Figure 8.
Mice with liver-specific inactivation of IGF-I displayed reduced prostate weight. The clearly decreased prostate weight in mice with liver-specific IGF-I KO associated with decreased mRNA and protein levels of the AR in the ventral prostate. Thus, liver-specific IGF-I deletion reduces the number of ARs expressed in the prostate (right panel). Testosterone from the testicles is then less effective in increasing prostate size. This could, hence, be a mechanism for circulating IGF-I to converge with the androgenic pathway in the regulation of prostate size.
