Vascular inflammation in metabolically abnormal but normal-weight and metabolically healthy obese individuals analyzed with 18F-fluorodeoxyglucose positron emission tomography

Hye Jin Yoo, Sungeun Kim, Soon Young Hwang, Ho Cheol Hong, Hae Yoon Choi, Ji A. Seo, Sin Gon Kim, Nan Hee Kim, Dong Seop Choi, Sei Hyun Baik, Kyung Mook Choi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Recent studies have suggested that body size phenotype may contribute to atherosclerosis and cardiovascular disease. 18F-fluorodeoxyglucose (FDG) positron emission tomography is a useful imaging technique for detecting vascular inflammation that may reflect plaque vulnerability. Therefore, we analyzed which body size phenotypes cause the increased vascular inflammation using FDG positron emission tomography. We compared 18F-FDG uptake, measured using the blood-normalized standardized uptake value, known as the target-to-background ratio (TBR), along with various cardiometabolic risk parameters in 250 participants without a history of cardiovascular disease. Body size phenotypes were classified according to body mass index and the presence/absence of metabolic syndrome. Cardiometabolic risk factors were significantly different among the body size phenotype groups. In particular, the maximum TBR (maxTBR) values in the metabolically abnormal but normal-weight, metabolically healthy obese (MHO), and metabolically abnormal obese groups were significantly greater than those of the metabolically healthy normal-weight (MHNW) group. Components of metabolic syndrome, insulin resistance, high-sensitivity C-reactive protein, and Framingham Risk Score were associated with maxTBR value. Interestingly, although the Framingham Risk Score of the MHO group was almost similar to that of the MHNW group, maxTBR value of MHO subjects was significantly higher than that of MHNW subjects (1.38 [1.20, 1.50] vs 1.22 [1.12, 1.37], p = 0.006). In conclusion, the present study suggests that unique subsets of body size phenotype, such as MHO or metabolically abnormal but normal weight, may have distinct effects on vascular inflammation.

Original languageEnglish
Pages (from-to)523-528
Number of pages6
JournalAmerican Journal of Cardiology
Issue number4
Publication statusPublished - 2015 Feb 15
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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