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Drug-induced liver injury, as Hy's law states, patients with bilirubin of >3 mg/dL have 10% mortality rate. [36] End stage liver disease models also include hyperbilirubinemia as a critical parameter in prognosis of cirrhosis. Moreover, serum bilirubin is positively associated with mortality in patients with severe sepsis or traumatic brain injury.
Gilbert syndrome is a phenotypic effect, mostly associated with increased blood bilirubin levels, but also sometimes characterized by mild jaundice due to increased unconjugated bilirubin, that arises from several different genotypic variants of the gene for the enzyme responsible for changing bilirubin to the conjugated form.
The bilirubin level found in the body reflects the balance between production and excretion. Blood test results are advised to always be interpreted using the reference range provided by the laboratory that performed the test. The SI units are μmol/L. [52] Typical ranges for adults are: [53] 0–0.3 mg/dl – Direct (conjugated) bilirubin level
Not only drugs but also endogenous substrates like bilirubin, steroidal hormones and thyroxine utilize this pathway. Enterohepatic circulation of drugs describes the process by which drugs are conjugated to glucuronic acid in the liver, excreted into bile, metabolized back into the free drug by intestinal bacteria, and the drug is then ...
The clinical significance of bilirubin glucuronide is involved in many conditions. Drugs that inhibit the activities of the components involved in bilirubin metabolism can give rise to accumulation of bilirubin in the blood. [5] In comparison, conjugation of some drugs is also usually impaired if the liver cannot normally metabolize indirect ...
Jaundice, also known as icterus, is a yellowish or greenish pigmentation of the skin and sclera due to high bilirubin levels. [3] [6] Jaundice in adults is typically a sign indicating the presence of underlying diseases involving abnormal heme metabolism, liver dysfunction, or biliary-tract obstruction. [7]
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Hemolytic causes associated with bilirubin overproduction are diverse and include disorders such as sickle cell anemia, [2] hereditary spherocytosis, [3] thrombotic thrombocytopenic purpura, [4] autoimmune hemolytic anemia, [5] hemolysis secondary to drug toxicity, [6] thalassemia minor, [7] and congenital dyserythropoietic anemias. [8]
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