Estradiol 17-(β-D-glucuronide) (E217G) is an estrogen metabolite formed in the liver and subsequently excreted in bile.1It acts as a substrate of the multidrug resistance protein 2 (MRP2; Km= 75 μM), and through MRP2-mediated transport, functions as a cholestatic agent, decreasing bile flow.1,2In addition to binding to the MRP2 transport site, E217G has been shown to bind to an allosteric site that through positive cooperativity activates its own transportviaMRP2 and the transport of other MRP2 substrates, including the non-cholestatic estrogen metabolite, estradiol 3-(β-D-glucuronide) .2,3E217G has also been reported to be transported by MDR1, MRP1, MRP3, MRP4, MRP7, ABCG2 (a breast cancer resistance protein transporter), and the rat organic anion-transporting polypeptides 1-4.2 1.Loe, D.W., Almquist, K.C., Cole, S.P., et al.ATP-dependent 17β-estradiol 17-(β-D-glucuronide) transport by multidrug resistance protein (MRP). Inhibition by cholestatic steroidsThe Journal of Biological Chemisty271(16)9683-9689(1996) 2.Gerk, P.M., Li, W., and Vore, M.Estradiol 3-glucuronide is transported by the multidrug resistance-associated protein 2 but does not activate the allosteric site bound by estradiol 17-glucuronideDrug Metabolism and Disposition32(10)1139-1145(2004) 3.Gerk, P.M., Li, W., Megaraj, W., et al.Human multidrug resistance protein 2 transports the therapeutic bile salt tauroursodeoxycholateJournal of Pharmacology and Experimental Therapeutics320(2)893-899(2007)
Estradiol OVA 是一种多功能染料,广泛用于生物实验,帮助研究人员观察和分析细胞结构、追踪生物分子、评估细胞功能、区分细胞类型、检测生物分子、研究组织病理及监测微生物。其应用领域从基础科学研究延伸至临床诊断。此外,染料还用于传统纺织品染色、新兴的功能性纺织品处理、食品色素及染料敏化太阳能电池等方面。
Ethynyl estradiol 3-β-D-glucuronide is a metabolite of ethynyl estradiol that can be detected in urine.1,2It is used as a marker of estrogen contamination in fresh and saltwater.2 1.Hadd, H.E., Slikker, W., Jr., and Helton, E.D.The synthesis and characterization of the glucopyranosiduronic acids of 17a-ethynylestradiol-17bJ. Steroid Biochem.13(9)1107-1114(1980) 2.Griffith, D.R., Soule, M.C.K., Eglinton, T.I., et al.Steroidal estrogen sources in a sewage-impacted coastal oceanEnviron. Sci.: Processes Impacts18(8)931-1106(2016)