Identification of a regulatory loop for the synthesis of neurosteroids: a steroidogenic acute regulatory protein-dependent mechanism involving hypothalamic-pituitary-gonadal axis receptors
Another implication of our results is that the change in expression of brain hormone receptors as a result of peripheral changes in sex steroids and gonadotropins may lead to altered signaling by those receptors involved in functions other than the regulation of NSS production. For example, the E2 and P4 induced decrease in GnRHR expression may modulate neuronal transmission, as GnRH1 and analogues can enhance synaptic transmission via iono-tropic glutamate receptors (Lu et al. 1999). Similarly, P4 induced suppression of ERĪ± expression is consistent with previous findings in the rat uterus (Kraus and Katzenellenbogen 1993; Katzenellenbogen 2000), and indicate that crosstalk between these two sex steroids may play an important role in both the regulation of ERĪ± signaling and progesterone receptor signaling in the brain.
At the end of the day tribulus can help to the recovery after Triptorelin but seem that what probably make the difference was GnRH