A clinical condition characterized by the inadequate function or complete cessation of signaling between the nervous system and the endocrine system, typically involving the hypothalamic-pituitary axis, leading to systemic hormonal deficiencies. This failure disrupts the finely tuned feedback loops that govern stress response, metabolism, growth, and reproduction, resulting in profound physiological dysregulation.
Origin
The term is rooted in classical neuroendocrinology, recognizing the integrated nature of the nervous and endocrine systems. “Failure” denotes a pathological breakdown in this crucial communication system, which can arise from structural damage, autoimmune attack, or chronic functional overload.
Mechanism
Neuroendocrine failure often manifests as a breakdown in the pulsatile release of hypothalamic releasing hormones, such as GnRH or CRH, which subsequently impairs the pituitary gland’s ability to secrete tropic hormones like LH, FSH, or ACTH. Without these tropic signals, peripheral endocrine glands, such as the gonads or adrenal cortex, cease or severely reduce their hormone production, leading to the clinical syndrome of systemic hormonal deficiency.
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