Key result
A perivascular silastic collar animal model suggests that arterial wall hypoxia following vasa vasorum occlusion may be the initial lesion of atherosclerosis.
This paper proposes the hypothesis that atherosclerosis may originate in the outer layers of the arterial wall due to hypoxia from vasa vasorum occlusion, supported by a perivascular collar animal model.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating from animal models; leaves open vasa vasorum hypoxia as atherosclerosis initiator pending human validation.
Despite many theories, the initiating circumstances for the development of atherosclerosis remain obscure. The development of animal models of atherosclerosis was based upon the different theories of the origins of atherosclerosis which suggested that it originates at the intimal surface of the vessel. A more recent model of atherosclerosis involves perivascular manipulation of the vessel by positioning of a hollow silastic collar around the artery. In this model, several of the features seen in early human atherosclerosis are generated within a period of 7 days. It is hypothesized that arterial wall hypoxia following occlusion of the vasa vasorum may be the initial lesion of atherosclerosis, and hence that in some cases atherosclerosis is a disease of the outer layers of the arterial wall.
No takes yet. Share an insight, caveat, or question.
Loo et al. (2008) conducted a review in Atherosclerosis. Perivascular manipulation with a hollow silastic collar was evaluated. A perivascular silastic collar animal model suggests that arterial wall hypoxia following vasa vasorum occlusion may be the initial lesion of atherosclerosis.
Synapse has enriched 10 related papers. Consider them for comparative context: