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  • 1
    ISSN: 1432-1076
    Keywords: Vitamin B12 unresponsive methylmalonic acidemia ; Protein intolerance ; Dietary therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The biochemical and therapeutic responses to dietary therapy were studied in a 25-month-old girl and a 1-month-old girl with methylmalonic acidemia (MMA-emia), which was unresponsive to vitamin B12. The minimum daily intake of protein which patients could tolerate and display a good development was between 1.0 and 1.2 g per kg body weight. Supplementation with amino acid mixture devoid of toxic amino acids was required to prevent protein malnutrition when daily protein intake was restricted to 0.6 g per kg body weight. Caloric intake should be sufficient, not only to promote growth but also to prevent a rise in MMA level, especially when a patient has ketoacidosis. It was found that MMA excretion per mg creatinine in random urine specimens correlated significantly with serum MMA and twenty four-hour output of MMA per kg body weight. Therefore measurement of MMA in a single urine specimen is useful for evaluating the in vivo accumulation of MMA.
    Type of Medium: Electronic Resource
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