Tauroursodeoxycholic acid-d5 (TUDCA-d5) is intended for use as an internal standard for the quantification of TUDCA by GC- or LC-MS. TUDCA is a taurine-conjugated form of the secondary bile acid ursodeoxycholic acid .1,2 TUDCA is found in small quantities in human bile but at a higher concentration in the bile of black bears.2 It demonstrates anti-apoptotic activity in rodent models of tauopathy, Huntington's disease, ischemic brain injury, and retinal disorders.3,2
1.Beuers, U.Effects of bile acids on hepatocellular signaling and secretionYale J. Biol. Med.70(4)341-346(1997) 2.Boatright, J.H., Nickerson, J.M., Moring, A.G., et al.Bile acids in treatment of ocular diseaseJ. Ocul. Biol. Dis. Infor.2(3)149-159(2009) 3.Vang, S., Longley, K., Steer, C.J., et al.The unexpected uses of urso- and tauroursodeoxycholic acid in the treatment of non-liver diseasesGlob. Adv. Health Med.3(3)58-69(2014)