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Nitrogen Mtabolism Disorders
Test 2
9
Medical
Professional
09/07/2011

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Term
If a patient presents with increased levels of homocysteine and methionine, what disorder might they be suffering from?
Definition
Homocystinuria
Term
What nitrogen metabolism disorder is often linked with cardiovascular complications? Why?
Definition
Homocysteinuria. Increased levels of homocysteine cause cardiovascular problems
Term
What nitrogen metabolism disorder is associated with problems breaking down branched chain amino acids?
Definition
Alpha ketoacid dehydrogenase deficiency or maple syrup urine disease.
Term
Leucine in the blood would indicate what?
Definition
MSUD aka alpha ketoacid dehydrogenase deficiency.
Term
What condition is associated with accumulation of homogentisate in the urine?
Definition
Alkaptonuria
Term
What must be restricted in the diet of a patient with alkaptonuuria?
Definition
Tyrosine and phenyalanine
Term
What disorder is associated with darkening of the collagen, and arthritis later in life?
Definition
Alkaptonuria--due to homogentisate oxidase deficiency leading to a build up of homogentisate.
Term
Phenylalanine, phenylacetate, and phenylpyruvate in the urine and plasma indicate what disorder?
Definition
PKU or phenylketonuria
Term
Phenylketonuria is caused by what?
Definition
Phenylalanine hydroxylase deficiency.
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