Why the study?
Does hindlimb unweighting alter the vasoreactivity of peripheral arterial vessels in a rat model?
Population
Rat hindlimb unweighting (HU) model (isolated abdominal and thoracic aortic rings)
Comparison
Hindlimb unweighting (HU) vs Control rats (implied by 'between groups')
Design
Preclinical
Authors
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Hypothesis-generating for orthostatic intolerance mechanisms in microgravity; does not support clinical changes without human data.
Does hindlimb unweighting alter the vasoreactivity of peripheral arterial vessels in a rat model?
Hindlimb unweighting in rats diminishes the vasoconstrictor properties of the aorta, suggesting a mechanism for orthostatic intolerance following prolonged weightlessness.
Delp et al. (1993) studied this question.
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