Hormone Suppression is a targeted clinical strategy involving the use of pharmaceutical agents, surgical intervention, or radiation to intentionally reduce the production or block the action of specific endogenous hormones. This is a powerful therapeutic tool, often employed in oncology to manage hormone-sensitive cancers, such as prostate or breast cancer, or in endocrinology to treat conditions caused by hormone overproduction. The goal is to achieve a controlled, therapeutic reduction in circulating hormone levels to mitigate their biological effects on target tissues.
Origin
The practice of hormone manipulation dates back to the early 20th century with the understanding that certain cancers were hormone-dependent, leading to the use of surgical castration. The term ‘suppression’ became more precise with the development of specific pharmacological agents that could block hormone synthesis or receptor binding, offering a more controlled and reversible approach. It is a cornerstone of modern endocrine therapy.
Mechanism
The mechanism of hormone suppression varies depending on the target, but commonly involves inhibiting key enzymes in the steroidogenesis pathway, such as aromatase inhibitors for estrogen, or using GnRH antagonists to shut down the hypothalamic-pituitary-gonadal axis. Alternatively, some agents act by binding to the hormone receptors, effectively blocking the hormone’s ability to transmit its signal to the cell nucleus. This targeted blockade interrupts the positive feedback loops that drive hormone-dependent processes.
Pulsatile gonadorelin may help restore cognitive function during GnRH agonist therapy by mimicking natural brain signaling and supporting neuronal health.
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