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Sagliocchi S, Restolfer F, Cossidente A, Dentice M. The key roles of thyroid hormone in mitochondrial regulation, at interface of human health and disease. J Basic Clin Physiol Pharmacol 2024; 0:jbcpp-2024-0108. [PMID: 39023546 DOI: 10.1515/jbcpp-2024-0108] [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: 06/28/2024] [Accepted: 07/06/2024] [Indexed: 07/20/2024]
Abstract
Mitochondria are highly plastic and dynamic organelles long known as the powerhouse of cellular bioenergetics, but also endowed with a critical role in stress responses and homeostasis maintenance, supporting and integrating activities across multifaced cellular processes. As a such, mitochondria dysfunctions are leading causes of a wide range of diseases and pathologies. Thyroid hormones (THs) are endocrine regulators of cellular metabolism, regulating intracellular nutrients fueling of sugars, amino acids and fatty acids. For instance, THs regulate the balance between the anabolism and catabolism of all the macro-molecules, influencing energy homeostasis during different nutritional conditions. Noteworthy, not only most of the TH-dependent metabolic modulations act via the mitochondria, but also THs have been proved to regulate the mitochondrial biosynthesis, dynamics and function. The significance of such an interplay is different in the context of specific tissues and strongly impacts on cellular homeostasis. Thus, a comprehensive understanding of THs-dependent mitochondrial functions and dynamics is required to develop more precise strategies for targeting mitochondrial function. Herein, we describe the mechanisms of TH-dependent metabolic regulation with a focus on mitochondrial action, in different tissue contexts, thus providing new insights for targeted modulation of mitochondrial dynamics.
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Affiliation(s)
- Serena Sagliocchi
- Department of Clinical Medicine and Surgery, 165474 University of Naples "Federico II" , Naples, Italy
| | - Federica Restolfer
- Department of Clinical Medicine and Surgery, 165474 University of Naples "Federico II" , Naples, Italy
| | - Alessandro Cossidente
- Department of Clinical Medicine and Surgery, 165474 University of Naples "Federico II" , Naples, Italy
| | - Monica Dentice
- Department of Clinical Medicine and Surgery, 165474 University of Naples "Federico II" , Naples, Italy
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2
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Chen Y, Dong H, Qu B, Ma X, Lu L. Protective effect of higher free thyroxine levels within the reference range on biliary tract cancer risk: a multivariable mendelian randomization and mediation analysis. Front Endocrinol (Lausanne) 2024; 15:1379607. [PMID: 38686204 PMCID: PMC11056546 DOI: 10.3389/fendo.2024.1379607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/02/2024] [Indexed: 05/02/2024] Open
Abstract
Background Hepatobiliary cancer (HBC), including hepatocellular carcinoma (HCC) and biliary tract cancer (BTC), is currently one of the malignant tumors that mainly cause human death. Many HBCs are diagnosed in the late stage, which increases the disease burden, indicating that effective prevention strategies and identification of risk factors are urgent. Many studies have reported the role of thyroid hormones on HBC. Our research aims to assess the causal effects and investigate the mediation effects between thyroid function and HBC. Methods Utilizing the Mendelian randomization (MR) approach, the study employs single nucleotide polymorphisms (SNPs) as instrumental variables (IVs) to explore causal links between thyroid function [free thyroxine (FT4), thyroid stimulating hormone (TSH), hyperthyroidism and hypothyroidism] and HBC. Data were sourced from the ThyroidOmic consortium and FinnGen consortium. The analysis included univariable and multivariable MR analysis, followed by mediation analysis. Results The study found a significant causal association between high FT4 levels and the reduced risk of BTC, but not HCC. However, TSH, hyperthyroidism and hypothyroidism had no causal associations with the risk of HBC. Notably, we also demonstrated that only higher FT4 levels with the reference range (FT4-RR) could reduce the risk of BTC because this protective effect no longer existed under the conditions of hyperthyroidism or hypothyroidism. Finally, we found that the protective effect of FT4-RR on BTC was mediated partially by decreasing the risk of metabolic syndrome (MetS) and reducing the waist circumference (WC). Conclusion The findings suggest that higher FT4-RR may have a protective effect against BTC, which is partially mediated by decreased risk of MetS and a reduction in WC. This study highlights the potential role of FT4 in the pathogenesis of BTC and underscores that MetS and WC may play mediation effects as two mediators in this process.
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Affiliation(s)
- Yuxian Chen
- College of Medicine, Qingdao University, Qingdao, China
| | - Hao Dong
- College of Medicine, Qingdao University, Qingdao, China
| | - Baozhen Qu
- Qingdao Cancer Prevention and Treatment Research Institute, Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Hospital), Qingdao, China
| | - Xuezhen Ma
- Department of Oncology, Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Hospital), Qingdao, China
| | - LinLin Lu
- Qingdao Cancer Prevention and Treatment Research Institute, Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Hospital), Qingdao, China
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Petito G, Cioffi F, Magnacca N, de Lange P, Senese R, Lanni A. Adipose Tissue Remodeling in Obesity: An Overview of the Actions of Thyroid Hormones and Their Derivatives. Pharmaceuticals (Basel) 2023; 16:ph16040572. [PMID: 37111329 PMCID: PMC10146771 DOI: 10.3390/ph16040572] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/04/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Metabolic syndrome and obesity have become important health issues of epidemic proportions and are often the cause of related pathologies such as type 2 diabetes (T2DM), hypertension, and cardiovascular disease. Adipose tissues (ATs) are dynamic tissues that play crucial physiological roles in maintaining health and homeostasis. An ample body of evidence indicates that in some pathophysiological conditions, the aberrant remodeling of adipose tissue may provoke dysregulation in the production of various adipocytokines and metabolites, thus leading to disorders in metabolic organs. Thyroid hormones (THs) and some of their derivatives, such as 3,5-diiodo-l-thyronine (T2), exert numerous functions in a variety of tissues, including adipose tissues. It is known that they can improve serum lipid profiles and reduce fat accumulation. The thyroid hormone acts on the brown and/or white adipose tissues to induce uncoupled respiration through the induction of the uncoupling protein 1 (UCP1) to generate heat. Multitudinous investigations suggest that 3,3',5-triiodothyronine (T3) induces the recruitment of brown adipocytes in white adipose depots, causing the activation of a process known as "browning". Moreover, in vivo studies on adipose tissues show that T2, in addition to activating brown adipose tissue (BAT) thermogenesis, may further promote the browning of white adipose tissue (WAT), and affect adipocyte morphology, tissue vascularization, and the adipose inflammatory state in rats receiving a high-fat diet (HFD). In this review, we summarize the mechanism by which THs and thyroid hormone derivatives mediate adipose tissue activity and remodeling, thus providing noteworthy perspectives on their efficacy as therapeutic agents to counteract such morbidities as obesity, hypercholesterolemia, hypertriglyceridemia, and insulin resistance.
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Affiliation(s)
- Giuseppe Petito
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", 81100 Caserta, Italy
| | - Federica Cioffi
- Department of Sciences and Technologies, University of Sannio, 82100 Benevento, Italy
| | - Nunzia Magnacca
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", 81100 Caserta, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", 81100 Caserta, Italy
| | - Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", 81100 Caserta, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", 81100 Caserta, Italy
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4
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Gentile A, Magnacca N, de Matteis R, Moreno M, Cioffi F, Giacco A, Lanni A, de Lange P, Senese R, Goglia F, Silvestri E, Lombardi A. Ablation of uncoupling protein 3 affects interrelated factors leading to lipolysis and insulin resistance in visceral white adipose tissue. FASEB J 2022; 36:e22325. [PMID: 35452152 DOI: 10.1096/fj.202101816rr] [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: 11/25/2021] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 11/11/2022]
Abstract
The physiological role played by uncoupling protein 3 (UCP3) in white adipose tissue (WAT) has not been elucidated so far. In the present study, we evaluated the impact of the absence of the whole body UCP3 on WAT physiology in terms of ability to store triglycerides, oxidative capacity, response to insulin, inflammation, and adipokine production. Wild type (WT) and UCP3 Knockout (KO) mice housed at thermoneutrality (30°C) have been used as the animal model. Visceral gonadic WAT (gWAT) from KO mice showed an impaired capacity to store triglycerides (TG) as indicated by its lowered weight, reduced adipocyte diameter, and higher glycerol release (index of lipolysis). The absence of UCP3 reduces the maximal oxidative capacity of gWAT, increases mitochondrial free radicals, and activates ER stress. These processes are associated with increased levels of monocyte chemoattractant protein-1 and TNF-α. The response of gWAT to in vivo insulin administration, revealed by (ser473)-AKT phosphorylation, was blunted in KO mice, with a putative role played by eif2a, JNK, and inflammation. Variations in adipokine levels in the absence of UCP3 were observed, including reduced adiponectin levels both in gWAT and serum. As a whole, these data indicate an important role of UCP3 in regulating the metabolic functionality of gWAT, with its absence leading to metabolic derangement. The obtained results help to clarify some aspects of the association between metabolic disorders and low UCP3 levels.
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Affiliation(s)
| | - Nunzia Magnacca
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Rita de Matteis
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Maria Moreno
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Federica Cioffi
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Antonia Giacco
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Fernando Goglia
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Elena Silvestri
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Naples, Italy
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Louzada RA, Padron AS, Marques-Neto SR, Maciel L, Werneck-de-Castro JP, Ferreira ACF, Nascimento JHM, Carvalho DP. 3,5-Diiodothyronine protects against cardiac ischaemia-reperfusion injury in male rats. Exp Physiol 2021; 106:2185-2197. [PMID: 34605090 DOI: 10.1113/ep089589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/28/2021] [Indexed: 12/19/2022]
Abstract
NEW FINDINGS What is the central question of this study? 3,5-Diiodothyronine (3,5-T2) administration increases resting metabolic rate, prevents or treats liver steatosis in rodent models, and ameliorates insulin resistance: what are its effects on cardiac electrical and contractile properties and autonomic regulation? What is the main finding and its importance? Chronic 3,5-T2 administration has no adverse effects on cardiac function. Remarkably, 3,5-T2 improves the autonomous control of the rat heart and protects against ischaemia-reperfusion injury. ABSTRACT The use of 3,5,3'-triiodothyronine (T3) and thyroxine (T4) to treat metabolic diseases has been hindered by potential adverse effects on liver, lipid metabolism and cardiac electrical properties. It is recognized that 3,5-diiodothyronine (3,5-T2) administration increases resting metabolic rate, prevents or treats liver steatosis in rodent models and ameliorates insulin resistance, suggesting 3,5-T2 as a potential therapeutic tool. However, a comprehensive assessment of cardiac electrical and contractile properties has not been made so far. Three-month-old Wistar rats were daily administered vehicle, 3,5-T2 or 3,5-T2+T4 and no signs of atrial or ventricular arrhythmia were detected in non-anaesthetized rats during 90 days. Cardiac function was preserved as heart rate, left ventricle diameter and shortening fraction in 3,5-T2-treated rats compared to vehicle and 3,5-T2+T4 groups. Power spectral analysis indicated an amelioration of the heart rate variability only in 3,5-T2-treated rats. An increased baroreflex sensitivity at rest was observed in both 3,5-T2-treated groups. Finally, 3,5-T2 Langendorff-perfused hearts presented a significant recovery of left ventricular function and remarkably smaller infarction area after ischaemia-reperfusion injury. In conclusion, chronic 3,5-T2 administration ameliorates tonic cardiac autonomic control and confers cardioprotection against ischaemia-reperfusion injury in healthy male rats.
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Affiliation(s)
- Ruy Andrade Louzada
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Alvaro Souto Padron
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Silvio Rodrigues Marques-Neto
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Programa de Pós-Graduação em Ciências da Atividade Física, Niterói, RJ, Brazil.,Universidade Estácio de Sá (UNESA), Laboratório de Fisiologia do Exercício (LAFIEX), Curso de Educação Física, Rio de Janeiro, Brazil
| | - Leonardo Maciel
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,NUMPEX, Campus Duque de Caxias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - João Pedro Werneck-de-Castro
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Andrea Claudia Freitas Ferreira
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,NUMPEX, Campus Duque de Caxias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jose Hamilton Matheus Nascimento
- Laboratório de Eletrofisiologia Cardíaca Antonio Paes de Carvalho, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Denise Pires Carvalho
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Abstract
Obesity, an excess accumulation of white adipose tissue (WAT), has become a global epidemic and is associated with complex diseases, such as type 2 diabetes and cardiovascular diseases. Presently, there are no safe and effective therapeutic agents to treat obesity. In contrast to white adipocytes that store energy as triglycerides in unilocular lipid droplet, brown and brown-like or beige adipocytes utilize fatty acids (FAs) and glucose at a high rate mainly by uncoupling protein 1 (UCP1) action to uncouple mitochondrial proton gradient from ATP synthesis, dissipating energy as heat. Recent studies on the presence of brown or brown-like adipocytes in adult humans have revealed their potential as therapeutic targets in combating obesity. Classically, the main signaling pathway known to activate thermogenesis in adipocytes is β3-adrenergic signaling, which is activated by norepinephrine in response to cold, leading to activation of the thermogenic program and browning. In addition to the β3-adrenergic signaling, numerous other hormones and secreted factors have been reported to affect thermogenesis. In this review, we discuss several major pathways, β3-adrenergic, insulin/IGF1, thyroid hormone and TGFβ family, which regulate thermogenesis and browning of WAT.
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Affiliation(s)
| | - Hei Sook Sul
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, United States
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7
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Volke L, Krause K. Effect of Thyroid Hormones on Adipose Tissue Flexibility. Eur Thyroid J 2021; 10:1-9. [PMID: 33777816 PMCID: PMC7983599 DOI: 10.1159/000508483] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/05/2020] [Indexed: 12/18/2022] Open
Abstract
The recruitment and activation of energy-consuming brown adipocytes is currently considered as potential therapeutic approach to combat obesity. Thyroid hormones (TH) significantly contribute to full thermogenic capacity of brown adipocytes. A number of recent studies suggest that TH also induce the recruitment of brown adipocytes in white adipose depots, a process known as browning. In this review, we will summarize underlying mechanisms by which TH mediate brown adipose tissue activity and white adipose tissue browning. Furthermore, we will discuss the relevance of TH-induced white adipose tissue browning for thermoregulation.
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Affiliation(s)
- Lisa Volke
- Medical Department III-Endocrinology, Nephrology, and Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Kerstin Krause
- Medical Department III-Endocrinology, Nephrology, and Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Department of Medicine, University of Leipzig, Leipzig, Germany
- *Kerstin Krause, Department of Medicine, University of Leipzig, Liebigstrasse 21, DE–04103 Leipzig (Germany),
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Petito G, Cioffi F, Silvestri E, De Matteis R, Lattanzi D, de Lange P, Lombardi A, Moreno M, Goglia F, Lanni A, Senese R. 3,5-Diiodo-L-Thyronine (T2) Administration Affects Visceral Adipose Tissue Inflammatory State in Rats Receiving Long-Lasting High-Fat Diet. Front Endocrinol (Lausanne) 2021; 12:703170. [PMID: 34322094 PMCID: PMC8312549 DOI: 10.3389/fendo.2021.703170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/28/2021] [Indexed: 01/03/2023] Open
Abstract
3,5-diiodo-thyronine (T2), an endogenous metabolite of thyroid hormones, exerts beneficial metabolic effects. When administered to overweight rats receiving a high fat diet (HFD), it significantly reduces body fat accumulation, which is a risk factor for the development of an inflammatory state and of related metabolic diseases. In the present study, we focused our attention on T2 actions aimed at improving the adverse effects of long-lasting HFD such as the adipocyte inflammatory response. For this purpose, three groups of rats were used throughout: i) receiving a standard diet for 14 weeks; ii) receiving a HFD for 14 weeks, and iii) receiving a HFD for 14 weeks with a simultaneous daily injection of T2 for the last 4 weeks. The results showed that T2 administration ameliorated the expression profiles of pro- and anti-inflammatory cytokines, reduced macrophage infiltration in white adipose tissue, influenced their polarization and reduced lymphocytes recruitment. Moreover, T2 improved the expression of hypoxia markers, all altered in HFD rats, and reduced angiogenesis by decreasing the pro-angiogenic miR126 expression. Additionally, T2 reduced the oxidative damage of DNA, known to be associated to the inflammatory status. This study demonstrates that T2 is able to counteract some adverse effects caused by a long-lasting HFD and to produce beneficial effects on inflammation. Irisin and SIRT1 pathway may represent a mechanism underlying the above described effects.
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Affiliation(s)
- Giuseppe Petito
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli”, Caserta, Italy
| | - Federica Cioffi
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
- *Correspondence: Rosalba Senese, ; Federica Cioffi,
| | - Elena Silvestri
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Rita De Matteis
- Department of Biomolecular Sciences, Urbino University, Urbino, Italy
| | - Davide Lattanzi
- Department of Biomolecular Sciences, Urbino University, Urbino, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli”, Caserta, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Maria Moreno
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Fernando Goglia
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli”, Caserta, Italy
| | - Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli”, Caserta, Italy
- *Correspondence: Rosalba Senese, ; Federica Cioffi,
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Immunohistochemical Analysis of Intestinal and Central Nervous System Morphology in an Obese Animal Model ( Danio rerio) Treated with 3,5-T2: A Possible Farm Management Practice? Animals (Basel) 2020; 10:ani10071131. [PMID: 32635261 PMCID: PMC7401507 DOI: 10.3390/ani10071131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 12/22/2022] Open
Abstract
Simple Summary The obesity induced by overconsumption of nutrients leads to systemic inflammation and alters metabolic homeostasis by acting on central nervous system and peripheral tissues such as intestine. The 3,5-diiodo-L-thyronine (3,5-T2) is well-known for its positive role on fat mass and lipid metabolism, and at date, it is widely used as a drug for the treatment of obesity. However, the safe and effective dose as well as the possible adverse effects of this molecule have not been sufficiently explored. In this study, we analyzed the role of 3,5-T2 in regulating central and peripheral inflammation in diet-induced obese (D.I.O.) model of zebrafish. We found that 3,5-T2 sustained the intestinal alteration caused by D.I.O., as indicated by the high levels of pro-inflammatory cytokines, accompanied by a significant effect of 3,5-T2 on body weight and central inflammation in D.I.O. zebrafish. Therefore, the suggested potential use of 3,5-T2 to contrast obesity should be viewed with caution. We conclude that the zebrafish model can help to better understand the fundamental beneficial and side effects of 3,5-T2, which is of great importance to define the possible use of this metabolite of thyroid hormones as a drug in different diseases including obesity. Abstract The 3,5-diiodo-L-thyronine (3,5-T2) is an endogenous metabolite of thyroid hormones, whose administration to rodents fed high-fat diet (HFD) prevents body weight increase and reverts the expression pattern of pro-inflammatory factors associated to HFD. The diet-induced obese (D.I.O.) zebrafish (Danio rerio) has been recently used as an experimental model to investigate fundamental processes underlying central and peripheral obesity-driven inflammation. Herein, we aim to understand the role of 3,5-T2 in regulating central and peripheral inflammation in D.I.O. model of zebrafish. 3,5-T2 (10 nM and 100 nM) was administered with the obesity-inducing diet (D.I.O. with 3,5-T2) or after 4 weeks of obesity-inducing diet (D.I.O. flw 3,5-T2). 3,5-T2 significantly increased the body weight and serum triglyceride levels in D.I.O. zebrafish in both conditions. Moreover, 3,5-T2 sustained or increased inflammation in the anterior (AI) and mid (MI) intestine when administered with the obesity-inducing diet, as indicated by the immunoexpression of the inflammatory markers tumor-necrosis factor-α (TNFα), cyclooxygenase 2 (COX2), calnexin, caspase 3, and proliferating cell nuclear antigen (PCNA). On the contrary, when 3,5-T2 was administered after the obesity-inducing diet, partly reverted the intestinal alteration induced by D.I.O. In addition, brain inflammation, as indicated by the increase in the activation of microglia, was detected in D.I.O. zebrafish and D.I.O. treated with 3,5-T2. These findings reveal that the effects of 3,5-T2 on fish intestine and brain can deviate from those shown in obese mammals, opening new avenues to the investigation of the potential impact of this thyroid metabolite in different diseases including obesity.
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Giammanco M, Di Liegro CM, Schiera G, Di Liegro I. Genomic and Non-Genomic Mechanisms of Action of Thyroid Hormones and Their Catabolite 3,5-Diiodo-L-Thyronine in Mammals. Int J Mol Sci 2020; 21:ijms21114140. [PMID: 32532017 PMCID: PMC7312989 DOI: 10.3390/ijms21114140] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
Since the realization that the cellular homologs of a gene found in the retrovirus that contributes to erythroblastosis in birds (v-erbA), i.e. the proto-oncogene c-erbA encodes the nuclear receptors for thyroid hormones (THs), most of the interest for THs focalized on their ability to control gene transcription. It was found, indeed, that, by regulating gene expression in many tissues, these hormones could mediate critical events both in development and in adult organisms. Among their effects, much attention was given to their ability to increase energy expenditure, and they were early proposed as anti-obesity drugs. However, their clinical use has been strongly challenged by the concomitant onset of toxic effects, especially on the heart. Notably, it has been clearly demonstrated that, besides their direct action on transcription (genomic effects), THs also have non-genomic effects, mediated by cell membrane and/or mitochondrial binding sites, and sometimes triggered by their endogenous catabolites. Among these latter molecules, 3,5-diiodo-L-thyronine (3,5-T2) has been attracting increasing interest because some of its metabolic effects are similar to those induced by T3, but it seems to be safer. The main target of 3,5-T2 appears to be the mitochondria, and it has been hypothesized that, by acting mainly on mitochondrial function and oxidative stress, 3,5-T2 might prevent and revert tissue damages and hepatic steatosis induced by a hyper-lipid diet, while concomitantly reducing the circulating levels of low density lipoproteins (LDL) and triglycerides. Besides a summary concerning general metabolism of THs, as well as their genomic and non-genomic effects, herein we will discuss resistance to THs and the possible mechanisms of action of 3,5-T2, also in relation to its possible clinical use as a drug.
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Affiliation(s)
- Marco Giammanco
- Department of Surgical, Oncological and Oral Sciences (Discipline Chirurgiche, Oncologiche e Stomatologiche), University of Palermo, 90127 Palermo, Italy;
| | - Carlo Maria Di Liegro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)), University of Palermo, 90128 Palermo, Italy; (C.M.D.L.); (G.S.)
| | - Gabriella Schiera
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)), University of Palermo, 90128 Palermo, Italy; (C.M.D.L.); (G.S.)
| | - Italia Di Liegro
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (Bi.N.D.)), University of Palermo, 90127 Palermo, Italy
- Correspondence: ; Tel.: +39-091-2389-7415 or +39-091-2389-7446
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11
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D'Onofrio N, Cacciola NA, Martino E, Borrelli F, Fiorino F, Lombardi A, Neglia G, Balestrieri ML, Campanile G. ROS-Mediated Apoptotic Cell Death of Human Colon Cancer LoVo Cells by Milk δ-Valerobetaine. Sci Rep 2020; 10:8978. [PMID: 32488123 PMCID: PMC7265370 DOI: 10.1038/s41598-020-65865-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 05/11/2020] [Indexed: 12/11/2022] Open
Abstract
δ-Valerobetaine (δVB) is a constitutive milk metabolite with antioxidant and anti-inflammatory activities. Here, we tested the antineoplastic properties of milk δVB on human colorectal cancer cells. CCD 841 CoN (non-tumorigenic), HT-29 (p53 mutant adenocarcinoma) and LoVo (APC/RAS mutant adenocarcinoma) cells were exposed to 3 kDa milk extract, δVB (2 mM) or milk+δVB up to 72 h. Results showed a time- and dose-dependent capability of δVB to inhibit cancer cell viability, with higher potency in LoVo cells. Treatment with milk+δVB arrested cell cycle in G2/M and SubG1 phases by upregulating p21, cyclin A, cyclin B1 and p53 protein expressions. Noteworthy, δVB also increased necrosis (P < 0.01) and when used in combination with milk it improved its activity on live cell reduction (P < 0.05) and necrosis (P < 0.05). δVB-enriched milk activated caspase 3, caspase 9, Bax/Bcl-2 apoptotic pathway and reactive oxygen species (ROS) production, whereas no effects on ROS generation were observed in CCD 841 CoN cells. The altered redox homeostasis induced by milk+δVB was accompanied by upregulation of sirtuin 6 (SIRT6). SIRT6 silencing by small interfering RNA blocked autophagy and apoptosis activated by milk+δVB, unveiling the role of this sirtuin in the ROS-mediated apoptotic LoVo cell death.
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Affiliation(s)
- Nunzia D'Onofrio
- Department of Precision Medicine, University of Campania L. Vanvitelli, 80138, Naples, Italy
| | - Nunzio Antonio Cacciola
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, 80137, Naples, Italy
- Institute of Sustainable Plant Protection (IPSP), National Research Council (CNR), 80055, Naples, Italy
| | - Elisa Martino
- Department of Precision Medicine, University of Campania L. Vanvitelli, 80138, Naples, Italy
| | - Francesca Borrelli
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, 80131, Naples, Italy
| | - Ferdinando Fiorino
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, 80131, Naples, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, 80126, Naples, Italy
| | - Gianluca Neglia
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, 80137, Naples, Italy
| | - Maria Luisa Balestrieri
- Department of Precision Medicine, University of Campania L. Vanvitelli, 80138, Naples, Italy.
| | - Giuseppe Campanile
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, 80137, Naples, Italy
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12
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Yau WW, Yen PM. Thermogenesis in Adipose Tissue Activated by Thyroid Hormone. Int J Mol Sci 2020; 21:ijms21083020. [PMID: 32344721 PMCID: PMC7215895 DOI: 10.3390/ijms21083020] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 02/07/2023] Open
Abstract
Thermogenesis is the production of heat that occurs in all warm-blooded animals. During cold exposure, there is obligatory thermogenesis derived from body metabolism as well as adaptive thermogenesis through shivering and non-shivering mechanisms. The latter mainly occurs in brown adipose tissue (BAT) and muscle; however, white adipose tissue (WAT) also can undergo browning via adrenergic stimulation to acquire thermogenic potential. Thyroid hormone (TH) also exerts profound effects on thermoregulation, as decreased body temperature and increased body temperature occur during hypothyroidism and hyperthyroidism, respectively. We have termed the TH-mediated thermogenesis under thermoneutral conditions “activated” thermogenesis. TH acts on the brown and/or white adipose tissues to induce uncoupled respiration through the induction of the uncoupling protein (Ucp1) to generate heat. TH acts centrally to activate the BAT and browning through the sympathetic nervous system. However, recent studies also show that TH acts peripherally on the BAT to directly stimulate Ucp1 expression and thermogenesis through an autophagy-dependent mechanism. Additionally, THs can exert Ucp1-independent effects on thermogenesis, most likely through activation of exothermic metabolic pathways. This review summarizes thermogenic effects of THs on adipose tissues.
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Affiliation(s)
- Winifred W Yau
- Laboratory of Hormonal Regulation, Cardiovascular and Metabolic Disorders Program, Duke NUS Medical School, Singapore 169857, Singapore
| | - Paul M Yen
- Laboratory of Hormonal Regulation, Cardiovascular and Metabolic Disorders Program, Duke NUS Medical School, Singapore 169857, Singapore
- Duke Molecular Physiology Institute, Duke University, Durham, NC 27708, USA
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13
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Law JM, Morris DE, Astle V, Finn E, Muros JJ, Robinson LJ, Randell T, Denvir L, Symonds ME, Budge H. Brown Adipose Tissue Response to Cold Stimulation Is Reduced in Girls With Autoimmune Hypothyroidism. J Endocr Soc 2019; 3:2411-2426. [PMID: 31777769 PMCID: PMC6872489 DOI: 10.1210/js.2019-00342] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 10/04/2019] [Indexed: 01/15/2023] Open
Abstract
Objective The interaction between thyroid status and brown adipose tissue (BAT) activation is complex. We assessed the effect of autoimmune hypothyroidism (ATD) in female children on BAT activation, measured using infrared thermography. Design Twenty-six female participants (14 with ATD and 12 healthy controls) between 5 and 17 years of age attended a single study session. Thermal images were taken of the supraclavicular region before, and after, the introduction of a cool stimulus. Results Participants with ATD had lower resting (hypothyroid, 34.9 ± 0.7°C; control, 35.4 ± 0.5°C; P = 0.03) and stimulated (hypothyroid, 35.0 ± 0.6°C; control, 35.5 ± 0.5°C; P = 0.04) supraclavicular temperatures compared with controls, but there was no difference between groups in the temperature increase with stimulation. BAT activation, calculated as the relative temperature change comparing the supraclavicular temperature to a sternal reference region, was reduced in participants with ATD (hypothyroid, 0.1 ± 0.1°C; control, 0.2 ± 0.2°C; P = 0.04). Children with ATD were frequently biochemically euthyroid due to replacement therapy, but, despite this, increased relative supraclavicular temperature was closely associated with increased TSH (r = 0.7, P = 0.01) concentrations. Conclusions Girls with ATD had an attenuated thermogenic response to cold stimulation compared with healthy controls, but, contrary to expectation, those with suboptimal biochemical control (with higher TSH) showed increased BAT activation. This suggests that the underlying disease process may have a negative effect on BAT response, but high levels of TSH can mitigate, and even stimulate, BAT activity. In summary, thyroid status is a complex determinant of BAT activity in girls with ATD.
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Affiliation(s)
- James M Law
- Early Life Research Unit, Division of Child Health, Obstetrics and Gynaecology, University of Nottingham, Nottingham, United Kingdom
| | - David E Morris
- Bioengineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Valerie Astle
- Early Life Research Unit, Division of Child Health, Obstetrics and Gynaecology, University of Nottingham, Nottingham, United Kingdom
| | - Ellie Finn
- School of Medicine, Monash University, Melbourne, Victoria, Australia
| | - José Joaquín Muros
- Department of Food Science, School of Pharmacy, University of Granada, Granada, Spain
| | - Lindsay J Robinson
- Early Life Research Unit, Division of Child Health, Obstetrics and Gynaecology, University of Nottingham, Nottingham, United Kingdom
| | - Tabitha Randell
- Nottingham Children's Hospital, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Louise Denvir
- Nottingham Children's Hospital, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Michael E Symonds
- Early Life Research Unit, Division of Child Health, Obstetrics and Gynaecology, University of Nottingham, Nottingham, United Kingdom.,Nottingham Digestive Disease Centre and Biomedical Research Centre, University of Nottingham, Nottingham, United Kingdom
| | - Helen Budge
- Early Life Research Unit, Division of Child Health, Obstetrics and Gynaecology, University of Nottingham, Nottingham, United Kingdom
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14
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Senese R, Cioffi F, Petito G, Goglia F, Lanni A. Thyroid hormone metabolites and analogues. Endocrine 2019; 66:105-114. [PMID: 31359245 DOI: 10.1007/s12020-019-02025-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/18/2019] [Indexed: 12/17/2022]
Abstract
Several metabolic products that derive from L-thyroxine (T4) and 3,3'5-L-triiodothyronine (T3), the main thyroid hormones secreted by the thyroid gland, possess biologic activities. Among these metabolites or derivatives showing physiological actions some have received greater attention: diiodothyronines, iodothyronamines, acetic acid analogues. It is known that increased thyroid hormone (T3 and T4) levels can improve serum lipid profiles and reduce body fat. These positive effects are, however, counterbalanced by adverse effects on the heart, muscle and bone, limiting their use. In addition to the naturally occurring metabolites, thyroid hormone analogues have been developed that either have selective effects on specific tissues or bind selectively to thyroid hormone receptor (TR) isoform. Among these GC-1, KB141, KB2115, and DITPA were deeply investigated and displayed promising therapeutic results in the potential treatment of conditions such as dyslipidemias and obesity. In this review, we summarize the current knowledge of metabolites and analogues of T4 and T3 with reference to their possible clinical application in the treatment of human diseases.
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Affiliation(s)
- Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Federica Cioffi
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Giuseppe Petito
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Fernando Goglia
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy.
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15
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López-Fontana CM, Pennacchio G, Zyla LE, Toneatto J, Bruna FA, Ortiz N, Sassi PL, Santiano FE, García S, Sasso CV, Pietrobon EO, Jahn GA, Pistone Creydt V, Soaje M, Carón RW. Effects of hypothyroidism on the mesenteric and omental adipose tissue in rats. Mol Cell Endocrinol 2019; 490:88-99. [PMID: 31004687 DOI: 10.1016/j.mce.2019.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 04/14/2019] [Accepted: 04/15/2019] [Indexed: 12/27/2022]
Abstract
To characterize the influence of hypothyroidism on the endocrine activity of mesenteric and omental adipose tissue (MOAT) and the peripheral regulation of energy balance (EB) in rats, we analyzed food intake (FI); basal metabolic rate (BMR); locomotor activity; body weight (BW); serum hormone concentrations and the expression of their receptors in MOAT. We evaluated the morphology and differentiation of adipocytes. Hypothyroidism decreased FI, BMR and BW. The percentage of visceral white adipose tissue (WAT) depots and the morphology of adipocytes were similar to euthyroid rats. Serum leptin and adiponectin expression in MOAT were altered by hypothyroidism. The expression of Perilipin 1, HSL, UCP1 and PRDM16 was significantly lower in MOAT of hypothyroid animals. Hypothyroidism in rats leads to a compensated EB by inducing a white adipocyte dysfunction and a decrease in BW, BMR, FI and adipokine secretions without changing the percentage of WAT depots and the morphology of the MOAT.
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Affiliation(s)
- C M López-Fontana
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - G Pennacchio
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - L E Zyla
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - J Toneatto
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina.
| | - F A Bruna
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - N Ortiz
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - P L Sassi
- Instituto Argentino de Investigaciones de las Zonas Áridas (IADIZA), CONICET, CCT-Mendoza, Argentina.
| | - F E Santiano
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - S García
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - C V Sasso
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - E O Pietrobon
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - G A Jahn
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - V Pistone Creydt
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - M Soaje
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
| | - R W Carón
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), CONICET, CCT-Mendoza, Argentina.
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16
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Ježek P, Jabůrek M, Porter RK. Uncoupling mechanism and redox regulation of mitochondrial uncoupling protein 1 (UCP1). BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1860:259-269. [DOI: 10.1016/j.bbabio.2018.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 10/15/2018] [Accepted: 11/07/2018] [Indexed: 01/11/2023]
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17
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Di Gregorio I, Busiello RA, Burgos Aceves MA, Lepretti M, Paolella G, Lionetti L. Environmental Pollutants Effect on Brown Adipose Tissue. Front Physiol 2019; 9:1891. [PMID: 30687113 PMCID: PMC6333681 DOI: 10.3389/fphys.2018.01891] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 12/14/2018] [Indexed: 12/19/2022] Open
Abstract
Brown adipose tissue (BAT) with its thermogenic function due to the presence of the mitochondrial uncoupling protein 1 (UCP1), has been positively associated with improved resistance to obesity and metabolic diseases. During recent years, the potential influence of environmental pollutants on energetic homoeostasis and obesity development has drawn increased attention. The purpose of this review is to discuss how regulation of BAT function could be involved in the environmental pollutant effect on body energy metabolism. We mainly focused in reviewing studies on animal models, which provide a better insight into the cellular mechanisms involved in this effect on body energy metabolism. The current literature supports the hypothesis that some environmental pollutants, acting as endocrine disruptors (EDCs), such as dichlorodiphenyltrichoroethane (DDT) and its metabolite dichlorodiphenylethylene (DDE) as well as some, traffic pollutants, are associated with increased obesity risk, whereas some other chemicals, such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), had a reverse association with obesity. Noteworthy, the EDCs associated with obesity and metabolic disorders impaired BAT mass and function. Perinatal exposure to DDT impaired BAT thermogenesis and substrate utilization, increasing susceptibility to metabolic syndrome. Ambient particulate air pollutions induced insulin resistance associated with BAT mitochondrial dysfunction. On the other hand, the environmental pollutants (PFOS/PFOA) elicited a reduction in body weight and adipose mass associated with upregulation of UCP1 and increased oxidative capacity in brown-fat mitochondria. Further research is needed to better understand the physiological role of BAT in response to exposure to both obesogenic and anti-obesogenic pollutants and to confirm the same role in humans.
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Affiliation(s)
| | | | | | | | | | - Lillà Lionetti
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Fisciano, Italy
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18
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Giacco A, Delli Paoli G, Senese R, Cioffi F, Silvestri E, Moreno M, Ruoppolo M, Caterino M, Costanzo M, Lombardi A, Goglia F, Lanni A, de Lange P. The saturation degree of fatty acids and their derived acylcarnitines determines the direct effect of metabolically active thyroid hormones on insulin sensitivity in skeletal muscle cells. FASEB J 2018; 33:1811-1823. [PMID: 30204501 DOI: 10.1096/fj.201800724r] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Using differentiated rat L6 cells, we studied the direct effect of 3,5,3'-triiodo-l-thyronine (T3) and 3,5-diiodo-l-thyronine (T2) on the response to insulin in presence of fatty acids with a varying degree of saturation. We found that T3 and T2 both invert the response to insulin by modulating Akt Ser473 phosphorylation in the presence of palmitate and oleate. Both hormones prevented palmitate-induced insulin resistance, whereas increased insulin sensitivity in the presence of oleate was reduced, with normalization to (or, in the case of T3, even below) control levels. Both hormones effectively reduced intracellular acylcarnitine concentrations. Interestingly, insulin sensitization was lowered by incubation of the myotubes with relevant concentrations of palmitoylcarnitines (C16) and increased by oleylcarnitines and linoleylcarnitines (C18:1 and C18:2, respectively). The efficiency of mitochondrial respiration decreased in the order palmitate-oleate-linoleate; in the presence of palmitate, only T3 increased ATP synthesis-independent cellular respiration and mitochondrial respiratory complex activities. Both hormones modulated gene expression and enzyme activities related to insulin sensitivity, glucose metabolism, and lipid handling. Although T2 and T3 differentially regulated the expression of relevant genes involved in glucose metabolism, they equally stimulated related metabolic activities. T2 and T3 differentially modulated mitochondrial fatty acid uptake and oxidation in the presence of each fatty acid. The results show that T2 and T3 both invert the fatty acid-induced response to insulin but through different mechanisms, and that the outcome depends on the degree of saturation of the fatty acids and their derived acylcarnitines.-Giacco, A., delli Paoli, G., Senese, R., Cioffi, F., Silvestri, E., Moreno, M., Ruoppolo, M., Caterino, M., Costanzo, M., Lombardi, A., Goglia, F., Lanni, A., de Lange, P. The saturation degree of fatty acids and their derived acylcarnitines determines the direct effect of metabolically active thyroid hormones on insulin sensitivity in skeletal muscle cells.
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Affiliation(s)
- Antonia Giacco
- Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Giuseppe Delli Paoli
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania Luigi Vanvitelli, Caserta, Italy
| | - Rosalba Senese
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania Luigi Vanvitelli, Caserta, Italy
| | - Federica Cioffi
- Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Elena Silvestri
- Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Maria Moreno
- Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Margherita Ruoppolo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,Ceinge-Biotecnologie Avanzate, Naples, Italy.,Divulgazione Scientifica Multidisciplinare per la Sostenibilità Ricerca, Formazione, Cultura (DiSciMuS RCF), Naples, Italy
| | - Marianna Caterino
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,Ceinge-Biotecnologie Avanzate, Naples, Italy.,Divulgazione Scientifica Multidisciplinare per la Sostenibilità Ricerca, Formazione, Cultura (DiSciMuS RCF), Naples, Italy
| | - Michele Costanzo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,Ceinge-Biotecnologie Avanzate, Naples, Italy.,Divulgazione Scientifica Multidisciplinare per la Sostenibilità Ricerca, Formazione, Cultura (DiSciMuS RCF), Naples, Italy
| | - Assunta Lombardi
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Fernando Goglia
- Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Antonia Lanni
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania Luigi Vanvitelli, Caserta, Italy
| | - Pieter de Lange
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania Luigi Vanvitelli, Caserta, Italy
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19
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Louzada RA, Carvalho DP. Similarities and Differences in the Peripheral Actions of Thyroid Hormones and Their Metabolites. Front Endocrinol (Lausanne) 2018; 9:394. [PMID: 30072951 PMCID: PMC6060242 DOI: 10.3389/fendo.2018.00394] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/26/2018] [Indexed: 01/16/2023] Open
Abstract
Thyroxine (T4) and 3,5,3'-triiodothyronine (T3) are secreted by the thyroid gland, while T3 is also generated from the peripheral metabolism of T4 by iodothyronine deiodinases types I and II. Several conditions like stress, diseases, and physical exercise can promote changes in local TH metabolism, leading to different target tissue effects that depend on the presence of tissue-specific enzymatic activities. The newly discovered physiological and pharmacological actions of T4 and T3 metabolites, such as 3,5-diiodothyronine (3,5-T2), and 3-iodothyronamine (T1AM) are of great interest. A classical thyroid hormone effect is the ability of T3 to increase oxygen consumption in almost all cell types studied. Approximately 30 years ago, a seminal report has shown that 3,5-T2 increased oxygen consumption more rapidly than T3 in hepatocytes. Other studies demonstrated that exogenous 3,5-T2 administration was able to increase whole body energy expenditure in rodents and humans. In fact, 3,5-T2 treatment prevents diabetic nephropathy, hepatic steatosis induced by high fat diet, insulin resistance, and weight gain during aging in Wistar male rats. The regulation of mitochondria is likely one of the most important actions of T3 and its metabolite 3,5-T2, which was able to restore the thermogenic program of brown adipose tissue (BAT) in hypothyroid rats, just as T3 does, while T1AM administration induced rapid hypothermia. T3 increases heart rate and cardiac contractility, which are hallmark effects of hyperthyroidism involved in cardiac arrhythmia. These deleterious cardiac effects were not observed with the use of 3,5-T2 pharmacological doses, and in contrast T1AM was shown to promote a negative inotropic and chronotropic action at micromolar concentrations in isolated hearts. Furthermore, T1AM has a cardioprotective effect in a model of ischemic/reperfusion injury in isolated hearts, such as occurs with T3 administration. Despite the encouraging possible therapeutic use of TH metabolites, further studies are needed to better understand their peripheral effects, when compared to T3 itself, in order to establish their risk and benefit. On this basis, the main peripheral effects of thyroid hormones and their metabolites in tissues, such as heart, liver, skeletal muscle, and BAT are discussed herein.
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20
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Cioffi F, Gentile A, Silvestri E, Goglia F, Lombardi A. Effect of Iodothyronines on Thermogenesis: Focus on Brown Adipose Tissue. Front Endocrinol (Lausanne) 2018; 9:254. [PMID: 29875734 PMCID: PMC5974034 DOI: 10.3389/fendo.2018.00254] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/03/2018] [Indexed: 02/05/2023] Open
Abstract
Thyroid hormones significantly influence energy expenditure by affecting the activity of metabolic active tissues, among which, mammalian brown adipose tissue (BAT) plays a significant role. For a long time, the modulation of BAT activity by 3,3',5-triiodo-l-thyronine (T3) has been ascribed to its direct actions on this tissue; however, recent evidence indicates that T3, by stimulating specific brain centers, activates the metabolism of BAT via the sympathetic nervous system. These distinct mechanisms of action are not mutually exclusive. New evidence indicates that 3,5-diiodo-l-thyronine (3,5-T2), a thyroid hormone derivative, exerts thermogenic effects, by influencing mitochondrial activity in metabolically active tissues, such as liver, skeletal muscle, and BAT. At the moment, due to the absence of experiments finalized to render a clear cut discrimination between peripheral and central effects induced by 3,5-T2, it is not possible to exclude that some of the metabolic effects exerted by 3,5-T2 may be mediated centrally. Despite this, some evidence suggests that 3,5-T2 plays a role in adrenergic stimulation of thermogenesis in BAT. This mini-review provides an overview of the effects induced by T3 and 3,5-T2 on BAT thermogenesis, with a focus on data suggesting the involvement of central adrenergic stimulation. These aspects may reveal new perspectives in thyroid physiology and in the control of energy metabolism.
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Affiliation(s)
- Federica Cioffi
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | | | - Elena Silvestri
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Fernando Goglia
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
- *Correspondence: Fernando Goglia, ; Assunta Lombardi,
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Naples, Italy
- *Correspondence: Fernando Goglia, ; Assunta Lombardi,
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21
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Senese R, de Lange P, Petito G, Moreno M, Goglia F, Lanni A. 3,5-Diiodothyronine: A Novel Thyroid Hormone Metabolite and Potent Modulator of Energy Metabolism. Front Endocrinol (Lausanne) 2018; 9:427. [PMID: 30090086 PMCID: PMC6068267 DOI: 10.3389/fendo.2018.00427] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 07/09/2018] [Indexed: 12/11/2022] Open
Abstract
Over 30 years of research has demonstrated that 3,5-diiodo-L-thyronine (3,5-T2), an endogenous metabolite of thyroid hormones, exhibits interesting metabolic activities. In rodent models, exogenously administered 3,5-T2 rapidly increases resting metabolic rate and elicits short-term beneficial hypolipidemic effects; however, very few studies have evaluated the effects of endogenous and exogenous T2 in humans. Further analyses on larger cohorts are needed to determine whether 3,5-T2 is a potent additional modulator of energy metabolism. In addition, while several lines of evidence suggest that 3,5-T2 mainly acts through Thyroid hormone receptors (THRs)- independent ways, with mitochondria as a likely cellular target, THRs-mediated actions have also been described. The detailed cellular and molecular mechanisms through which 3,5-T2 elicits a multiplicity of actions remains unknown. Here, we provide an overview of the most recent literature on 3,5-T2 bioactivity with a particular focus on short-term and long-term effects, describing data obtained through in vivo and in vitro approaches in both mammalian and non-mammalian species.
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Affiliation(s)
- Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli” , Caserta, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli” , Caserta, Italy
| | - Giuseppe Petito
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli” , Caserta, Italy
| | - Maria Moreno
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Fernando Goglia
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli” , Caserta, Italy
- *Correspondence: Antonia Lanni
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Tham SW, Li L, Effraim P, Waxman S. Between fire and ice: refractory hypothermia and warmth-induced pain in inherited erythromelalgia. BMJ Case Rep 2017; 2017:bcr-2017-219486. [PMID: 28751508 DOI: 10.1136/bcr-2017-219486] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Inherited erythromelalgia (IEM) is a well-described pain disorder caused by mutations of sodium channel Nav1.7, a peripheral channel expressed within dorsal root ganglion and the sympathetic ganglion neurons. Clinically, IEM is characterised by paroxysmal attacks of severe pain, usually in the distal extremities, triggered by warmth or exercise. Pain is not adequately treated by existing pharmacological agents. Individuals with IEM classically cool their limbs for relief, in some cases resulting in tissue injury. We describe a patient from a family with IEM due to the L858F mutation of Nav1.7 who presented with refractory hypothermia due to overcooling. This presentation of refractory hypothermia necessitating warming strategies, complicated by severe warmth-induced pain, posed a substantial therapeutic challenge. We report our experience in overcoming hypothermia lasting 3 weeks in a child with IEM, discuss possible pathophysiological mechanisms underlying this unusual complication and suggest potential therapeutic interventions.
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Affiliation(s)
- See Wan Tham
- Seattle Children's Research Institute, Seattle, Washington, USA.,Department of Anesthesia and Pain Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Li Li
- Department of Anesthesia and Pain Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Philip Effraim
- Department of Anesthesia, Yale University School of Medicine, New Haven, Connecticut, USA.,Center for Neuroscience and Regeneration Research, Yale University School of Medicine, Veteran Affairs Medical Center, West Haven, Connecticut, USA
| | - Stephen Waxman
- Center for Neuroscience and Regeneration Research, Yale University School of Medicine, Veteran Affairs Medical Center, West Haven, Connecticut, USA.,Department of Neurology, Yale University School of Medicine, West Haven, Connecticut, USA
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23
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Conceição EPS, Moura EG, Oliveira E, Guarda DS, Figueiredo MS, Quitete FT, Calvino C, Miranda RA, Mathias PCF, Manhães AC, Lisboa PC. Dietary calcium supplementation in adult rats reverts brown adipose tissue dysfunction programmed by postnatal early overfeeding. J Nutr Biochem 2017; 39:117-125. [DOI: 10.1016/j.jnutbio.2016.09.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 07/05/2016] [Accepted: 09/02/2016] [Indexed: 11/28/2022]
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24
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Massolt ET, van der Windt M, Korevaar TIM, Kam BLR, Burger JW, Franssen GJH, Lehmphul I, Köhrle J, Visser WE, Peeters RP. Thyroid hormone and its metabolites in relation to quality of life in patients treated for differentiated thyroid cancer. Clin Endocrinol (Oxf) 2016; 85:781-788. [PMID: 27175823 DOI: 10.1111/cen.13101] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/21/2016] [Accepted: 05/11/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Levothyroxine (LT4) is the standard of care in patients with hypothyroidism. Despite this replacement therapy, quality of life (QoL) remains impaired in a substantial amount of patients. The reasons for this are still a matter of debate. Suggested causes include lack of endogenous T3 secretion by the thyroid, changes in other thyroid hormone metabolites and interference by autoimmune processes. OBJECTIVE To investigate the association between thyroid function tests (TFTs) and QoL in patients with a history of differentiated thyroid cancer on LT4 monotherapy. These patients lack endogenous thyroidal T3 secretion in the absence of autoimmune disease. MATERIALS AND METHODS This is a cross-sectional study in 143 patients (69·2% female). Initial therapy consisted of total thyroidectomy followed by radioiodine ablation minimally one year before inclusion. We assessed health-related QoL (RAND-36), thyroid-specific QoL (ThyPRO) and fatigue with the Multidimensional Fatigue Inventory. Extensive TFTs were assessed, including 3,5-diiodo-L-thyronine (3,5-T2). RESULTS Mean age was 50·2 years and mean time since diagnosis was 8·4 years. Median TSH was 0·042 mU/l, total T4 145·0 nmol/l, free T4 25·6 pmol/l, total T3 1·93 nmol/l, reverse T3 0·53 nmol/l and 3,5-T2 0·86 nmol/l. Multiple linear regression analyses did not show any association between QoL and the different TFTs, including T4/T3 and 3,5-T2/T3 ratios reflecting peripheral metabolism. CONCLUSION We did not find any association between TFTs and QoL in athyreotic patients on LT4 monotherapy. Our data do not provide evidence that a slight increase in dose improves fatigue or well-being in hypothyroid patients on LT4 therapy.
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Affiliation(s)
- E T Massolt
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands.
- Rotterdam Thyroid Center, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands.
| | - M van der Windt
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
- Rotterdam Thyroid Center, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - T I M Korevaar
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
- Rotterdam Thyroid Center, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - B L R Kam
- Department of Nuclear Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - J W Burger
- Division of Surgical Oncology, Department of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - G J H Franssen
- Division of Surgical Oncology, Department of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - I Lehmphul
- Institute of Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J Köhrle
- Institute of Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - W E Visser
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
- Rotterdam Thyroid Center, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - R P Peeters
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
- Rotterdam Thyroid Center, Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
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25
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Jaspers RT, Zillikens MC, Friesema ECH, Paoli G, Bloch W, Uitterlinden AG, Goglia F, Lanni A, Lange P. Exercise, fasting, and mimetics: toward beneficial combinations? FASEB J 2016; 31:14-28. [DOI: 10.1096/fj.201600652r] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/22/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Richard T. Jaspers
- Laboratory for MyologyMove Research Institute Amsterdam, Faculty of Behavioral and Movement Sciences, Vrije Universiteit (VU) Amsterdam Amsterdam The Netherlands
| | | | - Edith C. H. Friesema
- Division of PharmacologyVascular and Metabolic Diseases, Department of Internal Medicine, Erasmus Medical Center Rotterdam The Netherlands
| | - Giuseppe Paoli
- Department of EnvironmentalBiological, and Pharmaceutical Sciences and Technologies, Second University of Naples Caserta Italy
| | - Wilhelm Bloch
- Institute of Cardiovascular Research and Sport Medicine, Department of Molecular and Cellular Sport MedicineGerman Sport University Cologne Cologne Germany
| | | | - Fernando Goglia
- Department of Sciences and TechnologiesUniversity of Sannio Benevento Italy
| | - Antonia Lanni
- Department of EnvironmentalBiological, and Pharmaceutical Sciences and Technologies, Second University of Naples Caserta Italy
| | - Pieter Lange
- Department of EnvironmentalBiological, and Pharmaceutical Sciences and Technologies, Second University of Naples Caserta Italy
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26
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Bargut TCL, Aguila MB, Mandarim-de-Lacerda CA. Brown adipose tissue: Updates in cellular and molecular biology. Tissue Cell 2016; 48:452-60. [PMID: 27561621 DOI: 10.1016/j.tice.2016.08.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 08/04/2016] [Accepted: 08/06/2016] [Indexed: 01/12/2023]
Abstract
Brown adipose tissue (BAT) is mainly composed of adipocytes, it is highly vascularized and innervated, and can be activated in adult humans. Brown adipocytes are responsible for performing non-shivering thermogenesis, which is exclusively mediated by uncoupling protein (UCP) -1 (a protein found in the inner mitochondrial membrane), the hallmark of BAT, responsible for the uncoupling of the proton leakage from the ATP production, therefore, generating heat (i.e. thermogenesis). Besides UCP1, other compounds are essential not only to thermogenesis, but also to the proliferation and differentiation of BAT, including peroxisome proliferator-activated receptor (PPAR) family, PPARgamma coactivator 1 (PGC1)-alpha, and PRD1-BF-1-RIZ1 homologous domain protein containing protein (PRDM) -16. The sympathetic nervous system centrally regulates thermogenesis through norepinephrine, which acts on the adrenergic receptors of BAT. This bound leads to the initialization of the many pathways that may activate thermogenesis in acute and/or chronic ways. In summary, this mini-review aims to demonstrate the latest advances in the knowledge of BAT.
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Affiliation(s)
- Thereza Cristina Lonzetti Bargut
- Laboratory of Morphometry, Metabolism and Cardiovascular Diseases, Institute of Biology, State University of Rio de Janeiro, Brazil
| | - Marcia Barbosa Aguila
- Laboratory of Morphometry, Metabolism and Cardiovascular Diseases, Institute of Biology, State University of Rio de Janeiro, Brazil
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27
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Gnocchi D, Steffensen KR, Bruscalupi G, Parini P. Emerging role of thyroid hormone metabolites. Acta Physiol (Oxf) 2016; 217:184-216. [PMID: 26748938 DOI: 10.1111/apha.12648] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 07/28/2015] [Accepted: 01/03/2016] [Indexed: 12/15/2022]
Abstract
Thyroid hormones (THs) are essential for the regulation of development and metabolism in key organs. THs produce biological effects both by directly affecting gene expression through the interaction with nuclear receptors (genomic effects) and by activating protein kinases and/or ion channels (short-term effects). Such activations can be either direct, in the case of ion channels, or mediated by membrane or cytoplasmic receptors. Short-term-activated signalling pathways often play a role in the regulation of genomic effects. Several TH intermediate metabolites, which were previously considered without biological activity, have now been associated with a broad range of actions, mostly attributable to short-term effects. Here, we give an overview of the physiological roles and mechanisms of action of THs, focusing on the emerging position that TH metabolites are acquiring as important regulators of physiology and metabolism.
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Affiliation(s)
- D. Gnocchi
- Division of Clinical Chemistry; Department of Laboratory Medicine; Karolinska Institutet at Karolinska University Hospital Huddinge; Stockholm Sweden
| | - K. R. Steffensen
- Division of Clinical Chemistry; Department of Laboratory Medicine; Karolinska Institutet at Karolinska University Hospital Huddinge; Stockholm Sweden
| | - G. Bruscalupi
- Department of Biology and Biotechnology ‘Charles Darwin’; Sapienza University of Rome; Rome Italy
| | - P. Parini
- Division of Clinical Chemistry; Department of Laboratory Medicine; Karolinska Institutet at Karolinska University Hospital Huddinge; Stockholm Sweden
- Metabolism Unit; Department of Medicine; Karolinska Institutet at Karolinska University Hospital Huddinge; Stockholm Sweden
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28
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Lietzow J, Golchert J, Homuth G, Völker U, Jonas W, Köhrle J. 3,5-T2 alters murine genes relevant for xenobiotic, steroid, and thyroid hormone metabolism. J Mol Endocrinol 2016; 56:311-23. [PMID: 26903510 DOI: 10.1530/jme-15-0159] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 02/22/2016] [Indexed: 12/18/2022]
Abstract
The endogenous thyroid hormone (TH) metabolite 3,5-diiodo-l-thyronine (3,5-T2) acts as a metabolically active substance affecting whole-body energy metabolism and hepatic lipid handling in a desirable manner. Considering possible adverse effects regarding thyromimetic action of 3,5-T2 treatment in rodents, the current literature remains largely controversial. To obtain further insights into molecular mechanisms and to identify novel target genes of 3,5-T2 in liver, we performed a microarray-based liver tissue transcriptome analysis of male lean and diet-induced obese euthyroid mice treated for 4 weeks with a dose of 2.5 µg/g bw 3,5-T2 Our results revealed that 3,5-T2 modulates the expression of genes encoding Phase I and Phase II enzymes as well as Phase III transporters, which play central roles in metabolism and detoxification of xenobiotics. Additionally, 3,5-T2 changes the expression of TH responsive genes, suggesting a thyromimetic action of 3,5-T2 in mouse liver. Interestingly, 3,5-T2 in obese but not in lean mice influences the expression of genes relevant for cholesterol and steroid biosynthesis, suggesting a novel role of 3,5-T2 in steroid metabolism of obese mice. We concluded that treatment with 3,5-T2 in lean and diet-induced obese male mice alters the expression of genes encoding hepatic xenobiotic-metabolizing enzymes that play a substantial role in catabolism and inactivation of xenobiotics and TH and are also involved in hepatic steroid and lipid metabolism. The administration of this high dose of 3,5-T2 might exert adverse hepatic effects. Accordingly, the conceivable use of 3,5-T2 as pharmacological hypolipidemic agent should be considered with caution.
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Affiliation(s)
- Julika Lietzow
- Institut für Experimentelle EndokrinologieCharité - Universitätsmedizin Berlin, Berlin, Germany
| | - Janine Golchert
- Interfaculty Institute for Genetics and Functional GenomicsDepartment of Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional GenomicsDepartment of Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- Interfaculty Institute for Genetics and Functional GenomicsDepartment of Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Wenke Jonas
- Department of Experimental DiabetologyGerman Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany German Center for Diabetes Research (DZD)Helmholtz Center Munich, Neuherberg, Germany
| | - Josef Köhrle
- Institut für Experimentelle EndokrinologieCharité - Universitätsmedizin Berlin, Berlin, Germany
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29
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Abstract
The nongenomic actions of thyroid hormone begin at receptors in the plasma membrane, mitochondria or cytoplasm. These receptors can share structural homologies with nuclear thyroid hormone receptors (TRs) that mediate transcriptional actions of T3, or have no homologies with TR, such as the plasma membrane receptor on integrin αvβ3. Nongenomic actions initiated at the plasma membrane by T4 via integrin αvβ3 can induce gene expression that affects angiogenesis and cell proliferation, therefore, both nongenomic and genomic effects can overlap in the nucleus. In the cytoplasm, a truncated TRα isoform mediates T4-dependent regulation of intracellular microfilament organization, contributing to cell and tissue structure. p30 TRα1 is another shortened TR isoform found at the plasma membrane that binds T3 and mediates nongenomic hormonal effects in bone cells. T3 and 3,5-diiodo-L-thyronine are important to the complex nongenomic regulation of cellular respiration in mitochondria. Thus, nongenomic actions expand the repertoire of cellular events controlled by thyroid hormone and can modulate TR-dependent nuclear events. Here, we review the experimental approaches required to define nongenomic actions of the hormone, enumerate the known nongenomic effects of the hormone and their molecular basis, and discuss the possible physiological or pathophysiological consequences of these actions.
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Affiliation(s)
- Paul J Davis
- Pharmaceutical Research Institute, Albany College of Pharmacy &Health Sciences, One Discovery Drive, Rennselaer, New York 12144, USA
| | - Fernando Goglia
- Dipartimento di Scienze e Tecnologie, Università degli studi del Sannio, Via Port'Arsa 11, 82100, Benevento, Italy
| | - Jack L Leonard
- Department of Microbiology &Physiological Systems, University of Massachusetts Medical School, 368 Plantation Street, Worcester, Massachusetts 01605, USA
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30
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Brown adipose tissue: a potential target in the fight against obesity and the metabolic syndrome. Clin Sci (Lond) 2015; 129:933-49. [DOI: 10.1042/cs20150339] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BAT (brown adipose tissue) is the main site of thermogenesis in mammals. It is essential to ensure thermoregulation in newborns. It is also found in (some) adult humans. Its capacity to oxidize fatty acids and glucose without ATP production contributes to energy expenditure and glucose homoeostasis. Brown fat activation has thus emerged as an attractive therapeutic target for the treatment of obesity and the metabolic syndrome. In the present review, we integrate the recent advances on the metabolic role of BAT and its relation with other tissues as well as its potential contribution to fighting obesity and the metabolic syndrome.
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31
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Lombardi A, Moreno M, de Lange P, Iossa S, Busiello RA, Goglia F. Regulation of skeletal muscle mitochondrial activity by thyroid hormones: focus on the "old" triiodothyronine and the "emerging" 3,5-diiodothyronine. Front Physiol 2015; 6:237. [PMID: 26347660 PMCID: PMC4543916 DOI: 10.3389/fphys.2015.00237] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 08/07/2015] [Indexed: 11/20/2022] Open
Abstract
3,5,3′-Triiodo-L-thyronine (T3) plays a crucial role in regulating metabolic rate and fuel oxidation; however, the mechanisms by which it affects whole-body energy metabolism are still not completely understood. Skeletal muscle (SKM) plays a relevant role in energy metabolism and responds to thyroid state by remodeling the metabolic characteristics and cytoarchitecture of myocytes. These processes are coordinated with changes in mitochondrial content, bioenergetics, substrate oxidation rate, and oxidative phosphorylation efficiency. Recent data indicate that “emerging” iodothyronines have biological activity. Among these, 3,5-diiodo-L-thyronine (T2) affects energy metabolism, SKM substrate utilization, and mitochondrial functionality. The effects it exerts on SKM mitochondria involve more aspects of mitochondrial bioenergetics; among these, respiratory chain activity, mitochondrial thermogenesis, and lipid-handling are stimulated rapidly. This mini review focuses on signaling and biochemical pathways activated by T3 and T2 in SKM that influence the above processes. These novel aspects of thyroid physiology could reveal new perspectives for understanding the involvement of SKM mitochondria in hypo- and hyper-thyroidism.
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Affiliation(s)
- Assunta Lombardi
- Department of Biology, University of Naples Federico II Naples, Italy
| | - Maria Moreno
- Department of Science and Technology, University of Sannio Benevento, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples Caserta, Italy
| | - Susanna Iossa
- Department of Biology, University of Naples Federico II Naples, Italy
| | - Rosa A Busiello
- Department of Science and Technology, University of Sannio Benevento, Italy
| | - Fernando Goglia
- Department of Science and Technology, University of Sannio Benevento, Italy
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32
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Vaitkus JA, Farrar JS, Celi FS. Thyroid Hormone Mediated Modulation of Energy Expenditure. Int J Mol Sci 2015; 16:16158-75. [PMID: 26193258 PMCID: PMC4519944 DOI: 10.3390/ijms160716158] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/07/2015] [Accepted: 07/09/2015] [Indexed: 01/15/2023] Open
Abstract
Thyroid hormone (TH) has diverse effects on mitochondria and energy expenditure (EE), generating great interest and research effort into understanding and harnessing these actions for the amelioration and treatment of metabolic disorders, such as obesity and diabetes. Direct effects on ATP utilization are a result of TH's actions on metabolic cycles and increased cell membrane ion permeability. However, the majority of TH induced EE is thought to be a result of indirect effects, which, in turn, increase capacity for EE. This review discusses the direct actions of TH on EE, and places special emphasis on the indirect actions of TH, which include mitochondrial biogenesis and reduced metabolic efficiency through mitochondrial uncoupling mechanisms. TH analogs and the metabolic actions of T2 are also discussed in the context of targeted modulation of EE. Finally, clinical correlates of TH actions on metabolism are briefly presented.
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Affiliation(s)
- Janina A Vaitkus
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA.
| | - Jared S Farrar
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA.
| | - Francesco S Celi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA.
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33
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Gao C, Li T, Liu J, Guo Q, Tian L. Endothelial Functioning and Hemodynamic Parameters in Rats with Subclinical Hypothyroid and the Effects of Thyroxine Replacement. PLoS One 2015; 10:e0131776. [PMID: 26158620 PMCID: PMC4497722 DOI: 10.1371/journal.pone.0131776] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 06/05/2015] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Subclinical hypothyroidism (SCH) and its associations with atherosclerosis (AS) and cardiovascular disease remain controversial. The purpose of our study was to observe changes in endothelial functioning and hemodynamics in rats with SCH and to determine whether L-thyroxine (L-T4) administration affects these changes. METHODS In total, sixty male Wistar rats were randomly divided into the following three groups with 20 rats each: control euthyroid rats, SCH rats and SCH rats that had been treated with thyroxine (SCH+T4). The SCH rats were induced by administration of 10 mg x kg(-1) x d(-1) methimazole (MMI) once daily by gavage for 3 months. The SCH+T4 rats were administered the same dose of MMI for three months in addition to 2 μg x kg(-1) x d(-1) L-T4 once daily by gavage after 45 days of MMI administration. The control rats received physiological saline via gavage. RESULTS The SCH group had significantly higher thyroid-stimulating hormone (TSH), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and endothelin (ET) levels and a lower nitric oxide (NO) level than the control and SCH+T4 groups. The tail and carotid artery blood pressures, left ventricular systolic pressure, heart rate and aorta ventralis blood flow were significantly lower in the SCH group than in the control and SCH+T4 groups. ACH treatment caused concentration-dependent relaxation, which was reduced in the SCH arteries compared with the control and SCH+T4 arteries. Histopathological examination revealed the absence of pathological changes in the SCH rat arteries. CONCLUSIONS These findings demonstrate that L-T4 treatment ameliorates endothelial dysfunction and hemodynamic changes in SCH rats.
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Affiliation(s)
- Cuixia Gao
- Departments of Ultrasonic Diagnosis, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Tingting Li
- Department of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Jing Liu
- Departments of Endocrinology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Qian Guo
- Departments of Endocrinology, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Limin Tian
- Departments of Endocrinology, Gansu Provincial Hospital, Lanzhou, Gansu, China
- * E-mail:
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