The effect of probucol on femoral atherosclerosis: The Probucol Quantitative Regression Swedish Trial (PQRST)
Abstract
The Probucol Quantitative Regression Swedish Trial tested whether treatment of hypercholesterolemic persons with probucol for 3 years affected femoral atherosclerosis. The primary end point was the change in atheroma volume estimated as change in lumen volume of the femoral artery assessed by quantitative arteriography. Three hundred three patients with visible atherosclerosis were randomized to probucol 0.5 g, twice daily, or to placebo. All patients were given diet and cholestyramine, 8 to 16 g/day. Twenty-nine patients were excluded because of inadequate primary end point measurements. The mean age of the remaining 274 subjects (158 were men) was 55 years. Seventeen percent had intermittent claudication and 24% had angina pectoris. After 3 years, the probucol-treated patients had 17% lower serum cholesterol, 12% lower low-density lipoprotein cholesterol, 24% lower total high-density lipoprotein cholesterol, and 34% lower high-density lipoprotein2 cholesterol levels than control subjects. All lipoprotein differences between the treatment groups remained highly significant during the trial. There was no statistically significant change in lumen volume between the probucol and the control group. Furthermore, there was no difference between the treatment groups with regard to change in arterial edge roughness or amount of aorto-femoral atherosclerosis; neither were there any differences between the treatment groups with regard to change in ST-segment depressions on exercise tests or ankle/arm blood pressure (secondary end points). In the control group, lumen volume increased (p < 0.001) and roughness of the femoral artery decreased (p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
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Clinically, the suppressive effects of probucol on post-PTCA restenosis, carotid artery IMT progression, and cardiovascular events have been reported from RCTs, albeit small-scale ones.
“Clinically, the suppressive effects on post-percutaneous transluminal coronary angioplasty (PTCA) restenosis676, 677), carotid artery IMT progression, and cardiovascular events678) have been reported from RCTs, albeit small-scales ones.”
From Japan Atherosclerosis Society (JAS) guidelines for prevention of atherosclerotic cardiovascular diseases 2017 (2018) · cites this paper as [678]
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- Authors
- Walldius, G., Erikson, U., Olsson, A. G., Bergstrand, L., Hådell, K., Johansson, J., Kaijser, L., Lassvik, C., Mölgaard, J., Nilsson, S., Schäfer-Elinder, L., Stenport, G., & Holme, I.
- Affiliations
- Linköping University (SE)
- Corresponding author
- Walldius, Göran
- ORCID
- Olsson, Anders G.
- Venue
- The American Journal of Cardiology
- Publisher
- Elsevier BV
- Published
- 1994-11
- Volume
- 74
- Issue
- 9
- Pages
- 875-883
- ISSN
- 0002-9149 (ISSN-L)
- OpenAlex
- W2131900346
- Cited by
- 248
- References
- 35
- Citations by year
- 2026: 4 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 5 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 2
- FWCI
- 24.90
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The American Journal of Cardiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
- Health Sciences › Medicine › Surgery › Peripheral Artery Disease Management
- Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
- Keywords
- probucol, femoral atherosclerosis, hypercholesterolemia, atheroma volume, serum cholesterol, lipoproteins, cholestyramine, intermittent claudication, angina pectoris, exercise electrocardiography
- MeSH terms
- Arteriosclerosis, Cholestyramine Resin, Double-Blind Method, Female, Femoral Artery, Humans, Hypercholesterolemia, Image Processing, Computer-Assisted, Cholesterol, HDL, Cholesterol, LDL, Male, Middle Aged, Probucol, Radiography
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