Cited by 1,213Adipokines, Inflammation, and Metabolic DiseasesImmune Response and InflammationGene Regulatory Network Analysis

Homeostasis, Inflammation, and Disease Susceptibility

Open access
Kotas, Maya E., Medzhitov, Ruslan·2015·Cell

Abstract

While modernization has dramatically increased lifespan, it has also witnessed the increasing prevalence of diseases such as obesity, hypertension, and type 2 diabetes. Such chronic, acquired diseases result when normal physiologic control goes awry and may thus be viewed as failures of homeostasis. However, while nearly every process in human physiology relies on homeostatic mechanisms for stability, only some have demonstrated vulnerability to dysregulation. Additionally, chronic inflammation is a common accomplice of the diseases of homeostasis, yet the basis for this connection is not fully understood. Here we review the design of homeostatic systems and discuss universal features of control circuits that operate at the cellular, tissue, and organismal levels. We suggest a framework for classification of homeostatic signals that is based on different classes of homeostatic variables they report on. Finally, we discuss how adaptability of homeostatic systems with adjustable set points creates vulnerability to dysregulation and disease. This framework highlights the fundamental parallels between homeostatic and inflammatory control mechanisms and provides a new perspective on the physiological origin of inflammation.

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Crossref · 10.1016/j.cell.2015.02.010

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  • Chronic low-grade inflammation in the kidneys impairs normal repair mechanisms after injury and promotes immunosenescence and organ damage.

    “Chronic low-grade inflammation in the kidneys can impair the normal repair mechanisms that occur following injury. This inflammation hampers intrinsic cellular repair mechanisms following injury and promotes immunosenescence and organ damage.151,152”

    From Inflammation and aging: signaling pathways and intervention therapies (2023) · cites this paper as [151]

    The 'Inflammation and homeostatic circuits' section says persistent inflammation can disrupt homeostatic controls and contribute to chronic pathological states. It does not establish that low-grade inflammation in the kidneys impairs repair after injury or promotes immunosenescence and organ damage; searches for kidney, immunosenescence, and repair after injury did not find those links. Page numbers were unavailable in our copy. (LLM, conf=0.82)

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  • Inflammation is an evolutionarily conserved process that activates immune and non-immune cells to protect the host from pathogens and promote tissue repair.

    “Inflammation is an evolutionarily conserved process characterized by the activation of immune and non-immune cells that protect the host from bacteria, viruses, toxins and infections by eliminating pathogens and promoting tissue repair and recovery2,9.”
  • Depending on the inflammatory response, metabolic and neuroendocrine changes can occur to conserve energy and direct nutrients to the activated immune system.

    “Depending on the degree and extent of the inflammatory response, including whether it is systemic or local, metabolic and neuroendocrine changes can occur to conserve metabolic energy and allocate more nutrients to the activated immune system9–12.”
  • A shift from short-lived to long-lived inflammation can break immune tolerance and alter tissues, organs, and cellular physiology, raising the risk of non-communicable diseases in both young and older people.

    “Shifts in the inflammatory response from short- to long-lived can cause a breakdown of immune tolerance9,15 and lead to major alterations in all tissues and organs, as well as normal cellular physiology, which can increase the risk for various non-communicable diseases in both young and older individuals1,9–11,15,17–21.”
  • A normal inflammatory response is temporally restricted, upregulating inflammatory activity when a threat is present and resolving after the threat passes.

    “A normal inflammatory response is characterized by the temporally restricted upregulation of inflammatory activity that occurs when a threat is present and that resolves once the threat has passed9,13,15.”

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Authors
Kotas, M. E., & Medzhitov, R.
Affiliations
  • Yale University (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Medzhitov, Ruslan
Venue
Cell
Publisher
Elsevier BV
Published
2015-02
Volume
160
Issue
5
Pages
816-827
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2120049814
Cited by
1,213
References
71
Citations by year
2026: 90 · 2025: 124 · 2024: 118 · 2023: 145 · 2022: 150 · 2021: 137 · 2020: 101 · 2019: 110 · 2018: 78 · 2017: 68 · 2016: 63 · 2015: 26
FWCI
10.09
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (UL1TR000142)
  • National Cancer Institute (R01CA157461, CA157461)
  • National Institute of General Medical Sciences (T32GM007205)
  • National Institute of Allergy and Infectious Diseases (AI089771, R01AI089771, R37AI046688, AI046688, R01AI046688)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK071754, R01DK071754)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
Keywords
homeostasis, chronic inflammation, disease susceptibility, set point, dysregulation, obesity, hypertension, type 2 diabetes, chronic disease
MeSH terms
Diabetes Mellitus, Disease Susceptibility, Homeostasis, Humans, Inflammation, Models, Biological

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