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17 O MRS assesses the effect of mild hypothermia on oxygen consumption rate in tumors
Author(s) -
Neveu MarieAline,
Joudiou Nicolas,
De Preter Géraldine,
Dehoux JeanPaul,
Jordan Bénédicte F.,
Gallez Bernard
Publication year - 2017
Publication title -
nmr in biomedicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.278
H-Index - 114
eISSN - 1099-1492
pISSN - 0952-3480
DOI - 10.1002/nbm.3726
Subject(s) - oxygen , fibrosarcoma , chemistry , hypothermia , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , metabolism , pathology , medicine , biochemistry , physics , organic chemistry
Although oxygen consumption is a key factor in metabolic phenotyping, its assessment in tumors remains critical, as current technologies generally display poor specificity. The objectives of this study were to explore the feasibility of direct 17 O nuclear magnetic resonance (NMR) spectroscopy to assess oxygen metabolism in tumors and its modulations. To investigate the impact of hypometabolism induction in the murine fibrosarcoma FSAII tumor model, we monitored the oxygen consumption of normothermic (37°C) and hypothermic (32°C) tumor‐bearing mice. Hypothermic animals showed an increase in tumor p O 2 (measured by electron paramagnetic resonance oximetry) contrary to normothermic animals. This was related to a decrease in oxygen consumption rate (assessed using 17 O magnetic resonance spectroscopy (MRS) after the inhalation of 17 O 2 ‐enriched gas). This study highlights the ability of direct 17 O MRS to measure oxygen metabolism in tumors and modulations of tumor oxygen consumption rate.