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Table 1 Metabolic Changes That May Affect Fatigue in ME/CFS Patients

From: Oxaloacetate Treatment For Mental And Physical Fatigue In Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long-COVID fatigue patients: a non-randomized controlled clinical trial

Metabolic change

Effect on ME/CFS patient

Normalization by oxaloacetate

Warburg Effect

Increased lactate production

Reduction in lactate production via inhibition of lactate dehydrogenase in the cytosol

Decrease in NAD + /NADH ratio

Increase ROS production

Reset of NAD + /NADH ratio and quenching of ROS by antioxidant Oxaloacetate

Increased NF-kB movement to nucleus

Activation of chronic inflammation

Reset of inflammation pathway to normal by Lowering NF-kB translocation to nucleus

Mitochondrial damage

Reduced ability to process glucose

Increased number of mitochondria to produce energy via PGC1-alpha increase

Reduced AMPK activation

Reduced cellular glucose uptake

Increase in glucose uptake via AMPK activation and more glucose fuel available for the patient

Increased neurological ROS production

Damage from free radicals

Oxaloacetate is a highly effective antioxidant