“Serotonin (1-100 microM), melatonin (100 microM), and antioxidant enzymes attenuated the effects of 6-OHDA, iron plus ascorbate , or 1-methyl-4-phenylpyridinium on mitochondrial swelling and membrane potential formation.”
“Serotonin and melatonin decreased the attenuation of synaptosomal Ca(2+) uptake induced by either 6-OHDA alone or iron plus ascorbate.”