macroamylase

macroamylase
Descriptive term applied to a form of serum amylase in which the enzyme is present as a complex joined to a globulin; the molecular weight of the enzyme alone is 50,000, whereas that of the complex probably exceeds 160,000; hence, renal excretion of the complex is not appreciable.

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mac·ro·am·y·lase (mac″ro-amґə-lās) serum amylase bound to a globulin. Because the complex formed (MW 200,000) is too large for renal clearance, its formation results in elevated levels of plasma amylase.

Medical dictionary. 2011.

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  • macroamylasemia — A form of hyperamylasemia, in which a portion of serum amylase exists as macroamylase. [macroamylase + G. haima, blood] * * * mac·ro·am·yl·a·se·mia (mak″ro am″əl ə seґme ə) a type of hyperam …   Medical dictionary

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