Hyperpolarized 13 C MR metabolic imaging can detect neuroinflammation in vivo in a multiple sclerosis murine model
Proceedings of the National Academy of Sciences of the United States of America(2017)
摘要
Significance Cells from the innate immune system, namely microglia and macrophages (mononuclear phagocytes, MPs), play a central role in the progression of neurological disorders such as multiple sclerosis. Such cells can contribute to lesion formations (proinflammatory) or participate in remyelinating processes (neuroprotective). When differentiated to a proinflammatory phenotype, MPs experience metabolic reprogramming leading to increased glycolysis and production of lactate. In this study we showed that a new metabolic imaging method, namely 13 C magnetic resonance spectroscopic imaging (MRSI) of hyperpolarized pyruvate, can detect increased lactate production from proinflammatory MPs, a mechanism mediated by pyruvate dehydrogenase kinase 1 upregulation, in a preclinical model of multiple sclerosis. These findings validate the potential of 13 C MRSI of hyperpolarized pyruvate for in vivo detection of neuroinflammation.
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关键词
multiple sclerosis murine model,multiple sclerosis,neuroinflammation,imaging
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