MC3T3-E1 cells are murine calvarial osteoblasts, they come from mouse skull not a human jaw. And also murine osteoblasts express 5AR differently than us.
it proves osteoblasts [UWSL]CAN respond to DHT if DHT is PRESENT, but it doesn't say whether DHT is present in human jaw during fetal development. [/UWSL][UWSL]human mandibular osteoblasts in vivo arent exposed to this conc (0.1ng/ml) because they dont express 5AR.[/UWSL]
[UWSL]and from what ive read from that article, the researchers added exogenous DHT directly to the culture medium at 0.1ng/ml. this bypasses the entire question of whether human mandibular osteoblasts produce DHT from T.[/UWSL]
[UWSL] "could be the in vitro basis for the efficacy of 5ฮฑ-DHT in the treatment of androgen-deficient male osteoporosis."[/UWSL]
[UWSL]osteoporosis is a condition of systemic androgenic deficiency. in a man with no T (hypogonadal), both T and DHT are low. giving exo DHT provides SOME androgenic signal to bone, but this in a way is just a rescue.[/UWSL]