The impairment of the negative feedback was hypothesized to be due to the diminished sensitivity of the glucocorticoid receptors (the glucocorticoid resistance theory) secondary to reduced receptor function and expression, shown in large number of experimental, biological and molecular studies (258)
Injectable GHK-Cu vs Topical: Why the Source and Route Change Everything The consumer market for copper peptide serums is large
They can cause adverse effects
Odisio, BC, Albuquerque, J, Lin, YM, Anderson, BM, OConnor, C, Rigaud, B, Briones-Dimayuga, M, Jones, AK, Fellman, B, Huang, SY, Kuban, JD, Metwalli, ZA, Sheth, RA, Habibollahi, P, Patel, MN, Shah, KY, Cox, V, Kang, HC, Morris, VK, Kopetz, S , Javle, M, Kaseb, A, Tzeng, CW, Cao, HT, Newhook, TE, Chun, YS, Vauthey, JN, Gupta, S, Paolucci, I, Brock, K