Description
Neopterin, a pyrazino-pyrimidine compound derived from GTP, n is a precursor of tetrahydrobiopterin and can be used as a biochemical marker indicative of cell proliferation. Neopterin is synthesized in response to interferon-γ stimulation, and used as a marker of T helper cell-induced immune activation. Neopterin is also an indicator of oxidative stress, and modulates the effects of reactive oxygen species (ROS)