Gaxilose Bioactivity,Chemical Properties,Storage & Solubility Information Pathways-PeptideDB

Description	Gaxilose, also known as 4-Galactosylxylose, a synthetic disaccharide and a substrate of intestinal lactase. Gaxilose is used in a new noninvasive diagnostic test based on urine or serum measurement of D-xylose after lactase cleavage of orally administered 4-galactosylxylose (gaxilose). Gaxilose is hydrolyzed into galactose and xylose in vivo. Galactose is converted into glucose in the liver and xylose is absorbed from a passive way and partially metabolized endogenously (50%). The rest appears in blood and it is excreted finally through urine. The amount of xylose in urine is proportional to the activity of intestinal lactase. This represents a direct measure of hypo or normo lactasia.
Synonyms	4-Galactosylxylose, 4-O-Galactosyl-D-xylose, 4-O-Galactosylxylose
molecular weight	312.271
Molecular formula	C11H20O10
CAS	14087-31-1
Storage	Powder: -20°C for 3 years \| In solvent: -80°C for 1 year
References	1. Domínguez Jiménez JL, Fernández Suárez A, Muñoz Colmenero AÚ, Fatela Cantillo D, López Pelayo I. Primary hypolactasia diagnosis: Comparison between the gaxilose test, shortened lactose tolerance test, and clinical parameters corresponding to the C/T-13910 polymorphism. Clin Nutr. 2016 Jan 20. pii: S0261-5614(16)00008-X. doi: 10.1016/j.clnu.2016.01.006. [Epub ahead of print] PubMed PMID: 26847948. 2. Hermida C, Martínez-Costa OH, Corrales G, Teruel C, Sánchez V, Sánchez JJ, Sarrión D, Ariza MJ, Codoceo R, Calvo I, Fernández-Mayoralas A, Aragón JJ. Improvement and validation of d-xylose determination in urine and serum as a new tool for the noninvasive evaluation of lactase activity in humans. J Clin Lab Anal. 2014 Nov;28(6):478-86. doi: 10.1002/jcla.21713. Epub 2014 Mar 22. PubMed PMID: 24659338. 3. Aragón JJ, Hermida C, Martínez-Costa OH, Sánchez V, Martín I, Sánchez JJ, Codoceo R, Cano JM, Cano A, Crespo L, Torres Y, García FJ, Fernández-Mayoralas A, Solera J, Martínez P. Noninvasive diagnosis of hypolactasia with 4-Galactosylxylose (Gaxilose): a multicentre, open-label, phase IIB-III nonrandomized trial. J Clin Gastroenterol. 2014 Jan;48(1):29-36. doi: 10.1097/MCG.0b013e318297fb10. PubMed PMID: 23722657. 4. Hermida C, Guerra P, Martínez-Costa OH, Sánchez V, Sánchez JJ, Solera J, Fernández-Mayoralas A, Codoceo R, Frías J, Aragón JJ. Phase I and phase IB clinical trials for the noninvasive evaluation of intestinal lactase with 4-galactosylxylose (gaxilose). J Clin Gastroenterol. 2013 Jul;47(6):501-8. doi: 10.1097/MCG.0b013e318272f507. PubMed PMID: 23328304.

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Gaxilose

CAS No.: 14087-31-1