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  2. Hypothalamic–pituitary–adrenal axis - Wikipedia

    en.wikipedia.org/wiki/Hypothalamic–pituitary...

    Schematic of the HPA axis (CRH, corticotropin-releasing hormone; ACTH, adrenocorticotropic hormone) Hypothalamus, pituitary gland, and adrenal cortex The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus (a part of the brain located below the thalamus), the pituitary gland (a ...

  3. Critical illness–related corticosteroid insufficiency - Wikipedia

    en.wikipedia.org/wiki/Critical_illness–related...

    The hypothalamic-pituitary-adrenal axis (HPA axis), in which the hypothalamus and pituitary gland control adrenal secretions, undergoes profound changes during critical illness. Both very high and very low levels of cortisol have been linked to a poor outcome in intensive care patients. [2]

  4. Cortisone reductase deficiency - Wikipedia

    en.wikipedia.org/wiki/Cortisone_reductase_deficiency

    Dysregulation of hexose-6-phosphate dehydrogenase occurs as a result of gene mutation. [12] Cortisol is important in signalling inhibition of adrenocorticotropic hormone release from the pituitary. Reduced cortisol in circulation activates the H-P-A Axis to produce and release more cortisol, and therefore androgen. [citation needed]

  5. Epigenetics of anxiety and stress–related disorders - Wikipedia

    en.wikipedia.org/wiki/Epigenetics_of_anxiety_and...

    The dysregulation of the HPA axis has been found to be characteristic of several stress disorders, including PTSD. This system works under a negative feedback loop structure. Hence, this HPA axis dysregulation may take the form of amplified negative inhibition and result in down-regulated cortisol levels. [59]

  6. Adrenal gland - Wikipedia

    en.wikipedia.org/wiki/Adrenal_gland

    The HPA axis is an example of a negative feedback system, in which cortisol itself acts as a direct inhibitor of both CRH and ACTH synthesis. The HPA axis also interacts with the immune system through increased secretion of ACTH at the presence of certain molecules of the inflammatory response. [4]

  7. Allostasis - Wikipedia

    en.wikipedia.org/wiki/Allostasis

    The brain is able to overcome negative feedback in these localized systems and continuously evaluate the body's internal set-points. By doing so, the body can regulate its resources and energy storage efficiently. Another key component of allostasis is the brain's perception and subsequent adaptation to chronic stress.

  8. Hypothalamic–pituitary hormone - Wikipedia

    en.wikipedia.org/wiki/Hypothalamic–pituitary...

    They can be classified as a hypothalamic–pituitary axis (HP axis) of which the adrenal (HPA Tooltip hypothalamic–pituitary–adrenal axis), gonadal (HPG Tooltip hypothalamic–pituitary–gonadal axis), thyroid (HPT Tooltip hypothalamic–pituitary–thyroid axis), somatotropic (HPS Tooltip hypothalamic–pituitary–somatotropic axis), and ...

  9. Mental disorders and gender - Wikipedia

    en.wikipedia.org/wiki/Mental_disorders_and_gender

    Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis has been proposed for both men and women. [75] The HPA helps to regulate an individual's stress response by changing the amount of stress hormones released into the body, such as cortisol. [49]