Cited by 300Stress Responses and CortisolCancer, Stress, Anesthesia, and Immune ResponseVagus Nerve Stimulation Research

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Immunology of Stress: A Review Article

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Alotiby, Amna·2024·Journal of Clinical Medicine

Abstract

Stress significantly impacts the immune system, affecting susceptibility to illness and overall health. This review examines the intricate relationship between stress and the immune system, offering insights having practical implications for health and disease prevention. Stress can significantly trigger molecular and immune modulation, affecting the distribution and trafficking of immune cells in various organs and altering their composition in the blood. The review delves into two key pathways connecting stress and immunity: the hypothalamic–pituitary–adrenal (HPA) axis and the sympathetic nervous system. Stress activates the neuroendocrine system and triggers microglia in the brain, releasing stress hormones and neurotransmitters that modulate the function and movement of immune cells. Acute stress can temporarily strengthen immunity and promote protection during infection; in contrast, chronic stress dysregulates or inhibits immune functions. Chronic stress causes an increase in cortisol levels through the HPA axis, ultimately suppressing the immune response. Recognizing stress triggers and implementing effective stress management techniques can significantly impact individuals’ well-being. This review indicates that immune cells express genes differentially in response to stress, suggesting individual variabilities in the immune response against stress. This underscores the need for a personalized approach to stress management. This review also highlights the potential link between chronic stress and autoimmune disorders and warrants further investigation.

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Crossref · 10.3390/jcm13216394

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Figure 1 Pathways connecting stress to immune function. Stress activates the HPA axis and SNA, releasing catecholamines (noradrenaline) and glucocorticoids. These hormones alter immune cell behavior, increasing inflammatory cytokines and redistributing immune cells. This has effects on organs like the spleen and gastrointestinal tract, potentially influencing the microbiome. Abbreviations: IL: interleukin; Th17: T helper lymphocyte 17; CXCL12: homeostatic chemokine ligand; β2/β3-AR: β2/β3-adrenoceptors; Ach: acetylcholine; α7nAChR: α7 nicotinic acetylcholine receptor; HPA: hypothalamic–pituitary–adrenal axis; SNS: sympathetic nervous system; NA: noradrenaline; GC: glucocorticoids. Adapted from Ishikawa and Furuyashiki (2022) [36].
Figure 1 Pathways connecting stress to immune function. Stress activates the HPA axis and SNA, releasing catecholamines (noradrenaline) and glucocorticoids. These hormones alter immune cell behavior, increasing inflammatory cytokines and redistributing immune cells. This has effects on organs like the spleen and gastrointestinal tract, potentially influencing the microbiome. Abbreviations: IL: interleukin; Th17: T helper lymphocyte 17; CXCL12: homeostatic chemokine ligand; β2/β3-AR: β2/β3-adrenoceptors; Ach: acetylcholine; α7nAChR: α7 nicotinic acetylcholine receptor; HPA: hypothalamic–pituitary–adrenal axis; SNS: sympathetic nervous system; NA: noradrenaline; GC: glucocorticoids. Adapted from Ishikawa and Furuyashiki (2022) [36].CC BY · PubMed Central
Figure 2 Effects of acute and chronic stress on the immune system. Acute stress temporarily enhances immune responses by activating immune cells, while chronic stress suppresses immune function, leading to increased inflammation and greater susceptibility to illness.
Figure 2 Effects of acute and chronic stress on the immune system. Acute stress temporarily enhances immune responses by activating immune cells, while chronic stress suppresses immune function, leading to increased inflammation and greater susceptibility to illness.CC BY · PubMed Central

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  1. Figueiredo, 2018, Stress and the Immune System: The Role of the HPA Axis, Curr. Neuropharmacol., 16, 1

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Metadata

Authors
Alotiby, A.
Affiliations
Umm al-Qura University (SA)
Corresponding author
Alotiby, Amna
Venue
Journal of Clinical Medicine
Publisher
MDPI AG
Published
2024-10-25
Volume
13
Issue
21
Pages
6394
ISSN
2077-0383 (ISSN-L)
OpenAlex
W4403749058
Cited by
253
References
51
Citations by year
2026: 145 · 2025: 108
FWCI
9.71
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Stress, Anesthesia, and Immune Response
  • Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
Keywords
stress, immune system, hypothalamic-pituitary-adrenal axis, sympathetic nervous system, cortisol, chronic stress, acute stress, immune cell trafficking, neuroendocrine-immune interaction, microglia, stress hormones, stress management, autoimmune disease, immune gene expression

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