Proliferative and lipid metabolism response to balloon angioplasty in canine renal arteries

C. Orlandi, J. P. Singh, F. P. Bell, R. G. Schaub

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The mechanisms responsible for reocclusion after percutaneous transluminal angioplasty are still poorly understood. The effects of angioplasty on arterial morphology, deoxyribonucleic acid (DNA) synthesis (3H-thymidine incorporation) and lipid metabolism (14C-oleate incorporation) were studied in renal arteries of 24 male mongrel dogs. Balloon-dilated (identified by Evans blue dye accumulation) and adjacent normal arterial segments were collected 90 min and 2, 5 and 14 days after the procedure. The immediate vascular response was endothelial cell denudation and platelet accumulation. Two weeks after angioplasty, healing of the luminal surface by 'endothelial-like' cells, mild smooth muscle cell proliferation and an angiogenic response with capillary growth into the media were observed. DNA synthesis was increased in balloon-dilated segments at day 5 compared with adjacent nonballoon-dilated artery. This increase in DNA synthesis persisted in the 2 week postangioplasty segments. Additionally, angioplasty produced both quantitative and qualitative changes in arterial lipid synthesis. The most dramatic change was an increase in sterol esterification that was apparent as early as 90 min after angioplasty; the change persisted through day 5 but diminished toward baseline by day 14. Angioplasty-induced alterations of arterial metabolism parallel aspects of the atherogenic process and may be involved in the pathogenesis of postangioplasty reocclusion, particularly in the presence of additional risk factors, such as hyperlipemia.

Original languageEnglish (US)
Pages (from-to)1394-1400
Number of pages7
JournalJournal of the American College of Cardiology
Volume15
Issue number6
StatePublished - 1990
Externally publishedYes

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Balloon Angioplasty
Renal Artery
Angioplasty
Lipid Metabolism
Canidae
DNA
Endothelial Cells
Evans Blue
Esterification
Sterols
Oleic Acid
Hyperlipidemias
Thymidine
Smooth Muscle Myocytes
Blood Vessels
Coloring Agents
Blood Platelets
Arteries
Cell Proliferation
Dogs

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Proliferative and lipid metabolism response to balloon angioplasty in canine renal arteries. / Orlandi, C.; Singh, J. P.; Bell, F. P.; Schaub, R. G.

In: Journal of the American College of Cardiology, Vol. 15, No. 6, 1990, p. 1394-1400.

Research output: Contribution to journalArticle

Orlandi, C. ; Singh, J. P. ; Bell, F. P. ; Schaub, R. G. / Proliferative and lipid metabolism response to balloon angioplasty in canine renal arteries. In: Journal of the American College of Cardiology. 1990 ; Vol. 15, No. 6. pp. 1394-1400.
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