Does a dopaminergic gene cluster in the prefrontal cortex predict performance indicative of general intelligence in genetically heterogeneous mice?
These results indicate that D1-mediated dopamine signaling in the PFC, possibly through its modulation of working memory, is predictive of general cognitive abilities. Furthermore, these results provide the first direct evidence of specific molecular pathways that might potentially regulate general intelligence.
L-Arginine resulted in a better intestinal adaptation after massive bowel resection. The high levels of epidermal growth factor in body fluids of L-Arginine treated rats could be the explanation for this effect.