Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex

<p>The kinetically stable heptadentate gadolinium complex Gd.pDO3A (<strong>1.Gd</strong>) demonstrates significant&nbsp;<small><sup>31</sup></small>P nuclear magnetic resonance (NMR) relaxation enhancement of biologically relevant phosphate species; ade...

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Main Authors: Tear, LR, Maguire, ML, Tropiano, M, Yao, K, Farrer, NJ, Faulkner, S, Schneider, JE
Format: Journal article
Language:English
Published: Royal Society of Chemistry 2020
_version_ 1797102407946076160
author Tear, LR
Maguire, ML
Tropiano, M
Yao, K
Farrer, NJ
Faulkner, S
Schneider, JE
author_facet Tear, LR
Maguire, ML
Tropiano, M
Yao, K
Farrer, NJ
Faulkner, S
Schneider, JE
author_sort Tear, LR
collection OXFORD
description <p>The kinetically stable heptadentate gadolinium complex Gd.pDO3A (<strong>1.Gd</strong>) demonstrates significant&nbsp;<small><sup>31</sup></small>P nuclear magnetic resonance (NMR) relaxation enhancement of biologically relevant phosphate species; adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate. Gd.pDO3A (<strong>1.Gd</strong>) binds these species in fast exchange, enabling the relaxation of the bulk phosphate species in solution. This gives rise to&nbsp;<small><sup>31</sup></small>P relaxation enhancements up to 250-fold higher than those observed for&nbsp;<small><sup>31</sup></small>P relaxation enhancements with the commercial MRI contrast agent Gd.DOTA (DOTAREM),&nbsp;<strong>2</strong>. Gd.pDO3A-like complexes may have potential applications as&nbsp;<small><sup>31</sup></small>P magnetic resonance contrast agents, since shortening the&nbsp;<em>T</em><small><sub>1</sub></small>&nbsp;relaxation time of phosphate species would reduce the time needed to acquire&nbsp;<small><sup>31</sup></small>P-MR spectra.</p>
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spelling oxford-uuid:edba68fc-aafa-4a8b-8252-108bec891b332022-03-27T11:27:19ZEnhancing 31P NMR relaxation rates with a kinetically inert gadolinium complexJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:edba68fc-aafa-4a8b-8252-108bec891b33EnglishSymplectic ElementsRoyal Society of Chemistry2020Tear, LRMaguire, MLTropiano, MYao, KFarrer, NJFaulkner, SSchneider, JE<p>The kinetically stable heptadentate gadolinium complex Gd.pDO3A (<strong>1.Gd</strong>) demonstrates significant&nbsp;<small><sup>31</sup></small>P nuclear magnetic resonance (NMR) relaxation enhancement of biologically relevant phosphate species; adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate. Gd.pDO3A (<strong>1.Gd</strong>) binds these species in fast exchange, enabling the relaxation of the bulk phosphate species in solution. This gives rise to&nbsp;<small><sup>31</sup></small>P relaxation enhancements up to 250-fold higher than those observed for&nbsp;<small><sup>31</sup></small>P relaxation enhancements with the commercial MRI contrast agent Gd.DOTA (DOTAREM),&nbsp;<strong>2</strong>. Gd.pDO3A-like complexes may have potential applications as&nbsp;<small><sup>31</sup></small>P magnetic resonance contrast agents, since shortening the&nbsp;<em>T</em><small><sub>1</sub></small>&nbsp;relaxation time of phosphate species would reduce the time needed to acquire&nbsp;<small><sup>31</sup></small>P-MR spectra.</p>
spellingShingle Tear, LR
Maguire, ML
Tropiano, M
Yao, K
Farrer, NJ
Faulkner, S
Schneider, JE
Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title_full Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title_fullStr Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title_full_unstemmed Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title_short Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex
title_sort enhancing 31p nmr relaxation rates with a kinetically inert gadolinium complex
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