Dubin-Johnson syndrome

Dubin-Johnson syndrome
Bilirubin
ICD-10	E80.6
ICD-9	277.4
OMIM	237500
DiseasesDB	3982
eMedicine	med/588
MeSH	D007566

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Overview

Dubin-Johnson syndrome is an autosomal recessive disease which presents shortly after birth with an increase of conjugated bilirubin without elevation of liver enzymes (ALT, AST).

Presentation

There is a lack of canalicular multi-drug resistant protein which causes dysfunction on bilirubin transfer to bile canaliculi.

An isoform of this protein is localized to the lateral hepatocyte membrane, allowing transport of glucuronide and glutathione conjugates back into the blood.

Analysis of urine pophyrins show a normal level of coproporphirin but the I isomer accounts for 80% ot the total(normally 25%)

Liver will present with dark brown appearance due to pigment accumulation.

Prognosis

Prognosis is good and there's no need to treat this syndrome.

See also

• Jaundice
• Gilbert syndrome
• Crigler-Najjar syndrome
• Rotor syndrome

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