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Published on: July 16, 2021
Macrophage migration inhibitory factor: controller of systemic inflammation
Douglas F Larson1, Katherine Horak
1Sarver Heart Center and Departments of Surgery and Medical Pharmacology, College of Medicine, The University of Arizona, Tucson, Arizona, USA. dflarson@u.arizona.edu
Abstract:
Macrophage migration inhibitory factor (MIF) is a cytokine that is secreted by the anterior pituitary and immune cells in response to surgical stress, injury, and sepsis. This cytokine appears to be a critical regulator of the inflammatory pathways, leading to systemic inflammatory response syndrome and subsequent multiple organ dysfunction syndrome. This report provides an integrated scheme describing the manner by which MIF controls the neurohormonal response and the adaptive immune system, namely the T-helper (Th)1 and Th2 lymphocytes, which results in the release of pro-inflammatory cytokines and the anti-inflammatory cytokine interleukin-10. The development of systemic inflammatory response syndrome and subsequent development of multiple organ dysfunction syndrome appear to be related to MIF levels and the balance of Th1 and Th2 function.
Insights
Macrophage migration inhibitory factor (MIF) regulates inflammatory responses to stress and injury. MIF levels and T-helper cell balance impact systemic inflammation and organ dysfunction.
Area of Science:
- Immunology
- Endocrinology
- Critical Care Medicine
Background:
- Macrophage migration inhibitory factor (MIF) is a key cytokine involved in immune responses.
- MIF is secreted by the anterior pituitary and immune cells during surgical stress, injury, and sepsis.
- It plays a critical role in regulating inflammatory pathways.
Discussion:
- MIF influences the neurohormonal response and adaptive immunity, specifically T-helper (Th)1 and Th2 lymphocytes.
- This regulation leads to the release of both pro-inflammatory cytokines and the anti-inflammatory cytokine interleukin-10.
- The interplay between MIF and Th1/Th2 balance is crucial for managing inflammatory cascades.
Key Insights:
- MIF is a central mediator in the development of systemic inflammatory response syndrome (SIRS).
- The cytokine's levels are closely linked to the progression of multiple organ dysfunction syndrome (MODS).
- Balancing Th1 and Th2 immune responses is critical in mitigating MIF-induced inflammation.
Outlook:
- Further research into MIF's role could reveal novel therapeutic targets for inflammatory conditions.
- Understanding the MIF-mediated pathways may lead to improved management strategies for sepsis and critical illness.
- Investigating the precise mechanisms of Th1/Th2 modulation by MIF could offer new avenues for immune system regulation.
