What question did this study set out to answer?

This research aims to understand how platelets interact with endothelial cells during hypercholesterolemia and contribute to atherosclerosis.

June 15, 2002BloodOpen Access

Endothelial von Willebrand factor recruits platelets to atherosclerosis-prone sites in response to hypercholesterolemia

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Population

Hypercholesterolemic rabbits and human platelets/endothelial cells

Comparison

0.125% cholesterol diet for 3 to 12 months and… vs Control rabbits and control in vitro studies

Design

Preclinical

Follow-up

3 to 12 months

Authors

GTGregor TheilmeierCarl von Ossietzky Universität Oldenburg CMCarine MichielsUniversity of Namur ESErik SpaepenUniversity of Namur

Discussion

Member takes

Implication

May prime early platelet recruitment via vWF in hypercholesterolemia; hypothesis-generating in rabbits, requires human validation before clinical relevance.

Key Points

This research aims to understand how platelets interact with endothelial cells during hypercholesterolemia and contribute to atherosclerosis.
Used an in vivo platelet homing assay in hypercholesterolemic rabbits to track platelet adhesion.
Studied platelet and aortic endothelial cell activation in an ex vivo flow chamber and perfusion studies.
Analyzed cholesterol diet effects on plaque formation over 3 to 12 months.
Endothelial cells expressed more von Willebrand factor and recruited 5-fold more platelets after 3 months (P <.05).
Platelet recruitment likelihood increased from 18% to 56% at 3-month ostia compared to controls (P <.0001).
Platelet adhesion in ex vivo studies was 8.4-fold higher at 3-month aortas versus control (P <.01).

Structured PICO

Population

Hypercholesterolemic rabbits and human platelets/endothelial cells

Intervention

0.125% cholesterol diet for 3 to 12 months (in vivo) and in vitro perfusion studies

Comparator

Control rabbits and control in vitro studies

Outcome

Platelet adhesion and recruitment to plaque predilection sitessurrogate

Hypercholesterolemia primes platelets for recruitment to lesion-prone sites via von Willebrand factor, GPIb alpha, and P-selectin before atherosclerotic lesions are detectable.

Cite This Study

Theilmeier et al. (2002) studied this question.

synapsesocial.com/papers/6a7103ff31a3df8243294005 https://doi.org/10.1182/blood.v99.12.4486

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Implication

May prime early platelet recruitment via vWF in hypercholesterolemia; hypothesis-generating in rabbits, requires human validation before clinical relevance.

Endothelial von Willebrand factor recruits platelets to atherosclerosis-prone sites in response to hypercholesterolemia

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Endothelial von Willebrand factor recruits platelets to atherosclerosis-prone sites in response to hypercholesterolemia

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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