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HPG Axis Reactivation

Meaning

HPG Axis Reactivation is a specific therapeutic objective aimed at restoring the endogenous, pulsatile function of the Hypothalamic-Pituitary-Gonadal (HPG) axis, particularly after a period of suppression or functional dormancy. This strategy is commonly employed in clinical scenarios like treating secondary hypogonadism or restoring fertility following the cessation of exogenous hormone therapy or certain drug regimens. Successful reactivation requires the resumption of GnRH pulsatility from the hypothalamus, leading to appropriate downstream signaling to the pituitary and gonads. It is a nuanced process that seeks to return the body to its self-regulating hormonal state.