Nitrogen Metabolism Flashcards

0
Q

Congenital deficiency of Homogentisic acid oxidase

A

Alkaptonuria

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1
Q

Phenylalanine hydroxylase deficiency

A

Phenylketonuria

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2
Q

Tyrosinase deficiency

A

Albinism

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3
Q

Autoimmune destruction of melanocytes

A

vitiligo

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4
Q

Congenital impairment of melanin synthesis

A

albinism

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5
Q

A-ketoacid dehydrogenase deficiency

A

Maple syrup urine disease

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6
Q
Inherited defect of renal tubular amino acid transporter for
Cysteine
Ornithine
Lysine
Arginin
A

Cystinuria

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7
Q

Cystathionine synthase deficiency

A

Homocystinuria

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8
Q

Kidney stone that favors ALKALINE urine

A

Struvite stone

Mg alkaline phosphate

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9
Q
Mental retardation
Growth retardation
Fair skin
Eczema 
Musty odor
A

PKU

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10
Q

Urine turn black on standing
Connective tissue is dark
Debilitating arthralgias

A

Alkaptonuria

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11
Q

⬆️ risk of skin cancerlack of migration of neural crest cell

A

Albinism

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12
Q

Tall stature
Mental retardation
Osteoporosis
Lens sublaxation (downward and inward)

A

Hocystinuria

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13
Q

Photosensitivity
Abdominal pain
Neuropsychiatric symptoms

A

Porphyrias

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14
Q

2 enzymes deactivated by LEAD POISONING

A

Ferrochelatase

ALA dehydratase

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15
Q

Uroporphyrinigen decarboxylase deficiency

Photosensitivity

A

Porphyria cutanea tarda

16
Q

Uroporphyrinogen 1 synthase deficiency

A

Abdominal pain
Neuropsychiatric symptoms
NO PHOTOSENSITIVITY

17
Q

ALA Synthase deficiency manifesting as anemia

A

X-linked sideroblastic anemia

18
Q

Pyridoxine deficiency associated with ISONIAZID therapy

A

Sideroblastic anemia with ringed sideroblast

19
Q

Test to measure total and direct bilirubin

A

Van den bergh reaction