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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 ...
Hyperphosphatemia is an electrolyte disorder in which there is an elevated level of phosphate in the blood. [1] Most people have no symptoms while others develop calcium deposits in the soft tissue. [1] The disorder is often accompanied by low calcium blood levels, which can result in muscle spasms. [1]
76768 Ensembl ENSG00000163283 ENSMUSG00000079440 UniProt P05187 F8VPQ6 RefSeq (mRNA) NM_001632 NM_001081082 RefSeq (protein) NP_001623 NP_001074551 Location (UCSC) Chr 2: 232.38 – 232.38 Mb Chr 1: 87.03 – 87.03 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Alkaline phosphatase, placental type also known as placental alkaline phosphatase (PLAP) is an allosteric enzyme that in ...
Alkaline phosphatase allows for mineralization of calcium and phosphorus by bones and teeth. [21] ALPL gene mutation leads to insufficient TNAP enzyme and allows for an accumulation of chemicals such as inorganic pyrophosphate [ 21 ] to indirectly cause elevated calcium levels in the body and lack of bone calcification.
Biochemical studies reveal hypophosphatemia (low blood phosphate), elevated alkaline phosphatase and low serum 1,25 dihydroxyvitamin D levels. Routine laboratory tests may not include serum phosphate levels and this can result in considerable delay in diagnosis. Even when low phosphate is measured, its significance is often overlooked.
Laboratory findings include low-normal serum calcium, moderately low serum phosphate, elevated serum alkaline phosphatase, and low serum 1,25 dihydroxy-vitamin D levels, hyperphosphaturia, and no evidence of hyperparathyroidism. [8] Hypophosphatemia decreases 2,3-bisphosphoglycerate (2,3-BPG) causing a left shift in the oxyhemoglobin curve.