating and prolonging the effect. In this way higher drug levels in the target area might be attained resulting in lower inconveniences for the patient.

AB - Background: In orthopaedic surgery, accumulation of agents such as anti-infectives in the bone as target tissue is difficult. The use of magnetic nanoparticles (MNPs) as carriers principally enables their accumulation via an externally applied magnetic field. Magnetizable implants are principally able to increase the strength of an externally applied magnetic field to reach also deep-seated parts in the body. Therefore, the integration of bone-addressed therapeutics in MNPs and their accumulation at a magnetic orthopaedic implant could improve the treatment of implant related infections. In this study a martensitic steel platelet as implant placeholder was used to examine its accumulation and retention capacity of MNPs in an in vitro experimental set up considering different experimental frame conditions as magnet quantity and distance to each other, implant thickness and flow velocity.Results: The magnetic field strength increased to approximately 112% when a martensitic stainless steel platelet was located between the magnet poles. Therewith a significantly higher amount of magnetic nanoparticles could be accumulated in the area of the platelet compared to the sole magnetic field. During flushing of the tube system mimicking the in vivo blood flow, the magnetized platelet was able to retain a higher amount of MNPs without an external magnetic field compared to the set up with no mounted platelet during flushing of the system. Generally, a higher flow velocity led to lower amounts of accumulated MNPs. A higher quantity of magnets and a lower distance between magnets led to a higher magnetic field strength. Albeit not significantly the magnetic field strength tended to increase with thicker platelets.Conclusion: A martensitic steel platelet significantly improved the attachment of magnetic nanoparticles in an in vitro flow system and therewith indicates the potential of magnetic implant materials in orthopaedic surgery. The use of a remanent magnetic implant material could improve the efficiency of capturing MNPs especially when the external magnetic field is turned off thus facilitating and prolonging the effect. In this way higher drug levels in the target area might be attained resulting in lower inconveniences for the patient.

KW - Implant directed magnetic drug targeting

KW - In vitro

KW - Magnetic field strength

KW - Martensitic steel

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U2 - 10.1186/1477-3155-11-34

DO - 10.1186/1477-3155-11-34

M3 - Article

C2 - 24112871

AN - SCOPUS:84885131422

VL - 11

JO - Journal of nanobiotechnology

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