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Hyperbilirubinemia is a clinical condition describing an elevation of blood bilirubin level due to the inability to properly metabolise or excrete bilirubin, a product of erythrocytes breakdown. In severe cases, it is manifested as jaundice , the yellowing of tissues like skin and the sclera when excess bilirubin deposits in them. [ 1 ]
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]
As unconjugated bilirubin has a high affinity to albumin, at high level it is not efficiently cleared through glomerular filtration and it binds to the elastic tissue of the skin and sclera, where high albumin content can be found. [25] This explains the yellow discolouration observed in these tissues in hemolytic jaundice.
When the liver is unable to process bilirubin, it can also lead to jaundice. “Although less common in NAFLD early stages, jaundice can occur if liver damage progresses, leading to a yellowish ...
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
The researchers collected valuable data across 184 countries, but the study did not factor in all income levels and the increased risk of diabetes and cardiovascular disease among high-risk ethnic ...
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.
Over 170 million U.S.-born people who were adults in 2015 were exposed to harmful levels of lead as children, a new study estimates. Researchers used blood-lead level, census and leaded gasoline ...