What does this research mean for the field?

Omega-3 supplementation increased serum Resolvin E1 levels and improved vascular smooth muscle function in rats treated with doxorubicin, despite persistent oxidative stress. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the effect of omega-3 fatty acids on vascular structure and regulation in rats undergoing doxorubicin treatment.

February 8, 2026European Heart Journal

Influence of the 3-omega fatty acids supplementation on the structure, regulation and vascular function of rats chronically treated with doxorubicin

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Key result

Omega-3 improves aortic smooth muscle function but fails to prevent doxorubicin-induced endothelial dysfunction.

Why the study?

Vascular remodeling from endothelial dysfunction is an early effect of doxorubicin, but the impact of omega-3 fatty acids on doxorubicin-induced vascular injury is unknown.

Does omega-3 fatty acid supplementation improve vascular function and reduce oxidative stress in rats treated with doxorubicin?

Population

Sixty male Wistar rats

Comparison

Control vs Dox vs omega-3 vs Dox + omega-3

Design

Animal experimental study

Follow-up

Six weeks

Authors

MMM Gaiato MonteUniversidade Estadual Paulista (Unesp)MSM L Santos Da SilvaUniversidade Estadual Paulista (Unesp)CTC J ToghiUniversidade Estadual Paulista (Unesp)

Discussion

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Implication

Omega-3 does not prevent doxorubicin endothelial dysfunction in rats; leaves open whether pro-resolving mediators confer vascular protection in anthracycline models.

Key Points

To evaluate the effect of omega-3 fatty acids on vascular structure and regulation in rats undergoing doxorubicin treatment.
Utilized 60 male Wistar rats divided into four groups: Control, Dox, Omega-3, and Dox + Omega-3.
Administered omega-3 (400 mg/kg) daily for six weeks to the O3 and DO3 groups, while administering doxorubicin (4 mg/kg) weekly to the D and DO3 groups.
Measured vascular function, oxidative stress parameters, and levels of Resolvin E1 and D1 after six weeks of treatment.
Increased contraction in the vascular rings from the omega-3 and doxorubicin groups.
Endothelium-dependent relaxation was impaired in the D and DO3 groups.
Omega-3 supplementation increased serum Resolvin E1 and catalase activity but did not fully counteract doxorubicin's oxidative stress effects.

Structured PICO

Does omega-3 fatty acid supplementation improve vascular function and reduce oxidative stress in rats treated with doxorubicin?

Population

60 male Wistar rats

Intervention

Omega-3 fatty acids 400 mg/kg daily by gavage for 6 weeks, with doxorubicin 4 mg/kg intraperitoneal once a week from week 3 to 6

Comparator

Control (filtered water + saline), Doxorubicin alone (filtered water + doxorubicin), or Omega-3 alone (omega-3 + saline)

Outcome

Vascular function (potassium chloride-induced contraction, endothelium-dependent relaxation), oxidative stress, and Resolvin E1/D1 levelssurrogate

In a rat model, omega-3 fatty acid supplementation increased pro-resolving mediators but did not protect against doxorubicin-induced vascular endothelial dysfunction or oxidative stress.

Cite This Study

Monte et al. (2025) studied this question. Omega-3 increased serum Resolvin E1 and catalase activity and improved aortic smooth muscle function but did not prevent doxorubicin-induced endothelial dysfunction and oxidative stress.

synapsesocial.com/papers/698828ab0fc35cd7a88484ef https://doi.org/10.1093/eurheartj/ehaf784.4119

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Implication

Omega-3 does not prevent doxorubicin endothelial dysfunction in rats; leaves open whether pro-resolving mediators confer vascular protection in anthracycline models.

Influence of the 3-omega fatty acids supplementation on the structure, regulation and vascular function of rats chronically treated with doxorubicin

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Influence of the 3-omega fatty acids supplementation on the structure, regulation and vascular function of rats chronically treated with doxorubicin

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

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