Melatonin ELISA kits are assays designed to measure concentrations of melatonin, a hormone secreted by the pineal gland. Melatonin is known to exert a variety of in vivo effects, including reduction of oxidative stress, enhancement of DNA repair, reduced expression of proangiogenic proteins, and decreased cell migration and invasion. Melatonin has been found to stimulate appetite-inhibiting molecules such as leptin in the liver and intestine and decrease the expression of genes involved in lipid metabolism and growth. It has also been shown to protect hippocampal neurons from radiation-induced apoptosis by inhibiting the caspase-3 pathway. Visit the ELISA kit supplier page for more information about detection target, range, origin and reactivity.