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A rare metabolic disorder for which two forms have been described. Lack of activity of the erythrocyte isoform of adenosine monophosphate (AMP) deaminase has been described in subjects with low plasma uric acid levels without obvious clinical relevance and will not be described further. Myoadenylate deaminase deficiency is an inherited disorder of muscular energy metabolism with a lack of AMP deaminase activity in skeletal muscle. It is characterised by exercise-induced muscle pain, cramps and/o
AICAR (5-aminoimidazole-4-carboxamide ribonucleotide) mimics AMP to activate PRKAA1/PRKAA2 (AMPK) while metformin enhances AMPK signaling, promoting glucose uptake and glycolytic ATP production to compensate for purine cycle dysfunction
Direct provision of ribose-5-phosphate precursors bypasses the impaired purine nucleotide cycle, allowing direct ATP synthesis via ribose kinase (RBKS) and adenine phosphoribosyltransferase (APRT) pathways, circumventing AMPD1 deficiency
Allopurinol inhibition of xanthine oxidase (XDH) preserves hypoxanthine levels, while exogenous hypoxanthine supplementation drives HPRT1 (hypoxanthine phosphoribosyltransferase 1) salvage pathway to maintain IMP and ATP pools
Selective ADORA2A (adenosine A2A receptor) antagonism prevents adenosine-induced fatigue signaling and metabolic depression, while preserving adenosine availability for ATP synthesis via adenosine kinase (ADK)
Cordycepin and adenosine from Cordyceps sinensis upregulate creatine kinase (CKM, CKMT1A) expression and enhance phosphocreatine-ATP shuttle system to compensate for impaired purine nucleotide cycle energy buffering
Fulvic acid from Shilajit activates PGC1A (peroxisome proliferator-activated receptor gamma coactivator 1-alpha) leading to increased mitochondrial biogenesis and enhanced oxidative phosphorylation capacity to compensate for energy deficit