CLINICAL RESEARCH
Simvastatin Attenuates Plaque Inflammation
Evaluation by Fluorodeoxyglucose Positron Emission Tomography
Nobuhiro Tahara, MD, PhD*,
Hisashi Kai, MD, PhD*,*,
Masatoshi Ishibashi, MD, PhD ,
Hiroyuki Nakaura, MD, PhD*,
Hayato Kaida, MD ,
Kenkichi Baba, MD ,
Naofumi Hayabuchi, MD, PhD and
Tsutomu Imaizumi, MD, PhD*
* Department of Medicine/Cardiovascular Research Institute, Division of Cardio-Vascular Medicine
Department of Radiology, Kurume University School of Medicine, Kurume, Japan
Manuscript received January 10, 2006;
revised manuscript received March 3, 2006,
accepted March 6, 2006.
* Reprint requests and correspondence: Dr. Hisashi Kai, Department of Medicine/Cardiovascular Research Institute, Division of Cardio-Vascular Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan. (Email: naikai{at}med.kurume-u.ac.jp).
OBJECTIVES: We investigated whether simvastatin attenuates plaque inflammation by using 18F-fluorodeoxyglucose positron emission tomography (18FDG-PET) co-registered with computerized tomography.
BACKGROUND: Inflammation plays a key role in progression and destabilization of atherosclerotic plaque. 18F-fluorodeoxyglucose PET is a promising tool for visualizing inflammation of atherosclerotic plaque. Antiinflammatory action is one of the pleiotropic effects of statins.
METHODS: Forty-three consecutive subjects, who underwent 18FDG-PET for cancer screening and had 18FDG uptakes in the thoracic aorta and/or the carotid arteries, were randomized to either statin group receiving simvastatin (n = 21) or diet group receiving dietary management only (n = 22). The maximum standardized uptake values (SUVs) were measured in individual plaques, and were averaged for analysis of the subjectwise results. The responses were assessed after 3-month treatments.
RESULTS: Positron emission tomography revealed 117 and 123 18FDG-positive plaques in the statin and diet groups, respectively. Simvastatin, but not diet alone, attenuated plaque 18FDG uptakes and decreased the SUVs (p < 0.01). Simvastatin reduced low-density lipoprotein cholesterol (LDL-C) by 30% (p < 0.01) and increased high-density lipoprotein cholesterol (HDL-C) by 15% (p < 0.01), whereas LDL-C and HDL-C levels were not changed in the diet group. In the statin group, the decrease in the SUV was well correlated with the HDL-C elevation (p < 0.01) but not with the LDL-C reduction.
CONCLUSIONS: 18F-fluorodeoxyglucose PET visualized plaque inflammation and simvastatin attenuated it. The LDL-Cindependent effects of simvastatin may participate in the beneficial effect. 18F-fluorodeoxyglucose PET has a potential for visually monitoring plaque inflammation and the therapeutic effectiveness of statins.
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Abbreviations and Acronyms
| | 18FDG = 18F-fluorodeoxyglucose | | CT = computed tomography | | HDL-C = high-density lipoprotein cholesterol | | hsCRP = high-sensitivity C-reactive protein | | LDL-C = low-density lipoprotein cholesterol | | MRI = magnetic resonance imaging | | PET = positron emission tomography |
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J. Nucl. Med.,
April 1, 2009;
50(4):
563 - 568.
[Abstract]
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N. Tahara, T. Imaizumi, R. Virmani, and J. Narula
Clinical Feasibility of Molecular Imaging of Plaque Inflammation in Atherosclerosis
J. Nucl. Med.,
March 1, 2009;
50(3):
331 - 334.
[Abstract]
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J. H.F. Rudd, K. S. Myers, S. Bansilal, J. Machac, M. Woodward, V. Fuster, M. E. Farkouh, and Z. A. Fayad
Relationships Among Regional Arterial Inflammation, Calcification, Risk Factors, and Biomarkers: A Prospective Fluorodeoxyglucose Positron-Emission Tomography/Computed Tomography Imaging Study
Circ Cardiovasc Imaging,
March 1, 2009;
2(2):
107 - 115.
[Abstract]
[Full Text]
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E. A. Osborn and F. A. Jaffer
The year in molecular imaging.
J. Am. Coll. Cardiol. Img.,
January 1, 2009;
2(1):
97 - 113.
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D. Izquierdo-Garcia, J. R. Davies, M. J. Graves, J. H.F. Rudd, J. H. Gillard, P. L. Weissberg, T. D. Fryer, and E. A. Warburton
Comparison of Methods for Magnetic Resonance-Guided [18-F]Fluorodeoxyglucose Positron Emission Tomography in Human Carotid Arteries: Reproducibility, Partial Volume Correction, and Correlation Between Methods
Stroke,
January 1, 2009;
40(1):
86 - 93.
[Abstract]
[Full Text]
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S. Fujimoto, D. Hartung, S. Ohshima, D. S. Edwards, J. Zhou, P. Yalamanchili, M. Azure, A. Fujimoto, S. Isobe, Y. Matsumoto, et al.
Molecular Imaging of Matrix Metalloproteinase in Atherosclerotic Lesions: Resolution With Dietary Modification and Statin Therapy
J. Am. Coll. Cardiol.,
December 2, 2008;
52(23):
1847 - 1857.
[Abstract]
[Full Text]
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H Kuehl, H Eggebrecht, T Boes, G Antoch, S Rosenbaum, S Ladd, A Bockisch, J Barkhausen, and R Erbel
Detection of inflammation in patients with acute aortic syndrome: comparison of FDG-PET/CT imaging and serological markers of inflammation
Heart,
November 1, 2008;
94(11):
1472 - 1477.
[Abstract]
[Full Text]
[PDF]
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Y. Zhao, Y. Kuge, S. Zhao, H. W. Strauss, F. G. Blankenberg, and N. Tamaki
Prolonged High-Fat Feeding Enhances Aortic 18F-FDG and 99mTc-Annexin A5 Uptake in Apolipoprotein E-Deficient and Wild-Type C57BL/6J Mice
J. Nucl. Med.,
October 1, 2008;
49(10):
1707 - 1714.
[Abstract]
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[PDF]
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S. J. Lee, Y. K. On, E. J. Lee, J. Y. Choi, B.-T. Kim, and K.-H. Lee
Reversal of Vascular 18F-FDG Uptake with Plasma High-Density Lipoprotein Elevation by Atherogenic Risk Reduction
J. Nucl. Med.,
August 1, 2008;
49(8):
1277 - 1282.
[Abstract]
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J. H.F. Rudd, K. S. Myers, S. Bansilal, J. Machac, C. A. Pinto, C. Tong, A. Rafique, R. Hargeaves, M. Farkouh, V. Fuster, et al.
Atherosclerosis Inflammation Imaging with 18F-FDG PET: Carotid, Iliac, and Femoral Uptake Reproducibility, Quantification Methods, and Recommendations
J. Nucl. Med.,
June 1, 2008;
49(6):
871 - 878.
[Abstract]
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K. Aziz, K. Berger, K. Claycombe, R. Huang, R. Patel, and G. S. Abela
Noninvasive Detection and Localization of Vulnerable Plaque and Arterial Thrombosis With Computed Tomography Angiography/Positron Emission Tomography
Circulation,
April 22, 2008;
117(16):
2061 - 2070.
[Abstract]
[Full Text]
[PDF]
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J. Sanz, P. R. Moreno, and V. Fuster
The Year in Atherothrombosis
J. Am. Coll. Cardiol.,
March 4, 2008;
51(9):
944 - 955.
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M. P. S. Dunphy, H. Schoder, and H. W. Strauss
Radionuclide Techniques for Identifying Vulnerable Plaque
J. Nucl. Med.,
November 1, 2007;
48(11):
1753 - 1755.
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D. Hartung, A. Petrov, N. Haider, S. Fujimoto, F. Blankenberg, A. Fujimoto, R. Virmani, F. D. Kolodgie, H. W. Strauss, and J. Narula
Radiolabeled Monocyte Chemotactic Protein 1 for the Detection of Inflammation in Experimental Atherosclerosis
J. Nucl. Med.,
November 1, 2007;
48(11):
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[Abstract]
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[PDF]
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R. J. Gibbons, P. A. Araoz, and E. E. Williamson
The Year in Cardiac Imaging
J. Am. Coll. Cardiol.,
September 4, 2007;
50(10):
988 - 1003.
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N. Tahara, H. Kai, H. Nakaura, M. Mizoguchi, M. Ishibashi, H. Kaida, K. Baba, N. Hayabuchi, and T. Imaizumi
The prevalence of inflammation in carotid atherosclerosis: analysis with fluorodeoxyglucose positron emission tomography
Eur. Heart J.,
September 2, 2007;
28(18):
2243 - 2248.
[Abstract]
[Full Text]
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J. H.F. Rudd, K. S. Myers, S. Bansilal, J. Machac, A. Rafique, M. Farkouh, V. Fuster, and Z. A. Fayad
18Fluorodeoxyglucose Positron Emission Tomography Imaging of Atherosclerotic Plaque Inflammation Is Highly Reproducible: Implications for Atherosclerosis Therapy Trials
J. Am. Coll. Cardiol.,
August 28, 2007;
50(9):
892 - 896.
[Abstract]
[Full Text]
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F. A. Jaffer, P. Libby, and R. Weissleder
Molecular Imaging of Cardiovascular Disease
Circulation,
August 28, 2007;
116(9):
1052 - 1061.
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M. Koga, H. Kai, H. Yasukawa, T. Yamamoto, Y. Kawai, S. Kato, K. Kusaba, M. Kai, K. Egashira, Y. Kataoka, et al.
Inhibition of Progression and Stabilization of Plaques by Postnatal Interferon-{gamma} Function Blocking in ApoE-Knockout Mice
Circ. Res.,
August 17, 2007;
101(4):
348 - 356.
[Abstract]
[Full Text]
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J. H.F. Rudd, J. Machac, and Z. A. Fayad
Simvastatin and Plaque Inflammation
J. Am. Coll. Cardiol.,
May 15, 2007;
49(19):
1991 - 1991.
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H. Kai, N. Tahara, M. Ishibashi, and T. Imaizumi
Reply
J. Am. Coll. Cardiol.,
May 15, 2007;
49(19):
1991 - 1992.
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N. Tahara, H. Kai, S.-i. Yamagishi, M. Mizoguchi, H. Nakaura, M. Ishibashi, H. Kaida, K. Baba, N. Hayabuchi, and T. Imaizumi
Vascular Inflammation Evaluated by [18F]-Fluorodeoxyglucose Positron Emission Tomography Is Associated With the Metabolic Syndrome
J. Am. Coll. Cardiol.,
April 10, 2007;
49(14):
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[Abstract]
[Full Text]
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