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Related Experiment Video

Updated: Jul 14, 2026

The Isolation of Flowing Mesenteric Lymph in Mice to Quantify In Vivo Kinetics of Dietary Lipid Absorption and Chylomicron Secretion

The Isolation of Flowing Mesenteric Lymph in Mice to Quantify In Vivo Kinetics of Dietary Lipid Absorption and Chylomicron Secretion

Published on: November 30, 2022

Chylomicron remnants: mediators of endothelial dysfunction?

C P D Wheeler-Jones¹

¹Department of Veterinary Basic Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK. cwheeler@rvc.ac.uk

Biochemical Society Transactions

|May 22, 2007

Summary

Dietary lipoproteins, modeled as artificial chylomicron remnant-like particles (CRLPs), promote vascular inflammation and endothelial dysfunction. These particles alter nitric oxide production and activate inflammatory pathways in endothelial cells (ECs).

Related Experiment Videos

Last Updated: Jul 14, 2026

The Isolation of Flowing Mesenteric Lymph in Mice to Quantify In Vivo Kinetics of Dietary Lipid Absorption and Chylomicron Secretion

The Isolation of Flowing Mesenteric Lymph in Mice to Quantify In Vivo Kinetics of Dietary Lipid Absorption and Chylomicron Secretion

Published on: November 30, 2022

Area of Science:

Cardiovascular Biology
Endothelial Cell Function
Lipoprotein Metabolism

Background:

Vascular disease originates from endothelial dysfunction, marked by pro-inflammatory and pro-coagulant changes in endothelial cells (ECs).
Dietary lipoproteins are increasingly recognized for their role in modulating EC function.

Purpose of the Study:

To investigate the molecular mechanisms by which artificial chylomicron remnant-like particles (CRLPs) influence endothelial cell behavior.
To understand how n-6 PUFA-enriched CRLPs affect vasoactive mediator production and intracellular signaling in ECs.

Main Methods:

Utilized in vitro models with artificial chylomicron remnant-like particles (CRLPs).
Analyzed changes in nitric oxide synthesis, eicosanoid release, cyclo-oxygenase-2 expression, adhesion molecule expression, and intracellular signaling pathways (NF-kappaB, MAPKs).

Main Results:

n-6 PUFA-enriched CRLPs induced a pro-inflammatory state in ECs, reducing nitric oxide and altering vasodilator/vasoconstrictor eicosanoid balance.
CRLPs increased cyclo-oxygenase-2, adhesion molecules, and haem oxygenase-1 expression.
CRLPs activated intracellular signaling pathways including NF-kappaB and MAPKs.

Conclusions:

Dietary lipoproteins, represented by CRLPs, directly regulate molecular events in the vascular wall, contributing to endothelial dysfunction.
The composition and oxidation status of CRLPs can modulate their effects on EC behavior.