porphyrias Flashcards

1
Q

Acute Intermittent Porphyria is a deficiency in ___________deaminase preventing Porphobilinogen being converted to Hydroxymethylbilane

A

Porphobilinogen Deaminase

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2
Q

Acute Intermittent Porphyria is a deficiency in Porphobilinogen deaminase preventing Porphobilinogen being converted to Hydroxymethylbilane and what finding in the urine because of neurotoxic accumulation of ?

A

Urine turns dark red (port wine) because of excess porphobilinogen

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3
Q

Abdominal pain leading to psychiatric symptoms and then peripheral neuropathy is a finding in

A

Acute Intermittent porphyria precipitated by sun

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4
Q

Most Common Chronic porphyria that is precipitated by the sun or hepatic injury is a deficiency in?

A

Porphyria Cutanea Tarda deficiency in Uroporphyrinogen Decarboxylase

prevents Uroporphyrinogen III from turning into Coprophyrinogen III

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5
Q

This ferrochetalase deficiency is treated by avoiding the sun, cholestyramine, plasmapharesis to remove porphyrins, and you can also do IV hemin or a SCT

A

Erythropoeitic protoporphyria, seen in kids

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6
Q

Congenital Erythropoeitic Porphyria is the scary vampire one which is a deficiency in

A

Uroporphyrinogen III Cosynthase deficiency

treat w. a SCT and transfusion for the anemia

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7
Q

Urine testing for Porphyria Cutanea Tarda will show increased levels of

A

uroporphyrin and hepatocarboxyporphyrin

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