A twenty-carbon, two-oxygen arachidonic-acid heavy-atom model appears above separate membrane and generic-cell teaching models.
Fatty-acid teaching reconstruction Editorially reviewed

Arachidonic-acid identity-and-context orientation. Hydrogens are omitted; the plate is not a crystallographic conformation and does not show release, oxidation, eicosanoid synthesis, inflammation, concentration, or treatment effect.

WikiBiome / Microbiome MedicinePubChem-arachidonic-acid-, ChEBI-arachidonic-acid-, and literal-output-audit-informed reconstruction
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Arachidonic Acidbiological-process
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Arachidonic acid (AA) is a 20-carbon omega-6 polyunsaturated fatty acid (20:4n-6) that serves as the primary substrate for prostaglandin and leukotriene synthesis via COX-2 and 5-LOX pathways.

It is the dominant pro-inflammatory lipid mediator—and its balance with anti-inflammatory omega-3 fatty acids (EPA/DHA) determines the inflammatory tone across multiple disease signatures.

Evidence map4 cited passagesInspect provenance +
01
Microbiome Connection

COX-2/NF-kB axis: Metal-driven NF-kB activation upregulates COX-2, increasing arachidonic acid conversion to pro-inflammatory prostaglandin E2 (PGE2)—the same pathway activated by microbial LPS via TLR4.

02
Microbiome Connection

NSAIDs and microbiome: NSAIDs (COX inhibitors blocking AA metabolism) cause gut microbiome disruption and intestinal injury, paradoxically increasing dysbiosis while reducing inflammation.

03
Microbiome Connection

Endometriosis metabolomics: Altered arachidonic acid levels in fecal metabolomics of endometriosis models.

04
Microbiome Connection

Diabetic ED: Fatty acid profiles including AA altered in diabetic erectile dysfunction.

Contents1. Microbiome Connection2. Resolution Pathway3. Cross-References

Microbiome Connection#

COX-2/NF-kB axis: Metal-driven NF-kB activation upregulates COX-2, increasing arachidonic acid conversion to pro-inflammatory prostaglandin E2 (PGE2)—the same pathway activated by microbial LPS via TLR4.[1]Nonsteroidal Anti-Inflammatory Drugs as Therapeutic Allies of the Gut Microbiome on Chronic InflammationFabian Mermans, Evelien Heiremans, Maud Van Belleghem et al. · 2019Open reference 1

NSAIDs and microbiome: NSAIDs (COX inhibitors blocking AA metabolism) cause Gut Microbiome disruption and intestinal injury, paradoxically increasing Dysbiosis while reducing Metal-Driven Inflammation.[1]Nonsteroidal Anti-Inflammatory Drugs as Therapeutic Allies of the Gut Microbiome on Chronic InflammationFabian Mermans, Evelien Heiremans, Maud Van Belleghem et al. · 2019Open reference 1

Endometriosis metabolomics: Altered arachidonic acid levels in fecal metabolomics of endometriosis models.[2]Ni 2020 — Fecal Metabolomics and Gut Microbiota Correlation in Endometriosis MiceZhexin Ni, Shuai Sun, Yanli Bi et al. · 2020Open reference 2 Diabetic ED: Fatty acid profiles including AA altered in diabetic erectile dysfunction.[3]Ben Khedher 2017 — Disturbed Fatty Acids Metabolism in Diabetic Erectile DysfunctionMohamed Raâfet Ben Khedher, Houda Bouhajja, Samia Haj Ahmed et al. · 2017Open reference 3

Resolution Pathway#

Arachidonic acid is also the precursor for lipoxins—pro-resolving mediators that actively terminate inflammation. The balance between pro-inflammatory (prostaglandins) and pro-resolving (lipoxins) AA metabolites depends on the enzymatic context, which metals can disrupt.

Cross-References#

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References 5

Numbered by first appearance in the article, then reconciled with its declared source list.

  1. 1

    Fabian Mermans, Evelien Heiremans, Maud Van Belleghem et al. (2019). Nonsteroidal Anti-Inflammatory Drugs as Therapeutic Allies of the Gut Microbiome on Chronic Inflammation. Facta Universitatis Series Medicine and Biology.

  2. 2

    Zhexin Ni, Shuai Sun, Yanli Bi et al. (2020). Ni 2020 — Fecal Metabolomics and Gut Microbiota Correlation in Endometriosis Mice. American Journal of Reproductive Immunology.

  3. 3

    Mohamed Raâfet Ben Khedher, Houda Bouhajja, Samia Haj Ahmed et al. (2017). Ben Khedher 2017 — Disturbed Fatty Acids Metabolism in Diabetic Erectile Dysfunction. Lipids in Health and Disease.

  4. 4

    Xinyun Bi, Fanghong Li, Shanshan Liu et al. (2017). Bi 2017 — Omega-3 Polyunsaturated Fatty Acids Ameliorate Type 1 Diabetes and Autoimmunity. Journal of Clinical Investigation.

  5. 5

    Martin DA, Bolling BW (2015). A Review of the Efficacy of Dietary Polyphenols in Experimental Models of Inflammatory Bowel Diseases. Food & Function.

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