Ghrelin Has Anti-Inflammatory Effects: Suppressing Cytokines in Human Immune Cells
Ghrelin inhibited leptin- and activation-induced pro-inflammatory cytokine production (IL-1β, IL-6, TNF-α) in human monocytes and T-cells through GHS-R, revealing a novel anti-inflammatory role for the hunger hormone.
Quick Facts
What This Study Found
Ghrelin inhibited leptin-induced and activation-induced IL-1β, IL-6, and TNF-α production in human monocytes and T-cells through functional GHS-R on immune cells, establishing an anti-inflammatory role that opposes leptin's pro-inflammatory effects.
Key Numbers
How They Did This
In-vitro study. Human monocytes and T-cells treated with ghrelin ± leptin or activation stimuli. Pro-inflammatory cytokine production measured. GHS-R expression on immune cells confirmed.
Why This Research Matters
The ghrelin-leptin opposition extends to inflammation: ghrelin (hungry) suppresses inflammation while leptin (fed) promotes it. This metabolic-immune connection has implications for inflammatory diseases and obesity-related inflammation.
The Bigger Picture
Obesity (high leptin, low ghrelin) creates a pro-inflammatory state. This study provides the molecular mechanism: the ghrelin-leptin balance directly controls immune cell inflammation.
What This Study Doesn't Tell Us
In-vitro immune cell study. The physiological significance of ghrelin's anti-inflammatory effect at circulating concentrations needs in-vivo confirmation.
Questions This Raises
- ?Could ghrelin agonists treat inflammatory diseases?
- ?Does obesity's low ghrelin/high leptin state drive chronic inflammation?
- ?Would ghrelin supplementation reduce obesity-related inflammation?
Trust & Context
- Key Stat:
- Anti-inflammatory hunger Ghrelin (the hunger hormone) actively suppresses inflammatory cytokines in immune cells — being hungry is anti-inflammatory, being fed is pro-inflammatory
- Evidence Grade:
- Moderate evidence from a well-designed in-vitro study with human immune cells, receptor confirmation, and direct ghrelin-leptin opposition demonstrated.
- Study Age:
- Published in 2004. Ghrelin's anti-inflammatory properties have been extensively confirmed and have implications for inflammatory diseases and critical illness.
- Original Title:
- Ghrelin inhibits leptin- and activation-induced proinflammatory cytokine expression by human monocytes and T cells.
- Published In:
- The Journal of clinical investigation, 114(1), 57-66 (2004)
- Authors:
- Dixit, Vishwa Deep(3), Schaffer, Eric M(2), Pyle, Robert S, Collins, Gary D, Sakthivel, Senthil K, Palaniappan, Ravichandran, Lillard, James W, Taub, Dennis D
- Database ID:
- RPEP-00904
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
Is being hungry anti-inflammatory?
At the cellular level, yes. Ghrelin (which rises when you're hungry) actively suppresses inflammatory molecules in immune cells. This may partly explain why fasting and calorie restriction reduce inflammation.
Does this explain inflammation in obesity?
It contributes. Obesity features high leptin (pro-inflammatory) and low ghrelin (less anti-inflammation). This hormonal imbalance creates a chronic inflammatory state — the metabolic roots of obesity-related inflammation.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-00904APA
Dixit, Vishwa Deep; Schaffer, Eric M; Pyle, Robert S; Collins, Gary D; Sakthivel, Senthil K; Palaniappan, Ravichandran; Lillard, James W; Taub, Dennis D. (2004). Ghrelin inhibits leptin- and activation-induced proinflammatory cytokine expression by human monocytes and T cells.. The Journal of clinical investigation, 114(1), 57-66.
MLA
Dixit, Vishwa Deep, et al. "Ghrelin inhibits leptin- and activation-induced proinflammatory cytokine expression by human monocytes and T cells.." The Journal of clinical investigation, 2004.
RethinkPeptides
RethinkPeptides Research Database. "Ghrelin inhibits leptin- and activation-induced proinflammat..." RPEP-00904. Retrieved from https://rethinkpeptides.com/research/dixit-2004-ghrelin-inhibits-leptin-and
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.