Bert Nicholas La Du, Jr. , M.D., Ph.D. 1920 - January 30, 2005. Dr. Bert N. La Du, Professor Emeritus of Pharmacology at the University of Michigan, was President of ASPET from 1978-1979. Dr. La Du's primary research interests were the biochemistry of drug metabolism and pharmacogenetics. He pioneered work on variants of Butyrylcholinesterase and Paraoxonases. A tribute to his work was given by Oksana Lockridge at the 6th international meeting on cholinesterases (San Diego) in 1998 (Lockridge 1998) and ASPET LaDu.pdf