Lorey F W, Ahlfors C E, Smith D G, Neel J V
Am J Hum Genet. 1984 Sep;36(5):1112-20.
Sera of Yanomama Indians homozygous for the common albumin allele exhibited greater total effective-binding capacities for bilirubin than did sera of individuals homozygous for the Yan-2 albumin variant in the in vitro experiments described herein. Total effective binding capacities of heterozygous samples were close to those of homozygotes for AlA. Individuals homozygous for Yan-2 might experience a higher risk of bilirubin toxicity and related disorders during the neonatal period. Further studies of binding and displacement of bilirubin by competitors, such as dietary or medicinal coumarins, might help explain the existence of these polymorphisms and the significance of phenotypic differences in binding to bilirubin.
在本文所述的体外实验中,对于常见白蛋白等位基因纯合的雅诺马马印第安人的血清,其对胆红素的总有效结合能力高于对Yan - 2白蛋白变体纯合的个体的血清。杂合样本的总有效结合能力接近AlA纯合子的总有效结合能力。对于Yan - 2纯合的个体在新生儿期可能面临更高的胆红素毒性及相关病症风险。进一步研究胆红素与诸如膳食或药用香豆素等竞争者的结合及置换情况,可能有助于解释这些多态性的存在以及与胆红素结合的表型差异的意义。