The recent development of a novel class of insulin-sensitizing drugs, the t
hiazolidinediones (TZDs), represents a significant advance in antidiabetic
therapy. One key mechanism by which these drugs exert their effects is by a
ctivation of the peroxisome proliferator activated receptor gamma (PPAR-gam
ma), a member of the nuclear receptor family. Evidence supporting this mech
anism of action of the TZDs will be reviewed in this article. Recent data s
uggests that PPAR-gamma agonists might also have therapeutic potential in t
he treatment of inflammatory diseases and certain cancers.