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Jalil JE, Gabrielli L, Ocaranza MP, MacNab P, Fernández R, Grassi B, Jofré P, Verdejo H, Acevedo M, Cordova S, Sanhueza L, Greig D. New Mechanisms to Prevent Heart Failure with Preserved Ejection Fraction Using Glucagon-like Peptide-1 Receptor Agonism (GLP-1 RA) in Metabolic Syndrome and in Type 2 Diabetes: A Review. Int J Mol Sci 2024; 25:4407. [PMID: 38673991 DOI: 10.3390/ijms25084407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
This review examines the impact of obesity on the pathophysiology of heart failure with preserved ejection fraction (HFpEF) and focuses on novel mechanisms for HFpEF prevention using a glucagon-like peptide-1 receptor agonism (GLP-1 RA). Obesity can lead to HFpEF through various mechanisms, including low-grade systemic inflammation, adipocyte dysfunction, accumulation of visceral adipose tissue, and increased pericardial/epicardial adipose tissue (contributing to an increase in myocardial fat content and interstitial fibrosis). Glucagon-like peptide 1 (GLP-1) is an incretin hormone that is released from the enteroendocrine L-cells in the gut. GLP-1 reduces blood glucose levels by stimulating insulin synthesis, suppressing islet α-cell function, and promoting the proliferation and differentiation of β-cells. GLP-1 regulates gastric emptying and appetite, and GLP-1 RA is currently indicated for treating type 2 diabetes (T2D), obesity, and metabolic syndrome (MS). Recent evidence indicates that GLP-1 RA may play a significant role in preventing HFpEF in patients with obesity, MS, or obese T2D. This effect may be due to activating cardioprotective mechanisms (the endogenous counter-regulatory renin angiotensin system and the AMPK/mTOR pathway) and by inhibiting deleterious remodeling mechanisms (the PKA/RhoA/ROCK pathway, aldosterone levels, and microinflammation). However, there is still a need for further research to validate the impact of these mechanisms on humans.
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Affiliation(s)
- Jorge E Jalil
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Luigi Gabrielli
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - María Paz Ocaranza
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Paul MacNab
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Rodrigo Fernández
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Bruno Grassi
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Nutrition and Diabetes, Santiago 8330055, Chile
| | - Paulina Jofré
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Nutrition and Diabetes, Santiago 8330055, Chile
| | - Hugo Verdejo
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Monica Acevedo
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Samuel Cordova
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Luis Sanhueza
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
| | - Douglas Greig
- Pontificia Universidad Católica de Chile, School of Medicine, Division of Cardiovascular Diseases, Santiago 8330055, Chile
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Ahmed B, Farb MG, Karki S, D'Alessandro S, Edwards NM, Gokce N. Pericardial Adipose Tissue Thrombospondin-1 Associates With Antiangiogenesis in Ischemic Heart Disease. Am J Cardiol 2024; 210:201-207. [PMID: 37863116 PMCID: PMC10842123 DOI: 10.1016/j.amjcard.2023.09.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/15/2023] [Accepted: 09/24/2023] [Indexed: 10/22/2023]
Abstract
Accumulation of ectopic pericardial adipose tissue has been associated with cardiovascular complications which, in part, may relate to adipose-derived factors that regulate vascular responses and angiogenesis. We sought to characterize adipose tissue microvascular angiogenic capacity in subjects who underwent elective cardiac surgeries including aortic, valvular, and coronary artery bypass grafting. Pericardial adipose tissue was collected intraoperatively and examined for angiogenic capacity. Capillary sprouting was significantly blunted (twofold, p <0.001) in subjects with coronary artery disease (CAD) (age 60 ± 9 years, body mass index [BMI] 32 ± 4 kg/m2, low-density lipoprotein cholesterol [LDL-C] 95 ± 46 mg/100 ml, n = 29) compared with age-, BMI-, and LDL-C matched subjects without angiographic obstructive CAD (age 59 ± 10 y, BMI 35 ± 9 kg/m2, LDL-C 101 ± 40 mg/100 ml, n = 12). For potential mechanistic insight, we performed mRNA expression analyses using quantitative real-time polymerase chain reaction and observed no significant differences in pericardial fat gene expression of proangiogenic mediators vascular endothelial growth factor-A (VEGF-A), fibroblast growth factor-2 (FGF-2), and angiopoietin-1 (angpt1), or anti-angiogenic factors soluble fms-like tyrosine kinase-1 (sFlt-1) and endostatin. In contrast, mRNA expression of anti-angiogenic thrombospondin-1 (TSP-1) was significantly upregulated (twofold, p = 0.008) in CAD compared with non-CAD subjects, which was confirmed by protein western-immunoblot analysis. TSP-1 gene knockdown using short hairpin RNA lentiviral delivery significantly improved angiogenic deficiency in CAD (p <0.05). In conclusion, pericardial fat in subjects with CAD may be associated with an antiangiogenic profile linked to functional defects in vascularization capacity. Local paracrine actions of TSP-1 in adipose depots surrounding the heart may play a role in mechanisms of ischemic heart disease.
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Affiliation(s)
- Bulbul Ahmed
- Evans Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Melissa G Farb
- Evans Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Shakun Karki
- Evans Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Sophia D'Alessandro
- Evans Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Niloo M Edwards
- Division of Cardiac Surgery, Boston Medical Center, Boston, Massachusetts
| | - Noyan Gokce
- Evans Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts.
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Salih A, Ardissino M, Wagen AZ, Bard A, Szabo L, Ryten M, Petersen SE, Altmann A, Raisi‐Estabragh Z. Genome-Wide Association Study of Pericardial Fat Area in 28 161 UK Biobank Participants. J Am Heart Assoc 2023; 12:e030661. [PMID: 37889180 PMCID: PMC10727393 DOI: 10.1161/jaha.123.030661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 09/06/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Pericardial adipose tissue (PAT) is the visceral adipose tissue compartment surrounding the heart. Experimental and observational research has suggested that greater PAT deposition might mediate cardiovascular disease, independent of general or subcutaneous adiposity. We characterize the genetic architecture of adiposity-adjusted PAT and identify causal associations between PAT and adverse cardiac magnetic resonance imaging measures of cardiac structure and function in 28 161 UK Biobank participants. METHODS AND RESULTS The PAT phenotype was extracted from cardiac magnetic resonance images using an automated image analysis tool previously developed and validated in this cohort. A genome-wide association study was performed with PAT area set as the phenotype, adjusting for age, sex, and other measures of obesity. Functional mapping and Bayesian colocalization were used to understand the biologic role of identified variants. Mendelian randomization analysis was used to examine potential causal links between genetically determined PAT and cardiac magnetic resonance-derived measures of left ventricular structure and function. We discovered 12 genome-wide significant variants, with 2 independent sentinel variants (rs6428792, P=4.20×10-9 and rs11992444, P=1.30×10-12) at 2 distinct genomic loci, that were mapped to 3 potentially causal genes: T-box transcription factor 15 (TBX15), tryptophanyl tRNA synthetase 2, mitochondrial (WARS2) and early B-cell factor-2 (EBF2) through functional annotation. Bayesian colocalization additionally suggested a role of RP4-712E4.1. Genetically predicted differences in adiposity-adjusted PAT were causally associated with adverse left ventricular remodeling. CONCLUSIONS This study provides insights into the genetic architecture determining differential PAT deposition, identifies causal links with left structural and functional parameters, and provides novel data about the pathophysiological importance of adiposity distribution.
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Affiliation(s)
- Ahmed Salih
- William Harvey Research Institute, National Institute for Health and Care Research (NIHR) Barts Biomedical Research CentreQueen Mary University of London, Charterhouse SquareLondonUnited Kingdom
| | - Maddalena Ardissino
- National Heart and Lung Institute, Imperial College LondonLondonUnited Kingdom
- Heart and Lung Research Institute, University of CambridgeCambridgeUnited Kingdom
| | - Aaron Z. Wagen
- Genetics and Genomic Medicine, Great Ormond Street Institute of Child HealthUniversity College LondonLondonUnited Kingdom
- Department of Clinical and Movement NeurosciencesQueen Square Institute of NeurologyLondonUnited Kingdom
- Neurodegeneration Biology LaboratoryThe Francis Crick InstituteLondonUnited Kingdom
| | - Andrew Bard
- William Harvey Research Institute, National Institute for Health and Care Research (NIHR) Barts Biomedical Research CentreQueen Mary University of London, Charterhouse SquareLondonUnited Kingdom
| | - Liliana Szabo
- William Harvey Research Institute, National Institute for Health and Care Research (NIHR) Barts Biomedical Research CentreQueen Mary University of London, Charterhouse SquareLondonUnited Kingdom
- Barts Heart Centre, St Bartholomew’s Hospital, Barts Health National Health Service (NHS) Trust, West SmithfieldLondonUnited Kingdom
- Semmelweis University, Heart and Vascular CenterBudapestHungary
| | - Mina Ryten
- Genetics and Genomic Medicine, Great Ormond Street Institute of Child HealthUniversity College LondonLondonUnited Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research CentreUniversity College LondonLondonUnited Kingdom
| | - Steffen E. Petersen
- William Harvey Research Institute, National Institute for Health and Care Research (NIHR) Barts Biomedical Research CentreQueen Mary University of London, Charterhouse SquareLondonUnited Kingdom
- Barts Heart Centre, St Bartholomew’s Hospital, Barts Health National Health Service (NHS) Trust, West SmithfieldLondonUnited Kingdom
- Health Data Research UKLondonUnited Kingdom
- Alan Turing InstituteLondonUnited Kingdom
| | - André Altmann
- Centre for Medical Image Computing, Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonUnited Kingdom
| | - Zahra Raisi‐Estabragh
- William Harvey Research Institute, National Institute for Health and Care Research (NIHR) Barts Biomedical Research CentreQueen Mary University of London, Charterhouse SquareLondonUnited Kingdom
- Barts Heart Centre, St Bartholomew’s Hospital, Barts Health National Health Service (NHS) Trust, West SmithfieldLondonUnited Kingdom
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Shuhaiber J, Moradi Tuchayi S, Bijari FJ, Guehl NJ, Wang Y, Farinelli WA, Arkun K, El Fakhri G, Anderson RR, Garibyan L. Injectable ice slurry for reducing pericardial adipose tissue. Lasers Surg Med 2023; 55:674-679. [PMID: 37464943 DOI: 10.1002/lsm.23709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES Excess pericardial adipose tissue (PAT) is associated with a higher risk of cardiovascular diseases. Currently, available methods for reducing PAT volume include weight loss through diet and exercise, weight loss with medications, and bariatric surgery. However, these methods are all limited by low patient compliance to maintain the results. We have developed an injectable ice slurry that could selectively target and reduce subcutaneous adipose tissue volume. The aim of this study was to investigate the feasibility and safety of using injectable slurry to selectively reduce PAT volume in a preclinical large animal model. METHODS PAT in Yucatan swine was injected with slurry or room temperature control solution. All animals were imaged with baseline chest computed tomography (CT) before slurry injection and at 2 months after injection to quantify PAT volume. Specimens from injected and noninjected PAT were harvested for histology. RESULTS Slurry treatment of PAT was well tolerated in all animals. Slurry-induced selective cryolipolysis in treated PAT. CT imaging showed decrease in PAT volume in treated area at 8 weeks posttreatment compared to baseline, that was significantly different from control solution treated group (median [range]: -29.66 [-35.07 to -27.92]% vs. -1.50 [-11.69 to 8.69]% in control animals respectively, p < 0.05). CONCLUSIONS This study demonstrated that slurry injection into PAT is feasible in a large animal model. Slurry injection was safe and effective in inducing selective cryolipolysis in PAT and reducing PAT volume. Slurry reduction of PAT could potentially serve as a novel treatment for cardiovascular diseases.
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Affiliation(s)
- Jeffrey Shuhaiber
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Sara Moradi Tuchayi
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Felicitas J Bijari
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Nicolas J Guehl
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ying Wang
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - William A Farinelli
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Knarik Arkun
- Department of Pathology and Laboratory Medicine, Tufts Medical Center, Boston, Massachusetts, USA
| | - Georges El Fakhri
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Richard R Anderson
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lilit Garibyan
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Zain S, Shamshad T, Kabir A, Khan AA. Epicardial Adipose Tissue and Development of Atrial Fibrillation (AFIB) and Heart Failure With Preserved Ejection Fraction (HFpEF). Cureus 2023; 15:e46153. [PMID: 37900360 PMCID: PMC10612538 DOI: 10.7759/cureus.46153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2023] [Indexed: 10/31/2023] Open
Abstract
Epicardial adipose tissue (EAT) has been associated with the development of many cardiovascular abnormalities, of which the development of atrial fibrillation (AFIB) in this group of patients is not an uncommon finding. Several mechanisms have been proposed to explain the role of EAT in the development of AFIB. It involves cardiac remodeling owing to the underlying fatty infiltration and the subsequent inflammation and fibrosis. This leads to the formation of ectopic foci that can lead to AFIB. Some studies propose that structural and valvular heart disease and increased hemodynamic stress further augment the development of AFIB in patients with underlying EAT. The degree of development of AFIB is also related to EAT thickness and volume. Therefore, EAT quantification can be used as an imaging technique to predict cardiovascular outcomes in these patients. Obesity also plays an important role in the development of AFIB both as an independent factor and by leading to adipose tissue deposition on the epicardial tissue. Understanding the pathophysiology of EAT is important as it can lead to the development of therapies that can target obesity as a risk factor for preventing AFIB. Some promising therapies have already been investigated for decreasing the risk of AFIB in patients with EAT. Dietary changes and weight loss have been shown to reduce the deposition of fat on epicardial tissue. Antidiabetic drugs and statin therapy have also shown promising results. Bariatric surgery has been shown to decrease EAT volume on echocardiography in obese patients.
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Affiliation(s)
- Sarmad Zain
- Internal Medicine, Nishtar Medical University, Multan, PAK
| | - Talha Shamshad
- Internal Medicine, Nishtar Medical University, Multan, PAK
| | - Ahmad Kabir
- Internal Medicine, Nishtar Medical University, Multan, PAK
- Pulmonology & Critical Care, Ch. Pervaiz Elahi Institute of Cardiology Multan, Multan, PAK
| | - Ahmad Ali Khan
- Cardiology, Ch. Pervaiz Elahi Institute of Cardiology Multan, Multan, PAK
- Internal Medicine, Nishtar Medical University, Multan, PAK
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Richardson LA, Basu A, Chien LC, Alman AC, Snell-Bergeon JK. Longitudinal Associations of Healthy Dietary Pattern Scores with Coronary Artery Calcification and Pericardial Adiposity in United States Adults with and without Type 1 Diabetes. J Nutr 2023; 153:2085-2093. [PMID: 37187353 PMCID: PMC10375506 DOI: 10.1016/j.tjnut.2023.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/04/2023] [Accepted: 05/11/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Pericardial adipose tissue volume (PAT) and coronary artery calcification (CAC) are prognostic indicators for future cardiovascular events; however, no studies have assessed the long-term associations of adherence to dietary patterns (DPs) with PAT and CAC in adults with and without type 1 diabetes (T1D). OBJECTIVES We investigated the longitudinal associations of the Mediterranean Diet (MedDiet) and Dietary Approaches to Stop Hypertension (DASH) diet with PAT and CAC progression in adults with and without T1D. METHODS The Coronary Artery Calcification in Type 1 Diabetes (CACTI) study is a population-based, prospective study of 652 T1D and 764 nondiabetic mellitus (nonDM) (19-56 y) participants that began in 2000-2002 with follow-up visits in 2003-2004 and 2006-2007. At each visit, food frequency questionnaires were collected and used to develop adherence scores for the MedDiet and DASH diets. PAT and CAC were measured at each visit using electron beam computed tomography. CAC progression was defined as a ≥2.5 mm square root-transformed volume. Mixed effect models were used to conduct statistical analyses. RESULTS Combined models found a significant-0.09 cm3 (95% CI: -0.14, -0.03; P = 0.0027) inverse association in PAT for every 1-point increase in the MedDiet score and a significant-0.26 cm3 (95% CI: -0.38, -0.14; P < 0.0001) inverse association in PAT for every 1-point increase in the DASH score. In combined models, the DPs were not significantly associated with lower odds of CAC progression; however, both DPs had significant interactions by diabetes status for CAC. Only the DASH diet was associated with lower odds of CAC progression in the nonDM group (OR: 0.96; 95% CI: 0.93, 0.99; P = 0.0224). CONCLUSIONS These data suggest that the DPs are associated with lower PAT, which may reduce future cardiovascular events. The DASH diet may be beneficial for lower odds of CAC progression in those without T1D.
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Affiliation(s)
- Leigh Ann Richardson
- Department of Epidemiology and Biostatistics, University of Nevada at Las Vegas, Las Vegas, NV, United States
| | - Arpita Basu
- Department of Kinesiology and Nutrition Sciences, University of Nevada at Las Vegas, Las Vegas, NV, United States.
| | - Lung-Chang Chien
- Department of Epidemiology and Biostatistics, University of Nevada at Las Vegas, Las Vegas, NV, United States
| | - Amy C Alman
- College of Public Health, University of South Florida, Tampa, FL, United States
| | - Janet K Snell-Bergeon
- Barbara Davis Center for Diabetes, Anschutz Medical Campus, University of Colorado, Aurora, CO, United States
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Podzolkov VI, Bragina AE, Osadchiy KK, Rodionova YN, Djafarova ZB, Khalenyan MH, Dishkaya SO. [Ectopic obesity in patients without manifested cardiovascular disease: regulations, frequency and clinical characteristics]. TERAPEVT ARKH 2022; 94:1072-1077. [PMID: 36286758 DOI: 10.26442/00403660.2022.09.201847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
AIM To determine the frequency, distribution and characteristics of ectopic obesity in patients without manifested cardiovascular disease. MATERIALS AND METHODS We examined 320 patients without manifested cardiovascular disease (average age 63.813.9 years), 38 of them without cardiovascular risk factors (healthy referent group). Anthropometric indicators were measured, body mass index (BMI) was calculated. Degree, type of obesity, lipid profile were evaluated. All patients underwent multi-detector chest computed tomography in spiral mode on Toshiba Aquilion Prime scanner using standardized protocol. Perivascular adipose tissue (PVAT) and pericardial adipose tissue (PAT) were detected using specialized semi-automatic software Tissue Composition Module QCTPro (Mindways Software, Inc., USA) after scanner calibration with special phantom. PAT and PVAT exceeding the 90th percentile in the healthy referent group were considered as ectopic obesity. Statistical analysis was performed using Statistica 10.0 software (StatSoft Inc., USA). RESULTS PAT volume 3.2 cm3 and PVAT volume 0.4 cm3 were criteria for high pericardial and high perivascular fat; 81 (25.2%) patients had ectopic obesity, 85 (26.5%) patients abdominal obesity; 146 (42.9%) people had high pericardial fat, 134 (39.4%) high perivascular fat. The frequency of ectopic obesity in patients with arterial hypertension (AH) was statistically significantly higher compared to persons without AH. Significantly more often ectopic forms of obesity were detected in patients with overweight and obesity. The high pericardial fat and high perivascular fat were found in patients with overweight and normal body weight. When comparing the clinical characteristics of patients with abdominal and ectopic obesity, metabolic parameters, as well as the incidence of hypertension and dyslipidemia, did not differ significantly. CONCLUSION Ectopic obesity can develop outside of global obesity. In addition, this type of obesity is accompanied by metabolic disorders and AH, regardless of the abdominal distribution of adipose tissue.
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Affiliation(s)
- V I Podzolkov
- Sechenov First Moscow State Medical University (Sechenov University)
| | - A E Bragina
- Sechenov First Moscow State Medical University (Sechenov University)
| | - K K Osadchiy
- Sechenov First Moscow State Medical University (Sechenov University)
| | - Y N Rodionova
- Sechenov First Moscow State Medical University (Sechenov University)
| | - Z B Djafarova
- Sechenov First Moscow State Medical University (Sechenov University)
| | - M H Khalenyan
- Sechenov First Moscow State Medical University (Sechenov University)
| | - S O Dishkaya
- Sechenov First Moscow State Medical University (Sechenov University)
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Panda S, Vimala LR, Livingstone R, Pearlin B, Irodi A, Joseph E, George OK. Can epicardial and pericardial adipose tissue volume predict the presence and severity of coronary artery disease? Pol J Radiol 2022; 87:e348-53. [PMID: 35892072 DOI: 10.5114/pjr.2022.117968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/01/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose Excessive accumulation of free fatty acids in the coronary arteries can lead to coronary artery disease (CAD). Quantification of epicardial adipose tissue (EAT) and pericardial adipose tissue (PAT) is beneficial to understand its relationship with CAD, hypertension (HT), and diabetes. Material and methods This retrospective study included 54 patients who underwent CT coronary angiogram using a multidetector row CT scanner. The EAT and PAT volumes from cardiac images were quantified using Image J software. The severity of CAD was graded using the CAD-RADS score. Results Twenty-nine patients had no CAD, 21 patients had significant CAD, and 4 patients had insignificant CAD. Out of 21 patients with significant CAD, 14 had involvement of multiple coronary arteries. The EAT and PAT volumes were higher in patients with HT, DM, CAD-present group and significant-CAD-present group, but this was not statistically significant except the PAT volume with respect to diabetes. Significant correlation was found between EAT volume and calcium score (p = 0.035) and between EAT volume and total cholesterol level (p = 0.017). Significant differences in the EAT volumes were found in different CAD-RADS categories in the right coronary artery (RCA). From the threshold values, it was observed that CAD can develop in LAD even at lower of EAT and PAT volumes. Conclusions Quantification of EAT and PAT volumes is beneficial in understanding its relationship with the presence and severity of coronary artery disease and its risk factors.
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Rao VN, Obeid MJ, Rigiroli F, Russell SD, Patel CB, Molinger J, Gupta RT, Agarwal R, Fudim M. Pericardial Adipose Tissue Volume and Left Ventricular Assist Device-Associated Outcomes. J Card Fail 2022; 28:149-153. [PMID: 34274515 PMCID: PMC8748267 DOI: 10.1016/j.cardfail.2021.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND Pericardial adipose tissue (PAT) is associated with adverse cardiovascular outcomes in those with and without established heart failure (HF). However, it is not known whether PAT is associated with adverse outcomes in patients with end-stage HF undergoing left ventricular assist device (LVAD) implantation. This study aimed to evaluate the associations between PAT and LVAD-associated outcomes. METHODS AND RESULTS We retrospectively measured computed tomography-derived PAT volumes in 77 consecutive adults who had available chest CT imaging prior to HeartMate 3 LVAD surgery between October 2015 and March 2019 at Duke University Hospital. Study groups were divided into above-median (≥219 cm3) and below-median (<219 cm3) PAT volume. Those with above-median PAT had a higher proportion of atrial fibrillation, chronic kidney disease and ischemic cardiomyopathy. Groups with above-median vs below-median PAT had similar Kaplan-Meier incidence rates over 2 years for (1) composite all-cause mortality, redo-LVAD surgery and cardiac transplantation (35.9 vs 32.2%; log-rank P = 0.65) and (2) composite incident hospitalizations for HF, gastrointestinal bleeding, LVAD-related infection, and stroke (61.5 vs 60.5%; log-rank P = 0.67). CONCLUSIONS In patients with end-stage HF undergoing LVAD therapy, PAT is not associated with worse 2-year LVAD-related outcomes. The significance of regional adiposity vs obesity in LVAD patients warrants further investigation.
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Affiliation(s)
- Vishal N. Rao
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina,Duke Clinical Research Institute, Durham, North Carolina
| | - Mary Jo Obeid
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina
| | - Francesca Rigiroli
- Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - Stuart D. Russell
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina
| | - Chetan B. Patel
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina
| | - Jeroen Molinger
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina
| | - Rajan T. Gupta
- Department of Radiology, Duke University Medical Center, Durham, North Carolina,Department of Surgery, Duke University Medical Center, Durham, North Carolina,Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, North Carolina
| | - Richa Agarwal
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina
| | - Marat Fudim
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina,Duke Clinical Research Institute, Durham, North Carolina
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Hendricks S, Dykun I, Balcer B, Totzeck M, Rassaf T, Mahabadi AA. Epicardial adipose tissue is a robust measure of increased risk of myocardial infarction - a meta-analysis on over 6600 patients and rationale for the EPIC-ACS study. Medicine (Baltimore) 2021; 100:e28060. [PMID: 34967351 PMCID: PMC8718235 DOI: 10.1097/md.0000000000028060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 11/10/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Epicardial adipose tissue (EAT) surrounds the heart and the coronary vessels. EAT produces pro- and anti-inflammatory cytokines. Several studies have already documented the association of EAT and cardiovascular risk factors as well as coronary artery disease manifestations. Currently computed tomography (CT) is considered the gold standard for measurement of 3-dimensional volume of EAT. In addition, echocardiography might be an easy accessible alternative in particular in an emergency setting. METHODS We performed a metaanalysis of existing studies describing the differences of EAT in patients with and without myocardial infarction. We used established databases and were searching for "epicardial adipose tissue" or "pericardial adipose tissue" and "myocardial infarction", "coronary events", or "acute coronary syndrome". We included over 6600 patients from 7 studies. Random effect models were calculated and all analyses were performed by using the Review Manager 5.3. RESULTS Patients with myocardial infarction had 37% (confidence interval [0.21-0.54], P value <.001)] higher measures of EAT compared to patients without myocardial infarction. Comparing studies using echocardiography vs CT for assessment of EAT thickness, similar relative differences in EAT with wide overlap of confidence intervals were observed (for echocardiography: 0.4 [0.04-0.76], for CT: 0.36 [0.16-0.57], P value <.001 for both). CONCLUSIONS Patients with myocardial infarction have more EAT as compared to patients without myocardial infarction independently of the used imaging modality. Further prospective studies are needed to evaluate, how quantification of EAT in clinical routine can improve patients management.
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11
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Wang P, Luo C, Zhu D, Song Y, Cao L, Luan H, Gao L, Zheng S, Li H, Tian G. Pericardial Adipose Tissue-Derived Leptin Promotes Myocardial Apoptosis in High-Fat Diet-Induced Obese Rats Through Janus Kinase 2/Reactive Oxygen Species/Na+/K+-ATPase Signaling Pathway. J Am Heart Assoc 2021; 10:e021369. [PMID: 34482701 PMCID: PMC8649551 DOI: 10.1161/jaha.121.021369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background Pathophysiologic mechanisms underlying cardiac structural and functional changes in obesity are complex and linked to adipocytokines released from pericardial adipose tissue (PAT) and cardiomyocyte apoptosis. Although leptin is involved in various pathological conditions, its role in paracrine action of pericardial adipose tissue on myocardial apoptosis remains unknown. This study was designed to investigate the role of PAT‐derived leptin on myocardial apoptosis in high‐fat diet–induced obese rats. Methods and Results Hearts were isolated from lean or high‐fat diet–induced obese Wistar rats for myocardial remodeling studies. Obese rats had abnormal myocardial structure, diastolic dysfunction, greatly elevated cardiac apoptosis, enhanced cardiac fibrosis, and increased oxidative stress level. ELISA detected significantly higher than circulating leptin level in PAT of obese, but not lean, rats. Western blot and immunohistochemical analyses demonstrated increased leptin receptor density in obese hearts. H9c2 cardiomyoblasts, after being exposed to PAT‐conditioned medium of obese rats, exhibited pronounced reactive oxygen species–mediated apoptosis, which was partially reversed by leptin antagonist. Moreover, leptin derived from PAT of obese rats inhibited Na+/K+‐ATPase activity of H9c2 cells through stimulating reactive oxygen species, thereby activating calcium‐dependent apoptosis. Pretreatment with specific inhibitors revealed that Janus kinase 2/signal transducer and activator of transcription 3 and phosphoinositide 3‐kinase/protein kinase B signaling pathways were involved in leptin‐induced myocardial apoptosis. Conclusions PAT‐derived leptin induces myocardial apoptosis in high‐fat diet–induced obese rats via activating Janus kinase 2/signal transducer and activator of transcription 3/reactive oxygen species signaling pathway and inhibiting its downstream Na+/K+‐ATPase activity.
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Affiliation(s)
- Ping Wang
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Chaodi Luo
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Danjun Zhu
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Yan Song
- Department of Ultrasound First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Lifei Cao
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Hui Luan
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Lan Gao
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Shuping Zheng
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Hao Li
- Intensive Care Unit First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
| | - Gang Tian
- Department of Cardiology First Affiliated Hospital of Xi'an Jiaotong University Shaanxi China
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12
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Zimmermann GS, Ruether T, von Ziegler F, Greif M, Tittus J, Schenzle J, Becker C, Becker A. Increased Pericardial Adipose Tissue in Smokers. J Clin Med 2021; 10:3382. [PMID: 34362164 DOI: 10.3390/jcm10153382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Pericardial adipose tissue (PAT), a visceral fat depot directly located to the heart, is associated with atherosclerotic and inflammatory processes. The extent of PAT is related to the prevalence of coronary heart disease and might be used for cardiovascular risk prediction. This study aimed to determine the effect of smoking on the extent of PAT. METHODS We retrospectively examined 1217 asymptomatic patients (490 females, age 58.3 ± 8.3 years, smoker n = 573, non-smoker n = 644) with a multislice CT scanner and determined the PAT volume. Coronary risk factors were determined at inclusion, and a multivariate analysis was performed to evaluate the influence of smoking on PAT independent from accompanying risk factors. RESULTS The mean PAT volume was 215 ± 107 mL in all patients. The PAT volume in smokers was significantly higher compared to PAT volume in non-smokers (231 ± 104 mL vs. 201 ± 99 mL, p = 0.03). Patients without cardiovascular risk factors showed a significantly lower PAT volume (153 ± 155 mL, p < 0.05) compared to patients with more than 1 risk factor. Odds ratio was 2.92 [2.31, 3.61; p < 0.001] for elevated PAT in smokers. CONCLUSION PAT as an individual marker of atherosclerotic activity and inflammatory burden was elevated in smokers. The finding was independent from metabolic risk factors and might therefore illustrate the increased inflammatory activity in smokers in comparison to non-smokers.
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13
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Launbo N, Zobel EH, von Scholten BJ, Faerch K, Jørgensen PG, Christensen RH. Targeting epicardial adipose tissue with exercise, diet, bariatric surgery or pharmaceutical interventions: A systematic review and meta-analysis. Obes Rev 2021; 22:e13136. [PMID: 32896056 DOI: 10.1111/obr.13136] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 08/06/2020] [Indexed: 12/22/2022]
Abstract
Epicardial adipose tissue (EAT) and pericardial adipose tissue (PAT) are metabolically active fat depots implicated in cardiovascular disease, and EAT has potential as a novel cardiac risk factor, suitable as a target for interventions. The objective of this systematic review and meta-analysis was to investigate the evidence whether EAT and PAT volume can be reduced by weight-loss interventions (exercise, diet, bariatric surgery or pharmaceutical interventions). A systematic literature search identified 34 studies that were included in the qualitative synthesis (exercise, n = 10, diet, n = 5, bariatric surgery, n = 9 and pharmaceutical interventions, n = 10). Of the 34 studies, 10 reported sufficient data to be included in the meta-analysis. The meta-analysis was only conducted for changes in EAT volume, since only few controlled studies reported changes in PAT (n = 3) or total cardiac adipose tissue volume (n = 1). A significant pooled effect size (ES) for reduction in EAT volume was observed following weight-loss interventions as compared with control interventions (ES = -0.89, 95% CI: -1.23 to -0.55, P < 0.001). When comparing the effect of exercise training versus control on EAT volume reduction, there was a significant pooled ES favouring exercise training (ES: -1.11, 95% CI: -1.57 to -0.65, P < 0.001). Similarly, the ES of pharmaceutical versus control interventions on EAT volume reduction was significant, favouring pharmaceutical interventions (ES: -0.79, 95% CI: -1.37 to -0.21, P < 0.0072). In conclusion, this systematic review and meta-analysis provides evidence that exercise, diet, bariatric surgery and pharmaceutical interventions can reduce cardiac adipose tissue volume.
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Affiliation(s)
- Natja Launbo
- Centre for Physical Activity Research, Rigshospitalet, Copehagen, Denmark
| | | | | | - Kristine Faerch
- Steno Diabetes Center Copenhagen, Gentofte, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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14
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Yi SY, Steffen LM, Terry JG, R Jacobs D, Duprez D, Steffen BT, Zhou X, Shikany JM, Harnack L, J Carr J. Added sugar intake is associated with pericardial adipose tissue volume. Eur J Prev Cardiol 2020; 27:2016-2023. [PMID: 32594762 DOI: 10.1177/2047487320931303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AIM The purpose of this study was to determine the relationships of pericardial adipose tissue and visceral adipose tissue volume with added sugar and sugar-sweetened beverage intakes. We hypothesized that both added sugar and sugar-sweetened beverages were positively associated with pericardial adipose tissue and visceral adipose tissue volumes in black and white men and women enrolled in the prospective Coronary Artery Risk Development in Young Adults study. METHODS AND RESULTS Dietary intake was assessed by diet history at baseline, year 7 and year 20 examinations in 3070 participants aged 18-30 and generally healthy at baseline. After 25 years follow-up, participants underwent a computed tomography scan of chest and abdomen; the computed tomography scans were read, and pericardial adipose tissue, visceral adipose tissue, and subcutaneous adipose tissue volumes were calculated. Quintiles were created for the average of baseline, year 7 and year 20 added sugar and for the average of sugar-sweetened beverages. General linear regression analysis evaluated the associations of pericardial adipose tissue and visceral adipose tissue volumes across quintiles of added sugar and across quintiles of sugar-sweetened beverage intakes adjusted for potential confounding factors. In a multivariable model, pericardial adipose tissue volume was higher across increasing quintiles of added sugar and sugar-sweetened beverage intakes (ptrend = 0.001 and ptrend < 0.001, respectively). A similar relation was observed for visceral adipose tissue (ptrend < 0.001 for both added sugar and sugar-sweetened beverages). CONCLUSIONS Long-term intakes of added sugar and sugar-sweetened beverages were associated with higher pericardial adipose tissue, visceral adipose tissue, and subcutaneous adipose tissue volumes. Because these ectopic fat depots are associated with greater risk of disease incidence, these findings support limiting intakes of added sugar and sugar-sweetened beverages.
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Affiliation(s)
- So-Yun Yi
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, USA
| | - Lyn M Steffen
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, USA
| | - James G Terry
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center USA
| | - David R Jacobs
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, USA
| | - Daniel Duprez
- Department of Medicine, University of Minnesota Medical School, USA
| | - Brian T Steffen
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, USA
| | - Xia Zhou
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, USA
| | - James M Shikany
- Division of Preventive Medicine, University of Alabama at Birmingham, USA
| | - Lisa Harnack
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, USA
| | - John J Carr
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center USA
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15
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Pérez LM, de Lucas B, Gálvez BG. BMPER is upregulated in obesity and seems to have a role in pericardial adipose stem cells. J Cell Physiol 2020; 236:132-145. [PMID: 32468615 DOI: 10.1002/jcp.29829] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 12/23/2022]
Abstract
Pericardial adipose tissue (PAT), a visceral fat depot enveloping the heart, is an active endocrine organ and a source of free fatty acids and inflammatory cytokines. As in other fat adult tissues, PAT contains a population of adipose stem cells; however, whether these cells and/or their environment play a role in physiopathology is unknown. We analyzed several stem cell-related properties of pericardial adipose stem cells (PSCs) isolated from obese and ex-obese mice. We also performed RNA-sequencing to profile the transcriptional landscape of PSCs isolated from the different diet regimens. Finally, we tested whether these alterations impacted on the properties of cardiac mesoangioblasts isolated from the same mice. We found functional differences between PSCs depending on their source: specifically, PSCs from obese PSC (oPSC) and ex-obese PSC (dPSC) mice showed alterations in apoptosis and migratory capacity when compared with lean, control PSCs, with increased apoptosis in oPSCs and blunted migratory capacity in oPSCs and dPSCs. This was accompanied by different gene expression profiles across the cell types, where we identified some genes altered in obese conditions, such as BMP endothelial cell precursor-derived regulator (BMPER), an important regulator of BMP-related signaling pathways for endothelial cell function. The importance of BMPER in PSCs was confirmed by loss- and gain-of-function studies. Finally, we found an altered production of BMPER and some important chemokines in cardiac mesoangioblasts in obese conditions. Our findings point to BMPER as a potential new regulator of PSC function and suggest that its dysregulation could be associated with obesity and may impact on cardiac cells.
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Affiliation(s)
- Laura M Pérez
- Health and Biomedical Sciences Faculty, European University, Madrid, Spain
| | - Beatriz de Lucas
- Health and Biomedical Sciences Faculty, European University, Madrid, Spain
| | - Beatriz G Gálvez
- Health and Biomedical Sciences Faculty, European University, Madrid, Spain
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16
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Christensen RH, von Scholten BJ, Lehrskov LL, Rossing P, Jørgensen PG. Epicardial adipose tissue: an emerging biomarker of cardiovascular complications in type 2 diabetes? Ther Adv Endocrinol Metab 2020; 11:2042018820928824. [PMID: 32518616 PMCID: PMC7252363 DOI: 10.1177/2042018820928824] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 05/03/2020] [Indexed: 12/13/2022] Open
Abstract
Type 2 diabetes (T2D) is associated with an increased risk of cardiovascular disease and heart failure, which highlights the need for improved understanding of factors contributing to the pathophysiology of these complications as they are the leading cause of mortality in T2D. Patients with T2D have high levels of epicardial adipose tissue (EAT). EAT is known to secrete inflammatory factors, lipid metabolites, and has been proposed to apply mechanical stress on the cardiac muscle that may accelerate atherosclerosis, cardiac remodeling, and heart failure. High levels of EAT in patients with T2D have been associated with atherosclerosis, diastolic dysfunction, and incident cardiovascular events, and this fat depot has been suggested as an important link coupling diabetes, obesity, and cardiovascular disease. Despite this, the predictive potential of EAT in general, and in patients with diabetes, is yet to be established, and, up until now, the clinical relevance of EAT is therefore limited. Should this link be established, importantly, studies show that this fat depot can be modified both by pharmacological and lifestyle interventions. In this review, we first introduce the role of adipose tissue in T2D and present mechanisms involved in the pathophysiology of EAT and pericardial adipose tissue (PAT) in general, and in patients with T2D. Next, we summarize the evidence that these fat depots are elevated in patients with T2D, and discuss whether they might drive the high cardiometabolic risk in patients with T2D. Finally, we discuss the clinical potential of cardiac adipose tissues, address means to target this depot, and briefly touch upon underlying mechanisms and future research questions.
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Affiliation(s)
| | | | - Louise Lang Lehrskov
- Center for Inflammation and Metabolism/Center for Physical Activity Research, Rigshospitalet, Denmark
| | - Peter Rossing
- Steno Diabetes Center Copenhagen, Gentofte, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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17
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Christensen RH, Hansen CS, von Scholten BJ, Jensen MT, Pedersen BK, Schnohr P, Vilsbøll T, Rossing P, Jørgensen PG. Epicardial and pericardial adipose tissues are associated with reduced diastolic and systolic function in type 2 diabetes. Diabetes Obes Metab 2019; 21:2006-2011. [PMID: 31050126 DOI: 10.1111/dom.13758] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/19/2019] [Accepted: 04/30/2019] [Indexed: 11/30/2022]
Abstract
The aim of this study was to investigate the association of epicardial (EAT) and pericardial (PAT) adipose tissues with myocardial function in type 2 diabetes (T2D). EAT and PAT were measured by ultrasound in 770 patients with T2D and 234 age- and sex-matched non-diabetic controls. Echocardiography was performed, including tissue Doppler imaging and 2D speckle tracking. Patients with T2D versus controls had increased EAT (4.6 ± 1.8 mm vs. 3.4 ± 1.2 mm, P < 0.0001) and PAT (6.3 ± 2.8 mm vs. 5.3 ± 2.4 mm, P < 0.0001). EAT and PAT were associated with structural cardiac measures both in T2D patients and controls (all P < 0.043), but only in T2D patients with functional measures: PAT was associated with impaired global longitudinal strain [beta coefficient (SE)] [0.11% (0.04), P = 0.002], while EAT was associated with reduced diastolic function by lateral early diastolic myocardial velocity (e'lat ) [-0.31 (0.05) cm/s, P = 0.001], mitral inflow velocities: peak early (E)/peak atrial (A) ratio [-0.02 (0.01), P = 0.001] and lateral E/e'lat [0.36 (0.10), P < 0.001]. However, no interaction was found between diabetes status and PAT (P = 0.75) or EAT (P = 0.45). Adipose tissue in intimate relation to the myocardium is higher in patients with T2D versus controls and is associated with functional myocardial measures in T2D.
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Affiliation(s)
- Regitse H Christensen
- Centre for Inflammation and Metabolism/Centre for Physical Activity Research, Rigshospitalet, Copenhagen, Denmark
- The Diabetes Complications Research Group, Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Christian S Hansen
- The Diabetes Complications Research Group, Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | | | - Magnus T Jensen
- Department of Cardiology, Glostrup-Rigshospitalet, Copenhagen, Denmark
- Department of Cardiology, Herlev-Gentofte Hospital, Gentofte, Denmark
| | - Bente K Pedersen
- Centre for Inflammation and Metabolism/Centre for Physical Activity Research, Rigshospitalet, Copenhagen, Denmark
| | - Peter Schnohr
- Department of Cardiology, Copenhagen City Heart Study, Frederiksberg Hospital, Copenhagen, Denmark
| | - Tina Vilsbøll
- The Diabetes Complications Research Group, Steno Diabetes Center Copenhagen, Gentofte, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Peter Rossing
- The Diabetes Complications Research Group, Steno Diabetes Center Copenhagen, Gentofte, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Peter G Jørgensen
- Department of Cardiology, Herlev-Gentofte Hospital, Gentofte, Denmark
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18
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Zsóri G, Illés D, Ivány E, Kosár K, Holzinger G, Tajti M, Pálinkás E, Szabovik G, Nagy A, Palkó A, Czakó L. In New-Onset Diabetes Mellitus, Metformin Reduces Fat Accumulation in the Liver, But Not in the Pancreas or Pericardium. Metab Syndr Relat Disord 2019; 17:289-295. [PMID: 31013454 DOI: 10.1089/met.2018.0086] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background: Nonalcoholic fatty pancreas and liver disease (NAFPD and NAFLD) and pericardial adipose tissue (PAT) are often associated with type 2 diabetes mellitus (T2DM). Our aim was to evaluate the incidence rate of NAFLD and NAFPD, PAT size, and the effect of metformin treatment on NAFLD, NAFPD, and PAT in new-onset T2DM (NODM). Methods: Seventeen patients with NODM and 10 subjects used as a control group were involved in the study. Computed tomography (CT) and laboratory tests were performed before the beginning of metformin therapy and 4 months afterward. PAT and the amount of fat in the pancreas and liver were determined by X-ray attenuation during unenhanced CT examination and compared with the values for the control subjects. Results: Metabolic parameters improved significantly after metformin therapy. NAFLD was diagnosed in 64.7% of the patients with NODM and in 10% of the control subjects. The radiation absorption of the liver was significantly lower in the patients with NODM compared with the control group and significantly higher after metformin therapy compared with the baseline values. Only six patients (35.3%) had NAFLD after metformin therapy. NAFPD was diagnosed in 82.3% of the patients with NODM and in 20% of the control subjects. The radiation absorption of the pancreas was significantly lower in the patients with NODM compared with the control group but did not change significantly after treatment. PAT size was significantly larger in the patients with NODM and did not change significantly after metformin treatment. Conclusions: NAFLD, NAFPD, and increased PAT were detected in the majority of patients with NODM. Metformin therapy decreased the amount of fat in the liver in parallel with an improvement in the metabolic parameters and may, thus, be beneficial for preventing the late consequences of NAFLD.
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Affiliation(s)
- Gábor Zsóri
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Dóra Illés
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Emese Ivány
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Klára Kosár
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Gábor Holzinger
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Máté Tajti
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Eszter Pálinkás
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Géza Szabovik
- 2 Department of Radiology, University of Szeged, Szeged, Hungary
| | - András Nagy
- 2 Department of Radiology, University of Szeged, Szeged, Hungary
| | - András Palkó
- 2 Department of Radiology, University of Szeged, Szeged, Hungary
| | - László Czakó
- 1 First Department of Medicine, University of Szeged, Szeged, Hungary
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Hjelmgaard K, Eschen RB, Schmidt EB, Andreasen JJ, Lundbye-Christensen S. Fatty Acid Composition in Various Types of Cardiac Adipose Tissues and Its Relation to the Fatty Acid Content of Atrial Tissue. Nutrients 2018; 10:nu10101506. [PMID: 30326589 PMCID: PMC6213264 DOI: 10.3390/nu10101506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/04/2018] [Accepted: 10/12/2018] [Indexed: 11/19/2022] Open
Abstract
Diet, with its content of various types of fatty acids (FAs), is of great importance for cellular function. Adipose tissue (AT) serves as a storage for dietary FAs, but after appropriate activation it may also offer important biological properties, e.g., by releasing adipokines and cytokines to the surrounding milieu. Such effects may depend on the diet and type of FA involved. Similarly, the composition of FAs in the heart is also likely to be important for cardiac function. We investigated samples of epicardial adipose tissue (EAT), pericardial adipose tissue (PAT), subcutaneous adipose tissue (SCAT), and tissue from the right atrial appendage to compare the FA compositions in patients undergoing elective cardiac surgery. Minor differences among AT compartments were found, while the comparison of atrial tissue and EAT showed major differences in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), and n-3 and n-6 polyunsaturated fatty acids (PUFAs). These findings may be of importance for understanding biological availability, dietary effects, and the effects of FAs on the heart.
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Affiliation(s)
- Katrin Hjelmgaard
- Department of Cardiology, Aalborg University Hospital, 9000 Aalborg, Denmark.
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark.
| | - Rikke B Eschen
- Department of Cardiology, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Erik B Schmidt
- Department of Cardiology, Aalborg University Hospital, 9000 Aalborg, Denmark.
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark.
- Atrial Fibrillation Study Group, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Jan J Andreasen
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark.
- Atrial Fibrillation Study Group, Aalborg University Hospital, 9000 Aalborg, Denmark.
- Department of Cardiothoracic Surgery, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Søren Lundbye-Christensen
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark.
- Atrial Fibrillation Study Group, Aalborg University Hospital, 9000 Aalborg, Denmark.
- Unit of Clinical Biostatistics, Aalborg University, 9000 Aalborg, Denmark.
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20
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Wang CY, Li SJ, Wu TW, Lin HJ, Chen JW, Mersmann HJ, Ding ST, Chen CY. The role of pericardial adipose tissue in the heart of obese minipigs. Eur J Clin Invest 2018; 48:e12942. [PMID: 29682734 DOI: 10.1111/eci.12942] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 04/18/2018] [Indexed: 01/09/2023]
Abstract
BACKGROUND Pericardial adipose tissue (PAT) volume is highly associated with the presence and severity of cardiometabolic diseases, but the underlying mechanism is unknown. We previously demonstrated that a high-fat diet (HFD) induced metabolic dysregulation, cardiac fibrosis and accumulation of more PAT in minipigs. This study used our obese minipig model to investigate the characteristics of PAT and omental visceral fat (VAT) induced by a HFD, and the potential link between PAT and HFD-related myocardial fibrosis. MATERIALS AND METHODS Five-month-old Lee-Sung minipigs were made obese by feeding a HFD for 6 months. RESULTS The HFD induced dyslipidemia, cardiac fibrosis and more fat accumulation in the visceral and pericardial depots. The HFD changes the fatty acid composition in the adipose tissue by decreasing the portion of linoleic acid in the VAT and PAT. No arachidonic acid was detected in the VAT and PAT of control pigs, whereas it existed in the same tissues of obese pigs fed the HFD. Compared with the control pigs, elevated levels of malondialdehyde and TNFα were exhibited in the plasma and PAT of obese pigs. HFD induced greater size of adipocytes in VAT and PAT. Higher levels of GH, leptin, OPG, PDGF, resistin, SAA and TGFβ were observed in obese pig PAT compared to VAT. CONCLUSION This study demonstrated the similarities and dissimilarities between PAT and VAT under HFD stimulus. In addition, this study suggested that alteration in PAT contributed to the myocardial damage.
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Affiliation(s)
- Chia-Yu Wang
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Sin-Jin Li
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Twin-Way Wu
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Han-Jen Lin
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Jyun-Wei Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Harry J Mersmann
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Shih-Torng Ding
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Ching-Yi Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
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21
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Kahl KG, Deuschle M, Stubbs B, Schweiger U. Visceral adipose tissue in patients with severe mental illness. Horm Mol Biol Clin Investig 2018; 33:hmbci-2018-0007. [PMID: 29547392 DOI: 10.1515/hmbci-2018-0007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 02/15/2018] [Indexed: 12/25/2022]
Abstract
Background Severe mental illnesses (SMIs), i.e. major depression, schizophrenia and bipolar disorder, are associated with an elevated risk for the development of type-2 diabetes mellitus and cardiovascular disorders. Several factors have been associated with increased cardiometabolic morbidity and mortality in SMI, including lifestyle factors (smoking, inactivity, unhealthy diet), endocrine and immunologic alterations; however, the underlying mechanisms remain to be fully uncovered. It is now well accepted that visceral adipose tissue (VAT) promotes the development of cardiometabolic disorders, at least in part by inflammatory and metabolic functions. Methods This paper reviews studies concerning VAT, with special focus on intra-abdominal and pericardial adipose tissue, in SMI. Results In patients with SMI, several studies have been performed concerning VAT. Most of these studies reported alterations of VAT particularly in patients with major depression and schizophrenia, independent of body weight and body mass index. Some of the studies also reported an increased cardiometabolic risk. Conclusion Patients with SMI are at increased risk of developing cardiometabolic disorders, and display increased amounts of VAT. As studies so far were mainly performed on patients before the onset of cardiometabolic disorders, VAT may serve as a biomarker for patients with SMI to assess cardiometabolic risks beyond established risk scores. Further, interventions aiming at reducing VAT in SMI are highly recommended in long-term multimodal treatment plans.
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Affiliation(s)
- Kai G Kahl
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany, Phone: +49 511-5322495, Fax: +49 511-5328573
| | - Michael Deuschle
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Brendon Stubbs
- Physiotherapy Department, South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK.,Health Service and Population Research Department, Institute of Psychiatry, King's College London, London, UK
| | - Ulrich Schweiger
- Department of Psychiatry and Psychotherapy, University of Lübeck Medical School, Lübeck, Germany
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Abstract
Metabolic and cardiovascular diseases are increasing worldwide due to the rise in the obesity epidemic. The metabolic consequences of obesity vary by distribution of adipose tissue. Visceral and ectopic adipose accumulation are associated with adverse cardiometabolic consequences, while gluteal-femoral adipose accumulation are negatively associated with these adverse complications and subcutaneous abdominal adipose accumulation is more neutral in its associations. Gender, race and ethnic differences in adipose tissue distribution have been described and could account for the observed differences in risk for cardiometabolic disease. The mechanisms behind the differential impact of adipose tissue on cardiometabolic risk have started to be unraveled and include differences in adipocyte biology, inflammatory profile, connection to systemic circulation and most importantly the inability of the subcutaneous adipose tissue to expand in response to positive energy balance.
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Affiliation(s)
- Susan Sam
- University of Chicago Pritzker School of Medicine, Department of Medicine, Section of Endocrinology, 5841 S. Maryland Avenue, Chicago, IL 60637, USA, Phone: +773-702 5641, Fax: +773-702 7686
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23
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Wu J, Zhang X, Li X, Yang L. Adipose tissue volume differences around the heart between subjects without coronary atherosclerosis and coronary heart disease patients. Acta Cardiol 2016; 71:291-8. [PMID: 27594124 DOI: 10.2143/ac.71.3.3152089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Yuan M, Hsu FC, Bowden DW, Xu J, Smith SC, Wagenknecht LE, Comeau ME, Divers J, Register TC, Carr JJ, Langefeld CD, Freedman BI. Relationships between measures of adiposity with subclinical atherosclerosis in patients with type 2 diabetes. Obesity (Silver Spring) 2016; 24:1810-8. [PMID: 27356020 PMCID: PMC4963287 DOI: 10.1002/oby.21540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 04/06/2016] [Accepted: 04/06/2016] [Indexed: 01/21/2023]
Abstract
OBJECTIVE Assess cross-sectional relationships between body mass index (BMI), waist circumference (WC), pericardial (PAT), visceral (VAT), and subcutaneous adipose tissue (SAT) volumes with calcified plaque (CP) in African Americans (AAs) and European Americans (EAs) with type 2 diabetes. METHODS Computed tomography measured PAT, VAT, SAT, and CP in coronary arteries (CAC), carotid arteries, and aorta. Generalized estimating equations models were fitted to test for associations between adiposity and CP, stratified by ethnicity while accounting for familial correlations. RESULTS AAs (N = 753) vs. EAs (N = 562) had significantly lower PAT and VAT, despite equal or higher BMI. In multivariable models adjusting for age, gender, education, HbA1c, statins, smoking, cardiovascular disease, hypertension, nephropathy, and C-reactive protein, PAT positively associated with presence of CAC in AAs (P < 0.001), not EAs (P = 0.68; ethnicity interaction P < 0.01). Inverse associations were detected between SAT and severity of aorta CP (P < 0.01) in AAs and between BMI, WC, and SAT with severity of aorta CP in all participants. CONCLUSIONS Ethnic- and gender-specific differences in BMI, WC, PAT, SAT, and VAT were present in AAs and EAs with diabetes. Only PAT was positively associated with CAC in AAs; paradoxical inverse associations were seen between several other adiposity measures and subclinical cardiovascular disease.
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Affiliation(s)
- Mingxia Yuan
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Fang-Chi Hsu
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Donald W. Bowden
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Jianzhao Xu
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - S. Carrie Smith
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Lynne E. Wagenknecht
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Mary E. Comeau
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Jasmin Divers
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Thomas C. Register
- Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - J. Jeffrey Carr
- Department of Radiology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Carl D. Langefeld
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Barry I. Freedman
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Centers for Genomics and Personalized Medicine Research & Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- Center for Public Health Genomics, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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Mahajan R, Kuklik P, Grover S, Brooks AG, Wong CX, Sanders P, Selvanayagam JB. Cardiovascular magnetic resonance of total and atrial pericardial adipose tissue: a validation study and development of a 3 dimensional pericardial adipose tissue model. J Cardiovasc Magn Reson 2013; 15:73. [PMID: 24498950 PMCID: PMC3765997 DOI: 10.1186/1532-429x-15-73] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 08/08/2013] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Recently pericardial adipose tissue (PAT) has been shown to be an independent predictor of atrial fibrillation (AF). Atrial PAT may influence underlying atrial musculature creating a substrate for AF. This study sought to validate the assessment of total and atrial PAT by standard cardiovascular magnetic resonance (CMR) measures and describe and validate a three dimensional atrial PAT model. METHODS 10 merino cross sheep underwent CMR using a 1.5 Tesla system (Siemens, Sonata, Erlangen, Germany). Atrial and ventricular short axis (SA) images were acquired, using ECG -gated steady state free precession sequences. In order to quantify total volume of adipose tissue, a three dimensional model was constructed from consecutive end-diastolic images using semi-automated software. Regions of adipose tissue were marked in each slice followed by linear interpolation of pixel intensities in spaces between consecutive image slices. Total volume of adipose tissue was calculated as a total volume of the three dimensional model and the mass estimated from volume measurements. The sheep were euthanized and pericardial adipose tissue was removed and weighed for comparison to the corresponding CMR measurements. RESULTS All CMR adipose tissue estimates significantly correlated with autopsy measurements (ICC > 0.80; p < 0.03). Intra- observer reliability in CMR measures was high, with 95% levels of agreement within 5.5% (ICC = 0.995) for total fat mass and its individual atrial (95% CI ± 8.3%, ICC = 0.993) and ventricular components (95% CI ± 6.6%, ICC = 0.989). Inter- observer 95% limits of agreement were within ± 10.7% (ICC = 0.979), 7.4% (ICC = 0.991) and 7.2% (ICC = 0.991) for atrial, ventricular and total pericardial adipose tissue, respectively. CONCLUSION This study validates the use of a semi-automated three dimensional atrial PAT model utilizing standard (clinical) CMR sequences for accurate and reproducible assessment of atrial PAT. The measurement of local cardiac fat stores via this methodology could provide a sensitive tool to examine the regional effect of fat deposition on atrial substrate which potentially may influence AF ablation strategies in obese patients.
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Affiliation(s)
- Rajiv Mahajan
- Centre for Heart Rhythm Disorders (CHRD), University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Pawel Kuklik
- Centre for Heart Rhythm Disorders (CHRD), University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Suchi Grover
- Discipline of Medicine, Flinders University and Flinders Medical Centre, Bedford Park, Australia
| | - Anthony G Brooks
- Centre for Heart Rhythm Disorders (CHRD), University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Christopher X Wong
- Centre for Heart Rhythm Disorders (CHRD), University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders (CHRD), University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Joseph B Selvanayagam
- Discipline of Medicine, Flinders University and Flinders Medical Centre, Bedford Park, Australia
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