scholarly journals Adipose tissue in control of metabolism

2016 ◽  
Vol 231 (3) ◽  
pp. R77-R99 ◽  
Author(s):  
Liping Luo ◽  
Meilian Liu
Keyword(s):  
Adipose Tissue ◽  
Metabolic Pathways ◽  
The Body ◽  
The Other ◽  
Whole Body ◽  
Endocrine Organ ◽  
Lipid Mobilization ◽  
Adipose Tissue Dysfunction ◽  
Body Energy ◽  
Beige Adipose Tissue

Adipose tissue plays a central role in regulating whole-body energy and glucose homeostasis through its subtle functions at both organ and systemic levels. On one hand, adipose tissue stores energy in the form of lipid and controls the lipid mobilization and distribution in the body. On the other hand, adipose tissue acts as an endocrine organ and produces numerous bioactive factors such as adipokines that communicate with other organs and modulate a range of metabolic pathways. Moreover, brown and beige adipose tissue burn lipid by dissipating energy in the form of heat to maintain euthermia, and have been considered as a new way to counteract obesity. Therefore, adipose tissue dysfunction plays a prominent role in the development of obesity and its related disorders such as insulin resistance, cardiovascular disease, diabetes, depression and cancer. In this review, we will summarize the recent findings of adipose tissue in the control of metabolism, focusing on its endocrine and thermogenic function.

scholarly journals Hormonal signaling factors produced by brown adipose tissue as regulators of metabolism of carbohydrates and lipids

Bionatura ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 879-882
Author(s):  
Francisco Santacruz-Hidalgo ◽  
Eliana Viscarra-Sanchez
Keyword(s):  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Cell Communication ◽  
The Body ◽  
Communication Process ◽  
Endocrine Regulation ◽  
Endocrine Organ ◽  
Brown Adipose ◽  
Relevant Field ◽  
Beige Adipose Tissue

Brown adipose tissue is one of the principal generators of heat in the body; due to the activation of many hormones and receptors, it takes a fundamental role in thermogenesis. However recent studies have proved that this is not its only function. Brown adipose tissue could also act as an endocrine organ, which means that it releases chemical substances to the blood and regulate some activities in the organism. This cell communication process is momentous, since allowing cells to exchange physicochemical information with the environment and other cells in the body could be a relevant field of study in treatments of obesity, diabetes and other diseases related with body weight. This paper offers an overview of different transcriptional factors, endocrine regulation and therapeutic applications of the brown fat tissue, and also the distinctions that it has with white adipose tissue and beige adipose tissue.

Abstract 327: Cardiac Regulation of Metabolic Homeostasis by Med13

2013 ◽  
Vol 113 (suppl_1) ◽  
Author(s):  
Chad E Grueter ◽  
Kedryn K Baskin ◽  
Christine M Kusminski ◽  
William Holland ◽  
Philipp E Scherer ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Transcriptional Activation ◽  
Energy Homeostasis ◽  
The Body ◽  
Whole Body ◽  
Mediator Complex ◽  
Acid Oxidation ◽  
Dependent Manner ◽  
Metabolite Production ◽  
Body Energy

Alterations in metabolism are a major component of cardiovascular disease associated with obesity and type 2 diabetes. The complex interplay between these three diseases poses a challenge for successful treatment and warrants further studies directed at understanding the intertissue communication between major metabolic organs. We previously identified a signaling pathway within the heart that modulates systemic energy homeostasis by regulation of Med13, a component of the kinase submodule of the Mediator Complex, in the heart. The Mediator Complex is a large, multiprotein complex that functions to integrate signal specific events with transcriptional activation and elongation in a context dependent manner. Our current work further delineates a mechanism by which Med13 in the heart functions to regulate whole body energy homeostasis. The increase in energy expenditure in Med13 transgenic (TG) mice is due in part to increased triglyceride uptake and beta-oxidation in white adipose tissue and liver. Additionally, the expression of Krebs Cycle and fatty acid oxidation genes are increased in adipose tissue and liver as measured by RNA seq and in metabolite production in Med13 Tg mice. Together, these results demonstrate the Mediator Complex regulates cardiac gene expression and metabolite production which communicates with energy depots within the body to modulate whole body energy homeostasis.

scholarly journals The Endocrine Role of Adipose Tissue and Its Management of Obesity-Related Diseases.

2020 ◽  
pp. 1-2
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Esters ◽  
Whole Body ◽  
Low Grade ◽  
Endocrine Organ ◽  
Hydroxyl Fatty Acids ◽  
Body Energy ◽  
Low Grade Inflammation ◽  
Acid Esters

Adipose tissue plays a central role in regulating whole-body energy. Moreover, adipose tissue acts as an endocrine organ and produces numerous bioactive factors called adipokines which communicate with other organs and modulate a range of metabolic pathways: proteins (adiponectin, angiopoietins, chemerin, etc.), lipids (fatty acid esters of hydroxyl fatty acids, lysophosphatidic acids and sphingolipids), metabolites (uric acid and uridine) and microRNAs. However, excessive adipose tissue is associated with a chronic state of low-grade inflammation, caused by unbalanced production or secretion of these adipokines and can contribute to the development of obesity [1].

scholarly journals microRNAs in Human Adipose Tissue Physiology and Dysfunction

Cells ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3342
Author(s):  
Alina Kurylowicz
Keyword(s):  
Adipose Tissue ◽  
Adipocyte Differentiation ◽  
Therapeutic Potential ◽  
Control Cell ◽  
Human Adipose Tissue ◽  
Whole Body ◽  
Metabolic Complications ◽  
Adipose Tissue Dysfunction ◽  
Body Energy

In recent years, there has been a large amount of evidence on the role of microRNA (miRNA) in regulating adipose tissue physiology. Indeed, miRNAs control critical steps in adipocyte differentiation, proliferation and browning, as well as lipolysis, lipogenesis and adipokine secretion. Overnutrition leads to a significant change in the adipocyte miRNOME, resulting in adipose tissue dysfunction. Moreover, via secreted mediators, dysfunctional adipocytes may impair the function of other organs and tissues. However, given their potential to control cell and whole-body energy expenditure, miRNAs also represent critical therapeutic targets for treating obesity and related metabolic complications. This review attempts to integrate present concepts on the role miRNAs play in adipose tissue physiology and obesity-related dysfunction and data from pre-clinical and clinical studies on the diagnostic or therapeutic potential of miRNA in obesity and its related complications.

scholarly journals The New Role of AMP-Activated Protein Kinase in Regulating Fat Metabolism and Energy Expenditure in Adipose Tissue

Biomolecules ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1757
Author(s):  
Qun Wang ◽  
Jiayi Sun ◽  
Mengyu Liu ◽  
Yaqi Zhou ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Protein Kinase ◽  
Energy Expenditure ◽  
Fat Metabolism ◽  
The Body ◽  
Major Health Problem ◽  
Amp Activated Protein Kinase ◽  
Body Energy ◽  
Beige Adipose Tissue

Obesity is characterized by excessive accumulation of fat in the body, which is triggered by a body energy intake larger than body energy consumption. Due to complications such as cardiovascular diseases, type 2 diabetes (T2DM), obstructive pneumonia and arthritis, as well as high mortality, morbidity and economic cost, obesity has become a major health problem. The global prevalence of obesity, and its comorbidities is escalating at alarming rates, demanding the development of additional classes of therapeutics to reduce the burden of disease further. As a central energy sensor, the AMP-activated protein kinase (AMPK) has recently been elucidated to play a paramount role in fat synthesis and catabolism, especially in regulating the energy expenditure of brown/beige adipose tissue and the browning of white adipose tissue (WAT). This review discussed the role of AMPK in fat metabolism in adipose tissue, emphasizing its role in the energy expenditure of brown/beige adipose tissue and browning of WAT. A deeper understanding of the role of AMPK in regulating fat metabolism and energy expenditure can provide new insights into obesity research and treatment.

scholarly journals Review: Vaspin (SERPINA12) Expression and Function in Endocrine Cells

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1710
Author(s):  
Patrycja Kurowska ◽  
Ewa Mlyczyńska ◽  
Monika Dawid ◽  
Małgorzata Jurek ◽  
Dominika Klimczyk ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Endocrine Cells ◽  
The Body ◽  
Whole Body ◽  
Endocrine Organ ◽  
Hormonal Imbalance ◽  
And Function ◽  
Visceral Adipose ◽  
Multiple Molecules ◽  
Endocrine Tissues

Proper functioning of the body depends on hormonal homeostasis. White adipose tissue is now known as an endocrine organ due to the secretion of multiple molecules called adipokines. These proteins exert direct effects on whole body functions, including lipid metabolism, angiogenesis, inflammation, and reproduction, whereas changes in their level are linked with pathological events, such as infertility, diabetes, and increased food intake. Vaspin-visceral adipose tissue-derived serine protease inhibitor, or SERPINA12 according to serpin nomenclature, is an adipokine discovered in 2005 that is connected to the development of insulin resistance, obesity, and inflammation. A significantly higher amount of vaspin was observed in obese patients. The objective of this review was to summarize the latest findings about vaspin expression and action in endocrine tissues, such as the hypothalamus, pituitary gland, adipose tissue, thyroid, ovary, placenta, and testis, as well as discuss the link between vaspin and pathologies connected with hormonal imbalance.

scholarly journals The Role of AMPK Signaling in Brown Adipose Tissue Activation

Cells ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1122
Author(s):  
Jamie I. van der van der Vaart ◽  
Mariëtte R. Boon ◽  
Riekelt H. Houtkooper
Keyword(s):  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Whole Body ◽  
Ampk Signaling ◽  
Mitochondrial Homeostasis ◽  
Brown Adipose ◽  
Metabolic Stresses ◽  
Amp Activated Protein Kinase ◽  
Body Energy

Obesity is becoming a pandemic, and its prevalence is still increasing. Considering that obesity increases the risk of developing cardiometabolic diseases, research efforts are focusing on new ways to combat obesity. Brown adipose tissue (BAT) has emerged as a possible target to achieve this for its functional role in energy expenditure by means of increasing thermogenesis. An important metabolic sensor and regulator of whole-body energy balance is AMP-activated protein kinase (AMPK), and its role in energy metabolism is evident. This review highlights the mechanisms of BAT activation and investigates how AMPK can be used as a target for BAT activation. We review compounds and other factors that are able to activate AMPK and further discuss the therapeutic use of AMPK in BAT activation. Extensive research shows that AMPK can be activated by a number of different kinases, such as LKB1, CaMKK, but also small molecules, hormones, and metabolic stresses. AMPK is able to activate BAT by inducing adipogenesis, maintaining mitochondrial homeostasis and inducing browning in white adipose tissue. We conclude that, despite encouraging results, many uncertainties should be clarified before AMPK can be posed as a target for anti-obesity treatment via BAT activation.

scholarly journals Adipose tissue NAD+ biosynthesis is required for regulating adaptive thermogenesis and whole-body energy homeostasis in mice

2019 ◽  
Vol 116 (47) ◽  
pp. 23822-23828 ◽  
Author(s):  
Shintaro Yamaguchi ◽  
Michael P. Franczyk ◽  
Maria Chondronikola ◽  
Nathan Qi ◽  
Subhadra C. Gunawardana ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Energy Metabolism ◽  
Cold Exposure ◽  
Energy Homeostasis ◽  
Lipolytic Activity ◽  
Whole Body ◽  
Brown Adipocyte ◽  
Nicotinamide Phosphoribosyltransferase ◽  
Adaptive Thermogenesis ◽  
Body Energy

Nicotinamide adenine dinucleotide (NAD+) is a critical coenzyme for cellular energy metabolism. The aim of the present study was to determine the importance of brown and white adipose tissue (BAT and WAT) NAD+ metabolism in regulating whole-body thermogenesis and energy metabolism. Accordingly, we generated and analyzed adipocyte-specific nicotinamide phosphoribosyltransferase (Nampt) knockout (ANKO) and brown adipocyte-specific Nampt knockout (BANKO) mice because NAMPT is the rate-limiting NAD+ biosynthetic enzyme. We found ANKO mice, which lack NAMPT in both BAT and WAT, had impaired gene programs involved in thermogenesis and mitochondrial function in BAT and a blunted thermogenic (rectal temperature, BAT temperature, and whole-body oxygen consumption) response to acute cold exposure, prolonged fasting, and administration of β-adrenergic agonists (norepinephrine and CL-316243). In addition, the absence of NAMPT in WAT markedly reduced adrenergic-mediated lipolytic activity, likely through inactivation of the NAD+–SIRT1–caveolin-1 axis, which limits an important fuel source fatty acid for BAT thermogenesis. These metabolic abnormalities were rescued by treatment with nicotinamide mononucleotide (NMN), which bypasses the block in NAD+ synthesis induced by NAMPT deficiency. Although BANKO mice, which lack NAMPT in BAT only, had BAT cellular alterations similar to the ANKO mice, BANKO mice had normal thermogenic and lipolytic responses. We also found NAMPT expression in supraclavicular adipose tissue (where human BAT is localized) obtained from human subjects increased during cold exposure, suggesting our finding in rodents could apply to people. These results demonstrate that adipose NAMPT-mediated NAD+ biosynthesis is essential for regulating adaptive thermogenesis, lipolysis, and whole-body energy metabolism.

scholarly journals A combination of exercise and capsinoid supplementation additively suppresses diet-induced obesity by increasing energy expenditure in mice

2015 ◽  
Vol 308 (4) ◽  
pp. E315-E323 ◽  
Author(s):  
Kana Ohyama ◽  
Yoshihito Nogusa ◽  
Katsuya Suzuki ◽  
Kosaku Shinoda ◽  
Shingo Kajimura ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Body Weight ◽  
Adipose Tissue ◽  
Weight Gain ◽  
Energy Expenditure ◽  
Body Weight Gain ◽  
Whole Body ◽  
Voluntary Running ◽  
Running Wheel Exercise ◽  
Body Energy

Exercise effectively prevents the development of obesity and obesity-related diseases such as type 2 diabetes. Capsinoids (CSNs) are capsaicin analogs found in a nonpungent pepper that increase whole body energy expenditure. Although both exercise and CSNs have antiobesity functions, the effectiveness of exercise with CSN supplementation has not yet been investigated. Here, we examined whether the beneficial effects of exercise could be further enhanced by CSN supplementation in mice. Mice were randomly assigned to four groups: 1) high-fat diet (HFD, Control), 2) HFD containing 0.3% CSNs, 3) HFD with voluntary running wheel exercise (Exercise), and 4) HFD containing 0.3% CSNs with voluntary running wheel exercise (Exercise + CSN). After 8 wk of ingestion, blood and tissues were collected and analyzed. Although CSNs significantly suppressed body weight gain under the HFD, CSN supplementation with exercise additively decreased body weight gain and fat accumulation and increased whole body energy expenditure compared with exercise alone. Exercise together with CSN supplementation robustly improved metabolic profiles, including the plasma cholesterol level. Furthermore, this combination significantly prevented diet-induced liver steatosis and decreased the size of adipocyte cells in white adipose tissue. Exercise and CSNs significantly increased cAMP levels and PKA activity in brown adipose tissue (BAT), indicating an increase of lipolysis. Moreover, they significantly activated both the oxidative phosphorylation gene program and fatty acid oxidation in skeletal muscle. These results indicate that CSNs efficiently promote the antiobesity effect of exercise, in part by increasing energy expenditure via the activation of fat oxidation in skeletal muscle and lipolysis in BAT.

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