Changes of genetic apolipoprotein phenotypes caused by liver transplantation. Implications for apolipoprotein synthesis

Abstract

Liver transplantation provides a unique opportunity to investigate the contribution in vivo of the liver to the synthesis and degradation of genetically polymorphic plasma proteins. We have determined the genetic polymorphisms of apo A-IV, apo E, and of the Lp(a) glycoprotein (apo (a)) in the plasma of subjects undergoing liver transplantation and in respective organ donors. The results show that in humans, > 90% of the plasma apo E and virtually all apo (a) are liver derived, whereas this organ does not significantly contribute to plasma apo A-IV levels.