hydroxyhemoglobin
Hydroxyhemoglobin is a derivative of hemoglobin, the oxygen-carrying protein found in red blood cells. It is formed when hemoglobin reacts with hydrogen peroxide, a byproduct of oxidative stress, leading to the hydroxylation of the heme group. This reaction can occur under various physiological and pathological conditions, including exposure to certain chemicals, radiation, or during inflammation.
Hydroxyhemoglobin is characterized by its distinctive absorption spectrum, which differs from that of oxyhemoglobin and deoxyhemoglobin.
The formation of hydroxyhemoglobin is reversible, and the hydroxylated heme group can be reduced back to the