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Directly from Pharmacology of CPA (Wiki): But unlike silent antagonists of the AR like nonsteroidal antiandrogens such as flutamide, bicalutamide, and enzalutamide, CPA, by virtue of its slight intrinsic activity at the AR, may be unable to fully inhibit androgenic signaling in the body, which may persist to an extent in some tissues such as the prostate gland.
Source:https://en.m.wikipedia.org/wiki/Pharmacology_of_cyproterone_acetate
Now that I read again the whole thing, I believe that this partial agonist, it means that the AR signal it will still be activated. It will get some binding though, but again it won't be fully ''binded'', like NSAAs (Bica for example). So, I believe that AR upregulation it is not very possible to happen? Please correct me if I am wrong here. Thanks
(An escape or recovery phenomenon, in which testosterone levels increase over time, has been observed with long-term CPA monotherapy.In one study in aged men with prostate cancer, testosterone levels were initially suppressed by 70%, but increased to 50% of baseline levels between 6 and 12 months, remaining stable thereafter up to 24 months of therapy.).I believe that this has to do with the prostate cancer cells and the partial agonist effect, but this again is referring to cancer cells, instead of healthy cells for example.)
Forgive me If I am bothering or being annoying. I am just looking for some answers and understand some things. Thank you.
Source:https://en.m.wikipedia.org/wiki/Pharmacology_of_cyproterone_acetate
Now that I read again the whole thing, I believe that this partial agonist, it means that the AR signal it will still be activated. It will get some binding though, but again it won't be fully ''binded'', like NSAAs (Bica for example). So, I believe that AR upregulation it is not very possible to happen? Please correct me if I am wrong here. Thanks
(An escape or recovery phenomenon, in which testosterone levels increase over time, has been observed with long-term CPA monotherapy.In one study in aged men with prostate cancer, testosterone levels were initially suppressed by 70%, but increased to 50% of baseline levels between 6 and 12 months, remaining stable thereafter up to 24 months of therapy.).I believe that this has to do with the prostate cancer cells and the partial agonist effect, but this again is referring to cancer cells, instead of healthy cells for example.)
Forgive me If I am bothering or being annoying. I am just looking for some answers and understand some things. Thank you.
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