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Liu SH, Shangguan ZS, Maitiaximu P, Li ZP, Chen XX, Li CD. Estrogen restores disordered lipid metabolism in visceral fat of prediabetic mice. World J Diabetes 2024; 15:988-1000. [PMID: 38766434 PMCID: PMC11099359 DOI: 10.4239/wjd.v15.i5.988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/26/2024] [Accepted: 03/11/2024] [Indexed: 05/10/2024] Open
Abstract
BACKGROUND Visceral obesity is increasingly prevalent among adolescents and young adults and is commonly recognized as a risk factor for type 2 diabetes. Estrogen [17β-estradiol (E2)] is known to offer protection against obesity via diverse me-chanisms, while its specific effects on visceral adipose tissue (VAT) remain to be fully elucidated. AIM To investigate the impact of E2 on the gene expression profile within VAT of a mouse model of prediabetes. METHODS Metabolic parameters were collected, encompassing body weight, weights of visceral and subcutaneous adipose tissues (VAT and SAT), random blood glucose levels, glucose tolerance, insulin tolerance, and overall body composition. The gene expression profiles of VAT were quantified utilizing the Whole Mouse Genome Oligo Microarray and subsequently analyzed through Agilent Feature Extraction software. Functional and pathway analyses were conducted employing Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses, respectively. RESULTS Feeding a high-fat diet (HFD) moderately increased the weights of both VAT and SAT, but this increase was mitigated by the protective effect of endogenous E2. Conversely, ovariectomy (OVX) led to a significant increase in VAT weight and the VAT/SAT weight ratio, and this increase was also reversed with E2 treatment. Notably, OVX diminished the expression of genes involved in lipid metabolism compared to HFD feeding alone, signaling a widespread reduction in lipid metabolic activity, which was completely counteracted by E2 administration. This study provides a comprehensive insight into E2's local and direct protective effects against visceral adiposity in VAT at the gene level. CONCLUSION In conclusion, the present study demonstrated that the HFD-induced over-nutritional challenge disrupted the gene expression profile of visceral fat, leading to a universally decreased lipid metabolic status in E2 deficient mice. E2 treatment effectively reversed this condition, shedding light on the mechanistic role and therapeutic potential of E2 in combating visceral obesity.
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Affiliation(s)
- Su-Huan Liu
- Research Base of Chinese Medicine Syndrome, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
- Research Center for Translational Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, China
| | - Zhao-Shui Shangguan
- Research Center for Translational Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, China
| | - Paiziliya Maitiaximu
- Research Center for Translational Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, China
| | - Zhi-Peng Li
- Research Center for Translational Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, China
| | - Xin-Xin Chen
- Research Center for Translational Medicine, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, China
| | - Can-Dong Li
- Research Base of Chinese Medicine Syndrome, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
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2
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Yan S, Wang Y, Wang B, Zuo S, Yu Y. Thromboxane A 2 Modulates de novo Synthesis of Adrenal Corticosterone in Mice via p38/14-3-3γ/StAR Signaling. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307926. [PMID: 38460156 PMCID: PMC11095200 DOI: 10.1002/advs.202307926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/21/2024] [Indexed: 03/11/2024]
Abstract
Prostanoids are endogenous lipid bioactive mediators that play essential roles in physiological processes such as glucocorticoid secretion. Here, it is found that the thromboxane (Tx)A2 receptor (TP) is highly expressed in the adrenal cortex of mice. Both global and adrenocortical-specific deletion of the TP receptor lead to increased adiposity in mice by elevating corticosterone synthesis. Mechanistically, the TP receptor deletion increases the phosphorylation of steroidogenic acute regulatory protein (StAR) and corticosterone synthesis in adrenal cortical cells by suppressing p-p38-mediated phosphorylation of 14-3-3γ adapter protein at S71. The activation of the p38 in the adrenal cortical cells by forced expression of the MKK6EE gene attenuates hypercortisolism in TP-deficient mice. These observations suggest that the TxA2/TP signaling regulates adrenal corticosterone homeostasis independent of the hypothalamic-pituitary-adrenal axis and the TP receptor may serve as a promising therapeutic target for hypercortisolism.
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Affiliation(s)
- Shuai Yan
- Department of PharmacologyTianjin Key Laboratory of Inflammatory BiologyState Key Laboratory of Experimental HematologyKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)The Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjin300070P. R. China
- Division of Endocrinology, Diabetes, and MetabolismBeth Israel Deaconess Medical CenterHarvard Medical School330 Brookline AvenueBostonMassachusetts02115USA
| | - Yuanyang Wang
- Department of PharmacologyTianjin Key Laboratory of Inflammatory BiologyState Key Laboratory of Experimental HematologyKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)The Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjin300070P. R. China
| | - Bei Wang
- Department of PharmacologyTianjin Key Laboratory of Inflammatory BiologyState Key Laboratory of Experimental HematologyKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)The Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjin300070P. R. China
| | - Shengkai Zuo
- Department of PharmacologyTianjin Key Laboratory of Inflammatory BiologyState Key Laboratory of Experimental HematologyKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)The Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjin300070P. R. China
- Department of BiopharmaceuticsTianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical UniversityTianjin300070P. R. China
| | - Ying Yu
- Department of PharmacologyTianjin Key Laboratory of Inflammatory BiologyState Key Laboratory of Experimental HematologyKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)The Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjin300070P. R. China
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3
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McElwain CJ, Manna S, Musumeci A, Sylvester I, Rouchon C, O'Callaghan AM, Ebad MAB, McCarthy FP, McCarthy CM. Defective Visceral Adipose Tissue Adaptation in Gestational Diabetes Mellitus. J Clin Endocrinol Metab 2024; 109:1275-1284. [PMID: 38035802 PMCID: PMC11031241 DOI: 10.1210/clinem/dgad699] [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: 08/25/2023] [Revised: 11/14/2023] [Accepted: 11/28/2023] [Indexed: 12/02/2023]
Abstract
CONTEXT Gestational diabetes mellitus (GDM) is a complex obstetric condition affecting localized glucose metabolism, resulting in systemic metabolic dysfunction. OBJECTIVE This cross-sectional study aimed to explore visceral adipose tissue (VAT) as an integral contributor to GDM, focusing on elucidating the specific contribution of obesity and GDM pathology to maternal outcomes. METHODS Fifty-six nulliparous pregnant women were recruited, including normal glucose tolerant (NGT) (n = 30) and GDM (n = 26) participants. Participants were subgrouped as nonobese (BMI <30 kg/m2) or obese (BMI ≥30 kg/m2). Metabolic markers in circulation, VAT, and placenta were determined. Morphological analysis of VAT and immunoblotting of the insulin signaling cascade were performed. RESULTS GDM participants demonstrated hyperinsulinemia and elevated homeostatic model assessment for insulin resistance (HOMA-IR) scores relative to NGT participants. The GDM-obese subgroup had significant VAT adipocyte hypoplasia relative to NGT-nonobese tissue. GDM-obese VAT had significantly lower insulin receptor substrate (IRS)-2 expression, with elevated ser312 phosphorylation of IRS-1, relative to NGT-nonobese. GDM-obese participants had significantly elevated circulating leptin levels and placental adipsin secretion, while GDM-nonobese participants had elevated circulating adipsin levels with reduced placental adiponectin secretion. CONCLUSION These findings suggest that GDM-obese pregnancy is specifically characterized by inadequate VAT remodeling and dysfunctional molecular signaling, which contribute to insulin resistance and hinder metabolic health.
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Affiliation(s)
- Colm J McElwain
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Samprikta Manna
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, Cork T12DC4A, Ireland
| | - Andrea Musumeci
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Isaac Sylvester
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Chloé Rouchon
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Anne Marie O'Callaghan
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Mustafa Abdalla Bakhit Ebad
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
| | - Fergus P McCarthy
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, Cork T12DC4A, Ireland
| | - Cathal M McCarthy
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, Cork T12XF62, Ireland
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Hu Y, Huang Y, Jiang Y, Weng L, Cai Z, He B. The Different Shades of Thermogenic Adipose Tissue. Curr Obes Rep 2024:10.1007/s13679-024-00559-y. [PMID: 38607478 DOI: 10.1007/s13679-024-00559-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/12/2024] [Indexed: 04/13/2024]
Abstract
PURPOSE OF REVIEW By providing a concise overview of adipose tissue types, elucidating the regulation of adipose thermogenic capacity in both physiological contexts and chronic wasting diseases (a protracted hypermetabolic state that precipitates sustained catabolism and consequent progressive corporeal atrophy), and most importantly, delving into the ongoing discourse regarding the role of adipose tissue thermogenic activation in chronic wasting diseases, this review aims to provide researchers with a comprehensive understanding of the field. RECENT FINDINGS Adipose tissue, traditionally classified as white, brown, and beige (brite) based on its thermogenic activity and potential, is intricately regulated by complex mechanisms in response to exercise or cold exposure. This regulation is adipose depot-specific and dependent on the duration of exposure. Excessive thermogenic activation of adipose tissue has been observed in chronic wasting diseases and has been considered a pathological factor that accelerates disease progression. However, this conclusion may be confounded by the detrimental effects of excessive lipolysis. Recent research also suggests that such activation may play a beneficial role in the early stages of chronic wasting disease and provide potential therapeutic effects. A more comprehensive understanding of the changes in adipose tissue thermogenesis under physiological and pathological conditions, as well as the underlying regulatory mechanisms, is essential for the development of novel interventions to improve health and prevent disease.
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Affiliation(s)
- Yunwen Hu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Yijie Huang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Yangjing Jiang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Lvkan Weng
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Zhaohua Cai
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Ben He
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
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5
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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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6
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Hagberg CE, Spalding KL. White adipocyte dysfunction and obesity-associated pathologies in humans. Nat Rev Mol Cell Biol 2024; 25:270-289. [PMID: 38086922 DOI: 10.1038/s41580-023-00680-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2023] [Indexed: 02/10/2024]
Abstract
The prevalence of obesity and associated chronic diseases continues to increase worldwide, negatively impacting on societies and economies. Whereas the association between excess body weight and increased risk for developing a multitude of diseases is well established, the initiating mechanisms by which weight gain impairs our metabolic health remain surprisingly contested. In order to better address the myriad of disease states associated with obesity, it is essential to understand adipose tissue dysfunction and develop strategies for reinforcing adipocyte health. In this Review we outline the diverse physiological functions and pathological roles of human white adipocytes, examining our current knowledge of why white adipocytes are vital for systemic metabolic control, yet poorly adapted to our current obesogenic environment.
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Affiliation(s)
- Carolina E Hagberg
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Kirsty L Spalding
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden.
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7
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Shin HH, Kim JH, Jung YJ, Kwak MS, Sung MH, Imm JY. Postbiotic potential of Bacillus velezensis KMU01 cell-free supernatant for the alleviation of obesity in mice. Heliyon 2024; 10:e25263. [PMID: 38495172 PMCID: PMC10943329 DOI: 10.1016/j.heliyon.2024.e25263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 03/19/2024] Open
Abstract
Attention toward the preventive effects of postbiotics on metabolic diseases has increased because of greater stability and safety over probiotics. However, studies regarding the bioactive effects of postbiotics, especially from probiotic Bacillus strains, are relatively limited. The anti-obesity effects of the cell-free culture supernatant of Bacillus velezensis KMU01 (CFS-B.vele) were evaluated using high-fat-diet (HFD)-induced mice. HFD-induced mice (n = 8 per group) received equal volumes of (1) CFS-B.vele (114 mg/kg) in PBS, (2) Xenical in PBS, or (3) PBS alone by oral gavage daily for 13 weeks. The results demonstrated that CFS-B.vele changed the gut microbiota and showed anti-obesity effects in HFD-induced obese mice. The elevated Firmicutes/Bacteroidota ratio induced by HFD was decreased in the CFS-B.vele group compared to the other groups (p < 0.05). The CFS-B.vele intervention led to the enrichment of SCFA-producers, such as Roseburia and Eubacterium, in the cecum, suggesting their potential involvement in the amelioration of obesity. Due to these changes, the various obesity-related biomarkers (body weight, fat in tissue, white adipose tissue weight and size, serum LDL-cholesterol level, hepatic lipid accumulation, and adipogenesis/lipogenesis-related gene/protein expression) were improved. Our findings suggest that CFS-B.vele has potential as a novel anti-obesity agent through modulation of the gut microbiota.
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Affiliation(s)
- Hee Hyun Shin
- Department of Foods and Nutrition, Kookmin University, Seoul, 02707, South Korea
| | | | - Ye-Jin Jung
- KookminBio Corporation, Seoul, 02826, South Korea
| | - Mi-Sun Kwak
- KookminBio Corporation, Seoul, 02826, South Korea
| | | | - Jee-Young Imm
- Department of Foods and Nutrition, Kookmin University, Seoul, 02707, South Korea
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8
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Park JH, Kwon S, Park YM. Extracellular Vimentin Alters Energy Metabolism And Induces Adipocyte Hypertrophy. Diabetes Metab J 2024; 48:215-230. [PMID: 37750184 PMCID: PMC10995492 DOI: 10.4093/dmj.2022.0332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/19/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGRUOUND Previous studies have reported that oxidative stress contributes to obesity characterized by adipocyte hypertrophy. However, mechanism has not been studied extensively. In the current study, we evaluated role of extracellular vimentin secreted by oxidized low-density lipoprotein (oxLDL) in energy metabolism in adipocytes. METHODS We treated 3T3-L1-derived adipocytes with oxLDL and measured vimentin which was secreted in the media. We evaluated changes in uptake of glucose and free fatty acid, expression of molecules functioning in energy metabolism, synthesis of adenosine triphosphate (ATP) and lactate, markers for endoplasmic reticulum (ER) stress and autophagy in adipocytes treated with recombinant vimentin. RESULTS Adipocytes secreted vimentin in response to oxLDL. Microscopic evaluation revealed that vimentin treatment induced increase in adipocyte size and increase in sizes of intracellular lipid droplets with increased intracellular triglyceride. Adipocytes treated with vimentin showed increased uptake of glucose and free fatty acid with increased expression of plasma membrane glucose transporter type 1 (GLUT1), GLUT4, and CD36. Vimentin treatment increased transcription of GLUT1 and hypoxia-inducible factor 1α (Hif-1α) but decreased GLUT4 transcription. Adipose triglyceride lipase (ATGL), peroxisome proliferator-activated receptor γ (PPARγ), sterol regulatory element-binding protein 1 (SREBP1), diacylglycerol O-acyltransferase 1 (DGAT1) and 2 were decreased by vimentin treatment. Markers for ER stress were increased and autophagy was impaired in vimentin-treated adipocytes. No change was observed in synthesis of ATP and lactate in the adipocytes treated with vimentin. CONCLUSION We concluded that extracellular vimentin regulates expression of molecules in energy metabolism and promotes adipocyte hypertrophy. Our results show that vimentin functions in the interplay between oxidative stress and metabolism, suggesting a mechanism by which adipocyte hypertrophy is induced in oxidative stress.
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Affiliation(s)
- Ji-Hae Park
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
| | - Soyeon Kwon
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
| | - Young Mi Park
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
- Department of Molecular Medicine, Ewha Womans University College of Medicine, Seoul, Korea
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9
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Arivazhagan L, Popp CJ, Ruiz HH, Wilson RA, Manigrasso MB, Shekhtman A, Ramasamy R, Sevick MA, Schmidt AM. The RAGE/DIAPH1 axis: mediator of obesity and proposed biomarker of human cardiometabolic disease. Cardiovasc Res 2024; 119:2813-2824. [PMID: 36448548 DOI: 10.1093/cvr/cvac175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 12/07/2023] Open
Abstract
Overweight and obesity are leading causes of cardiometabolic dysfunction. Despite extensive investigation, the mechanisms mediating the increase in these conditions are yet to be fully understood. Beyond the endogenous formation of advanced glycation endproducts (AGEs) in overweight and obesity, exogenous sources of AGEs accrue through the heating, production, and consumption of highly processed foods. Evidence from cellular and mouse model systems indicates that the interaction of AGEs with their central cell surface receptor for AGE (RAGE) in adipocytes suppresses energy expenditure and that AGE/RAGE contributes to increased adipose inflammation and processes linked to insulin resistance. In human subjects, the circulating soluble forms of RAGE, which are mutable, may serve as biomarkers of obesity and weight loss. Antagonists of RAGE signalling, through blockade of the interaction of the RAGE cytoplasmic domain with the formin, Diaphanous-1 (DIAPH1), target aberrant RAGE activities in metabolic tissues. This review focuses on the potential roles for AGEs and other RAGE ligands and RAGE/DIAPH1 in the pathogenesis of overweight and obesity and their metabolic consequences.
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Affiliation(s)
- Lakshmi Arivazhagan
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Collin J Popp
- Center for Healthful Behavior Change, Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Henry H Ruiz
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Robin A Wilson
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Michaele B Manigrasso
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Alexander Shekhtman
- Department of Chemistry, The State University of New York at Albany, Albany, NY 12222, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Mary Ann Sevick
- Center for Healthful Behavior Change, Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
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10
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Barbosa P, Pinho A, Lázaro A, Paula D, Tralhão JG, Paiva A, Pereira MJ, Carvalho E, Laranjeira P. Bariatric Surgery Induces Alterations in the Immune Profile of Peripheral Blood T Cells. Biomolecules 2024; 14:219. [PMID: 38397455 PMCID: PMC10886753 DOI: 10.3390/biom14020219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Low-grade inflammation is closely linked to obesity and obesity-related comorbidities; therefore, immune cells have become an important topic in obesity research. Here, we performed a deep phenotypic characterization of circulating T cells in people with obesity, using flow cytometry. Forty-one individuals with obesity (OB) and clinical criteria for bariatric surgery were enrolled in this study. We identified and quantified 44 different circulating T cell subsets and assessed their activation status and the expression of immune-checkpoint molecules, immediately before (T1) and 7-18 months after (T2) the bariatric surgery. Twelve age- and sex-matched healthy individuals (nOB) were also recruited. The OB participants showed higher leukocyte counts and a higher percentage of neutrophils. The percentage of circulating Th1 cells were negatively correlated to HbA1c and insulin levels. OB Th1 cells displayed a higher activation status and lower PD-1 expression. The percentage of Th17 and Th1/17 cells were increased in OB, whereas the CD4+ Tregs' percentage was decreased. Interestingly, a higher proportion of OB CD4+ Tregs were polarized toward Th1- and Th1/17-like cells and expressed higher levels of CCR5. Bariatric surgery induced the recovery of CD4+ Treg cell levels and the expansion and activation of Tfh and B cells. Our results show alterations in the distribution and phenotype of circulating T cells from OB people, including activation markers and immune-checkpoint proteins, demonstrating that different metabolic profiles are associated to distinct immune profiles, and both are modulated by bariatric surgery.
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Affiliation(s)
- Pedro Barbosa
- University of Coimbra, Institute for Interdisciplinary Research, Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), 3030-789 Coimbra, Portugal;
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, 3030-789 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
| | - Aryane Pinho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Department of Life Science, University of Coimbra, 3000-456 Coimbra, Portugal
| | - André Lázaro
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
| | - Diogo Paula
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
| | - José G. Tralhão
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Artur Paiva
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal
- Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, 3046-854 Coimbra, Portugal
| | - Maria J. Pereira
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, SE-75185 Uppsala, Sweden;
| | - Eugenia Carvalho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, 3030-789 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
| | - Paula Laranjeira
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal
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11
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Ige S, Alaoui K, Al-Dibouni A, Dallas ML, Cagampang FR, Sellayah D, Chantler PD, Boateng SY. Leptin-dependent differential remodeling of visceral and pericardial adipose tissue following chronic exercise and psychosocial stress. FASEB J 2024; 38:e23325. [PMID: 38117486 DOI: 10.1096/fj.202300269rrr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 12/21/2023]
Abstract
Obesity is driven by an imbalance between caloric intake and energy expenditure, causing excessive storage of triglycerides in adipose tissue at different sites around the body. Increased visceral adipose tissue (VAT) is associated with diabetes, while pericardial adipose tissue (PAT) is associated with cardiac pathology. Adipose tissue can expand either through cellular hypertrophy or hyperplasia, with the former correlating with decreased metabolic health in obesity. The aim of this study was to determine how VAT and PAT remodel in response to obesity, stress, and exercise. Here we have used the male obese Zucker rats, which carries two recessive fa alleles that result in the development of hyperphagia with reduced energy expenditure, resulting in morbid obesity and leptin resistance. At 9 weeks of age, a group of lean (Fa/Fa or Fa/fa) Zucker rats (LZR) and obese (fa/fa) Zucker rats (OZR) were treated with unpredictable chronic mild stress or exercise for 8 weeks. To determine the phenotype for PAT and VAT, tissue cellularity and gene expression were analyzed. Finally, leptin signaling was investigated further using cultured 3T3-derived adipocytes. Tissue cellularity was determined following hematoxylin and eosin (H&E) staining, while qPCR was used to examine gene expression. PAT adipocytes were significantly smaller than those from VAT and had a more beige-like appearance in both LZR and OZR. In the OZR group, VAT adipocyte cell size increased significantly compared with LZR, while PAT showed no difference. Exercise and stress resulted in a significant reduction in VAT cellularity in OZR, while PAT showed no change. This suggests that PAT cellularity does not remodel significantly compared with VAT. These data indicate that the extracellular matrix of PAT is able to remodel more readily than in VAT. In the LZR group, exercise increased insulin receptor substrate 1 (IRS1) in PAT but was decreased in the OZR group. In VAT, exercise decreased IRS1 in LZR, while increasing it in OZR. This suggests that in obesity, VAT is more responsive to exercise and subsequently becomes less insulin resistant compared with PAT. Stress increased PPAR-γ expression in the VAT but decreased it in the PAT in the OZR group. This suggests that in obesity, stress increases adipogenesis more significantly in the VAT compared with PAT. To understand the role of leptin signaling in adipose tissue remodeling mechanistically, JAK2 autophosphorylation was inhibited using 5 μM 1,2,3,4,5,6-hexabromocyclohexane (Hex) in cultured 3T3-derived adipocytes. Palmitate treatment was used to induce cellular hypertrophy. Hex blocked adipocyte hypertrophy in response to palmitate treatment but not the increase in lipid droplet size. These data suggest that leptin signaling is necessary for adipocyte cell remodeling, and its absence induces whitening. Taken together, our data suggest that leptin signaling is necessary for adipocyte remodeling in response to obesity, exercise, and psychosocial stress.
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Affiliation(s)
- Susan Ige
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
| | - Kaouthar Alaoui
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
| | - Alaa Al-Dibouni
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
| | - Mark L Dallas
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
| | - Felino R Cagampang
- Institute of Developmental Sciences, Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Dyan Sellayah
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
| | - Paul D Chantler
- School of Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Samuel Y Boateng
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, UK
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12
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Ahmadieh S, Goo B, Zarzour A, Kim D, Shi H, Veerapaneni P, Chouhaita R, Yiew NK, Gonzalez CD, Chakravartty A, Pennoyer J, Hassan N, Benson TW, Ogbi M, Fulton DJ, Lee R, Rice RD, Hilton LR, Lei Y, Lu XY, Chen W, Kim HW, Weintraub NL. Impact of housing temperature on adipose tissue HDAC9 expression and adipogenic differentiation in high fat-fed mice. Obesity (Silver Spring) 2024; 32:107-119. [PMID: 37869960 PMCID: PMC10840750 DOI: 10.1002/oby.23924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 10/24/2023]
Abstract
OBJECTIVE Impaired adipogenic differentiation exacerbates metabolic disease in obesity. This study reported that high-fat diet (HFD)-fed mice housed at thermoneutrality exhibited impaired adipogenic differentiation, attributed to increased expression of histone deacetylase 9 (HDAC9). However, the impact of HFD on adipogenic differentiation is reportedly variable, possibly reflecting divergent environmental conditions such as housing temperature. METHODS C57BL/6J (wild-type [WT]) mice were housed at either thermoneutral (28-30°C) or ambient (20-22°C) temperature and fed HFD or chow diet (CD) for 12 weeks. For acute exposure experiments, WT or transient receptor potential cation channel subfamily M member 8 (TRPM8) knockout mice housed under thermoneutrality were acutely exposed to ambient temperature for 6 to 24 h. RESULTS WT mice fed HFD and housed at thermoneutrality, compared with ambient temperature, gained more weight despite reduced food intake. They likewise exhibited increased inguinal adipose tissue HDAC9 expression and reduced adipogenic differentiation in vitro and in vivo compared with CD-fed mice. Conversely, HFD-fed mice housed at ambient temperature exhibited minimal change in adipose HDAC9 expression or adipogenic differentiation. Acute exposure of WT mice to ambient temperature reduced adipose HDAC9 expression independent of sympathetic β-adrenergic signaling via a TRPM8-dependent mechanism. CONCLUSIONS Adipose HDAC9 expression is temperature sensitive, regulating adipogenic differentiation in HFD-fed mice housed under thermoneutrality.
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Affiliation(s)
- Samah Ahmadieh
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Brandee Goo
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Abdalrahman Zarzour
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - David Kim
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Hong Shi
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Praneet Veerapaneni
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Ronnie Chouhaita
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Nicole K.H. Yiew
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, GA
| | - Carla Dominguez Gonzalez
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Akash Chakravartty
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - James Pennoyer
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Nazeera Hassan
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Tyler W. Benson
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Mourad Ogbi
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - David J. Fulton
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, GA
| | - Richard Lee
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, GA
| | - Robert D. Rice
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, GA
| | - Lisa R. Hilton
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, GA
| | - Yun Lei
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA
| | - Xin-Yun Lu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA
| | - Weiqin Chen
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA
| | - Ha Won Kim
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
| | - Neal L. Weintraub
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
- Department of Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA
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13
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Bril F, Ezeh U, Amiri M, Hatoum S, Pace L, Chen YH, Bertrand F, Gower B, Azziz R. Adipose Tissue Dysfunction in Polycystic Ovary Syndrome. J Clin Endocrinol Metab 2023; 109:10-24. [PMID: 37329216 PMCID: PMC10735305 DOI: 10.1210/clinem/dgad356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 05/15/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023]
Abstract
PURPOSE Polycystic ovary syndrome (PCOS) is a complex genetic trait and the most common endocrine disorder of women, clinically evident in 5% to 15% of reproductive-aged women globally, with associated cardiometabolic dysfunction. Adipose tissue (AT) dysfunction appears to play an important role in the pathophysiology of PCOS even in patients who do not have excess adiposity. METHODS We undertook a systematic review concerning AT dysfunction in PCOS, and prioritized studies that assessed AT function directly. We also explored therapies that targeted AT dysfunction for the treatment of PCOS. RESULTS Various mechanisms of AT dysfunction in PCOS were identified including dysregulation in storage capacity, hypoxia, and hyperplasia; impaired adipogenesis; impaired insulin signaling and glucose transport; dysregulated lipolysis and nonesterified free fatty acids (NEFAs) kinetics; adipokine and cytokine dysregulation and subacute inflammation; epigenetic dysregulation; and mitochondrial dysfunction and endoplasmic reticulum and oxidative stress. Decreased glucose transporter-4 expression and content in adipocytes, leading to decreased insulin-mediated glucose transport in AT, was a consistent abnormality despite no alterations in insulin binding or in IRS/PI3K/Akt signaling. Adiponectin secretion in response to cytokines/chemokines is affected in PCOS compared to controls. Interestingly, epigenetic modulation via DNA methylation and microRNA regulation appears to be important mechanisms underlying AT dysfunction in PCOS. CONCLUSION AT dysfunction, more than AT distribution and excess adiposity, contributes to the metabolic and inflammation abnormalities of PCOS. Nonetheless, many studies provided contradictory, unclear, or limited data, highlighting the urgent need for additional research in this important field.
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Affiliation(s)
- Fernando Bril
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA
| | - Uche Ezeh
- California IVF Fertility Center, Sacramento, CA 95833, USA
- Department of Obstetrics & Gynecology, Heersink School of Medicine, UAB, Birmingham, AL 35233, USA
| | - Mina Amiri
- Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1516745811, Iran
| | - Sana Hatoum
- Foundation for Research and Education Excellence, Vestavia, AL 35243, USA
| | - Lauren Pace
- Department of Obstetrics & Gynecology, Heersink School of Medicine, UAB, Birmingham, AL 35233, USA
| | - Yen-Hao Chen
- Department of Research, Biomere-West, Richmond, CA 94806, USA
| | - Fred Bertrand
- Department of Clinical and Diagnostic Sciences, School of Health Professions, UAB, Birmingham, AL 35294, USA
| | - Barbara Gower
- Department of Nutrition Sciences, School of Health Professions, UAB, Birmingham, AL 35294, USA
| | - Ricardo Azziz
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA
- Department of Obstetrics & Gynecology, Heersink School of Medicine, UAB, Birmingham, AL 35233, USA
- Department of Healthcare Organization and Policy, School of Public Health, UAB, Birmingham, AL 35233, USA
- Department of Health Policy, Management and Behavior, School of Public Health, University at Albany, SUNY, Rensselaer, NY 12144, USA
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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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15
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Zeng T, Song Y, Qi S, Zhang R, Xu L, Xiao P. A comprehensive review of vine tea: Origin, research on Materia Medica, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116788. [PMID: 37343650 DOI: 10.1016/j.jep.2023.116788] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/24/2023] [Accepted: 06/13/2023] [Indexed: 06/23/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Vine tea is a popular folk tea that has been consumed in China for more than 1200 years. It is often used in ethnic medicine by ethnic groups in southwest China with at least 35 aliases in 10 provinces. In coastal areas, vine tea is mostly used to treat heatstroke, aphtha, aphonia, toothache, etc. In contrast, in the southwest inland regions, vine tea is mostly used to clear away heat and toxic materials, antiphlogosis and relieving sore-throat, lowering blood pressure and lipid levels, and alleviating fatigue. Three main species have been used as the source of vine tea, Nekemias grossedentata, Nekemias cantonensis and Nekemias megalophylla. Among them, the leaves of Nekemias grossedentata were considered as new food resource in complicance with regulations, according to the Food Safety Standards published by the Monitoring and Evaluation Department of the National Health and Family Planning Commission in China. AIM OF THE STUDY At present, the comprehensively summary of Materia Medica on the history and source of vine tea is currently unavailable. The current article summed up the Materia Medica, species origin and pharmacological effects of all 3 major species used in vine tea to fill the knowledge gaps. We also aim to provide a reference for future research on historical textual, resource development and medicinal utilization of vine tea. MATERIALS AND METHODS Adhering to the literature screening methodology outlined by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), this review encompasses 148 scholarly research papers from three database, paper ancient books, local chronicles and folklore through field investigations. We then comprehensively summarized and discussed research progresses in scientific and application studies of vine tea. RESULTS The historical records indicated that vine tea could have been used as early as Southern and Northern Dynasties (AC 420-589). Nekemias grossedentata, Nekemias cantonensis and Nekemias megalophylla, were used to considered as vine tea in the ethnic medicine. The main phytochemicals found in three plants are flavonoids, polyphenols and terpenoids, among which dihydromyricetin (DHM) is the most important and most studied active substance. The key words "Ampelopsis grossedentata" (Synonym of Nekemias grossedentata) and "dihydromyricetin/DHM" showed the highest frequency over the last 27 year based on the research trend analysis. And the ethnopharmacology studies drawn the main activities of vine tea are antioxidant, antibacterial, hepatoprotective, neuroprotective and anti-atherosclerosis activities. CONCLUSIONS This review systematically summarized and discussed vine tea from the following five aspects, history, genetic relationship, phytochemistry, research trend and ethnopharmacology. Vine tea has a long historical usage in Chinese ethnic medicine. Its outstanding therapeutic efficacies have attracted extensive attention in other places in the world at present. Nekemias cantonensis and Nekemias megalophylla are quite similar to Nekemias grossedentata in terms of many aspects. However, the current research has a narrow focus on mainly Nekemias grossedentata and DHM. We propose that future studies could be carried out to determine the synergistic effect of multi-components and multi-targets of vine tea including all 3 species to provide valuable knowledge.
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Affiliation(s)
- Tiexin Zeng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
| | - Yanjun Song
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
| | - Shunyao Qi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
| | - Ruyue Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
| | - Lijia Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
| | - Peigen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, 100193, China.
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16
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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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17
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Ky A, McCoy AJ, Flesher CG, Friend NE, Li J, Akinleye K, Patsalis C, Lumeng CN, Putnam AJ, O’Rourke RW. Matrix density regulates adipocyte phenotype. Adipocyte 2023; 12:2268261. [PMID: 37815174 PMCID: PMC10566443 DOI: 10.1080/21623945.2023.2268261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 09/29/2023] [Indexed: 10/11/2023] Open
Abstract
Alterations of the extracellular matrix contribute to adipose tissue dysfunction in metabolic disease. We studied the role of matrix density in regulating human adipocyte phenotype in a tunable hydrogel culture system. Lipid accumulation was maximal in intermediate hydrogel density of 5 weight %, relative to 3% and 10%. Adipogenesis and lipid and oxidative metabolic gene pathways were enriched in adipocytes in 5% relative to 3% hydrogels, while fibrotic gene pathways were enriched in 3% hydrogels. These data demonstrate that the intermediate density matrix promotes a more adipogenic, less fibrotic adipocyte phenotype geared towards increased lipid and aerobic metabolism. These observations contribute to a growing literature describing the role of matrix density in regulating adipose tissue function.
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Affiliation(s)
- Alexander Ky
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Atticus J. McCoy
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Carmen G. Flesher
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Graduate Program, University of Pennsylvania, Philadelphia, PA, USA
| | - Nicole E. Friend
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jie Li
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Kore Akinleye
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Christopher Patsalis
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Department of Bioinformatics, University of Michigan, Ann Arbor, MI, USA
| | - Carey N. Lumeng
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, USA
- Graduate Program in Immunology, University of Michigan, Ann Arbor, MI, USA
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, USA
| | - Andrew J. Putnam
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Robert W. O’Rourke
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Department of Surgery, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
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Rabadán-Chávez G, Díaz de la Garza RI, Jacobo-Velázquez DA. White adipose tissue: Distribution, molecular insights of impaired expandability, and its implication in fatty liver disease. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166853. [PMID: 37611674 DOI: 10.1016/j.bbadis.2023.166853] [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: 04/15/2023] [Revised: 07/17/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023]
Abstract
We are far behind the 2025 World Health Organization (WHO) goal of a zero increase in obesity. Close to 360 million people in Latin America and the Caribbean are overweight, with the highest rates observed in the Bahamas, Mexico, and Chile. To achieve relevant progress against the obesity epidemic, scientific research is essential to establish uniform practices in the study of obesity pathophysiology (using pre-clinical and clinical models) that ensure accuracy, reproducibility, and transcendent outcomes. The present review focuses on relevant aspects of white adipose tissue (WAT) expansion, underlying mechanisms of inefficient expandability, and its repercussion in ectopic lipid accumulation in the liver during nutritional abundance. In addition, we highlight the potential role of disrupted circadian rhythm in WAT metabolism. Since genetic factors also play a key role in determining an individual's predisposition to weight gain, we describe the most relevant genes associated with obesity in the Mexican population, underlining that most of them are related to appetite control.
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Affiliation(s)
- Griselda Rabadán-Chávez
- Tecnologico de Monterrey, Institute for Obesity Research, Av. Eugenio Garza Sada 2501 Sur, 64849 Monterrey, NL, Mexico
| | - Rocío I Díaz de la Garza
- Tecnologico de Monterrey, Institute for Obesity Research, Av. Eugenio Garza Sada 2501 Sur, 64849 Monterrey, NL, Mexico; Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, 64849 Monterrey, NL, Mexico.
| | - Daniel A Jacobo-Velázquez
- Tecnologico de Monterrey, Institute for Obesity Research, Av. Eugenio Garza Sada 2501 Sur, 64849 Monterrey, NL, Mexico; Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Campus Guadalajara, Av. General Ramon Corona 2514, C.P. 45201 Zapopan, Jalisco, Mexico.
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Santos-Pereira M, Pereira SC, Rebelo I, Spadella MA, Oliveira PF, Alves MG. Decoding the Influence of Obesity on Prostate Cancer and Its Transgenerational Impact. Nutrients 2023; 15:4858. [PMID: 38068717 PMCID: PMC10707940 DOI: 10.3390/nu15234858] [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] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
In recent decades, the escalating prevalence of metabolic disorders, notably obesity and being overweight, has emerged as a pressing concern in public health. Projections for the future indicate a continual upward trajectory in obesity rates, primarily attributable to unhealthy dietary patterns and sedentary lifestyles. The ramifications of obesity extend beyond its visible manifestations, intricately weaving a web of hormonal dysregulation, chronic inflammation, and oxidative stress. This nexus of factors holds particular significance in the context of carcinogenesis, notably in the case of prostate cancer (PCa), which is a pervasive malignancy and a leading cause of mortality among men. A compelling hypothesis arises from the perspective of transgenerational inheritance, wherein genetic and epigenetic imprints associated with obesity may wield influence over the development of PCa. This review proposes a comprehensive exploration of the nuanced mechanisms through which obesity disrupts prostate homeostasis and serves as a catalyst for PCa initiation. Additionally, it delves into the intriguing interplay between the transgenerational transmission of both obesity-related traits and the predisposition to PCa. Drawing insights from a spectrum of sources, ranging from in vitro and animal model research to human studies, this review endeavors to discuss the intricate connections between obesity and PCa. However, the landscape remains partially obscured as the current state of knowledge unveils only fragments of the complex mechanisms linking these phenomena. As research advances, unraveling the associated factors and underlying mechanisms promises to unveil novel avenues for understanding and potentially mitigating the nexus between obesity and the development of PCa.
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Affiliation(s)
- Mariana Santos-Pereira
- iBiMED-Institute of Biomedicine and Department of Medical Science, University of Aveiro, 3810-193 Aveiro, Portugal;
- Endocrine and Metabolic Research, Unit for Multidisciplinary Research in Biomedicine (UMIB), School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal;
- Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, 4099-002 Porto, Portugal
| | - Sara C. Pereira
- Endocrine and Metabolic Research, Unit for Multidisciplinary Research in Biomedicine (UMIB), School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal;
- Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, 4099-002 Porto, Portugal
- LAQV-REQUIMTE and Department of Chemistry, Campus Universitario de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal;
- Department of Pathology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Irene Rebelo
- UCIBIO-REQUIMTE, Laboratory of Biochemistry, Department of Biologic Sciences, Pharmaceutical Faculty, University of Porto, 4050-313 Porto, Portugal;
| | - Maria A. Spadella
- Human Embryology Laboratory, Marília Medical School, Marília 17519-030, SP, Brazil;
| | - Pedro F. Oliveira
- LAQV-REQUIMTE and Department of Chemistry, Campus Universitario de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Marco G. Alves
- iBiMED-Institute of Biomedicine and Department of Medical Science, University of Aveiro, 3810-193 Aveiro, Portugal;
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20
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Lake JE, Miao H, Bowman ER, Clark JL, Hyatt AN, Kettelhut A, Lama JR, Reisner SL, Mayer KH, Perez-Brumer A, Funderburg N. Gender-affirming hormone therapy decreases d-dimer but worsens insulin sensitivity in transgender women. HIV Med 2023; 24:1144-1149. [PMID: 37386803 PMCID: PMC10755063 DOI: 10.1111/hiv.13522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/12/2023] [Indexed: 07/01/2023]
Abstract
OBJECTIVES Gender-affirming hormonal therapies (GAHT) and HIV increase cardiovascular risk for transgender women (TW), yet there is a paucity of data quantifying cardiometabolic changes following GAHT initiation, particularly among TW with HIV. METHODS The Féminas study enrolled TW from October 2016 to March 2017 in Lima, Peru. Participants reported sexual activity that was high risk for HIV acquisition or transmission. All were tested for HIV/ sexually transmitted infection and were given access to GAHT (oestradiol valerate and spironolactone), HIV pre-exposure prophylaxis (PrEP) or antiretroviral therapy (ART) for 12 months. Biomarker measurement was done on stored serum, whereas fasting glucose and lipids were measured in real time. RESULTS In all, 170 TW (32 with HIV, 138 without HIV) had median age 27 years and 70% prior GAHT use. At baseline, PCSK9, sCD14, sCD163, IL-6, sTNFRI/II, CRP and EN-RAGE levels were significantly higher in TW with HIV than in TW without HIV. High-density lipoprotein and total cholesterol were lower and insulin and glucose parameters were similar. All TW with HIV started ART, but only five achieved virological suppression at any time. No TW without HIV initiated PrEP. Over 6 months, all participants initiated GAHT and had worsening insulin, glucose and HOMA-IR. Large d-dimer decreases also occurred. Similar changes occurred in TW with and without HIV. CONCLUSIONS In this unique cohort of TW, GAHT decreased d-dimer but worsened insulin sensitivity. Because PrEP uptake and ART adherence were very low, observed effects are primarily attributed to GAHT use. Further study is needed to better understand cardiometabolic changes in TW by HIV serostatus.
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Affiliation(s)
- Jordan E. Lake
- University of Texas Health Science Center at Houston, 6431 Fannin St. MSB 2.112, Houston, TX 77030, USA
| | - Hongyu Miao
- Florida State University, 600 W College Ave, Tallahassee, FL 32306, USA
| | - Emily R. Bowman
- The Ohio State University, 453 West 10 Ave, Columbus, OH 43210, USA
| | - Jesse L. Clark
- University of California, Los Angeles, 405 Hilgard Ave., Los Angeles 90095, CA, USA
| | - Ana N. Hyatt
- University of Texas Health Science Center at Houston, 6431 Fannin St. MSB 2.112, Houston, TX 77030, USA
| | - Aaren Kettelhut
- The Ohio State University, 453 West 10 Ave, Columbus, OH 43210, USA
| | - Javier R. Lama
- Asociación Civil Impacta Salud y Educación, Av. Almte. Miguel Grau 1010, Lima 15063, Peru
| | - Sari L. Reisner
- Brigham and Women’s Hospital, 75 Francis St, Boston, MA 02115, USA
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21
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Atorrasagasti C, Onorato AM, Mazzolini G. The role of SPARC (secreted protein acidic and rich in cysteine) in the pathogenesis of obesity, type 2 diabetes, and non-alcoholic fatty liver disease. J Physiol Biochem 2023; 79:815-831. [PMID: 36018492 DOI: 10.1007/s13105-022-00913-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/18/2022] [Indexed: 11/28/2022]
Abstract
Secreted protein acidic and rich in cysteine (SPARC) is an extracellular matrix glycoprotein with pleiotropic functions, which is expressed in adipose, hepatic, muscular, and pancreatic tissue. Particularly, several studies demonstrated that SPARC is an important player in the context of obesity, diabetes, and fatty liver disease including advanced hepatic fibrosis and hepatocellular carcinoma. Evidence in murine and human samples indicates that SPARC is involved in adipogenesis, cellular metabolism, extracellular matrix modulation, glucose and lipid metabolism, among others. Furthermore, studies in SPARC knockout mouse model showed that SPARC contributes to adipose tissue formation, non-alcoholic fatty liver disease (NAFLD), and diabetes. Hence, SPARC may represent a novel and interesting target protein for future therapeutic interventions or a biomarker of disease progression. This review summarizes the role of SPARC in the pathophysiology of obesity, and extensively revised SPARC functions in physiological and pathological adipose tissue deposition, muscle metabolism, liver, and diabetes-related pathways.
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Affiliation(s)
- Catalina Atorrasagasti
- Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Instituto de Investigaciones en Medicina Traslacional, CONICET- Universidad Austral, Av. Pte. Perón 1500 (B1629AHJ) Derqui-Pilar, Buenos Aires, Argentina.
| | - Agostina M Onorato
- Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Instituto de Investigaciones en Medicina Traslacional, CONICET- Universidad Austral, Av. Pte. Perón 1500 (B1629AHJ) Derqui-Pilar, Buenos Aires, Argentina
| | - Guillermo Mazzolini
- Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Instituto de Investigaciones en Medicina Traslacional, CONICET- Universidad Austral, Av. Pte. Perón 1500 (B1629AHJ) Derqui-Pilar, Buenos Aires, Argentina.
- Liver Unit, Hospital Universitario Austral, Universidad Austral, Av. Pte. Perón 1500 (B1629AHJ) Derqui-Pilar, Buenos Aires, Argentina.
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22
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Yu L, Zhao Y, Zhao Y. Advances in the pharmacological effects and molecular mechanisms of emodin in the treatment of metabolic diseases. Front Pharmacol 2023; 14:1240820. [PMID: 38027005 PMCID: PMC10644045 DOI: 10.3389/fphar.2023.1240820] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 10/04/2023] [Indexed: 12/01/2023] Open
Abstract
Rhubarb palmatum L., Polygonum multijiorum Thunb., and Polygonum cuspidatum Sieb. Et Zucc. are traditional Chinese medicines that have been used for thousands of years. They are formulated into various preparations and are widely used. Emodin is a traditional Chinese medicine monomer and the main active ingredient in Rhubarb palmatum L., Polygonum multijiorum Thunb., and Polygonum cuspidatum Sieb. Et Zucc. Modern research shows that it has a variety of pharmacological effects, including promoting lipid and glucose metabolism, osteogenesis, and anti-inflammatory and anti-autophagy effects. Research on the toxicity and pharmacokinetics of emodin can promote its clinical application. This review aims to provide a basis for further development and clinical research of emodin in the treatment of metabolic diseases. We performed a comprehensive summary of the pharmacology and molecular mechanisms of emodin in treating metabolic diseases by searching databases such as Web of Science, PubMed, ScienceDirect, and CNKI up to 2023. In addition, this review also analyzes the toxicity and pharmacokinetics of emodin. The results show that emodin mainly regulates AMPK, PPAR, and inflammation-related signaling pathways, and has a good therapeutic effect on obesity, hyperlipidemia, non-alcoholic fatty liver disease, diabetes and its complications, and osteoporosis. In addition, controlling toxic factors and improving bioavailability are of great significance for its clinical application.
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Affiliation(s)
- Linyuan Yu
- Department of Traditional Chinese Medicine, Chengdu Integrated TCM and Western Medicine Hospital, Chengdu, China
- Department of Pharmacy, Sichuan Second Hospital of TCM, Chengdu, China
| | - Yongliang Zhao
- Nursing Department, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yongli Zhao
- Department of Traditional Chinese Medicine, Chengdu Integrated TCM and Western Medicine Hospital, Chengdu, China
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23
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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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Ford H, Liu Q, Fu X, Strieder-Barboza C. White Adipose Tissue Heterogeneity in the Single-Cell Era: From Mice and Humans to Cattle. BIOLOGY 2023; 12:1289. [PMID: 37886999 PMCID: PMC10604679 DOI: 10.3390/biology12101289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/19/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023]
Abstract
Adipose tissue is a major modulator of metabolic function by regulating energy storage and by acting as an endocrine organ through the secretion of adipokines. With the advantage of next-generation sequencing-based single-cell technologies, adipose tissue has been studied at single-cell resolution, thus providing unbiased insight into its molecular composition. Recent single-cell RNA sequencing studies in human and mouse models have dissected the transcriptional cellular heterogeneity of subcutaneous (SAT), visceral (VAT), and intramuscular (IMAT) white adipose tissue depots and revealed unique populations of adipose tissue progenitor cells, mature adipocytes, immune cell, vascular cells, and mesothelial cells that play direct roles on adipose tissue function and the development of metabolic disorders. In livestock species, especially in bovine, significant gaps of knowledge remain in elucidating the roles of adipose tissue cell types and depots on driving the pathogenesis of metabolic disorders and the distinct fat deposition in VAT, SAT, and IMAT in meat animals. This review summarizes the current knowledge on the transcriptional and functional cellular diversity of white adipose tissue revealed by single-cell approaches and highlights the depot-specific function of adipose tissue in different mammalian species, with a particular focus on recent findings and future implications in cattle.
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Affiliation(s)
- Hunter Ford
- Department of Veterinary Sciences, Davis College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409, USA;
| | - Qianglin Liu
- School of Animal Sciences, Agricultural Center, Louisiana State University, Baton Rouge, LA 70803, USA; (Q.L.); (X.F.)
| | - Xing Fu
- School of Animal Sciences, Agricultural Center, Louisiana State University, Baton Rouge, LA 70803, USA; (Q.L.); (X.F.)
| | - Clarissa Strieder-Barboza
- Department of Veterinary Sciences, Davis College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409, USA;
- School of Veterinary Medicine, Texas Tech University, Amarillo, TX 79106, USA
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25
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Bilgihan MT, Ciftciler R. The Effect of Obesity and Body Mass Index on Hematologic Malignancies. Metab Syndr Relat Disord 2023; 21:353-361. [PMID: 37410513 DOI: 10.1089/met.2023.0048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023] Open
Abstract
A thorough examination of the available literature has revealed a well-established association of obesity and high body mass index (BMI) with an increased risk of various types of cancers, including hematologic malignancies. Specifically, the studies reviewed indicate a clear correlation between obesity and an increased risk of leukemias, lymphomas, multiple myeloma, myelodysplastic syndrome, and myeloproliferative diseases. Despite the established association of obesity and high BMI with hematologic malignancies, the underlying mechanisms remain largely undetermined. The development of hematologic malignancies may be influenced by several mechanisms associated with obesity and high BMI, including chronic inflammation, hormonal imbalances, adiposopathies, and metabolic dysregulation. Furthermore, there is mounting evidence indicating that obesity and high BMI may have a negative impact on the response to treatment and overall survival in patients with hematologic malignancies. This article aims to increase awareness and summarize the current state of research on the impact of obesity on hematologic malignancies, including the mechanisms by which obesity may influence the development and progression of these diseases. In addition, the current review highlights the need for effective weight management strategies in patients with hematologic malignancies to improve outcomes and mitigate the risk of complications.
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Affiliation(s)
| | - Rafiye Ciftciler
- Department of Hematology, Selcuk University, Faculty of Medicine, Konya, Turkey
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26
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Mukherjee S, Skrede S, Haugstøyl M, López M, Fernø J. Peripheral and central macrophages in obesity. Front Endocrinol (Lausanne) 2023; 14:1232171. [PMID: 37720534 PMCID: PMC10501731 DOI: 10.3389/fendo.2023.1232171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/28/2023] [Indexed: 09/19/2023] Open
Abstract
Obesity is associated with chronic, low-grade inflammation. Excessive nutrient intake causes adipose tissue expansion, which may in turn cause cellular stress that triggers infiltration of pro-inflammatory immune cells from the circulation as well as activation of cells that are residing in the adipose tissue. In particular, the adipose tissue macrophages (ATMs) are important in the pathogenesis of obesity. A pro-inflammatory activation is also found in other organs which are important for energy metabolism, such as the liver, muscle and the pancreas, which may stimulate the development of obesity-related co-morbidities, including insulin resistance, type 2 diabetes (T2D), cardiovascular disease (CVD) and non-alcoholic fatty liver disease (NAFLD). Interestingly, it is now clear that obesity-induced pro-inflammatory signaling also occurs in the central nervous system (CNS), and that pro-inflammatory activation of immune cells in the brain may be involved in appetite dysregulation and metabolic disturbances in obesity. More recently, it has become evident that microglia, the resident macrophages of the CNS that drive neuroinflammation, may also be activated in obesity and can be relevant for regulation of hypothalamic feeding circuits. In this review, we focus on the action of peripheral and central macrophages and their potential roles in metabolic disease, and how macrophages interact with other immune cells to promote inflammation during obesity.
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Affiliation(s)
- Sayani Mukherjee
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
- Mohn Center for Diabetes Precision Medicine, Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Physiology, CIMUS, University of Santiago de Compostela, Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Santiago de Compostela, Spain
| | - Silje Skrede
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
- Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
| | - Martha Haugstøyl
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
- Mohn Center for Diabetes Precision Medicine, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Miguel López
- Department of Physiology, CIMUS, University of Santiago de Compostela, Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Santiago de Compostela, Spain
| | - Johan Fernø
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
- Mohn Center for Diabetes Precision Medicine, Department of Clinical Science, University of Bergen, Bergen, Norway
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27
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Keshavjee SH, Schwenger KJP, Yadav J, Pickel L, Ghorbani Y, Sung HK, Jung H, Lou W, Fischer SE, Jackson TD, Okrainec A, Allard JP. Adipose Tissue and Plasma Markers Associated with HbA1c Pre- and Post-bariatric Surgery: a Cross-sectional and Cohort Study. Obes Surg 2023; 33:2443-2451. [PMID: 37380880 DOI: 10.1007/s11695-023-06679-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/30/2023]
Abstract
PURPOSE Obesity can be associated with chronic inflammation and dysregulated expression of inflammatory adipokines that contribute to insulin resistance and type 2 diabetes. This may also affect the clinical response to bariatric surgery. Our objective was whether baseline visceral adipose tissue features and plasma adipokine are associated with HbA1c ≥0.06 at the time of Roux-en-Y gastric bypass (RYGB) surgery and with persistently elevated HbA1c at 12 months post-RYGB. METHODS During the surgery, adipose biopsies and plasma were collected for adipokine/cytokine profile. Clinical and biochemical measurements were also collected at the time of RYGB and, in those with baseline elevated HbA1c, at 12 months post-RYGB. RESULTS In the cross-sectional study, 109 patients (82.6% female; age 49 years; BMI 46.98 kg/m2) participated. Of those with elevated HbA1c at baseline (n = 61), 47 patients had repeated measurements at 12 months post-RYGB (23% drop-out). Using a multivariate logistic regression model, older age (adjusted odds ratio (aOR), 1.14; 95% confidence interval (CI), 1.06-1.22) and higher plasma resistin (aOR, 5.30; 95% CI, 1.25-22.44) were associated with higher odds of HbA1c ≥ 0.06, whereas higher plasma adiponectin (aOR, 0.993; 95% CI, 0.99-0.996) was associated with lower odds of HbA1c ≥0.06. In addition, baseline higher average adipose cell area (aOR, 1.0017; 95% CI, 1.0002-1.0032) and plasma resistin (aOR, 1.0004; 95% CI, 1.0000-1.0009) were associated with higher odds of having persistently elevated HbA1c at 12 months post-RYGB. CONCLUSION Our study suggests that baseline plasma adipokine dysregulation, specifically high resistin, and adipocyte hypertrophy may affect the clinical response to RYGB.
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Affiliation(s)
- Sara H Keshavjee
- Division of General Surgery, University Health Network, University of Toronto, 190 Elizabeth Street, 1st Floor, Suite 408, Toronto, ON, M5G 2C4, Canada
| | - Katherine J P Schwenger
- Division of Gastroenterology, Toronto General Hospital, University Health Network, 6 Queen's Park Crescent West, Third Floor, Toronto, ON, M5S 3H2, Canada
| | - Jitender Yadav
- Department of Immunology, University of Toronto, 1 King's College Circle, Medical Sciences Building, Room 7207, Toronto, ON, M5S 1A8, Canada
| | - Lauren Pickel
- Translational Medicine Program, The Hospital for Sick Children, 686 Bay St, Toronto, ON, M5G 0A4, Canada
| | - Yasaman Ghorbani
- Division of Gastroenterology, Toronto General Hospital, University Health Network, 6 Queen's Park Crescent West, Third Floor, Toronto, ON, M5S 3H2, Canada
| | - Hoon-Ki Sung
- Translational Medicine Program, The Hospital for Sick Children, 686 Bay St, Toronto, ON, M5G 0A4, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, 6th Floor, Toronto, ON, M5S 1A8, Canada
| | - Hyejung Jung
- Dalla Lana Public Health Department, University of Toronto, 155 College St, 6th Fl, Toronto, ON, M5T 3M7, Canada
| | - Wendy Lou
- Dalla Lana Public Health Department, University of Toronto, 155 College St, 6th Fl, Toronto, ON, M5T 3M7, Canada
| | - Sandra E Fischer
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, 6th Floor, Toronto, ON, M5S 1A8, Canada
| | - Timothy D Jackson
- Division of General Surgery, University Health Network, University of Toronto, 190 Elizabeth Street, 1st Floor, Suite 408, Toronto, ON, M5G 2C4, Canada
| | - Allan Okrainec
- Division of General Surgery, University Health Network, University of Toronto, 190 Elizabeth Street, 1st Floor, Suite 408, Toronto, ON, M5G 2C4, Canada
| | - Johane P Allard
- Division of Gastroenterology, Toronto General Hospital, University Health Network, 6 Queen's Park Crescent West, Third Floor, Toronto, ON, M5S 3H2, Canada.
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Kruppa P, Gohlke S, Łapiński K, Garcia-Carrizo F, Soultoukis GA, Infanger M, Schulz TJ, Ghods M. Lipedema stage affects adipocyte hypertrophy, subcutaneous adipose tissue inflammation and interstitial fibrosis. Front Immunol 2023; 14:1223264. [PMID: 37575263 PMCID: PMC10417720 DOI: 10.3389/fimmu.2023.1223264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Lipedema is a painful subcutaneous adipose tissue (SAT) disease characterized by adipocyte hypertrophy, immune cell recruitment, and fibrosis in the affected areas. These features are thought to contribute to the development and progression of the condition. However, the relationship between lipedema disease stage and the associated adipose tissue changes has not been determined so far. Methods SAT biopsies of 32 lipedema patients, ranging across the pathological stages I to III, and 14 BMI- and age-matched controls were harvested from lipedema-affected thighs and non-symptomatic lower abdominal regions. Histological and immunohistochemical (IHC) staining and expression analysis of markers for adipogenesis, immunomodulation, and fibrosis were performed on the tissue biopsies. Results Lipedema patients showed increased adipocyte areas and a stage-dependent shift towards larger cell sizes in the thighs. Lipedema SAT was linked with increased interstitial collagen accumulation in the thighs, but not the lower abdominal region when compared to controls. There was a trend toward progressive SAT fibrosis of the affected thighs with increasing lipedema stage. Elevated gene expression levels of macrophage markers were found for thigh SAT biopsies, but not in the abdominal region. IHC staining of lipedema thigh biopsies confirmed a transiently elevated macrophage polarization towards an M2-like (anti-inflammatory) phenotype. Conclusions In summary, lipedema SAT is associated with stage-dependent adipocyte hypertrophy, stage-progressive interstitial fibrosis and elevated proportion of M2-like macrophages. The character of the inflammatory response differs from primary obesity and may possess an essential role in the development of lipedema.
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Affiliation(s)
- Philipp Kruppa
- Department of Plastic, Aesthetic and Reconstructive Microsurgery/Hand Surgery, Hospital Ernst von Bergmann, Potsdam, Germany
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
- Otto-von-Guericke University Magdeburg, Department of Plastic, Aesthetic and Hand Surgery, Magdeburg, Germany
| | - Sabrina Gohlke
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
| | - Kamila Łapiński
- Department of Plastic, Aesthetic and Reconstructive Microsurgery/Hand Surgery, Hospital Ernst von Bergmann, Potsdam, Germany
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
- Otto-von-Guericke University Magdeburg, Department of Plastic, Aesthetic and Hand Surgery, Magdeburg, Germany
| | - Francisco Garcia-Carrizo
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München, Germany
| | - George A. Soultoukis
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
| | - Manfred Infanger
- Otto-von-Guericke University Magdeburg, Department of Plastic, Aesthetic and Hand Surgery, Magdeburg, Germany
| | - Tim J. Schulz
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition (DIfE) Potsdam-Rehbrücke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München, Germany
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Mojtaba Ghods
- Department of Plastic, Aesthetic and Reconstructive Microsurgery/Hand Surgery, Hospital Ernst von Bergmann, Potsdam, Germany
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Lotfollahzadeh S, Xia C, Amraei R, Hua N, Kandror KV, Farmer SR, Wei W, Costello CE, Chitalia V, Rahimi N. Inactivation of Minar2 in mice hyperactivates mTOR signaling and results in obesity. Mol Metab 2023; 73:101744. [PMID: 37245847 PMCID: PMC10267597 DOI: 10.1016/j.molmet.2023.101744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 05/30/2023] Open
Abstract
OBJECTIVE Obesity is a complex disorder and is linked to chronic diseases such as type 2 diabetes. Major intrinsically disordered NOTCH2-associated receptor2 (MINAR2) is an understudied protein with an unknown role in obesity and metabolism. The purpose of this study was to determine the impact of Minar2 on adipose tissues and obesity. METHOD We generated Minar2 knockout (KO) mice and used various molecular, proteomic, biochemical, histopathology, and cell culture studies to determine the pathophysiological role of Minar2 in adipocytes. RESULTS We demonstrated that the inactivation of Minar2 results in increased body fat with hypertrophic adipocytes. Minar2 KO mice on a high-fat diet develop obesity and impaired glucose tolerance and metabolism. Mechanistically, Minar2 interacts with Raptor, a specific and essential component of mammalian TOR complex 1 (mTORC1) and inhibits mTOR activation. mTOR is hyperactivated in the adipocytes deficient for Minar2 and over-expression of Minar2 in HEK-293 cells inhibited mTOR activation and phosphorylation of mTORC1 substrates, including S6 kinase, and 4E-BP1. CONCLUSION Our findings identified Minar2 as a novel physiological negative regulator of mTORC1 with a key role in obesity and metabolic disorders. Impaired expression or activation of MINAR2 could lead to obesity and obesity-associated diseases.
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Affiliation(s)
- Saran Lotfollahzadeh
- Renal Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Chaoshuang Xia
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Razie Amraei
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Ning Hua
- Biomed Research Center, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Konstantin V Kandror
- Department of Biochemistry, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Stephen R Farmer
- Department of Biochemistry, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Catherine E Costello
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA; Department of Biochemistry, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
| | - Vipul Chitalia
- Renal Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA; Veterans Affairs Boston Healthcare System, Boston, MA, USA; Institute of Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Nader Rahimi
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
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Wang S, Liu Y, Chen J, He Y, Ma W, Liu X, Sun X. Effects of multi-organ crosstalk on the physiology and pathology of adipose tissue. Front Endocrinol (Lausanne) 2023; 14:1198984. [PMID: 37383400 PMCID: PMC10293893 DOI: 10.3389/fendo.2023.1198984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 05/26/2023] [Indexed: 06/30/2023] Open
Abstract
In previous studies, adipocytes were found to play an important role in regulating whole-body nutrition and energy balance, and are also important in energy metabolism, hormone secretion, and immune regulation. Different adipocytes have different contributions to the body, with white adipocytes primarily storing energy and brown adipocytes producing heat. Recently discovered beige adipocytes, which have characteristics in between white and brown adipocytes, also have the potential to produce heat. Adipocytes interact with other cells in the microenvironment to promote blood vessel growth and immune and neural network interactions. Adipose tissue plays an important role in obesity, metabolic syndrome, and type 2 diabetes. Dysfunction in adipose tissue endocrine and immune regulation can cause and promote the occurrence and development of related diseases. Adipose tissue can also secrete multiple cytokines, which can interact with organs; however, previous studies have not comprehensively summarized the interaction between adipose tissue and other organs. This article reviews the effect of multi-organ crosstalk on the physiology and pathology of adipose tissue, including interactions between the central nervous system, heart, liver, skeletal muscle, and intestines, as well as the mechanisms of adipose tissue in the development of various diseases and its role in disease treatment. It emphasizes the importance of a deeper understanding of these mechanisms for the prevention and treatment of related diseases. Determining these mechanisms has enormous potential for identifying new targets for treating diabetes, metabolic disorders, and cardiovascular diseases.
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Affiliation(s)
- Sufen Wang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Institute of Aging Research, School of Medical Technology, Guangdong Medical University, Dongguan, China
| | - Yifan Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Institute of Aging Research, School of Medical Technology, Guangdong Medical University, Dongguan, China
| | - Jiaqi Chen
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Institute of Aging Research, School of Medical Technology, Guangdong Medical University, Dongguan, China
| | - Yuejing He
- Clinical Laboratory, Dongguan Eighth People’s Hospital, Dongguan, China
| | - Wanrui Ma
- Department of General Medicine, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Xinguang Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Institute of Aging Research, School of Medical Technology, Guangdong Medical University, Dongguan, China
| | - Xuerong Sun
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Institute of Aging Research, School of Medical Technology, Guangdong Medical University, Dongguan, China
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Cavaliere G, Cimmino F, Trinchese G, Catapano A, Petrella L, D'Angelo M, Lucchin L, Mollica MP. From Obesity-Induced Low-Grade Inflammation to Lipotoxicity and Mitochondrial Dysfunction: Altered Multi-Crosstalk between Adipose Tissue and Metabolically Active Organs. Antioxidants (Basel) 2023; 12:1172. [PMID: 37371902 DOI: 10.3390/antiox12061172] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 05/23/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Obesity is a major risk factor for several metabolic diseases, including type 2 diabetes, hyperlipidemia, cardiovascular diseases, and brain disorders. Growing evidence suggests the importance of inter-organ metabolic communication for the progression of obesity and the subsequent onset of related disorders. This review provides a broad overview of the pathophysiological processes that from adipose tissue dysfunction leading to altered multi-tissue crosstalk relevant to regulating energy homeostasis and the etiology of obesity. First, a comprehensive description of the role of adipose tissue was reported. Then, attention was turned toward the unhealthy expansion of adipose tissue, low-grade inflammatory state, metabolic inflexibility, and mitochondrial dysfunction as root causes of systemic metabolic alterations. In addition, a short spot was devoted to iron deficiency in obese conditions and the role of the hepcidin-ferroportin relationship in the management of this issue. Finally, different classes of bioactive food components were described with a perspective to enhance their potential preventive and therapeutic use against obesity-related diseases.
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Affiliation(s)
- Gina Cavaliere
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, 80126 Naples, Italy
| | - Fabiano Cimmino
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, 80126 Naples, Italy
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Giovanna Trinchese
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Angela Catapano
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, 80126 Naples, Italy
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Lidia Petrella
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Margherita D'Angelo
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Lucio Lucchin
- Dietetics and Clinical Nutrition, Bolzano Health District, 39100 Bolzano, Italy
| | - Maria Pina Mollica
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, 80126 Naples, Italy
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, 80138 Naples, Italy
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Jung YW, Lee JA, Lee JE, Cha H, Choi YH, Jeong W, Choi CW, Oh JS, Ahn EK, Hong SS. Anti-Adipogenic Activity of Secondary Metabolites Isolated from Smilax sieboldii Miq. on 3T3-L1 Adipocytes. Int J Mol Sci 2023; 24:ijms24108866. [PMID: 37240212 DOI: 10.3390/ijms24108866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Smilax sieboldii, a climbing tree belonging to Smilacaceae, has been used in traditional oriental medicine for treating arthritis, tumors, leprosy, psoriasis, and lumbago. To evaluate the anti-obesity effects of S. sieboldii (Smilacaceae), we screened methylene chloride (CH2Cl2), ethyl acetate (EtOAc), aqueous-saturated n-butanol, and ethanol (EtOH) extracts of the whole plant at various concentrations to inhibit adipogenesis in adipocytes. The 3T3-L1 cell line with Oil red O staining with the help of fluorometry was used as an indicator of anti-obesity activity. Bioactivity-guided fractionation of the EtOH extract and subsequent phytochemical investigation of the active CH2Cl2- and EtOAc-soluble fractions resulted in the isolation of 19 secondary metabolites (1-19), including a new α-hydroxy acid derivative (16) and two new lanostane-type triterpenoids (17 and 18). The structures of these compounds were characterized using various spectroscopic methods. All the isolated compounds were screened for adipogenesis inhibition at a concentration of 100 μM. Of these, compounds 1, 2, 4-9, 15, and 19 significantly reduced fat accumulation in 3T3-L1 adipocytes, especially compounds 4, 7, 9, and 19, showing 37.05 ± 0.95, 8.60 ± 0.41 15.82 ± 1.23, and 17.73 ± 1.28% lipid content, respectively, at a concentration of 100 μM. These findings provide experimental evidence that isolates from S. sieboldii extracts exert beneficial effects regarding the regulation of adipocyte differentiation.
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Affiliation(s)
- Yeon Woo Jung
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Jung A Lee
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Ji Eun Lee
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Hanna Cha
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Yun-Hyeok Choi
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Wonsik Jeong
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Chun Whan Choi
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Joa Sub Oh
- College of Pharmacy, Dankook University, Cheonan 31116, Republic of Korea
| | - Eun-Kyung Ahn
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
| | - Seong Su Hong
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Republic of Korea
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He T, Wang S, Li S, Shen H, Hou L, Liu Y, Wei Y, Xie F, Zhang Z, Zhao Z, Mo C, Guo H, Huang Q, Zhang R, Shen D, Li B. Suppression of preadipocyte determination by SOX4 limits white adipocyte hyperplasia in obesity. iScience 2023; 26:106289. [PMID: 36968079 PMCID: PMC10030912 DOI: 10.1016/j.isci.2023.106289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/03/2023] [Accepted: 02/20/2023] [Indexed: 03/18/2023] Open
Abstract
Preadipocyte determination expanding the pool of preadipocytes is a vital process in adipocyte hyperplasia, but the molecular mechanisms underlying this process are yet to be elucidated. Herein, SRY-related HMG box transcription factor 4 (SOX4) was identified as a critical target in response to BMP4- and TGFβ-regulated preadipocyte determination. SOX4 deficiency is sufficient to promote preadipocyte determination in mesenchymal stem cells (MSCs) and acquisition of preadipocyte properties in nonadipogenic lineages, while its overexpression impairs the adipogenic capacity of preadipocytes and converts them into nonadipogenic lineages. Mechanism studies indicated that SOX4 activates and cooperates with LEF1 to retain the nuclear localization of β-catenin, thus mediating the crosstalk between TGFβ/BMP4 signaling pathway and Wnt signaling pathway to regulate the preadipocyte determination. In vivo studies demonstrated that SOX4 promotes the adipogenic-nonadipogenic conversion and suppresses the adipocyte hyperplasia. Together, our findings highlight the importance of SOX4 in regulating the adipocyte hyperplasia in obesity.
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Affiliation(s)
- Ting He
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Shuai Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Shengnan Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
- School of Medicine, Henan Polytechnic University, Jiaozuo, Henan 454000, China
| | - Huanming Shen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Lingfeng Hou
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Yunjia Liu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Yixin Wei
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Fuan Xie
- Xiamen University Research Center of Retroperitoneal, Tumor Committee of Oncology Society of Chinese Medical Association, Xiang’an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Zhiming Zhang
- Xiamen Cell Therapy Research Center, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361003, China
| | - Zehang Zhao
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Chunli Mo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Huiling Guo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Qingsong Huang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
| | - Rui Zhang
- Xiamen Cell Therapy Research Center, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361003, China
- Corresponding author
| | - Dongyan Shen
- Xiamen Cell Therapy Research Center, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361003, China
- Corresponding author
| | - Boan Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network and Engineering Research Center of Molecular Diagnostics of The Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, Fujian 361100, China
- Corresponding author
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Liu Z, Neuber S, Klose K, Jiang M, Kelle S, Zhou N, Wang S, Stamm C, Luo F. Relationship between epicardial adipose tissue attenuation and coronary artery disease in type 2 diabetes mellitus patients. J Cardiovasc Med (Hagerstown) 2023; 24:244-252. [PMID: 36938808 DOI: 10.2459/jcm.0000000000001454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
BACKGROUND AND AIMS High epicardial adipose tissue (EAT) attenuation is a key characteristic of adipose tissue dysfunction and associated with coronary artery disease (CAD). As little is known about the modulation of EAT attenuation by metabolic disorders, we investigated the association between EAT attenuation and CAD risk factors, CAD presence and CAD severity in type 2 diabetes mellitus (T2DM) patients. METHODS We included 276 inpatients with T2DM and 305 control patients with normal glucose metabolism (NGM), who underwent cardiac computed tomography angiography (CCTA) and coronary artery calcium (CAC) scoring. EAT attenuation and volume were evaluated by contrast-enhanced CCTA image analysis. Furthermore, segment stenosis scores (SSSs) of the left main coronary artery (LMCA), left anterior descending artery (LAD), left circumflex artery (LCX), right coronary artery (RCA), diagonal/intermediate branch (D/I) and obtuse marginal branch (OM) were calculated to assess CAD severity. RESULTS T2DM patients showed higher significant CAC scores, coronary plaque prevalence, total SSSs and LMCA-SSSs, LAD-SSSs, LCX-SSSs, RCA-SSSs and D/I-SSSs compared with NGM controls. In contrast to NGM controls, EAT volume was significantly increased in T2DM patients, whereas EAT attenuation was similar. In T2DM patients, EAT attenuation was associated with discrete CAD risk factors, the presence of coronary and triple-vessel plaques, as well as LAD-SSSs, LCX-SSSs, RCA-SSSs and total SSSs. In addition, EAT attenuation was only associated with the total SSS of calcified plaques, but not with noncalcified plaques. CONCLUSION In T2DM patients, high EAT attenuation is associated with the presence and severity of CAD in general and with coronary stenosis caused by calcified plaques in particular.
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Affiliation(s)
- Zihou Liu
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
- Department of Cardiac Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sebastian Neuber
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
- Deutsches Herzzentrum der Charité (DHZC), Department of Cardiothoracic and Vascular Surgery, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
| | - Kristin Klose
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Meng Jiang
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
- Department of Cardiac Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sebastian Kelle
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
- Department of Internal Medicine/Cardiology, Deutsches Herzzentrum der Charité (DHZC), Berlin, Germany
| | - Ningbo Zhou
- Department of Cardiac Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Shunjun Wang
- Department of Cardiac Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Christof Stamm
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany
- Deutsches Herzzentrum der Charité (DHZC), Department of Cardiothoracic and Vascular Surgery, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
| | - Fanyan Luo
- Department of Cardiac Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
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Zhang X, Ha S, Lau HCH, Yu J. Excess body weight: Novel insights into its roles in obesity comorbidities. Semin Cancer Biol 2023; 92:16-27. [PMID: 36965839 DOI: 10.1016/j.semcancer.2023.03.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/27/2023]
Abstract
Excess body weight is a global health problem due to sedentary lifestyle and unhealthy diet, affecting 2 billion population worldwide. Obesity is a major risk factor for metabolic diseases. Notably, the metabolic risk of obesity largely depends on body weight distribution, of which visceral adipose tissues but not subcutaneous fats are closely associated with obesity comorbidities, including type 2 diabetes, non-alcoholic fatty liver disease, cardiovascular disease and certain types of cancer. Latest multi-omics and mechanistical studies reported the crucial involvement of genetic and epigenetic alterations, adipokines dysregulation, immunity changes, imbalance of white and brown adipose tissues, and gut microbial dysbiosis in mediating the pathogenic association between visceral adipose tissues and comorbidities. In this review, we explore the epidemiology of excess body weight and the up-to-date mechanism of how excess body weight and obesity lead to chronic complications. We also examine the utilization of visceral fat measurement as an accurate clinical parameter for risk assessment in healthy individuals and clinical outcome prediction in obese subjects. In addition, current approaches for the prevention and treatment of excess body weight and its related metabolic comorbidities are further discussed. DATA AVAILABILITY: No data was used for the research described in the article.
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Affiliation(s)
- Xiang Zhang
- Institute of Digestive Disease and the Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Suki Ha
- Institute of Digestive Disease and the Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Harry Cheuk-Hay Lau
- Institute of Digestive Disease and the Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Jun Yu
- Institute of Digestive Disease and the Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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Newman TM, Clear KYJ, Wilson AS, Soto-Pantoja DR, Ochs-Balcom HM, Cook KL. Early-life dietary exposures mediate persistent shifts in the gut microbiome and visceral fat metabolism. Am J Physiol Cell Physiol 2023; 324:C644-C657. [PMID: 35848617 PMCID: PMC9970661 DOI: 10.1152/ajpcell.00380.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In utero dietary exposures are linked to the development of metabolic syndrome in adult offspring. These dietary exposures can potentially impact gut microbial composition and offspring metabolic health. Female BALB/c mice were administered a lard, lard + flaxseed oil, high sugar, or control diet 4 wk before mating, throughout mating, pregnancy, and lactation. Female offspring were offered low-fat control diet at weaning. Fecal 16S sequencing was performed. Untargeted metabolomics was performed on visceral adipose tissue (VAT) of adult female offspring. Immunohistochemistry was used to determine adipocyte size, VAT collagen deposition, and macrophage content. Hippurate was administered via weekly intraperitoneal injections to low-fat and high-fat diet-fed female mice and VAT fibrosis and collagen 1A (COL1A) were assessed by immunohistochemistry. Lard diet exposure was associated with elevated body and VAT weight and dysregulated glucose metabolism. Lard + flaxseed oil attenuated these effects. Lard diet exposures were associated with increased adipocyte diameter and VAT macrophage count. Lard + flaxseed oil reduced adipocyte diameter and fibrosis compared with the lard diet. Hippurate-associated bacteria were influenced by lard versus lard + flax exposures that persisted to adulthood. VAT hippurate was increased in lard + flaxseed oil compared with lard diet. Hippurate supplementation mitigated VAT fibrosis pathology. Maternal high-fat lard diet consumption resulted in long-term metabolic and gut microbiome programming in offspring, impacting VAT inflammation and fibrosis, and was associated with reduced VAT hippurate content. These traits were not observed in maternal high-fat lard + flaxseed oil diet-exposed offspring. Hippurate supplementation reduced VAT fibrosis. These data suggest that detrimental effects of early-life high-fat lard diet exposure can be attenuated by dietary omega-3 polyunsaturated fatty acid supplementation.
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Affiliation(s)
- Tiffany M. Newman
- 1Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina,2Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Kenysha Y. J. Clear
- 2Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Adam S. Wilson
- 2Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - David R. Soto-Pantoja
- 1Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina,2Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina,3Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Heather M. Ochs-Balcom
- 4Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York
| | - Katherine L. Cook
- 1Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina,2Department of Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina,3Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Kim E, Ham SA, Hwang JS, Won JP, Lee HG, Hur J, Seo HG. Zinc finger protein 251 deficiency impairs glucose metabolism by inducing adipocyte hypertrophy. Mol Cell Endocrinol 2023; 562:111838. [PMID: 36565788 DOI: 10.1016/j.mce.2022.111838] [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: 10/24/2022] [Revised: 12/05/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Zinc finger protein (ZFP) 251 is a member of the C2H2 ZFP family containing a Krüppel-associated box domain that might mainly act as a transcriptional repressor. However, its cellular function remains largely unknown. Here, we discovered that ZFP251 deficiency caused glucose intolerance in mice. This phenotype was associated with impaired insulin signaling due to hypertrophic changes in white adipose tissue (WAT). Gene ontology analysis revealed that ZFP251 deficiency affected the expression of genes associated with adipocyte differentiation and lipid and fatty acid metabolism. Consistent with in vivo results, hypertrophic changes were observed in Zfp251 knockdown (KD) 3T3-L1 adipocytes. In addition, Zfp251 KD 3T3-L1 preadipocytes exhibited cell cycle arrest in G0/G1 phase, leading to impaired differentiation into mature adipocytes, upon which abnormal mitotic clonal expansion and reduced expression of adipogenic markers were exhibited. These results suggest that ZFP251 deficiency causes impaired adipogenesis and adipocyte hypertrophy, leading to dysfunction of WAT.
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Affiliation(s)
- Eunsu Kim
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Sun Ah Ham
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jung Seok Hwang
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jun Pil Won
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Hyuk Gyoon Lee
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jinwoo Hur
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Han Geuk Seo
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.
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Ke S, Hu Q, Zhu G, Li L, Sun X, Cheng H, Li L, Yao Y, Li H. Remodeling of white adipose tissue microenvironment against obesity by phytochemicals. Phytother Res 2023. [PMID: 36786412 DOI: 10.1002/ptr.7758] [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: 08/31/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 02/15/2023]
Abstract
Obesity is a kind of chronic disease due to a long-term imbalance between energy intake and expenditure. In recent years, the number of obese people around the world has soared, and obesity problem should not be underestimated. Obesity is characterized by changes in the adipose microenvironment, mainly manifested as hypertrophy, chronic inflammatory status, hypoxia, and fibrosis, thus contributing to the pathological changes of other tissues. A plethora of phytochemicals have been found to improve adipose microenvironment, thus prevent and resist obesity, providing a new research direction for the treatment of obesity and related diseases. This paper discusses remodeling of the adipose tissue microenvironment as a therapeutic avenue and reviews the progress of phytochemicals in fighting obesity by improving the adipose microenvironment.
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Affiliation(s)
- Shuwei Ke
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Qingyuan Hu
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Guanyao Zhu
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Linghuan Li
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Xuechao Sun
- Research and Development Department, Zhejiang Starry Pharmaceutical Co., Ltd., Taizhou, People's Republic of China
| | - Hongbin Cheng
- Research and Development Department, Zhejiang Starry Pharmaceutical Co., Ltd., Taizhou, People's Republic of China
| | - Lingqiao Li
- Research and Development Department, Zhejiang Starry Pharmaceutical Co., Ltd., Taizhou, People's Republic of China
| | - Yuanfa Yao
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Hanbing Li
- Institute of Pharmacology, Department of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
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Choi M, Kwon H, Pak Y. Caveolin-2 in association with nuclear lamina controls adipocyte hypertrophy. FASEB J 2023; 37:e22745. [PMID: 36637913 DOI: 10.1096/fj.202201028rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 12/13/2022] [Accepted: 12/19/2022] [Indexed: 01/14/2023]
Abstract
Here, we identify that Caveolin-2 (Cav-2), an integral membrane protein, controls adipocyte hypertrophy in association with nuclear lamina. In the hypertrophy stage of adipogenesis, pY19-Cav-2 association with lamin A/C facilitated the disengagement of CCAAT/enhancer-binding protein α (C/EBPα) and peroxisome proliferator-activated receptor γ (PPARγ) from lamin A/C and repressed Cav-2 promoter at the nuclear periphery for epigenetic activation of Cav-2, and thereby promoted C/EBPα and PPARγ-induced adipocyte hypertrophy. Stable expression of Cav-2 was required and retained by phosphorylation, deubiquitination, and association with lamin A/C for the adipocyte hypertrophy. However, obese adipocytes exhibited augmented Cav-2 stability resulting from the up-regulation of lamin A/C over lamin B1, protein tyrosine phosphatase 1B (PTP1B), and nuclear deubiquitinating enzyme (DUB), Uchl5. Our findings show a novel epigenetic regulatory mechanism of adipocyte hypertrophy by Cav-2 at the nuclear periphery.
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Affiliation(s)
- Moonjeong Choi
- Division of Life Science, Graduate School of Applied Life Science (BK21 Plus Program), PMBBRC, Gyeongsang National University, Jinju, South Korea
| | - Hayeong Kwon
- Division of Life Science, Graduate School of Applied Life Science (BK21 Plus Program), PMBBRC, Gyeongsang National University, Jinju, South Korea
| | - Yunbae Pak
- Division of Life Science, Graduate School of Applied Life Science (BK21 Plus Program), PMBBRC, Gyeongsang National University, Jinju, South Korea
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The association between visceral adipocyte hypertrophy and NAFLD in subjects with different degrees of adiposity. Hepatol Int 2023; 17:215-224. [PMID: 36071305 DOI: 10.1007/s12072-022-10409-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 08/12/2022] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To investigate the association between visceral adipocyte hypertrophy and the onset and development of non-alcoholic fatty liver disease (NAFLD) in subjects with different degrees of adiposity. METHODS Omental adipose tissue and liver biopsies were collected from obese subjects. NAFLD was defined according to the NASH Clinical Research Network scoring system. Adipocyte size was measured using pathological section analysis. Adipose tissue insulin resistance (Adipo-IR) was calculated as fasting insulin (pmol/L) × fasting free fatty acid concentration (mmol/L). RESULTS In total, 275 obese patients were enrolled, including 158 females and 58 males with NAFLD. In females, adipocyte size was significantly larger in NAFLD participants as compared to the controls (99.37 ± 14.18 vs. 84.14 ± 12.65 [Formula: see text]m, p < 0.001). Moreover, adipocyte size was larger in females with non-alcoholic steatohepatitis (NASH) as compared to those with non-alcoholic fatty liver (NAFL) (101.45 ± 12.77 vs. 95.79 ± 15.80 [Formula: see text]m, p = 0.015). Mediation analysis showed that adipocyte size impacted the NAFLD activity score through Adipo-IR (b = 0.007 [95% bootstrap CI 0.002, 0.013]). Furthermore, the females were divided into: Q1 (BMI < 32.5 kg/m2), Q2 (BMI 32.5-35.5 kg/m2), Q3 (BMI 35.5-38.8 kg/m2) and Q4 (BMI ≥ 38.8 kg/m2) according to BMI quartiles. Omental adipocyte size was larger in NAFLD subjects in Q1-Q3, but not in Q4. No similar results were observed in males. CONCLUSION For the first time, we reported that visceral adipocyte hypertrophy was associated with the onset and progression of NAFLD in mild to moderate adiposity but not in severe obesity, which may be mediated by adipose tissue insulin resistance.
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Chaudhary P, Mitra D, Das Mohapatra PK, Oana Docea A, Mon Myo E, Janmeda P, Martorell M, Iriti M, Ibrayeva M, Sharifi-Rad J, Santini A, Romano R, Calina D, Cho WC. Camellia sinensis: insights on its molecular mechanisms of action towards nutraceutical, anticancer potential and other therapeutic applications. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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Abel J, Silva MRD, Costa AB, Oliveira MPD, Silva LED, Dela Vedova LM, Mendes TF, Tartari G, Possato JC, Ferreira GK, Machado de Avila RA, Rezin GT. Therapeutic effects of the gold nanoparticle on obesity-triggered neuroinflammation: a review. J Drug Target 2023; 31:134-141. [PMID: 36066550 DOI: 10.1080/1061186x.2022.2120613] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Introduction: Obesity is considered a chronic non-communicable disease characterised by excess body fat. In recent years the prevalence of obesity has grown a lot. Individuals with obesity store the excess of nutrients consumed in the form of fat in adipose tissue, and generate an imbalance of this tissue, where there is the secretion of adipocytokines, which contributes to a peripheral and central inflammatory picture, reaching the central nervous system (CNS), generating neuroinflammation. There is still no effective and safe therapy for the treatment of obesity, many of the drugs marketed has serious side effects. Therefore, there is a search for therapies aimed mainly at reducing inflammation.Objective: In this work the possibility of using a new therapeutic option for obesity will be explored, using nanotechnology. Nanotechnology has gained prominence in recent years for being a promising technology for treatment and as a molecule-in-the-light in inflammatory diseases. Gold nanoparticles (GNP) stand out among nanomaterials because they demonstrate anti-inflammatory characteristics by various pathways, and have been widely used in the treatment of inflammatory diseases, including in the CNS, demonstrating excellent results.Result: Thus, the use of GNP for the treatment of obesity is promising due to the inflammatory state of obesity, thus acting as anti-inflammatory at the peripheral and central levels.
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Affiliation(s)
- Jessica Abel
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Mariella Reinol da Silva
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Ana Beatriz Costa
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Mariana Pacheco de Oliveira
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Larissa Espindola da Silva
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Larissa Marques Dela Vedova
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Talita Farias Mendes
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Gisele Tartari
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, Brazil
| | - Jonathann Correa Possato
- Laboratory of Pathophysiology, Postgraduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Santa Catarina, Brazil
| | | | - Ricardo Andrez Machado de Avila
- Laboratory of Pathophysiology, Postgraduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Santa Catarina, Brazil
| | - Gislaine Tezza Rezin
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Santa Catarina, 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: 18] [Impact Index Per Article: 18.0] [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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FABP4 Controls Fat Mass Expandability (Adipocyte Size and Number) through Inhibition of CD36/SR-B2 Signalling. Int J Mol Sci 2023; 24:ijms24021032. [PMID: 36674544 PMCID: PMC9867004 DOI: 10.3390/ijms24021032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 01/07/2023] Open
Abstract
Adipose tissue hypertrophy during obesity plays pleiotropic effects on health. Adipose tissue expandability depends on adipocyte size and number. In mature adipocytes, lipid accumulation as triglycerides into droplets is imbalanced by lipid uptake and lipolysis. In previous studies, we showed that adipogenesis induced by oleic acid is signed by size increase and reduction of FAT/CD36 (SR-B2) activity. The present study aims to decipher the mechanisms involved in fat mass regulation by fatty acid/FAT-CD36 signalling. Human adipose stem cells, 3T3-L1, and its 3T3-MBX subclone cell lines were used in 2D cell cultures or co-cultures to monitor in real-time experiments proliferation, differentiation, lipolysis, and/or lipid uptake and activation of FAT/CD36 signalling pathways regulated by oleic acid, during adipogenesis and/or regulation of adipocyte size. Both FABP4 uptake and its induction by fatty acid-mediated FAT/CD36-PPARG gene transcription induce accumulation of intracellular FABP4, which in turn reduces FAT/CD36, and consequently exerts a negative feedback loop on FAT/CD36 signalling in both adipocytes and their progenitors. Both adipocyte size and recruitment of new adipocytes are under the control of FABP4 stores. This study suggests that FABP4 controls fat mass homeostasis.
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Bensussen A, Torres-Magallanes JA, Roces de Álvarez-Buylla E. Molecular tracking of insulin resistance and inflammation development on visceral adipose tissue. Front Immunol 2023; 14:1014778. [PMID: 37026009 PMCID: PMC10070947 DOI: 10.3389/fimmu.2023.1014778] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 02/27/2023] [Indexed: 04/08/2023] Open
Abstract
Background Visceral adipose tissue (VAT) is one of the most important sources of proinflammatory molecules in obese people and it conditions the appearance of insulin resistance and diabetes. Thus, understanding the synergies between adipocytes and VAT-resident immune cells is essential for the treatment of insulin resistance and diabetes. Methods We collected information available on databases and specialized literature to construct regulatory networks of VAT resident cells, such as adipocytes, CD4+ T lymphocytes and macrophages. These networks were used to build stochastic models based on Markov chains to visualize phenotypic changes on VAT resident cells under several physiological contexts, including obesity and diabetes mellitus. Results Stochastic models showed that in lean people, insulin produces inflammation in adipocytes as a homeostatic mechanism to downregulate glucose intake. However, when the VAT tolerance to inflammation is exceeded, adipocytes lose insulin sensitivity according to severity of the inflammatory condition. Molecularly, insulin resistance is initiated by inflammatory pathways and sustained by intracellular ceramide signaling. Furthermore, our data show that insulin resistance potentiates the effector response of immune cells, which suggests its role in the mechanism of nutrient redirection. Finally, our models show that insulin resistance cannot be inhibited by anti-inflammatory therapies alone. Conclusion Insulin resistance controls adipocyte glucose intake under homeostatic conditions. However, metabolic alterations such as obesity, enhances insulin resistance in adipocytes, redirecting nutrients to immune cells, permanently sustaining local inflammation in the VAT.
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Affiliation(s)
- Antonio Bensussen
- *Correspondence: Antonio Bensussen, ; Elena Roces de Álvarez-Buylla,
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Coptis chinensis, and extracts of guava and mulberry leaves present good inhibiting potential on obesity and associated metabolic disorders in high-fat diet obesity mice model. J Tradit Complement Med 2023; 13:270-276. [PMID: 37128193 PMCID: PMC10148135 DOI: 10.1016/j.jtcme.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/03/2022] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
This study aimed to investigate the anti-obesity effects of Coptis chinensis (CC), BALASAN (combinational guava leaf extract and mulberry leaf extract), and CC/BALASAN (CC/BAL) on high-fat diet-induced obese C57BL/6 mice and to explore possible mediating mechanisms in 3T3-L1 pre-adipocytes. Oil red-O stain was used to test the effects of CC, BALASAN, and CC/BAL on the differentiation of 3T3-L1 pre-adipocytes. Additionally, real-time PCR was used to detect the expression of genes involved in adipocyte differentiation and inflammation-related genes in adipose tissue of mice that were fed a high-fat diet. CC, BALASAN, and CC/BAL inhibited the differentiation of 3T3-L1 pre-adipocytes and exhibited excellent inhibitory ability against the expression of PPARγ and RXRα genes associated with adipocyte differentiation. Replenishing mice with a high-fat diet with CC, BALASAN, and CC/BAL reduced body weight gaining and blood glucose and plasma cholesterol levels. CC also effectively reduced liver weight, whereas BALASAN and CC/BAL had no inhibitory effect. In addition, CC effectively inhibited the expression of C/EBP-α in adipose tissue. Interestingly, BALASAN not only inhibited the expression of C/EBP-α, but also that of PPARγ, RXRα, and TNFα. Such data indicated that CC, BALASAN, and CC/BAL may have potentially beneficial effects against obesity and associated metabolic disorders by down-regulating the PPARγ/RXRα pathway.
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Zhang H, Guan Q, Wang R, Yang S, Yu X, Cui D, Su Z. Novel association of SNP rs2297828 in PRDM16 gene with predisposition to type 2 diabetes. Gene X 2023; 849:146916. [DOI: 10.1016/j.gene.2022.146916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/27/2022] [Accepted: 09/21/2022] [Indexed: 10/14/2022] Open
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Zhang YX, Ou MY, Yang ZH, Sun Y, Li QF, Zhou SB. Adipose tissue aging is regulated by an altered immune system. Front Immunol 2023; 14:1125395. [PMID: 36875140 PMCID: PMC9981968 DOI: 10.3389/fimmu.2023.1125395] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/30/2023] [Indexed: 02/19/2023] Open
Abstract
Adipose tissue is a widely distributed organ that plays a critical role in age-related physiological dysfunctions as an important source of chronic sterile low-grade inflammation. Adipose tissue undergoes diverse changes during aging, including fat depot redistribution, brown and beige fat decrease, functional decline of adipose progenitor and stem cells, senescent cell accumulation, and immune cell dysregulation. Specifically, inflammaging is common in aged adipose tissue. Adipose tissue inflammaging reduces adipose plasticity and pathologically contributes to adipocyte hypertrophy, fibrosis, and ultimately, adipose tissue dysfunction. Adipose tissue inflammaging also contributes to age-related diseases, such as diabetes, cardiovascular disease and cancer. There is an increased infiltration of immune cells into adipose tissue, and these infiltrating immune cells secrete proinflammatory cytokines and chemokines. Several important molecular and signaling pathways mediate the process, including JAK/STAT, NFκB and JNK, etc. The roles of immune cells in aging adipose tissue are complex, and the underlying mechanisms remain largely unclear. In this review, we summarize the consequences and causes of inflammaging in adipose tissue. We further outline the cellular/molecular mechanisms of adipose tissue inflammaging and propose potential therapeutic targets to alleviate age-related problems.
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Affiliation(s)
- Yi-Xiang Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min-Yi Ou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zi-Han Yang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Sun
- Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qing-Feng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuang-Bai Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Strieder-Barboza, Flesher CG, Geletka LM, Eichler T, Akinleye O, Ky A, Ehlers AP, Lumeng CN, O’Rourke RW. Lumican modulates adipocyte function in obesity-associated type 2 diabetes. Adipocyte 2022; 11:665-675. [PMID: 36457256 PMCID: PMC9728465 DOI: 10.1080/21623945.2022.2154112] [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: 06/16/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022] Open
Abstract
Obesity-associated type 2 diabetes (DM) leads to adipose tissue dysfunction. Lumican is a proteoglycan implicated in obesity, insulin resistance (IR), and adipocyte dysfunction. Using human visceral adipose tissue (VAT) from subjects with and without DM, we studied lumican effects on adipocyte function. Lumican was increased in VAT and adipocytes in DM. Lumican knockdown in adipocytes decreased lipolysis and improved adipogenesis and insulin sensitivity in VAT adipocytes in DM, while treatment with human recombinant lumican increased lipolysis and impaired insulin-sensitivity in an ERK-dependent manner. We demonstrate that lumican impairs adipocyte metabolism, partially via ERK signalling, and is a potential target for developing adipose tissue-targeted therapeutics in DM.
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Affiliation(s)
- Strieder-Barboza
- Department of Surgery , University of Michigan Medical School, MI, USA
- Department of Veterinary Sciences, Texas Tech University, Lubbock , TX, USA
- School of Veterinary Medicine, Texas Tech University, Amarillo, TX, USA
| | - Carmen G. Flesher
- Department of Surgery , University of Michigan Medical School, MI, USA
| | - Lynn M. Geletka
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, USA
| | - Tad Eichler
- Department of Surgery , University of Michigan Medical School, MI, USA
| | - Olukemi Akinleye
- Department of Surgery , University of Michigan Medical School, MI, USA
| | - Alexander Ky
- Department of Surgery , University of Michigan Medical School, MI, USA
| | - Anne P. Ehlers
- Department of Surgery , University of Michigan Medical School, MI, USA
- Department of Surgery, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - Carey N. Lumeng
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, USA
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI ,USA
- Graduate Program in Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Robert W. O’Rourke
- Department of Surgery , University of Michigan Medical School, MI, USA
- Department of Surgery, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
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Morais JBS, Dias TMDS, Cardoso BEP, de Paiva Sousa M, Sousa TGVD, Araújo DSCD, Marreiro DDN. Adipose Tissue Dysfunction: Impact on Metabolic Changes? Horm Metab Res 2022; 54:785-794. [PMID: 35952684 DOI: 10.1055/a-1922-7052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Adipose tissue is a metabolically dynamic organ that is the primary site of storage for excess energy, but it serves as an endocrine organ capable of synthesizing a number of biologically active compounds that regulate metabolic homeostasis. However, when the capacity of expansion of this tissue exceeds, dysfunction occurs, favoring ectopic accumulation of fat in the visceral, which has been implicated in several disease states, most notably obesity. This review highlights the mechanisms involved in the structure of adipose tissue, tissue expandability, adipocyte dysfunction, as well as the impact of these events on the manifestation of important metabolic disorders associated with adipose tissue dysfunction. A literature search using Pubmed, Web of Science, Scopus, and Cochrane databases were used to identify relevant studies, using clinical trials, experimental studies in animals and humans, case-control studies, case series, letters to the editor, and review articles published in English, without restrictions on year of publication. The excessive ectopic lipid accumulation leads to local inflammation and insulin resistance. Indeed, overnutrition triggers uncontrolled inflammatory responses white adipose tissue, leading to chronic low-grade inflammation, therefore fostering the progression of important metabolic disorders. Thus, it is essential to advance the understanding of the molecular mechanisms involved in adipose tissue dysfunction in order to mitigate the negative metabolic consequences of obesity.
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