aldolase

aldolase /al·do·lase/ (al´do-lās)

1. aldehyde-lyase.

2. an enzyme that acts as a catalyst in the production of dihydroxyacetone phosphate and glyceraldehyde phosphate from fructose 1,6-bisphosphate. It occurs in several isozymes, one of which is deficient in hereditary fructose intolerance.

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al·dol·ase (ld-ls, lz)

n.

An enzyme present in certain living tissues, including skeletal and heart muscle tissues, that catalyzes the breakdown of a fructose ester into triose sugars.

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Aldolase

An enzyme, found primarily in the muscle, that helps convert sugar into energy.

Mentioned in: Aldolase Test

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aldolase

[al′dəlās]

enzymes found in muscle tissue that catalyze the step in anaerobic glycolysis involving the breakdown of fructose 1,6-biphosphate to glyceraldehyde 3-phosphate. The enzyme can also catalyze the reverse reaction. Normal adult findings are 3 to 8.2 Sibley-Lehninger units/dL or 22 to 59 mU at 37° C. See also glycolysis.

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aldolase

an enzyme involved in the Embden-Meyerhof or glycolytic pathway which reversibly catalyzes the reaction fructose-1,6-bisphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. Present in all cells and may be measured in the serum as an indicator of muscle, heart or liver disease. Called also ALS and ALD.

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aldolase

Clinical chemistry A serum enzyme that cleaves fructose 1,6-diphosphate to dihydroxyacetone phosphate and glyceraldehyde-3-phosphate in the muscles to produce energy; aldolase is distributed in all tissues and ↑ in skeletal muscle disease or injury, metastatic CA, CML, megaloblastic anemia, hemolytic anemia, or infarction; it is measured in suspected myopathies, as the intensity of ↑ reflects the severity of disease; aldolase may also be ↑ early in Pts who later develop muscular dystrophy and can also be used to monitor steroid therapy in inflammatory myopathies Ref range 3.1-7.5 U/L; aldolase is ↑ in Duchenne's muscular dystrophy, dermatomyositis, polymyositis, trichinosis