BRS3-FM3-PM8 - Eicosanoid / SPM Balance
1. Definition
Balancing arachidonic-acid-derived inflammatory mediators against EPA/DHA-derived specialized pro-resolving mediators.
This PM governs the balance between pro-inflammatory eicosanoids and pro-resolving lipid mediators, not simple immune suppression.
2. Target Functional Outcome / Phenome
These mappings are translational relationships, not single-mechanism outcome claims. Phenomes are emergent functional patterns supported by multiple interacting PMs across the BRAIN Framework.
No direct functional outcome relationship currently mapped.
3. Intervention Breakdown
Food-State Dominant
4. Functional Role
↑ pro-resolving mediator bias; ↓ pro-inflammatory eicosanoid dominance
5. Mechanistic Basis
Summary
Inflammation termination depends on lipid mediators that actively resolve rather than merely suppress immune activity. EPA and DHA substrate availability shapes whether signalling bias moves toward specialized pro-resolving mediators within BRS3(FM3) - Inflammation Resolution Capacity.
Eicosanoids, omega-3 balance, and inflammation resolution
(Lipid mediator balance)
Inflammatory tone is shaped by the substrate pool available for eicosanoids and specialized pro-resolving mediators (SPMs). Resolution pathways are biochemically distinct from simple inflammatory blockade → Serhan & Petasis (2011) [1]
(Fatty-acid substrate competition)
Arachidonic-acid-derived pro-inflammatory mediators and EPA/DHA-derived resolution pathways compete for enzymatic processing within shared lipid-signalling networks. Chronic omega-6 dominance or oxidized-fat exposure can skew mediator output → Simopoulos (2011) [2]
(Boundaries of the mechanism)
Downstream cytokine-network readouts are handled by BRS3-FM3-PM7 - Cytokine Network Modulation. Membrane PUFA protection upstream belongs to BRS3-FM2-PM5 - Lipid Peroxidation Control. Transcriptional inflammatory control is represented by BRS3-FM1-PM1 - NF-kB Signalling Regulation.
(Integration within BRS3)
This PM anchors resolution-oriented lipid signalling within BRS3(FM3), drawing on BRS3(KC3) - Essential Fatty Acid Balance.
5.1 Evidence Highlights
Introduction/Summary
The SPM resolution framework is well established. The studies below highlight dietary fatty-acid findings that refine how resolution-oriented lipid signalling is interpreted in practice.
Evidence highlights — resolution lipid mediators
- Specialized pro-resolving mediators derived from omega-3 substrates actively terminate inflammation rather than only blocking it → Serhan & Petasis (2011) [1]
- Evolutionary and dietary omega-6:omega-3 imbalance shifts lipid-mediator output toward pro-inflammatory dominance → Simopoulos (2011) [2]
- Omega-3 interventions show measurable effects on inflammatory biomarker networks relevant to resolution capacity → Ferguson et al. (2014) [3]
6. Connected BRS3 Mechanisms
6.1 Overarching Functional Mechanism
6.2 Connected Primary Mechanisms
7. Connected Mechanisms
- None listed
8. Dietary Levers
8.1 Direct Dietary Levers
- EPA/DHA ← oily fish, fish roe, algal oil
- Whole-diet fatty acid balance ← nuts, seeds, minimally processed fat sources
- Lower excess oxidized omega-6 load ← reduced fried and degraded oil exposure
8.2 Cofactors and Supporting Inputs
- AA balance
- DHA
- EPA
- selenium
8.3 KCs (Key Constraints)
9. Lifestyle Levers
Lifestyle
- Repeated weekly marine-fat exposure matters more than isolated dosing.
- Lower inflammatory load from broader diet and lifestyle context helps preserve resolution capacity once substrate support is present.
10. Scoreable Inputs & Modulation Signals
This PM is scoreable through omega-3 delivery and fatty-acid-balance signals relevant to inflammation resolution.
Scoreable Input Categories
| Input Category | Example Inputs | PM6 Relevance |
|---|---|---|
| Functional Property Potentials | marine_omega3_pattern; fatty_acid_balance; lower_oxidized_oil_load | May support pro-resolving mediator bias. |
| Realised Functional States | oily_fish_pattern; balanced_pufa_context | Reflect practical SPM-supportive states. |
| Preparation Transformations | gentle_fat_cooking; lower_reused_oil_exposure | May help preserve lipid quality relevant to this PM. |