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  • Title: Metabolic acidosis and protein catabolism: mechanisms and clinical implications.
    Author: Bailey JL.
    Journal: Miner Electrolyte Metab; 1998; 24(1):13-9. PubMed ID: 9397412.
    Abstract:
    Metabolic acidosis increases protein degradation resulting in muscle wasting and a negative nitrogen balance. The branched-chain amino acids serve as useful markers of these changes and their catabolism is increased in acidosis, particularly for the spontaneous acidosis associated with renal failure. As a result, the neutral nitrogen balance is compromised and malnutrition results. Glucocorticoids mediate these changes through the recently discovered ATP-dependent ubiquitin-proteasome pathway. Therapy necessitates correction of the underlying acidosis either through adjustment of the alkalinity of the dialysate for the patient on dialysis or through dietary protein restriction and sodium bicarbonate supplements for the predialysis patient.
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