A nicotinamidase found in humans, known as PBEF, may serve a similar function, and a secreted form of PBEF known as visfatin may help to regulate serum insulin levels.
Unha nicotinamidase atopada en humanos, chamada PBEF pode realizar unha función similar, e unha forma segregada de PBEF chamada visfatina pode axudar a regular os niveis séricos de insulina.