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Related Experiment Video

Updated: Jul 12, 2025

Assessing Whole-Body Lipid-Handling Capacity in Mice
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Low-Dose Dietary Fish Oil Improves RBC Deformability without Improving Post-Transfusion Recovery in Mice.

Christopher Y Kim1, Hannah J Larsen2, Steven L Spitalnik1

  • 1Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York-Presbyterian Hospital, New York, NY 10032, USA.

Nutrients
|October 28, 2023
PubMed
Summary

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Dietary fish oil impacts red blood cell (RBC) health. Low doses improve RBC function and reduce oxidative stress, while high doses impair RBC quality and post-transfusion recovery.

Area of Science:

  • Hematology
  • Nutrition Science
  • Biochemistry

Background:

  • Long-chain polyunsaturated fatty acids (LC-PUFAs) influence red blood cell (RBC) rheology.
  • Dietary LC-PUFAs integrate into RBC membranes, enhancing deformability, fluidity, and hydration.

Purpose of the Study:

  • To investigate the dose-dependent effects of dietary fish oil (FO) on RBC quality and function in mice.
  • To evaluate the impact of FO on RBC deformability, filterability, and post-transfusion recovery (PTR) after cold storage.

Main Methods:

  • Female C57BL/6J mice were fed diets with varying FO concentrations for 8 weeks.
  • RBC deformability, filterability, and PTR were assessed before and after cold storage.
  • Lipidomics and lipid peroxidation markers were analyzed in fresh and stored RBCs.
Keywords:
RBCROSdeformabilityerythrocytesfish oillipid peroxidationoxidative stressstorage lesionsupplementtransfusion

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Main Results:

  • High-dose FO (50%, 100%) reduced RBC quality, including lifespan and deformability, and decreased 24-hour PTR post-storage.
  • Low-dose FO (6.25-12.5%) improved fresh RBC filterability and reduced lipid peroxidation in stored RBCs.
  • Low-dose FO enhanced RBC deformability and reduced oxidative stress, but did not improve PTR of stored RBCs.

Conclusions:

  • Dietary FO exhibits dose-dependent effects on RBCs; low doses offer benefits, while high doses are detrimental.
  • Low-dose FO supplementation may benefit endurance athletes and patients with perfusion-related conditions like peripheral vascular disease.
  • Further research is needed to optimize FO intake for maximizing RBC benefits without adverse effects.