Alpha-Amino-N-butyric acid (α-ANB), also known as alphaaminobutyric acid, is a nonessential amino acid derived from the catabolism of methionine, threonine, and serine. α-ANB is both formed and metabolized by reactions which require vitamin B6 as a cofactor.
References:
- Shaw S, Lieber CS. Plasma amino acids in the alcoholic: nutritional aspects. Alc Clin Exp Reds. 1983;7(1):22-27.
- Kang-Yoon SA, Kirksey A. Relation of short-term pyridoxineHCl supplementation to plasma vitamin B-6 vitamers and amino acid concentrations in young women. Am J Clin Nutr. 1992;55(4):865-872.
- Steele RD. Transaminative metabolism of alpha-amino-n-butyrate in rats. Metab: Clin Exp. 1982;31(4):318-325.
- Shaw S, Stimmel B, Lieber CS. Plasma alpha amino-n-butyric acid to leucine ratio: an empirical biochemical marker of alcoholism. Science. 1976;194(4269):1057-1058.
- Shaw S, Lieber CS. Increased hepatic production of alphaamino-n-butyric acid after chronic alcohol consumption in rats and baboons. Gastroenterology. 1980;78(1):108-113.
- Lieber CS. Role of oxidative stress and antioxidant therapy in alcoholic and nonalcoholic liver diseases. Adv Pharmacol. 1997;38:601-628.
- Chiarla C, Giovannini I, Siegel JH. Characterization of alphaamino-n-butyric acid correlations in sepsis. Transl Res. 2011;158(6):328-333.
- Moszak M, Klupczynska A, Kanikowska A, et al. The influence of a 3-week body mass reduction program on the metabolic parameters and free amino acid profiles in adult Polish people with obesity. Adv Clin Exp Med. 2018;27(6):749-757.
- Adachi Y, Toyoshima K, Nishimoto R, et al. Association between plasma alpha-aminobutyric acid and depressive symptoms in older community-dwelling adults in Japan. Geriatr Gerontol Int. 2019;19(3):254-258.
- Le Couteur DG, Ribeiro R, Senior A, et al. Branched chain amino acids, cardiometabolic risk factors and outcomes in older men: the Concord Health and Ageing in Men Project. J Gerontol Series A, Biol Sci Med Sci. 2019.
Low levels of α-ANB may be seen when overall amino acids are low, especially it’s precursors. Additionally, a functional deficiency in vitamin B6 has been associated with lower levels of α-ANB and levels can increase with B6 supplementation. Clinically, low levels of plasma α-ANB have been associated with depressive symptoms.
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Levels of this metabolite may be elevated if its precursors are also elevated. A functional need for vitamin B6 can limit the further metabolism of α-ANB and contribute to elevated levels. Elevations of this metabolite have been studied in several conditions which contribute to a functional vitamin B deficiency, such as alcoholism, sepsis, hypocaloric weight loss, and excessive exercise.
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% Omega-3s, % Omega-6s, % Omega-9s, % Saturated Fats, 1-Methylhistidine, 3-Hydroxyisovaleric Acid, 3-Hydroxyphenylacetic Acid, 3-Hydroxypropionic Acid, 3-Methyl-4-OH-phenylglycol, 3-Methylhistidine, 4-Hydroxyphenylacetic Acid, 5-OH-indoleacetic Acid, 8-OHdG (urine), a-Amino-N-butyric Acid, a-Aminoadipic Acid, a-Hydroxybutyric Acid, a-Hydroxyisobutyric Acid (from MTBE), a-Keto-b-Methylvaleric Acid, a-Ketoadipic Acid, a-Ketoglutaric Acid, a-Ketoisocaproic Acid, a-Ketoisovaleric Acid, a-Ketophenylacetic Acid (from Styrene), a-Linolenic (ALA) 18:3 n3, AA / EPA (20:4 n6 / 20:5 n3), Adipic Acid, Alanine, Aluminum, Anserine (dipeptide), Antimony, Arachidic C20:0, Arachidonic (AA) 20:4 n6, Arginine, Arsenic, Asparagine, Aspartic Acid, b-Alanine, b-Aminoisobutyric Acid, b-OH-b-Methylglutaric Acid, b-OH-Butyric Acid, Barium, Behenic C22:0, Benzoic Acid, Bismuth, Cadmium, Calcium, Carnosine (dipeptide), Cesium, Chromium, cis-Aconitic Acid, Citramalic Acid, Citric Acid, Citrulline, Cobalt, Copper, Creatinine, Creatinine Concentration (Amino Acids FMV), Cystathionine, Cysteine, Cystine, D-Arabinitol, Dihomo-g-linolenic (DGLA) 20:3 n6, Dihydroxyphenylpropionic Acid (DHPPA), Docosahexaenoic (DHA) 22:6 n3, Docosapentaenoic (DPA) 22:5 n3, Docosatetraenoic (DTA) 22:4 n6, Eicosadienoic 20:2 n6, Eicosapentaenoic (EPA) 20:5 n3, Elaidic 18:1 n9t, Ethanolamine, Formiminoglutamic Acid (FIGlu), g-Aminobutyric Acid, g-Linolenic (GLA) 18:3 n6, Gadolinium, Gallium, Glutamic Acid, Glutamine, Glutaric Acid, Glyceric Acid, Glycine, Glycolic Acid, Hippuric Acid, Histidine, Homovanillic Acid, Indoleacetic Acid, Iron, Isocitric Acid, Isoleucine, Isovalerylglycine, Kynurenic / Quinolinic Ratio, Kynurenic Acid, Lactic Acid, Lead, Leucine, Lignoceric C24:0, Linoleic (LA) 18:2 n6, Linoleic / DGLA (18:2 n6 / 20:3 n6), Lipid Peroxides (urine), Lithium, Lysine, Magnesium, Malic Acid, Manganese, Margaric C17:0, Mercury, Methionine, Methylmalonic Acid, Molybdenum, Nervonic 24:1 n9, Nickel, Niobium, Oleic 18:1 n9, Omega-3 Index, Omega-6s /Omega-3s, Ornithine, Orotic Acid, Oxalic Acid, Palmitic C16:0, Palmitoleic 16:1 n7, Pentadecanoic C15:0, Phenylacetic Acid, Phenylalanine, Phosphoethanolamine, Phosphoserine, Platinum, Potassium, Proline, Pyroglutamic Acid, Pyruvic Acid, Quinolinic Acid, Rubidium, Sarcosine, Selenium, Serine, Stearic C18:0, Strontium, Suberic Acid, Succinic Acid, Sulfur, Tartaric Acid, Taurine, Thallium, Thorium, Threonine, Tin, Tricosanoic C23:0, Tryptophan, Tungsten, Tyrosine, Uranium, Urea, Urine Creatinine, Vaccenic 18:1 n7, Valine, Vanadium, Vanilmandelic Acid, Xanthurenic Acid, Zinc
