Bk. England et al., ACIDOSIS AND GLUCOCORTICOIDS INDUCE BRANCHED-CHAIN AMINO-ACID CATABOLISM, Mineral and electrolyte metabolism, 22(1-3), 1996, pp. 69-71
Chronic renal failure (CRF) is frequently complicated by malnutrition
and wasting. The loss of lean body mass in CRF is the result of accele
rated protein and amino acid degradation. Both appear to occur via aci
dosis-induced, glucocorticoid-dependent processes. In skeletal muscle,
acidosis stimulates the activity of the rate-limiting enzyme in branc
hed-chain amino acid metabolism, branched-brain ketoacid dehydrogenase
(BCKAD). The activation of BCKAD in acidosis is likely to be glucocor
ticoid-dependent.