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Meeting ReportCardiovascular

Omega-3 fatty Acid decreases both systemic inflammation of Reticulo-endothelial System and inflammation at vascular plaque

Kisoo Pahk, Hee Young Cho, Hye Ryeong Kwon, Sunju Choi, Hyun Woo Kwon, Jae Seon Eo, Hong Seog Seo, Won-Ki Kim and Sungeun Kim
Journal of Nuclear Medicine May 2019, 60 (supplement 1) 1429;
Kisoo Pahk
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
2Institute of Inflammation Control Korea University College of Medicine Seoul Korea, Republic of
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Hee Young Cho
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
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Hye Ryeong Kwon
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
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Sunju Choi
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
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Hyun Woo Kwon
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
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Jae Seon Eo
3Korea University Guro Hospital Seoul Korea, Republic of
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Hong Seog Seo
4Cardiovascular Center Korea University Guro Hospital Seoul Korea, Republic of
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Won-Ki Kim
2Institute of Inflammation Control Korea University College of Medicine Seoul Korea, Republic of
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Sungeun Kim
1Department of Nuclear Medicine Korea University Anam Hospital Seoul Korea, Republic of
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Abstract

1429

Objectives: Hypertriglyceridemia (highTG) is associated with small dense LDL particle formation and low level of HDL. Omega-3 fatty acids reduces hyperglycemia and is beneficial for prevention of post-myocardial infarct cardiovascular events. It also reported that it decreases inflammation at carotid plaque in patients with carotid stenosis. But, we do not know that reduction of inflammation by omega-3 fatty acid is limited to local vascular plaque or extended to whole body tissues including reticuloendothelial system in patients with highTG. We would like to know whether reduction of inflammation by omega-3 fatty acid administration is limited to vascular tissue or extended to whole body tissues including reticuloendothelial system in patients with highTG.

Methods: Using whole body combined fluorodeoxyglucose positron emission tomography/computed tomography imaging, we observed total 46 subjects consisted of highTG patients (n=21, 57±12 years) and controls (n=25, 57±8 years). To compare the local vascular plaque inflammation and systemic inflammatory RES activation, maximal standard uptake value (max SUV) of the highest regions of interest was calculated in the vascular tissues such as right carotid artery, ascending and descending aorta, and RES system such as liver, spleen, bone marrow, lung and visceral fat. We also measure repeated max SUV at same sites after omega-3 fatty acid 1.5g for 6months.

Results: The SUV of highTG patients in the carotid artery and ascending and descending aorta were significantly higher than controls. The SUV of highTG patients in the liver, spleen, bone marrow, lung and visceral fat were significantly higher than controls, whereas subcutaneous fat SUV were not significantly different among groups. The SUV of vascular tissue and RES system and that of visceral adipose tissue were significantly correlated (rho=0.62 p<0.001) but neither vascular tissue nor RES SUV was associated with subcutaneous fat SUV. Omega-3 fatty acid administration for 6 months reduced both % decrease of max SUV of vascular plaque [% decrease of max SUV=baseline max SUV-post Tx max SUV/ baseline max SUV X 100] (carotid: 24.9%, p<0.005; ascending aorta 18.67 %, p<0.001; descending aorta 20.13 %, p<0.001, respectively), and RES system (liver 34.8%, p<0.001; spleen 29.88%, p<0.001; bone marrow 10.14 %,p<0.001; lung 3.48 %, p<0.001: and visceral adipose tissue 5.38%, p<0.001, respectively).

Conclusions: These findings suggest that the administration of omega-3 fatty acid reduces inflammation not limited to local vascular tissue but generalized inflammatory organs in patients with hyper TGS.

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Journal of Nuclear Medicine
Vol. 60, Issue supplement 1
May 1, 2019
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Omega-3 fatty Acid decreases both systemic inflammation of Reticulo-endothelial System and inflammation at vascular plaque
Kisoo Pahk, Hee Young Cho, Hye Ryeong Kwon, Sunju Choi, Hyun Woo Kwon, Jae Seon Eo, Hong Seog Seo, Won-Ki Kim, Sungeun Kim
Journal of Nuclear Medicine May 2019, 60 (supplement 1) 1429;

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Omega-3 fatty Acid decreases both systemic inflammation of Reticulo-endothelial System and inflammation at vascular plaque
Kisoo Pahk, Hee Young Cho, Hye Ryeong Kwon, Sunju Choi, Hyun Woo Kwon, Jae Seon Eo, Hong Seog Seo, Won-Ki Kim, Sungeun Kim
Journal of Nuclear Medicine May 2019, 60 (supplement 1) 1429;
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