In vivo electron spin resonance assessment of decay constant of nitroxyl radical in selenium-deficient rat

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Published on: August 18, 2012

K Matsumoto1, K Endo, H Utsumi

  • 1Department of Physical Chemistry, Showa Pharmaceutical University, Machida, Tokyo Japan. knmatsu@ac.shoyaku.ac.jp

Biological & Pharmaceutical Bulletin
|May 24, 2000
PubMed

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Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...