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Al-Rashed F, AlSaeed H, Almansour N, Al-Mulla F, Hannun YA, Ahmad R. IL-6R (trans-signaling) is a key regulator of reverse cholesterol transport in lipid-laden macrophages. Clin Immunol 2024; 267:110351. [PMID: 39216780 PMCID: PMC11402558 DOI: 10.1016/j.clim.2024.110351] [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: 06/10/2024] [Revised: 08/14/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
Atherosclerosis is a cardiovascular disease caused by cholesterol-laden arterial plaques. This study evaluated the correlation between interleukin-6 (IL-6), its receptors (IL6R/CD126), and glycoprotein 130 (gp130) alongside atherosclerosis biomarkers in a cohort of 142 subjects, equally divided between lean and obese individuals. Subsequent analyses used THP-1-derived macrophages to assess the biochemical impact of inhibiting IL-6 receptors. IL-6 secretion increased with atherosclerosis in obese subjects, while IL6R/CD126 and gp130 on monocytes decreased. Pharmacological gp130 inhibition altered lipid metabolism, increasing LDLR gene expression and cholesterol synthesis via SREBF2 and mevalonate kinase, along with HMG-CoA reductase at protein levels. gp130-deficient cells produced more cholesterol and had lower ABCA1 levels, suggesting hindered cholesterol efflux. Filipin III staining confirmed cholesterol retention in gp130-inhibited cells. Ex-vivo investigation on lean PBMCs further defined the impact of gp130 inhibition on the reduction of cholesterol efflux. Our results indicates gp130 is crucial for macrophage reverse cholesterol transport and may be a target for atherosclerosis treatments.
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Affiliation(s)
- Fatema Al-Rashed
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, Dasman, Kuwait, PO BOX 1180, Dasman 15462, Kuwait.
| | - Halemah AlSaeed
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, Dasman, Kuwait, PO BOX 1180, Dasman 15462, Kuwait
| | - Nourah Almansour
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, Dasman, Kuwait, PO BOX 1180, Dasman 15462, Kuwait
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait, Kuwait
| | - Yusuf A Hannun
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Rasheed Ahmad
- Immunology and Microbiology Department, Dasman Diabetes Institute, Al-Soor Street, Dasman, Kuwait, PO BOX 1180, Dasman 15462, Kuwait
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2
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Letukienė A, Hendrixson V, Ginevičienė V. Current knowledge and scientific trends in myokines and exercise research in the context of obesity. Front Med (Lausanne) 2024; 11:1421962. [PMID: 39376657 PMCID: PMC11456489 DOI: 10.3389/fmed.2024.1421962] [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: 04/23/2024] [Accepted: 09/10/2024] [Indexed: 10/09/2024] Open
Abstract
The relationship between exercise and obesity has attracted increasing attention from researchers worldwide in recent years. The aim of the present study was to analyze the current knowledge and scientific trends of research into myokines and exercise in the context of obesity and provide ideas for future research strategies to prevent obesity. The study conducted a comprehensive bibliometric analysis of 300 scientific publications related to myokines, exercise, and obesity from 2004 to 2024. Applying the VOSviewer tool, the analysis revealed a significant increase over time in the number of publications on these topics, with a total of 1,142 related keywords identified. Key themes identified in the analysis included molecular processes, new organokines, skeletal muscle research, model organism studies, and human studies based on sex and age differences. The study highlighted the growing interest in the molecular mechanisms of obesity and role of myokines. Results showed a substantial increase in publications from 2014 to 2024, with a focus on new organokines (myokines, adipokines) and animal models. The analysis underscored the importance of myokines in modulating metabolic processes and their potential therapeutic implications in managing non-communicable diseases such as obesity. Furthermore, the study revealed the close relationship between exercise, myokine production, and regulation of metabolism, stress response, and inflammation. In conclusion, over the last years, increasing research interest has been focused on the molecular mechanisms of obesity and benefits of exercise, and probably will be focused on a set of myokines released during muscle contraction. A newly identified myokines has emerged as a promising marker for the prevention and control of obesity.
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Liu J, Chen Y. Cell-cell crosstalk between fat cells and immune cells. Am J Physiol Endocrinol Metab 2024; 327:E371-E383. [PMID: 39082899 DOI: 10.1152/ajpendo.00024.2024] [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: 01/12/2024] [Revised: 07/22/2024] [Accepted: 07/24/2024] [Indexed: 09/06/2024]
Abstract
Obesity is a metabolic disorder with pandemic-like implications, lacking viable pharmaceutical treatments currently. Thermogenic adipose tissues, including brown and beige adipose tissues, play an essential role in regulating systemic energy homeostasis and have emerged as appealing therapeutic targets for the treatment of obesity and obesity-related diseases. The function of adipocytes is subject to complex regulation by a cellular network of immune signaling pathways in response to environmental signals. However, the specific regulatory roles of immune cells in thermogenesis and relevant involving mechanisms are still not well understood. Here, we concentrate on our present knowledge of the interaction between thermogenic adipocytes and immune cells and present an overview of cellular and molecular mechanisms underlying immunometabolism in adipose tissues. We discuss cytokines, especially interleukins, which originate from widely variable sources, and their impacts on the development and function of thermogenic adipocytes. Moreover, we summarize the neuroimmune regulation in heat production and expand a new mode of intercellular communication mediated by mitochondrial transfer. The crosstalk between immune cells and adipocytes achieves adipose tissue homeostasis and systemic energy balance. A deep understanding of this intricate interaction would provide evidence for improving thermogenic efficiency by remodeling the immune microenvironment. Interventions based on these factors show a high potential to prevent adverse metabolic outcomes in patients with obesity.
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Affiliation(s)
- Jiadai Liu
- Department of Endocrinology, Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
- Laboratory of Endocrinology and Metabolism, Ministry of Education Key Laboratory of Vascular Aging, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yong Chen
- Department of Endocrinology, Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
- Laboratory of Endocrinology and Metabolism, Ministry of Education Key Laboratory of Vascular Aging, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, People's Republic of China
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Le Thuc O, García-Cáceres C. Obesity-induced inflammation: connecting the periphery to the brain. Nat Metab 2024; 6:1237-1252. [PMID: 38997442 DOI: 10.1038/s42255-024-01079-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 06/11/2024] [Indexed: 07/14/2024]
Abstract
Obesity is often associated with a chronic, low-grade inflammatory state affecting the entire body. This sustained inflammatory state disrupts the coordinated communication between the periphery and the brain, which has a crucial role in maintaining homeostasis through humoural, nutrient-mediated, immune and nervous signalling pathways. The inflammatory changes induced by obesity specifically affect communication interfaces, including the blood-brain barrier, glymphatic system and meninges. Consequently, brain areas near the third ventricle, including the hypothalamus and other cognition-relevant regions, become susceptible to impairments, resulting in energy homeostasis dysregulation and an elevated risk of cognitive impairments such as Alzheimer's disease and dementia. This Review explores the intricate communication between the brain and the periphery, highlighting the effect of obesity-induced inflammation on brain function.
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Affiliation(s)
- Ophélia Le Thuc
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Cristina García-Cáceres
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, Neuherberg, Germany.
- German Center for Diabetes Research (DZD), Neuherberg, Germany.
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany.
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Makioka-Itaya Y, Inoue R, Tsukahara T. Dysfunction of the Murine Liver with Aging and Its Improvement with the Continuous Consumption of Enterococcus faecalis EC-12. Nutrients 2024; 16:2031. [PMID: 38999780 PMCID: PMC11243158 DOI: 10.3390/nu16132031] [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: 05/23/2024] [Revised: 06/17/2024] [Accepted: 06/21/2024] [Indexed: 07/14/2024] Open
Abstract
Chronic inflammation is involved in the development of age-related diseases. Given its persistence, controlling chronic inflammation is essential for preventing age-related diseases. In this study, we investigated the effects of Enterococcus faecalis EC-12 (EC-12), which has immunomodulatory and antioxidant effects, on liver gene expression and aging phenomena in mice. Short-term EC-12 administration stimulated the expression of genes involved in lipid synthesis and metabolism in the liver. Furthermore, long-term EC-12 administration from 10 weeks to 1.5 years of age resulted in significant increases in blood interleukin (IL)-6 and IL-10 concentrations (both p < 0.05) and a significant decrease in the monocyte chemotactic protein-1 concentration (p < 0.05). These results indicated pathologic improvement, such as suppression of fat degeneration in the liver. These results suggest that continuous EC-12 intake from a young age can suppress liver function abnormalities, which is one of the aging phenomena in old age, and contribute to health in old age.
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Affiliation(s)
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Sciences, Setsunan University, Hirakata 573-0101, Japan;
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He W, Loganathan N, Tran A, Belsham DD. Npy transcription is regulated by noncanonical STAT3 signaling in hypothalamic neurons: Implication with lipotoxicity and obesity. Mol Cell Endocrinol 2024; 586:112179. [PMID: 38387703 DOI: 10.1016/j.mce.2024.112179] [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: 11/17/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024]
Abstract
Neuropeptide Y (Npy) is an abundant neuropeptide expressed in the central and peripheral nervous systems. NPY-secreting neurons in the hypothalamic arcuate nucleus regulate energy homeostasis, and Npy mRNA expression is regulated by peripheral nutrient and hormonal signals like leptin, interleukin-6 (IL-6), and fatty acids. This study demonstrates that IL-6, which phosphorylates tyrosine 705 (Y705) of STAT3, decreased Npy mRNA in arcuate immortalized hypothalamic neurons. In parallel, inhibitors of STAT3-Y705 phosphorylation, stattic and cucurbitacin I, robustly upregulated Npy mRNA. Chromatin-immunoprecipitation showed high baseline total STAT3 binding to multiple regulatory regions of the Npy gene, which are decreased by IL-6 exposure. The STAT3-Npy interaction was further examined in obesity-related pathologies. Notably, in four different hypothalamic neuronal models where palmitate potently stimulated Npy mRNA, Socs3, a specific STAT3 activity marker, was downregulated and was negatively correlated with Npy mRNA levels (R2 = 0.40, p < 0.001), suggesting that disrupted STAT3 signaling is involved in lipotoxicity-mediated dysregulation of Npy. Finally, human NPY SNPs that map to human obesity or body mass index were investigated for potential STAT3 binding sites. Although none of the SNPs were linked to direct STAT3 binding, analysis show that rs17149106 (-602 G > T) is located on an upstream enhancer element of NPY, where the variant is predicted to disrupt validated binding of KLF4, a known inhibitory cofactor of STAT3 and downstream effector of leptin signaling. Collectively, this study demonstrates that STAT3 signaling negatively regulates Npy transcription, and that disruption of this interaction may contribute to metabolic disorders.
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Affiliation(s)
- Wenyuan He
- Departments of Physiology, University of Toronto, Ontario, Canada
| | | | - Andy Tran
- Departments of Physiology, University of Toronto, Ontario, Canada
| | - Denise D Belsham
- Departments of Physiology, University of Toronto, Ontario, Canada; Departments of Medicine, University of Toronto, Ontario, Canada.
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Zhang X, Wang Q, Wang Y, Ma C, Zhao Q, Yin H, Li L, Wang D, Huang Y, Zhao Y, Shi X, Li X, Huang C. Interleukin-6 promotes visceral adipose tissue accumulation during aging via inhibiting fat lipolysis. Int Immunopharmacol 2024; 132:111906. [PMID: 38593501 DOI: 10.1016/j.intimp.2024.111906] [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: 11/03/2023] [Revised: 03/06/2024] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND Age-related visceral obesity could contribute to the development of cardiometabolic complications. The pathogenesis of visceral fat mass accumulation during the aging process remains complex and largely unknown. Interleukin-6 (IL-6) has emerged as one of the prominent inflammaging markers which are elevated in circulation during aging. However, the precise role of IL-6 in regulating age-related visceral adipose tissue accumulation remains uncertain. RESULTS A cross-sectional study including 77 older adults (≥65 years of age) was initially conducted. There was a significant positive association between serum IL-6 levels and visceral fat mass. We subsequently validated a modest but significant elevation in serum IL-6 levels in aged mice. Furthermore, we demonstrated that compared to wildtype control, IL-6 deficiency (IL-6 KO) significantly attenuated the accumulation of visceral adipose tissue during aging. Further metabolic characterization suggested that IL-6 deficiency resulted in improved lipid metabolism parameters and energy expenditure in aged mice. Moreover, histological examinations of adipose depots revealed that the absence of IL-6 ameliorated adipocyte hypertrophy in visceral adipose tissue of aged mice. Mechanically, the ablation of IL-6 could promote the PKA-mediated lipolysis and consequently mitigate lipid accumulation in adipose tissue in aged mice. CONCLUSION Our findings identify a detrimental role of IL-6 during the aging process by promoting visceral adipose tissue accumulation through inhibition of lipolysis. Therefore, strategies aimed at preventing or reducing IL-6 levels may potentially ameliorate age-related obesity and improve metabolism during aging.
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Affiliation(s)
- Xiaofang Zhang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Qingxuan Wang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Yaru Wang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Chen Ma
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Qing Zhao
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Hongyan Yin
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Long Li
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China; Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
| | - Dongmei Wang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China; Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361023, China
| | - Yinxiang Huang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Yan Zhao
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Xiulin Shi
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Xuejun Li
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China.
| | - Caoxin Huang
- Department of Endocrinology and Diabetes, Xiamen Diabetes Institute, Fujian Key Laboratory of Translational Research for Diabetes, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China.
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8
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Peng C, Lu Y, Li R, Zhang L, Liu Z, Xu X, Wang C, Hu R, Tan W, Zhou L, Wang Y, Yu L, Wang Y, Tang B, Jiang H. Neuroimmune modulation mediated by IL-6: A potential target for the treatment of ischemia-induced ventricular arrhythmias. Heart Rhythm 2024; 21:610-619. [PMID: 38160759 DOI: 10.1016/j.hrthm.2023.12.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/09/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Neural remodeling in the left stellate ganglion (LSG), as mediated by neuroimmune reactions, promotes cardiac sympathetic nerve activity (SNA) and thus increases the incidence of ventricular arrhythmias (VAs). Interleukin-6 (IL-6) is an important factor of the neuroimmune interaction. OBJECTIVE The present study explored the effects of IL-6 on LSG hyperactivity and the incidence of VAs. METHODS Eighteen beagles were randomly allocated to a control group (saline with myocardial infarction [MI], n = 6), adeno-associated virus (AAV) group (AAV with MI, n = 6), and IL-6 group (overexpression of IL-6 via AAV vector with MI, n = 6). Ambulatory electrocardiography was performed before and 30 days after AAV microinjection into the LSG. LSG function and ventricular electrophysiology were assessed at 31 days after surgery, and a canine MI model was established. Samples of the LSG were collected for immunofluorescence staining and molecular biological evaluation. Blood samples and 24-hour Holter data were obtained from 24 patients with acute MI on the day after they underwent percutaneous coronary intervention to assess the correlation between IL-6 levels and SNA. RESULTS IL-6 overexpression increased cardiac SNA and worsened postinfarction VAs. Furthermore, sustained IL-6 overexpression enhanced LSG function, promoted expression of nerve growth factor, c-fos, and fos B in the LSG, and activated the signal transducer and activator of transcription 3/regulator of G protein signalling 4 signaling pathway. Clinical sample analysis revealed a correlation between serum IL-6 levels and heart rate variability frequency domain index as well as T-wave alternans. CONCLUSION IL-6 levels are correlated with cardiac SNA. Chronic overexpression of IL-6 mediates LSG neural remodeling through the signal transducer and activator of transcription 3/regulator of G protein signalling 4 signaling pathway, elevating the risk of VA after MI.
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Affiliation(s)
- Chen Peng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Yanmei Lu
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Rui Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Ling Zhang
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Zhihao Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Xiao Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Changyi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Ruijie Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Wuping Tan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Liping Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Yueyi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Lilei Yu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Yuhong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Baopeng Tang
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Autonomic Nervous System Modulation, Wuhan, P.R. China; Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, P.R. China; Taikang Center for Life and Medical Sciences of Wuhan University, Wuhan, P.R. China; Hubei Key Laboratory of Cardiology, Wuhan, P.R. China; Cardiovascular Research Institute of Wuhan University, Wuhan, P.R. China; Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urmuqi, P.R. China.
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9
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Chrysostomou SE, Eder S, Pototschnig I, Mayer A, Derler M, Mussbacher M, Schauer S, Zhang D, Yan D, Liu G, Hoefler G, Weichhart T, Vesely PW, Zhang L, Schweiger M. R-ketorolac ameliorates cancer-associated cachexia and prolongs survival of tumour-bearing mice. J Cachexia Sarcopenia Muscle 2024; 15:562-574. [PMID: 38302863 PMCID: PMC10995265 DOI: 10.1002/jcsm.13422] [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: 02/24/2023] [Revised: 10/25/2023] [Accepted: 12/07/2023] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Cancer-associated cachexia (CAC) is a debilitating syndrome associated with poor quality of life and reduced life expectancy of cancer patients. CAC is characterized by unintended body weight reduction due to muscle and adipose tissue loss. A major hallmark of CAC is systemic inflammation. Several non-steroidal anti-inflammatory drugs (NSAIDs) have been suggested for CAC treatment, yet no single medication has proven reliable. R-ketorolac (RK) is the R-enantiomer of a commonly used NSAID. The effect of RK on CAC has not yet been evaluated. METHODS Ten- to 11-week-old mice were inoculated with C26 or CHX207 cancer cells or vehicle control (phosphate-buffered saline [PBS]). After cachexia onset, 2 mg/kg RK or PBS was administered daily by oral gavage. Body weight, food intake and tumour size were continuously measured. At study endpoints, blood was drawn, mice were sacrificed and tissues were excised. Immune cell abundance was analysed using a Cytek® Aurora spectral flow cytometer. Cyclooxygenase (COX) activity was determined in lung homogenates using a fluorometric kit. Muscle tissues were analysed for mRNA and protein expression by quantitative real-time PCR and western blotting analysis, respectively. Muscle fibre size was determined on histological slides after haematoxylin/eosin staining. RESULTS Ten-day survival rate of C26-bearing animals was 10% while RK treatment resulted in a 100% survival rate (P = 0.0009). Chemotherapy resulted in a 10% survival rate 14 days after treatment initiation, but all mice survived upon co-medication with RK and cyclophosphamide (P = 0.0001). Increased survival was associated with a protection from body weight loss in C26 (-0.61 ± 1.82 vs. -4.48 ± 2.0 g, P = 0.0004) and CHX207 (-0.49 ± 0.33 vs. -2.49 ± 0.93 g, P = 0.0003) tumour-bearing mice treated with RK, compared with untreated mice. RK ameliorated musculus quadriceps (-1.7 ± 7.1% vs. -27.8 ± 8.3%, P = 0.0007) and gonadal white adipose tissue (-18.8 ± 49% vs. -69 ± 15.6%, P = 0.094) loss in tumour-bearing mice, compared with untreated mice. Mechanistically, RK reduced circulating interleukin-6 (IL-6) concentrations from 334 ± 151 to 164 ± 123 pg/mL (P = 0.047) in C26 and from 93 ± 39 to 35 ± 6 pg/mL (P = 0.0053) in CHX207 tumour-bearing mice. Moreover, RK protected mice from cancer-induced T-lymphopenia (+1.8 ± 42% vs. -49.2 ± 12.1% in treated vs. untreated mice, respectively). RK was ineffective in ameliorating CAC in thymus-deficient nude mice, indicating that the beneficial effect of RK depends on T-cells. CONCLUSIONS RK improved T-lymphopenia and decreased systemic IL-6 concentrations, resulting in alleviation of cachexia and increased survival of cachexigenic tumour-bearing mice, even under chemotherapy and independent of COX inhibition. Considering its potential, we propose that the use of RK should be investigated in patients suffering from CAC.
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Affiliation(s)
| | - Sandra Eder
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
| | | | - Anna‐Lena Mayer
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
| | - Martina Derler
- Institute of Pharmaceutical SciencesUniversity of GrazGrazAustria
| | | | - Silvia Schauer
- Diagnostic and Research Institute of PathologyMedical University of GrazGrazAustria
| | | | - Dongmei Yan
- Department of ImmunologyJilin UniversityChangchunChina
| | | | - Gerald Hoefler
- Diagnostic and Research Institute of PathologyMedical University of GrazGrazAustria
- BioTechMed‐GrazGrazAustria
| | - Thomas Weichhart
- Institute of Medical GeneticsMedical University of ViennaViennaAustria
| | - Paul W. Vesely
- Diagnostic and Research Institute of PathologyMedical University of GrazGrazAustria
| | | | - Martina Schweiger
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
- BioTechMed‐GrazGrazAustria
- Field of Excellence BioHealth ‐ University of GrazGrazAustria
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10
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Liu J, Zaidi A, Pike CJ. Microglia/macrophage-specific deletion of TLR-4 protects against neural effects of diet-induced obesity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.13.580189. [PMID: 38405877 PMCID: PMC10888944 DOI: 10.1101/2024.02.13.580189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Obesity is associated with numerous adverse neural effects, including reduced neurogenesis, cognitive impairment, and increased risks for developing Alzheimer's disease (AD) and vascular dementia. Obesity is also characterized by chronic, low-grade inflammation that is implicated in mediating negative consequences body-wide. Toll-like receptor 4 (TLR4) signaling from peripheral macrophages is implicated as an essential regulator of the systemic inflammatory effects of obesity. In the brain, obesity drives chronic neuroinflammation that involves microglial activation, however the contributions of microglia-derived TLR4 signaling to the consequences of obesity are poorly understood. To investigate this issue, we first generated mice that carry an inducible, microglia/macrophage-specific deletion of TLR4 that yields long-term TLR4 knockout only in brain indicating microglial specificity. Next, we analyzed the effects of microglial TLR4 deletion on systemic and neural effects of a 16-week of exposure to control versus obesogenic high-fat diets. In male mice, TLR4 deletion generally yielded limited effects on diet-induced systemic metabolic dysfunction but significantly reduced neuroinflammation and impairments in neurogenesis and cognitive performance. In female mice maintained on obesogenic diet, TLR4 deletion partially protected against weight gain, adiposity, and metabolic impairments. Compared to males, females showed milder diet-induced neural consequences, against which TLR4 deletion was protective. Collectively, these findings demonstrate a central role of microglial TLR4 signaling in mediating the neural effects of obesogenic diet and highlight sexual dimorphic responses to both diet and TLR4.
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11
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Mattson MP, Leak RK. The hormesis principle of neuroplasticity and neuroprotection. Cell Metab 2024; 36:315-337. [PMID: 38211591 DOI: 10.1016/j.cmet.2023.12.022] [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: 07/17/2023] [Revised: 11/06/2023] [Accepted: 12/18/2023] [Indexed: 01/13/2024]
Abstract
Animals live in habitats fraught with a range of environmental challenges to their bodies and brains. Accordingly, cells and organ systems have evolved stress-responsive signaling pathways that enable them to not only withstand environmental challenges but also to prepare for future challenges and function more efficiently. These phylogenetically conserved processes are the foundation of the hormesis principle, in which single or repeated exposures to low levels of environmental challenges improve cellular and organismal fitness and raise the probability of survival. Hormetic principles have been most intensively studied in physical exercise but apply to numerous other challenges known to improve human health (e.g., intermittent fasting, cognitive stimulation, and dietary phytochemicals). Here we review the physiological mechanisms underlying hormesis-based neuroplasticity and neuroprotection. Approaching natural resilience from the lens of hormesis may reveal novel methods for optimizing brain function and lowering the burden of neurological disorders.
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Affiliation(s)
- Mark P Mattson
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Rehana K Leak
- Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
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12
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Zaporowska-Stachowiak I, Springer M, Stachowiak K, Oduah M, Sopata M, Wieczorowska-Tobis K, Bryl W. Interleukin-6 Family of Cytokines in Cancers. J Interferon Cytokine Res 2024; 44:45-59. [PMID: 38232478 DOI: 10.1089/jir.2023.0103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Abstract
Nine soluble ligands [interleukin-6 (IL-6), interleukin-11 (IL-11), leukemia inhibitory factor (LIF), oncostatin M (OSM), ciliary neurotrophic factor (CNTF), cardiotrophin-1 (CT-1), cardiotrophin-like cytokine, interleukin-27 (IL-27), and interleukin-31] share the ubiquitously expressed transmembrane protein-glycoprotein-130 beta-subunit (gp130) and thus form IL-6 family cytokines. Proteins that may be important for cancerogenesis, CT-1, IL-11, IL-27, LIF, OSM, and CNTF, belong to the superfamily of IL-6. Cytokines such as IL-6, IL-11, and IL-27 are better investigated in comparison with other members of the same family of cytokines, eg, CT-1. Gp130 is one of the main receptors through which these cytokines exert their effects. The clinical implication of understanding the pathways of these cytokines in oncology is that targeted therapy to inhibit or potentiate cytokine activity may lead to remission in some cases.
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Affiliation(s)
- Iwona Zaporowska-Stachowiak
- Department and Clinic of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland
- Palliative Medicine In-Patient Unit, University Hospital of Lord's Transfiguration, Poznan University of Medical Sciences, Poznan, Poland
| | - Michał Springer
- Department of Internal Diseases, Metabolic Disorders and Arterial Hypertension, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Mary Oduah
- English Students' Research Association, Poznan University of Medical Sciences, Poznan, Poland
| | - Maciej Sopata
- Department and Clinic of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland
- Palliative Medicine In-Patient Unit, University Hospital of Lord's Transfiguration, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Wieczorowska-Tobis
- Department and Clinic of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland
- Palliative Medicine In-Patient Unit, University Hospital of Lord's Transfiguration, Poznan University of Medical Sciences, Poznan, Poland
| | - Wiesław Bryl
- Department of Internal Diseases, Metabolic Disorders and Arterial Hypertension, Poznan University of Medical Sciences, Poznan, Poland
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13
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Król-Kulikowska M, Urbanowicz I, Kepinska M. The Concentrations of Interleukin-6, Insulin, and Glucagon in the Context of Obesity and Type 2 Diabetes and Single Nucleotide Polymorphisms in IL6 and INS Genes. J Obes 2024; 2024:7529779. [PMID: 38250713 PMCID: PMC10798838 DOI: 10.1155/2024/7529779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/11/2023] [Accepted: 12/30/2023] [Indexed: 01/23/2024] Open
Abstract
Obesity and diabetes are a problem of modern medicine. Although the environmental factors contributing to the development of these diseases are widely known, research into genetic factors is still ongoing. At the same time, the role of inflammation in the pathophysiology of obesity and diabetes is increasingly emphasized. Therefore, the purpose of this study was to investigate the influence of two selected polymorphisms (rs1800795 and rs3842729) on the development of obesity and type 2 diabetes. In this study, 118 participants were examined, including a control group (nonobese and nondiabetic group), an obese group, and a diabetic group. Genotype analysis was performed using the PCR-RFLP method. It has been shown that in patients with the G/G genotype within the rs1800795 polymorphism (IL6), the chance of developing type 2 diabetes is several times lower compared to patients with the G/C and C/C genotypes. However, the rs3842729 polymorphism (INS) does not directly affect the risk of obesity or type 2 diabetes (T2D), although elevated insulin concentrations have been observed in obese and diabetic patients. These results confirm the impact of the rs1800795 polymorphism on the development of diabetes; however, this relationship is more complex and requires further research on other factors.
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Affiliation(s)
- Magdalena Król-Kulikowska
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw 50-556, Poland
| | - Iwona Urbanowicz
- Department of Clinical Chemistry and Laboratory Hematology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw 50-556, Poland
| | - Marta Kepinska
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw 50-556, Poland
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14
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Hoffman JM, Robinson R, Greenway G, Glass J, Budkin S, Sharma S. Blockade of interleukin-6 trans-signaling prevents mitochondrial dysfunction and cellular senescence in retinal endothelial cells. Exp Eye Res 2023; 237:109721. [PMID: 37956941 PMCID: PMC10759313 DOI: 10.1016/j.exer.2023.109721] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/20/2023]
Abstract
Interleukin-6 (IL-6) is a multifaceted cytokine implicated in the pathogenesis of diabetic retinopathy (DR). Its activity extends through cis- and trans-signaling (TS) pathways, with cis-signaling limited to specific cell types possessing the membrane-bound IL-6 receptor, while trans-signaling broadly activates various cells without the membrane bound IL-6 receptor, including retinal endothelial cells. In this study, we determined the effects of interleukin-6 trans-signaling on mitochondrial dysfunction and cellular senescence in human retinal endothelial cells (HRECs). HRECs were cultured and treated with IL-6 + soluble IL-6R or Hyper IL-6 to activate trans-signaling, along with sgp130Fc for inhibition. RT-PCR was used to analyze gene expression changes associated with inflammation and senescence. Cellular senescence was assessed using SA β-gal staining. Mitochondrial function was evaluated using Seahorse XFe24 Bioanalyzer. IL-6 trans-signaling induced inflammatory gene expression as indicated by the upregulation of ICAM1, MCP1, and SERPINA3 levels. Additionally, it reduced mitochondrial respiration and oxidative phosphorylation, and these effects were counteracted by sgp130Fc. Moreover, IL-6 trans-signaling led to altered expression of apoptosis-associated genes, including downregulation of FIS1, BCL2, and MCL1, while promoting cellular senescence, a phenomenon mitigated by sgp130Fc. These results not only deepen our understanding of IL-6 in DR but also carry broader implications for age-related diseases and the aging process itself. This study underscores the potential therapeutic value of targeting IL-6 trans-signaling with sgp130Fc as a promising anti-inflammatory approach for DR and potentially other inflammatory conditions. Further in-vivo investigations are warranted to elucidate the function of IL-6 trans-signaling in aging-related pathologies and overall organismal health.
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Affiliation(s)
- Jessica M Hoffman
- Department of Biological Sciences, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA.
| | - Rebekah Robinson
- Center for Biotechnology and Genomic Medicine, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA
| | - Grace Greenway
- Center for Biotechnology and Genomic Medicine, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA
| | - Joshua Glass
- Center for Biotechnology and Genomic Medicine, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA
| | - Stepan Budkin
- Center for Biotechnology and Genomic Medicine, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA
| | - Shruti Sharma
- Center for Biotechnology and Genomic Medicine, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA; Department of Ophthalmology, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA.
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15
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Turpin T, Thouvenot K, Gonthier MP. Adipokines and Bacterial Metabolites: A Pivotal Molecular Bridge Linking Obesity and Gut Microbiota Dysbiosis to Target. Biomolecules 2023; 13:1692. [PMID: 38136564 PMCID: PMC10742113 DOI: 10.3390/biom13121692] [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: 10/13/2023] [Revised: 11/13/2023] [Accepted: 11/19/2023] [Indexed: 12/24/2023] Open
Abstract
Adipokines are essential mediators produced by adipose tissue and exert multiple biological functions. In particular, adiponectin, leptin, resistin, IL-6, MCP-1 and PAI-1 play specific roles in the crosstalk between adipose tissue and other organs involved in metabolic, immune and vascular health. During obesity, adipokine imbalance occurs and leads to a low-grade pro-inflammatory status, promoting insulin resistance-related diabetes and its vascular complications. A causal link between obesity and gut microbiota dysbiosis has been demonstrated. The deregulation of gut bacteria communities characterizing this dysbiosis influences the synthesis of bacterial substances including lipopolysaccharides and specific metabolites, generated via the degradation of dietary components, such as short-chain fatty acids, trimethylamine metabolized into trimethylamine-oxide in the liver and indole derivatives. Emerging evidence suggests that these bacterial metabolites modulate signaling pathways involved in adipokine production and action. This review summarizes the current knowledge about the molecular links between gut bacteria-derived metabolites and adipokine imbalance in obesity, and emphasizes their roles in key pathological mechanisms related to oxidative stress, inflammation, insulin resistance and vascular disorder. Given this interaction between adipokines and bacterial metabolites, the review highlights their relevance (i) as complementary clinical biomarkers to better explore the metabolic, inflammatory and vascular complications during obesity and gut microbiota dysbiosis, and (ii) as targets for new antioxidant, anti-inflammatory and prebiotic triple action strategies.
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Affiliation(s)
| | | | - Marie-Paule Gonthier
- Université de La Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97410 Saint-Pierre, La Réunion, France; (T.T.); (K.T.)
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16
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Ciryam P, Gerzanich V, Simard JM. Interleukin-6 in Traumatic Brain Injury: A Janus-Faced Player in Damage and Repair. J Neurotrauma 2023; 40:2249-2269. [PMID: 37166354 PMCID: PMC10649197 DOI: 10.1089/neu.2023.0135] [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] [Subscribe] [Scholar Register] [Indexed: 05/12/2023] Open
Abstract
Traumatic brain injury (TBI) is a common and often devastating illness, with wide-ranging public health implications. In addition to the primary injury, victims of TBI are at risk for secondary neurological injury by numerous mechanisms. Current treatments are limited and do not target the profound immune response associated with injury. This immune response reflects a convergence of peripheral and central nervous system-resident immune cells whose interaction is mediated in part by a disruption in the blood-brain barrier (BBB). The diverse family of cytokines helps to govern this communication and among these, Interleukin (IL)-6 is a notable player in the immune response to acute neurological injury. It is also a well-established pharmacological target in a variety of other disease contexts. In TBI, elevated IL-6 levels are associated with worse outcomes, but the role of IL-6 in response to injury is double-edged. IL-6 promotes neurogenesis and wound healing in animal models of TBI, but it may also contribute to disruptions in the BBB and the progression of cerebral edema. Here, we review IL-6 biology in the context of TBI, with an eye to clarifying its controversial role and understanding its potential as a target for modulating the immune response in this disease.
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Affiliation(s)
- Prajwal Ciryam
- Shock Trauma Neurocritical Care, Program in Trauma, R Adams Cowley Shock Trauma Center, University of Maryland Medical System, Baltimore, Maryland, USA
- Department of Neurology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Volodymyr Gerzanich
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - J. Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
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17
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Becker M, Joseph SS, Garcia-Carrizo F, Tom RZ, Opaleva D, Serr I, Tschöp MH, Schulz TJ, Hofmann SM, Daniel C. Regulatory T cells require IL6 receptor alpha signaling to control skeletal muscle function and regeneration. Cell Metab 2023; 35:1736-1751.e7. [PMID: 37734370 PMCID: PMC10563138 DOI: 10.1016/j.cmet.2023.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 02/27/2023] [Accepted: 08/31/2023] [Indexed: 09/23/2023]
Abstract
Muscle-residing regulatory T cells (Tregs) control local tissue integrity and function. However, the molecular interface connecting Treg-based regulation with muscle function and regeneration remains largely unexplored. Here, we show that exercise fosters a stable induction of highly functional muscle-residing Tregs with increased expression of amphiregulin (Areg), EGFR, and ST2. Mechanistically, we find that mice lacking IL6Rα on T cells (TKO) harbor significant reductions in muscle Treg functionality and satellite and fibro-adipogenic progenitor cells, which are required for muscle regeneration. Using exercise and sarcopenia models, IL6Rα TKO mice demonstrate deficits in Tregs, their functional maturation, and a more pronounced decline in muscle mass. Muscle injury models indicate that IL6Rα TKO mice have significant disabilities in muscle regeneration. Treg gain of function restores impaired muscle repair in IL6Rα TKO mice. Of note, pharmacological IL6R blockade in WT mice phenocopies deficits in muscle function identified in IL6Rα TKO mice, thereby highlighting the clinical implications of the findings.
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Affiliation(s)
- Maike Becker
- Research Unit Type 1 Diabetes Immunology, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany
| | - Sini S Joseph
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; Division of Metabolic Diseases, Department of Medicine, Technische Universität München, 80333 Munich, Germany
| | - Francisco Garcia-Carrizo
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke, 14558 Nuthetal, Germany
| | - Robby Z Tom
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Institute for Diabetes and Regeneration, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; Department of Medicine IV, University Hospital, LMU Munich, 80336 Munich, Germany
| | - Daria Opaleva
- Research Unit Type 1 Diabetes Immunology, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany
| | - Isabelle Serr
- Research Unit Type 1 Diabetes Immunology, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany
| | - Matthias H Tschöp
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Institute for Diabetes and Obesity, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; Division of Metabolic Diseases, Department of Medicine, Technische Universität München, 80333 Munich, Germany
| | - Tim J Schulz
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke, 14558 Nuthetal, Germany; University of Potsdam, Institute of Nutritional Science, Potsdam-Rehbrücke, 14558 Nuthetal, Germany
| | - Susanna M Hofmann
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Institute for Diabetes and Regeneration, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; Department of Medicine IV, University Hospital, LMU Munich, 80336 Munich, Germany
| | - Carolin Daniel
- Research Unit Type 1 Diabetes Immunology, Helmholtz Diabetes Center at Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany; German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany; Division of Clinical Pharmacology, Department of Medicine IV, Ludwig-Maximilians-Universität München, 80337 Munich, Germany.
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18
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Szűcs G, Pipicz M, Szabó MR, Csont T, Török L, Csonka C. Effect of Eccentric Exercise on Metabolic Health in Diabetes and Obesity. SPORTS MEDICINE - OPEN 2023; 9:91. [PMID: 37775653 PMCID: PMC10541389 DOI: 10.1186/s40798-023-00596-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/12/2023] [Indexed: 10/01/2023]
Abstract
There is a growing body of evidence showing the importance of physical activity against civilization-induced metabolic diseases, including type 2 diabetes (T2DM) and obesity. Eccentric contraction, when skeletal muscles generate force by lengthening, is a unique type of skeletal muscle activity. Eccentric contraction may lead to better power production characteristics of the muscle because eccentric contraction requires less energy and can result in higher tension. Therefore, it is an ideal tool in the rehabilitation program of patients. However, the complex metabolic effect (i.e., fat mass reduction, increased lipid oxidation, improvement in blood lipid profile, and increased insulin sensitivity) of the eccentric contraction alone has scarcely been investigated. This paper aims to review the current literature to provide information on whether eccentric contraction can influence metabolic health and body composition in T2DM or obesity. We also discussed the potential role of myokines in mediating the effects of eccentric exercise. A better understanding of the mechanism of eccentric training and particularly their participation in the regulation of metabolic diseases may widen their possible therapeutic use and, thereby, may support the fight against the leading global risks for mortality in the world.
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Affiliation(s)
- Gergő Szűcs
- Metabolic Diseases and Cell Signaling (MEDICS) Research Group, Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation of the University of Szeged, 6720, Szeged, Hungary
| | - Márton Pipicz
- Metabolic Diseases and Cell Signaling (MEDICS) Research Group, Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation of the University of Szeged, 6720, Szeged, Hungary
| | - Márton Richárd Szabó
- Metabolic Diseases and Cell Signaling (MEDICS) Research Group, Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation of the University of Szeged, 6720, Szeged, Hungary
| | - Tamás Csont
- Metabolic Diseases and Cell Signaling (MEDICS) Research Group, Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation of the University of Szeged, 6720, Szeged, Hungary
| | - László Török
- Department of Traumatology, Albert Szent-Györgyi Medical School, University of Szeged, Semmelweis utca 6, Szeged, 6720, Hungary
- Department of Sports Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Tisza Lajos krt. 107, Szeged, 6720, Hungary
| | - Csaba Csonka
- Metabolic Diseases and Cell Signaling (MEDICS) Research Group, Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary.
- Centre of Excellence for Interdisciplinary Research, Development and Innovation of the University of Szeged, 6720, Szeged, Hungary.
- Department of Sports Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Tisza Lajos krt. 107, Szeged, 6720, Hungary.
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Douglass JD, Ness KM, Valdearcos M, Wyse-Jackson A, Dorfman MD, Frey JM, Fasnacht RD, Santiago OD, Niraula A, Banerjee J, Robblee M, Koliwad SK, Thaler JP. Obesity-associated microglial inflammatory activation paradoxically improves glucose tolerance. Cell Metab 2023; 35:1613-1629.e8. [PMID: 37572666 PMCID: PMC10528677 DOI: 10.1016/j.cmet.2023.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/09/2023] [Accepted: 07/19/2023] [Indexed: 08/14/2023]
Abstract
Hypothalamic gliosis associated with high-fat diet (HFD) feeding increases susceptibility to hyperphagia and weight gain. However, the body-weight-independent contribution of microglia to glucose regulation has not been determined. Here, we show that reducing microglial nuclear factor κB (NF-κB) signaling via cell-specific IKKβ deletion exacerbates HFD-induced glucose intolerance despite reducing body weight and adiposity. Conversely, two genetic approaches to increase microglial pro-inflammatory signaling (deletion of an NF-κB pathway inhibitor and chemogenetic activation through a modified Gq-coupled muscarinic receptor) improved glucose tolerance independently of diet in both lean and obese rodents. Microglial regulation of glucose homeostasis involves a tumor necrosis factor alpha (TNF-α)-dependent mechanism that increases activation of pro-opiomelanocortin (POMC) and other hypothalamic glucose-sensing neurons, ultimately leading to a marked amplification of first-phase insulin secretion via a parasympathetic pathway. Overall, these data indicate that microglia regulate glucose homeostasis in a body-weight-independent manner, an unexpected mechanism that limits the deterioration of glucose tolerance associated with obesity.
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Affiliation(s)
- John D Douglass
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Kelly M Ness
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Martin Valdearcos
- The Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Alice Wyse-Jackson
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Mauricio D Dorfman
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Jeremy M Frey
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Rachael D Fasnacht
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Olivia D Santiago
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Anzela Niraula
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Jineta Banerjee
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Megan Robblee
- The Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Suneil K Koliwad
- The Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
| | - Joshua P Thaler
- UW Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98109, USA.
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20
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Ren J, Wang XQ, Nakao T, Libby P, Shi GP. Differential Roles of Interleukin-6 in Severe Acute Respiratory Syndrome-Coronavirus-2 Infection and Cardiometabolic Diseases. CARDIOLOGY DISCOVERY 2023; 3:166-182. [PMID: 38152628 PMCID: PMC10750760 DOI: 10.1097/cd9.0000000000000096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection can lead to a cytokine storm, unleashed in part by pyroptosis of virus-infected macrophages and monocytes. Interleukin-6 (IL-6) has emerged as a key participant in this ominous complication of COVID-19. IL-6 antagonists have improved outcomes in patients with COVID-19 in some, but not all, studies. IL-6 signaling involves at least 3 distinct pathways, including classic-signaling, trans-signaling, and trans-presentation depending on the localization of IL-6 receptor and its binding partner glycoprotein gp130. IL-6 has become a therapeutic target in COVID-19, cardiovascular diseases, and other inflammatory conditions. However, the efficacy of inhibition of IL-6 signaling in metabolic diseases, such as obesity and diabetes, may depend in part on cell type-dependent actions of IL-6 in controlling lipid metabolism, glucose uptake, and insulin sensitivity owing to complexities that remain to be elucidated. The present review sought to summarize and discuss the current understanding of how and whether targeting IL-6 signaling ameliorates outcomes following SARS-CoV-2 infection and associated clinical complications, focusing predominantly on metabolic and cardiovascular diseases.
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Affiliation(s)
- Jingjing Ren
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Xiao-Qi Wang
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Tetsushi Nakao
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Peter Libby
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Guo-Ping Shi
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
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21
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Korzun T, Moses AS, Diba P, Sattler AL, Taratula OR, Sahay G, Taratula O, Marks DL. From Bench to Bedside: Implications of Lipid Nanoparticle Carrier Reactogenicity for Advancing Nucleic Acid Therapeutics. Pharmaceuticals (Basel) 2023; 16:1088. [PMID: 37631003 PMCID: PMC10459564 DOI: 10.3390/ph16081088] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
In biomedical applications, nanomaterial-based delivery vehicles, such as lipid nanoparticles, have emerged as promising instruments for improving the solubility, stability, and encapsulation of various payloads. This article provides a formal review focusing on the reactogenicity of empty lipid nanoparticles used as delivery vehicles, specifically emphasizing their application in mRNA-based therapies. Reactogenicity refers to the adverse immune responses triggered by xenobiotics, including administered lipid nanoparticles, which can lead to undesirable therapeutic outcomes. The key components of lipid nanoparticles, which include ionizable lipids and PEG-lipids, have been identified as significant contributors to their reactogenicity. Therefore, understanding the relationship between lipid nanoparticles, their structural constituents, cytokine production, and resultant reactogenic outcomes is essential to ensure the safe and effective application of lipid nanoparticles in mRNA-based therapies. Although efforts have been made to minimize these adverse reactions, further research and standardization are imperative. By closely monitoring cytokine profiles and assessing reactogenic manifestations through preclinical and clinical studies, researchers can gain valuable insights into the reactogenic effects of lipid nanoparticles and develop strategies to mitigate undesirable reactions. This comprehensive review underscores the importance of investigating lipid nanoparticle reactogenicity and its implications for the development of mRNA-lipid nanoparticle therapeutics in various applications beyond vaccine development.
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Affiliation(s)
- Tetiana Korzun
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 S Moody Avenue, Portland, OR 97201, USA; (T.K.)
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Avenue, Portland, OR 97239, USA
- Medical Scientist Training Program, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
- Papé Family Pediatric Research Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Abraham S. Moses
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 S Moody Avenue, Portland, OR 97201, USA; (T.K.)
| | - Parham Diba
- Medical Scientist Training Program, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
- Papé Family Pediatric Research Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Ariana L. Sattler
- Papé Family Pediatric Research Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, 2720 S Moody Avenue, Portland, OR 97201, USA
- Brenden-Colson Center for Pancreatic Care, Oregon Health & Science University, 2730 S Moody Avenue, Portland, OR 97201, USA
| | - Olena R. Taratula
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 S Moody Avenue, Portland, OR 97201, USA; (T.K.)
| | - Gaurav Sahay
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 S Moody Avenue, Portland, OR 97201, USA; (T.K.)
| | - Oleh Taratula
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 S Moody Avenue, Portland, OR 97201, USA; (T.K.)
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Avenue, Portland, OR 97239, USA
| | - Daniel L. Marks
- Papé Family Pediatric Research Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, 2720 S Moody Avenue, Portland, OR 97201, USA
- Brenden-Colson Center for Pancreatic Care, Oregon Health & Science University, 2730 S Moody Avenue, Portland, OR 97201, USA
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22
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de Baat A, Trinh B, Ellingsgaard H, Donath MY. Physiological role of cytokines in the regulation of mammalian metabolism. Trends Immunol 2023:S1471-4906(23)00110-2. [PMID: 37423882 DOI: 10.1016/j.it.2023.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 07/11/2023]
Abstract
The innate cytokine system is involved in the response to excessive food intake. In this review, we highlight recent advances in our understanding of the physiological role of three prominent cytokines, interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF), in mammalian metabolic regulation. This recent research highlights the pleiotropic and context-dependent functions in the immune-metabolic interplay. IL-1β is activated in response to overloaded mitochondrial metabolism, stimulates insulin secretion, and allocates energy to immune cells. IL-6 is released by contracting skeletal muscle and adipose tissue and directs energy from storing tissues to consuming tissues. TNF induces insulin resistance and prevents ketogenesis. Additionally, the therapeutic potential of modulating the activity of each cytokine is discussed.
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Affiliation(s)
- Axel de Baat
- Clinic of Endocrinology, Diabetes and Metabolism University Hospital Basel, Basel, Switzerland; Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Beckey Trinh
- The Centre for Physical Activity Research, Rigshospitalet, Copenhagen, Denmark
| | - Helga Ellingsgaard
- The Centre for Physical Activity Research, Rigshospitalet, Copenhagen, Denmark
| | - Marc Y Donath
- Clinic of Endocrinology, Diabetes and Metabolism University Hospital Basel, Basel, Switzerland; Department of Biomedicine, University of Basel, Basel, Switzerland.
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23
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Amin A, Badenes M, Tüshaus J, de Carvalho É, Burbridge E, Faísca P, Trávníčková K, Barros A, Carobbio S, Domingos PM, Vidal-Puig A, Moita LF, Maguire S, Stříšovský K, Ortega FJ, Fernández-Real JM, Lichtenthaler SF, Adrain C. Semaphorin 4B is an ADAM17-cleaved adipokine that inhibits adipocyte differentiation and thermogenesis. Mol Metab 2023; 73:101731. [PMID: 37121509 PMCID: PMC10197113 DOI: 10.1016/j.molmet.2023.101731] [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: 10/11/2022] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/02/2023] Open
Abstract
OBJECTIVE The metalloprotease ADAM17 (also called TACE) plays fundamental roles in homeostasis by shedding key signaling molecules from the cell surface. Although its importance for the immune system and epithelial tissues is well-documented, little is known about the role of ADAM17 in metabolic homeostasis. The purpose of this study was to determine the impact of ADAM17 expression, specifically in adipose tissues, on metabolic homeostasis. METHODS We used histopathology, molecular, proteomic, transcriptomic, in vivo integrative physiological and ex vivo biochemical approaches to determine the impact of adipose tissue-specific deletion of ADAM17 upon adipocyte and whole organism metabolic physiology. RESULTS ADAM17adipoq-creΔ/Δ mice exhibited a hypermetabolic phenotype characterized by elevated energy consumption and increased levels of adipocyte thermogenic gene expression. On a high fat diet, these mice were more thermogenic, while exhibiting elevated expression levels of genes associated with lipid oxidation and lipolysis. This hypermetabolic phenotype protected mutant mice from obesogenic challenge, limiting weight gain, hepatosteatosis and insulin resistance. Activation of beta-adrenoceptors by the neurotransmitter norepinephrine, a key regulator of adipocyte physiology, triggered the shedding of ADAM17 substrates, and regulated ADAM17 expression at the mRNA and protein levels, hence identifying a functional connection between thermogenic licensing and the regulation of ADAM17. Proteomic studies identified Semaphorin 4B (SEMA4B), as a novel ADAM17-shed adipokine, whose expression is regulated by physiological thermogenic cues, that acts to inhibit adipocyte differentiation and dampen thermogenic responses in adipocytes. Transcriptomic data showed that cleaved SEMA4B acts in an autocrine manner in brown adipocytes to repress the expression of genes involved in adipogenesis, thermogenesis, and lipid uptake, storage and catabolism. CONCLUSIONS Our findings identify a novel ADAM17-dependent axis, regulated by beta-adrenoceptors and mediated by the ADAM17-cleaved form of SEMA4B, that modulates energy balance in adipocytes by inhibiting adipocyte differentiation, thermogenesis and lipid catabolism.
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Affiliation(s)
- Abdulbasit Amin
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal; Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Nigeria
| | - Marina Badenes
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal; Faculty of Veterinary Medicine, Lusofona University, Lisbon, Portugal; Faculty of Veterinary Nursing, Polytechnic Institute of Lusofonia, Lisbon, Portugal
| | - Johanna Tüshaus
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Érika de Carvalho
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal; Instituto de Tecnologia Química da Universidade Nova de Lisboa (ITQB-Nova), Oeiras, Portugal
| | - Emma Burbridge
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal; Patrick G Johnston Centre for Cancer Research, Queen's University, Belfast, N. Ireland
| | - Pedro Faísca
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal
| | - Květa Trávníčková
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - André Barros
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal
| | - Stefania Carobbio
- Centro de Investigacíon Principe Felipe (CIPF), Valencia, Spain; Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, UK
| | - Pedro M Domingos
- Instituto de Tecnologia Química da Universidade Nova de Lisboa (ITQB-Nova), Oeiras, Portugal
| | - Antonio Vidal-Puig
- Centro de Investigacíon Principe Felipe (CIPF), Valencia, Spain; Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, UK
| | - Luís F Moita
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal
| | - Sarah Maguire
- Patrick G Johnston Centre for Cancer Research, Queen's University, Belfast, N. Ireland
| | - Kvido Stříšovský
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Francisco J Ortega
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain; Department of Medical Sciences, University of Girona, Girona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), and Institute of Salud Carlos III (ISCIII), Madrid, Spain
| | - José Manuel Fernández-Real
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain; Department of Medical Sciences, University of Girona, Girona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), and Institute of Salud Carlos III (ISCIII), Madrid, Spain
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Colin Adrain
- Instituto Gulbenkian de Ciência (IGC), Oeiras, Portugal; Patrick G Johnston Centre for Cancer Research, Queen's University, Belfast, N. Ireland.
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24
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Wu O, Yuan C, Leng J, Zhang X, Liu W, Yang F, Zhang H, Li J, Khederzadeh S, Jiang Z, Fang H, Liu X, Lu X, Xia J. Colorable role of interleukin (IL)-6 in obesity hypertension: A hint from a Chinese adult case-control study. Cytokine 2023; 168:156226. [PMID: 37235887 DOI: 10.1016/j.cyto.2023.156226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 04/10/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND Obesity and hypertension are major risk factors for cardiovascular diseases that affect millions of people worldwide. Both conditions are associated with chronic low-grade inflammation, which is mediated by cytokines such as interleukin-6 (IL-6). IL-6 is a multifunctional cytokine that can have pro-inflammatory or anti-inflammatory effects depending on the context. The exact role of IL-6 in obesity-associated hypertension is unclear. OBJECTIVE To investigate how IL-6 affects blood pressure, inflammation, and metabolic function in obesity-hypertension using a Chinese adult case-control study. METHODS A total of 153 participants were sorted into four subgroups according to their body mass index (BMI) and blood pressure (BP): normal healthy group (NH), just obesity group (JO), just-hypertension group (JH), and obesity-hypertension group (OH). Serum IL-6 concentrations were measured by Enzyme-linked Immunosorbent Assay (ELISA) and their correlations with anthropometric and laboratory parameters and their differences across the subgroups were examined. Multiple linear regression analysis was performed to identify the predictors of serum IL-6 concentrations in each group. RESULTS Serum IL-6 concentrations were higher in NH group than in JO group and correlated positively with diastolic blood pressure in NH and JO groups, but not in JH and OH groups. Serum IL-6 concentrations also correlated with albumin in NH group, alkaline phosphatase in JO group, serum creatinine and fasting blood glucose in JH group. The influencing factors of serum IL-6 concentrations varied among the four groups, with gender, diastolic blood pressure and albumin being significant predictors in NH group, alkaline phosphatase in JO group, age and serum creatinine in JH group, and none in OH group. CONCLUSIONS These results suggest that IL-6 may play diverse effects in the pathogenesis of obesity- hypertension, depending on the presence or absence of obesity and hypertension. Further studies are needed to elucidate the underlying mechanisms of IL-6 signaling and function in these diseases.
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Affiliation(s)
- Ou Wu
- Shulan International Medical College, Zhejiang Shuren University, Zhejiang, China.
| | - Chengda Yuan
- Department of Dermatology, Hangzhou Hospital of Traditional Chinese Medicine, Hangzhou 310007, China
| | - Jianhang Leng
- Department of Central Laboratory/Medical examination center of Hangzhou, The Frist People's Hospital of Hangzhou, 310003, Zhejiang, China
| | - Xingyu Zhang
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Wei Liu
- JFIntelligent Healthcare Technology Co. Ltd, Building No.5-7, No.699 Tianxiang Avenue, Hi-Tech Zone, Nanchang, Jiangxi Province, China
| | - Fenfang Yang
- Department of Central Laboratory/Medical examination center of Hangzhou, The Frist People's Hospital of Hangzhou, 310003, Zhejiang, China
| | - Hu Zhang
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital Affiliated with Medical College of Zhejiang University, Zhejiang, China
| | - Jiajia Li
- Department of Central Laboratory, the First Affiliated Hospital of Anhui Medical University, Anhui, China
| | - Saber Khederzadeh
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China; Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
| | - Zhizhi Jiang
- ZhaNongKou Street Community Health Service Center, Hangzhou, Zhejiang, China
| | - Hangyan Fang
- Hangzhou Linping District Center for Disease Prevention and Control, zhejiang, China
| | - Xiaodong Liu
- Hangzhou center for disease control and prevention, Zhejiang, China
| | - Xi Lu
- Hangzhou Vocational and Technical College, Zhejiang, China.
| | - Jiangwei Xia
- Department of Neurology, Xuanwu Hospital, National Center for Neurological Disorders, Capital Medical University, Beijing, China; Beijing Municipal Geriatric Medical Research Center, Beijing, China.
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25
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Bai X, Zhao N, Koupourtidou C, Fang LP, Schwarz V, Caudal LC, Zhao R, Hirrlinger J, Walz W, Bian S, Huang W, Ninkovic J, Kirchhoff F, Scheller A. In the mouse cortex, oligodendrocytes regain a plastic capacity, transforming into astrocytes after acute injury. Dev Cell 2023:S1534-5807(23)00192-2. [PMID: 37220747 DOI: 10.1016/j.devcel.2023.04.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 02/16/2023] [Accepted: 04/25/2023] [Indexed: 05/25/2023]
Abstract
Acute brain injuries evoke various response cascades directing the formation of the glial scar. Here, we report that acute lesions associated with hemorrhagic injuries trigger a re-programming of oligodendrocytes. Single-cell RNA sequencing highlighted a subpopulation of oligodendrocytes activating astroglial genes after acute brain injuries. By using PLP-DsRed1/GFAP-EGFP and PLP-EGFPmem/GFAP-mRFP1 transgenic mice, we visualized this population of oligodendrocytes that we termed AO cells based on their concomitant activity of astro- and oligodendroglial genes. By fate mapping using PLP- and GFAP-split Cre complementation and repeated chronic in vivo imaging with two-photon laser-scanning microscopy, we observed the conversion of oligodendrocytes into astrocytes via the AO cell stage. Such conversion was promoted by local injection of IL-6 and was diminished by IL-6 receptor-neutralizing antibody as well as by inhibiting microglial activation with minocycline. In summary, our findings highlight the plastic potential of oligodendrocytes in acute brain trauma due to microglia-derived IL-6.
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Affiliation(s)
- Xianshu Bai
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany.
| | - Na Zhao
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Christina Koupourtidou
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Li-Pao Fang
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Veronika Schwarz
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Laura C Caudal
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Renping Zhao
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Johannes Hirrlinger
- Carl-Ludwig-Institute for Physiology, Leipzig University, 04103 Leipzig, Germany; Department of Neurogenetics, Max-Planck-Institute for Multidisciplinary Sciences, 37075 Göttingen, Germany
| | - Wolfgang Walz
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany; Department of Psychiatry, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Shan Bian
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 200092 Shanghai, China; Frontier Science Center for Stem Cell Research, Tongji University, 200092 Shanghai, China
| | - Wenhui Huang
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Jovica Ninkovic
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Frank Kirchhoff
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany; Experimental Research Center for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Anja Scheller
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany.
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26
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Tagorti G, Yalçın B, Güneş M, Burgazlı AY, Kaya B. Computational assessment of the biological response of curcumin to type 2 diabetes mellitus induced by metal exposure. Toxicology 2023; 491:153531. [PMID: 37121082 DOI: 10.1016/j.tox.2023.153531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/20/2023] [Accepted: 04/27/2023] [Indexed: 05/02/2023]
Abstract
The current study aimed to identify the molecular mechanisms of a metal mixture (cadmium, nickel, and lead) involved in type 2 diabetes mellitus (T2DM) development and the therapeutic effect of curcumin in this metal mixture-induced T2DM. To accomplish this, SwissADME assessed the physicochemical and pharmacokinetic properties of curcumin and the Prediction of Activity Spectra for Substances evaluates its biological activities. The Comparative Toxicogenomics Database, Cytoscape, AutoDock Vina, and MicroRNA ENrichment TURned NETwork were used as tools to perform data-mining approaches and molecular docking. Curcumin properties were fitted within the acceptable range to be a promising drug candidate. The mixed metal altered 23 genes linked to T2DM development and targeted by curcumin. Curcumin had a dual-natured effect or antagonistic effect for most of the involved genes in T2DM and metal mixture. The most prominent biological processes were identified as ''response to external stimulus'', ''regulation of programmed cell death'', ''programmed cell death'', ''cell death'', and ''response to stress''. Three highly interacted miRNAs related to metal mixture-induced T2DM and targeted by curcumin (hsa-miR-98-5p, hsa-miR-34a-5p, and hsa-miR-155-5p) were identified. These findings could pave the way for further studies to evaluate the link between these genes and T2DM.
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Affiliation(s)
- Ghada Tagorti
- Akdeniz University, Faculty of Sciences, Department of Biology, Campus, Antalya 07058, Turkey
| | - Burçin Yalçın
- Akdeniz University, Faculty of Sciences, Department of Biology, Campus, Antalya 07058, Turkey
| | - Merve Güneş
- Akdeniz University, Faculty of Sciences, Department of Biology, Campus, Antalya 07058, Turkey
| | - Ayşen Yağmur Burgazlı
- Akdeniz University, Faculty of Sciences, Department of Biology, Campus, Antalya 07058, Turkey
| | - Bülent Kaya
- Akdeniz University, Faculty of Sciences, Department of Biology, Campus, Antalya 07058, Turkey.
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Feraco A, Gorini S, Mammi C, Lombardo M, Armani A, Caprio M. Neutral Effect of Skeletal Muscle Mineralocorticoid Receptor on Glucose Metabolism in Mice. Int J Mol Sci 2023; 24:ijms24087412. [PMID: 37108574 PMCID: PMC10139152 DOI: 10.3390/ijms24087412] [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: 03/02/2023] [Revised: 04/07/2023] [Accepted: 04/09/2023] [Indexed: 04/29/2023] Open
Abstract
The mineralocorticoid receptor (MR) is able to regulate the transcription of a number of genes in the myotube, although its roles in skeletal muscle (SM) metabolism still await demonstration. SM represents a major site for glucose uptake, and its metabolic derangements play a pivotal role in the development of insulin resistance (IR). The aim of this study was to investigate the contribution of SM MR in mediating derangements of glucose metabolism in a mouse model of diet-induced obesity. We observed that mice fed a high-fat diet (HFD mice) showed impaired glucose tolerance compared to mice fed a normal diet (ND mice). Mice fed a 60% HFD treated with the MR antagonist Spironolactone (HFD + Spiro) for 12 weeks revealed an improvement in glucose tolerance, as measured with an intraperitoneal glucose tolerance test, compared with HFD mice. To investigate if blockade of SM MR could contribute to the favorable metabolic effects observed with pharmacological MR antagonism, we analyzed MR expression in the gastrocnemius, showing that SM MR protein abundance is downregulated by HFD compared to ND mice and that pharmacological treatment with Spiro was able to partially revert this effect in HFD + Spiro mice. Differently from what we have observed in adipose tissue, where HDF increased adipocyte MR expression, SM MR protein was down-regulated in our experimental model, suggesting a completely different role of SM MR in the regulation of glucose metabolism. To confirm this hypothesis, we investigated the effects of MR blockade on insulin signaling in a cellular model of IRin C2C12 myocytes, which were treated with or without Spiro. We confirmed MR protein downregulation in insulin-resistant myotubes. We also analyzed Akt phosphorylation upon insulin stimulation, and we did not observe any difference between palmitate- and palmitate + Spiro-treated cells. These results were confirmed by in vitro glucose uptake analysis. Taken together, our data indicate that reduced activity of SM MR does not improve insulin signaling in mouse skeletal myocytes and does not contribute to the favorable metabolic effects on glucose tolerance and IR induced by systemic pharmacological MR blockade.
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Affiliation(s)
- Alessandra Feraco
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00166 Rome, Italy
| | - Stefania Gorini
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00166 Rome, Italy
| | - Caterina Mammi
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00166 Rome, Italy
| | - Mauro Lombardo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
| | - Andrea Armani
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00166 Rome, Italy
| | - Massimiliano Caprio
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00166 Rome, Italy
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Hu Q, Zhang Y, Liu M, Wang B, Wang X, Wang T. Neonatal cytokines associated with infant overweight and obesity at 1 year of age. Obes Res Clin Pract 2023; 17:102-107. [PMID: 36935337 DOI: 10.1016/j.orcp.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 02/14/2023] [Accepted: 02/23/2023] [Indexed: 03/19/2023]
Abstract
OBJECTIVE The incidence of childhood overweight and obesity has been increasing in recent years. Immune dysregulation has been demonstrated as a condition related to childhood obesity. Whether the neonatal immune status is related to infant overweight and obesity at 1 year of age is unclear. METHODS To explore the relationship between neonatal cytokines and infant overweight and obesity, we conducted a prospective study in Suzhou Municipal Hospital Affiliated to Nanjing Medical University from 2015 to 2016. 514 neonates were recruited and their dried blood spots were collected after birth. Infants were grouped into normal size groups and overweight and obesity groups based on BMI at 1 year of age. 27 neonatal cytokines levels were compared between the two groups. RESULTS 370 infants were included in final analysis. Granulocyte colony stimulating factor (GCSF), interleukin-17A (IL17A) and platelet derived growth factor-BB (PDGF-BB) levels were independently associated with childhood overweight and obesity (OR =1.27, 95%CI 1.03, 1.57; OR =1.29, 95%CI: 1.06, 1.60; OR =0.69, 95%CI: 0.49, 0.96). Additionally, neonatal GCSF and IL17A levels were positively associated with increased BMI (β = 0.11, 95%CI: 0.02, 0.19; β = 0.07, 95%CI 0.01, 013) and BMI z-scores (β = 0.10, 95%CI: 0.02, 0.18; β = 0.06, 95%CI 0.01, 0.13). Neonatal PDGF-BB levels were negatively associated with BMI (β = -0.12, 95%CI: -0.23, -0.01) and BMI z-scores (β = -0.12, 95%CI: -0.23, -0.01). The inverse probability weighting (IPW) was performed to account for potential selection bias of this study, and the results were consistent with the above mentioned findings. CONCLUSIONS Neonatal GCSF, IL17A and PDGF-BB levels were correlated with infant overweight and obesity at 1 year of age, suggesting that early life immune status play a significant role of late obesity.
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Affiliation(s)
- Qi Hu
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Beilun District Center for Disease Control and Prevention, Ningbo 315899, China
| | - Yuqing Zhang
- Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China
| | - Minjuan Liu
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215000, China
| | - Benjing Wang
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215000, China
| | - Xu Wang
- Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Ting Wang
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215000, China.
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Vourdoumpa A, Paltoglou G, Charmandari E. The Genetic Basis of Childhood Obesity: A Systematic Review. Nutrients 2023; 15:1416. [PMID: 36986146 PMCID: PMC10058966 DOI: 10.3390/nu15061416] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/05/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023] Open
Abstract
Overweight and obesity in childhood and adolescence represents one of the most challenging public health problems of our century owing to its epidemic proportions and the associated significant morbidity, mortality, and increase in public health costs. The pathogenesis of polygenic obesity is multifactorial and is due to the interaction among genetic, epigenetic, and environmental factors. More than 1100 independent genetic loci associated with obesity traits have been currently identified, and there is great interest in the decoding of their biological functions and the gene-environment interaction. The present study aimed to systematically review the scientific evidence and to explore the relation of single-nucleotide polymorphisms (SNPs) and copy number variants (CNVs) with changes in body mass index (BMI) and other measures of body composition in children and adolescents with obesity, as well as their response to lifestyle interventions. Twenty-seven studies were included in the qualitative synthesis, which consisted of 7928 overweight/obese children and adolescents at different stages of pubertal development who underwent multidisciplinary management. The effect of polymorphisms in 92 different genes was assessed and revealed SNPs in 24 genetic loci significantly associated with BMI and/or body composition change, which contribute to the complex metabolic imbalance of obesity, including the regulation of appetite and energy balance, the homeostasis of glucose, lipid, and adipose tissue, as well as their interactions. The decoding of the genetic and molecular/cellular pathophysiology of obesity and the gene-environment interactions, alongside with the individual genotype, will enable us to design targeted and personalized preventive and management interventions for obesity early in life.
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Affiliation(s)
- Aikaterini Vourdoumpa
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, ‘Aghia Sophia’ Children’s Hospital, 11527 Athens, Greece
| | - George Paltoglou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, ‘Aghia Sophia’ Children’s Hospital, 11527 Athens, Greece
| | - Evangelia Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, ‘Aghia Sophia’ Children’s Hospital, 11527 Athens, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
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Obesity is associated with IL-6 gene polymorphisms rs1800795 and rs1800796 but not SOCS3 rs4969170. Mol Biol Rep 2023; 50:2041-2048. [PMID: 36538174 DOI: 10.1007/s11033-022-08129-y] [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: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 03/14/2023]
Abstract
BACKGROUND An imbalance of inflammatory factors can stimulate obesity by inducing chronic inflammation in adipose tissue. Interleukin-6 (IL-6) is a cytokine with both inflammatory and anti-inflammatory functions. Suppressor of cytokine signaling 3 (SOCS3) acts as an inhibitor for a number of cytokine signals. The IL-6 and SOCS3 genes are known to be involved in lipid and energy metabolism, although it is unclear how these genes relate to obesity. The aim of this study is to determine whether the obesity risk is associated with the IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) gene polymorphisms. METHODS AND RESULTS Based on their body mass index (BMI) scores, 185 people were determined, of whom 90 were from the control group and 95 were obese. Anthropometric measurements and biochemical parameters of the study subjects were documented during the examination. Genomic DNA isolation was performed from the blood samples of all participants. IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) polymorphisms were detected by real-time quantitative polymerase chain reaction (qRT-PCR) from genomic DNA samples. The IL-6 rs1800795 and rs1800796 variants showed a significant difference between the control and obese groups (p = 0.027; p = 0.013). The SOCS3 rs4969170 variation did not substantially differ between the control and obese groups (p = 0.825). CONCLUSION In our study, IL-6 rs1800795(G/C) and rs1800796(G/C) polymorphisms appeared to be a risk factor for obesity. The C allele was associated with the obesity phenotypes. However, the SOCS3 rs4969170 (A/G) polymorphism was not linked to an increased risk of obesity. IL-6 polymorphisms may be new targets for obesity treatment.
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Leng L, Yuan Z, Su X, Chen Z, Yang S, Chen M, Zhuang K, Lin H, Sun H, Li H, Xue M, Xu J, Yan J, Chen Z, Yuan T, Zhang J. Hypothalamic Menin regulates systemic aging and cognitive decline. PLoS Biol 2023; 21:e3002033. [PMID: 36928253 PMCID: PMC10019680 DOI: 10.1371/journal.pbio.3002033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 02/09/2023] [Indexed: 03/18/2023] Open
Abstract
Aging is a systemic process, which is a risk factor for impaired physiological functions, and finally death. The molecular mechanisms driving aging process and the associated cognitive decline are not fully understood. The hypothalamus acts as the arbiter that orchestrates systemic aging through neuroinflammatory signaling. Our recent findings revealed that Menin plays important roles in neuroinflammation and brain development. Here, we found that the hypothalamic Menin signaling diminished in aged mice, which correlates with systemic aging and cognitive deficits. Restoring Menin expression in ventromedial nucleus of hypothalamus (VMH) of aged mice extended lifespan, improved learning and memory, and ameliorated aging biomarkers, while inhibiting Menin in VMH of middle-aged mice induced premature aging and accelerated cognitive decline. We further found that Menin epigenetically regulates neuroinflammatory and metabolic pathways, including D-serine metabolism. Aging-associated Menin reduction led to impaired D-serine release by VMH-hippocampus neural circuit, while D-serine supplement rescued cognitive decline in aged mice. Collectively, VMH Menin serves as a key regulator of systemic aging and aging-related cognitive decline.
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Affiliation(s)
- Lige Leng
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
- * E-mail: (LL); (JZ)
| | - Ziqi Yuan
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xiao Su
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Zhenlei Chen
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Shangchen Yang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Meiqin Chen
- College of Basic Medicine, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Kai Zhuang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Hui Lin
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Hao Sun
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Huifang Li
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Maoqiang Xue
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Jun Xu
- Institute for AI in Medicine, School of Automation, Nanjing University of Information Science and Technology, Nanjing, China
| | - Jingqi Yan
- Center for Gene Regulation in Health and Disease, Cleveland State University, Cleveland, Ohio, United States of America
| | - Zhenyi Chen
- Department of Anesthesiology, First Affiliated Hospital of Xiamen University, Xiamen, Fujian, China
| | - Tifei Yuan
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai China
| | - Jie Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University, Xiamen, Fujian, China
- Department of Anesthesiology, First Affiliated Hospital of Xiamen University, Xiamen, Fujian, China
- * E-mail: (LL); (JZ)
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García-Hermoso A, Ramírez-Vélez R, Díez J, González A, Izquierdo M. Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials. JOURNAL OF SPORT AND HEALTH SCIENCE 2023; 12:147-157. [PMID: 36351545 PMCID: PMC10105032 DOI: 10.1016/j.jshs.2022.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/24/2022] [Accepted: 10/17/2022] [Indexed: 06/01/2023]
Abstract
BACKGROUND This study investigates the effects of exercise training on exerkines in patients with type 2 diabetes mellitus to determine the optimal exercise prescription. METHODS A systematic search for relevant studies was performed in 3 databases. Randomized controlled trials investigating the effects of exercise training on at least one of the following exerkines were included: adiponectin, apelin, brain-derived neurotrophic factor, fetuin-A, fibroblast growth factor-21, follistatin, ghrelin, interleukin (IL)-6, IL-8, IL-10, IL-15, IL-18, leptin, myostatin, omentin, resistin, retinol-binding protein 4, tumor necrosis factor-α, and visfatin. RESULTS Forty randomized controlled trials were selected for data extraction (n = 2160). Exercise training induces changes in adiponectin, fetuin-A, fibroblast growth factor-21, IL-6, IL-10, leptin, resistin, and tumor necrosis factor-α levels but has no significant effects on apelin, IL-18, and ghrelin compared to controls. Physical exercise training favored large and positive changes in pooled exerkines (i.e., an overall effect size calculated from several exerkines) (Hedge's g = 1.02, 95% confidence interval (95%CI): 0.76-1.28), which in turn were related to changes in glycated hemoglobin (mean difference (MD) = -0.81%, 95%CI: -0.95% to -0.67%), fasting glucose (MD = -23.43 mg/dL, 95%CI: -30.07 mg/dL to -16.80 mg/dL), waist circumference (MD = -3.04 cm, 95%CI: -4.02 cm to -2.07 cm), and body mass (MD = -1.93 kg, 95%CI: -2.00 kg to -1.86 kg). Slightly stronger effects were observed with aerobic, resistance, or high-intensity interval protocols at moderate- to vigorous-intensity and with programs longer than 24 weeks that comprise at least 3 sessions per week and more than 60 min per session. CONCLUSION Exercise training represents an anti-inflammatory therapy and metabolism-improving strategy with minimal side effects for patients with type 2 diabetes mellitus.
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Affiliation(s)
- Antonio García-Hermoso
- Navarrabiomed, Public University of Navarra (UPNA), Health Research Institute of Navarra (IdiSNA), University Hospital of Navarra, Pamplona 310008, Spain; CIBER of Frailty and Healthy Aging (CIBERFES), Carlos III Institute of Health, Madrid 28029, Spain.
| | - Robinson Ramírez-Vélez
- Navarrabiomed, Public University of Navarra (UPNA), Health Research Institute of Navarra (IdiSNA), University Hospital of Navarra, Pamplona 310008, Spain; CIBER of Frailty and Healthy Aging (CIBERFES), Carlos III Institute of Health, Madrid 28029, Spain; Institute for Health Research of Navarra (IDISNA), Pamplona 31008, Spain
| | - Javier Díez
- Institute for Health Research of Navarra (IDISNA), Pamplona 31008, Spain; Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona 31008, Spain; Centre for Biomedical Research in Cardiovascular Disease Network, Carlos III Institute of Health, Madrid 28029, Spain; Departments of Nephrology and Cardiology, University of Navarra Clinic, Pamplona 31008, Spain
| | - Arantxa González
- Institute for Health Research of Navarra (IDISNA), Pamplona 31008, Spain; Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona 31008, Spain; Centre for Biomedical Research in Cardiovascular Disease Network, Carlos III Institute of Health, Madrid 28029, Spain
| | - Mikel Izquierdo
- Navarrabiomed, Public University of Navarra (UPNA), Health Research Institute of Navarra (IdiSNA), University Hospital of Navarra, Pamplona 310008, Spain; CIBER of Frailty and Healthy Aging (CIBERFES), Carlos III Institute of Health, Madrid 28029, Spain; Institute for Health Research of Navarra (IDISNA), Pamplona 31008, Spain
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The Influence of Conventional and Innovative Rehabilitation Methods on Brain Plasticity Induction in Patients with Multiple Sclerosis. J Clin Med 2023; 12:jcm12051880. [PMID: 36902665 PMCID: PMC10003891 DOI: 10.3390/jcm12051880] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/15/2023] [Accepted: 02/25/2023] [Indexed: 03/08/2023] Open
Abstract
Physical rehabilitation and physical activity are known non-pharmacological methods of treating multiple sclerosis. Both lead to an improvement in physical fitness in patients with movement deficits while improving cognitive function and coordination. These changes occur through the induction of brain plasticity. This review presents the basics of the induction of brain plasticity in response to physical rehabilitation. It also analyzes the latest literature evaluating the impact of traditional physical rehabilitation methods, as well as innovative virtual reality-based rehabilitation methods, on the induction of brain plasticity in patients with multiple sclerosis.
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Müller SA, Shmueli MD, Feng X, Tüshaus J, Schumacher N, Clark R, Smith BE, Chi A, Rose-John S, Kennedy ME, Lichtenthaler SF. The Alzheimer's disease-linked protease BACE1 modulates neuronal IL-6 signaling through shedding of the receptor gp130. Mol Neurodegener 2023; 18:13. [PMID: 36810097 PMCID: PMC9942414 DOI: 10.1186/s13024-023-00596-6] [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: 08/09/2022] [Accepted: 01/11/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND The protease BACE1 is a major drug target for Alzheimer's disease, but chronic BACE1 inhibition is associated with non-progressive cognitive worsening that may be caused by modulation of unknown physiological BACE1 substrates. METHODS To identify in vivo-relevant BACE1 substrates, we applied pharmacoproteomics to non-human-primate cerebrospinal fluid (CSF) after acute treatment with BACE inhibitors. RESULTS Besides SEZ6, the strongest, dose-dependent reduction was observed for the pro-inflammatory cytokine receptor gp130/IL6ST, which we establish as an in vivo BACE1 substrate. Gp130 was also reduced in human CSF from a clinical trial with a BACE inhibitor and in plasma of BACE1-deficient mice. Mechanistically, we demonstrate that BACE1 directly cleaves gp130, thereby attenuating membrane-bound gp130 and increasing soluble gp130 abundance and controlling gp130 function in neuronal IL-6 signaling and neuronal survival upon growth-factor withdrawal. CONCLUSION BACE1 is a new modulator of gp130 function. The BACE1-cleaved, soluble gp130 may serve as a pharmacodynamic BACE1 activity marker to reduce the occurrence of side effects of chronic BACE1 inhibition in humans.
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Affiliation(s)
- Stephan A Müller
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Merav D Shmueli
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Xiao Feng
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Johanna Tüshaus
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | | | - Ryan Clark
- Neuroscience, Merck & Co. Inc., Boston, MA, USA
| | - Brad E Smith
- Laboratory Animal Resources, Merck & Co. Inc., West Point, PA, USA
| | - An Chi
- Chemical Biology, Merck & Co. Inc., Boston, MA, USA
| | | | | | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany. .,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany. .,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
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Heo J, Noble EE, Call JA. The role of exerkines on brain mitochondria: a mini-review. J Appl Physiol (1985) 2023; 134:28-35. [PMID: 36417200 PMCID: PMC9799148 DOI: 10.1152/japplphysiol.00565.2022] [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: 09/26/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/24/2022] Open
Abstract
Exercise benefits many organ systems, including having a panacea-like effect on the brain. For example, aerobic exercise improves cognition and attention and reduces the risk of brain-related diseases, such as dementia, stress, and depression. Recent advances suggest that endocrine signaling from peripheral systems, such as skeletal muscle, mediates the effects of exercise on the brain. Consequently, it has been proposed that factors secreted by all organs in response to physical exercise should be more broadly termed the "exerkines." Accumulating findings suggest that exerkines derived from skeletal muscle, liver, and adipose tissues directly impact brain mitochondrial function. Mitochondria play a pivotal role in regulating neuronal energy metabolism, neurotransmission, cell repair, and maintenance in the brain, and therefore exerkines may act via impacting brain mitochondria to improve brain function and disease resistance. Therefore, herein we review studies investigating the impact of muscle-, liver-, and adipose tissue-derived exerkines on brain cognitive and metabolic function via modulating mitochondrial bioenergetics, content, and dynamics under healthy and/or disease conditions.
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Affiliation(s)
- Junwon Heo
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia
| | - Emily E Noble
- Department of Nutritional Science, College of Family and Consumer Sciences, University of Georgia, Athens, Georgia
| | - Jarrod A Call
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, Georgia
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia
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Sahu B, Bal NC. Adipokines from white adipose tissue in regulation of whole body energy homeostasis. Biochimie 2023; 204:92-107. [PMID: 36084909 DOI: 10.1016/j.biochi.2022.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 08/08/2022] [Accepted: 09/01/2022] [Indexed: 02/06/2023]
Abstract
Diseases originating from altered energy homeostasis including obesity, and type 2 diabetes are rapidly increasing worldwide. Research in the last few decades on animal models and humans demonstrates that the white adipose tissue (WAT) is critical for energy balance and more than just an energy storage site. WAT orchestrates the whole-body metabolism through inter-organ crosstalk primarily mediated by cytokines named "Adipokines". The adipokines influence metabolism and fuel selection of the skeletal muscle and liver thereby fine-tuning the load on WAT itself in physiological conditions like starvation, exercise and cold. In addition, adipokine secretion is influenced by various pathological conditions like obesity, inflammation and diabetes. In this review, we have surveyed the current state of knowledge on important adipokines and their significance in regulating energy balance and metabolic diseases. Furthermore, we have summarized the interplay of pro-inflammatory and anti-inflammatory adipokines in the modulation of pathological conditions.
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Affiliation(s)
- Bijayashree Sahu
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024, India.
| | - Naresh C Bal
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024, India.
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Martínez-Colón GJ, Ratnasiri K, Chen H, Jiang S, Zanley E, Rustagi A, Verma R, Chen H, Andrews JR, Mertz KD, Tzankov A, Azagury D, Boyd J, Nolan GP, Schürch CM, Matter MS, Blish CA, McLaughlin TL. SARS-CoV-2 infection drives an inflammatory response in human adipose tissue through infection of adipocytes and macrophages. Sci Transl Med 2022; 14:eabm9151. [PMID: 36137009 PMCID: PMC9529056 DOI: 10.1126/scitranslmed.abm9151] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 09/09/2022] [Indexed: 01/11/2023]
Abstract
Obesity, characterized by chronic low-grade inflammation of the adipose tissue, is associated with adverse coronavirus disease 2019 (COVID-19) outcomes, yet the underlying mechanism is unknown. To explore whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection of adipose tissue contributes to pathogenesis, we evaluated COVID-19 autopsy cases and deeply profiled the response of adipose tissue to SARS-CoV-2 infection in vitro. In COVID-19 autopsy cases, we identified SARS-CoV-2 RNA in adipocytes with an associated inflammatory infiltrate. We identified two distinct cellular targets of infection: adipocytes and a subset of inflammatory adipose tissue-resident macrophages. Mature adipocytes were permissive to SARS-CoV-2 infection; although macrophages were abortively infected, SARS-CoV-2 initiated inflammatory responses within both the infected macrophages and bystander preadipocytes. These data suggest that SARS-CoV-2 infection of adipose tissue could contribute to COVID-19 severity through replication of virus within adipocytes and through induction of local and systemic inflammation driven by infection of adipose tissue-resident macrophages.
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Affiliation(s)
| | - Kalani Ratnasiri
- Program in Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Heping Chen
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Sizun Jiang
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Elizabeth Zanley
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Arjun Rustagi
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Renu Verma
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Han Chen
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jason R. Andrews
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Kirsten D. Mertz
- Institute of Pathology, Cantonal Hospital Baselland, 4410, Liestal, Switzerland
| | - Alexandar Tzankov
- Institute of Medical Genetics and Pathology, University Hospital of Basel, University of Basel, 4056, Basel, Switzerland
| | - Dan Azagury
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jack Boyd
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Garry P. Nolan
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Christian M. Schürch
- Department of Pathology and Neuropathology, University Hospital and Comprehensive Cancer Center Tübingen, 72070, Tübingen, Germany
| | - Matthias S. Matter
- Institute of Medical Genetics and Pathology, University Hospital of Basel, University of Basel, 4056, Basel, Switzerland
| | - Catherine A. Blish
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Program in Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Chan Zuckerberg Biohub, San Francisco, CA, 94158, USA
| | - Tracey L. McLaughlin
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
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Lv X, Gao F, Cao X. Skeletal interoception in bone homeostasis and pain. Cell Metab 2022; 34:1914-1931. [PMID: 36257317 PMCID: PMC9742337 DOI: 10.1016/j.cmet.2022.09.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 01/24/2023]
Abstract
Accumulating evidence indicates that interoception maintains proper physiological status and orchestrates metabolic homeostasis by regulating feeding behaviors, glucose balance, and lipid metabolism. Continuous skeletal remodeling consumes a tremendous amount of energy to provide skeletal scaffolding, support muscle movement, store vital minerals, and maintain a niche for hematopoiesis, which are processes that also contribute to overall metabolic balance. Although skeletal innervation has been described for centuries, recent work has shown that skeletal metabolism is tightly regulated by the nervous system and that skeletal interoception regulates bone homeostasis. Here, we provide a general discussion of interoception and its effects on the skeleton and whole-body metabolism. We also discuss skeletal interoception-mediated regulation in the context of pathological conditions and skeletal pain as well as future challenges to our understanding of these process and how they can be leveraged for more effective therapy.
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Affiliation(s)
- Xiao Lv
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Feng Gao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Xu Cao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA.
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Scherbakov VI, Skosyreva GA, Ryabichenko TI, Obukhova OO. Cytokines and regulation of glucose and lipid metabolism in the obesity. OBESITY AND METABOLISM 2022. [DOI: 10.14341/omet12863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The article presents data of the influence of cytokines of different directions of glucose and lipid metabolism in obesity. A change of the basic paradigm regarding adipose tissue has contributed to a number of recent discoveries. This concerns such basic concepts as healthy and diseased adipocytes, and, as a consequence, changes of their metabolism under the influence of cytokins. Distinguishing the concept of organokines demonstrates that despite the common features of cytokine regulation, each organ has its own specifics features of cytokine regulation, each organ has its own specific an important section of this concept is the idea of the heterogeneity of adipose tissue. Knowledge of the function of adipose tissue localized in different compartments of the body is expanding. There are date about the possibility of transition of one type of adipose tissue to another. A possible mechanism linking adipose tissue inflammation and the formation of insulin resistance (IR) is presented in this paper. The mechanism of IR development is closely connected with to proinflammatory cytokins disordering the insulin signal, accompanied by a decrease of the work of glucose transporters. A decrease of the income of glucose into cells leads to a change of glycolysis level to an increase of the fatty acids oxidation. Cytokins are able to participate in the process of the collaboration of some cells with others, that occurs both during physiological and pathological process.
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Affiliation(s)
- V. I. Scherbakov
- Federal Research Center of Fundamental and Translational Medicine
| | - G. A. Skosyreva
- Federal Research Center of Fundamental and Translational Medicine
| | | | - O. O. Obukhova
- Federal Research Center of Fundamental and Translational Medicine
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de Oliveira Micheletti T, Cassia dos Santos A, Rocha GZ, Silva VRR, Quaresma PGF, Assalin HB, Junqueira FS, Ropelle ER, Oliveira AG, Saad MJA, Prada PDO. Acute exercise reduces feeding by activating IL-6/Tubby axis in the mouse hypothalamus. Front Physiol 2022; 13:956116. [DOI: 10.3389/fphys.2022.956116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Acute exercise contributes to decreased feeding through leptin and interleukin/Janus kinase 2/signal transducers and activators of transcription 3 (IL-6/JAK2/STAT3) signaling. Considering the pleiotropic use of substrates by JAK2 and that JAK2 can phosphorylate the Tubby protein (TUB) in CHO-IR cells, we speculated that acute exercise can activate the IL-6/JAK2/TUB pathway to decrease food intake.Aims: We investigated whether acute exercise induced tyrosine phosphorylation and the association of TUB and JAK2 in the hypothalamus and if IL-6 is involved in this response, whether acute exercise increases the IL-6/TUB axis to regulate feeding, and if leptin has an additive effect over this mechanism.Methods: We applied a combination of genetic, pharmacological, and molecular approaches.Key findings: The in vivo experiments showed that acute exercise increased the tyrosine phosphorylation and association of JAK2/TUB in the hypothalamus, which reduced feeding. This response was dependent on IL-6. Leptin had no additive effect on this mechanism.Significance: The results of this study suggest a novel hypothalamic pathway by which IL-6 released by exercise regulates feeding and reinforces the beneficial effects of exercise.
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He W, Tran A, Chen CT, Loganathan N, Bazinet RP, Belsham DD. Oleate restores altered autophagic flux to rescue palmitate lipotoxicity in hypothalamic neurons. Mol Cell Endocrinol 2022; 557:111753. [PMID: 35981630 DOI: 10.1016/j.mce.2022.111753] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 07/29/2022] [Accepted: 08/10/2022] [Indexed: 01/18/2023]
Abstract
Accumulation of excess lipids in non-adipose tissues, such as the hypothalamus, is termed lipotoxicity and causative of free fatty acid-mediated pathology in metabolic disease. This study aimed to elucidate the molecular mechanisms behind oleate (OA)- and palmitate (PA)-mediated changes in hypothalamic neurons. Using the well-characterized hypothalamic neuronal cell model, mHypoE-46, we assessed gene changes through qRT-PCR, cell death with quantitative imaging, PA metabolism using stable isotope labeling, and cellular mechanisms using pharmacological modulation of lipid metabolism and autophagic flux. Palmitate (PA) disrupts gene expression, including Npy, Grp78, and Il-6 mRNA in mHypoE-46 hypothalamic neurons. Blocking PA metabolism using triacsin-C prevented the increase of these genes, implying that these changes depend on PA intracellular metabolism. Co-incubation with oleate (OA) is also potently protective and prevents cell death induced by increasing concentrations of PA. However, OA does not decrease U-13C-PA incorporation into diacylglycerol and phospholipids. Remarkably, OA can reverse PA toxicity even after significant PA metabolism and cellular impairment. OA can restore PA-mediated impairment of autophagy to prevent or reverse the accumulation of PA metabolites through lysosomal degradation, and not through other reported mechanisms. The autophagic flux inhibitor chloroquine (CQ) mimics PA toxicity by upregulating autophagy-related genes, Npy, Grp78, and Il-6, an effect partially reversed by OA. CQ also prevented the OA defense against PA toxicity, whereas the autophagy inducer rapamycin provided some protection. Thus, PA impairment of autophagic flux significantly contributes to its lipotoxicity, and OA-mediated protection requires functional autophagy. Overall, our results suggest that impairment of autophagy contributes to hypothalamic lipotoxicity.
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Affiliation(s)
- Wenyuan He
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Andy Tran
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Chuck T Chen
- Department of Nutritional Sciences, University of Toronto, Ontario, Canada
| | | | - Richard P Bazinet
- Department of Nutritional Sciences, University of Toronto, Ontario, Canada
| | - Denise D Belsham
- Department of Physiology, University of Toronto, Ontario, Canada; Department of Medicine, University of Toronto, Ontario, Canada; Department of Obstetrics and Gynaecology, University of Toronto, Ontario, Canada.
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Hu J, Zhang Y, Huang C, Feng X, He S, Zhang Y, Maze M. Interleukin-6 trans-signalling in hippocampal CA1 neurones mediates perioperative neurocognitive disorders in mice. Br J Anaesth 2022; 129:923-936. [DOI: 10.1016/j.bja.2022.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/30/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022] Open
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Roles of Interleukin-6-mediated immunometabolic reprogramming in COVID-19 and other viral infection-associated diseases. Int Immunopharmacol 2022; 110:109005. [PMID: 35780641 PMCID: PMC9236983 DOI: 10.1016/j.intimp.2022.109005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 01/08/2023]
Abstract
Interleukin-6 (IL-6) is a highly pleiotropic glycoprotein factor that can modulate innate and adaptive immunity as well as various aspects of metabolism, including glycolysis, fatty acid oxidation and oxidative phosphorylation. Recently, the expression and release of IL-6 is shown to be significantly increased in numerous diseases related to virus infection, and this increase is positively correlated with the disease severity. Immunity and metabolism are two highly integrated and interdependent systems, the balance between them plays a pivotal role in maintaining body homeostasis. IL-6-elicited inflammatory response is found to be closely associated with metabolic disorder in patients with viral infection. This brief review summarizes the regulatory role of IL-6 in immunometabolic reprogramming among seven viral infection-associated diseases.
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44
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Emerging evidence of the relationship between fat-free mass and ghrelin, glucagon-like peptide-1, and peptide-YY. Nutrition 2022; 103-104:111815. [DOI: 10.1016/j.nut.2022.111815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 06/28/2022] [Accepted: 08/03/2022] [Indexed: 11/24/2022]
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Katashima CK, de Oliveira Micheletti T, Braga RR, Gaspar RS, Goeminne LJE, Moura-Assis A, Crisol BM, Brícola RS, Silva VRR, de Oliveira Ramos C, da Rocha AL, Tavares MR, Simabuco FM, Matheus VA, Buscaratti L, Marques-Souza H, Pazos P, Gonzalez-Touceda D, Tovar S, del Carmen García M, Neto JCR, Curi R, Hirabara SM, Brum PC, Prada PO, de Moura LP, Pauli JR, da Silva ASR, Cintra DE, Velloso LA, Ropelle ER. Evidence for a neuromuscular circuit involving hypothalamic interleukin-6 in the control of skeletal muscle metabolism. SCIENCE ADVANCES 2022; 8:eabm7355. [PMID: 35905178 PMCID: PMC9337767 DOI: 10.1126/sciadv.abm7355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 06/15/2022] [Indexed: 05/31/2023]
Abstract
Hypothalamic interleukin-6 (IL6) exerts a broad metabolic control. Here, we demonstrated that IL6 activates the ERK1/2 pathway in the ventromedial hypothalamus (VMH), stimulating AMPK/ACC signaling and fatty acid oxidation in mouse skeletal muscle. Bioinformatics analysis revealed that the hypothalamic IL6/ERK1/2 axis is closely associated with fatty acid oxidation- and mitochondrial-related genes in the skeletal muscle of isogenic BXD mouse strains and humans. We showed that the hypothalamic IL6/ERK1/2 pathway requires the α2-adrenergic pathway to modify fatty acid skeletal muscle metabolism. To address the physiological relevance of these findings, we demonstrated that this neuromuscular circuit is required to underpin AMPK/ACC signaling activation and fatty acid oxidation after exercise. Last, the selective down-regulation of IL6 receptor in VMH abolished the effects of exercise to sustain AMPK and ACC phosphorylation and fatty acid oxidation in the muscle after exercise. Together, these data demonstrated that the IL6/ERK axis in VMH controls fatty acid metabolism in the skeletal muscle.
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Affiliation(s)
- Carlos Kiyoshi Katashima
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
| | - Thayana de Oliveira Micheletti
- Faculty of Medical Sciences, Department of Internal Medicine, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Renata Rosseto Braga
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
| | - Rodrigo Stellzer Gaspar
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Ludger J. E. Goeminne
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Alexandre Moura-Assis
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Barbara Moreira Crisol
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
| | - Rafael S. Brícola
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
| | - Vagner Ramon R. Silva
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
| | - Camila de Oliveira Ramos
- Laboratory of Nutritional Genomic, School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil
| | - Alisson L. da Rocha
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Pretol, São Paulo, Brazil
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mariana Rosolen Tavares
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Fernando Moreira Simabuco
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Valquiria Aparecida Matheus
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Lucas Buscaratti
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Henrique Marques-Souza
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Patricia Pazos
- Department of Physiology, Research Center of Molecular Medicine and Chronic Diseases (CIMUS) and CIBER Fisiopatología Obesidad y Nutrición (CB 06/03), Instituto de Salud Carlos III (ISCIII, Ministerio de Economía y Competitividad (MINECO), University of Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - David Gonzalez-Touceda
- Department of Physiology, Research Center of Molecular Medicine and Chronic Diseases (CIMUS) and CIBER Fisiopatología Obesidad y Nutrición (CB 06/03), Instituto de Salud Carlos III (ISCIII, Ministerio de Economía y Competitividad (MINECO), University of Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Sulay Tovar
- Department of Physiology, Research Center of Molecular Medicine and Chronic Diseases (CIMUS) and CIBER Fisiopatología Obesidad y Nutrición (CB 06/03), Instituto de Salud Carlos III (ISCIII, Ministerio de Economía y Competitividad (MINECO), University of Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - María del Carmen García
- Department of Physiology, Research Center of Molecular Medicine and Chronic Diseases (CIMUS) and CIBER Fisiopatología Obesidad y Nutrición (CB 06/03), Instituto de Salud Carlos III (ISCIII, Ministerio de Economía y Competitividad (MINECO), University of Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Jose Cesar Rosa Neto
- Immunometabolism Research Group, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-900, Brazil
| | - Rui Curi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-900, Brazil
- Institute of Physical Activity Sciences and Sports, Cruzeiro do Sul University, São Paulo 01506-000, Brazil
| | - Sandro Massao Hirabara
- Institute of Physical Activity Sciences and Sports, Cruzeiro do Sul University, São Paulo 01506-000, Brazil
| | - Patrícia Chakur Brum
- School of Physical Education and Sport, University of São Paulo (USP), São Paulo 05508-030, Brazil
| | - Patrícia Oliveira Prada
- Faculty of Medical Sciences, Department of Internal Medicine, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Leandro P. de Moura
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
- CEPECE—Center of Research in Sport Sciences, School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil
| | - José Rodrigo Pauli
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
- CEPECE—Center of Research in Sport Sciences, School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil
| | - Adelino S. R. da Silva
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Pretol, São Paulo, Brazil
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dennys Esper Cintra
- Laboratory of Nutritional Genomic, School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil
| | - Licio A. Velloso
- Faculty of Medical Sciences, Department of Internal Medicine, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Eduardo Rochete Ropelle
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeria, São Paulo 13484-350, Brazil
- Faculty of Medical Sciences, Department of Internal Medicine, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- CEPECE—Center of Research in Sport Sciences, School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil
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Abstract
Adipose tissue is a complex heterogeneous tissue composed of adipocytes along with several non-adipocyte populations, including blood, stromal, endothelial, and progenitor cells, as well as extracellular matrix (ECM) components. As obesity progresses, the adipose tissue expands dynamically through adipocyte hypertrophy and/or hyperplasia. This expansion requires continuous ECM remodeling to properly accommodate the size increase as well as functional changes. Upon reaching a hypertrophic threshold beyond the adipocyte buffering capacity, excess ECM components are deposited, causing fibrosis and ultimately resulting in unhealthy metabolic maladaptation. These complex ECM remodeling processes in adipose tissues are regulated by the local environment, several key mediators, and genetic factors that are closely linked to insulin sensitivity. It is crucial to understand how adipocytes interact with nonadipocyte populations and various mediators (i.e., immune cells, ECM components, and adipokines) during these processes. This mini-review provides an overview of the latest research into the biology of obesity-induced adipose tissue fibrosis and its related clinical manifestations, providing insight for further studies aimed at controlling metabolic syndrome and its comorbidities.
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Affiliation(s)
- Yutaka Hasegawa
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Iwate Medical University, Yahaba, Japan
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47
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Qiao Q, Bouwman FG, van Baak MA, Roumans NJT, Vink RG, Mariman ECM. Plasma Levels of Triglycerides and IL-6 Are Associated With Weight Regain and Fat Mass Expansion. J Clin Endocrinol Metab 2022; 107:1920-1929. [PMID: 35366329 PMCID: PMC9202711 DOI: 10.1210/clinem/dgac198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Long-term weight loss (WL) maintenance is the biggest challenge for overweight and obesity because of the almost unavoidable phenomenon of partial or even total weight regain (WR) after WL. OBJECTIVE In the present study we investigated the relations of (the changes of) adipocyte size and other risk biomarkers with WR during the follow-up of the Yoyo dietary intervention. METHODS In this randomized controlled study, 48 overweight/obese participants underwent a very-low-calorie diet to lose weight, followed by a weight-stable period of 4 weeks and a follow-up period of 9 months. Anthropometric measurements, adipocyte volume of abdominal subcutaneous adipose tissue, and plasma metabolic parameters (free fatty acids [FFAs], triglycerides [TGs], total cholesterol, glucose, insulin, homeostasis model assessment of insulin resistance [HOMA-IR], interleukin 6 [IL-6], angiotensin-converting enzyme [ACE] activity, retinol binding protein 4 [RBP4]) at the beginning and the end of follow-up were analyzed. RESULTS Our results show that changes of TGs, IL-6, HOMA-IR, and ACE are significantly positively correlated with WR. Multiple linear regression analysis shows that only TG and IL-6 changes remained significantly correlated with WR and increased body fat mass. Moreover, the change in HOMA-IR was tightly correlated with the change in TGs. Surprisingly, change in adipocyte volume during follow-up was not correlated with WR nor with other factors, but positive correlations between adipocyte volume and HOMA-IR were found at the beginning and end of the follow-up. CONCLUSION These results suggest that TGs and IL-6 are independently linked to WR via separate mechanisms, and that HOMA-IR and adipocyte volume may indirectly link to WR through the change of plasma TGs.
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Affiliation(s)
- Qi Qiao
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
| | - Freek G Bouwman
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
| | - Marleen A van Baak
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
| | - Nadia J T Roumans
- Institute for Technology-Inspired Regenerative Medicine, MERLN, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
| | - Roel G Vink
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
| | - Edwin C M Mariman
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, 6200 MD, Maastricht, the Netherlands
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Casagrande BP, Bueno AA, Pisani LP, Estadella D. Hepatic glycogen participates in the regulation of hypothalamic pAkt/Akt ratio in high-sugar/high-fat diet-induced obesity. Metab Brain Dis 2022; 37:1423-1434. [PMID: 35316448 DOI: 10.1007/s11011-022-00944-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/22/2022] [Indexed: 01/07/2023]
Abstract
The hypothalamus is a major integrating centre that controls energy homeostasis and plays a major role in hepatic glycogen (HGlyc) turnover. Not only do hypothalamic and hepatic Akt levels influence glucose homeostasis and glycogen synthesis, but exposure to high-sugar/high-fat diets (HSHF) can also lead to hypothalamic inflammation and HGlyc accumulation. HSHF withdrawal overall restores energy and glucose homeostasis, but the actual relationship between hypothalamic inflammation and HGlyc after short-term HSHF withdrawal has not yet been fully elucidated. Here we investigated the short-term effects of HSHF withdrawal preceded by a 30-day HSHF intake on the liver-hypothalamus crosstalk and glucose homeostasis. Sixty-day old male Wistar rats were fed for 30 days a control chow (n = 10) (Ct), or an HSHF diet (n = 20). On the 30th day of dietary intervention, a random HSHF subset (n = 10) had their diets switched to control chow for 48 h (Hw) whilst the remaining HSHF rats remained in the HSHF diet (n = 10) (Hd). All rats were anaesthetized and euthanized at the end of the protocol. We quantified HGlyc, Akt phosphorylation, inflammation and glucose homeostasis biomarkers. We also assessed the effect of propensity to obesity on those biomarkers, as detailed previously. Hd rats showed impaired glucose homeostasis, higher HGlyc and hypothalamic inflammation, and lower pAkt/Akt. Increased HGlyc was significantly associated with HSHF intake on pAkt/Akt lowered levels. We also found that HGlyc breakdown may have prevented a further pAkt/Akt drop after HSHF withdrawal. Propensity to obesity showed no apparent effect on hypothalamic inflammation or glucose homeostasis. Our findings suggest a comprehensive role of HGlyc as a structural and functional modulator of energy metabolism, and such roles may come into play relatively rapidly.
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Affiliation(s)
- Breno P Casagrande
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo-UNIFESP/BS, 1015-020, Santos, São Paulo, Brazil
| | - Allain A Bueno
- College of Health, Life and Environmental Sciences, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
| | - Luciana P Pisani
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo-UNIFESP/BS, 1015-020, Santos, São Paulo, Brazil
| | - Debora Estadella
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo-UNIFESP/BS, 1015-020, Santos, São Paulo, Brazil.
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Karcıoğlu Batur L, Savaş S, Girgin E, Hekim N. Association of the IL-6R gene polymorphic variant rs2228145(C>A) with IL-6 gene polymorphisms in a healthy cohort of Turkish population. Genes Immun 2022; 23:118-122. [PMID: 35338260 PMCID: PMC8956139 DOI: 10.1038/s41435-022-00167-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/03/2022] [Accepted: 03/09/2022] [Indexed: 11/22/2022]
Abstract
The main aim of this study was to investigate the relationship of the carriership of rs2228145 allelic variations of IL-6R with two other allelic variations in IL-6 gene at rs1800795 and rs1800796 loci and with the laboratory data of a healthy cohort of the Turkish population. The data of 121 healthy Turkish subjects (aged 12–84 years) including the past diseases, comorbidities were collected. The laboratory parameters were compared by the frequency of alleles of rs2228145 (C>A). The possible association of polymorphism at rs2228145 locus with the age, gender, and body mass index (BMI) and the frequencies of alleles of rs1800795 and rs1800796 polymorphisms were evaluated. The majority of the subjects had allele A at rs2228145 locus and allele G at rs1800796 locus. The number of white blood cells, platelets, neutrophils and monocytes were significantly higher in the subjects with allele C than those with allele A at rs2228145 locus (P < 0.05). The concentrations of total and direct bilirubin, iron, Sex Hormone Binding Globulin (SHBG) and folic acid of the subjects with allele C were significantly lower than those with allele A (P < 0.05). The uric acid and fasting insulin levels were higher in the subjects with allele C compared with those allele A (P = 0.04). The diversities of the hematological parameters, laboratory findings of liver function tests and renal panel and hormone levels may be explained by the variants of rs2228145 locus at IL-6R gene among healthy Turkish individuals.
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Affiliation(s)
- Lutfiye Karcıoğlu Batur
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Biruni University, Istanbul, Turkey.
| | | | | | - Nezih Hekim
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Biruni University, Istanbul, Turkey
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50
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Lombardo M, Feraco A, Bellia C, Prisco L, D’Ippolito I, Padua E, Storz MA, Lauro D, Caprio M, Bellia A. Influence of Nutritional Status and Physical Exercise on Immune Response in Metabolic Syndrome. Nutrients 2022; 14:nu14102054. [PMID: 35631195 PMCID: PMC9145042 DOI: 10.3390/nu14102054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/25/2022] Open
Abstract
Metabolic Syndrome (MetS) is a cluster of metabolic alterations mostly related to visceral adiposity, which in turn promotes glucose intolerance and a chronic systemic inflammatory state, characterized by immune cell infiltration. Such immune system activation increases the risk of severe disease subsequent to viral infections. Strong correlations between elevated body mass index (BMI), type-2-diabetes and increased risk of hospitalization after pandemic influenza H1N1 infection have been described. Similarly, a correlation between elevated blood glucose level and SARS-CoV-2 infection severity and mortality has been described, indicating MetS as an important predictor of clinical outcomes in patients with COVID-19. Adipose secretome, including two of the most abundant and well-studied adipokines, leptin and interleukin-6, is involved in the regulation of energy metabolism and obesity-related low-grade inflammation. Similarly, skeletal muscle hormones—called myokines—released in response to physical exercise affect both metabolic homeostasis and immune system function. Of note, several circulating hormones originate from both adipose tissue and skeletal muscle and display different functions, depending on the metabolic context. This review aims to summarize recent data in the field of exercise immunology, investigating the acute and chronic effects of exercise on myokines release and immune system function.
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Affiliation(s)
- Mauro Lombardo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
- Correspondence:
| | - Alessandra Feraco
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy
| | - Chiara Bellia
- Department of Biomedicine, Neurosciences, and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy;
| | - Luigi Prisco
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
| | - Ilenia D’Ippolito
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (I.D.); (D.L.)
| | - Elvira Padua
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
- School of Human Movement Science, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Maximilian Andreas Storz
- Department of Internal Medicine II, Center for Complementary Medicine, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany;
| | - Davide Lauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (I.D.); (D.L.)
| | - Massimiliano Caprio
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy
| | - Alfonso Bellia
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy; (A.F.); (L.P.); (E.P.); (M.C.); (A.B.)
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (I.D.); (D.L.)
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