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What does HGA stand for?

HGA stands for Homogentisic Acid

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Samples in periodicals archive:

It is caused by the lack of an enzyme called homogentisic dioxygenase which means that patients cannot fully break down a toxic acid called homogentisic acid (HGA).
19] In melanotic RCC, dark-brown endogenous pigments can be found; the kidney may appear black one, and the differential diagnosis may be hemosiderin, homogentisic acid and lipofuscin.
Fifteen standard phenolic compounds, including gallic acid, pyrogallol, homogentisic acid, protocatechuic acid, (+) catechin, chlorogenic acid, caffeic acid, vanillin, ferulic acid, naringin, resveratrol, naringenin, hesperetin, formononetin, biochanin-A were purchased from Sigma Aldrich and used for calibration curves.
Sbou' explained that Alkaptonuria is caused by deficiency of the enzyme homogentisic acid oxidase (HGO), as a consequence of the enzymatic block, the homogentisic acid (HGA) accumulates in body tissues, vertebrae, joints and heart valves,.
Importantly, neither melanin nor homogentisic acid are detected in a routine urinalysis, therefore careful attention to the color of urine can provide an important clue to an underlying disease process.
Patients do not have enough of the enzyme homogentisic acid oxidase, which causes acid to build up in the body.