Alanine transaminase: Difference between revisions
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Alanine | == Alanine Transaminase == | ||
[[File:Alanine_transaminase.png|thumb|right| | [[File:Alanine_transaminase.png|thumb|right|Diagram of alanine transaminase structure]] | ||
'''Alanine transaminase''' (ALT), also known as '''serum glutamate-pyruvate transaminase''' (SGPT), is an enzyme primarily found in the liver. It plays a crucial role in the [[alanine cycle]] | '''Alanine transaminase''' (ALT), also known as '''serum glutamate-pyruvate transaminase''' (SGPT), is an [[enzyme]] primarily found in the [[liver]]. It plays a crucial role in the [[alanine cycle]], which is important for [[amino acid]] metabolism and [[gluconeogenesis]]. | ||
==Function== | == Function == | ||
ALT catalyzes the reversible transfer of an [[amino group]] from [[alanine]] to [[_-ketoglutarate]], producing [[pyruvate]] and [[glutamate]]. This reaction is a key step in the [[catabolism]] of amino acids and is essential for the [[metabolism]] of nitrogen-containing compounds. | |||
ALT | |||
===Liver | == Clinical Significance == | ||
ALT is commonly measured in [[blood tests]] as a marker of [[liver function]]. Elevated levels of ALT in the [[bloodstream]] can indicate [[liver damage]] or [[liver disease]], such as [[hepatitis]], [[cirrhosis]], or [[liver cancer]]. | |||
=== Liver Diseases === | |||
In conditions like [[hepatitis]], the liver cells are damaged, releasing ALT into the bloodstream. Monitoring ALT levels can help assess the extent of liver damage and the effectiveness of treatment. | |||
=== Other Conditions === | |||
While ALT is most commonly associated with liver health, elevated levels can also be seen in conditions affecting other organs, such as [[heart failure]] or [[muscle injury]]. | |||
== Measurement == | |||
ALT levels are measured using a [[blood test]]. The normal range for ALT varies slightly between laboratories, but it is generally between 7 and 56 units per liter of serum. Factors such as [[age]], [[gender]], and [[body mass index]] can influence ALT levels. | |||
=== | == Related Enzymes == | ||
ALT is part of a group of enzymes known as [[transaminases]], which also includes [[aspartate transaminase]] (AST). Both ALT and AST are used in conjunction to assess liver health, with the ALT/AST ratio providing additional diagnostic information. | |||
ALT | |||
== | == Related Pages == | ||
* [[Liver function tests]] | * [[Liver function tests]] | ||
* [[ | * [[Hepatitis]] | ||
* [[ | * [[Cirrhosis]] | ||
* [[Transaminase]] | |||
* [[Amino acid metabolism]] | |||
[[Category:Enzymes]] | [[Category:Enzymes]] | ||
[[Category:Hepatology]] | [[Category:Hepatology]] | ||
[[Category: | [[Category:Biochemistry]] | ||
Latest revision as of 05:53, 16 February 2025
Alanine Transaminase[edit]
Alanine transaminase (ALT), also known as serum glutamate-pyruvate transaminase (SGPT), is an enzyme primarily found in the liver. It plays a crucial role in the alanine cycle, which is important for amino acid metabolism and gluconeogenesis.
Function[edit]
ALT catalyzes the reversible transfer of an amino group from alanine to _-ketoglutarate, producing pyruvate and glutamate. This reaction is a key step in the catabolism of amino acids and is essential for the metabolism of nitrogen-containing compounds.
Clinical Significance[edit]
ALT is commonly measured in blood tests as a marker of liver function. Elevated levels of ALT in the bloodstream can indicate liver damage or liver disease, such as hepatitis, cirrhosis, or liver cancer.
Liver Diseases[edit]
In conditions like hepatitis, the liver cells are damaged, releasing ALT into the bloodstream. Monitoring ALT levels can help assess the extent of liver damage and the effectiveness of treatment.
Other Conditions[edit]
While ALT is most commonly associated with liver health, elevated levels can also be seen in conditions affecting other organs, such as heart failure or muscle injury.
Measurement[edit]
ALT levels are measured using a blood test. The normal range for ALT varies slightly between laboratories, but it is generally between 7 and 56 units per liter of serum. Factors such as age, gender, and body mass index can influence ALT levels.
Related Enzymes[edit]
ALT is part of a group of enzymes known as transaminases, which also includes aspartate transaminase (AST). Both ALT and AST are used in conjunction to assess liver health, with the ALT/AST ratio providing additional diagnostic information.
