Jaeson C Steele

Learn More
For more than 150 years, Chamorro natives of the Mariana Islands in the Western Pacific Ocean, have developed fatal paralysis in middle and later life, which we term amyotrophic lateral sclerosis/parkinsonism-dementia (ALS/PD). The cause of the disease might be exposure to seeds of the indigenous cycad. Motor system disease is induced in cynomolgus monkeys(More)
Amino acid contents were measured in autopsied brains of five Guamanian patients with amyotrophic lateral sclerosis (ALS) or parkinsonism-dementia. Absence of the glutamate deficiency and taurine excess characteristic of sporadic ALS suggest that, despite clinical similarities, Guamanian ALS is a different disorder from sporadic ALS.
A series of tubulysin analogs in which one of the stereogenic centers of tubuphenylalanine was eliminated were synthesized. All compounds were tested for antiproliferative activity towards ovarian cancer cells and for inhibition of tubulin polymerization. The dimethyl analogs were generally more active than the desmethyl analogs, and four analogs have(More)
An efficient route for the synthesis of the tubulysin family of antimitotic peptides was developed. Simplified tubulysin analogues were synthesized to define the minimum pharmacophore required for cytotoxicity. Simplified tubulysin analogues retain significant cytotoxicity and reveal important preliminary structure-activity relationships.
  • J C Steele
  • Journal of neural transmission. Supplementum
  • 1994
Progressive supranuclear palsy (PSP) is the name Dr. J. Clifford Richardson chose to designate an unusual clinical syndrome he first identified in the 1950s. Neurofibrillary degeneration is the hallmark of this fatal brain disease, and during our study of Richardson's patients, Professor Jerzy Olszewski and I also observed granulovacuolar degeneration, and(More)
  • 1