Journal
JOURNAL OF MAGNETIC RESONANCE
Volume 237, Issue -, Pages 73-78Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmr.2013.09.012
Keywords
SABRE; Parahydrogen; Hyperpolarization; Pyrazinamide; Isoniazid; Mycobacterium Tuberculosis
Funding
- University of York
- MRC
- EPSRC [EP/G009546/1]
- Wellcome Trust [WT092506MA, WT098335MA]
- Engineering and Physical Sciences Research Council [EP/G009546/1] Funding Source: researchfish
- EPSRC [EP/G009546/1] Funding Source: UKRI
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Hyperpolarization produces nuclear spin polarization that is several orders of magnitude larger than that achieved at thermal equilibrium thus providing extraordinary contrast and sensitivity. As a parahydrogen induced polarization (PHIP) technique that does not require chemical modification of the substrate to polarize, Signal Amplification by Reversible Exchange (SABRE) has attracted a lot of attention. Using a prototype parahydrogen polarizer, we polarize two drugs used in the treatment of tuberculosis, namely pyrazinamide and isoniazid. We examine this approach in four solvents, methanol-d(4), methanol, ethanol and DMSO and optimize the polarization transfer magnetic field strength, the temperature as well as intensity and duration of hydrogen bubbling to achieve the best overall signal enhancement and hence hyperpolarization level. (C) 2013 Elsevier Inc. All rights reserved.
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