Disorders of the adrenal cortex

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

During surgery there is a coordinated response to stress that includes the nervous, endocrine, and immune systems. Inappropriately low response or inappropriately excessive response to stress may lead to disease and possible premature death [1,2]. The hypothalamic–pituitary–adrenal (HPA) axis and the sympathetic nervous system react to stress by releasing hypothalamic CRH and vasopressin (AVP). These hormones synergistically stimulate systemic ACTH secretion, which, in turn, stimulates the adrenal cortexes to secrete glucocorticoids. Central activation of the sympathetic neurons leads to activation of both the systemic sympathetic nervous system and the adrenal medullae [2,3]. The immune system through inflammatory mediators, especially cytokines, stimulates the release of corticotropin-releasing factor from hypothalamic neurons. This central activation of the HPA axis and the direct stimulation of the adrenal glands by the sympathetic system may be a regulatory mechanism for preventing an excessive immune reaction [4,5]. Adrenocorticotropic hormone (ACTH) is released in quick, pulsatile bursts followed by a slower, more sustained rise in cortisol and metabolites [6,7]. Free cortisol is the active hormone and acts directly on tissues [6]. Normal ACTH release and production of cortisol follows a circadian rhythm and is connected to light. It is the highest on awakening in the morning (peaking about 8 hours after the onset of sleep), declines over the day, and is lowest in the middle of the night [7]. The cortisol secretory pattern is usually resistant to acute change. Prolonged bed rest, continuous feeding, or 5 days of fasting, do not alter the rhythm [8]. Occasionally, abrupt time changes of the sleep–awake cycle, as during shift work rotations and jet lag, may have some effect on the 24-hour cortisol patterns [9–11]. Critical illness, chronic inflammatory conditions, chronic insomnia, coronary artery disease, and severe stress often alter the daily rhythm [12–14]. These conditions exert their effect by cytokines, interleukins, and tumor necrosis factors. Circulating interleukin-6 is a potent activator of the HPA axis. By stimulating pituitary ACTH and therefore cortisol, response to inflammation can enhance resistance to inflammatory disease, while a decreased or defective response can increase susceptibility [4,5,13].

Original languageEnglish (US)
Title of host publicationMedical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition
PublisherCambridge University Press
Pages358-365
Number of pages8
ISBN (Print)9780511920660, 9781107009165
DOIs
StatePublished - Jan 1 2010

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Adrenal Cortex
Hydrocortisone
Adrenocorticotropic Hormone
Sympathetic Nervous System
Immune System
Tumor Necrosis Factors
Hormones
Cytokines
Neurons
Bed Rest
Endocrine System
Premature Mortality
Adrenal Medulla
Pituitary Hormones
Interleukins
Corticotropin-Releasing Hormone
Sleep Initiation and Maintenance Disorders
Adrenal Glands
Circadian Rhythm
Vasopressins

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Prescott, P. T. (2010). Disorders of the adrenal cortex. In Medical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition (pp. 358-365). Cambridge University Press. https://doi.org/10.1017/CBO9780511920660.034

Disorders of the adrenal cortex. / Prescott, Pamela T.

Medical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition. Cambridge University Press, 2010. p. 358-365.

Research output: Chapter in Book/Report/Conference proceedingChapter

Prescott, PT 2010, Disorders of the adrenal cortex. in Medical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition. Cambridge University Press, pp. 358-365. https://doi.org/10.1017/CBO9780511920660.034
Prescott PT. Disorders of the adrenal cortex. In Medical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition. Cambridge University Press. 2010. p. 358-365 https://doi.org/10.1017/CBO9780511920660.034
Prescott, Pamela T. / Disorders of the adrenal cortex. Medical Management of the Surgical Patient: A Textbook of Perioperative Medicine, Fifth Edition. Cambridge University Press, 2010. pp. 358-365
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