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Rezzani R, Favero G, Cominelli G, Pinto D, Rinaldi F. Skin Aging and the Upcoming Role of Ferroptosis in Geroscience. Int J Mol Sci 2024; 25:8238. [PMID: 39125810 PMCID: PMC11311626 DOI: 10.3390/ijms25158238] [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: 07/01/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
The skin is considered the most important organ system in mammals, and as the population ages, it is important to consider skin aging and anti-aging therapeutic strategies. Exposure of the skin to various insults induces significant changes throughout our lives, differentiating the skin of a young adult from that of an older adult. These changes are caused by a combination of intrinsic and extrinsic aging. We report the interactions between skin aging and its metabolism, showing that the network is due to several factors. For example, iron is an important nutrient for humans, but its level increases with aging, inducing deleterious effects on cellular functions. Recently, it was discovered that ferroptosis, or iron-dependent cell death, is linked to aging and skin diseases. The pursuit of new molecular targets for ferroptosis has recently attracted attention. Prevention of ferroptosis is an effective therapeutic strategy for the treatment of diseases, especially in old age. However, the pathological and biological mechanisms underlying ferroptosis are still not fully understood, especially in skin diseases such as melanoma and autoimmune diseases. Only a few basic studies on regulated cell death exist, and the challenge is to turn the studies into clinical applications.
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Affiliation(s)
- Rita Rezzani
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (G.F.); (G.C.)
- Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy; (D.P.); (F.R.)
- Italian Society for the Study of Orofacial Pain (Società Italiana Studio Dolore Orofacciale—SISDO), 25123 Brescia, Italy
| | - Gaia Favero
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (G.F.); (G.C.)
- Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy; (D.P.); (F.R.)
| | - Giorgia Cominelli
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy; (G.F.); (G.C.)
| | - Daniela Pinto
- Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy; (D.P.); (F.R.)
- Human Microbiome Advanced Project Institute, 20129 Milan, Italy
| | - Fabio Rinaldi
- Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy; (D.P.); (F.R.)
- Human Microbiome Advanced Project Institute, 20129 Milan, Italy
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DeBari MK, Johnston EK, Scott JV, Ilzuka E, Sun W, Webster-Wood VA, Abbott RD. A Preliminary Study on Factors That Drive Patient Variability in Human Subcutaneous Adipose Tissues. Cells 2024; 13:1240. [PMID: 39120271 PMCID: PMC11311805 DOI: 10.3390/cells13151240] [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: 06/10/2024] [Revised: 07/15/2024] [Accepted: 07/19/2024] [Indexed: 08/10/2024] Open
Abstract
Adipose tissue is a dynamic regulatory organ that has profound effects on the overall health of patients. Unfortunately, inconsistencies in human adipose tissues are extensive and multifactorial, including large variability in cellular sizes, lipid content, inflammation, extracellular matrix components, mechanics, and cytokines secreted. Given the high human variability, and since much of what is known about adipose tissue is from animal models, we sought to establish correlations and patterns between biological, mechanical, and epidemiological properties of human adipose tissues. To do this, twenty-six independent variables were cataloged for twenty patients, which included patient demographics and factors that drive health, obesity, and fibrosis. A factorial analysis for mixed data (FAMD) was used to analyze patterns in the dataset (with BMI > 25), and a correlation matrix was used to identify interactions between quantitative variables. Vascular endothelial growth factor A (VEGFA) and actin alpha 2, smooth muscle (ACTA2) gene expression were the highest loadings in the first two dimensions of the FAMD. The number of adipocytes was also a key driver of patient-related differences, where a decrease in the density of adipocytes was associated with aging. Aging was also correlated with a decrease in overall lipid percentage of subcutaneous tissue, with lipid deposition being favored extracellularly, an increase in transforming growth factor-β1 (TGFβ1), and an increase in M1 macrophage polarization. An important finding was that self-identified race contributed to variance between patients in this study, where Black patients had significantly lower gene expression levels of TGFβ1 and ACTA2. This finding supports the urgent need to account for patient ancestry in biomedical research to develop better therapeutic strategies for all patients. Another important finding was that TGFβ induced factor homeobox 1 (TGIF1), an understudied signaling molecule, which is highly correlated with leptin signaling, was correlated with metabolic inflammation. Furthermore, this study draws attention to what we define as "extracellular lipid droplets", which were consistently found in collagen-rich regions of the obese adipose tissues evaluated here. Reduced levels of TGIF1 were correlated with higher numbers of extracellular lipid droplets and an inability to suppress fibrotic changes in adipose tissue. Finally, this study indicated that M1 and M2 macrophage markers were correlated with each other and leptin in patients with a BMI > 25. This finding supports growing evidence that macrophage polarization in obesity involves a complex, interconnecting network system rather than a full switch in activation patterns from M2 to M1 with increasing body mass. Overall, this study reinforces key findings in animal studies and identifies important areas for future research, where human and animal studies are divergent. Understanding key drivers of human patient variability is required to unravel the complex metabolic health of unique patients.
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Affiliation(s)
- Megan K. DeBari
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
| | - Elizabeth K. Johnston
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
| | - Jacqueline V. Scott
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
| | - Erica Ilzuka
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
| | - Wenhuan Sun
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
| | - Victoria A. Webster-Wood
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
| | - Rosalyn D. Abbott
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA; (M.K.D.); (E.K.J.); (J.V.S.); (E.I.); (V.A.W.-W.)
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3
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Graelmann FJ, Gondorf F, Majlesain Y, Niemann B, Klepac K, Gosejacob D, Gottschalk M, Mayer M, Iriady I, Hatzfeld P, Lindenberg SK, Wunderling K, Thiele C, Abdullah Z, He W, Hiller K, Händler K, Beyer MD, Ulas T, Pfeifer A, Esser C, Weighardt H, Förster I, Reverte-Salisa L. Differential cell type-specific function of the aryl hydrocarbon receptor and its repressor in diet-induced obesity and fibrosis. Mol Metab 2024; 85:101963. [PMID: 38821174 PMCID: PMC11214421 DOI: 10.1016/j.molmet.2024.101963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/02/2024] [Accepted: 05/25/2024] [Indexed: 06/02/2024] Open
Abstract
OBJECTIVE The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor regulating xenobiotic responses as well as physiological metabolism. Dietary AhR ligands activate the AhR signaling axis, whereas AhR activation is negatively regulated by the AhR repressor (AhRR). While AhR-deficient mice are known to be resistant to diet-induced obesity (DIO), the influence of the AhRR on DIO has not been assessed so far. METHODS In this study, we analyzed AhRR-/- mice and mice with a conditional deletion of either AhRR or AhR in myeloid cells under conditions of DIO and after supplementation of dietary AhR ligands. Moreover, macrophage metabolism was assessed using Seahorse Mito Stress Test and ROS assays as well as transcriptomic analysis. RESULTS We demonstrate that global AhRR deficiency leads to a robust, but not as profound protection from DIO and hepatosteatosis as AhR deficiency. Under conditions of DIO, AhRR-/- mice did not accumulate TCA cycle intermediates in the circulation in contrast to wild-type (WT) mice, indicating protection from metabolic dysfunction. This effect could be mimicked by dietary supplementation of AhR ligands in WT mice. Because of the predominant expression of the AhRR in myeloid cells, AhRR-deficient macrophages were analyzed for changes in metabolism and showed major metabolic alterations regarding oxidative phosphorylation and mitochondrial activity. Unbiased transcriptomic analysis revealed increased expression of genes involved in de novo lipogenesis and mitochondrial biogenesis. Mice with a genetic deficiency of the AhRR in myeloid cells did not show alterations in weight gain after high fat diet (HFD) but demonstrated ameliorated liver damage compared to control mice. Further, deficiency of the AhR in myeloid cells also did not affect weight gain but led to enhanced liver damage and adipose tissue fibrosis compared to controls. CONCLUSIONS AhRR-deficient mice are resistant to diet-induced metabolic syndrome. Although conditional ablation of either the AhR or AhRR in myeloid cells did not recapitulate the phenotype of the global knockout, our findings suggest that enhanced AhR signaling in myeloid cells deficient for AhRR protects from diet-induced liver damage and fibrosis, whereas myeloid cell-specific AhR deficiency is detrimental.
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Affiliation(s)
- Frederike J Graelmann
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Fabian Gondorf
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Yasmin Majlesain
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Birte Niemann
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Katarina Klepac
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Dominic Gosejacob
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Marlene Gottschalk
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Michelle Mayer
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Irina Iriady
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Philip Hatzfeld
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Sophie K Lindenberg
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Klaus Wunderling
- Biochemistry & Cell Biology of Lipids, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Christoph Thiele
- Biochemistry & Cell Biology of Lipids, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Zeinab Abdullah
- Institute of Molecular Medicine and Experimental Immunology, University Hospital Bonn, University of Bonn, Germany
| | - Wei He
- Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Karsten Hiller
- Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Kristian Händler
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; Institute of Human Genetics, Universitätsklinikum Schleswig-Holstein, University of Lübeck and University of Kiel, 23562 Lübeck, Germany
| | - Marc D Beyer
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Immunogenomics & Neurodegeneration, German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Thomas Ulas
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Charlotte Esser
- IUF-Leibniz Research Institute for Environmental Medicine gGmbH, Düsseldorf, Germany
| | - Heike Weighardt
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; IUF-Leibniz Research Institute for Environmental Medicine gGmbH, Düsseldorf, Germany
| | - Irmgard Förster
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany.
| | - Laia Reverte-Salisa
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany.
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Lecoutre S, Rebière C, Marcelin G, Clément K. How does bariatric surgery remodel adipose tissue? ANNALES D'ENDOCRINOLOGIE 2024; 85:175-178. [PMID: 38871506 DOI: 10.1016/j.ando.2024.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
This lecture delves into the pivotal role of adipose tissue in obesity and its response to weight loss, particularly via bariatric surgery. Adipose tissue, responsible for storing excess energy, undergoes significant changes during obesity, marked by inflammation and fibrosis. Bariatric surgery, serving as a model, allow the exploration of adipose tissue remodeling post-weight loss, inducing metabolic and fibro-inflammatory shifts. Despite successful weight loss, inflammation and fibrosis persist, as evidenced by changes in immune cells, altered cytokine profiles and the accumulation of extracellular matrix (ECM). Unfortunately, these lingering effects impair the normal adipose tissue function. In this context, adipose progenitors, an heterogenous resident population of mesenchymal stromal cells, display functions important to fibrosis development, capable of differentiating into myofibroblasts and contributing to ECM deposition. Particularly, a distinct subpopulation of adipose progenitors with high CD9 expression (CD9high) is associated with fibrosis and insulin resistance in human obesity. The persistence of fibrosis post-weight loss poses challenges, correlating with metabolic dysfunction despite improved glucose tolerance. A comprehensive understanding of the mechanisms driving adipose tissue remodeling and fibrosis post-weight loss is imperative for the development of effective treatments for obesity. The intricate interplay between adipose tissue, inflammation, and fibrosis underscores the necessity for further in-depth research to elucidate these mechanisms and formulate targeted therapies for obesity-related complications.
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Affiliation(s)
- Simon Lecoutre
- Research Unit: Nutrition and Obesities; Systemic Approaches, NutriOmics, Inserm, Sorbonne université, Paris, France
| | - Clémentine Rebière
- Research Unit: Nutrition and Obesities; Systemic Approaches, NutriOmics, Inserm, Sorbonne université, Paris, France; Nutrition Department, Pitié-Salpêtrière Hospital, Paris Public Hospitals, Paris, France
| | - Geneviève Marcelin
- Nutrition Department, Pitié-Salpêtrière Hospital, Paris Public Hospitals, Paris, France
| | - Karine Clément
- Research Unit: Nutrition and Obesities; Systemic Approaches, NutriOmics, Inserm, Sorbonne université, Paris, France.
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5
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Drygalski K, Higos R, Merabtene F, Mojsak P, Grubczak K, Ciborowski M, Razak H, Clément K, Dugail I. Extracellular matrix hyaluronan modulates fat cell differentiation and primary cilia dynamics. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159470. [PMID: 38423452 DOI: 10.1016/j.bbalip.2024.159470] [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: 12/04/2023] [Revised: 02/02/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
Hyaluronan is an important extracellular matrix component, with poorly documented physiological role in the context of lipid-rich adipose tissue. We have investigated the global impact of hyaluronan removal from adipose tissue environment by in vitro exposure to exogenous hyaluronidase (or heat inactivated enzyme). Gene set expression analysis from RNA sequencing revealed downregulated adipogenesis as a main response to hyaluronan removal from human adipose tissue samples, which was confirmed by hyaluronidase-mediated inhibition of adipocyte differentiation in the 3T3L1 adipose cell line. Hyaluronidase exposure starting from the time of induction with the differentiation cocktail reduced lipid accumulation in mature adipocytes, limited the expression of terminal differentiation marker genes, and impaired the early induction of co-regulated Cebpa and Pparg mRNA. Reduction of Cebpa and Pparg expression by exogenous hyaluronidase was also observed in cultured primary preadipocytes from subcutaneous, visceral or brown adipose tissue of mice. Mechanistically, inhibition of adipogenesis by hyaluronan removal was not caused by changes in osmotic pressure or cell inflammatory status, could not be mimicked by exposure to threose, a metabolite generated by hyaluronan degradation, and was not linked to alteration in endogenous Wnt ligands expression. Rather, we observed that hyaluronan removal associated with disrupted primary cilia dynamics, with elongated cilium and higher proportions of preadipocytes that remained ciliated in hyaluronidase-treated conditions. Thus, our study points to a new link between ciliogenesis and hyaluronan impacting adipose tissue development.
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Affiliation(s)
- Krzysztof Drygalski
- INSERM, Sorbonne Université, NutriOmics team : Nutrition/Obesities- systemic approaches, Paris 75013, France; Department of Hypertension and Diabetology, Medical University of Gdansk, 80-210 Gdansk, Poland
| | - Romane Higos
- INSERM, Sorbonne Université, NutriOmics team : Nutrition/Obesities- systemic approaches, Paris 75013, France
| | - Fatiha Merabtene
- INSERM, Sorbonne Université, NutriOmics team : Nutrition/Obesities- systemic approaches, Paris 75013, France
| | - Patrycja Mojsak
- Clinical Research Centre, Medical University of Bialystok, 15-276 Białystok, Poland
| | - Kamil Grubczak
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Michal Ciborowski
- Clinical Research Centre, Medical University of Bialystok, 15-276 Białystok, Poland
| | - Hady Razak
- Department of General and Endocrine Surgery, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Karine Clément
- INSERM, Sorbonne Université, NutriOmics team : Nutrition/Obesities- systemic approaches, Paris 75013, France; Assistance Publique-Hopitaux de Paris, Nutrition department, Pitié-Salpetrière Hospital, 75013 Paris, France
| | - Isabelle Dugail
- INSERM, Sorbonne Université, NutriOmics team : Nutrition/Obesities- systemic approaches, Paris 75013, France.
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Robino JJ, Plekhanov AP, Zhu Q, Jensen MD, Scherer PE, Roberts CT, Varlamov O. Adipose Tissue Analysis Toolkit (ATAT) for automated analysis of adipocyte size and extracellular matrix in white adipose tissue. Obesity (Silver Spring) 2024; 32:723-732. [PMID: 38321231 PMCID: PMC10965369 DOI: 10.1002/oby.23992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/28/2023] [Accepted: 12/19/2023] [Indexed: 02/08/2024]
Abstract
OBJECTIVE The pathological expansion of white adipose tissue (WAT) in obesity involves adipocyte hypertrophy accompanied by expansion of the collagen-rich pericellular extracellular matrix (ECM) and development of crown-like structures (CLS). Traditionally, WAT morphology is assessed through immunohistochemical analysis of WAT sections. However, manual analysis of large histological sections is time-consuming, and the available digital tools for analyzing adipocyte size and pericellular ECM are limited. To address this gap, the authors developed the Adipose Tissue Analysis Toolkit (ATAT), an ImageJ plugin facilitating analysis of adipocyte size, WAT ECM, and CLS. METHODS AND RESULTS ATAT utilizes local and image-level differentials in pixel intensity to independently threshold image background, distinguishing adipocyte-free tissue without user input. It accurately captures adipocytes in histological sections stained with common dyes and automates the analysis of adipocyte cross-sectional area, total-field, and localized region-of-interest ECM. ATAT allows fully automated batch analysis of histological images using default or user-defined adipocyte detection parameters. CONCLUSIONS ATAT provides several advantages over existing WAT image analysis tools, enabling high-throughput analyses of adipocyte-specific parameters and facilitating the assessment of ECM changes associated with WAT remodeling due to weight changes and other pathophysiological alterations that affect WAT function.
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Affiliation(s)
- Jacob J. Robino
- Division of Metabolic Health and Disease, Oregon National Primate Research Center, Beaverton, Oregon, USA
| | - Alexander P. Plekhanov
- Division of Metabolic Health and Disease, Oregon National Primate Research Center, Beaverton, Oregon, USA
| | - Qingzhang Zhu
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | - Philipp E. Scherer
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Charles T. Roberts
- Division of Metabolic Health and Disease, Oregon National Primate Research Center, Beaverton, Oregon, USA
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, Beaverton, Oregon, USA
| | - Oleg Varlamov
- Division of Metabolic Health and Disease, Oregon National Primate Research Center, Beaverton, Oregon, USA
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7
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Bilson J, Oquendo CJ, Read J, Scorletti E, Afolabi PR, Lord J, Bindels LB, Targher G, Mahajan S, Baralle D, Calder PC, Byrne CD, Sethi JK. Markers of adipose tissue fibrogenesis associate with clinically significant liver fibrosis and are unchanged by synbiotic treatment in patients with NAFLD. Metabolism 2024; 151:155759. [PMID: 38101770 DOI: 10.1016/j.metabol.2023.155759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND AND AIMS Subcutaneous adipose tissue (SAT) dysfunction contributes to NAFLD pathogenesis and may be influenced by the gut microbiota. Whether transcript profiles of SAT are associated with liver fibrosis and are influenced by synbiotic treatment (that changes the gut microbiome) is unknown. We investigated: (a) whether the presence of clinically significant, ≥F2 liver fibrosis associated with adipose tissue (AT) dysfunction, differential gene expression in SAT, and/or a marker of tissue fibrosis (Composite collagen gene expression (CCGE)); and (b) whether synbiotic treatment modified markers of AT dysfunction and the SAT transcriptome. METHODS Sixty-two patients with NAFLD (60 % men) were studied before and after 12 months of treatment with synbiotic or placebo and provided SAT samples. Vibration-controlled transient elastography (VCTE)-validated thresholds were used to assess liver fibrosis. RNA-sequencing and histological analysis of SAT were performed to determine differential gene expression, CCGE and the presence of collagen fibres. Regression modelling and receiver operator characteristic curve analysis were used to test associations with, and risk prediction for, ≥F2 liver fibrosis. RESULTS Patients with ≥F2 liver fibrosis (n = 24) had altered markers of AT dysfunction and a SAT gene expression signature characterised by enrichment of inflammatory and extracellular matrix-associated genes, compared to those with CONCLUSION A differential gene expression signature in SAT associates with ≥F2 liver fibrosis is explained by a measure of systemic insulin resistance and is not changed by synbiotic treatment. SAT CCGE values are a good predictor of ≥F2 liver fibrosis in NAFLD.
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Affiliation(s)
- Josh Bilson
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK
| | - Carolina J Oquendo
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - James Read
- School of Chemistry, Faculty of Engineering and Physical sciences, University of Southampton, Southampton, UK; Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Eleonora Scorletti
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK; Division of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Paul R Afolabi
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK
| | - Jenny Lord
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Laure B Bindels
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UC Louvain, Université Catholique de Louvain, Brussels, Belgium; Welbio department, WEL Research Institute, Wavre, Belgium
| | - Giovanni Targher
- Department of Medicine, University of Verona, Italy; Metabolic Diseases Unit, IRCCS Sacro Cuore - Don Calabria Hospital, Negrar di Valpolicella, Italy
| | - Sumeet Mahajan
- School of Chemistry, Faculty of Engineering and Physical sciences, University of Southampton, Southampton, UK; Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Diana Baralle
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Philip C Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK; Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Christopher D Byrne
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK.
| | - Jaswinder K Sethi
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK; National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, UK; Institute for Life Sciences, University of Southampton, Southampton, UK.
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8
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Jiménez-Franco A, Castañé H, Martínez-Navidad C, Placed-Gallego C, Hernández-Aguilera A, Fernández-Arroyo S, Samarra I, Canela-Capdevila M, Arenas M, Zorzano A, Hernández-Alvarez MI, Castillo DD, Paris M, Menendez JA, Camps J, Joven J. Metabolic adaptations in severe obesity: Insights from circulating oxylipins before and after weight loss. Clin Nutr 2024; 43:246-258. [PMID: 38101315 DOI: 10.1016/j.clnu.2023.12.002] [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: 06/26/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND The relationship between lipid mediators and severe obesity remains unclear. Our study investigates the impact of severe obesity on plasma concentrations of oxylipins and fatty acids and explores the consequences of weight loss. METHODS In the clinical trial identifier NCT05554224 study, 116 patients with severe obesity and 63 overweight/obese healthy controls matched for age and sex (≈2:1) provided plasma. To assess the effect of surgically induced weight loss, we requested paired plasma samples from 44 patients undergoing laparoscopic sleeve gastrectomy one year after the procedure. Oxylipins were measured using ultra-high-pressure liquid chromatography coupled to a triple quadrupole mass spectrometer via semi-targeted lipidomics. Cytokines and markers of interorgan crosstalk were measured using enzyme-linked immunosorbent assays. RESULTS We observed significantly elevated levels of circulating fatty acids and oxylipins in patients with severe obesity compared to their metabolically healthier overweight/obese counterparts. Our findings indicated that sex and liver disease were not confounding factors, but we observed weak correlations in plasma with circulating adipokines, suggesting the influence of adipose tissue. Importantly, while weight loss restored the balance in circulating fatty acids, it did not fully normalize the oxylipin profile. Before surgery, oxylipins derived from lipoxygenase activity, such as 12-HETE, 11-HDoHE, 14-HDoHE, and 12-HEPE, were predominant. However, one year following laparoscopic sleeve gastrectomy, we observed a complex shift in the oxylipin profile, favoring species from the cyclooxygenase pathway, particularly proinflammatory prostanoids like TXB2, PGE2, PGD2, and 12-HHTrE. This transformation appears to be linked to a reduction in adiposity, underscoring the role of lipid turnover in the development of metabolic disorders associated with severe obesity. CONCLUSIONS Despite the reduction in fatty acid levels associated with weight loss, the oxylipin profile shifts towards a predominance of more proinflammatory species. These observations underscore the significance of seeking mechanistic approaches to address severe obesity and emphasize the importance of closely monitoring the metabolic adaptations after weight loss.
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Affiliation(s)
- Andrea Jiménez-Franco
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Helena Castañé
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Cristian Martínez-Navidad
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Cristina Placed-Gallego
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Anna Hernández-Aguilera
- Department of Pathology, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | | | - Iris Samarra
- Center for Omics Sciences, EURECAT-Technology Center of Catalonia, Reus, Spain
| | - Marta Canela-Capdevila
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain; Department of Radiation Oncology, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Meritxell Arenas
- Department of Radiation Oncology, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
| | - Antonio Zorzano
- Department de Bioquímica i Biomedicina Molecular, Facultat de Biología, Barcelona, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Spain
| | - María Isabel Hernández-Alvarez
- Department de Bioquímica i Biomedicina Molecular, Facultat de Biología, Barcelona, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Spain
| | - Daniel Del Castillo
- Servei de Cirurgia, Hospital Sant Joan de Reus, Institut d'Investigació Sanitària Pere Virgili. Avinguda, Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
| | - Marta Paris
- Servei de Cirurgia, Hospital Sant Joan de Reus, Institut d'Investigació Sanitària Pere Virgili. Avinguda, Departament de Medicina i Cirurgia, Universitat Rovira i Virgili, Reus, Spain
| | - Javier A Menendez
- Metabolism and Cancer Group, Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Girona, Spain; Girona Biomedical Research Institute, Girona, Spain
| | - Jordi Camps
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain.
| | - Jorge Joven
- Unitat de Recerca Biomèdica, Hospital Universitari Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain.
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9
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Robino JJ, Plekhanov AP, Zhu Q, Jensen MD, Scherer PE, Roberts CT, Varlamov O. Adipose Tissue Analysis Toolkit (ATAT) for Automated Analysis of Adipocyte Size and Extracellular Matrix in White Adipose Tissue. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.12.571339. [PMID: 38318208 PMCID: PMC10843162 DOI: 10.1101/2023.12.12.571339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Objective The pathological expansion of white adipose tissue (WAT) in obesity involves adipocyte hypertrophy accompanied by expansion of collagen-rich pericellular extracellular matrix (ECM) and the development of crown-like structures (CLS). Traditionally, WAT morphology is assessed through immunohistochemical analysis of WAT sections. However, manual analysis of large histological sections is time-consuming, and available digital tools for analyzing adipocyte size and pericellular ECM are limited. To address this gap, we developed the Adipose Tissue Analysis Toolkit (ATAT), an ImageJ plugin facilitating analysis of adipocyte size, WAT ECM and CLS. Methods and Results ATAT utilizes local and image-level differentials in pixel intensity to independently threshold background, distinguishing adipocyte-free tissue without user input. It accurately captures adipocytes in histological sections stained with common dyes and automates the analysis of adipocyte cross-sectional area, total-field, and localized region-of-interest ECM. ATAT allows fully automated batch analysis of histological images using default or user-defined adipocyte detection parameters. Conclusions ATAT provides several advantages over existing WAT image analysis tools, enabling high-throughput analyses of adipocyte-specific parameters and facilitating the assessment of ECM changes associated with WAT remodeling due to weight changes and other pathophysiological alterations that affect WAT function. Study Importance Questions What is already known about this subject?: The manual analysis of large WAT histological sections is very time-consuming, while digital tools for the analysis of WAT are limited.What are the new findings in your manuscript?: - ATAT enables fully automated analysis of batches of histological images using either default or user-defined adipocyte detection parameters- ATAT allows high-throughput analyses of adipocyte-specific parameters and pericellular extracellular matrix- ATAT enables the assessment of fibrotic changes associated with WAT remodeling and crown-like structuresHow might your results change the direction of research or the focus of clinical practice?: - ATAT is designed to work with histological sections and digital images obtained using a slide scanner or a microscope.- This tool will help basic and clinical researchers to conduct automated analyses of adipose tissue histological sections.
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10
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Pincu Y, Makarenkov N, Tsitrina AA, Rosengarten-Levine M, Haim Y, Yoel U, Liberty IF, Dukhno O, Kukeev I, Blüher M, Veksler-Lublinsky I, Rudich A. Visceral adipocyte size links obesity with dysmetabolism more than fibrosis, and both can be estimated by circulating miRNAs. Obesity (Silver Spring) 2023; 31:2986-2997. [PMID: 37746932 DOI: 10.1002/oby.23899] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/20/2023] [Accepted: 07/31/2023] [Indexed: 09/26/2023]
Abstract
OBJECTIVE In obesity, adipocyte hypertrophy is detrimental to health, but its' interrelation with fibrosis in the visceral adipose tissue (VAT) depot remains unclear. Because VAT is less accessible via biopsy, biomarkers for VAT quality are needed. The authors hypothesized that VAT adipocyte size and fibrosis are interrelated and can be estimated by circulating microRNAs (circ-miRNAs), contributing to subphenotyping obesity. METHODS Adipocyte size and AT fibrosis were estimated in n = 43 participants (BMI ≥ 30 kg/m2 ). Circ-miRNAs were sequenced (Next Generation Sequencing). RESULTS Participants with above- versus below-median VAT adipocyte area exhibited metabolic dysfunction but lower total and pericellular fibrosis. VAT adipocyte size remained associated with metabolic dysfunction even when controlling for BMI or VAT fibrosis in the entire cohort, as in matched-pairs subanalyses. Next Generation Sequencing uncovered 22 and 6 circ-miRNAs associated with VAT adipocyte size and fibrosis, respectively, with miRNA-130b-3p common to both analyses. The combination of miRNA-130b-3p + miR-150-5p + high-density lipoprotein cholesterol discriminated among those with large versus small VAT adipocytes (receiver operating characteristic-area under the curve: 0.872 [95% CI: 0.747-0.996]), whereas miRNA-130b-3p + miRNA-15a-5p + high-density lipoprotein cholesterol discriminated among those with low and high fibrosis (receiver operating characteristic-area under the curve: 0.823 [95% CI: 0.676-0.97]). CONCLUSIONS These findings suggest that VAT adipocyte size and fibrosis are inversely correlated in obesity and can be estimated by distinct circ-miRNAs, providing a potential tool to subphenotype obesity via a liquid biopsy-like approach to assess VAT health in nonsurgical patients.
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Affiliation(s)
- Yair Pincu
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Nataly Makarenkov
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Alexandra A Tsitrina
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Marina Rosengarten-Levine
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Yulia Haim
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
- The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Uri Yoel
- Soroka University Medical Center, Be'er-Sheva, Israel
| | | | - Oleg Dukhno
- Soroka University Medical Center, Be'er-Sheva, Israel
| | - Ivan Kukeev
- Soroka University Medical Center, Be'er-Sheva, Israel
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
| | - Isana Veksler-Lublinsky
- Department of Software and Information Systems Engineering, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
- The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Be'er-Sheva, Israel
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11
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Osorio-Conles Ó, Jiménez A, Ibarzabal A, Balibrea JM, de Hollanda A, Vidal J. Limited Bariatric Surgery-induced Weight Loss in Subjects With Type 2 Diabetes: Predictor Variables in Adipose Tissue. J Clin Endocrinol Metab 2023; 108:e1205-e1213. [PMID: 37249080 DOI: 10.1210/clinem/dgad271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Indexed: 05/31/2023]
Abstract
CONTEXT The impact of type 2 diabetes mellitus (T2D) at baseline on limited weight loss (WL) after bariatric surgery (BS) remains controversial, and the potential underlying mechanisms incompletely understood. OBJECTIVE We aimed at gaining further insight on this relationship and identifying novel associations between adipose tissue (AT) parameters and short-term WL outcomes in subjects with or without T2D undergoing BS. METHODS Mid-term WL trajectories after BS have been evaluated in a cohort of 1659 subjects (cohort 1) with (n = 543) and without T2D (n = 1116). Paired subcutaneous and visceral AT samples were obtained from a cohort of 48 pairs of subjects with and without T2D matched for age, sex, BMI, and type of BS (cohort 2). Differences in AT parameters between groups were evaluated and potential associations with WL response explored. RESULTS T2D was independently associated with a 5% lesser mid-term WL in cohort 1, while HbA1c, insulin treatment, and number of T2D medications prior to BS were only related to short-term WL outcomes. In cohort 2, a number of differentially expressed genes in AT were identified between groups, while fat cell size and fibrosis were comparable. Subcutaneous ATG7 expression was found as an independent predictor of limited WL 1 year after surgery (β: -12.21 ± 4.41, P = .008) and its addition to a clinical model significantly improved the amount of WL variability explained (R2 = 0.131 vs R2 = 0.248, F change P = .009). CONCLUSION Our results highlight the importance of T2D as determinant of limited WL following BS and suggest that dysregulated macroautophagy in subcutaneous AT may contribute to this association.
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Affiliation(s)
- Óscar Osorio-Conles
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Amanda Jiménez
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Ainitze Ibarzabal
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
| | - José María Balibrea
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
| | - Ana de Hollanda
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Josep Vidal
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
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12
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Perdomo CM, Avilés-Olmos I, Dicker D, Frühbeck G. Towards an adiposity-related disease framework for the diagnosis and management of obesities. Rev Endocr Metab Disord 2023; 24:795-807. [PMID: 37162651 PMCID: PMC10492748 DOI: 10.1007/s11154-023-09797-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/10/2023] [Indexed: 05/11/2023]
Abstract
Obesity is a complex disease that relapses frequently and associates with multiple complications that comprise a worldwide health priority because of its rising prevalence and association with numerous complications, including metabolic disorders, mechanic pathologies, and cancer, among others. Noteworthy, excess adiposity is accompanied by chronic inflammation, oxidative stress, insulin resistance, and subsequent organ dysfunction. This dysfunctional adipose tissue is initially stored in the visceral depot, overflowing subsequently to produce lipotoxicity in ectopic depots like liver, heart, muscle, and pancreas, among others. People living with obesity need a diagnostic approach that considers an exhaustive pathophysiology and complications assessment. Thus, it is essential to warrant a holistic diagnosis and management that guarantees an adequate health status, and quality of life. The present review summarizes the different complications associated with obesity, at the same time, we aim to fostering a novel framework that enhances a patient-centered approach to obesity management in the precision medicine era.
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Affiliation(s)
- Carolina M Perdomo
- Department of Endocrinology and Nutrition. Clínica, Universidad de Navarra, Pamplona, Spain
- IdiSNA (Instituto de Investigación en la Salud de Navarra), Pamplona, Spain
- CIBEROBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Icíar Avilés-Olmos
- IdiSNA (Instituto de Investigación en la Salud de Navarra), Pamplona, Spain
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Dror Dicker
- Department of Internal Medicine D, Rabin Medical Center, Hasharon Hospital, Petah Tikva, Israel
- Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Gema Frühbeck
- Department of Endocrinology and Nutrition. Clínica, Universidad de Navarra, Pamplona, Spain.
- IdiSNA (Instituto de Investigación en la Salud de Navarra), Pamplona, Spain.
- CIBEROBN, Instituto de Salud Carlos III, Madrid, Spain.
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13
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Kuziel G, Moore BN, Arendt LM. Obesity and Fibrosis: Setting the Stage for Breast Cancer. Cancers (Basel) 2023; 15:cancers15112929. [PMID: 37296891 DOI: 10.3390/cancers15112929] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity is a rising health concern and is linked to a worsened breast cancer prognosis. Tumor desmoplasia, which is characterized by elevated numbers of cancer-associated fibroblasts and the deposition of fibrillar collagens within the stroma, may contribute to the aggressive clinical behavior of breast cancer in obesity. A major component of the breast is adipose tissue, and fibrotic changes in adipose tissue due to obesity may contribute to breast cancer development and the biology of the resulting tumors. Adipose tissue fibrosis is a consequence of obesity that has multiple sources. Adipocytes and adipose-derived stromal cells secrete extracellular matrix composed of collagen family members and matricellular proteins that are altered by obesity. Adipose tissue also becomes a site of chronic, macrophage-driven inflammation. Macrophages exist as a diverse population within obese adipose tissue and mediate the development of fibrosis through the secretion of growth factors and matricellular proteins and interactions with other stromal cells. While weight loss is recommended to resolve obesity, the long-term effects of weight loss on adipose tissue fibrosis and inflammation within breast tissue are less clear. Increased fibrosis within breast tissue may increase the risk for tumor development as well as promote characteristics associated with tumor aggressiveness.
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Affiliation(s)
- Genevra Kuziel
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
| | - Brittney N Moore
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
| | - Lisa M Arendt
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
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14
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Osorio-Conles Ó, Olbeyra R, Vidal J, Ibarzabal A, Balibrea JM, de Hollanda A. Expression of Adipose Tissue Extracellular Matrix-Related Genes Predicts Weight Loss after Bariatric Surgery. Cells 2023; 12:cells12091262. [PMID: 37174662 PMCID: PMC10177079 DOI: 10.3390/cells12091262] [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: 02/12/2023] [Revised: 04/12/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND We evaluated the association between white adipose tissue parameters before bariatric surgery (BS) and post-surgical weight loss, with an especial focus on extracellular matrix (ECM) gene expression. METHODS Paired samples from subcutaneous (SAT) and visceral adipose tissue (VAT) were obtained from 144 subjects undergoing BS. The association between total body weight loss (%TBWL) at 12 months after BS and the histological characteristics and gene expression of selected genes in SAT and VAT was analyzed. RESULTS Fat cell area, size-frequency distribution, and fibrosis in SAT or VAT prior to surgery were not associated with %TBWL. On the contrary, the SAT expression of COL5A1 and COL6A3 was associated with %TBWL after BS (both p < 0.001), even after adjusting for age, gender, baseline BMI, and type 2 diabetes status (T2D). Furthermore, in logistic regression analyses, the expression of these genes was significantly associated with insufficient WL (IWL = TBWL < 20%) after BS (respectively, p = 0.030 and p = 0.031). Indeed, in ROC analysis, the prediction of IWL based on sex, age, BMI, T2D, and the type of surgery (AUC = 0.71) was significantly improved with the addition of SAT-COL5A1 gene expression (AUC = 0.88, Z = 2.13, p = 0.032). CONCLUSIONS Our data suggest that the expression of SAT ECM-related genes may help explain the variability in TBWL following BS.
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Affiliation(s)
- Óscar Osorio-Conles
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Monforte de Lemos Ave. 3-5, 28029 Madrid, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Rosselló Street 149, 08036 Barcelona, Spain
| | - Romina Olbeyra
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Rosselló Street 149, 08036 Barcelona, Spain
| | - Josep Vidal
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Monforte de Lemos Ave. 3-5, 28029 Madrid, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Rosselló Street 149, 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Ainitze Ibarzabal
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - José María Balibrea
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Ana de Hollanda
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Rosselló Street 149, 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Monforte de Lemos Ave. 3-5, 28029 Madrid, Spain
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15
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Meen AJ, Doncheva AI, Böttcher Y, Dankel SN, Hoffmann A, Blüher M, Fernø J, Mellgren G, Ghosh A, Sun W, Dong H, Noé F, Wolfrum C, Pejler G, Dalen KT, Kolset SO. Obesity Is Associated with Distorted Proteoglycan Expression in Adipose Tissue. Int J Mol Sci 2023; 24:ijms24086884. [PMID: 37108048 PMCID: PMC10138342 DOI: 10.3390/ijms24086884] [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: 02/13/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Proteoglycans are central components of the extracellular matrix (ECM) and binding partners for inflammatory chemokines. Morphological differences in the ECM and increased inflammation are prominent features of the white adipose tissues in patients with obesity. The impact of obesity and weight loss on the expression of specific proteoglycans in adipose tissue is not well known. This study aimed to investigate the relationship between adiposity and proteoglycan expression. We analyzed transcriptomic data from two human bariatric surgery cohorts. In addition, RT-qPCR was performed on adipose tissues from female and male mice fed a high-fat diet. Both visceral and subcutaneous adipose tissue depots were analyzed. Adipose mRNA expression of specific proteoglycans, proteoglycan biosynthetic enzymes, proteoglycan partner molecules, and other ECM-related proteins were altered in both human cohorts. We consistently observed more profound alterations in gene expression of ECM targets in the visceral adipose tissues after surgery (among others VCAN (p = 0.000309), OGN (p = 0.000976), GPC4 (p = 0.00525), COL1A1 (p = 0.00221)). Further, gene analyses in mice revealed sex differences in these two tissue compartments in obese mice. We suggest that adipose tissue repair is still in progress long after surgery, which may reflect challenges in remodeling increased adipose tissues. This study can provide the basis for more mechanistic studies on the role of proteoglycans in adipose tissues in obesity.
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Affiliation(s)
- Astri J Meen
- Department of Medical Biology, UIT The Arctic University of Norway, 9019 Tromsø, Norway
| | | | - Yvonne Böttcher
- EpiGen, Medical Division, Akershus University Hospital, 1474 Nordbyhagen, Norway
- Department of Endocrinology, Division of Medicine, Akershus University Hospital, 1478 Lørenskog, Norway
| | - Simon N Dankel
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5020 Bergen, Norway
| | - Anne Hoffmann
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, 04103 Leipzig, Germany
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Johan Fernø
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5020 Bergen, Norway
| | - Gunnar Mellgren
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5020 Bergen, Norway
| | - Adhideb Ghosh
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Wenfei Sun
- Institute of Food, Nutrition and Health, ETH Zurich, 8092 Schwerzenbach, Switzerland
| | - Hua Dong
- Institute of Food, Nutrition and Health, ETH Zurich, 8092 Schwerzenbach, Switzerland
| | - Falko Noé
- Institute of Food, Nutrition and Health, ETH Zurich, 8092 Schwerzenbach, Switzerland
| | - Christian Wolfrum
- Institute of Food, Nutrition and Health, ETH Zurich, 8092 Schwerzenbach, Switzerland
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, 75123 Uppsala, Sweden
| | | | - Svein O Kolset
- Department of Nutrition, University of Oslo, 0316 Oslo, Norway
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16
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Adipose tissue function and insulin sensitivity in syndromic obesity of Bardet-Biedl syndrome. Int J Obes (Lond) 2023; 47:382-390. [PMID: 36807608 DOI: 10.1038/s41366-023-01280-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/22/2023]
Abstract
BACKGROUND Bardet-Biedl syndrome (BBS) is a rare autosomal recessive syndromic obesity of childhood onset among many other features. To date, the excess risk of metabolic complications of severe early-onset obesity in BBS remains controversial. In-depth investigation of adipose tissue structure and function with detailed metabolic phenotype has not been investigated yet. OBJECTIVE To investigate adipose tissue function in BBS. DESIGN A prospective cross-sectional study. MAIN OUTCOME MEASURE To determine if there are differences in insulin resistance, metabolic profile, adipose tissue function and gene expression in patients with BBS compared to BMI-matched polygenic obese controls. METHOD 9 adults with BBS and 10 controls were recruited from the national centre for BBS, Birmingham, UK. An in-depth study of adipose tissue structure and function along with insulin sensitivity was performed using hyperinsulinemic-euglycemic clamp studies, adipose tissue microdialysis, histology and RNA sequencing, and measurement of circulating adipokines and inflammatory biomarkers. RESULTS Adipose tissue structure, gene expression and in vivo functional analysis between BBS and polygenic obesity cohorts were similar. Using hyperinsulinemic-euglycemic clamp and surrogate markers of insulin resistance, we found no significant differences in insulin sensitivity between BBS and obese controls. Furthermore, no significant changes were noted in an array of adipokines, cytokines, pro-inflammatory markers and adipose tissue RNA transcriptomic. CONCLUSION Although childhood-onset extreme obesity is a feature of BBS, detailed studies of insulin sensitivity and adipose tissue structure and function are similar to common polygenic obesity. This study adds to the literature by suggesting that it is the quality and quantity of adiposity not the duration that drives the metabolic phenotype.
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Cardia L, de Cleva R, Ferreira L, Gadducci AV, Estabile P, Santos Silva PR, Greve J, Santo MA. Postoperative Resting Metabolic Rate and Successful Weight Loss After Roux-en-Y Gastric Bypass. Obes Surg 2023; 33:1178-1183. [PMID: 36808386 DOI: 10.1007/s11695-023-06498-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/21/2023]
Abstract
OBJECTIVE To analyze whether changes in RMR 6 months after RYGB could be a predictor of weight loss on late follow-up. METHODS Prospective study of 45 individuals submitted to RYGB in a university tertiary care hospital. Body composition was evaluated by bioelectrical impedance analysis and RMR by indirect calorimetry before (T0), 6 (T1), and 36 months (T2) after surgery. RESULTS RMR/day was lower in T1 (1.552 ± 275 kcal/day) than in T0 (1734 ± 372 kcal/day; p < 0.001) with a return to similar values at T2 (1.795 ± 396 kcal/day; p < 0.001). In T0, there was no correlation between RMR/kg and body composition. In T1, there was a negative correlation between RMR and BW, BMI, and % FM, and a positive correlation with % FFM. The results in T2 were similar to T1. There was a significant increase in RMR/kg between T0, T1, and T2 (13.6 ± 2.2 kcal/kg, 16.9 ± 2.7 kcal/kg, and 19.9 ± 3.4 kcal/kg) in the total group and according to gender. Eighty percent of the patients who had increased RMR/kg ≥ 2 kcal at T1 achieved > 50% EWL in T2, particularly in women (odds ratio: 27.09, p < 0.037). CONCLUSIONS The increase in RMR/kg after RYGB is a major factor related to a satisfactory % excess weight loss on late follow-up.
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Affiliation(s)
- Lilian Cardia
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil.
| | - Roberto de Cleva
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil
| | - Leandro Ferreira
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil
| | - Alexandre Vieira Gadducci
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil
| | - Priscila Estabile
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil
| | | | - Julia Greve
- Orthopedics and Traumatology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Marco Aurelio Santo
- Gastroenterology Department, University of São Paulo Medical School, Av Dr Eneas de Carvalho Aguiar, 255, 9 Andar- ICHC, São Paulo, CEP: 05403-000, Brazil
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Sun K, Li X, Scherer PE. Extracellular Matrix (ECM) and Fibrosis in Adipose Tissue: Overview and Perspectives. Compr Physiol 2023; 13:4387-4407. [PMID: 36715281 PMCID: PMC9957663 DOI: 10.1002/cphy.c220020] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Fibrosis in adipose tissue is a major driver of obesity-related metabolic dysregulation. It is characterized by an overaccumulation of extracellular matrix (ECM) during unhealthy expansion of adipose tissue in response to over nutrition. In obese adipose-depots, hypoxia stimulates multiple pro-fibrotic signaling pathways in different cell populations, thereby inducing the overproduction of the ECM components, including collagens, noncollagenous proteins, and additional enzymatic components of ECM synthesis. As a consequence, local fibrosis develops. The result of fibrosis-induced mechanical stress not only triggers cell necrosis and inflammation locally in adipose tissue but also leads to system-wide lipotoxicity and insulin resistance. A better understanding of the mechanisms underlying the obesity-induced fibrosis will help design therapeutic approaches to reduce or reverse the pathological changes associated with obese adipose tissue. Here, we aim to summarize the major advances in the field, which include newly identified fibrotic factors, cell populations that contribute to the fibrosis in adipose tissue, as well as novel mechanisms underlying the development of fibrosis. We further discuss the potential therapeutic strategies to target fibrosis in adipose tissue for the treatment of obesity-linked metabolic diseases and cancer. © 2023 American Physiological Society. Compr Physiol 13:4387-4407, 2023.
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Affiliation(s)
- Kai Sun
- Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Xin Li
- Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Philipp E. Scherer
- Department of Internal Medicine, Touchstone Diabetes Center, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA
- Department of Cell Biology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA
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Torregrosa C, Chorin F, Beltran EEM, Neuzillet C, Cardot-Ruffino V. Physical Activity as the Best Supportive Care in Cancer: The Clinician's and the Researcher's Perspectives. Cancers (Basel) 2022; 14:5402. [PMID: 36358820 PMCID: PMC9655932 DOI: 10.3390/cancers14215402] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 08/11/2023] Open
Abstract
Multidisciplinary supportive care, integrating the dimensions of exercise alongside oncological treatments, is now regarded as a new paradigm to improve patient survival and quality of life. Its impact is important on the factors that control tumor development, such as the immune system, inflammation, tissue perfusion, hypoxia, insulin resistance, metabolism, glucocorticoid levels, and cachexia. An increasing amount of research has been published in the last years on the effects of physical activity within the framework of oncology, marking the appearance of a new medical field, commonly known as "exercise oncology". This emerging research field is trying to determine the biological mechanisms by which, aerobic exercise affects the incidence of cancer, the progression and/or the appearance of metastases. We propose an overview of the current state of the art physical exercise interventions in the management of cancer patients, including a pragmatic perspective with tips for routine practice. We then develop the emerging mechanistic views about physical exercise and their potential clinical applications. Moving toward a more personalized, integrated, patient-centered, and multidisciplinary management, by trying to understand the different interactions between the cancer and the host, as well as the impact of the disease and the treatments on the different organs, this seems to be the most promising method to improve the care of cancer patients.
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Affiliation(s)
- Cécile Torregrosa
- Oncologie Digestive, Département d’Oncologie Médicale Institut Curie, Université Versailles Saint-Quentin—Université Paris Saclay, 35, rue Dailly, 92210 Saint-Cloud, France
- Département de Chirurgie Digestive et Oncologique, Hôpital Universitaire Ambroise Paré, Assistance Publique-Hôpitaux de Paris, 9 avenue Charles de Gaulle, 92100 Boulogne Billancourt, France
| | - Frédéric Chorin
- Laboratoire Motricité Humaine, Expertise, Sport, Santé (LAMHESS), HEALTHY Graduate School, Université Côte d’Azur, 06205 Nice, France
- Clinique Gériatrique du Cerveau et du Mouvement, Centre Hospitalier Universitaire de Nice, Université Côte d’Azur, 06205 Nice, France
| | - Eva Ester Molina Beltran
- Oncologie Digestive, Département d’Oncologie Médicale Institut Curie, Université Versailles Saint-Quentin—Université Paris Saclay, 35, rue Dailly, 92210 Saint-Cloud, France
| | - Cindy Neuzillet
- Oncologie Digestive, Département d’Oncologie Médicale Institut Curie, Université Versailles Saint-Quentin—Université Paris Saclay, 35, rue Dailly, 92210 Saint-Cloud, France
- GERCOR, 151 rue du Faubourg Saint-Antoine, 75011 Paris, France
| | - Victoire Cardot-Ruffino
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Department of Immunology, Harvard Medical School, Boston, MA 02215, USA
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20
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Ultrasound Imaging of the Superficial Fascia in the Upper Limb: Arm and Forearm. Diagnostics (Basel) 2022; 12:diagnostics12081884. [PMID: 36010234 PMCID: PMC9406830 DOI: 10.3390/diagnostics12081884] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/26/2022] [Accepted: 07/31/2022] [Indexed: 12/29/2022] Open
Abstract
The superficial fascia has received much attention in recent years due to its important role of compartmentalizing the subcutaneous tissue. Ultrasound (US) imaging, owing to its high definition, provides the possibility of better visualizing and measuring its thickness. The aim of this study was to measure and compare, with US imaging, the thickness of superficial fascia in the arm and forearm in different regions/levels. An observational study has been performed using US imaging to measure superficial fascia thickness in the anterior and posterior regions at different levels in a sample of 30 healthy volunteers. The results for superficial fascia thickness revealed statistically significant differences (p < 0.0001) in the arm between the anterior and posterior regions; in terms of forearm, some statistically significant differences were found between regions/levels. However, in the posterior region/levels of the arm, the superficial fascia was thicker (0.53 ± 0.10 mm) than in the forearm (0.41 ± 0.10 mm); regarding the anterior regions/levels, the superficial fascia of the arm (0.40 ± 0.10 mm) was not statistically different than the forearm (0.40 ± 0.12 mm). In addition, the intra-rater reliability was good (ICC2,k: 0.88). US helps to visualize and assess the superficial fascia inside the subcutaneous tissue, improving the diagnosis of fascial dysfunction, and one of the Us parameters to reliably assess is the thickness in different regions and levels.
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Abstract
Adipose tissue is a complex heterogeneous tissue composed of adipocytes along with several non-adipocyte populations, including blood, stromal, endothelial, and progenitor cells, as well as extracellular matrix (ECM) components. As obesity progresses, the adipose tissue expands dynamically through adipocyte hypertrophy and/or hyperplasia. This expansion requires continuous ECM remodeling to properly accommodate the size increase as well as functional changes. Upon reaching a hypertrophic threshold beyond the adipocyte buffering capacity, excess ECM components are deposited, causing fibrosis and ultimately resulting in unhealthy metabolic maladaptation. These complex ECM remodeling processes in adipose tissues are regulated by the local environment, several key mediators, and genetic factors that are closely linked to insulin sensitivity. It is crucial to understand how adipocytes interact with nonadipocyte populations and various mediators (i.e., immune cells, ECM components, and adipokines) during these processes. This mini-review provides an overview of the latest research into the biology of obesity-induced adipose tissue fibrosis and its related clinical manifestations, providing insight for further studies aimed at controlling metabolic syndrome and its comorbidities.
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Affiliation(s)
- Yutaka Hasegawa
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Iwate Medical University, Yahaba, Japan
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22
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Lecoutre S, Lambert M, Drygalski K, Dugail I, Maqdasy S, Hautefeuille M, Clément K. Importance of the Microenvironment and Mechanosensing in Adipose Tissue Biology. Cells 2022; 11:cells11152310. [PMID: 35954152 PMCID: PMC9367348 DOI: 10.3390/cells11152310] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/19/2022] [Accepted: 07/23/2022] [Indexed: 11/16/2022] Open
Abstract
The expansion of adipose tissue is an adaptive mechanism that increases nutrient buffering capacity in response to an overall positive energy balance. Over the course of expansion, the adipose microenvironment undergoes continual remodeling to maintain its structural and functional integrity. However, in the long run, adipose tissue remodeling, typically characterized by adipocyte hypertrophy, immune cells infiltration, fibrosis and changes in vascular architecture, generates mechanical stress on adipose cells. This mechanical stimulus is then transduced into a biochemical signal that alters adipose function through mechanotransduction. In this review, we describe the physical changes occurring during adipose tissue remodeling, and how they regulate adipose cell physiology and promote obesity-associated dysfunction in adipose tissue.
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Affiliation(s)
- Simon Lecoutre
- Nutrition and Obesities: Systemic Approaches Research Group (Nutri-Omics), Sorbonne Université, INSERM, F-75013 Paris, France; (S.L.); (K.D.); (I.D.)
| | - Mélanie Lambert
- Labex Inflamex, Université Sorbonne Paris Nord, INSERM, F-93000 Bobigny, France;
| | - Krzysztof Drygalski
- Nutrition and Obesities: Systemic Approaches Research Group (Nutri-Omics), Sorbonne Université, INSERM, F-75013 Paris, France; (S.L.); (K.D.); (I.D.)
| | - Isabelle Dugail
- Nutrition and Obesities: Systemic Approaches Research Group (Nutri-Omics), Sorbonne Université, INSERM, F-75013 Paris, France; (S.L.); (K.D.); (I.D.)
| | - Salwan Maqdasy
- Department of Medicine (H7), Karolinska Institutet Hospital, C2-94, 14186 Stockholm, Sweden;
| | - Mathieu Hautefeuille
- Laboratoire de Biologie du Développement (UMR 7622), IBPS, Sorbonne Université, F-75005 Paris, France;
| | - Karine Clément
- Nutrition and Obesities: Systemic Approaches Research Group (Nutri-Omics), Sorbonne Université, INSERM, F-75013 Paris, France; (S.L.); (K.D.); (I.D.)
- Assistance Publique Hôpitaux de Paris, Nutrition Department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, F-75013 Paris, France
- Correspondence: or
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Abstract
Obesity is a complex, multifactorial, and relapsing disease whose prevalence has tripled during the last decades and whose incidence is expected to further increase. For these reasons, obesity is considered as a real pandemic, deeply burdening the global health-care systems. From a pathophysiological standpoint obesity is the result of a chronic-positive energy balance which in turn leads to an excessive accumulation of lipids, not only within the adipose organ, but also in different cytotypes, a phenomenon leading to lipotoxicity that deeply compromises several cellular and organs functions. Obesity is therefore associated with over 200 medical complications, including insulin resistance and type 2 diabetes mellitus (T2DM) and represents the fifth leading cause of death worldwide. In this review, we describe the main pathophysiological mechanisms linking obesity-induced adipose organ dysfunction to insulin resistance and T2DM.
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Cacciottolo TM, Henning E, Keogh JM, Bel Lassen P, Lawler K, Bounds R, Ahmed R, Perdikari A, Mendes de Oliveira E, Smith M, Godfrey EM, Johnson E, Hodson L, Clément K, van der Klaauw AA, Farooqi IS. Obesity Due to Steroid Receptor Coactivator-1 Deficiency Is Associated With Endocrine and Metabolic Abnormalities. J Clin Endocrinol Metab 2022; 107:e2532-e2544. [PMID: 35137184 PMCID: PMC9113786 DOI: 10.1210/clinem/dgac067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Genetic variants affecting the nuclear hormone receptor coactivator steroid receptor coactivator, SRC-1, have been identified in people with severe obesity and impair melanocortin signaling in cells and mice. As a result, obese patients with SRC-1 deficiency are being treated with a melanocortin 4 receptor agonist in clinical trials. OBJECTIVE Here, our aim was to comprehensively describe and characterize the clinical phenotype of SRC-1 variant carriers to facilitate diagnosis and clinical management. METHODS In genetic studies of 2462 people with severe obesity, we identified 23 rare heterozygous variants in SRC-1. We studied 29 adults and 18 children who were SRC-1 variant carriers and performed measurements of metabolic and endocrine function, liver imaging, and adipose tissue biopsies. Findings in adult SRC-1 variant carriers were compared to 30 age- and body mass index (BMI)-matched controls. RESULTS The clinical spectrum of SRC-1 variant carriers included increased food intake in children, normal basal metabolic rate, multiple fractures with minimal trauma (40%), persistent diarrhea, partial thyroid hormone resistance, and menorrhagia. Compared to age-, sex-, and BMI-matched controls, adult SRC-1 variant carriers had more severe adipose tissue fibrosis (46.2% vs 7.1% respectively, P = .03) and a suggestion of increased liver fibrosis (5/13 cases vs 2/13 in controls, odds ratio = 3.4), although this was not statistically significant. CONCLUSION SRC-1 variant carriers exhibit hyperphagia in childhood, severe obesity, and clinical features of partial hormone resistance. The presence of adipose tissue fibrosis and hepatic fibrosis in young patients suggests that close monitoring for the early development of obesity-associated metabolic complications is warranted.
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Affiliation(s)
- Tessa M Cacciottolo
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Elana Henning
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Julia M Keogh
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Pierre Bel Lassen
- Sorbonne Université, INSERM, Nutrition and Obesities: Systemic Approaches (NutriOmics) Research Group and Assistance Publique hôpitaux de Paris, Nutrition Department, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Katherine Lawler
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Rebecca Bounds
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Rachel Ahmed
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Aliki Perdikari
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Edson Mendes de Oliveira
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Miriam Smith
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Edmund M Godfrey
- Department of Radiology, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - Elspeth Johnson
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital and National Institute for Health Research Oxford Biomedical Research Centre, Oxford University Hospitals Foundation Trust, Headington, Oxford OX3 7LE, UK
| | - Leanne Hodson
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital and National Institute for Health Research Oxford Biomedical Research Centre, Oxford University Hospitals Foundation Trust, Headington, Oxford OX3 7LE, UK
| | - Karine Clément
- Sorbonne Université, INSERM, Nutrition and Obesities: Systemic Approaches (NutriOmics) Research Group and Assistance Publique hôpitaux de Paris, Nutrition Department, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Agatha A van der Klaauw
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
| | - I Sadaf Farooqi
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome-MRC Institute of Metabolic Science, Box 289, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK
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Lecoutre S, Merabtene F, El Hachem EJ, Gamblin C, Rouault C, Sokolovska N, Soula H, Lai WS, Blackshear PJ, Clément K, Dugail I. Beta-hydroxybutyrate dampens adipose progenitors' profibrotic activation through canonical Tgfβ signaling and non-canonical ZFP36-dependent mechanisms. Mol Metab 2022; 61:101512. [PMID: 35550189 PMCID: PMC9123279 DOI: 10.1016/j.molmet.2022.101512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND/PURPOSE Adipose tissue contains progenitor cells that contribute to beneficial tissue expansion when needed by de novo adipocyte formation (classical white or beige fat cells with thermogenic potential). However, in chronic obesity, they can exhibit an activated pro-fibrotic, extracellular matrix (ECM)-depositing phenotype that highly aggravates obesity-related adipose tissue dysfunction. METHODS Given that progenitors' fibrotic activation and fat cell browning appear to be antagonistic cell fates, we have examined the anti-fibrotic potential of pro-browning agents in an obesogenic condition. RESULTS In obese mice fed a high fat diet, thermoneutral housing, which induces brown fat cell dormancy, increases the expression of ECM gene programs compared to conventionally raised animals, indicating aggravation of obesity-related tissue fibrosis at thermoneutrality. In a model of primary cultured murine adipose progenitors, we found that exposure to β-hydroxybutyrate selectively reduced Tgfβ-dependent profibrotic responses of ECM genes like Ctgf, Loxl2 and Fn1. This effect is observed in both subcutaneous and visceral-derived adipose progenitors, as well as in 3T3-L1 fibroblasts. In 30 patients with obesity eligible for bariatric surgery, those with higher circulating β-hydroxybutyrate levels have lower subcutaneous adipose tissue fibrotic scores. Mechanistically, β-hydroxybutyrate limits Tgfβ-dependent collagen accumulation and reduces Smad2-3 protein expression and phosphorylation in visceral progenitors. Moreover, β-hydroxybutyrate induces the expression of the ZFP36 gene, encoding a post-transcriptional regulator that promotes the degradation of mRNA by binding to AU-rich sites within 3'UTRs. Importantly, complete ZFP36 deficiency in a mouse embryonic fibroblast line from null mice, or siRNA knock-down in primary progenitors, indicate that ZFP36 is required for β-hydroxybutyrate anti-fibrotic effects. CONCLUSION These data unravel the potential of β-hydroxybutyrate to limit adipose tissue matrix deposition, a finding that might exploited in an obesogenic context.
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Affiliation(s)
- Simon Lecoutre
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Fatiha Merabtene
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Elie-Julien El Hachem
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Camille Gamblin
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Christine Rouault
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Nataliya Sokolovska
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | - Hedi Soula
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France
| | | | | | - Karine Clément
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France,Assistance Publique-Hôpitaux de Paris, Nutrition Department, Pitié-Salpêtrière Hospital, Paris 75013. France
| | - Isabelle Dugail
- Sorbonne Université, INSERM, Nutrition and obesities: systemic approach research group, Nutriomics, Paris F-75013. France,Corresponding author.
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Pellegrinelli V, Rodriguez-Cuenca S, Rouault C, Figueroa-Juarez E, Schilbert H, Virtue S, Moreno-Navarrete JM, Bidault G, Vázquez-Borrego MC, Dias AR, Pucker B, Dale M, Campbell M, Carobbio S, Lin YH, Vacca M, Aron-Wisnewsky J, Mora S, Masiero MM, Emmanouilidou A, Mukhopadhyay S, Dougan G, den Hoed M, Loos RJF, Fernández-Real JM, Chiarugi D, Clément K, Vidal-Puig A. Dysregulation of macrophage PEPD in obesity determines adipose tissue fibro-inflammation and insulin resistance. Nat Metab 2022; 4:476-494. [PMID: 35478031 DOI: 10.1038/s42255-022-00561-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 03/18/2022] [Indexed: 02/02/2023]
Abstract
Resulting from impaired collagen turnover, fibrosis is a hallmark of adipose tissue (AT) dysfunction and obesity-associated insulin resistance (IR). Prolidase, also known as peptidase D (PEPD), plays a vital role in collagen turnover by degrading proline-containing dipeptides but its specific functional relevance in AT is unknown. Here we show that in human and mouse obesity, PEPD expression and activity decrease in AT, and PEPD is released into the systemic circulation, which promotes fibrosis and AT IR. Loss of the enzymatic function of PEPD by genetic ablation or pharmacological inhibition causes AT fibrosis in mice. In addition to its intracellular enzymatic role, secreted extracellular PEPD protein enhances macrophage and adipocyte fibro-inflammatory responses via EGFR signalling, thereby promoting AT fibrosis and IR. We further show that decreased prolidase activity is coupled with increased systemic levels of PEPD that act as a pathogenic trigger of AT fibrosis and IR. Thus, PEPD produced by macrophages might serve as a biomarker of AT fibro-inflammation and could represent a therapeutic target for AT fibrosis and obesity-associated IR and type 2 diabetes.
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Affiliation(s)
- V Pellegrinelli
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK.
| | - S Rodriguez-Cuenca
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Cambridge University Nanjing Centre of Technology and Innovation, Nanjing, P. R. China
| | - C Rouault
- Sorbonne University, INSERM, NutriOmique Research Unit, Paris, France
| | - E Figueroa-Juarez
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - H Schilbert
- Genetics and Genomics of Plants, Centre for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - S Virtue
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - J M Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition, Girona Biomedical Research Institute (IDIBGI), University Hospital of Girona Dr Josep Trueta, Girona, Spain
- Department of Medicine, University of Girona, Girona, Spain
- CIBERobn Pathophysiology of Obesity and Nutrition, Institut of Salud Carlos III, Madrid, Spain
| | - G Bidault
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - M C Vázquez-Borrego
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Cordoba, Spain
| | - A R Dias
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - B Pucker
- Genetics and Genomics of Plants, Centre for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, Bielefeld, Germany
- Evolution and Diversity, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - M Dale
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - M Campbell
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Cambridge University Nanjing Centre of Technology and Innovation, Nanjing, P. R. China
| | - S Carobbio
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Centro de Investigacion Principe Felipe, Valencia, Spain
| | - Y H Lin
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - M Vacca
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
- Insterdisciplinary Department of Medicine, Università degli Studi di Bari 'Aldo Moro', Bari, Italy
| | - J Aron-Wisnewsky
- Sorbonne University, INSERM, NutriOmique Research Unit, Paris, France
- Assistance-Publique Hôpitaux de Paris, Nutrition department, Pitié-Salpêtrière hospital, Paris, France
| | - S Mora
- Dept Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine, University of Barcelona (IBUB), Barcelona, Spain
| | - M M Masiero
- The Beijer Laboratory and Department of Immunology, Genetics and Pathology, Uppsala University and SciLifeLab, Uppsala, Sweden
| | - A Emmanouilidou
- The Beijer Laboratory and Department of Immunology, Genetics and Pathology, Uppsala University and SciLifeLab, Uppsala, Sweden
| | - S Mukhopadhyay
- MRC Centre for Transplantation Peter Gorer Department of Immunobiology School of Immunology & Microbial Sciences King's College, London, UK
| | - G Dougan
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- Division of Infectious Diseases, Department of Medicine, University of Cambridge, Cambridge, UK
| | - M den Hoed
- The Beijer Laboratory and Department of Immunology, Genetics and Pathology, Uppsala University and SciLifeLab, Uppsala, Sweden
| | - R J F Loos
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
| | - J M Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition, Girona Biomedical Research Institute (IDIBGI), University Hospital of Girona Dr Josep Trueta, Girona, Spain
- Department of Medicine, University of Girona, Girona, Spain
- CIBERobn Pathophysiology of Obesity and Nutrition, Institut of Salud Carlos III, Madrid, Spain
| | - D Chiarugi
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK
| | - K Clément
- Sorbonne University, INSERM, NutriOmique Research Unit, Paris, France
- Assistance-Publique Hôpitaux de Paris, Nutrition department, Pitié-Salpêtrière hospital, Paris, France
| | - A Vidal-Puig
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK.
- Cambridge University Nanjing Centre of Technology and Innovation, Nanjing, P. R. China.
- Centro de Investigacion Principe Felipe, Valencia, Spain.
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Bel Lassen P, Nori N, Bedossa P, Genser L, Aron-Wisnewsky J, Poitou C, Surabattula R, Juul Nielsen M, Asser Karsdal M, Julie Leeming D, Schuppan D, Clément K. Fibrogenesis Marker PRO-C3 Is Higher in Advanced Liver Fibrosis and Improves in Patients Undergoing Bariatric Surgery. J Clin Endocrinol Metab 2022; 107:e1356-e1366. [PMID: 34905051 DOI: 10.1210/clinem/dgab897] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Serum propeptides of type III and type VI collagen (PRO-C3 and PRO-C6) are elevated in advanced nonalcoholic fatty liver disease (NAFLD), but their value in patients with severe obesity and their evolution after bariatric surgery (BS) is unknown. It is unclear if these markers of fibrogenesis are affected by adipose tissue fibrosis (ATF). OBJECTIVE We studied the association of PRO-C3 and PRO-C6 with liver fibrosis before BS, examined their evolution after BS, and evaluated how much patients' ATF contribute to their levels. METHODS Serum PRO-C3 and PRO-C6 were measured in 158 BS patients and compared with liver, subcutaneous, and omental adipose tissue histology obtained during surgery. PRO-C3 and PRO-C6 levels of 63 patients were determined in follow-up at 3 and 12 months post-BS. RESULTS Patients in the highest quartile of PRO-C3 had a higher risk of advanced liver fibrosis (stage F3-4; odds ratio 5.8; 95% CI [1.5-29.9]; P = 0.017) vs the lowest quartile (adjustment for age, gender, and BMI). PRO-C3 was positively correlated with markers of insulin resistance and liver enzymes. After BS, PRO-C3 levels decreased in patients with high baseline liver fibrosis. This decrease correlated with improvement of metabolic and liver parameters. PRO-C6 was not related to stage of liver fibrosis. ATF did not correlate with PRO-C3 or PRO-C6 levels at baseline or after BS. CONCLUSION PRO-C3 was associated with advanced liver fibrosis in patients with severe obesity, and decreased after BS, without being affected by ATF. These data suggest that BS prominently eliminates drivers of hepatic fibrogenesis in NAFLD.
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Affiliation(s)
- Pierre Bel Lassen
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Nicole Nori
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
| | | | - Laurent Genser
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
- Assistance Publique Hôpitaux de Paris, Department of Digestive Surgery, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Judith Aron-Wisnewsky
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Christine Poitou
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, 75013 Paris, France
| | - Rambabu Surabattula
- Institute of Translational Immunology and Research Center for Immune Therapy, Mainz University Medical Center, 55131 Mainz, Germany
| | | | | | | | - Detlef Schuppan
- Institute of Translational Immunology and Research Center for Immune Therapy, Mainz University Medical Center, 55131 Mainz, Germany
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Karine Clément
- Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), F-75013, Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, 75013 Paris, France
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28
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Sarsenbayeva A, Pereira MJ, Nandi Jui B, Ahmed F, Dipta P, Fanni G, Almby K, Kristófi R, Hetty S, Eriksson JW. Excess glucocorticoid exposure contributes to adipose tissue fibrosis which involves macrophage interaction with adipose precursor cells. Biochem Pharmacol 2022; 198:114976. [PMID: 35202577 DOI: 10.1016/j.bcp.2022.114976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/17/2022] [Accepted: 02/17/2022] [Indexed: 12/12/2022]
Abstract
Chronic exposure to elevated glucocorticoid levels, as seen in patients with Cushing's syndrome, can induce adipose tissue fibrosis. Macrophages play a pivotal role in adipose tissue remodelling. We used the synthetic glucocorticoid analogue dexamethasone to address glucocorticoid effects on adipose tissue fibrosis, in particular involving macrophage to preadipocyte communication. We analysed the direct effects of dexamethasone at a supra-physiological level, 0.3 µM, on gene expression of pro-fibrotic markers in human subcutaneous adipose tissue. The effects of dexamethasone on the differentiation of human SGBS preadipocytes were assessed in the presence or absence of THP1-macrophages or macrophage-conditioned medium. We measured the expression of different pro-fibrotic factors, including α-smooth muscle actin gene (ACTA2) and protein (α-SMA). Dexamethasone increased the expression of pro-fibrotic genes, e.g. CTGF, COL6A3, FN1, in adipose tissue. Macrophages abolished preadipocyte differentiation and increased the expression of the ACTA2 gene and α-SMA protein in preadipocytes after differentiation. Exposure to dexamethasone during differentiation reduced adipogenesis in preadipocytes, and elevated the expression of pro-fibrotic genes. Moreover, dexamethasone added together with macrophages further increased ACTA2 and α-SMA expression in preadipocytes, making them more myofibroblast-like. Cells differentiated in the presence of conditioned media from macrophages pretreated with or without dexamethasone had a higher expression of profibrotic genes compared to control cells. Our data suggest that macrophages promote adipose tissue fibrosis by directly interfering with preadipocyte differentiation and stimulating gene expression of pro-fibrotic factors. Excess glucocorticoid exposure also has pro-fibrotic effect on adipose tissue, but this requires the presence of macrophages.
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Affiliation(s)
- Assel Sarsenbayeva
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Maria J Pereira
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Bipasha Nandi Jui
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Fozia Ahmed
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Priya Dipta
- Department of Pharmacology, Faculty of Medicine, Hadassah Medical Centre, Jerusalem, Israel
| | - Giovanni Fanni
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Kristina Almby
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Robin Kristófi
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Susanne Hetty
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden
| | - Jan W Eriksson
- Department of Medical Sciences, Clinical Diabetes and Metabolism, Uppsala University, Uppsala, Sweden.
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29
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Pincu Y, Yoel U, Haim Y, Makarenkov N, Maixner N, Shaco-Levy R, Bashan N, Dicker D, Rudich A. Assessing Obesity-Related Adipose Tissue Disease (OrAD) to Improve Precision Medicine for Patients Living With Obesity. Front Endocrinol (Lausanne) 2022; 13:860799. [PMID: 35574032 PMCID: PMC9098964 DOI: 10.3389/fendo.2022.860799] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/15/2022] [Indexed: 12/21/2022] Open
Abstract
Obesity is a heterogenous condition that affects the life and health of patients to different degrees and in different ways. Yet, most approaches to treat obesity are not currently prescribed, at least in a systematic manner, based on individual obesity sub-phenotypes or specifically-predicted health risks. Adipose tissue is one of the most evidently affected tissues in obesity. The degree of adipose tissue changes - "adiposopathy", or as we propose to relate to herein as Obesity-related Adipose tissue Disease (OrAD), correspond, at least cross-sectionally, to the extent of obesity-related complications inflicted on an individual patient. This potentially provides an opportunity to better personalize anti-obesity management by utilizing the information that can be retrieved by assessing OrAD. This review article will summarize current knowledge on histopathological OrAD features which, beyond cross-sectional analyses, had been shown to predict future obesity-related endpoints and/or the response to specific anti-obesity interventions. In particular, the review explores adipocyte cell size, adipose tissue inflammation, and fibrosis. Rather than highly-specialized methods, we emphasize standard pathology laboratory approaches to assess OrAD, which are readily-available in most clinical settings. We then discuss how OrAD assessment can be streamlined in the obesity/weight-management clinic. We propose that current studies provide sufficient evidence to inspire concerted efforts to better explore the possibility of predicting obesity related clinical endpoints and response to interventions by histological OrAD assessment, in the quest to improve precision medicine in obesity.
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Affiliation(s)
- Yair Pincu
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK, United States
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Uri Yoel
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
- The Endocrinology Service, Soroka University Medical Center, Beer-Sheva, Israel
| | - Yulia Haim
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nataly Makarenkov
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
| | - Nitzan Maixner
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
| | - Ruthy Shaco-Levy
- Institute of Pathology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nava Bashan
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
| | - Dror Dicker
- Department of Internal Medicine D, Hasharon Hospital, Rabin Medical Center, Petah Tikva, Israel
- Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel
- *Correspondence: Assaf Rudich, ; Dror Dicker,
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- *Correspondence: Assaf Rudich, ; Dror Dicker,
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30
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Marcelin G, Clément K. The multifaceted progenitor fates in healthy or unhealthy adipose tissue during obesity. Rev Endocr Metab Disord 2021; 22:1111-1119. [PMID: 34105090 DOI: 10.1007/s11154-021-09662-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2021] [Indexed: 10/21/2022]
Abstract
While obesity is defined as an excessive fat accumulation conferring a risk to metabolic health, increased adipose mass by itself does not fully explain obesity's propensity to promote metabolic alterations. Adipose tissue regulates multiple processes critical for energy homeostasis and its dysfunction favors the development and perpetuation of metabolic diseases. Obesity drives inflammatory leucocyte infiltration in adipose tissue and fibrotic transformation of the fat depots. Both features associate with metabolic alterations such as impaired glucose control and resistance to fat mass loss. In this context, adipose progenitors, an heterogenous resident population of mesenchymal stromal cells, display functions important to shape healthy or unhealthy adipose tissue expansion. We, here, outline the current understanding of adipose progenitor biology in the context of obesity-induced adipose tissue remodeling.
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Affiliation(s)
- Geneviève Marcelin
- Nutrition and Obesities : Systemic Approaches (NutriOmics, UMRS U1269), Sorbonne Universités, INSERM, Paris, France
| | - Karine Clément
- Nutrition and Obesities : Systemic Approaches (NutriOmics, UMRS U1269), Sorbonne Universités, INSERM, Paris, France.
- Nutrition Department, Assistance Publique Hôpitaux de Paris (AP-HP), Hôpital Pitié-Salpêtrière, CRNH Ile de France, 75013, Paris, France.
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31
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Impact of Bariatric Surgery on Adipose Tissue Biology. J Clin Med 2021; 10:jcm10235516. [PMID: 34884217 PMCID: PMC8658722 DOI: 10.3390/jcm10235516] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 02/07/2023] Open
Abstract
Bariatric surgery (BS) procedures are actually the most effective intervention to help subjects with severe obesity achieve significant and sustained weight loss. White adipose tissue (WAT) is increasingly recognized as the largest endocrine organ. Unhealthy WAT expansion through adipocyte hypertrophy has pleiotropic effects on adipocyte function and promotes obesity-associated metabolic complications. WAT dysfunction in obesity encompasses an altered adipokine secretome, unresolved inflammation, dysregulated autophagy, inappropriate extracellular matrix remodeling and insufficient angiogenic potential. In the last 10 years, accumulating evidence suggests that BS can improve the WAT function beyond reducing the fat depot sizes. The causal relationships between improved WAT function and the health benefits of BS merits further investigation. This review summarizes the current knowledge on the short-, medium- and long-term outcomes of BS on the WAT composition and function.
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32
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Abstract
Obesity is a chronic and progressive process affecting whole-body energy balance and is associated with comorbidities development. In addition to increased fat mass, obesity induces white adipose tissue (WAT) inflammation and fibrosis, leading to local and systemic metabolic dysfunctions, such as insulin resistance (IR). Accordingly, limiting inflammation or fibrosis deposition may improve IR and glucose homeostasis. Although no targeted therapy yet exists to slow or reverse adipose tissue fibrosis, a number of findings have clarified the underlying cellular and molecular mechanisms. In this review, we highlight adipose tissue remodeling events shown to be associated with fibrosis deposition, with a focus on adipose progenitors involved in obesity-induced healthy as well as unhealthy WAT expansion. Expected final online publication date for the Annual Review of Physiology, Volume 84 is February 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Geneviève Marcelin
- INSERM, Nutrition and Obesities: Systemic Approach (NutriOmics) Research Unit, UMRS U1269, Sorbonne Université, Paris, France; ,
| | | | - Karine Clément
- INSERM, Nutrition and Obesities: Systemic Approach (NutriOmics) Research Unit, UMRS U1269, Sorbonne Université, Paris, France; , .,Nutrition Department, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
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33
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The cyclin dependent kinase inhibitor Roscovitine prevents diet-induced metabolic disruption in obese mice. Sci Rep 2021; 11:20365. [PMID: 34645915 PMCID: PMC8514475 DOI: 10.1038/s41598-021-99871-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/28/2021] [Indexed: 12/16/2022] Open
Abstract
Most strategies to treat obesity-related disorders have involved prevention of diet-induced weight gain in lean mice. Treatment of obese individuals will require therapies that reverse the detrimental effects of excess body weight. Cyclin-dependent kinases have been shown to contribute to obesity and its adverse complications. Here, we show that roscovitine; a an orally available cyclin-dependent kinase inhibitor; given to male mice during the last six weeks of a 19-week high fat diet, reduced weight gain and prevented accompanying insulin resistance, hepatic steatosis, visceral adipose tissue (eWAT) inflammation/fibrosis as well as restored insulin secretion and enhanced whole body energy expenditure. Proteomics and phosphoproteomics analysis of eWAT demonstrated that roscovitine suppressed expression of peptides and phosphopeptides linked to inflammation and extracellular matrix proteins. It also identified 17 putative protein kinases perturbed by roscovitine, including CMGC kinases, AGC kinases and CAMK kinases. Pathway enrichment analysis showed that lipid metabolism, TCA cycle, fatty acid beta oxidation and creatine biosynthesis are enriched following roscovitine treatment. For brown adipose tissue (BAT), analysis of upstream kinases controlling the phosphoproteome revealed two major kinase groups, AGC and CMGC kinases. Among the top enriched pathways were insulin signaling, regulation of lipolysis in adipocytes, thyroid hormone signaling, thermogenesis and cAMP-PKG signaling. We conclude that roscovitine is effective at preventing prolonged diet-induced metabolic disruption and restoring mitochondrial activity in BAT and eWAT.
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34
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Muraca E, Oltolini A, Binda A, Pizzi M, Ciardullo S, Manzoni G, Zerbini F, Bianconi E, Cannistraci R, Perra S, Pizzi P, Lattuada G, Perseghin G, Villa M. Metabolic and Psychological Features are Associated with Weight Loss 12 Months After Sleeve Gastrectomy. J Clin Endocrinol Metab 2021; 106:e3087-e3097. [PMID: 33705552 DOI: 10.1210/clinem/dgab161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Indexed: 12/13/2022]
Abstract
CONTEXT Laparoscopic sleeve gastrectomy (LSG) is a recognized effective procedure of bariatric surgery, but a poor response in weight loss may still represent a clinical problem. To date there are no validated predictors useful to better perform patient selection. OBJECTIVE To establish the association of baseline anthropometric, metabolic, and psychologic features with the percent total weight loss (%TWL) and percent excess weight loss (%EWL) 12 months after surgery. DESIGN Retrospective longitudinal analysis of a set of data about obese patients attending the outpatient service of a single obesity center from June 2016 to June 2019. PATIENTS A total of 106 obese patients underwent LSG with presurgery evaluation and follow-up at 12 months after surgery. MAIN OUTCOME Weight loss 12 months after LSG. RESULTS Patients who achieved a %TWL higher than the observed median (≥34%) were younger, with a lower fasting plasma glucose and glycated hemoglobin, with a lower prevalence of hypertension and with a lower score in the impulsiveness scale, compared with patients with a %TWL < 34%. Similar findings were found when %EWL was considered. Multivariable stepwise regression analysis showed that younger age, lower impulsiveness, higher-than-normal urinary free cortisol, and lower HbA1c were associated with higher %TWL, explaining about 31.5% of the weight loss. CONCLUSION Metabolic and psychologic features at baseline were independently associated with weight loss and explained a non-negligible effect on the response to LSG. These data suggest that careful metabolic and psychologic profiling could help in sharper indications and personalized pre- and postsurgical follow-up protocols in candidates for LSG.
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Affiliation(s)
- Emanuele Muraca
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Alice Oltolini
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Alberto Binda
- Clinical Psychology; Policlinico di Monza, 20900 Monza, Italy
| | - Mattia Pizzi
- Centro per lo Studio, la Ricerca e la terapia dell'Obesità, Policlinico di Monza, 20900 Monza, Italy
| | - Stefano Ciardullo
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
- Department of Medicine and Surgery, Università degli Studi di Milano Bicocca; 20900 Monza, Italy
| | - Giuseppina Manzoni
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Francesca Zerbini
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Eleonora Bianconi
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Rosa Cannistraci
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
- Department of Medicine and Surgery, Università degli Studi di Milano Bicocca; 20900 Monza, Italy
| | - Silvia Perra
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Pietro Pizzi
- Centro per lo Studio, la Ricerca e la terapia dell'Obesità, Policlinico di Monza, 20900 Monza, Italy
| | - Guido Lattuada
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
| | - Gianluca Perseghin
- Department of Medicine and Rehabilitation; Policlinico di Monza, 20900 Monza, Italy
- Department of Medicine and Surgery, Università degli Studi di Milano Bicocca; 20900 Monza, Italy
| | - Matteo Villa
- Clinical Psychology; Policlinico di Monza, 20900 Monza, Italy
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Liu F, He J, Liu B, Zhang P, Wang H, Sun X, Chu X, Guan W, Feng W, Bi Y, Zhu D. Association of Omental Adipocyte Hypertrophy and Fibrosis with Human Obesity and Type 2 Diabetes. Obesity (Silver Spring) 2021; 29:976-984. [PMID: 33943025 DOI: 10.1002/oby.23155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 02/04/2021] [Accepted: 02/07/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Morphological alterations including adipocyte hypertrophy and fibrosis deposition are important surrogate markers of visceral adipose tissue function, but the relationships between these morphological changes and type 2 diabetes mellitus (T2DM) and impaired insulin sensitivity are poorly defined. METHODS Omental adipose tissue was obtained from 66 individuals with obesity but without T2DM (OB group), 93 individuals with both obesity and T2DM (T2DM group), and 15 individuals with normal BMI and normal glucose tolerance (NGT group). Adipocyte diameter and volume were measured through pathological section analysis. Pericellular and perilobular fibrosis was determined through picrosirius red staining and immunochemistry, while fibrosis-related genes were tested through gene expression and hydroxyproline content. RESULTS Compared with the NGT and OB groups, individuals from the T2DM group displayed increased adipocyte diameter and volume levels. Increased adipocyte size (diameter and volume) was positively associated with hyperglycemia and insulin resistance and inversely correlated with insulin sensitivity (using the Matsuda whole-body insulin sensitivity index assessment of insulin sensitivity) and β-cell function (disposition index 30 and disposition index 120). The fibrosis levels of the OB group were the highest out of the three groups, whereas the fibrosis levels of T2DM individuals were lower than the OB group but higher than the NGT group. Although fibrosis was negatively correlated with T2DM, fibrosis deposition was not remarkably associated with impaired systemic insulin sensitivity and glucose metabolism. CONCLUSIONS Compared with fibrosis deposition, adipocyte hypertrophy is more closely associated with T2DM and impaired systemic insulin sensitivity.
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Affiliation(s)
- Fangcen Liu
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
- Department of Pathology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Jielei He
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Boxun Liu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pengzi Zhang
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Hongdong Wang
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xitai Sun
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xuehui Chu
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Wenxian Guan
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Wenhuan Feng
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Yan Bi
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Dalong Zhu
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
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36
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Aasbrenn M, Svendstrup M, Schnurr TM, Lindqvist Hansen D, Worm D, Balslev-Harder M, Grarup N, Burgdorf KS, Vestergaard H, Pedersen O, Ängquist L, Fenger M, Sørensen TIA, Madsbad S, Hansen T. Genetic markers of abdominal obesity and weight loss after gastric bypass surgery. PLoS One 2021; 16:e0252525. [PMID: 34048505 PMCID: PMC8162622 DOI: 10.1371/journal.pone.0252525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 05/17/2021] [Indexed: 11/18/2022] Open
Abstract
Background Weight loss after bariatric surgery varies widely between individuals, partly due to genetic differences. In addition, genetic determinants of abdominal obesity have been shown to attenuate weight loss after dietary intervention with special attention paid to the rs1358980-T risk allele in the VEGFA locus. Here we aimed to test if updated genetic risk scores (GRSs) for adiposity measures and the rs1358980-T risk allele are linked with weight loss following gastric bypass surgery. Methods Five hundred seventy six patients with morbid obesity underwent Roux-en-Y gastric bypass. A GRS for BMI and a GRS for waist-hip-ratio adjusted for BMI (proxy for abdominal obesity), respectively, were constructed. All patients were genotyped for the rs1358980-T risk allele. Associations between the genetic determinants and weight loss after bariatric surgery were evaluated. Results The GRS for BMI was not associated with weight loss (β = -2.0 kg/100 risk alleles, 95% CI -7.5 to 3.3, p = 0.45). Even though the GRS for abdominal obesity was associated with an attenuated weight loss response adjusted for age, sex and center (β = -14.6 kg/100 risk alleles, 95% CI -25.4 to -3.8, p = 0.008), it was not significantly associated with weight loss after adjustment for baseline BMI (β = -7.9 kg/100 risk alleles, 95% CI -17.5 to 1.6, p = 0.11). Similarly, the rs1358980-T risk allele was not significantly associated with weight loss (β = -0.8 kg/risk allele, 95% CI -2.2 to 0.6, p = 0.25). Discussion GRSs for adiposity derived from large meta-analyses and the rs1358980-T risk allele in the VEGFA locus did not predict weight loss after gastric bypass surgery. The association between a GRS for abdominal obesity and the response to bariatric surgery may be dependent on the association between the GRS and baseline BMI.
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Affiliation(s)
- Martin Aasbrenn
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Geriatric Research Unit, Department of Geriatrics, Bispebjerg-Frederiksberg University Hospital, Copenhagen, Denmark
- * E-mail:
| | - Mathilde Svendstrup
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Endocrinology, Bispebjerg-Frederiksberg University Hospital, Copenhagen, Denmark
- Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Theresia M. Schnurr
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Dorte Worm
- Department of Medicine, Amager Hospital, Copenhagen, Denmark
| | - Marie Balslev-Harder
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niels Grarup
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Henrik Vestergaard
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Bornholms Hospital, Rønne, Denmark
| | - Oluf Pedersen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Ängquist
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mogens Fenger
- Department of Clinical Biochemistry, Hvidovre University Hospital, Copenhagen, Denmark
| | - Thorkild I. A. Sørensen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Sten Madsbad
- Department of Endocrinology, Hvidovre University Hospital, Copenhagen, Denmark
| | - Torben Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Herbst KL, Kahn LA, Iker E, Ehrlich C, Wright T, McHutchison L, Schwartz J, Sleigh M, Donahue PM, Lisson KH, Faris T, Miller J, Lontok E, Schwartz MS, Dean SM, Bartholomew JR, Armour P, Correa-Perez M, Pennings N, Wallace EL, Larson E. Standard of care for lipedema in the United States. Phlebology 2021; 36:779-796. [PMID: 34049453 PMCID: PMC8652358 DOI: 10.1177/02683555211015887] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background Lipedema is a loose connective tissue disease predominantly in women identified by increased nodular and fibrotic adipose tissue on the buttocks, hips and limbs that develops at times of hormone, weight and shape change including puberty, pregnancy, and menopause. Lipedema tissue may be very painful and can severely impair mobility. Non-lipedema obesity, lymphedema, venous disease, and hypermobile joints are comorbidities. Lipedema tissue is difficult to reduce by diet, exercise, or bariatric surgery. Methods This paper is a consensus guideline on lipedema written by a US committee following the Delphi Method. Consensus statements are rated for strength using the GRADE system. Results Eighty-five consensus statements outline lipedema pathophysiology, and medical, surgical, vascular, and other therapeutic recommendations. Future research topics are suggested. Conclusion These guidelines improve the understanding of the loose connective tissue disease, lipedema, to advance our understanding towards early diagnosis, treatments, and ultimately a cure for affected individuals.
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Affiliation(s)
- Karen L Herbst
- Department of Medicine, University of Arizona, Total Lipedema Care, Beverly Hills, CA and Tucson, AZ, USA.,The US Standard of Care Committee.,Total Lipedema Care, Los Angeles, CA, USA
| | - Linda Anne Kahn
- The US Standard of Care Committee.,Lymphatic Therapy Services, San Diego, CA, USA
| | - Emily Iker
- The US Standard of Care Committee.,Lymphedema Center, Santa Monica, CA, USA
| | - Chuck Ehrlich
- The US Standard of Care Committee.,Lymph Notes, San Francisco, CA, USA
| | - Thomas Wright
- The US Standard of Care Committee.,Lipedema Surgical Solutions, O' Fallon, MO, USA
| | - Lindy McHutchison
- The US Standard of Care Committee.,Carolina Vein Center, Durham, NC, USA
| | - Jaime Schwartz
- The US Standard of Care Committee.,Total Lipedema Care, Los Angeles, CA, USA
| | - Molly Sleigh
- The US Standard of Care Committee.,Lighthouse Lymphedema Network, Atlanta, GA, USA; Centura Health, Colorado Springs, CO, USA
| | - Paula Mc Donahue
- The US Standard of Care Committee.,Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kathleen H Lisson
- The US Standard of Care Committee.,Solace Massage and Mindfulness, San Diego, CA, USA
| | - Tami Faris
- The US Standard of Care Committee.,Independent Contractor, Kansas City, KS, USA
| | - Janis Miller
- The US Standard of Care Committee.,Olathe Health, Olathe, KS, USA
| | - Erik Lontok
- The US Standard of Care Committee.,Barth Syndrome Foundation, Larchmont, NY, USA
| | - Michael S Schwartz
- The US Standard of Care Committee.,Pasadena Plastic Surgery, Pasadena, CA, USA
| | - Steven M Dean
- The US Standard of Care Committee.,The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - Polly Armour
- The US Standard of Care Committee.,Fat Disorders Resource Society, Laurel, MD, USA
| | | | - Nicholas Pennings
- The US Standard of Care Committee.,Campbell University School of Osteopathic Medicine, Buies Creek, NC, USA
| | - Edely L Wallace
- The US Standard of Care Committee.,Yogamatrix Studio, Orlando, FL, USA
| | - Ethan Larson
- The US Standard of Care Committee.,Larson Plastic Surgery, Tucson, AZ, USA
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Lopez-Perez D, Redruello-Romero A, Garcia-Rubio J, Arana C, Garcia-Escudero LA, Tamayo F, Puentes-Pardo JD, Moreno-SanJuan S, Salmeron J, Blanco A, Galvez J, Leon J, Carazo Á. In Patients With Obesity, the Number of Adipose Tissue Mast Cells Is Significantly Lower in Subjects With Type 2 Diabetes. Front Immunol 2021; 12:664576. [PMID: 34093556 PMCID: PMC8177010 DOI: 10.3389/fimmu.2021.664576] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/05/2021] [Indexed: 12/15/2022] Open
Abstract
Type 2 diabetes (T2D) is a rising global health problem mainly caused by obesity and a sedentary lifestyle. In healthy individuals, white adipose tissue (WAT) has a relevant homeostatic role in glucose metabolism, energy storage, and endocrine signaling. Mast cells contribute to these functions promoting WAT angiogenesis and adipogenesis. In patients with T2D, inflammation dramatically impacts WAT functioning, which results in the recruitment of several leukocytes, including monocytes, that enhance this inflammation. Accordingly, the macrophages population rises as the WAT inflammation increases during the T2D status worsening. Since mast cell progenitors cannot arrive at WAT, the amount of WAT mast cells depends on how the new microenvironment affects progenitor and differentiated mast cells. Here, we employed a flow cytometry-based approach to analyze the number of mast cells from omental white adipose tissue (o-WAT) and subcutaneous white adipose tissue (s-WAT) in a cohort of 100 patients with obesity. Additionally, we measured the number of mast cell progenitors in a subcohort of 15 patients. The cohort was divided in three groups: non-T2D, pre-T2D, and T2D. Importantly, patients with T2D have a mild condition (HbA1c <7%). The number of mast cells and mast cell progenitors was lower in patients with T2D in both o-WAT and s-WAT in comparison to subjects from the pre-T2D and non-T2D groups. In the case of mast cells in o-WAT, there were statistically significant differences between non-T2D and T2D groups (p = 0.0031), together with pre-T2D and T2D groups (p=0.0097). However, in s-WAT, the differences are only between non-T2D and T2D groups (p=0.047). These differences have been obtained with patients with a mild T2D condition. Therefore, little changes in T2D status have a huge impact on the number of mast cells in WAT, especially in o-WAT. Due to the importance of mast cells in WAT physiology, their decrease can reduce the capacity of WAT, especially o-WAT, to store lipids and cause hypoxic cell deaths that will trigger inflammation.
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Affiliation(s)
- David Lopez-Perez
- Department of Pharmacology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Anaïs Redruello-Romero
- Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | | | - Carlos Arana
- Endocrinology and Nutrition Unit, Virgen de las Nieves University Hospital, Granada, Spain
| | - Luis A Garcia-Escudero
- Department of Statistics and Operative Research, Faculty of Sciences, University of Valladolid, Valladolid, Spain
| | | | - Jose D Puentes-Pardo
- Department of Pharmacology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Sara Moreno-SanJuan
- Cytometry and Microscopy Research Service, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Javier Salmeron
- Gastroenterology Unit, San Cecilio University Hospital, Granada, Spain
| | - Armando Blanco
- Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain
| | - Julio Galvez
- Department of Pharmacology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain.,Centro de Investigación Biomédica En Red para Enfermedades Hepáticas y Digestivas (CIBER-EHD), Center for Biomedical Research, University of Granada, Granada, Spain
| | - Josefa Leon
- Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Ángel Carazo
- Research Unit, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain.,Clinical Management Unit of Digestive Disease, San Cecilio University Hospital, Granada, Spain
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Bouazizi K, Zarai M, Marquet F, Aron-Wisnewsky J, Clément K, Redheuil A, Kachenoura N. Adipose tissue fibrosis assessed by high resolution ex vivo MRI as a hallmark of tissue alteration in morbid obesity. Quant Imaging Med Surg 2021; 11:2162-2168. [PMID: 33936996 DOI: 10.21037/qims-20-879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
To determine whether magnetic resonance imaging (MRI) when used in an optimal ex vivo setting can help detecting and quantifying the 3D fibrosis fraction in human subcutaneous adipose tissue (SAT) samples, as compared to histology. This prospective observational study was approved by our institutional review board 3D MRI acquisitions were performed at 4.0 T (Bruker) on XX human SAT samples (around 1 cm3) collected from biopsy in morbidly obese patients. Such acquisitions included saturation-recovery T1 mapping (spatial resolution: 200 µm, acquisition time: ~16 minutes) and DIXON imaging (spatial resolution: 200 µm, acquisition time: ~20 minutes). After MRI, histological quantification of fibrosis was performed using picrosirius staining. T1 maps were clustered based on a k-means algorithm allowing quantification of fibrosis within the adipose tissue and percentage of fibrosis over the entire sample volume was calculated. Fat maps were computed from DIXON in-phase and out-of-phase images. The 3D MRI fibrosis percentage within the SAT samples were comprised between 6% and 15%. Excellent correlations and levels of agreement were observed between single slice MRI and histology (r=0.9, P=0.08) and between 3D MRI and histology in terms fibrosis percentages within SAT samples (r=0.9, P=0.01). High Field ex vivo MRI was able to quantify fibrosis in human SAT samples with high agreement with histology and moreover to provide 3D SAT fibrosis quantification avoiding histological sampling errors.
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Affiliation(s)
- Khaoula Bouazizi
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Sorbonne Université, Laboratoire d'Imagerie Biomédicale (LIB), Paris, France
| | - Mohamed Zarai
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Florian Marquet
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Sorbonne Université, INSERM, Nutrition and Obesities; approches systémiques (NutriOmique), Pitié-Salpêtrière Hospital, Nutrition department, Paris, France
| | - Judith Aron-Wisnewsky
- Sorbonne Université, INSERM, Nutrition and Obesities; approches systémiques (NutriOmique), Pitié-Salpêtrière Hospital, Nutrition department, Paris, France.,Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, Paris, France
| | - Karine Clément
- Sorbonne Université, INSERM, Nutrition and Obesities; approches systémiques (NutriOmique), Pitié-Salpêtrière Hospital, Nutrition department, Paris, France.,Assistance Publique Hôpitaux de Paris, Nutrition department, CRNH Ile-de-France, Pitié-Salpêtrière Hospital, Paris, France
| | - Alban Redheuil
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Sorbonne Université, Laboratoire d'Imagerie Biomédicale (LIB), Paris, France.,Unité d'Imagerie Cardiovasculaire et Thoracique (ICT), Pitié-Salpêtrière Hospital, Paris, France
| | - Nadjia Kachenoura
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Sorbonne Université, Laboratoire d'Imagerie Biomédicale (LIB), Paris, France
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40
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Gorwood J, Bourgeois C, Pourcher V, Pourcher G, Charlotte F, Mantecon M, Rose C, Morichon R, Atlan M, Le Grand R, Desjardins D, Katlama C, Fève B, Lambotte O, Capeau J, Béréziat V, Lagathu C. The Integrase Inhibitors Dolutegravir and Raltegravir Exert Proadipogenic and Profibrotic Effects and Induce Insulin Resistance in Human/Simian Adipose Tissue and Human Adipocytes. Clin Infect Dis 2021; 71:e549-e560. [PMID: 32166319 DOI: 10.1093/cid/ciaa259] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/09/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Although some integrase strand transfer inhibitors (INSTIs) promote peripheral and central adipose tissue/weight gain in people with human immunodeficiency virus (PHIV), the underlying mechanism has not been identified. Here, we used human and simian models to assess the impact of INSTIs on adipose tissue phenotype and function. METHODS Adipocyte size and fibrosis were determined in biopsies of subcutaneous and visceral adipose tissue (SCAT and VAT, respectively) from 14 noninfected macaques and 19 PHIV treated or not treated with an INSTI. Fibrosis, adipogenesis, oxidative stress, mitochondrial function, and insulin sensitivity were assessed in human proliferating or adipocyte-differentiated adipose stem cells after long-term exposure to dolutegravir or raltegravir. RESULTS We observed elevated fibrosis, adipocyte size, and adipogenic marker expression in SCAT and VAT from INSTI-treated noninfected macaques. Adiponectin expression was low in SCAT. Accordingly, SCAT and VAT samples from INSTI-exposed patients displayed higher levels of fibrosis than those from nonexposed patients. In vitro, dolutegravir and, to a lesser extent, raltegravir were associated with greater extracellular matrix production and lipid accumulation in adipose stem cells and/or adipocytes as observed in vivo. Despite the INSTIs' proadipogenic and prolipogenic effects, these drugs promoted oxidative stress, mitochondrial dysfunction, and insulin resistance. CONCLUSIONS Dolutegravir and raltegravir can directly impact adipocytes and adipose tissue. These INSTIs induced adipogenesis, lipogenesis, oxidative stress, fibrosis, and insulin resistance. The present study is the first to shed light on the fat modifications observed in INSTI-treated PHIV.
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Affiliation(s)
- Jennifer Gorwood
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Christine Bourgeois
- Commissariat à l'Energie Atomique, Université Paris Sud 11, Inserm U1184, Center for Immunology of Viral Infections and Autoimmune Diseases, Infectious Disease Models and Innovative Therapies Department, Fontenay-aux-Roses, France
| | - Valérie Pourcher
- Assistance publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de maladies infectieuses et tropicales, Paris, France.,Sorbonne Université-Inserm, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Paris, France
| | - Guillaume Pourcher
- Obesity Center, Institut Mutualiste Montsouris, Paris Descartes University, Paris, France
| | - Frédéric Charlotte
- Assistance publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service d'Anatomie Pathologique, Paris, France
| | - Matthieu Mantecon
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Cindy Rose
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Romain Morichon
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Michael Atlan
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France.,Assistance publique-Hôpitaux de Paris, Hôpital Tenon, Service de Chirurgie Plastique et Esthétique, Paris, France
| | - Roger Le Grand
- Commissariat à l'Energie Atomique, Université Paris Sud 11, Inserm U1184, Center for Immunology of Viral Infections and Autoimmune Diseases, Infectious Disease Models and Innovative Therapies Department, Fontenay-aux-Roses, France
| | - Delphine Desjardins
- Commissariat à l'Energie Atomique, Université Paris Sud 11, Inserm U1184, Center for Immunology of Viral Infections and Autoimmune Diseases, Infectious Disease Models and Innovative Therapies Department, Fontenay-aux-Roses, France
| | - Christine Katlama
- Assistance publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de maladies infectieuses et tropicales, Paris, France.,Sorbonne Université-Inserm, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Paris, France
| | - Bruno Fève
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France.,Assistance publique-Hôpitaux de Paris, Hôpital Saint-Antoine, Pathologies de la Résistance à l'Insuline et de l'Insulino-Sensibilité, Service d'Endocrinologie, Diabétologie et Reproduction, Paris, France
| | - Olivier Lambotte
- Commissariat à l'Energie Atomique, Université Paris Sud 11, Inserm U1184, Center for Immunology of Viral Infections and Autoimmune Diseases, Infectious Disease Models and Innovative Therapies Department, Fontenay-aux-Roses, France.,Assistance publique-Hôpitaux de Paris, Hôpital Bicêtre, Service de Médecine Interne et Immunologie Clinique, Kremlin-Bicêtre, France
| | - Jacqueline Capeau
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Véronique Béréziat
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
| | - Claire Lagathu
- Sorbonne Université, Inserm Unité Mixte de Recherche S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition, Paris, France
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Survey Outcomes of Lipedema Reduction Surgery in the United States. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2021; 9:e3553. [PMID: 33912372 PMCID: PMC8078351 DOI: 10.1097/gox.0000000000003553] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/01/2021] [Indexed: 11/26/2022]
Abstract
Background: Lipedema is a loose connective tissue disease affecting the limbs of women, that is difficult to lose by diet, exercise, or bariatric surgery. Publications from Europe demonstrate that lipedema reduction surgery improves quality of life for women with lipedema. There are no comparable studies in the United States (USA). The aim of this study was to collect data from women with lipedema in the USA who have undergone lipedema reduction surgery in the USA to determine if quality of life, pain, and other measures improved after lipedema reduction surgery. Methods: Subjects were recruited and consented online for a 166-item questionnaire in REDCap. In total, 148 women answered the questionnaire after undergoing lipedema reduction surgery in the USA. Significance set at P < 0.05 was determined by ANOVA, Tukey’s multiple comparison test, or paired t-test. Results: Quality of life improved in 84% and pain improved in 86% of patients. Ambulation improved most in lipedema Stage 3 (96%). Weight loss occurred in all stages by 3 months after surgery. Complications included growth of loose connective tissue within and outside treated areas, tissue fibrosis, anemia, blood clots, and lymphedema. Conclusions: Women with lipedema noticed significant benefits after lipedema reduction surgery in the USA. Prospective studies are needed to assess benefits and complications after lipedema reduction surgery in the USA.
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Does C-C Motif Chemokine Ligand 2 (CCL2) Link Obesity to a Pro-Inflammatory State? Int J Mol Sci 2021; 22:ijms22031500. [PMID: 33540898 PMCID: PMC7867366 DOI: 10.3390/ijms22031500] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022] Open
Abstract
The mechanisms of how obesity contributes to the development of cardio-metabolic diseases are not entirely understood. Obesity is frequently associated with adipose tissue dysfunction, characterized by, e.g., adipocyte hypertrophy, ectopic fat accumulation, immune cell infiltration, and the altered secretion of adipokines. Factors secreted from adipose tissue may induce and/or maintain a local and systemic low-grade activation of the innate immune system. Attraction of macrophages into adipose tissue and altered crosstalk between macrophages, adipocytes, and other cells of adipose tissue are symptoms of metabolic inflammation. Among several secreted factors attracting immune cells to adipose tissue, chemotactic C-C motif chemokine ligand 2 (CCL2) (also described as monocyte chemoattractant protein-1 (MCP-1)) has been shown to play a crucial role in adipose tissue macrophage infiltration. In this review, we aimed to summarize and discuss the current knowledge on CCL2 with a focus on its role in linking obesity to cardio-metabolic diseases.
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Geberhiwot T, Baig S, Obringer C, Girard D, Dawson C, Manolopoulos K, Messaddeq N, Bel Lassen P, Clement K, Tomlinson JW, Steeds RP, Dollfus H, Petrovsky N, Marion V. Relative Adipose Tissue Failure in Alström Syndrome Drives Obesity-Induced Insulin Resistance. Diabetes 2021; 70:364-376. [PMID: 32994277 PMCID: PMC7881858 DOI: 10.2337/db20-0647] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022]
Abstract
Obesity is a major risk factor for insulin resistance (IR) and its attendant complications. The pathogenic mechanisms linking them remain poorly understood, partly due to a lack of intermediary monogenic human phenotypes. Here, we report on a monogenic form of IR-prone obesity, Alström syndrome (ALMS). Twenty-three subjects with monogenic or polygenic obesity underwent hyperinsulinemic-euglycemic clamping with concomitant adipose tissue (AT) microdialysis and an in-depth analysis of subcutaneous AT histology. We have shown a relative AT failure in a monogenic obese cohort, a finding supported by observations in a novel conditional mouse model (Alms flin/flin ) and ALMS1-silenced human primary adipocytes, whereas selective reactivation of ALMS1 gene in AT of an ALMS conditional knockdown mouse model (Alms flin/flin ; Adipo-Cre +/- ) restores systemic insulin sensitivity and glucose tolerance. Hence, we show for the first time the relative AT failure in human obese cohorts to be a major determinant of accelerated IR without evidence of lipodystrophy. These new insights into adipocyte-driven IR may assist development of AT-targeted therapeutic strategies for diabetes.
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Affiliation(s)
- Tarekegn Geberhiwot
- Department of Diabetes, Endocrinology and Metabolism, Queen Elizabeth Hospital Birmingham, Birmingham, U.K.
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, U.K
| | - Shanat Baig
- Department of Diabetes, Endocrinology and Metabolism, Queen Elizabeth Hospital Birmingham, Birmingham, U.K
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, U.K
| | - Cathy Obringer
- INSERM, UMR_U1112, Laboratoire de Génétique Médicale, Université de Strasbourg, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Dorothée Girard
- Flinders Medical Centre, Flinders University, Bedford Park, Australia
| | - Charlotte Dawson
- Department of Diabetes, Endocrinology and Metabolism, Queen Elizabeth Hospital Birmingham, Birmingham, U.K
| | | | - Nadia Messaddeq
- Institute of Genetics and Molecular and Cellular Biology, CNRS/INSERM, Collège de France, Illkirch, France
| | - Pierre Bel Lassen
- NutriOmics Unit, INSERM, Sorbonne Université, Assistance-Publique Hôpitaux de Paris, and Nutrition Department, Pitié-Salpêtrière Hospital, Paris, France
| | - Karine Clement
- NutriOmics Unit, INSERM, Sorbonne Université, Assistance-Publique Hôpitaux de Paris, and Nutrition Department, Pitié-Salpêtrière Hospital, Paris, France
| | - Jeremy W Tomlinson
- Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, U.K
| | - Richard P Steeds
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, U.K
| | - Hélène Dollfus
- INSERM, UMR_U1112, Laboratoire de Génétique Médicale, Université de Strasbourg, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
- Service de Génétique Médicale et CARGO, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Nikolai Petrovsky
- Flinders Medical Centre, Flinders University, Bedford Park, Australia
- Vaxine Pty Ltd, Bedford Park, Australia
| | - Vincent Marion
- INSERM, UMR_U1112, Ciliopathies Modeling and Associated Therapies Group, Laboratoire de Génétique Médicale, Fédération de Medecine Translationelle de Strasbourg, Strasbourg, France
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Rouault C, Marcelin G, Adriouch S, Rose C, Genser L, Ambrosini M, Bichet JC, Zhang Y, Marquet F, Aron-Wisnewsky J, Poitou C, André S, Dérumeaux G, Guerre-Millo M, Clément K. Senescence-associated β-galactosidase in subcutaneous adipose tissue associates with altered glycaemic status and truncal fat in severe obesity. Diabetologia 2021; 64:240-254. [PMID: 33125520 DOI: 10.1007/s00125-020-05307-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 09/01/2020] [Indexed: 01/02/2023]
Abstract
AIM/HYPOTHESIS Altered adipose tissue secretory profile contributes to insulin resistance and type 2 diabetes in obesity. Preclinical studies have identified senescent cells as a cellular source of proinflammatory factors in adipose tissue of obese mice. In humans, potential links with obesity comorbidities are poorly defined. Here, we investigated adipose tissue senescent status and relationships with metabolic complications in human obesity. METHODS The study includes a prospective cohort of 227 individuals with severe obesity. A photometric method was used to quantify senescence-associated β-galactosidase (SA-β-gal) activity in paired subcutaneous and omental adipose tissue biopsies obtained during gastric surgery. Gene and secretory profiling was performed in adipose tissue biopsies and in human primary pre-adipocytes in the presence or absence of senolytic drugs targeting senescent cells. Participants were phenotyped for anthropometric and bioclinical variables, metabolic complications and gastric surgery-induced improvement to address relationships with adipose tissue SA-β-gal. RESULTS SA-β-gal activity was sevenfold higher in subcutaneous than in omental adipose tissue and not associated with BMI or chronological age. Several factors, including insulin-like growth factor binding protein 3 (IGFBP3), plasminogen activator inhibitor 1 (PAI1), C-C motif chemokine ligand 2 (CCL2) and IL-6, were upregulated in subcutaneous adipose tissue in relation with SA-β-gal (p for linear trend across tertiles <0.05) and in pre-adipocytes cultured with inflammatory macrophage conditioned media. Senolytic treatment reduced SA-β-gal staining and normalised these alterations. In the whole population, subcutaneous adipose tissue SA-β-gal activity was positively associated with serum leptin, markers of insulin resistance and increased trunk fat mass. Metabolic complications, including type 2 diabetes and dyslipidaemia, were more prevalent in patients with high levels of SA-β-gal, but improved with bariatric surgery whatever the initial adipose tissue senescent status. CONCLUSIONS/INTERPRETATION This study highlights a phenotype of senescence in adipose tissue of severely obese individuals, which characterises prominently subcutaneous fat depots. Subcutaneous adipose tissue senescence is significantly linked to altered glucose metabolism and body fat distribution. Elimination of senescent cells through senolytic treatment could alleviate metabolic complications in severely obese people. Graphical abstract.
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Affiliation(s)
- Christine Rouault
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Geneviève Marcelin
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Solia Adriouch
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Cindy Rose
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Laurent Genser
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
- Assistance Publique Hôpitaux de Paris, Visceral Surgery Department, Pitié-Salpêtrière Hospital, Paris, France
| | - Marc Ambrosini
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Jean-Christophe Bichet
- Assistance Publique Hôpitaux de Paris, Service de Chirurgie et Cancérologie Gynécologique et Mammaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Yanyan Zhang
- Inserm U955, Université Paris-Est Créteil (UPEC), Créteil, France
| | - Florian Marquet
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Judith Aron-Wisnewsky
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition Department, CRNH Ile de France, Pitié-Salpêtrière Hospital, Paris, France
| | - Christine Poitou
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition Department, CRNH Ile de France, Pitié-Salpêtrière Hospital, Paris, France
| | - Sébastien André
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Geneviève Dérumeaux
- Inserm U955, Université Paris-Est Créteil (UPEC), Créteil, France
- Assistance Publique Hôpitaux de Paris, Department of Cardiology, Henri Mondor Hospital, DHU-ATVB, Créteil, France
| | - Michèle Guerre-Millo
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France
| | - Karine Clément
- Sorbonne Université, Inserm, Nutrition and Obesities: Systemic Approaches (Nutriomics), Paris, France.
- Assistance Publique Hôpitaux de Paris, Nutrition Department, CRNH Ile de France, Pitié-Salpêtrière Hospital, Paris, France.
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Weight Loss After Sleeve Gastrectomy: Does Type 2 Diabetes Status Impact Weight and Body Composition Trajectories? Obes Surg 2020; 31:1046-1054. [PMID: 33146869 DOI: 10.1007/s11695-020-05075-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 01/22/2023]
Abstract
INTRODUCTION/ PURPOSE Sleeve gastrectomy (SG), the most frequently performed bariatric procedure, induces marked weight-loss, but with high inter-individual variability. Since type 2 diabetes (T2D) negatively impacts weight-loss outcomes after Roux-en-Y gastric bypass (RYGB), we herein aimed to evaluate whether and how T2D status may influence weight-loss and body composition changes in individuals with or without T2D after SG. MATERIAL AND METHODS We retrospectively included individuals with obesity operated from SG and prospectively followed at our center: 373 patients including 152 with T2D (40%). All subjects' clinical characteristics were collected before and during 4 years of follow-up post-SG. Linear mixed models were applied to analyze weight-loss trajectories post-surgery. RESULTS Compared to individuals with obesity but no T2D, those with T2D before SG displayed lower weight-loss at 1 year (21 vs. 27% from baseline, p < 10-3). This difference was accentuated in patients with poorer glucose control (HbA1c > 7%) at baseline. Furthermore, patients with T2D underwent less favorable body composition changes at 1-year post-SG compared to individuals without T2D (% fat mass reduction: 28 vs. 37%, p < 10-3 respectively). CONCLUSION When undergoing SG, subjects with obesity and T2D who have poor pre-operative glycemic control display reduced weight-loss and less improvement in body composition compared to patients with obesity but without T2D. This result suggests that glycemic control prior to surgery is important to take into account for the outcome of bariatric surgery.
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Maixner N, Pecht T, Haim Y, Chalifa-Caspi V, Goldstein N, Tarnovscki T, Liberty IF, Kirshtein B, Golan R, Berner O, Monsonego A, Bashan N, Blüher M, Rudich A. A TRAIL-TL1A Paracrine Network Involving Adipocytes, Macrophages, and Lymphocytes Induces Adipose Tissue Dysfunction Downstream of E2F1 in Human Obesity. Diabetes 2020; 69:2310-2323. [PMID: 32732304 PMCID: PMC7576574 DOI: 10.2337/db19-1231] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 07/24/2020] [Indexed: 12/19/2022]
Abstract
Elevated expression of E2F1 in adipocyte fraction of human visceral adipose tissue (hVAT) associates with a poor cardiometabolic profile. We hypothesized that beyond directly activating autophagy and MAP3K5 (ASK)-MAP kinase signaling, E2F1 governs a distinct transcriptome that contributes to adipose tissue and metabolic dysfunction in obesity. We performed RNA sequencing of hVAT samples from age-, sex-, and BMI-matched patients, all obese, whose visceral E2F1 protein expression was either high (E2F1high) or low (E2F1low). Tumor necrosis factor superfamily (TNFSF) members, including TRAIL (TNFSF10), TL1A (TNFSF15), and their receptors, were enriched in E2F1high While TRAIL was equally expressed in adipocytes and stromal vascular fraction (SVF), TL1A was mainly expressed in SVF, and TRAIL-induced TL1A was attributed to CD4+ and CD8+ subclasses of hVAT T cells. In human adipocytes, TL1A enhanced basal and impaired insulin-inhibitable lipolysis and altered adipokine secretion, and in human macrophages it induced foam cell biogenesis and M1 polarization. Two independent human cohorts confirmed associations between TL1A and TRAIL expression in hVAT and higher leptin and IL6 serum concentrations, diabetes status, and hVAT-macrophage lipid content. Jointly, we propose an intra-adipose tissue E2F1-associated TNFSF paracrine loop engaging lymphocytes, macrophages, and adipocytes, ultimately contributing to adipose tissue dysfunction in obesity.
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Affiliation(s)
- Nitzan Maixner
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tal Pecht
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yulia Haim
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Vered Chalifa-Caspi
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nir Goldstein
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tania Tarnovscki
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Idit F Liberty
- The Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Soroka Academic Medical Center, Beer-Sheva, Israel
| | - Boris Kirshtein
- The Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Soroka Academic Medical Center, Beer-Sheva, Israel
| | - Rachel Golan
- Department of Epidemiology and Preventive Medicine, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Omer Berner
- Department of Microbiology and Immunology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Alon Monsonego
- Department of Microbiology and Immunology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nava Bashan
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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DeBari MK, Abbott RD. Adipose Tissue Fibrosis: Mechanisms, Models, and Importance. Int J Mol Sci 2020; 21:ijms21176030. [PMID: 32825788 PMCID: PMC7503256 DOI: 10.3390/ijms21176030] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023] Open
Abstract
Increases in adipocyte volume and tissue mass due to obesity can result in inflammation, further dysregulation in adipose tissue function, and eventually adipose tissue fibrosis. Like other fibrotic diseases, adipose tissue fibrosis is the accumulation and increased production of extracellular matrix (ECM) proteins. Adipose tissue fibrosis has been linked to decreased insulin sensitivity, poor bariatric surgery outcomes, and difficulty in weight loss. With the rising rates of obesity, it is important to create accurate models for adipose tissue fibrosis to gain mechanistic insights and develop targeted treatments. This article discusses recent research in modeling adipose tissue fibrosis using in vivo and in vitro (2D and 3D) methods with considerations for biomaterial selections. Additionally, this article outlines the importance of adipose tissue in treating other fibrotic diseases and methods used to detect and characterize adipose tissue fibrosis.
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Affiliation(s)
- Megan K. DeBari
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
| | - Rosalyn D. Abbott
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Correspondence:
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Goldstein N, Kezerle Y, Gepner Y, Haim Y, Pecht T, Gazit R, Polischuk V, Liberty IF, Kirshtein B, Shaco-Levy R, Blüher M, Rudich A. Higher Mast Cell Accumulation in Human Adipose Tissues Defines Clinically Favorable Obesity Sub-Phenotypes. Cells 2020; 9:cells9061508. [PMID: 32575785 PMCID: PMC7349306 DOI: 10.3390/cells9061508] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/04/2020] [Accepted: 06/18/2020] [Indexed: 02/06/2023] Open
Abstract
The identification of human obesity sub-types may improve the clinical management of patients with obesity and uncover previously unrecognized obesity mechanisms. Here, we hypothesized that adipose tissue (AT) mast cells (MC) estimation could be a mark for human obesity sub-phenotyping beyond current clinical-based stratifications, both cross-sectionally and prospectively. We estimated MC accumulation using immunohistochemistry and gene expression in abdominal visceral AT (VAT) and subcutaneous (SAT) in a human cohort of 65 persons with obesity who underwent elective abdominal (mainly bariatric) surgery, and we validated key results in two clinically similar, independent cohorts (n = 33, n = 56). AT-MC were readily detectable by immunostaining for either c-kit or tryptase and by assessing the gene expression of KIT (KIT Proto-Oncogene, Receptor Tyrosine Kinase), TPSB2 (tryptase beta 2), and CMA1 (chymase 1). Participants were characterized as VAT-MClow if the expression of both CMA1 and TPSB2 was below the median. Higher expressers of MC genes (MChigh) were metabolically healthier (lower fasting glucose and glycated hemoglobin, with higher pancreatic beta cell reserve (HOMA-β), and lower triglycerides and alkaline-phosphatase) than people with low expression (MClow). Prospectively, higher MC accumulation in VAT or SAT obtained during surgery predicted greater postoperative weight-loss response to bariatric surgery. Jointly, high AT-MC accumulation may be used to clinically define obesity sub-phenotypes, which are associated with a “healthier” cardiometabolic risk profile and a better weight-loss response to bariatric surgery.
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Affiliation(s)
- Nir Goldstein
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (N.G.); (Y.H.); (T.P.)
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine and Sylvan Adams Sports Institute Tel Aviv University, Tel-Aviv 6997801, Israel;
| | - Yarden Kezerle
- Institute of Pathology, Soroka University Medical Center Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel; (Y.K.); (R.S.-L.)
| | - Yftach Gepner
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine and Sylvan Adams Sports Institute Tel Aviv University, Tel-Aviv 6997801, Israel;
| | - Yulia Haim
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (N.G.); (Y.H.); (T.P.)
| | - Tal Pecht
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (N.G.); (Y.H.); (T.P.)
| | - Roi Gazit
- The Shraga Segal Department of Microbiology Immunology and Genetics Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel;
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Vera Polischuk
- Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel; (V.P.); (I.F.L.); (B.K.)
| | - Idit F. Liberty
- Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel; (V.P.); (I.F.L.); (B.K.)
| | - Boris Kirshtein
- Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel; (V.P.); (I.F.L.); (B.K.)
| | - Ruthy Shaco-Levy
- Institute of Pathology, Soroka University Medical Center Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel; (Y.K.); (R.S.-L.)
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, 04103 Leipzig, Germany;
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (N.G.); (Y.H.); (T.P.)
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Correspondence:
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49
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Marcelin G, Silveira ALM, Martins LB, Ferreira AV, Clément K. Deciphering the cellular interplays underlying obesity-induced adipose tissue fibrosis. J Clin Invest 2020; 129:4032-4040. [PMID: 31498150 DOI: 10.1172/jci129192] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Obesity originates from an imbalance between caloric intake and energy expenditure that promotes adipose tissue expansion, which is necessary to buffer nutrient excess. Patients with higher visceral fat mass are at a higher risk of developing severe complications such as type 2 diabetes and cardiovascular and liver diseases. However, increased fat mass does not fully explain obesity's propensity to promote metabolic diseases. With chronic obesity, adipose tissue undergoes major remodeling, which can ultimately result in unresolved chronic inflammation leading to fibrosis accumulation. These features drive local tissue damage and initiate and/or maintain multiorgan dysfunction. Here, we review the current understanding of adipose tissue remodeling with a focus on obesity-induced adipose tissue fibrosis and its relevance to clinical manifestations.
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Affiliation(s)
- Geneviève Marcelin
- Nutrition and Obesities: Systemic Approaches (NutriOmics, UMRS U1269), INSERM, Sorbonne Université, Paris, France
| | - Ana Letícia M Silveira
- Nutrition and Obesities: Systemic Approaches (NutriOmics, UMRS U1269), INSERM, Sorbonne Université, Paris, France.,Immunometabolism, Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Laís Bhering Martins
- Nutrition and Obesities: Systemic Approaches (NutriOmics, UMRS U1269), INSERM, Sorbonne Université, Paris, France.,Immunometabolism, Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Adaliene Vm Ferreira
- Immunometabolism, Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Karine Clément
- Nutrition and Obesities: Systemic Approaches (NutriOmics, UMRS U1269), INSERM, Sorbonne Université, Paris, France.,Nutrition Department, Hôpital Pitié-Salpêtrière, Assistance Publique Hôpitaux de Paris, Paris, France
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50
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Velázquez-Fernández D, Sánchez H, Monraz F, Zanela OO, Cabra HA, Pantoja JP, Sierra M, Mosti M, Herrera MF. Development of an Interactive Outcome Estimation Tool for Laparoscopic Roux-en-Y Gastric Bypass in Mexico Based on a Cohort of 1002 Patients. Obes Surg 2020; 29:2878-2885. [PMID: 31104284 DOI: 10.1007/s11695-019-03929-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) is one of the most commonly performed bariatric procedures. Considering significant differences between populations around the world, surgical outcomes may vary widely. The aim of the study was to develop an educational patient-specific interactive application that may estimate the potential outcomes of LRYGB in the Mexican population. METHODS A database with 76 different variables from 1002 patients who underwent LRYGB at two Mexican Institutions between 1992 and 2014 and had a minimum of 6-month follow-up was analyzed. Descriptive and inferential statistics, as well as a multivariate regression analysis, were performed for the primary analysis. Results were based on four statistical models obtained from the cohort outcomes. A tool was designed to provide estimates of absolute weight loss (AWL) and resolution of four major comorbidities: type 2 diabetes (T2D), high blood pressure (HBP), hypercholesterolemia, and the obstructive syndrome of sleep apnea (OSAS). RESULTS There were 353 males (35.2%) and 649 females (64.8%) with a mean age of 41.9 ± 12.1 years and a mean preoperative BMI of 45.3 ± 7.9 kg/m2. Mean AWL at 2 years was 39.02 ± 12.7 kg. Mean accumulative percentage of resolution for T2D, HBP, and dyslipidemias at the same time period was 78%, 66.2%, and 84.7%, respectively. Based on these results, the educational tool was developed. CONCLUSIONS We were able to develop an interactive estimation application to provide a population-based guidance for potential outcomes of LRYGB. This might be useful not only for health professionals but also for patients interested in learning potential outcomes in specific circumstances.
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Affiliation(s)
- David Velázquez-Fernández
- Endocrine and Advanced Laparoscopic Surgery Unit, Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Hugo Sánchez
- Clinic for Nutrition and Obesity, ABC Medical Center, Mexico CIty, Mexico
| | - Fernando Monraz
- Endocrine and Advanced Laparoscopic Surgery Unit, Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Olivo Omar Zanela
- Health Economics & Market Access, Johnson & Johnson Medical, Mexico CIty, Mexico
| | - Hermilo Arturo Cabra
- Health Economics & Market Access, Johnson & Johnson Medical, Mexico CIty, Mexico
| | - Juan Pablo Pantoja
- Endocrine and Advanced Laparoscopic Surgery Unit, Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Mauricio Sierra
- Endocrine and Advanced Laparoscopic Surgery Unit, Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Maureen Mosti
- Clinic for Nutrition and Obesity, ABC Medical Center, Mexico CIty, Mexico
| | - Miguel F Herrera
- Endocrine and Advanced Laparoscopic Surgery Unit, Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico. .,Clinic for Nutrition and Obesity, ABC Medical Center, Mexico CIty, Mexico.
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