Metabolic Disorders Flashcards
Phenylalanine-Tyrosine Disorders
Failure to inherit a gene that produces Phenylalanine hydrolxyase
Phenylketonuria
Test for Phenylketonuria
Gutherie Test (Bacterial Inhibition)
FeCI3 (Blue-green)
In every 10, 000 to 20, 000 birth, there is _ case of PKU
1
Clinical significance of PKU
Mental retardation if left untreated
Fair-skin complexion (lack of tyrosine)
Phenylalanine-Tyrosine Disorders
Disorder that has a:
FeCI3 - Transient GREEN
Nitroso-napthol - Orange Red
Tyrosyluria
Phenylalanine-Tyrosine Disorders
Failure of the gene to produce enzyme homogentisic acid
Alkaptonuria
Phenylalanine-Tyrosine Disorders
FeCI3 = Transient Blue
Benedicts/Clinitest = Yellow precipitate
Alkaptonuria
Phenylalanine-Tyrosine Disorders
Overproliferation of melanocytes
Melanuria
Phenylalanine-Tyrosine Disorders
FeCI3 = Gray or Black precipitate
Sodium nitroprusside = Red
Ehrlich = Red
Melanuria
Branched-chain Amino Acid Disorders (2)
Maple Syrup Disease
Organic Acidemias
Branched-chain Amino Acid Disorders
Accumulation of Leucine, Isoleucine, and Valine (ILV) in blood and urine
Maple Syrup Disease
Branched-chain Amino Acid Disorders
Test to determine MSU uses
2-4 DNPH (Dinitrophenylhydrazine) = YELLOW TURBIDITY/PRECIPITATE
Branched-chain Amino Acid Disorders
Symptoms include early server illness
- VOMITING
- Hypoglysemia
- Ketonuria
- Increased serum ammonia
- metabolic acidosis
Organic Acidemias
Branched-chain Amino Acid Disorders
Organic Acidemias is usually associated in
Isovaleric, Proprionic, and Methylmalonic acidemias
Tryptophan Disorders (2)
Indicanuria
Argentaffinoma
Tryptophan Disorders
Associated with Intestinal Disorder
Hartnup Disease
Indicanuria
Tryptophan Disorders
Presence of Blue urine
Indicanuria
Tryptophan Disorders
Test for Indicanuria
FeCI3 = Purple with CHLOROFORM
Tryptophan Disorders
Condition also known as Blue Diaper Syndrome
Indicanuria
Tryptophan Disorders
Increase in 5-HIAA (HydroxyIndoleAcetic Acid)
Argentaffinoma