Key result
Heparin reduces emboli without improving perfusion, whereas cod liver oil improves perfusion without reducing emboli.
Why the study?
Platelet emboli induced by arterial injury impair the microcirculation, and it is unclear if heparin or dietary cod liver oil reduce emboli or prevent microcirculatory blood flow decrease.
Does heparin or dietary cod liver oil reduce emboli and improve capillary perfusion following arterial injury in a rat model?
Population
29 male Sprague-Dawley rats with thrombogenic iliac artery injury
Comparison
Heparin vs dietary cod liver oil vs no treatment
Design
Preclinical experimental study
Authors
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Animal data urge caution against equating emboli reduction with perfusion gains; extends mechanistic hypotheses on biochemical emboli effects in microcirculation.
Does heparin or dietary cod liver oil reduce emboli and improve capillary perfusion following arterial injury in a rat model?
In a rat model of arterial injury, cod liver oil improved microcirculatory perfusion despite not reducing emboli, suggesting the harmful effects of platelet emboli are biochemically mediated rather than purely mechanical.
Barker et al. (1993) studied Arterial injury-induced emboli and microcirculation impairment (n=29). Heparin or dietary cod liver oil vs. No treatment was evaluated on Number of emboli and capillary perfusion in the downstream microcirculation. Heparin significantly reduced the number of emboli without improving capillary perfusion, whereas dietary cod liver oil improved capillary perfusion without reducing emboli.
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