NCIt definition : Any antidiabetic agent with the glitazone (thiazolidinedione) base structure with
antihyperglycemic activity. Glitazone antidiabetic agents selectively bind to and
stimulate the nuclear receptor peroxisome proliferator-activated receptor (PPAR) gamma.
This results in the selective transcription of a number of insulin-sensitive genes
involved in glucose metabolism. This eventually enhances insulin sensitivity, reduces
insulin resistance and decreases hepatic gluconeogenesis. PPARs function as transcription
factors that regulate expressions of genes involved in cellular differentiation, development,
and metabolism (carbohydrate, lipid, protein), as well as tumorigenesis; PPARgamma
is expressed at high levels in adipose tissue.;