Bilirubin, Copper-Porphyrins, and the Bronze-Baby Syndrome

Controlled in vitro spectroscopic measurements reveal that bilirubin does not photosensitize the degradation of copper-porphyrins, as has been proposed for the mechanism of the bronze-baby syndrome, an uncommon side-effect of phototherapy. Calculations also show that copper-porphyrins are unlikely to cause the bronzing. In conclusion, the copper-porphyrin hypothesis is photochemically implausible. (J Pediatr 2011;158:160-4)