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Functional Metabolomics' Enhances Assessment Of Tissue Dysfunction As Demonstrated In A Rat Model Of Sub-Acute D-Serine Exposure, Isaie Sibomana
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We describe a methodology that combines urinary metabolomics with a tissue-specific stressor administration to enhance assessment of tissue function. Kidney function in rats was mildly compromised with a sub-acute dose of D-serine and stressed with furosemide. NMR-based metabolomics analyses showed no detectable effects due to D-serine alone; but furosemide or D-serine + furosemide groups, classified separately from each other, and from control. Furosemide alone caused a ca. 2-fold increase in glucose, lactate, choline, and a 30% decrease in TCA intermediates (p≤0.05). D-serine suppressed these effects and produced a 1.7-fold increase in a p-phenolic acid-derivative of tyrosine (PAdY) relative ...