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Carbon blacks as EPR sensors for localized measurements of tissue oxygenation
Magnetic resonance in medicine, 2004-06, Vol.51 (6), p.1272-1278
Lan, Minbo
Beghein, Nelson
Charlier, Nicolas
Gallez, Bernard
2004
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Lan, Minbo
Beghein, Nelson
Charlier, Nicolas
Gallez, Bernard
Titel
Carbon blacks as EPR sensors for localized measurements of tissue oxygenation
Ist Teil von
Magnetic resonance in medicine, 2004-06, Vol.51 (6), p.1272-1278
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2004
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
New electron paramagnetic resonance (EPR) oximetry probes were identified in the class of carbon black materials. These compounds exhibit very high oxygen sensitivity and favorable EPR characteristics for biological applications. At low pO2, the linewidth is particularly sensitive to changes in oxygen tension (sensitivity of 750 mG/mmHg). The application of the probes for oximetry was demonstrated in vivo: the pO2 was measured in muscle in which the blood flow was temporarily restricted as well as in tumor‐bearing mice during a carbogen breathing challenge. The responsiveness to pO2 was stable in muscle for at least 3 months. No toxicity was observed using these materials in cellular experiments and in histological studies performed 2, 7, and 28 days after implantation. In view of their EPR characteristics (high sensitivity) as well as the well‐characterized production procedure that make them available on a large scale, these probes can be considered as very promising tools for future developments in EPR oximetry. Magn Reson Med 51:1272–1278, 2004. © 2004 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0740-3194
eISSN: 1522-2594
DOI: 10.1002/mrm.20077
Titel-ID: cdi_proquest_miscellaneous_17515137
Format
–
Schlagworte
Animals
,
Biocompatible Materials
,
Carbon
,
Electron Spin Resonance Spectroscopy
,
EPR oximetry
,
free radicals
,
HeLa Cells
,
Humans
,
In Vitro Techniques
,
Male
,
Mice
,
Muscle, Skeletal - chemistry
,
Oxygen - analysis
,
oxygenation
,
vivo
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