Reversal of Glagov's Hypothesis with Statin Therapy
Author Information
Author(s): Kodali Sobhan, Doyle Mark, Grant Saundra B, Neff David R, Williams Ronald B, Yamrozik June A, Rayarao Geetha, Angheloiu George, Rathi Vikas K, Biederman Robert W
Primary Institution: Allegheny General Hospital, Pittsburgh, PA, USA
Hypothesis
Glagov's hypothesis will work in reverse upon institution of statin therapy.
Conclusion
Statin therapy leads to a decrease in the outer wall, vessel wall, and lipid area in carotid plaques with less than 40% stenosis, but not in those with more than 40%.
Supporting Evidence
- Slices with < 40% stenosis showed a significant decrease in outer wall area.
- Vessel wall area decreased significantly in slices with < 40% stenosis.
- Lipid area decreased in slices with < 40% stenosis after statin therapy.
- Luminal area decreased in slices with < 40% stenosis after statin therapy.
- No significant changes were observed in slices with > 40% stenosis.
Takeaway
This study found that statins can help reduce certain areas of plaque in arteries that are not too blocked, but they don't seem to help when the blockage is more severe.
Methodology
CMR was used to image carotid arteries of patients before and after 12 months of statin therapy.
Limitations
The study only included asymptomatic, 'statin naïve' patients and focused on specific stenosis levels.
Participant Demographics
18 asymptomatic, 'statin naïve' patients with maximum carotid stenosis >50%.
Statistical Information
P-Value
P< .001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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