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Wilkerson JL, Tatum SM, Holland WL, Summers SA. Ceramides are fuel gauges on the drive to cardiometabolic disease. Physiol Rev 2024; 104:1061-1119. [PMID: 38300524 PMCID: PMC11381030 DOI: 10.1152/physrev.00008.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/02/2024] Open
Abstract
Ceramides are signals of fatty acid excess that accumulate when a cell's energetic needs have been met and its nutrient storage has reached capacity. As these sphingolipids accrue, they alter the metabolism and survival of cells throughout the body including in the heart, liver, blood vessels, skeletal muscle, brain, and kidney. These ceramide actions elicit the tissue dysfunction that underlies cardiometabolic diseases such as diabetes, coronary artery disease, metabolic-associated steatohepatitis, and heart failure. Here, we review the biosynthesis and degradation pathways that maintain ceramide levels in normal physiology and discuss how the loss of ceramide homeostasis drives cardiometabolic pathologies. We highlight signaling nodes that sense small changes in ceramides and in turn reprogram cellular metabolism and stimulate apoptosis. Finally, we evaluate the emerging therapeutic utility of these unique lipids as biomarkers that forecast disease risk and as targets of ceramide-lowering interventions that ameliorate disease.
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Affiliation(s)
- Joseph L Wilkerson
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, United States
| | - Sean M Tatum
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, United States
| | - William L Holland
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, United States
| | - Scott A Summers
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, United States
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2
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Wretlind A, Curovic VR, de Zawadzki A, Suvitaival T, Xu J, Zobel EH, von Scholten BJ, Ripa RS, Kjaer A, Hansen TW, Vilsbøll T, Vestergaard H, Rossing P, Legido-Quigley C. Ceramides are decreased after liraglutide treatment in people with type 2 diabetes: a post hoc analysis of two randomized clinical trials. Lipids Health Dis 2023; 22:160. [PMID: 37752566 PMCID: PMC10521385 DOI: 10.1186/s12944-023-01922-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Specific ceramides have been identified as risk markers for cardiovascular disease (CVD) years before onset of disease. Treatment with the glucagon-like peptide-1 receptor agonist (GLP-1RA) liraglutide has been shown to induce beneficial changes in the lipid profile and reduce the risk of CVD. Reducing lipotoxic lipids with an antidiabetic drug therapy could be a path towards precision medicine approaches for the treatment of complications to diabetes. In this post-hoc study, an investigation was carried out on the effect of liraglutide on CVD-risk associated ceramides in two randomized clinical trials including participants with type 2 diabetes (T2D). METHODS This study analyzed plasma samples from two independent randomized placebo-controlled clinical trials. The first trial, Antiproteinuric Effects of Liraglutide Treatment (LirAlbu12) followed a crossover design where 27 participants were treated for 12 weeks with either liraglutide (1.8 mg/d) or placebo, followed by a four-week washout period, and then another 12 weeks of the other treatment. The second clinical trial, Effect of Liraglutide on Vascular Inflammation in Type-2 Diabetes (LiraFlame26), lasted for 26 weeks and followed a parallel design, where 102 participants were randomized 1:1 to either liraglutide or placebo. Heresix prespecified plasma ceramides were measured using liquid chromatography mass spectrometry and assessed their changes using linear mixed models. Possible confounders were assessed with mediation analyses. RESULTS In the LiraFlame26 trial, 26-week treatment with liraglutide resulted in a significant reduction of two ceramides associated with CVD risk, C16 Cer and C24:1 Cer (p < 0.05) compared to placebo. None of the remaining ceramides showed statistically significant changes in response to liraglutide treatment compared to placebo. Significant changes in ceramides were not found after 12-weeks of liraglutide treatment in the LirAlbu12 trial. Mediation analyses showed that weight loss did not affect ceramide reduction. CONCLUSIONS It was demonstrated that treatment with liraglutide resulted in a reduction in C16 Cer and C24:1 Cer after 26 weeks of treatment. These findings suggest the GLP-1RA can be used to modulate ceramides in addition to its other properties. TRIAL REGISTRATION Clinicaltrial.gov identifier: NCT02545738 and NCT03449654.
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Affiliation(s)
- Asger Wretlind
- Steno Diabetes Center Copenhagen, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | | | | | - Jin Xu
- King's College London, London, UK
| | - Emilie Hein Zobel
- Steno Diabetes Center Copenhagen, Herlev, Denmark
- Novo Nordisk A/S, Måløv, Denmark
| | | | - Rasmus Sejersten Ripa
- Department of Clinical Physiology and Nuclear Medicine & Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet & Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Kjaer
- Department of Clinical Physiology and Nuclear Medicine & Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet & Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Tina Vilsbøll
- Steno Diabetes Center Copenhagen, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Vestergaard
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Medicine, Bornholms Hospital, Rønne, Denmark
| | - Peter Rossing
- Steno Diabetes Center Copenhagen, Herlev, Denmark.
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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3
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Gruzdeva O, Dyleva Y, Belik E, Uchasova E, Ponasenko A, Ivanov S, Zinets M, Stasev A, Kutikhin A, Markova V, Poddubnyak A, Gorbatovskaya E, Fanaskova E, Barbarash O. Expression of Ceramide-Metabolizing Enzymes in the Heart Adipose Tissue of Cardiovascular Disease Patients. Int J Mol Sci 2023; 24:ijms24119494. [PMID: 37298446 DOI: 10.3390/ijms24119494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Here, we examined the expression of ceramide metabolism enzymes in the subcutaneous adipose tissue (SAT), epicardial adipose tissue (EAT) and perivascular adipose tissue (PVAT) of 30 patients with coronary artery disease (CAD) and 30 patients with valvular heart disease (VHD) by means of quantitative polymerase chain reaction and fluorescent Western blotting. The EAT of patients with CAD showed higher expression of the genes responsible for ceramide biosynthesis (SPTLC1, SPTLC2, CERS1, 5, 6, DEGS1, and SMPD1) and utilization (ASAH1, SGMS1). PVAT was characterized by higher mRNA levels of CERS3, CERS4, DEGS1, SMPD1, and ceramide utilization enzyme (SGMS2). In patients with VHD, there was a high CERS4, DEGS1, and SGMS2 expression in the EAT and CERS3 and CERS4 expression in the PVAT. Among patients with CAD, the expression of SPTLC1 in SAT and EAT, SPTLC2 in EAT, CERS2 in all studied AT, CERS4 and CERS5 in EAT, DEGS1 in SAT and EAT, ASAH1 in all studied AT, and SGMS1 in EAT was higher than in those with VHD. Protein levels of ceramide-metabolizing enzymes were consistent with gene expression trends. The obtained results indicate an activation of ceramide synthesis de novo and from sphingomyelin in cardiovascular disease, mainly in EAT, that contributes to the accumulation of ceramides in this location.
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Affiliation(s)
- Olga Gruzdeva
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
- Department of Pathophysiology, Kemerovo State Medical University, 650029 Kemerovo, Russia
| | - Yulia Dyleva
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Ekaterina Belik
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Evgenia Uchasova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Anastasia Ponasenko
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Sergey Ivanov
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Maxim Zinets
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Alexander Stasev
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Anton Kutikhin
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Victoria Markova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Alena Poddubnyak
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Evgenia Gorbatovskaya
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Elena Fanaskova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
| | - Olga Barbarash
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6, Sosnovy Boulevard, 650002 Kemerovo, Russia
- Department of Pathophysiology, Kemerovo State Medical University, 650029 Kemerovo, Russia
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4
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Wang L, Zhang S, Huang Y, Zhou Y, Shan T. Conjugated linoleic acids inhibit lipid deposition in subcutaneous adipose tissue and alter lipid profiles in serum of pigs. J Anim Sci 2023; 101:skad294. [PMID: 37646838 PMCID: PMC10629446 DOI: 10.1093/jas/skad294] [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: 06/21/2023] [Accepted: 08/29/2023] [Indexed: 09/01/2023] Open
Abstract
Conjugated linoleic acids (CLAs) have served as a nutritional strategy to reduce fat deposition in adipose tissues of pigs. However, the effects of CLAs on lipid profiles in serum and how these lipid molecules regulate fat deposition are still unclear. In this study, we explored the effects of CLAs on regulating lipid deposition in adipose tissues in terms of lipid molecules and microbiota based on a Heigai pig model. A total of 56 Heigai finishing pigs (body weight: 85.58 ± 10.39 kg) were randomly divided into two treatments and fed diets containing 1% soyabean oil or 1% CLAs for 40 d. CLAs reduced fat deposition and affected fatty acids composition in adipose tissues of Heigai pigs via upregulating the expression of the lipolytic gene (hormone-sensitive lipase, HSL) in vivo and in vitro. CLAs also altered the biochemical immune indexes including reduced content of total cholesterol (TChol), high-density lipoprotein (HDL-C), and low-density lipoprotein (LDL-C) and changed lipids profiles including decreased sphingolipids especially ceramides (Cers) and sphingomyelins (SMs) in serum of Heigai pigs. Mechanically, CLAs may decrease peroxisome proliferator-activated receptorγ (PPARγ) expression and further inhibit adipogenic differentiation in adipose tissues of pigs by suppressing the function of Cers in serum. Furthermore, Pearson's correlation analysis showed HSL expression was positively related to short-chain fatty acids (SCFAs) in the gut (P ≤ 0.05) but the abundance of Cers was negatively related to the production and functions of SCFAs (P ≤ 0.05). CLAs altered the distribution of the lipid in serum and inhibited adipogenic differentiation by suppressing the function of Cers and further decreasing PPARγ expression in adipose tissues of Heigai pigs. Besides, the HSL expression and the abundance of Cers are associated with the production and functions of SCFAs in the gut.
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Affiliation(s)
- Liyi Wang
- Institute of Feed Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
- The Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, College of Animal Sciences, Zhejiang 310058, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Hangzhou, Zhejiang 310058, China
| | - Shu Zhang
- Institute of Feed Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
- The Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, College of Animal Sciences, Zhejiang 310058, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Hangzhou, Zhejiang 310058, China
| | - Yuqin Huang
- Institute of Feed Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
- The Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, College of Animal Sciences, Zhejiang 310058, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Hangzhou, Zhejiang 310058, China
| | - Yanbing Zhou
- Institute of Feed Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
- The Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, College of Animal Sciences, Zhejiang 310058, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Hangzhou, Zhejiang 310058, China
| | - Tizhong Shan
- Institute of Feed Sciences, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
- The Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, College of Animal Sciences, Zhejiang 310058, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Hangzhou, Zhejiang 310058, China
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5
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Contribution of specific ceramides to obesity-associated metabolic diseases. Cell Mol Life Sci 2022; 79:395. [PMID: 35789435 PMCID: PMC9252958 DOI: 10.1007/s00018-022-04401-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/20/2022] [Accepted: 05/26/2022] [Indexed: 12/04/2022]
Abstract
Ceramides are a heterogeneous group of bioactive membrane sphingolipids that play specialized regulatory roles in cellular metabolism depending on their characteristic fatty acyl chain lengths and subcellular distribution. As obesity progresses, certain ceramide molecular species accumulate in metabolic tissues and cause cell-type-specific lipotoxic reactions that disrupt metabolic homeostasis and lead to the development of cardiometabolic diseases. Several mechanisms for ceramide action have been inferred from studies in vitro, but only recently have we begun to better understand the acyl chain length specificity of ceramide-mediated signaling in the context of physiology and disease in vivo. New discoveries show that specific ceramides affect various metabolic pathways and that global or tissue-specific reduction in selected ceramide pools in obese rodents is sufficient to improve metabolic health. Here, we review the tissue-specific regulation and functions of ceramides in obesity, thus highlighting the emerging concept of selectively inhibiting production or action of ceramides with specific acyl chain lengths as novel therapeutic strategies to ameliorate obesity-associated diseases.
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Barchuk M, Ancel P, Miksztowicz V, Doukbi E, Svilar L, Yñón D, Nogueira JP, Rubio M, Schreier L, Dutour A, Martin JC, Gaborit B, Berg G. Epicardial Adipose Tissue Ceramides Are Related to Lipoprotein Lipase Activity in Coronary Artery Disease: Unfolding a Missing Link. Arterioscler Thromb Vasc Biol 2022; 42:e242-e251. [PMID: 35708030 DOI: 10.1161/atvbaha.122.317840] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND Epicardial adipose tissue (EAT) contributes to coronary artery disease (CAD). EAT presents a specific lipidomic signature, showing increased ceramides and other proinflammatory lipids content. Besides, LPL (lipoprotein lipase) activity in EAT would contribute to its expansion, supplying fatty acids to the tissue. Our aim was to evaluate the relations between LPL activity, regulators of LPL, and ceramides in EAT from CAD patients. METHODS We studied patients undergoing coronary bypass graft (CAD, n=25) and patients without CAD (no CAD, n=14). EAT and subcutaneous AT (SAT) were obtained, tissue LPL activity and its regulator's expression (ANGPTL4, GPIHBP1 [glycosylphosphatidylinositol-anchored high-density lipoprotein-binding protein 1], and PPARγ [peroxisomal proliferator-activated receptor γ]) were assessed. Tissue lipidomes were evaluated by UHPLC-MS, in positive and negative ionization modes. RESULTS LPL activity was higher in EAT from CAD (P<0.001), and in EAT than SAT in both groups (P<0.001). ANGPTL4 levels were lower, GPIHBP1 and PPARγ levels were higher in EAT from CAD (P<0.001). In both groups, EAT exhibited more ceramide (P=0.01), directly associated with LPL activity, being the strongest association with Cer18:1/24:1 (P<0.001). EAT Cer18:1/16:0 to Cer18:1/24:0 and Cer18:1/24:1 to 18:1/24:0 ratios were higher in CAD (P=0.03; P<0.001, respectively), the latter directly associated with LPL activity (r=0.63, P<0.001) GPIHBP1 levels (r=0.68, P<0.001), and inversely to EAT ANGPTL4 expression (r=-0.49, P=0.03). Pairwise partial correlation network showed associations among bioactive lipids and LPL and its regulators (P<0.001 in all cases). CONCLUSIONS The association between LPL activity, total ceramide, and the atherogenic ceramide ratios highlights the importance of the enzyme and these bioactive lipids contributing to the different metabolic profile of EAT in CAD.
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Affiliation(s)
- Magalí Barchuk
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., L.S., G.B.)
- Universidad de Buenos Aires, CONICET, Facultad de Farmacia y Bioquímica, Argentina (M.B., V.M., G.B.)
| | - Patricia Ancel
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
| | - Verónica Miksztowicz
- Universidad de Buenos Aires, CONICET, Facultad de Farmacia y Bioquímica, Argentina (M.B., V.M., G.B.)
| | - Elisa Doukbi
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
| | - Ljubica Svilar
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., L.S., G.B.)
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
| | - Daniel Yñón
- Universidad de Buenos Aires, Hospital de Clínicas "José de San Martín", División de Cirugía Cardiovascular, Argentina (D.Y., M.R.)
| | - Juan Patricio Nogueira
- Servicio de Docencia e Investigación, Hospital Central de Formosa, Facultad de Ciencias de la Salud, Universidad Nacional de Formosa, Argentina (J.P.N.)
| | - Miguel Rubio
- Universidad de Buenos Aires, Hospital de Clínicas "José de San Martín", División de Cirugía Cardiovascular, Argentina (D.Y., M.R.)
| | - Laura Schreier
- CRIBIOM, Criblage Biologique Marseille, Faculté de Medecine de la Timone, France (L.S.)
| | - Anne Dutour
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
- Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., B.G.)
| | - Jean Charles Martin
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
| | - Bénédicte Gaborit
- Aix-Marseille University, INSERM, INRAE, C2VN, France (P.A., E.D., L.S., A.D., J.C.M., B.G.)
- Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., B.G.)
| | - Gabriela Berg
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., L.S., G.B.)
- Universidad de Buenos Aires, CONICET, Facultad de Farmacia y Bioquímica, Argentina (M.B., V.M., G.B.)
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Abstract
Interest in epicardial adipose tissue (EAT) is growing rapidly, and research in this area appeals to a broad, multidisciplinary audience. EAT is unique in its anatomy and unobstructed proximity to the heart and has a transcriptome and secretome very different from that of other fat depots. EAT has physiological and pathological properties that vary depending on its location. It can be highly protective for the adjacent myocardium through dynamic brown fat-like thermogenic function and harmful via paracrine or vasocrine secretion of pro-inflammatory and profibrotic cytokines. EAT is a modifiable risk factor that can be assessed with traditional and novel imaging techniques. Coronary and left atrial EAT are involved in the pathogenesis of coronary artery disease and atrial fibrillation, respectively, and it also contributes to the development and progression of heart failure. In addition, EAT might have a role in coronavirus disease 2019 (COVID-19)-related cardiac syndrome. EAT is a reliable potential therapeutic target for drugs with cardiovascular benefits such as glucagon-like peptide 1 receptor agonists and sodium–glucose co-transporter 2 inhibitors. This Review provides a comprehensive and up-to-date overview of the role of EAT in cardiovascular disease and highlights the translational nature of EAT research and its applications in contemporary cardiology. In this Review, Iacobellis provides a comprehensive overview of the role of epicardial adipose tissue (EAT) in cardiovascular disease, including coronary artery disease, heart failure and atrial fibrillation, discusses imaging techniques for EAT assessment and highlights the therapeutic potential of targeting EAT in cardiovascular disease. Epicardial adipose tissue (EAT) has anatomical and functional interactions with the heart owing to the shared circulation and the absence of muscle fascia separating the two organs. EAT can be clinically measured with cardiac imaging techniques that can help to predict and stratify cardiovascular risk. Regional distribution of EAT is important because pericoronary EAT and left atrial EAT differently affect the risk of coronary artery diseases and atrial fibrillation, respectively. EAT has a role in the development of several cardiovascular diseases through complex mechanisms, including gene expression profile, pro-inflammatory and profibrotic proteome, neuromodulation, and glucose and lipid metabolism. EAT could be a potential therapeutic target for novel cardiometabolic medications that modulate adipose tissue such as glucagon-like peptide 1 receptor agonists and sodium–glucose co-transporter 2 inhibitors. EAT might be a reservoir of severe acute respiratory syndrome coronavirus 2 and an amplifier of coronavirus disease 2019 (COVID-19)-related cardiac syndrome.
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Affiliation(s)
- Gianluca Iacobellis
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Miami, Miami, FL, USA.
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Chathoth S, Ismail MH, Alghamdi HM, Zakaria HM, Hassan KA, Alshomimi S, Vatte C, Cyrus C, Alsaif HS, Mostafa A, Shaaban H, Al Ali A. Insulin resistance induced by de novo pathway–generated C16-ceramide is associated with type 2 diabetes in an obese population. Lipids Health Dis 2022; 21:24. [PMID: 35184720 PMCID: PMC8858530 DOI: 10.1186/s12944-022-01634-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 02/07/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Obesity and diabetes are two chronic metabolic diseases whose prevalence is increasing at an alarming rate globally. A close association between obesity, diabetes, and insulin resistance has been identified, and many studies have pinpointed obesity as a causal risk factor for insulin resistance. However, the mechanism underlying this association is not entirely understood. In the past decade, ceramides have gained attention due to their accumulation in certain tissues and their suggested role in initiating insulin resistance. This study aims to determine the association of specific ceramides and their major metabolizing enzymes with obesity-associated insulin resistance.
Methods
The samples comprised subcutaneous adipose tissues collected from three cohorts: lean non-diabetic (controls; n = 20), obese-non-diabetic (n = 66), and obese-diabetic (n = 32). Ceramide levels were quantified using LC-MS/MS and mRNA expression level for different enzymes were estimated using real-time PCR-based RNA expression analysis.
Results
C16-ceramide (P = 0.023), C16-dihydro-ceramide (P < 0.005), C18-dihydro-ceramide (P = 0.009) and C24-ceramide (P = 0.040) levels were significantly increased in the obese cohort compared to the control group. However, stratification of the obese group revealed a significant increase in the C16-ceramide levels (P = 0.027) and mRNA over expression of the serine palmitoyl transferases enzyme subunit SPT1 (P < 0.005) in the obese-diabetic cohort compared to the obese-non-diabetic cohort.
Conclusions
The present study indicates that C16-ceramide plays a pivotal role in inducing insulin resistance. Overexpression of SPT1 in the obese-diabetic group and its positive correlation with C16-ceramide suggest that C16-ceramide was generated through the de novo pathway.
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9
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Razzaque MS. Salivary phosphate as a biomarker for human diseases. FASEB Bioadv 2022; 4:102-108. [PMID: 35141474 PMCID: PMC8814558 DOI: 10.1096/fba.2021-00104] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022] Open
Abstract
Phosphate is a common ingredient of the daily consumed foods and is absorbed in the intestine and is excreted in the urine through the kidney to maintain the homeostatic balance. For adults, the Recommended Dietary Allowance (RDA) for phosphorus is around 700 mg/day. The change in dietary habits resulted in far more phosphate consumption (almost double) than the RDA, contributing to increased cardiovascular diseases, kidney diseases, and tumor formation. Due to a lack of clinical appreciation for the long-term consequences of chronic phosphate burden on non-communicable disorders, it is rapidly becoming a global health concern. The possible association between dysregulated phosphate metabolism and obesity is not studied in-depth, mainly because such an association is believed to be nonexistent. However, in the animal model of obesity, serum phosphate level was higher than their non-obese controls. In a similar observation line, significantly higher salivary phosphate levels were detected in obese children compared to normal-weight children. Of clinical importance, despite the significant increase of salivary phosphate levels in obese children, the plasma phosphate levels did not change in samples collected from the same group of children. Such disparity between plasma and saliva raised the possibility that human salivary phosphate levels may be an early biomarker of childhood obesity.
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Affiliation(s)
- Mohammed S. Razzaque
- Department of PathologyLake Erie College of Osteopathic MedicineEriePennsylvaniaUSA
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10
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Kerr M, Dennis KMJH, Carr CA, Fuller W, Berridge G, Rohling S, Aitken CL, Lopez C, Fischer R, Miller JJ, Clarke K, Tyler DJ, Heather LC. Diabetic mitochondria are resistant to palmitoyl CoA inhibition of respiration, which is detrimental during ischemia. FASEB J 2021; 35:e21765. [PMID: 34318967 PMCID: PMC8662312 DOI: 10.1096/fj.202100394r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/24/2021] [Accepted: 06/14/2021] [Indexed: 01/07/2023]
Abstract
The bioactive lipid intermediate palmitoyl CoA (PCoA) can inhibit mitochondrial ADP/ATP transport, though the physiological relevance of this regulation remains unclear. We questioned whether myocardial ischemia provides a pathological setting in which PCoA regulation of ADP/ATP transport would be beneficial, and secondly, whether the chronically elevated lipid content within the diabetic heart could make mitochondria less sensitive to the effects of PCoA. PCoA acutely decreased ADP‐stimulated state 3 respiration and increased the apparent Km for ADP twofold. The half maximal inhibitory concentration (IC50) of PCoA in control mitochondria was 22 µM. This inhibitory effect of PCoA on respiration was blunted in diabetic mitochondria, with no significant difference in the Km for ADP in the presence of PCoA, and an increase in the IC50 to 32 µM PCoA. The competitive inhibition by PCoA was localised to the phosphorylation apparatus, particularly the ADP/ATP carrier (AAC). During ischemia, the AAC imports ATP into the mitochondria, where it is hydrolysed by reversal of the ATP synthase, regenerating the membrane potential. Addition of PCoA dose‐dependently prevented this wasteful ATP hydrolysis for membrane repolarisation during ischemia, however, this beneficial effect was blunted in diabetic mitochondria. Finally, using 31P‐magnetic resonance spectroscopy we demonstrated that diabetic hearts lose ATP more rapidly during ischemia, with a threefold higher ATP decay rate compared with control hearts. In conclusion, PCoA plays a role in protecting mitochondrial energetics during ischemia, by preventing wasteful ATP hydrolysis. However, this beneficial effect is blunted in diabetes, contributing to the impaired energy metabolism seen during myocardial ischemia in the diabetic heart.
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Affiliation(s)
- M Kerr
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - K M J H Dennis
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - C A Carr
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - W Fuller
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - G Berridge
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - S Rohling
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - C L Aitken
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - C Lopez
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - R Fischer
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - J J Miller
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.,Department of Physics, University of Oxford, Oxford, UK.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - K Clarke
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - D J Tyler
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.,Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - L C Heather
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
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11
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Roszczyc-Owsiejczuk K, Zabielski P. Sphingolipids as a Culprit of Mitochondrial Dysfunction in Insulin Resistance and Type 2 Diabetes. Front Endocrinol (Lausanne) 2021; 12:635175. [PMID: 33815291 PMCID: PMC8013882 DOI: 10.3389/fendo.2021.635175] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 02/01/2021] [Indexed: 12/15/2022] Open
Abstract
Insulin resistance is defined as a complex pathological condition of abnormal cellular and metabolic response to insulin. Obesity and consumption of high-fat diet lead to ectopic accumulation of bioactive lipids in insulin-sensitive tissues. Intracellular lipid accumulation is regarded as one of the major factors in the induction of insulin resistance and type 2 diabetes (T2D). A significant number of studies have described the involvement of ceramides and other sphingolipids in the inhibition of insulin-signaling pathway in both skeletal muscles and the liver. Adverse effects of sphingolipid accumulation have recently been linked to the activation of protein kinase Cζ (PKCζ) and protein phosphatase 2A (PP2A), which, in turn, negatively affect phosphorylation of serine/threonine kinase Akt [also known as protein kinase B (PKB)], leading to decreased glucose uptake in skeletal muscles as well as increased gluconeogenesis and glycogenolysis in the liver. Sphingolipids, in addition to their direct impact on the insulin signaling pathway, may be responsible for other negative aspects of diabetes, namely mitochondrial dysfunction and deficiency. Mitochondrial health, which is characterized by appropriate mitochondrial quantity, oxidative capacity, controlled oxidative stress, undisturbed respiratory chain function, adenosine triphosphate (ATP) production and mitochondrial proliferation through fission and fusion, is impaired in the skeletal muscles and liver of T2D subjects. Recent findings suggest that impaired mitochondrial function may play a key role in the development of insulin resistance. Mitochondria stay in contact with the endoplasmic reticulum (ER), Golgi membranes and mitochondria-associated membranes (MAM) that are the main places of sphingolipid synthesis. Moreover, mitochondria are capable of synthesizing ceramide though ceramide synthase (CerS) activity. Recently, ceramides have been demonstrated to negatively affect mitochondrial respiratory chain function and fission/fusion activity, which is also a hallmark of T2D. Despite a significant correlation between sphingolipids, mitochondrial dysfunction, insulin resistance and T2D, this subject has not received much attention compared to the direct effect of sphingolipids on the insulin signaling pathway. In this review, we focus on the current state of scientific knowledge regarding the involvement of sphingolipids in the induction of insulin resistance by inhibiting mitochondrial function.
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Affiliation(s)
- Kamila Roszczyc-Owsiejczuk
- Department of Medical Biology, Medical University of Bialystok, Bialystok, Poland
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland
| | - Piotr Zabielski
- Department of Medical Biology, Medical University of Bialystok, Bialystok, Poland
- *Correspondence: Piotr Zabielski,
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12
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Juchnicka I, Kuźmicki M, Szamatowicz J. Ceramides and Sphingosino-1-Phosphate in Obesity. Front Endocrinol (Lausanne) 2021; 12:635995. [PMID: 34054722 PMCID: PMC8158155 DOI: 10.3389/fendo.2021.635995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/16/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity is a growing worldwide problem, especially in developed countries. This disease adversely affects the quality of life and notably contributes to the development of type 2 diabetes, metabolic syndrome, and cardiovascular disorders. It is characterised by excessive lipids accumulation in the subcutaneous and visceral adipose tissue. Considering the secretory function of adipose tissue, this leads to impaired adipokines and cytokines release. Changes in adipose tissue metabolism result in chronic inflammation, pancreatic islets dysfunction and peripheral insulin resistance. In addition to saturating various adipocytes, excess lipids are deposited into non-adipose peripheral tissues, which disturbs cell metabolism and causes a harmful effect known as lipotoxicity. Fatty acids are metabolised into bioactive lipids such as ceramides, from which sphingolipids are formed. Ceramides and sphingosine-1-phosphate (S1P) are involved in intracellular signalling, cell proliferation, migration, and apoptosis. Studies demonstrate that bioactive lipids have a crucial role in regulating insulin signalling pathways, glucose homeostasis and β cell death. Data suggests that ceramides may have an opposite cellular effect than S1P; however, the role of S1P remains controversial. This review summarises the available data on ceramide and sphingolipid metabolism and their role in obesity.
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13
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Tomášová P, Čermáková M, Pelantová H, Vecka M, Kratochvílová H, Lipš M, Lindner J, Ivák P, Netuka I, Šedivá B, Haluzík M, Kuzma M. Lipid Profiling in Epicardial and Subcutaneous Adipose Tissue of Patients with Coronary Artery Disease. J Proteome Res 2020; 19:3993-4003. [DOI: 10.1021/acs.jproteome.0c00269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Martina Čermáková
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Vecka
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Helena Kratochvílová
- Institute of Medical Biochemistry and Laboratory Diagnostics; First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Michal Lipš
- Department of Anaesthesiology, Resuscitation and Intensive Care, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Jaroslav Lindner
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | | | | | - Blanka Šedivá
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics; First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
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14
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Obesity, Bioactive Lipids, and Adipose Tissue Inflammation in Insulin Resistance. Nutrients 2020; 12:nu12051305. [PMID: 32375231 PMCID: PMC7284998 DOI: 10.3390/nu12051305] [Citation(s) in RCA: 194] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022] Open
Abstract
Obesity is a major risk factor for the development of insulin resistance and type 2 diabetes. The exact mechanism by which adipose tissue induces insulin resistance is still unclear. It has been demonstrated that obesity is associated with the adipocyte dysfunction, macrophage infiltration, and low-grade inflammation, which probably contributes to the induction of insulin resistance. Adipose tissue synthesizes and secretes numerous bioactive molecules, namely adipokines and cytokines, which affect the metabolism of both lipids and glucose. Disorders in the synthesis of adipokines and cytokines that occur in obesity lead to changes in lipid and carbohydrates metabolism and, as a consequence, may lead to insulin resistance and type 2 diabetes. Obesity is also associated with the accumulation of lipids. A special group of lipids that are able to regulate the activity of intracellular enzymes are biologically active lipids: long-chain acyl-CoAs, ceramides, and diacylglycerols. According to the latest data, the accumulation of these lipids in adipocytes is probably related to the development of insulin resistance. Recent studies indicate that the accumulation of biologically active lipids in adipose tissue may regulate the synthesis/secretion of adipokines and proinflammatory cytokines. Although studies have revealed that inflammation caused by excessive fat accumulation and abnormalities in lipid metabolism can contribute to the development of obesity-related insulin resistance, further research is needed to determine the exact mechanism by which obesity-related insulin resistance is induced.
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15
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Barchuk M, Dutour A, Ancel P, Svilar L, Miksztowicz V, Lopez G, Rubio M, Schreier L, Nogueira JP, Valéro R, Béliard S, Martin JC, Berg G, Gaborit B. Untargeted Lipidomics Reveals a Specific Enrichment in Plasmalogens in Epicardial Adipose Tissue and a Specific Signature in Coronary Artery Disease. Arterioscler Thromb Vasc Biol 2020; 40:986-1000. [PMID: 32102570 DOI: 10.1161/atvbaha.120.313955] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Epicardial adipose tissue (EAT) is an active endocrine organ that could contribute to the pathophysiology of coronary artery disease (CAD) through the paracrine release of proatherogenic mediators. Numerous works have analyzed the inflammatory signature of EAT, but scarce informations on its lipidome are available. Our objective was first to study the differences between EAT and subcutaneous adipose tissue (SAT) lipidomes and second to identify the specific untargeted lipidomic signatures of EAT and SAT in CAD. Approach and Results: Subcutaneous and EAT untargeted lipidomic analysis was performed in 25 patients with CAD and 14 patients without CAD and compared with paired plasma lipidomic analysis of isolated VLDL (very low-density lipoprotein) and HDL (high-density lipoprotein). Lipidomics was performed on a C18 column hyphenated to a Q-Exactive plus mass spectrometer, using both positive and negative ionization mode. EAT and SAT had independent lipidomic profile, with 95 lipid species differentially expressed and phosphatidylethanolamine 18:1p/22:6 twenty-fold more expressed in EAT compared with SAT false discovery rate =3×10-4). Patients with CAD exhibited more ceramides (P=0.01), diglycerides (P=0.004; saturated and nonsaturated), monoglycerides (P=0.013) in their EAT than patients without CAD. Conversely, they had lesser unsaturated TG (triglycerides; P=0.02). No difference was observed in the 295 lipid species found in SAT between patients with and without CAD. Fifty-one lipid species were found in common between EAT and plasma lipoproteins. TG 18:0/18:0/18:1 was found positively correlated (r=0.45, P=0.019) in EAT and HDL and in EAT and VLDL (r=0.46, P=0.02). CONCLUSIONS CAD is associated with specific lipidomic signature of EAT, unlike SAT. Plasma lipoprotein lipidome only partially reflected EAT lipidome.
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Affiliation(s)
- Magali Barchuk
- From the Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., V.M., G.L., L.S., G.B.)
| | - Anne Dutour
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.).,Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., R.V., S.B., B.G.)
| | - Patricia Ancel
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.)
| | - Ljubica Svilar
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.).,CRIBIOM, Criblage Biologique Marseille, Faculté de Medecine de la Timone, France (L.S.)
| | - Veronica Miksztowicz
- From the Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., V.M., G.L., L.S., G.B.).,Universidad de Buenos Aires, CONICET, Facultad de Farmacia y Bioquímica, Argentina (V.M., G.B.)
| | - Graciela Lopez
- From the Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., V.M., G.L., L.S., G.B.)
| | - Miguel Rubio
- Universidad de Buenos Aires, Hospital de Clínicas "José de San Martín", División de Cirugía Cardiovascular, Argentina (M.R.)
| | - Laura Schreier
- From the Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., V.M., G.L., L.S., G.B.)
| | - Juan Patricio Nogueira
- Servicio de Docencia e Investigación, Hospital Central de Formosa, Facultad de Ciencias de la Salud, Universidad Nacional de Formosa, Argentina (J.P.N.)
| | - René Valéro
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.).,Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., R.V., S.B., B.G.)
| | - Sophie Béliard
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.).,Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., R.V., S.B., B.G.)
| | - Jean Charles Martin
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.)
| | - Gabriela Berg
- From the Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina (M.B., V.M., G.L., L.S., G.B.).,Universidad de Buenos Aires, CONICET, Facultad de Farmacia y Bioquímica, Argentina (V.M., G.B.)
| | - Bénédicte Gaborit
- Aix-Marseille University, INSERM, INRAE, C2VN, France (A.D., P.A., L.S., R.V., S.B., J.C.M., B.G.).,Endocrinology, Metabolic Diseases and Nutrition Department, Assistance Publique Hôpitaux de Marseille, France (A.D., R.V., S.B., B.G.)
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16
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de Andrade PAM, Giovani PA, Araujo DS, de Souza AJ, Pedroni-Pereira A, Kantovitz KR, Andreote FD, Castelo PM, Nociti-Jr FH. Shifts in the bacterial community of saliva give insights on the relationship between obesity and oral microbiota in adolescents. Arch Microbiol 2020; 202:1085-1095. [PMID: 32034425 DOI: 10.1007/s00203-020-01817-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 01/19/2020] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
The current study aimed at the determination of the impact of obesity on the salivary microbiome in adolescents. Sixty subjects ranging 14-17 years old were enrolled (obese: n = 30-50% females, and normal weight: n = 30-50% females). Stimulated saliva was collected for denaturing gradient gel electrophoresis (DGGE) band patterns and massive 16S rRNA gene sequencing using the Ion Torrent platform. Overall, data analysis revealed that male subjects harbored a higher diverse salivary microbiome, defined by a significant higher richness (32.48 versus 26.74) and diversity (3.36 versus 3.20), higher Simpson values (0.96 versus 0.95) and distinct bacterial community structure considering either sex or condition (p < 0.05). Bacterial community fingerprinting analysis in human saliva showed a positive correlation with increased body mass index (BMI) in adolescents. Veillonella, Haemophilus and Prevotella occurrence was found to be affected by BMI, whereas Neisseria and Rothia occurrence was significantly impacted by sex in obese subjects. Our findings suggest that male and female adolescents may harbor a naturally distinct salivary microbiota and that obesity may specifically have an impact on their oral bacterial community. The potential dysbiotic oral microbiome in obese adolescents raises new insights on the etiology and prevention of future conditions in these populations.
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Affiliation(s)
- Pedro Avelino Maia de Andrade
- Department of Soil Science, College of Agriculture "Luiz de Queiroz", University of São Paulo (Esalq-USP), Piracicaba, São Paulo, Brazil. .,Department of Genetics, College of Agriculture "Luiz de Queiroz", University of São Paulo (Esalq-USP), Piracicaba, São Paulo, Brazil.
| | - Priscila Alves Giovani
- Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Darlle Santos Araujo
- Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Adijailton José de Souza
- Department of Soil Science, College of Agriculture "Luiz de Queiroz", University of São Paulo (Esalq-USP), Piracicaba, São Paulo, Brazil
| | - Aline Pedroni-Pereira
- Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Kamila Rosamilia Kantovitz
- Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.,Department of Dental Materials, São Leopoldo Mandic Research Center, Campinas, São Paulo, Brazil
| | - Fernando Dini Andreote
- Department of Soil Science, College of Agriculture "Luiz de Queiroz", University of São Paulo (Esalq-USP), Piracicaba, São Paulo, Brazil
| | - Paula Midori Castelo
- Department of Biological Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Francisco Humberto Nociti-Jr
- Division of Periodontics, Department of Prosthodontics and Periodontics, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
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17
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18
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Xu Z, You W, Zhou Y, Chen W, Wang Y, Shan T. Cold-induced lipid dynamics and transcriptional programs in white adipose tissue. BMC Biol 2019; 17:74. [PMID: 31530289 PMCID: PMC6749700 DOI: 10.1186/s12915-019-0693-x] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/27/2019] [Indexed: 12/14/2022] Open
Abstract
Background In mammals, cold exposure induces browning of white adipose tissue (WAT) and alters WAT gene expression and lipid metabolism to boost adaptive thermogenesis and maintain body temperature. Understanding the lipidomic and transcriptomic profiles of WAT upon cold exposure provides insights into the adaptive changes associated with this process. Results Here, we applied mass spectrometry and RNA sequencing (RNA-seq) to provide a comprehensive resource for describing the lipidomic or transcriptome profiles in cold-induced inguinal WAT (iWAT). We showed that short-term (3-day) cold exposure induces browning of iWAT, increases energy expenditure, and results in loss of body weight and fat mass. Lipidomic analysis shows that short-term cold exposure leads to dramatic changes of the overall composition of lipid classes WAT. Notably, cold exposure induces significant changes in the acyl-chain composition of triacylglycerols (TAGs), as well as the levels of glycerophospholipids and sphingolipids in iWAT. RNA-seq and qPCR analysis suggests that short-term cold exposure alters the expression of genes and pathways involved in fatty acid elongation, and the synthesis of TAGs, sphingolipids, and glycerophospholipids. Furthermore, the cold-induced lipid dynamics and gene expression pathways in iWAT are contrary to those previously observed in metabolic syndrome, neurodegenerative disorders, and aging, suggesting beneficial effects of cold-induced WAT browning on health and lifespan. Conclusion We described the significant alterations in the composition of glyphospholipids, glycerolipids, and sphingolipids and expression of genes involved in thermogenesis, fatty acid elongation, and fatty acid metabolism during the response of iWAT to short-term cold exposure. We also found that some changes in the levels of specific lipid species happening after cold treatment of iWAT are negatively correlated to metabolic diseases, including obesity and T2D. Electronic supplementary material The online version of this article (10.1186/s12915-019-0693-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ziye Xu
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Wenjing You
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Yanbing Zhou
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Wentao Chen
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Yizhen Wang
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. .,The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.
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19
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Chacińska M, Zabielski P, Książek M, Szałaj P, Jarząbek K, Kojta I, Chabowski A, Błachnio-Zabielska AU. The Impact of OMEGA-3 Fatty Acids Supplementation on Insulin Resistance and Content of Adipocytokines and Biologically Active Lipids in Adipose Tissue of High-Fat Diet Fed Rats. Nutrients 2019; 11:nu11040835. [PMID: 31013835 PMCID: PMC6520951 DOI: 10.3390/nu11040835] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/08/2019] [Accepted: 04/10/2019] [Indexed: 12/22/2022] Open
Abstract
It has been established that OMEGA-3 polyunsaturated fatty acids (PUFAs) may improve lipid and glucose homeostasis and prevent the "low-grade" state of inflammation in animals. Little is known about the effect of PUFAs on adipocytokines expression and biologically active lipids accumulation under the influence of high-fat diet-induced obesity. The aim of the study was to examine the effect of fish oil supplementation on adipocytokines expression and ceramide (Cer) and diacylglycerols (DAG) content in visceral and subcutaneous adipose tissue of high-fat fed animals. The experiments were carried out on Wistar rats divided into three groups: standard diet-control (SD), high-fat diet (HFD), and high-fat diet + fish oil (HFD+FO). The fasting plasma glucose and insulin concentrations were examined. Expression of carnitine palmitoyltransferase 1 (CPT1) protein was determined using the Western blot method. Plasma adipocytokines concentration was measured using ELISA kits and mRNA expression was determined by qRT-PCR reaction. Cer, DAG, and acyl-carnitine (A-CAR) content was analyzed by UHPLC/MS/MS. The fish oil supplementation significantly decreased plasma insulin concentration and Homeostatic Model Assesment for Insulin Resistance (HOMA-IR) index and reduced content of adipose tissue biologically active lipids in comparison with HFD-fed subjects. The expression of CPT1 protein in HFD+FO in both adipose tissues was elevated, whereas the content of A-CAR was lower in both HFD groups. There was an increase of adiponectin concentration and expression in HFD+FO as compared to HFD group. OMEGA-3 fatty acids supplementation improved insulin sensitivity and decreased content of Cer and DAG in both fat depots. Our results also demonstrate that PUFAs may prevent the development of insulin resistance in response to high-fat feeding and may regulate the expression and secretion of adipocytokines in this animal model.
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Affiliation(s)
- Marta Chacińska
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
| | - Piotr Zabielski
- Department of Medical Biology, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
| | - Monika Książek
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
| | - Przemysław Szałaj
- Centre for Bioinformatics and Data Analysis, Medical University of Bialystok, Jana Kilińskiego 1, 15-089 Bialystok, Poland.
- BioStat, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium.
- Centre of New Technologies, University of Warsaw, Stefana Banacha 2C, 02-097 Warsaw, Poland.
| | - Katarzyna Jarząbek
- Department of Reproduction and Gynaecological Endocrinology, Medical University of Bialystok, M. Skłodowskiej-Curie 24A, 15-089 Bialystok, Poland.
| | - Iwona Kojta
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
| | - Agnieszka Urszula Błachnio-Zabielska
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland.
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Hu SJ, Jiang SS, Zhang J, Luo D, Yu B, Yang LY, Zhong HH, Yang MW, Liu LY, Hong FF, Yang SL. Effects of apoptosis on liver aging. World J Clin Cases 2019; 7:691-704. [PMID: 30968034 PMCID: PMC6448073 DOI: 10.12998/wjcc.v7.i6.691] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/10/2019] [Accepted: 01/26/2019] [Indexed: 02/05/2023] Open
Abstract
As an irreversible and perennial process, aging is accompanied by functional and morphological declines in organs. Generally, aging liver exhibits a decline in volume and hepatic blood flow. Even with a preeminent regenerative capacity to restore its functions after liver cell loss, its biosynthesis and metabolism abilities decline, and these are difficult to restore to previous standards. Apoptosis is a programmed death process via intrinsic and extrinsic pathways, in which Bcl-2 family proteins and apoptosis-related genes, such as p21 and p53, are involved. Apoptosis inflicts both favorable and adverse influences on liver aging. Apoptosis eliminates transformed abnormal cells but promotes age-related liver diseases, such as nonalcoholic fatty liver disease, liver fibrosis, cirrhosis, and liver cancer. We summarize the roles of apoptosis in liver aging and age-related liver diseases.
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Affiliation(s)
- Shao-Jie Hu
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Sha-Sha Jiang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Jin Zhang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Dan Luo
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Bo Yu
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Liang-Yan Yang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Hua-Hua Zhong
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Mei-Wen Yang
- Department of Nurse, Nanchang University Hospital, Nanchang 330006, Jiangxi Province, China
| | - Li-Yu Liu
- Department of Nurse, Nanchang University Hospital, Nanchang 330006, Jiangxi Province, China
| | - Fen-Fang Hong
- Experimental Teaching Center, Nanchang University, Nanchang 330031, Jiangxi Province, China
| | - Shu-Long Yang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, Jiangxi Province, China
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21
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Tomášová P, Čermáková M, Pelantová H, Vecka M, Kratochvílová H, Lipš M, Lindner J, Šedivá B, Haluzík M, Kuzma M. Minor lipids profiling in subcutaneous and epicardial fat tissue using LC/MS with an optimized preanalytical phase. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1113:50-59. [PMID: 30897405 DOI: 10.1016/j.jchromb.2019.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 12/25/2022]
Abstract
Analysis of bioactive lipids in adipose tissue could lead to better understanding of the pathogenesis of obesity and its complications. However, current MS methods are limited by a high content of triacylglycerols (TAGs), which markedly surpasses the amount of other lipids and suppresses their ionization. The aim of our study was thus to optimize the preanalytical phase of lipid analysis in adipose tissue, focusing in particular on less-abundant lipids. Next, the optimized method was used to describe the differences between epicardial and subcutaneous adipose tissues obtained from patients undergoing cardiac surgery. Lipids were extracted using a modified Folch method with subsequent detachment of TAGs by thin layer chromatography (TLC). The extracts with/without TAGs were analyzed by tandem LC/MS. The repeatability of the presented method expressed by the median of the coefficients of variation was 12/5% for analysis with/without TAGs separation, respectively. The difference in the relative abundance of TAGs gained with/without TLC was, on average, 19% and did not reach significance (p value > 0.05) for any identified TAG. The novel preanalytical step allowed us to detect 37 lipids, which could not have been detected without TAG separation, because their signal to noise ratio is <5 in current methods of untargeted lipidomics. These lipids belong predominately to ceramides, glycerophosphatidylserines, glycerophosphatidylinsitols, sphingomyelins, glycerophosphatidylcholines, glycerophosphatidylethanolamines, diacylglycerols. The two adipose tissue depots differed mainly in the following lipid classes: glycerophosphatidylcholines, glycerophosphatidylinositols, glycerophosphatidylethanolamine, and sphingomyelins. Moreover, other major lipids showed distinctly different distributions between the two adipose tissues. Among these, the changes in TAGs were the most striking, which correspond to previously published data describing the differences between omental and subcutaneous adipose tissue. Implementation of the TLC step for the elimination of TAGs was crucial for enhancing the MS detection limit of minor lipids in adipose tissue. The differences between the overall lipid profiles of subcutaneous and epicardial tissue reflect their different functions arising from their location.
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Affiliation(s)
- Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic; 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Martina Čermáková
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic; Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Vecka
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Helena Kratochvílová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08, Prague 2, Czech Republic; Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague 4, Czech Republic
| | - Michal Lipš
- Department of Anaesthesiology, Resuscitation and Intensive Care, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Jaroslav Lindner
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Blanka Šedivá
- Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic; Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08, Prague 2, Czech Republic; Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic.
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22
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Choromańska B, Myśliwiec P, Razak Hady H, Dadan J, Myśliwiec H, Chabowski A, Mikłosz A. Metabolic Syndrome is Associated with Ceramide Accumulation in Visceral Adipose Tissue of Women with Morbid Obesity. Obesity (Silver Spring) 2019; 27:444-453. [PMID: 30724038 PMCID: PMC6590193 DOI: 10.1002/oby.22405] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/26/2018] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Accelerated transmembrane transport of long-chain fatty acids dependent on fatty acid transporters is responsible for lipid accumulation and, eventually, the development of metabolic syndrome. This study determined the content of lipids (ceramide [CER], diacylglycerol [DAG], triacylglycerol, and free fatty acid [FFA]) and the expression of fatty acid translocase (FAT/CD36) and plasma membrane fatty acid-binding protein in visceral adipose tissue (VAT) and subcutaneous adipose tissue of women with morbid obesity without metabolic syndrome (MetSx-) or with metabolic syndrome (MetSx+) and compared the results with those of lean controls without metabolic syndrome. METHODS Lipid content and fatty acid composition in each lipid subclass were estimated by gas liquid chromatography. For total, plasma membrane, and mitochondrial expression of fatty acid transporters, subfractionation with subsequent Western blot technique was used. RESULTS A greater content of triacylglycerol in VAT of participants with obesity (MetSx-) was found. However, only the MetSx+ subjects had increased content of CER in VAT in relation to subcutaneous adipose tissue in MetSx+ and lean individuals. This was accompanied by increased total and membrane expression of FAT/CD36 in VAT in MetSx+ subjects. Accordingly, mitochondrial expression of FAT/CD36 and plasma membrane fatty acid-binding protein was decreased in both groups of subjects with obesity. CONCLUSIONS Metabolic syndrome is associated with the accumulation of CER in VAT, possibly related to increased FAT/CD36 protein expression.
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Affiliation(s)
- Barbara Choromańska
- Department of General and Endocrinological SurgeryMedical University of BiałystokBiałystokPoland
| | - Piotr Myśliwiec
- Department of General and Endocrinological SurgeryMedical University of BiałystokBiałystokPoland
| | - Hady Razak Hady
- Department of General and Endocrinological SurgeryMedical University of BiałystokBiałystokPoland
| | - Jacek Dadan
- Department of General and Endocrinological SurgeryMedical University of BiałystokBiałystokPoland
| | - Hanna Myśliwiec
- Department of Dermatology and VenereologyMedical University of BiałystokBiałystokPoland
| | - Adrian Chabowski
- Department of PhysiologyMedical University of BiałystokBiałystokPoland
| | - Agnieszka Mikłosz
- Department of PhysiologyMedical University of BiałystokBiałystokPoland
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23
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Grycel S, Markowski AR, Hady HR, Zabielski P, Kojta I, Imierska M, Górski J, Blachnio-Zabielska AU. Metformin treatment affects adipocytokine secretion and lipid composition in adipose tissues of diet-induced insulin-resistant rats. Nutrition 2019; 63-64:126-133. [PMID: 30959381 DOI: 10.1016/j.nut.2019.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/09/2019] [Accepted: 01/25/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Adipose tissue plays a central role in the pathogenesis of insulin resistance (IR) and type 2 diabetes. However, the molecular changes that promote these diseases are not completely understood. Several studies demonstrated that ceramide (Cer) and diacylglycerol (DAG) accumulation in muscle is associated with IR. The aim of this study was to explain whether a high-fat diet (HFD) leads to bioactive lipid accumulation in adipose tissue and how metformin affects the lipid content in adipocytes and the concentration of plasma adipocytokines. METHODS The experiments were conducted on male Wistar rats divided into three groups: control, HFD-fed, and HFD-fed and treated with metformin. Cer and DAGs were analyzed by liquid chromatography tandem mass spectrometry. Phosphorylation of hormone-sensitive lipase (HSL) was analyzed by Western blot. Oral glucose tolerance and insulin tolerance tests were also performed. Plasma adiponectin and tumor necrosis factor (TNF)-α concentration were measured by enzyme-linked immunosorbent assay. RESULTS HFD induced IR and elevated DAGs and Cer content in subcutaneous and visceral adipose tissues, which was accompanied by an increased phosphorylation of HSL. Metformin improved insulin sensitivity, decreased Cer and DAG levels, and attenuated the phosphorylation of HSL in both fat depots. Furthermore, we observed a strong correlation between adiponectin (negative) and TNF-α (positive) and bioactive lipids in both fat tissues. CONCLUSIONS These results indicated that bioactive lipids accumulation in adipose tissue influences the induction of IR and, at least in part, answered the question of what the insulin-sensitizing effect of metformin at the level of adipose tissue is.
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Affiliation(s)
| | - Adam R Markowski
- Department of Internal Medicine and Gastroenterology, Polish Red Cross Memorial Municipal Hospital, Bialystok, Poland
| | - Hady Razak Hady
- 1st Department of General Surgery and Endocrinology, Medical University Bialystok, Bialystok, Poland
| | - Piotr Zabielski
- Department of Medical Biology, Medical University of Bialystok, Bialystok, Poland; Department of Physiology, Medical University of Bialystok, Bialystok, Poland
| | - Iwona Kojta
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland
| | - Monika Imierska
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland
| | - Jan Górski
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland; Department of Basic Sciences, Faculty of Health Sciences, Lomza State University of Applied Sciences, Lomza, Poland
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24
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Berg G, Miksztowicz V, Morales C, Barchuk M. Epicardial Adipose Tissue in Cardiovascular Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1127:131-143. [DOI: 10.1007/978-3-030-11488-6_9] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Roa I, Del Sol M. Obesity, salivary glands and oral pathology. COLOMBIA MEDICA (CALI, COLOMBIA) 2018; 49:280-287. [PMID: 30700921 PMCID: PMC6342082 DOI: 10.25100/cm.v49i3.3919] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Obesity has reached pandemic proportions in recent years. Not only adults suffer from the disease, but increasingly children and young people. One of the main causes of overweight and obesity is excessive food intake, in particular heavily processed carbohydrates. Obesity alters multiple organs, including the salivary glands, bringing functional alterations with it. Among researchers, the relation between obesity and tooth decay, periodontal disease and xerostomia is being debated. More and more scientific reports are drawing attention to the changes in the microflora of the oral cavity during obesity. All changes are closely related to the morphological and functional alterations of the salivary glands. This article review presents the current points of view regarding the impact of obesity on the health of the salivary glands, and how changes their functions influence other structures in the oral cavity.
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Affiliation(s)
- Ignacio Roa
- Universidad de Talca Facultad de Ciencias de la Salud, Departamento de Ciencias Básicas Biomédicas. Talca, Chile.,Universidad de La Frontera, Facultad de Medicina, Programa Doctorado en Ciencias Morfológicas. Temuco, Chile
| | - Mariano Del Sol
- Universidad de La Frontera, Facultad de Medicina, Centro de Excelencia en Estudios Morfológicos y Quirúrgicos (CEMyQ). Temuco, Chile
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26
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Burhans MS, Hagman DK, Kuzma JN, Schmidt KA, Kratz M. Contribution of Adipose Tissue Inflammation to the Development of Type 2 Diabetes Mellitus. Compr Physiol 2018; 9:1-58. [PMID: 30549014 DOI: 10.1002/cphy.c170040] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The objective of this comprehensive review is to summarize and discuss the available evidence of how adipose tissue inflammation affects insulin sensitivity and glucose tolerance. Low-grade, chronic adipose tissue inflammation is characterized by infiltration of macrophages and other immune cell populations into adipose tissue, and a shift toward more proinflammatory subtypes of leukocytes. The infiltration of proinflammatory cells in adipose tissue is associated with an increased production of key chemokines such as C-C motif chemokine ligand 2, proinflammatory cytokines including tumor necrosis factor α and interleukins 1β and 6 as well as reduced expression of the key insulin-sensitizing adipokine, adiponectin. In both rodent models and humans, adipose tissue inflammation is consistently associated with excess fat mass and insulin resistance. In humans, associations with insulin resistance are stronger and more consistent for inflammation in visceral as opposed to subcutaneous fat. Further, genetic alterations in mouse models of obesity that reduce adipose tissue inflammation are-almost without exception-associated with improved insulin sensitivity. However, a dissociation between adipose tissue inflammation and insulin resistance can be observed in very few rodent models of obesity as well as in humans following bariatric surgery- or low-calorie-diet-induced weight loss, illustrating that the etiology of insulin resistance is multifactorial. Taken together, adipose tissue inflammation is a key factor in the development of insulin resistance and type 2 diabetes in obesity, along with other factors that likely include inflammation and fat accumulation in other metabolically active tissues. © 2019 American Physiological Society. Compr Physiol 9:1-58, 2019.
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Affiliation(s)
- Maggie S Burhans
- Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Derek K Hagman
- Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Jessica N Kuzma
- Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Kelsey A Schmidt
- Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Mario Kratz
- Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Epidemiology, University of Washington, Seattle, Washington, USA.,Department of Medicine, University of Washington, Seattle, Washington, USA
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27
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Blachnio-Zabielska AU, Hady HR, Markowski AR, Kurianiuk A, Karwowska A, Górski J, Zabielski P. Inhibition of Ceramide De Novo Synthesis Affects Adipocytokine Secretion and Improves Systemic and Adipose Tissue Insulin Sensitivity. Int J Mol Sci 2018; 19:ijms19123995. [PMID: 30545025 PMCID: PMC6321500 DOI: 10.3390/ijms19123995] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 12/18/2022] Open
Abstract
Ceramide accumulation in muscle and in liver is implicated in the induction of insulin resistance. Much less in known about the role of ceramide in adipose tissue. The aim of the present study was to elucidate the role of ceramide in adipose tissue and to clarify whether lipids participate in the regulation of adipocytokine secretion. The experiments were performed on male Wistar rats divided into three groups: 1. Control, 2. fed high fat diet (HFD), and 3. fed HFD and treated with myriocin. Ceramide (Cer) and diacylglycerol (DAG) content were analyzed by LC/MS/MS. Hormone sensitive lipase (HSL) phosphorylation was analyzed by Western Blot. Plasma adiponectin and tumor necrosis factor alpha (TNF-α) concentration were measured by enzyme-linked immunosorbent assay. An oral glucose tolerance test (OGTT) and insulin tolerance test (ITT) was also performed. In HFD group, total DAG and Cer content was elevated in both subcutaneous and visceral adipose tissue, which was accompanied by increased glucose, insulin, and HOMA-IR value. Myriocin treatment restored HOMA-IR as well as glucose and insulin concentration to control values. Moreover, myriocin decreased not only Cer, but also DAG levels in both fat depots. Furthermore, we observed a strong correlation between adiponectin (negative) and TNF-α (positive) and Cer in both fat tissues, which suggests that Cer is involved in the regulation of adipocytokine secretion.
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Affiliation(s)
- Agnieszka U Blachnio-Zabielska
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland.
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
| | - Hady Razak Hady
- 1st Department of General Surgery and Endocrinology, Medical University Bialystok, Bialystok, Poland.
| | - Adam R Markowski
- Department of Internal Medicine and Gastroenterology, Polish Red Cross Memorial Municipal Hospital, Bialystok, Poland.
| | - Adam Kurianiuk
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland.
| | - Alicja Karwowska
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland.
| | - Jan Górski
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
- Department of Basic Sciences, Faculty of Health Sciences, Lomza State University of Applied Sciences, 18-400 Lomza, Poland.
| | - Piotr Zabielski
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
- Department of Medical Biology, Medical University of Bialystok, Bialystok, Poland.
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28
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Neeland IJ, Singh S, McGuire DK, Vega GL, Roddy T, Reilly DF, Castro-Perez J, Kozlitina J, Scherer PE. Relation of plasma ceramides to visceral adiposity, insulin resistance and the development of type 2 diabetes mellitus: the Dallas Heart Study. Diabetologia 2018; 61:2570-2579. [PMID: 30159588 PMCID: PMC6219923 DOI: 10.1007/s00125-018-4720-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/20/2018] [Indexed: 12/20/2022]
Abstract
AIMS/HYPOTHESIS Ceramides are sphingolipids that contribute to insulin resistance in preclinical studies. We hypothesised that plasma ceramides would be associated with body fat distribution, insulin resistance and incident type 2 diabetes in a multi-ethnic cohort. METHODS A total of 1557 participants in the Dallas Heart Study without type 2 diabetes underwent measurements of metabolic biomarkers, fat depots by MRI and plasma ceramides by liquid chromatography-mass spectrometry. Diabetes outcomes were assessed after 7 years. Associations of body fat and insulin resistance with ceramides at baseline and of ceramides with incident diabetes outcomes were analysed. RESULTS The cohort had a mean age of 43 years, with 58% women, 45% black participants and a mean BMI of 28 kg/m2. Total cholesterol levels were associated with all ceramides, but higher triacylglycerols and lower HDL-cholesterol and adiponectin were associated only with saturated fatty acid chain ceramides (p < 0.0003). After adjusting for clinical characteristics and total body fat, visceral adipose tissue was positively associated with saturated fatty acid ceramides (per SD, β = 0.16 to 0.18) and inversely associated with polyunsaturated fatty acid ceramides (β = -0.14 to -0.16, p < 0.001 for all). Lower-body subcutaneous fat showed an opposite pattern to that for visceral fat. HOMA-IR was positively associated with saturated (β = 0.08 to 0.09, p < 0.001) and inversely with polyunsaturated ceramides (β = -0.06 to -0.07, p < 0.05). Ceramides were not associated with incident type 2 diabetes after adjustment for clinical factors. CONCLUSIONS/INTERPRETATION Plasma ceramides demonstrate a biologically complex relationship with metabolic and imaging indicators of dysfunctional adiposity. The role of ceramides in a shared pathway of metabolic dysfunction linking visceral adiposity and insulin resistance requires further investigation.
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Affiliation(s)
- Ian J Neeland
- Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8830, USA.
| | - Shruti Singh
- Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8830, USA
| | - Darren K McGuire
- Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8830, USA
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Gloria L Vega
- Department of Clinical Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Dallas VA North Texas Health Care System, Dallas, TX, USA
| | - Thomas Roddy
- Agios Pharmaceuticals, Cambridge, MA, USA
- Cardiometabolic Disease, Merck & Co., Inc., Kenilworth, NJ, USA
| | | | - Jose Castro-Perez
- Cardiometabolic Disease, Merck & Co., Inc., Kenilworth, NJ, USA
- Waters Corporation, Milford, MA, USA
| | - Julia Kozlitina
- McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Philipp E Scherer
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
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29
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Petersen MC, Shulman GI. Mechanisms of Insulin Action and Insulin Resistance. Physiol Rev 2018; 98:2133-2223. [PMID: 30067154 PMCID: PMC6170977 DOI: 10.1152/physrev.00063.2017] [Citation(s) in RCA: 1412] [Impact Index Per Article: 235.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/22/2018] [Accepted: 03/24/2018] [Indexed: 12/15/2022] Open
Abstract
The 1921 discovery of insulin was a Big Bang from which a vast and expanding universe of research into insulin action and resistance has issued. In the intervening century, some discoveries have matured, coalescing into solid and fertile ground for clinical application; others remain incompletely investigated and scientifically controversial. Here, we attempt to synthesize this work to guide further mechanistic investigation and to inform the development of novel therapies for type 2 diabetes (T2D). The rational development of such therapies necessitates detailed knowledge of one of the key pathophysiological processes involved in T2D: insulin resistance. Understanding insulin resistance, in turn, requires knowledge of normal insulin action. In this review, both the physiology of insulin action and the pathophysiology of insulin resistance are described, focusing on three key insulin target tissues: skeletal muscle, liver, and white adipose tissue. We aim to develop an integrated physiological perspective, placing the intricate signaling effectors that carry out the cell-autonomous response to insulin in the context of the tissue-specific functions that generate the coordinated organismal response. First, in section II, the effectors and effects of direct, cell-autonomous insulin action in muscle, liver, and white adipose tissue are reviewed, beginning at the insulin receptor and working downstream. Section III considers the critical and underappreciated role of tissue crosstalk in whole body insulin action, especially the essential interaction between adipose lipolysis and hepatic gluconeogenesis. The pathophysiology of insulin resistance is then described in section IV. Special attention is given to which signaling pathways and functions become insulin resistant in the setting of chronic overnutrition, and an alternative explanation for the phenomenon of ‟selective hepatic insulin resistanceˮ is presented. Sections V, VI, and VII critically examine the evidence for and against several putative mediators of insulin resistance. Section V reviews work linking the bioactive lipids diacylglycerol, ceramide, and acylcarnitine to insulin resistance; section VI considers the impact of nutrient stresses in the endoplasmic reticulum and mitochondria on insulin resistance; and section VII discusses non-cell autonomous factors proposed to induce insulin resistance, including inflammatory mediators, branched-chain amino acids, adipokines, and hepatokines. Finally, in section VIII, we propose an integrated model of insulin resistance that links these mediators to final common pathways of metabolite-driven gluconeogenesis and ectopic lipid accumulation.
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Affiliation(s)
- Max C Petersen
- Departments of Internal Medicine and Cellular & Molecular Physiology, Howard Hughes Medical Institute, Yale University School of Medicine , New Haven, Connecticut
| | - Gerald I Shulman
- Departments of Internal Medicine and Cellular & Molecular Physiology, Howard Hughes Medical Institute, Yale University School of Medicine , New Haven, Connecticut
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30
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Harada K, Suzuki H, Matsunaga S, Onishi T, Nishikawa Y, Funakubo H, Mamiya K, Nagao T, Shinoda N, Sakai S, Kato M, Marui N, Ishii H, Amano T, Matsubara T, Murohara T. Clinical Characteristics of Nonobese Patients with Acute Coronary Syndrome and Increased Epicardial Fat Volume. J Atheroscler Thromb 2018; 25:1044-1052. [PMID: 29386421 PMCID: PMC6193182 DOI: 10.5551/jat.42663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Aim: Increased epicardial fat volume (EFV) is an independent risk factor for acute coronary syndrome (ACS). Although EFV increases with body mass index (BMI), some ACS patients have an increased EFV but normal BMI. We here investigated the clinical characteristics of nonobese ACS patients with an increased EFV. Methods: A total of 197 Japanese patients hospitalized for ACS was evaluated for EFV, abdominal visceral fat area (VFA), and lipid and glucose profiles. Control subjects comprised 141 individuals who were suspected of having ACS but whose coronary computed tomography findings were normal. Results: EFV was increased in ACS patients compared with control subjects (120 ± 47 versus 95 ± 45 mL, P < 0.01). ACS patients were divided into four groups based on average EFV (120 mL) and a BMI obesity cutoff of 25 kg/m2. For the 30 nonobese ACS patients with an above-average EFV, EFV was positively correlated with VFA (r = 0.23, P = 0.031). These individuals were significantly older (74 ± 10 years) and tended to have a higher homeostasis model assessment–insulin resistance value (5.5 ± 3.8) compared with other ACS patients. Among nonobese study subjects, EFV was independently associated with ACS (odds ratio= 2.01, P = 0.021) and correlated with abdominal circumference (r = 0.26, P = 0.017). Conclusion: Nonobese ACS patients with an increased EFV were elderly and tended to manifest insulin resistance. Measurement of EFV may prove informative for evaluation of ACS risk among elderly nonobese individuals with an increased abdominal girth.
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Affiliation(s)
- Ken Harada
- Department of Cardiology, Chubu Rosai Hospital
| | | | | | | | | | | | | | | | | | | | | | | | - Hideki Ishii
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Tetsuya Amano
- Department of Cardiology, Aichi Medical University Hospital
| | | | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine
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31
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Palmnäs MSA, Kopciuk KA, Shaykhutdinov RA, Robson PJ, Mignault D, Rabasa-Lhoret R, Vogel HJ, Csizmadi I. Serum Metabolomics of Activity Energy Expenditure and its Relation to Metabolic Syndrome and Obesity. Sci Rep 2018; 8:3308. [PMID: 29459697 PMCID: PMC5818610 DOI: 10.1038/s41598-018-21585-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 02/01/2018] [Indexed: 12/19/2022] Open
Abstract
Modifiable lifestyle factors, including exercise and activity energy expenditure (AEE), may attenuate the unfavorable health effects of obesity, such as risk factors of metabolic syndrome (MetS). However, the underlying mechanisms are not clear. In this study we sought to investigate whether the metabolite profiles of MetS and adiposity assessed by body mass index (BMI) and central obesity are inversely correlated with AEE and physical activity. We studied 35 men and 47 women, aged 30-60 years, using doubly labeled water to derive AEE and the Sedentary Time and Activity Reporting Questionnaire (STAR-Q) to determine the time spent in moderate and vigorous physical activity. Proton nuclear magnetic resonance spectroscopy was used for serum metabolomics analysis. Serine and glycine were found in lower concentrations in participants with more MetS risk factors and greater adiposity. However, serine and glycine concentrations were higher with increasing activity measures. Metabolic pathway analysis and recent literature suggests that the lower serine and glycine concentrations in the overweight/obese state could be a consequence of serine entering de novo sphingolipid synthesis. Taken together, higher levels of AEE and physical activity may play a crucial part in improving metabolic health in men and women with and without MetS risk factors.
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Affiliation(s)
- Marie S A Palmnäs
- University of Calgary, Department of Biochemistry and Molecular Biology, Calgary, T2N 1N4, Canada
- University of Calgary, Department of Biological Sciences, Calgary, T2N 1N4, Canada
| | - Karen A Kopciuk
- University of Calgary, Department of Oncology, Calgary, T2N 1N4, Canada
- University of Calgary, Department of Mathematics and Statistics, Calgary, T2N 1N4, Canada
| | | | - Paula J Robson
- C-MORE, CancerControl Alberta, Alberta Health Services, Calgary, T5J 3H1, Canada
| | - Diane Mignault
- Institut de Recherches Cliniques de Montréal, Montréal, H2W 1R7, Canada
- Université de Montréal, Département de Nutrition, Montréal, H3T 1J4, Canada
| | - Rémi Rabasa-Lhoret
- Institut de Recherches Cliniques de Montréal, Montréal, H2W 1R7, Canada
- Université de Montréal, Département de Nutrition, Montréal, H3T 1J4, Canada
| | - Hans J Vogel
- University of Calgary, Department of Biochemistry and Molecular Biology, Calgary, T2N 1N4, Canada.
- University of Calgary, Department of Biological Sciences, Calgary, T2N 1N4, Canada.
| | - Ilona Csizmadi
- University of Calgary, Department of Oncology, Calgary, T2N 1N4, Canada.
- University of Calgary, Community Health Sciences, Calgary, T2N 1N4, Canada.
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32
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de Castro GS, Calder PC. Non-alcoholic fatty liver disease and its treatment with n-3 polyunsaturated fatty acids. Clin Nutr 2018; 37:37-55. [DOI: 10.1016/j.clnu.2017.01.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 12/12/2016] [Accepted: 01/10/2017] [Indexed: 02/08/2023]
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Adipose Tissue Function and Expandability as Determinants of Lipotoxicity and the Metabolic Syndrome. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 960:161-196. [PMID: 28585199 DOI: 10.1007/978-3-319-48382-5_7] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The adipose tissue organ is organised as distinct anatomical depots located all along the body axis and it is constituted of three different types of adipocytes : white, beige and brown which are integrated with vascular, immune, neural and extracellular stroma cells. These distinct adipocytes serve different specialised functions. The main function of white adipocytes is to ensure healthy storage of excess nutrients/energy and its rapid mobilisation to supply the demand of energy imposed by physiological cues in other organs, whereas brown and beige adipocytes are designed for heat production through uncoupling lipid oxidation from energy production. The concert action of the three type of adipocytes/tissues has been reported to ensure an optimal metabolic status in rodents. However, when one or multiple of these adipose depots become dysfunctional as a consequence of sustained lipid/nutrient overload, then insulin resistance and associated metabolic complications ensue. These metabolic alterations negatively affects the adipose tissue functionality and compromises global metabolic homeostasis. Optimising white adipose tissue expandability and its functional metabolic flexibility and/or promoting brown/beige mediated thermogenic activity counteracts obesity and its associated lipotoxic metabolic effects. The development of these therapeutic approaches requires a deep understanding of adipose tissue in all broad aspects. In this chapter we will discuss the characteristics of the different adipose tissue depots with respect to origins and precursors recruitment, plasticity, cellular composition and expandability capacity as well as molecular and metabolic signatures in both physiological and pathophysiological conditions.
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34
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Chen X, Wu W, Wang L, Shi Y, Shen F, Gu X, Jia Z. Association Between 25-Hydroxyvitamin D and Epicardial Adipose Tissue in Chinese Non-Obese Patients with Type 2 Diabetes. Med Sci Monit 2017; 23:4304-4311. [PMID: 28877159 PMCID: PMC5598744 DOI: 10.12659/msm.904755] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background Epicardial adipose tissue (EAT) is recognized as a useful indicator for type 2 diabetes mellitus (T2DM) and obesity. However, studies on the association between vitamin D status and EAT thickness in type 2 diabetes (T2D) are limited. In this study, we aimed to evaluate the association of vitamin D (Calcifediol) status and EAT thickness (EATT) in Chinese non-obese patients with T2D. Material/Methods A cross-sectional study was performed among 167 non-obese T2D Chinese patients and 82 non-diabetic patients, who are age- and gender-matched during the winter months. EATT was evaluated by two-dimensional transthoracic echocardiography. Serum 25-hydroxyvitamin D [25(OH)D, Calcifediol] was examined in the diabetic patients and in the control group. Results The concentration of 25(OH)D was 32.00 nmol/l (19.30–53.70 nmol/l) among diabetic patients. Most (93.4%) of the diabetic patients had hypovitaminosis D. We confirmed a clear negative association between 25(OH)D level and EATT in non-obese T2D patients (p=0.01). EATT was significantly correlated with 25(OH)D level (p=0.001) and HOMA-IR (p=0.001). Results of multivariate logistic regression analysis demonstrated increased EATT, which was remarkably associated with 25(OH)D levels (p=0.039), systolic blood pressure (SBP) (p=0.013), HOMA-IR (p=0.030), and waist circumference (p<0.001) in T2D patients after adjusting for the confounding factors. Conclusions Increased EATT was found in Chinese non-obese T2D patients. 25(OH)D and HOMA-IR were independently associated with increased EATT after adjusting for multiple confounders.
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Affiliation(s)
- Xiong Chen
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Wenjun Wu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Luyin Wang
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Yujuan Shi
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Feixia Shen
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Xuemei Gu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Zhijun Jia
- Department of Ultrasound, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
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35
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Fucho R, Casals N, Serra D, Herrero L. Ceramides and mitochondrial fatty acid oxidation in obesity. FASEB J 2016; 31:1263-1272. [PMID: 28003342 DOI: 10.1096/fj.201601156r] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/06/2016] [Indexed: 12/12/2022]
Abstract
Obesity is an epidemic, complex disease that is characterized by increased glucose, lipids, and low-grade inflammation in the circulation, among other factors. It creates the perfect scenario for the production of ceramide, the building block of the sphingolipid family of lipids, which is involved in metabolic disorders such as obesity, diabetes, and cardiovascular disease. In addition, obesity causes a decrease in fatty acid oxidation (FAO), which contributes to lipid accumulation within the cells, conferring more susceptibility to cell dysfunction. C16:0 ceramide, a specific ceramide species, has been identified recently as the principal mediator of obesity-derived insulin resistance, impaired fatty acid oxidation, and hepatic steatosis. In this review, we have sought to cover the importance of the ceramide species and their metabolism, the main ceramide signaling pathways in obesity, and the link between C16:0 ceramide, FAO, and obesity.-Fucho, R., Casals, N., Serra, D., Herrero, L. Ceramides and mitochondrial fatty acid oxidation in obesity.
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Affiliation(s)
- Raquel Fucho
- Department of Biochemistry and Physiology, School of Pharmacy, Institut de Biomedicina, Universitat de Barcelona, Barcelona, Spain
| | - Núria Casals
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain; and.,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Dolors Serra
- Department of Biochemistry and Physiology, School of Pharmacy, Institut de Biomedicina, Universitat de Barcelona, Barcelona, Spain; .,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Laura Herrero
- Department of Biochemistry and Physiology, School of Pharmacy, Institut de Biomedicina, Universitat de Barcelona, Barcelona, Spain; .,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain
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36
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Chaurasia B, Kaddai VA, Lancaster GI, Henstridge DC, Sriram S, Galam DLA, Gopalan V, Prakash KNB, Velan SS, Bulchand S, Tsong TJ, Wang M, Siddique MM, Yuguang G, Sigmundsson K, Mellet NA, Weir JM, Meikle PJ, Bin M Yassin MS, Shabbir A, Shayman JA, Hirabayashi Y, Shiow SATE, Sugii S, Summers SA. Adipocyte Ceramides Regulate Subcutaneous Adipose Browning, Inflammation, and Metabolism. Cell Metab 2016; 24:820-834. [PMID: 27818258 DOI: 10.1016/j.cmet.2016.10.002] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/15/2016] [Accepted: 10/05/2016] [Indexed: 01/23/2023]
Abstract
Adipocytes package incoming fatty acids into triglycerides and other glycerolipids, with only a fraction spilling into a parallel biosynthetic pathway that produces sphingolipids. Herein, we demonstrate that subcutaneous adipose tissue of type 2 diabetics contains considerably more sphingolipids than non-diabetic, BMI-matched counterparts. Whole-body and adipose tissue-specific inhibition/deletion of serine palmitoyltransferase (Sptlc), the first enzyme in the sphingolipid biosynthesis cascade, in mice markedly altered adipose morphology and metabolism, particularly in subcutaneous adipose tissue. The reduction in adipose sphingolipids increased brown and beige/brite adipocyte numbers, mitochondrial activity, and insulin sensitivity. The manipulation also increased numbers of anti-inflammatory M2 macrophages in the adipose bed and induced secretion of insulin-sensitizing adipokines. By comparison, deletion of serine palmitoyltransferase from macrophages had no discernible effects on metabolic homeostasis or adipose function. These data indicate that newly synthesized adipocyte sphingolipids are nutrient signals that drive changes in the adipose phenotype to influence whole-body energy expenditure and nutrient metabolism.
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Affiliation(s)
- Bhagirath Chaurasia
- Laboratory of Translational Metabolic Health, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia.
| | - Vincent Andre Kaddai
- Laboratory of Translational Metabolic Health, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Graeme Iain Lancaster
- Laboratory of Translational Metabolic Health, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Darren C Henstridge
- Cellular and Molecular Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Sandhya Sriram
- Fat Metabolism and Stem Cell Group, Singapore Bioimaging Consortium, Singapore 138667, Singapore
| | - Dwight Lark Anolin Galam
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, Singapore 169547, Singapore
| | - Venkatesh Gopalan
- Laboratory of Molecular Imaging, Singapore Bioimaging Consortium, Singapore 138667, Singapore
| | - K N Bhanu Prakash
- Laboratory of Molecular Imaging, Singapore Bioimaging Consortium, Singapore 138667, Singapore
| | - S Sendhil Velan
- Laboratory of Molecular Imaging, Singapore Bioimaging Consortium, Singapore 138667, Singapore
| | - Sarada Bulchand
- Tata Institute of Fundamental Research, Navy Nagar, Mumbai 400005, India
| | - Teh Jing Tsong
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore 169857, Singapore
| | - Mei Wang
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore 169857, Singapore
| | | | - Guan Yuguang
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, Singapore 169547, Singapore
| | - Kristmundur Sigmundsson
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, Singapore 169547, Singapore
| | - Natalie A Mellet
- Metabolomics Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Jacquelyn M Weir
- Metabolomics Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - Peter J Meikle
- Metabolomics Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
| | - M Shabeer Bin M Yassin
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Asim Shabbir
- Department of Surgery, National University of Singapore, Singapore 117599, Singapore
| | - James A Shayman
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | | | - Sue-Anne Toh Ee Shiow
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Shigeki Sugii
- Fat Metabolism and Stem Cell Group, Singapore Bioimaging Consortium, Singapore 138667, Singapore; Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, Singapore 169547, Singapore
| | - Scott A Summers
- Laboratory of Translational Metabolic Health, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia
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37
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Canpolat U, Bahadir N, Coteli C. Chicken or Egg Causality Paradox Between Insulin Resistance and Epicardial Fat. Angiology 2016; 67:970-971. [PMID: 27178719 DOI: 10.1177/0003319716649108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Uğur Canpolat
- 1 Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Nihan Bahadir
- 1 Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Cem Coteli
- 1 Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Elshorbagy HH, Fouda ER, Kamal NM, Bassiouny MM, Fathi WM. Evaluation oF Epicardial Fat and Carotid Intima-Media Thickness in Obese Children. IRANIAN JOURNAL OF PEDIATRICS 2016; 26:e2968. [PMID: 26848373 PMCID: PMC4733289 DOI: 10.5812/ijp.2968] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 05/01/2015] [Accepted: 06/14/2015] [Indexed: 01/08/2023]
Abstract
Background: Epicardial fat has a role in cardiovascular diseases. Objectives: To assess epicardial fat and its relation with carotid intima-media thickness (IMT) in obese adolescents with metabolic syndrome (MetS). Patients and Methods: The study included 60 obese adolescents and 25 control subjects. According to the presence or absence of MetS, obese subjects were divided into two subgroups. We measured weight, height, calculated Body Mass Index, waist circumference, hip circumference, systolic blood pressure, diastolic blood pressure and biochemical parameters (fasting glucose, total cholesterol, triglycerides, high density lipoprotein cholesterol, and low density lipoprotein cholesterol, High sensitivity C-reactive protein, fasting insulin, a homeostasis model assessment index of insulin resistance. plus an echocardiographic examination with measurement of epicardial adipose tissue thickness (EATT). Results: Left ventricular mass index measurements were significantly higher in MetS group than both non-MS and control groups. The MetS and non-MetS obese patients had significantly higher carotid IMT in comparison to the control group. Carotid IMT measurements were significantly higher in MetS group had than both non-MetS and control groups. Also, EATT was significantly increased in patients with MetS compared to control group. Among MetS obese group, EATT was positively correlated with body mass index-standard deviation score, waist circumference, fasting glucose, fasting insulin, insulin resistance, triglyceride levels, left ventricular thickness, left ventricular mass index and myocardial performance index. EATT was found to be the only predictor of carotid IMT. Conclusions: EATT is closely related to carotid IMT and early cardiac dysfunction in obese adolescents with MetS.
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Affiliation(s)
- Hatem Hamed Elshorbagy
- Departments of Pediatric, Menofia University, Menofia, Egypt
- Corresponding author: Hatem Hamed Elshorbagy, Departments of Pediatric, Menofia University, Menofia, Egypt. Tel: +96-6567500908, E-mail:
| | | | | | | | - Waleed M. Fathi
- Clinical Pathology Department, Menofia University, Menofia, Egypt
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39
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Rabkin SW, Campbell H. Comparison of reducing epicardial fat by exercise, diet or bariatric surgery weight loss strategies: a systematic review and meta-analysis. Obes Rev 2015; 16:406-15. [PMID: 25753297 DOI: 10.1111/obr.12270] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/03/2014] [Accepted: 01/20/2015] [Indexed: 12/22/2022]
Abstract
The objectives were to determine whether epicardial fat (EAT) is subject to modification, and whether various strategies accomplish this end point and the relationship between weight loss and EAT. A systematic review of the literature following meta-analysis guidelines was conducted using the search strategy 'epicardial fat' OR 'epicardial adipose tissue' AND 'diet' OR 'exercise' OR 'bariatric surgery (BS)' OR 'change in body weight' limited to humans. Eleven articles were identified with 12 intervention approaches of which eight studies showed a statistically significant reduction in EAT. A random-effects meta-analysis suggests an overall significant reduction of 1.12 standardized units (95% CI = [-1.71, -0.54], P value < 0.01). While there is a large amount of heterogeneity across study groups, a substantial amount of this variability can be accounted for by considering intervention type and change in body mass index (BMI). These variables were incorporated into a random-effects meta-regression model. Using this analysis, significant EAT reduction occurred with diet and BS but not with exercise. BMI reductions correlated significantly with EAT reductions for diet-based interventions, i.e. for some but not all interventions. In conclusion, EAT, a factor that is significantly associated with coronary artery disease, can be modified. The type of intervention, in addition to the amount of weight loss achieved, is predictive of the amount of EAT reduction.
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Affiliation(s)
- S W Rabkin
- Department of Medicine (Cardiology), University of British Columbia, Vancouver, BC, Canada
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40
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Turpin SM, Nicholls HT, Willmes DM, Mourier A, Brodesser S, Wunderlich CM, Mauer J, Xu E, Hammerschmidt P, Brönneke HS, Trifunovic A, LoSasso G, Wunderlich FT, Kornfeld JW, Blüher M, Krönke M, Brüning JC. Obesity-induced CerS6-dependent C16:0 ceramide production promotes weight gain and glucose intolerance. Cell Metab 2014; 20:678-86. [PMID: 25295788 DOI: 10.1016/j.cmet.2014.08.002] [Citation(s) in RCA: 481] [Impact Index Per Article: 48.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 06/17/2014] [Accepted: 07/25/2014] [Indexed: 01/02/2023]
Abstract
Ceramides increase during obesity and promote insulin resistance. Ceramides vary in acyl-chain lengths from C14:0 to C30:0 and are synthesized by six ceramide synthase enzymes (CerS1-6). It remains unresolved whether obesity-associated alterations of specific CerSs and their defined acyl-chain length ceramides contribute to the manifestation of metabolic diseases. Here we reveal that CERS6 mRNA expression and C16:0 ceramides are elevated in adipose tissue of obese humans, and increased CERS6 expression correlates with insulin resistance. Conversely, CerS6-deficient (CerS6(Δ/Δ)) mice exhibit reduced C16:0 ceramides and are protected from high-fat-diet-induced obesity and glucose intolerance. CerS6 deletion increases energy expenditure and improves glucose tolerance, not only in CerS6(Δ/Δ) mice, but also in brown adipose tissue- (CerS6(ΔBAT)) and liver-specific (CerS6(ΔLIVER)) CerS6 knockout mice. CerS6 deficiency increases lipid utilization in BAT and liver. These experiments highlight CerS6 inhibition as a specific approach for the treatment of obesity and type 2 diabetes mellitus, circumventing the side effects of global ceramide synthesis inhibition.
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Affiliation(s)
- Sarah M Turpin
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Hayley T Nicholls
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Diana M Willmes
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Arnaud Mourier
- CECAD, Cologne, North Rhine-Westphalia 50931, Germany; Max Planck Institute for the Biology of Aging, Cologne, North Rhine-Westphalia 50931, Germany
| | | | - Claudia M Wunderlich
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Jan Mauer
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Elaine Xu
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Philipp Hammerschmidt
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Hella S Brönneke
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | | | - Giuseppe LoSasso
- Laboratory of Integrative and Systems Physiology, School of Life Sciences, École Polytechnique Fédérale, Lausanne 1015, Switzerland
| | - F Thomas Wunderlich
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Jan-Wilhelm Kornfeld
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Leipzig, Saxony 04103, Germany
| | - Martin Krönke
- CECAD, Cologne, North Rhine-Westphalia 50931, Germany; Institute for Medical Microbiology, University Hospital Cologne, Cologne, North Rhine-Westphalia 50931, Germany
| | - Jens C Brüning
- Max Planck Institute for Metabolism Research, Cologne, North Rhine-Westphalia 50931, Germany; CECAD, Cologne, North Rhine-Westphalia 50931, Germany; Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), University Hospital Cologne, Cologne, North Rhine-Westphalia 50931, Germany.
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Fernández-Trasancos Á, Fandiño-Vaquero R, Agra RM, Fernández ÁL, Viñuela JE, González-Juanatey JR, Eiras S. Impaired Adipogenesis and Insulin Resistance in Epicardial Fat-Mesenchymal Cells From Patients With Cardiovascular Disease. J Cell Physiol 2014; 229:1722-30. [DOI: 10.1002/jcp.24619] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 03/17/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Ángel Fernández-Trasancos
- Health Research Institute; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - Rubén Fandiño-Vaquero
- Department of Cardiology and Coronary Unit; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - Rosa María Agra
- Department of Cardiology and Coronary Unit; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - Ángel Luis Fernández
- Department of Heart Surgery; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - Juan E. Viñuela
- Laboratory of Immunology; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - José Ramón González-Juanatey
- Health Research Institute; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
- Department of Cardiology and Coronary Unit; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
| | - Sonia Eiras
- Health Research Institute; University Clinical Hospital of Santiago de Compostela; Santiago de Compostela Spain
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Abstract
PURPOSE OF REVIEW We comment on the associations between epicardial adiposity and cardiovascular disease (CVD) and associated risk factors. The effects of lifestyle measures and CVD drugs on cardiac adipose tissue are also discussed. RECENT FINDINGS Epicardial adipose tissue exerts cardioprotective properties; however, in cases of pathological enlargement, epicardial fat can lead to myocardial inflammation and dysfunction as well as left ventricular hypertrophy and coronary artery disease (CAD) due to paracrine actions that include increased production of reactive oxygen species, atherogenic and inflammatory cytokines. Cardiac adiposity is associated with CAD, obesity, type 2 diabetes, metabolic syndrome, nonalcoholic fatty liver disease, and chronic kidney disease, as well as with CVD risk factors such as lipids, hypertension, obesity markers, and carotid atherosclerosis. SUMMARY Due to its anatomical and functional proximity to the coronary circulation, epicardial adipose tissue may represent an even more direct CVD risk marker than central adiposity. Lifestyle measures and certain drugs may affect its thickness, although there are limited data currently available. The clinical implications of epicardial fat in daily practice remain to be established in future studies.
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Gertow J, Kjellqvist S, Ståhlman M, Cheung L, Gottfries J, Werngren O, Borén J, Franco-Cereceda A, Eriksson P, Fisher RM. Ceramides are associated with inflammatory processes in human mediastinal adipose tissue. Nutr Metab Cardiovasc Dis 2014; 24:124-131. [PMID: 24113394 DOI: 10.1016/j.numecd.2013.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/20/2013] [Accepted: 05/29/2013] [Indexed: 01/28/2023]
Abstract
BACKGROUND AND AIM Ceramides are poorly characterized in human adipose tissue. The aim of this study was to investigate concentrations of different ceramide species in human subcutaneous and visceral adipose tissue depots and to determine associations between ceramides and global gene expression profiles. METHODS AND RESULTS Concentrations of six ceramide species were determined in plasma and in subcutaneous and mediastinal adipose tissue from 10 overweight subjects (BMI 29.4 ± 4.9 kg/m(2)). In the adipose tissue biopsies gene expression arrays were performed and relationships between ceramides and gene expression analyzed. Immunostaining of the two adipose tissue depots was performed in an independent group of 10 patients. Mediastinal adipose tissue contained significantly higher concentrations (p < 0.05) of all six ceramide species than the subcutaneous depot. Of the six ceramides in plasma, concentrations of only two (Cer d18:1/18:0 and Cer d18:1/22:0) correlated significantly (p < 0.05) with the corresponding species in mediastinal adipose tissue, but there were no significant correlations between ceramides in plasma and subcutaneous adipose tissue. Multivariate analysis identified significant correlations between the total ceramide concentration and global gene expression within mediastinal, but not subcutaneous adipose tissue, according to cross-validation. Gene ontology analysis of genes related to ceramides in the mediastinal depot revealed that genes positively correlated with ceramides were associated mainly with immune and inflammatory categories, while genes negatively correlated with ceramides were associated mainly with lipid and carbohydrate metabolism. CONCLUSIONS Ceramides in human mediastinal adipose tissue may be involved in inflammation and lipid and carbohydrate metabolism.
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Affiliation(s)
- J Gertow
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - S Kjellqvist
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - M Ståhlman
- Wallenberg Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - L Cheung
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - J Gottfries
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - O Werngren
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - J Borén
- Wallenberg Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - A Franco-Cereceda
- Cardiothoracic Surgery Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - P Eriksson
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - R M Fisher
- Atherosclerosis Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
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Demir B, Demir E, Acıksarı G, Uygun T, Utku IK, Gedikbasi A, Caglar IM, Pirhan O, Tureli HO, Oflar E, Ungan İ, Ciftci S, Karakaya O. The Association between the Epicardial Adipose Tissue Thickness and Oxidative Stress Parameters in Isolated Metabolic Syndrome Patients: A Multimarker Approach. Int J Endocrinol 2014; 2014:954045. [PMID: 25530760 PMCID: PMC4233660 DOI: 10.1155/2014/954045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 10/01/2014] [Accepted: 10/01/2014] [Indexed: 12/30/2022] Open
Abstract
The risk for cardiovascular diseases and type 2 diabetes mellitus significantly increases in the patient population with metabolic syndrome (MeS). The present study aimed to investigate the association between the epicardial adipose tissue thickness (EATT) and the oxidative stress parameters in MeS patients. The study included 181 patients as a patient group of 92 consecutive patients with MeS and a control group of 89 consecutive patients with similar age and gender. EATT was evaluated by transthoracic echocardiography. Serum levels of total oxidant status (TOS), total antioxidative capacity (TAS), paraoxonase-1 (PON-1), and arylesterase activities were measured. EATT was higher in the MeS group compared to the control group (6.0 ± 2.0 mm and 4.0 ± 1.0 mm, resp.; P < 0.001). The level of TOS was higher in the MeS group compared to the control group (P < 0.001). Additionally, the TAS level was higher in the MeS group compared to the control group (P < 0.001). Furthermore, the serum levels of PON-1 and arylesterase were lower in the MeS group compared to the control group (P < 0.001). EAT may cause an increased risk of cardiovascular diseases by leading to increased oxidative stress in patients with MeS.
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Affiliation(s)
- Bulent Demir
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
- *Bulent Demir:
| | - Esra Demir
- Department of İnternal Medicine, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Turkey
| | - Gonul Acıksarı
- Department of Cardiology, İstinye State Hospital, Turkey
| | - Turgut Uygun
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Irem Kırac Utku
- Department of İnternal Medicine, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Turkey
| | - Asuman Gedikbasi
- Department of Biochemistry, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Turkey
| | - Ilker Murat Caglar
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Osman Pirhan
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Hande Oktay Tureli
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Ersan Oflar
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - İsmail Ungan
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Serkan Ciftci
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
| | - Osman Karakaya
- Department of Cardiology, Bakırkoy Dr. Sadi Konuk Education and Research Hospital, Tevfik Sağlam Caddesi No. 11, Zuhuratbaba Mahallesi, Bakırköy, 34156 Istanbul, Turkey
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45
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Chavez JA, Siddique MM, Wang ST, Ching J, Shayman JA, Summers SA. Ceramides and glucosylceramides are independent antagonists of insulin signaling. J Biol Chem 2013; 289:723-34. [PMID: 24214972 DOI: 10.1074/jbc.m113.522847] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Inhibitors of sphingolipid synthesis protect mice from diet induced-insulin resistance, and sphingolipids such as ceramides and glucosylated-ceramides (e.g., GM3) are putative nutritional intermediates linking obesity to diabetes risk. Herein we investigated the role of each of these sphingolipids in muscle and adipose tissue and conclude that they are independent and separable antagonists of insulin signaling. Of particular note, ceramides antagonize insulin signaling in both myotubes and adipocytes, whereas glucosyceramides are only efficacious in adipocytes: 1) In myotubes exposed to saturated fats, inhibitors of enzymes required for ceramide synthesis enhance insulin signaling, but those targeting glucosylceramide synthase have no effect. 2) Exogenous ceramides antagonize insulin signaling in myotubes, whereas ganglioside precursors do not. 3) Overexpression of glucosylceramide synthase in myotubes induces glucosylceramide but enhances insulin signaling. In contrast, glucosylated ceramides have profound effects in adipocytes. For example, either ganglioside addition or human glucosylceramide synthase overexpression suppresses insulin signaling in adipocytes. These data have important mechanistic implications for understanding how these sphingolipids contribute to energy sensing and the disruption of anabolism under conditions of nutrient oversupply.
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Affiliation(s)
- Jose A Chavez
- From the Stedman Center for Nutrition and Metabolism Research, Duke University Medical Center, Durham, North Carolina 27710
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