aspartate aminotransferase

(redirected from serum glutamicoxaloacetic transaminase)

as·par·tate a·mi·no·trans·fer·ase (AST),

an enzyme catalyzing the reversible transfer of an amine group from l-glutamate to oxaloacetate, forming α-ketoglutarate and l-aspartate; an aid in diagnosing viral hepatitis and myocardial infarction.

aspartate aminotransferase (AST)

an enzyme normally present in body serum and in certain body tissues, especially those of the heart and liver. This enzyme affects the intermolecular transfer of an amino group from aspartic acid to alpha-ketoglutaric acid, forming glutamic acid and oxaloacetic acid. The reaction is reversible. The enzyme is released into the serum because of tissue injury and thus may increase as a result of myocardial infarction and liver damage. Normal findings for adults are 8 to 20 U/L or 5 to 40 IU/L. Previously called glutamic-oxaloacetic transaminase, serum glutamic oxaloacetic transaminase (SGOT). Compare alanine aminotransferase.

aspartate aminotransferase

GOT, glutamate oxaloacetate transaminase AST A cytoplasmic and mitochondrial transaminase enzyme that catalyzes the reaction of aspartate and 2-oxoglutarate yielding glutamate and oxaloacetate; the transport of amino acids is central to protein buildup-anabolism or breakdown-catabolism; AST is ↑ in hepatic, myocardial, renal and cerebral infarction, and in hepatic and skeletal muscle disease

as·par·tate a·mi·no·trans·fer·ase

(AST) (as-pahr'tāt ă-mē'nō-trans'fĕr-ās)
An enzyme catalyzing the reversible transfer of an amine group from l-glutamic acid to oxaloacetic acid, forming α-ketoglutaric acid and l-aspartic acid; a diagnostic aid in viral hepatitis and in myocardial infarction.
Synonym(s): glutamic-oxaloacetic transaminase, serum glutamic-oxaloacetic transaminase.

aspartate aminotransferase

One of the enzymes released into the blood when tissue, such as liver or heart muscle, is damaged. Measurement of the level of such enzymes gives a useful indication of the extent of the damage.

aspartate aminotransferase

an enzyme that catalyzes the reversible transfer of an amino group:
$$\eqalign{\hbox{aspartic acid + \alpha-ketoglutaric acid }\cr \hbox{\quad\leftrightharpoonsarrow\,\! oxaloacetic acid + glutamic acid}}$$
requiring the coenzyme pyridoxal phosphate; abbreviated AST. It is present in many tissues and body fluids. The serum concentration is elevated when damage to tissue cells, especially of the heart and liver, causes a release of the enzyme. AST values are also increased in some muscle diseases, such as enzootic muscular dystrophy. The test has limitations because of its lack of organ specificity. Called also (serum) glutamic-oxaloacetic aminotransferase (GOT or SGOT).

Patient discussion about aspartate aminotransferase

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