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Da Nam B, Kwon SH, Park BW, Kwon SS. Characteristics of the epicardial adipose tissue measured by low-dose chest computed tomography according to the metabolic health/obesity status. Obes Res Clin Pract 2024:S1871-403X(24)00089-9. [PMID: 39179461 DOI: 10.1016/j.orcp.2024.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 07/15/2024] [Accepted: 08/07/2024] [Indexed: 08/26/2024]
Abstract
BACKGROUND Epicardial adipose tissue (EAT) is associated with the development of cardiovascular disease and long-term survival. This study aimed to assess the characteristics of EAT according to the metabolic health and obesity status using low-dose chest computed tomography (CT). METHODS A total of 1074 asymptomatic adults who underwent a medical health check-up were enrolled. Subjects were categorized into the following four groups according to the metabolic health and obesity status: metabolically healthy non-obese (MHNO); metabolically unhealthy non-obese (MUNO); metabolically healthy obese (MHO); and metabolically unhealthy obese (MUO). EAT on low-dose chest CT was measured by using automatic, quantitative measurement software. RESULTS MUO showed the highest EAT volume and lowest EAT radiodensity in comparison with MHNO (p < 0.001). The MUNO (n = 70), MHO (n = 259), and MUO (n = 231) groups had increased EAT volume (β [95 % CI], 37.65 [23.11,52.18], 56.79 [47.56,66.02], 84.85 [74.59,95.11] respectively, all p < 0.001), decreased EAT radiodensity (β [95 % CI], - 3.22 [- 4.59,- 1.85], - 4.48 [- 5.30,- 3.66], - 6.03 [- 6.90,- 5.16] respectively, all p < 0.001) in comparison with the MHNO (n = 514) group by using multivariable linear regression models. CONCLUSIONS Both metabolic abnormalities and obesity were closely associated with EAT characteristics. Characteristics of EAT are similar in MHO and MUNO. This finding suggests that MHO is not a favorable condition in terms of cardiac health, as assessed by the characteristics of EAT. The combination of obesity and metabolically unhealthy status has a synergistic adverse effect on EAT. Measurement of EAT could be a useful imaging biomarker for evaluation of an individual's metabolic health/obesity status.
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Affiliation(s)
- Bo Da Nam
- Department of Radiology, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Soon Hyo Kwon
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Byung-Won Park
- Division of Cardiology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Seong Soon Kwon
- Division of Cardiology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea.
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Ma ZY, Duan H, Han D, He B, Xie XJ, Lu L, Jiang J, Li RH. Epicardial fat in patients with metabolic syndrome: A systematic review and meta-analysis. Eur J Radiol 2023; 167:111056. [PMID: 37666076 DOI: 10.1016/j.ejrad.2023.111056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 09/06/2023]
Abstract
PURPOSE Abnormally increased epicardial fat appears to be associated with an additional risk of major adverse cardiovascular events (MACEs) in the context of metabolic syndrome (MetS). However, evidence on the relationship between epicardial fat volumes (EFVs), epicardial fat thickness (EFT) and MetS remains inconsistent. METHODS Specific searches of electronic databases from 1 January 2000 to 31 October 2022 were independently performed by two researchers. In this study, two quantification measures of epicardial fat were included: comparison of total computed tomography-based EFVs and EFT between two groups (individuals with and without MetS), estimating standardized mean difference (SMD) with corresponding 95 % confidence intervals (CIs) through a random-effects model analysis. The heterogeneity in the included studies was explored by meta-regression and subgroup analyses. RESULTS The EFVs were significantly increased in MetS subjects compared with non-MetS subjects (SMD: 1.07, 95 % CI: 0.69-1.45, p < 0.001), and the EFT was also significantly larger in MetS patients than in the Non-MetS (SMD: 1.12, 95 % CI: 0.84-1.41, p < 0.001). We compared the Caucasian and American subgroups with the Asian and African subgroups, and the EFT was greater in the former subgroups (SMD: 1.32, 95 % CI: 0.44-2.20, p < 0.001). When comparing the EFT among the age subgroups, there was a significant SMD between adolescents and adults or elderly individuals (SMD: 1.21, 95 % CI: 0.84-1.52, p < 0.001). CONCLUSIONS MetS patients tend to present greater EFT near the right ventricular free wall and greater total EFVs. Increased epicardial fat, an imaging biomarker, independently affects the onset of MetS.
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Affiliation(s)
- Zhong-Yan Ma
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Hui Duan
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China.
| | - Dan Han
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Bo He
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Xiao-Jie Xie
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Lin Lu
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Jie Jiang
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
| | - Rui-Hong Li
- Department of Radiology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang road, Kunming 650032, China
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Measurement of epicardial adipose tissue using non-contrast routine chest-CT: a consideration of threshold adjustment for fatty attenuation. BMC Med Imaging 2022; 22:114. [PMID: 35752770 PMCID: PMC9233319 DOI: 10.1186/s12880-022-00840-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/03/2022] [Indexed: 11/15/2022] Open
Abstract
Background Epicardial adipose tissue (EAT) is known as an important imaging indicator for cardiovascular risk stratification. The present study aimed to determine whether the EAT volume (EV) and mean EAT attenuation (mEA) measured by non-contrast routine chest CT (RCCT) could be more consistent with those measured by coronary CT angiography (CCTA) by adjusting the threshold of fatty attenuation. Methods In total, 83 subjects who simultaneously underwent CCTA and RCCT were enrolled. EV and mEA were quantified by CCTA using a threshold of (N30) (− 190 HU, − 30 HU) as a reference and measured by RCCT using thresholds of N30, N40 (− 190 HU, − 40 HU), and N45 (− 190 HU, − 45 HU). The correlation and agreement of EAT metrics between the two imaging modalities and differences between patients with coronary plaques (plaque ( +)) and without plaques (plaque ( −)) were analyzed. Results EV obtained from RCCT showed very strong correlation with the reference (r = 0.974, 0.976, 0.972 (N30, N40, N45), P < 0.001), whereas mEA showed a moderate correlation (r = 0.516, 0.500, 0.477 (N30, N40, N45), P < 0.001). Threshold adjustment was able to reduce the bias of EV, while increase the bias of mEA. Data obtained by CCTA and RCCT both demonstrated a significantly larger EV in the plaque ( +) group than in the plaque ( −) group (P < 0.05). A significant difference in mEA was shown only by RCCT using a threshold of N30 (plaque ( +) vs ( −): − 80.0 ± 4.4 HU vs − 78.0 ± 4.0 HU, P = 0.030). The mEA measured on RCCT using threshold of N40 and N45 showed no significant statistical difference between the two groups (P = 0.092 and 0.075), which was consistent with the result obtained on CCTA (P = 0.204). Conclusion Applying more negative threshold, the consistency of EV measurements between the two techniques improves and a consistent result can be obtained when comparing EF measurements between groups, although the bias of mEA increases. Threshold adjustment is necessary when measuring EF with non-contrast RCCT.
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Vučić D, Bijelić N, Rođak E, Rajc J, Dumenčić B, Belovari T, Mihić D, Selthofer-Relatić K. Right Heart Morphology and Its Association With Excessive and Deficient Cardiac Visceral Adipose Tissue. CLINICAL MEDICINE INSIGHTS-CARDIOLOGY 2021; 15:11795468211041330. [PMID: 34602829 PMCID: PMC8485260 DOI: 10.1177/11795468211041330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 07/11/2021] [Indexed: 11/21/2022]
Abstract
Visceral adipose tissue is an independent risk factor for the development of atherosclerotic coronary disease, arterial hypertension, diabetes and metabolic syndrome. Right heart morphology often involves the presence of adipose tissue, which can be quantified by non-invasive imaging methods. The last decade brought a wealth of new insights into the function and morphology of adipose tissue, with great emphasis on its role in the pathogenesis of heart disease. Cardiac adipose tissue is involved in thermogenesis, mechanical protection of the heart and energy storage. However, it can also be an endocrine organ that synthesises numerous pro-inflammatory and anti-inflammatory cytokines, the effect of which is accomplished by paracrine and vasocrine mechanisms. Visceral adipose tissue has several compartments that differ in their embryological origin and vascularisation. Deficiency of cardiac adipose tissue, often due to chronic pathological conditions such as oncological diseases or chronic infectious diseases, predicts increased mortality and morbidity. To date, knowledge about the influence of visceral adipose tissue on cardiac morphology is limited, especially the effect on the morphology of the right heart in a state of excess or deficient visceral adipose tissue.
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Affiliation(s)
- Domagoj Vučić
- Department for Internal Medicine, Division of Cardiology, General Hospital Doctor Josip Benčević, Slavonski Brod, Croatia
| | - Nikola Bijelić
- Department for Histology and Embriology, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Edi Rođak
- Department for Histology and Embriology, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Jasmina Rajc
- Department for Pathology and Forensic Medicine, University Hospital Center Osijek, Osijek, Croatia.,Department for Pathology, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Boris Dumenčić
- Department for Pathology and Forensic Medicine, University Hospital Center Osijek, Osijek, Croatia.,Department for Pathology, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Tatjana Belovari
- Department for Histology and Embriology, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Damir Mihić
- Department of Intensive Care Medicine, University Center Hospital Osijek, Osijek, Croatia.,Department for Internal Medicine, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Kristina Selthofer-Relatić
- Department for Internal Medicine, Faculty of Medicine, University Josip Juraj Strossmayer in Osijek, Osijek, Croatia.,Department for Heart and Vascular Diseases, University Center Hospital Osijek, Osijek, Croatia
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Sadouni M, Boldeanu I, Durand M, Juneau D, Blais S, Tremblay C, Chartrand-Lefebvre C. Quantification of epicardial fat using non contrast cardiac CT in an HIV population: Reproducibility and association with other body fat indices. Eur J Radiol Open 2021; 8:100317. [PMID: 33490311 PMCID: PMC7804835 DOI: 10.1016/j.ejro.2020.100317] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/14/2020] [Accepted: 12/21/2020] [Indexed: 12/20/2022] Open
Abstract
Assessment of epicardial fat volume is highly reproducible. Epicardial fat volume and epicardial fat area have a good correlation to BMI. Epicardial fat volume correlates best with DEXA-derived total body fat and trunk fat. Epicardial fat volume should be considered over other CT assessment methods when quantifying epicardial fat in HIV patients.
Purpose To assess the reproducibility of different epicardial fat measurement and their association with other adiposity measurements in HIV-infected and non-HIV-infected patients. Methods and materials In this cross-sectional study, 167 HIV-infected and 58 non-HIV-infected consecutive participants (200 males; mean age 56 years) with low/intermediate cardiovascular risk were recruited between 2012 and 2017 from a large prospective cohort and underwent non-contrast cardiac CT. Two independent observers measured epicardial fat volume, area and thickness in all participants. For intra-observer agreement, one observer did a second assessment in a subset of 40 patients. Agreement was assessed with the intraclass correlation coefficient (ICC). Pearson's correlation was estimated to assess the association between epicardial fat, body-mass index (BMI) and dual-energy x-ray absorptiometry (DEXA) derived percentage of body fat. Results Inter-observer agreement was excellent for epicardial fat volume (ICC 0.75) and area (ICC 0.95) and good for epicardial fat thickness (ICC near the left anterior descending artery (LAD) 0.64, ICC near right coronary artery (RCA) 0.64). Intra-observer agreement was excellent for epicardial fat volume (ICC 0.97), area (ICC 0.99), thickness at LAD (ICC 0.71) and good for epicardial fat thickness at RCA (ICC 0.68). Epicardial fat volume had a better correlation to total body fat (r = 0.28, p < 0.001) and trunk fat (r = 0.37, p < 0.001), in comparison to other epicardial fat indices. Conclusion Assessment of epicardial fat volume is highly reproducible in both HIV-infected and non-HIV-infected patients and shows a superior correlation with DEXA-based body and trunk fat measurements. Epicardial fat volume should be considered over other CT assessment methods when quantifying epicardial fat in HIV patients.
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Affiliation(s)
- Manel Sadouni
- Department of Radiology and Nuclear Medicine, University of Montreal Hospital (CHUM), Montreal, Québec, Canada.,Research Center of the CHUM, Montreal, Québec, Canada
| | - Irina Boldeanu
- Department of Radiology and Nuclear Medicine, University of Montreal Hospital (CHUM), Montreal, Québec, Canada.,Research Center of the CHUM, Montreal, Québec, Canada
| | - Madeleine Durand
- Research Center of the CHUM, Montreal, Québec, Canada.,Internal Medicine Unit, CHUM, Montréal, Québec, Canada
| | - Daniel Juneau
- Department of Radiology and Nuclear Medicine, University of Montreal Hospital (CHUM), Montreal, Québec, Canada.,Research Center of the CHUM, Montreal, Québec, Canada
| | - Simon Blais
- Department of Radiology and Nuclear Medicine, University of Montreal Hospital (CHUM), Montreal, Québec, Canada
| | - Cécile Tremblay
- Research Center of the CHUM, Montreal, Québec, Canada.,Microbiology Unit, CHUM, Montréal, Québec, Canada
| | - Carl Chartrand-Lefebvre
- Department of Radiology and Nuclear Medicine, University of Montreal Hospital (CHUM), Montreal, Québec, Canada.,Research Center of the CHUM, Montreal, Québec, Canada
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