Skeletal Muscle Thermogenesis and Energy Metabolism

A special issue of Metabolites (ISSN 2218-1989). This special issue belongs to the section "Endocrinology and Clinical Metabolic Research".

Deadline for manuscript submissions: closed (15 January 2022) | Viewed by 11705

Special Issue Editors


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Guest Editor
College of Medicine, University of Central Florida, 6850 Lake Nona Blvd. Orlando, Fl 32827, USA
Interests: ageing; sarcopenia; diabetes; metabolism

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Guest Editor
School of Biotechnology, KIIT University, Bhubaneswar, India
Interests: thermogenesis; avian muscle NST; vertebrate muscles; Ca2+-signaling proteins; evolution of endothermy

Special Issue Information

Dear Colleagues,

Temperature homeostasis (37 ºC) is essential for optimal physiological activity and the survival of endotherms (birds and mammals). Both shivering and nonshivering thermogenic mechanisms (NST) contribute to temperature homeostasis. In mammals, skeletal muscle and brown adipose tissue (BAT) are major sites of thermogenesis and play key roles in temperature homeostasis. Lately, there has been considerable interest in activating BAT-mediated NST in adult humans to increase energy metabolism. However, the relative paucity of BAT in adult humans and its absence in obese individuals makes it relatively inefficient in increasing metabolism and regulating obesity. On the other hand, skeletal muscle-based shivering and NST mechanisms remain active throughout adult life and are the primary means for heat production in most mammals, including humans. Another advantage is that skeletal muscle represents ~40–45% of body mass and recruitment of skeletal muscle activity through shivering, and NST mechanisms (especially activation of futile SERCA activity) can be effective to increase energy expenditure and whole-body metabolism. In addition, a combination of cold and exercise could be more effective in enhancing muscle energy expenditure and whole-body metabolism in humans. The aim and scope of this Special Issue is to identify the different mechanisms of muscle thermogenesis and discuss their relevance to whole-body metabolism in mammals.

Dr. Muthu Periasamy
Dr. Naresh Chandra Bal
Guest Editors

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Published Papers (2 papers)

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Review

11 pages, 1340 KiB  
Review
The Role of Thyroid Hormones on Skeletal Muscle Thermogenesis
by Nadia Sawicka-Gutaj, Abikasinee Erampamoorthy, Ariadna Zybek-Kocik, Angelos Kyriacou, Małgorzata Zgorzalewicz-Stachowiak, Agata Czarnywojtek and Marek Ruchała
Metabolites 2022, 12(4), 336; https://doi.org/10.3390/metabo12040336 - 7 Apr 2022
Cited by 6 | Viewed by 6743
Abstract
Nowadays obesity becomes a significant global problem. Hence, recently more and more attention has been paid to substances present in the body that have a significant impact on metabolic processes and thermogenesis, in the context of their potential use in the prevention and [...] Read more.
Nowadays obesity becomes a significant global problem. Hence, recently more and more attention has been paid to substances present in the body that have a significant impact on metabolic processes and thermogenesis, in the context of their potential use in the prevention and treatment of obesity. It is well known that the relationship between thyroid hormones and obesity is multilayered, however recently, more and more information about the possible relation between thyroid hormones and muscle metabolism has been published. The aim of this review is to present the most updated information on the physiological impact of thyroid hormones on muscle tissue, as well as pathological changes related to the occurrence of various types of thyroid disorders, including hypothyroidism, hyperthyroidism and sick euthyroid syndrome. However, the data in humans still remains insufficient, and further studies are needed to fully explore the thyroid-muscle cross-talk. Full article
(This article belongs to the Special Issue Skeletal Muscle Thermogenesis and Energy Metabolism)
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22 pages, 1372 KiB  
Review
Skeletal Muscle Uncoupling Proteins in Mice Models of Obesity
by Lidija Križančić Bombek and Maša Čater
Metabolites 2022, 12(3), 259; https://doi.org/10.3390/metabo12030259 - 17 Mar 2022
Cited by 1 | Viewed by 4139
Abstract
Obesity and accompanying type 2 diabetes are among major and increasing worldwide problems that occur fundamentally due to excessive energy intake during its expenditure. Endotherms continuously consume a certain amount of energy to maintain core body temperature via thermogenic processes, mainly in brown [...] Read more.
Obesity and accompanying type 2 diabetes are among major and increasing worldwide problems that occur fundamentally due to excessive energy intake during its expenditure. Endotherms continuously consume a certain amount of energy to maintain core body temperature via thermogenic processes, mainly in brown adipose tissue and skeletal muscle. Skeletal muscle glucose utilization and heat production are significant and directly linked to body glucose homeostasis at rest, and especially during physical activity. However, this glucose balance is impaired in diabetic and obese states in humans and mice, and manifests as glucose resistance and altered muscle cell metabolism. Uncoupling proteins have a significant role in converting electrochemical energy into thermal energy without ATP generation. Different homologs of uncoupling proteins were identified, and their roles were linked to antioxidative activity and boosting glucose and lipid metabolism. From this perspective, uncoupling proteins were studied in correlation to the pathogenesis of diabetes and obesity and their possible treatments. Mice were extensively used as model organisms to study the physiology and pathophysiology of energy homeostasis. However, we should be aware of interstrain differences in mice models of obesity regarding thermogenesis and insulin resistance in skeletal muscles. Therefore, in this review, we gathered up-to-date knowledge on skeletal muscle uncoupling proteins and their effect on insulin sensitivity in mouse models of obesity and diabetes. Full article
(This article belongs to the Special Issue Skeletal Muscle Thermogenesis and Energy Metabolism)
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