Isotretinoin and FoxO1: A scientific hypothesis
Oral isotretinoin (13-cis retinoic acid) is the most effective drug in the treatment of acne and restores all major pathogenetic factors of acne vulgaris. isotretinoin is regarded as a prodrug which after isomerizisation to all-trans-retinoic acid (ATRA) ...
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Moreover, like an amplification loop, AR receptor signaling increased IGF-1-expression and IGF-1/IGF-1 receptor (IGF1R)-signaling in the ventral prostate gland.35 Oral isotretinoin treatment has recently been shown to decrease serum IGF-1 levels,36 which may decrease AR-mediated gene expression. Furthermore, decreased AR protein levels have been observed in skin of male acne patients after oral isotretinoin treatment.37 These data imply that isotretinoin treatment may downregulate the transcriptional activity of AR by increasing the nuclear concentration of the AR cosuppressor FoxO1. Furthermore, the isotretinoin-induced decrease of IGF-1 serum levels may impair IGF-1/PI3K/Akt-mediated nuclear export of FoxO1. Moreover, IGF-1 is regarded as an androgen-dependent stimulator of 5α-reductase activity.38 In fact, experimental evidence has been provided for decreased androgen 5α-reduction in skin and liver of men with severe acne after oral isotretnoin treatment.
As bitter as this sounds, i don't think this study holds some truth. My uncle for example, is the tallest guy in our whole family tree and he took also Accutane when he was in HS. I mean, who knows at the end but for me for example...
I don't think 3 doses of Tane damaged my IGF-1 expression on a epigenetic level... Although i have permanent sexual side effects from it... The androgen receptor downregulation part holds some truth, i just hope it was tissue spesific rather than systemic, like prostate, since i still have a high libido and can build muscle...