Hyperpolarized 13C NMR observation of lactate kinetics in skeletal muscle
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![Fig. 1. Time-averaged infusion. Each spectrum is normalized to the corresponding [1-13C signals from rat skeletal muscle after injection of 40 mmol l−1 hyperpolarized [1-13C]lactate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/2.612.130.487.569.691/averaged-infusion-spectrum-normalized-corresponding-skeletal-injection-hyperpolarized.webp)
![Table 1. Dynamics of [1-13C]lactate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/3.612.47.571.67.269/table-dynamics-of-c-lactate.webp)
![Fig. 3. Time-averaged 13C signals from ratskeletal muscle after injection of 80 mmol l−1hyperpolarized [2-13C]pyruvate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/4.612.48.399.593.731/time-averaged-signals-ratskeletal-muscle-injection-hyperpolarized-pyruvate.webp)
![Table 2. Dynamics of [2-13C]pyruvate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/5.612.46.566.67.382/table-dynamics-of-c-pyruvate.webp)
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![Fig. 6. Different metabolite enzyme activity ratios in rat skeletal muscle after the injection of 40 mmol l−difference between pre-/post-DCA measurements (*1 hyperpolarized [1-13C]lactate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/6.612.74.541.54.286/different-metabolite-activity-skeletal-injection-difference-measurements-hyperpolarized.webp)
![Fig. 7. Different metabolite enzyme activity ratios in rat skeletal muscle after the injection of 80 mmol l−1 hyperpolarized [2-13C]pyruvate](https://thumb-us.123doks.com/thumbv2/123dok_us/1075697.623573/7.612.68.553.56.194/different-metabolite-enzyme-activity-skeletal-injection-hyperpolarized-pyruvate.webp)
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