Vasa vasorum neovascularization and lesion distribution among different vascular beds in ApoE-/-/LDL-/- double knockout mice

Alexander C. Langheinrich, Agata Michniewicz, Rainer M. Bohle, Erik L. Ritman

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Objective: To increase understanding of the substantial variation in the incidence and distribution of atherosclerotic lesions among different vascular beds. In view of some evidence that there are different distributions of adventitial vasa vasorum (VV) in different vascular beds, and that this correlates with lesion formation, we explored this possible linkage in apoE-/-/LDL-/- double knockout mice, which develop VV at age beyond 16 weeks. Methods and results: Samples from the aorta, coronary, pulmonary, carotid, and cerebral arteries in apoE-/-/LDL-/- double knockout mice at the age of 16-80 weeks (n = 24) were scanned by micro-CT. Using those 3D images, we characterized plaque volume, vessel luminal diameter and VV luminal volume along the vessels. Results were complemented by histology. Advanced atherosclerotic lesions were found in the aorta, pulmonary artery and carotid artery. Occluded intramyocardial vessels (vessel diameter ∼0.1 mm) with concomitant myocardial infarctions were found without any evidence of adventitial VV neovascularization. VV luminal volume follows the order: aorta > pulmonary arteries > carotid arteries. VV were only observed in atherosclerotic diseased vessels with a lumen diameter > 0.4 mm. No atherosclerotic lesions, and no VV, were observed in cerebral arteries. Conclusion: The spatial heterogeneity in the development of atherosclerotic lesions among different vascular beds is linked to appearance of VV and to vessel lumen diameter.

Original languageEnglish (US)
Pages (from-to)73-81
Number of pages9
JournalAtherosclerosis
Volume191
Issue number1
DOIs
StatePublished - Mar 2007

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Vasa Vasorum
Apolipoproteins E
Knockout Mice
Blood Vessels
Carotid Arteries
Pulmonary Artery
Aorta
Adventitia
Cerebral Arteries
low density lipoprotein inhibitor
Coronary Vessels
Histology
Myocardial Infarction

Keywords

  • Atherosclerosis
  • Imaging
  • Inflammation
  • Micro-CT
  • Vasa vasorum

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Vasa vasorum neovascularization and lesion distribution among different vascular beds in ApoE-/-/LDL-/- double knockout mice. / Langheinrich, Alexander C.; Michniewicz, Agata; Bohle, Rainer M.; Ritman, Erik L.

In: Atherosclerosis, Vol. 191, No. 1, 03.2007, p. 73-81.

Research output: Contribution to journalArticle

Langheinrich, Alexander C. ; Michniewicz, Agata ; Bohle, Rainer M. ; Ritman, Erik L. / Vasa vasorum neovascularization and lesion distribution among different vascular beds in ApoE-/-/LDL-/- double knockout mice. In: Atherosclerosis. 2007 ; Vol. 191, No. 1. pp. 73-81.
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