GLYCOLIC ACID

General Information

MaintermGLYCOLIC ACID
CAS Reg.No.(or other ID)79-14-1
Regnum 175.105

From www.fda.gov

Toxicity Profile

Route of ExposureOral ; dermal
Mechanism of ToxicityGlycolic acid's toxicity is due to its metabolism to oxalic acid. Glycolic and oxalic acid, along with excess lactic acid, are responsible for the anion gap metabolic acidosis. Oxalic acid readily precipitates with calcium to form insoluble calcium oxalate crystals. Tissue injury is caused by widespread deposition of oxalate crystals and the toxic effects of glycolic acid.
MetabolismThe main path of the degradation of glycolic acid is to glyoxylic acid. This reaction is mediated by lactic dehydrogenase or glycolic acid oxidase. Once glyoxylic acid is formed, it is apparently degraded very rapidly to a variety of products, a few of which have been observed. Its breakdown to 2-hydroxy-3-oxoadipate it is thought, is mediated by thiamine pyrophosphate in the presence of magnesium ions. The formation of glycine involves pyridoxal phosphate and glyoxylate transaminase, whereas the formation of carbon dioxide and water via formic acid apparently involves coenzyme A (CoA) and flavin mononucleotides.
Toxicity ValuesLD50: 1950 mg/kg (Oral, Rat) LD50: 1000 mg/kg (Intravenous, Cat) LC50: 7.7-14 mg/L over 4 hours (Inhalation, Rat)
Lethal Dose
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Minimum Risk Level
Health EffectsGlycolic acid metabolizes to oxalic acid, which reacts with calcium and forms calcium oxalate crystals in the kidney. This can cause kidney injury, leading to acute kidney failure. (L1023) Chronically high levels of glycolic acid are associated with the inborn error of metabolism known as Type I primary hyperoxaluria. Oxalate stones in primary hyperoxaluria tend to be severe, resulting in relatively early kidney damage (before age 20), which impairs the excretion of oxalate leading to a further acceleration in accumulation of oxalate in the body. After the development of renal failure patients may develop oxalate deposits in the bones, joints and bone marrow. Severe cases may develop haematological problems such as anaemia and thrombocytopaenia. The deposition of oxalate in the body is sometimes called "oxalosis" to be distinguished from "oxaluria" which refers to oxalate in the urine.
TreatmentChronic Exposure: In some patients with primary hyperoxaluria type 1, pyridoxine treatment (vitamin B6) may decrease oxalate excretion and prevent kidney stone formation. Acute Exposure: EYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice.
Reference
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From T3DB

Targets

Target Details

Glucose-6-phosphate 1-dehydrogenase

General Function:
Protein homodimerization activity
Specific Function:
Catalyzes the rate-limiting step of the oxidative pentose-phosphate pathway, which represents a route for the dissimilation of carbohydrates besides glycolysis. The main function of this enzyme is to provide reducing power (NADPH) and pentose phosphates for fatty acid and nucleic acid synthesis.
Gene Name:
G6PD
Uniprot ID:
P11413
Molecular Weight:
59256.31 Da
References
  1. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [17016423 ]
Target Details

Glycine oxidase

General Function:
Glycine oxidase activity
Specific Function:
Catalyzes the FAD-dependent oxidative deamination of various amines and D-amino acids to yield the corresponding alpha-keto acids, ammonia/amine, and hydrogen peroxide. Oxidizes sarcosine (N-methylglycine), N-ethylglycine and glycine. Can also oxidize the herbicide glyphosate (N-phosphonomethylglycine). Displays lower activities on D-alanine, D-valine, D-proline and D-methionine. Does not act on L-amino acids and other D-amino acids. Is essential for thiamine biosynthesis since the oxidation of glycine catalyzed by ThiO generates the glycine imine intermediate (dehydroglycine) required for the biosynthesis of the thiazole ring of thiamine pyrophosphate.
Gene Name:
thiO
Uniprot ID:
O31616
Molecular Weight:
40936.53 Da

From T3DB