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Elevated alkaline phosphatase occurs when levels of alkaline phosphatase (ALP) exceed the reference range. This group of enzymes has a low substrate specificity and catalyzes the hydrolysis of phosphate esters in a basic environment. The major function of alkaline phosphatase is transporting chemicals across cell membranes. [1]
Alkaline phosphatase levels are usually high in hyperparathyroidism due to high bone turn over. In primary hyperparathyroidism, levels may remain within the normal range, but this is inappropriately normal given the increased levels of plasma calcium. [citation needed]
The enzyme alkaline phosphatase (ALP, alkaline phenyl phosphatase) is a phosphatase with the physiological role of dephosphorylating compounds. The enzyme is found across a multitude of organisms, prokaryotes and eukaryotes alike, with the same general function, but in different structural forms suitable to the environment they function in. Alkaline phosphatase is found in the periplasmic ...
Alkaline phosphatase (ALP) is an enzyme in the cells lining the biliary ducts of the liver. It can also be found on the mucosal epithelium of the small intestine, proximal convoluted tubule of the kidneys, bone, liver, and placenta.
The clinical diagnosis can be established if the patient has repeatedly elevated levels of alkaline phosphatase activity in the blood serum and exhibits intellectual disability. Supportive for the clinical diagnosis are epilepsies, brachydactyly and a characteristic facial gestalt, which can also be assessed by means of AI. [7]
Elevated alkaline phosphatase; Elevated gamma-glutamyltransferase; Elevated conjugated bilirubin; Cause. Congenital. In fetal and neonatal life the ductal plates are ...
Alkaline phosphatase allows for mineralization of calcium and phosphorus by bones and teeth. [19] ALPL gene mutation leads to insufficient TNSALP enzyme and allows for an accumulation of chemicals such as inorganic pyrophosphate [19] to indirectly cause elevated calcium levels in the body and lack of bone calcification.
The clinical laboratory evaluation of rickets begins with assessment of serum calcium, phosphate, and alkaline phosphatase levels. In hypophosphatemic rickets, calcium levels may be within or slightly below the reference range; alkaline phosphatase levels will be significantly above the reference range.Biochemically, XLH is recognized by ...