Download or read book Novel regulatory mechanisms behind thermogenesis of brown and beige adipocytes written by Rubén Cereijo and published by Frontiers Media SA. This book was released on 2023-09-19 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Regulation and Therapeutic Potential of Thermogenic Fat Cells written by Jun Wu and published by Frontiers Media SA. This book was released on 2016-06-09 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Obesity has emerged as a major threat to public health in both the western and developing world. Essentially a disorder of energy balance, obesity occurs when energy intake and storage exceeds expenditure. Much of energy homeostasis depends on the activity and function of adipose tissue. Adipocytes in mammals fall into two categories classified by their primary functions: white fat cells that mediate energy storage and thermogenic fat cells that counteract hypothermia and obesity through adaptive thermogenesis. Whereas white fat and its function as an energy reservoir and endocrine organ have been studied for decades and are relatively well understood, until recently many aspects of the thermogenic fat biology have remained elusive. Accumulating evidence supports the hypothesis that thermogenic fat cells arise from at least two different developmental origins: the ones of a skeletal muscle-like lineage are now called “classical” brown fat cells, and the rest of the thermogenic fat cells are normally referred to as the beige fat cells. The last decade has witnessed an explosion of interest and studies focusing on the regulation of thermogenic fat cells and potential therapeutics targeting these adipocytes. Here we summarize the recent advancements in our understanding of these metabolically active fat cells.
Download or read book Brown Adipose Tissue written by Alexander Pfeifer and published by Springer. This book was released on 2019-04-02 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this book is on brown adipose tissue and its metabolic function. The book provides a timely update on the latest research and shows where the field is heading. Brown adipose tissue (BAT) dissipates energy and has received considerable attention in the last few years, having been re-discovered in adult humans in 2007/9. Moreover, BAT might offer a target for novel therapies to address obesity, a health condition that has reached pandemic dimensions.
Download or read book Novel Systemic Regulation of Brown Adipose Tissue Thermogenesis written by Alexandra Lee Ghaben and published by . This book was released on 2020 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Challenges for Targeting Brown Fat Thermogenesis to Combat Obesity written by Takeshi Yoneshiro and published by Frontiers Media SA. This book was released on 2020-12-28 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book The Adipose Organ written by Saverio Cinti and published by . This book was released on 1999 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Transcriptional Regulators of Non shivering Thermogenesis written by Jon Michael Dempersmier and published by . This book was released on 2015 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike white adipose tissue (WAT), which stores excess energy as triglycerides, brown adipose tissue (BAT) burns fatty acids and glucose to produce heat. The thermogenic ability of BAT is due to the specialized inner mitochondrial proton transporter named uncoupling protein 1 (UCP1), which dissipates the proton motive force generated by the electron transport chain to create heat instead of ATP. Despite data suggesting that increasing BAT activity may be a promising antiobesity therapy, an inclusive model of the transcriptional regulation of thermogenic genes remain unclear. The aim of this dissertation work was to identify and characterize novel regulators of the UCP1 promoter and nonshivering thermogenesis. Chapter 1 reviews BAT in both mice and human, profiling the basic mechanism of uncoupled respiration and cold-induced nonshivering thermogenesis. Unlike classical BAT, which has constitutive UCP1 expression, brown adipocyte-like cells arise in WAT depots following prolonged cold exposure and contribute to whole body thermogenic capacity. While having similar functions, these cells arise from different precursor populations, having unique gene signatures and potentially depot specific regulation. Human BAT resembles either classical BAT or brown adipocyte-like cells in a depot specific manner, with differing levels of basal UCP1 expression and expression profiles. Finally, known transcriptional and hormonal regulators of BAT are discussed. Chapter 2 profiles my screening efforts to identify novel transcriptional regulators of the UCP1. Briefly, a library of over 1100 transcription factors was screened for activation of the UCP1 promoter. Expression profiling of the positive factors identified 6 novel, brown fat enriched transcriptional activators of UCP1. The first such transcription factor identified was the previously uncharacterized C2H2 type zinc-finger protein, Zfp516. Zfp516 is induced by cold where it binds and activates a brown fat gene program. Zfp516 ablation is embryonic lethal, but Zfp516 knockout embryos have little to no UCP1 expression and aberrant morphology. On the other hand, adipose specific transgenic overexpression in aP2-Zfp516 resulted in marked browning of inguinal WAT, increased body temperature and whole body energy expenditure, and prevention of diet-induced obesity. Chapter 3 profiles a second transcription factor identified in my screening efforts, the CCCH-type zinc finger protein, Zc3h10. Zc3h10, together with multiple cofactors, binds and activates the distal UCP1 promoter. Ablation of Zc3h10 results in defective BAT differentiation in cells, while adipose specific transgenic overexpression in aP2-Zc3h10 mice results in a lean phenotype. Finally, chapter 4 concludes this work, discussing my findings in the context of the field of brown adipocyte biology and presents future directions and remaining questions. This study has identified novel transcriptional regulators of UCP1, contributing significantly to the understanding of brown adipocyte biology and nonshivering thermogenesis, and providing new targets for future antiobesity therapeutics.
Download or read book Tissue Specific Cell Signaling written by Joana Vieira Silva and published by Springer Nature. This book was released on 2020-05-29 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signal transduction comprises the intracellular biochemical signals which induce the appropriate cell response to an external stimulus. The players in signal transduction are diverse, from small molecules as first messengers, to proteins, receptors, transcription factors, among many others. The different signaling pathways and the crosstalk between them originates the unique signaling profile of every cell type in the human body. The cell signaling specificity depends on several aspects including protein composition, subcellular localization and complexes and gene promoters. This textbook provides a comprehensive overview of the specific signaling pathways on a variety of human tissues. This information can be of great value for health science researchers, professionals and students to understand key pathways for tissue-specific functions in the plethora of signals, signals receptors, transducers and effectors. Chapter 3 and 15 are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Download or read book Mammalian Thermogenesis written by Lucien Girardier and published by Springer. This book was released on 1983-08-18 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mammalian thermogenesis: an introduction; Brown fat: an energy dissipating tissue; Autonomic regulation of thermogenesis; Thyroid hormones and thermogenesis; Enegetics of maintenance and growth; Diet-induced thermogenesis; Thermogenesis and fever; Pharmacology of thermogenesis.
Download or read book Novel Regulatory Mechanisms of Adipogenesis written by Daniel Steven Halperin and published by . This book was released on 2013 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of fat tissue or adipose over the last half century has dramatically altered the perception of the fat cell, also known as the adipocyte. Once only thought to store fat, the adipocyte is currently recognized to be a highly critical and important metabolically active cell. Adipogenesis, the process of adipocyte formation, has now become an intense subject of basic scientific research in large part due to the up-surge in obesity and metabolic disease in modern day society. PPARgamma is the master regulator of adipogenesis and is also a validated target of anti-diabetic drug therapy. However, a renewed sense of urgency in discovering novel factors and mechanisms that regulate the expression and/or activity of PPARgamma now exists due to recent scrutiny in the clinical use of molecules that directly activate PPARgamma. Therefore, this thesis attempts to address this need by investigating and uncovering entirely new modes of regulation in the differentiating adipocyte. Part one of this thesis presents the construction of a transgenic mouse line that carries a reporter vector containing a cloned set of highly conserved non-coding genomic sequences endogenously found within and adjacent to the PPARgamma locus in the mouse genome. This examination represents an effort to identify a genomic regulatory sequence that confers tissue selective expression of adipose-specific genes such as PPARgamma. Identification of such an enhancer would undoubtedly shed new light on the regulation of gene expression in adipocytes and usher in a new paradigm in the study of adipose tissue. Part two of this thesis presents the identification of Vestigial-like 3 (Vgll3) as an inhibitor of adipocyte differentiation. Vgll3 is a conserved transcriptional co-activator that is down-regulated during adipogenesis. This gene was initially observed to be differentially regulated between pre-adipocyte cell lines that exhibit contradictory potential to become lipid-laden adipocytes. When overexpressed in differentiating adipocytes in vitro, Vgll3 induces a potent block in PPARgamma expression and adipocyte formation. Furthermore, ectopic expression of Vgll3 was observed to up-regulate the expression of genes previously determined to be inhibitors of adipogenesis and genes associated with other mesenchymal-derived cellular differentiation programs. These results point to Vgll3 as a gene whose expression must be carefully modulated during the formation of fully differentiated, mature adipose tissue.
Download or read book Hormones Metabolism and the Benefits of Exercise written by Bruce Spiegelman and published by Springer. This book was released on 2018-03-07 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is faced with an epidemic of metabolic diseases such as obesity and type 2 diabetes. This is due to changes in dietary habits and the decrease in physical activity. Exercise is usually part of the prescription, the first line of defense, to prevent or treat metabolic disorders. However, we are still learning how and why exercise provides metabolic benefits in human health. This open access volume focuses on the cellular and molecular pathways that link exercise, muscle biology, hormones and metabolism. This will include novel “myokines” that might act as new therapeutic agents in the future.
Download or read book Serotonin Neurons Maintain Central Mechanisms Regulating Metabolic Homeostasis and are Vital to Thermogenic Activation written by Jacob McGlashon and published by . This book was released on 2016 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermogenic brown and beige adipocytes convert chemical energy to heat by metabolizing glucose and lipids via uncoupling protein 1 (Ucp1), a process known as non-shivering thermogenesis. Serotonin (5-HT) neurons in the ventral medulla are known to regulate sympathetic efferent neurons in the intermediolateral nucleus (IML) necessary to maintain brown adipose tissue (BAT) activity. Previous studies show that mice lacking central 5-HT neurons are incapable of maintaining body temperature in cold, ambient conditions. Due to this direct linkage between 5-HT and thermoregulation, we hypothesized that central 5-HT neurons may be vital to the regulation of brown and beige adipocyte activity. Given that BAT consumes large amounts of substrate when active, we also hypothesized that inactivation of BAT due to deletion of the regulatory neural circuitry (5-HT neurons) would cause metabolic dysregulation. To test this, we generated mice in which the human diphtheria toxin (DT) receptor was selectively expressed in central 5-HT neurons under control of a Pet-1 promoter. Pet-1 is a transcription factor selectively located in mature, central 5-HT neurons. Coincidentally, some cells within pancreatic islets also express Pet-1, and contain adequate machinery to produce, release, and uptake 5-HT. Systemic treatment with DT eliminated 5-HT neurons and caused loss of thermoregulation, BAT steatosis, and a >50% decrease in Ucp1 expression in BAT and beige fat, indicative of reduced thermal production. In parallel, blood glucose increased 3.5-fold, free fatty acids 13.4-fold and triglycerides 6.5-fold. Intracerebroventricular (ICV) treatment with 1/30th the systemic dose of DT induced an even greater thermoregulatory impairment. The metabolic deficits following systemic DT treatment indicate that central 5-HT neurons are essential for proper metabolic regulation.
Download or read book Nutrigenomics written by Carsten Carlberg and published by Springer. This book was released on 2016-06-11 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fascinating area of Nutrigenomics describes this daily communication between diet, food and nutrients, their metabolites and our genome. This book describes how nutrition shapes human evolution and demonstrates its consequences for our susceptibility to diseases, such as diabetes and atherosclerosis. Inappropriate diet can yield stress for our cells, tissues and organs and then it is often associated with low-grade chronic inflammation. Overnutrition paired with physical inactivity leads to overweight and obesity and results in increased burden for a body that originally was adapted for a life in the savannas of East Africa. Therefore, this textbook does not discuss a theoretical topic in science, but it talks about real life, and our life-long “chat” with diet. We are all food consumers, thus each of us is concerned by the topic of this book and should be aware of its mechanisms. The purpose of this book is to provide an overview on the principles of nutrigenomics and their relation to health or disease. We are not aiming to compete with more comprehensive textbooks on molecular nutrition, evolutionary biology, genomics, gene regulation or metabolic diseases, but rather will focus on the essentials and will combine, in a compact form, elements from different disciplines. In order to facilitate the latter, we favor a high figure-to-text ratio following the rule “a picture tells more than thousand words”. The content of this book is based on the lecture course “Nutrigenomics”, which is held since 2003 once per year by Prof. Carlberg at the University of Eastern Finland in Kuopio. The book is subdivided into three sections and twelve chapters. Following the "Introduction" there are sections on the "Molecular genetic basis" and the "Links to disease", which take a view on nutrigenomics from the perspective of molecular mechanisms or from the causes of metabolic diseases, respectively. Besides its value as a textbook, Nutrigenomics will be a usefull reference for individuals working in biomedicine.
Download or read book Novel Food Ingredients for Weight Control written by C J K Henry and published by Elsevier. This book was released on 2007-04-30 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Obesity has become an epidemic of global proportions and is predicted to become the leading cause of death in many countries in the near future. As a result, weight control has become increasingly important for many consumers. Edited by a leading academic in the field, this important collection reviews research into the production and use of specific ingredients which can help to control body weight. Part one discusses ingredients implicated in the development of obesity such as sugars and lipids and the body’s response to hunger and satiety. The second part of the book reviews particular ingredients derived from grains, fruit and vegetables, which can assist weight control. Chapters cover ?-glucans, oligosaccharides, starch and carbohydrates. Part three details dairy-based ingredients which can help regulate weight. It covers the use of food constituents such as calcium, conjugated linoleic acid (CLA), polyunsaturated fatty acids (PUFAs) and trans-free oils and fats. Written by an international team of contributors, this book provides food industry professionals and nutritionists with a valuable reference on ingredients for effective weight control. Reviews research into the production and use of specific ingredients which can help to control body weight Provides food industry professionals with essential information about particular ingredients that are effective in weight management Valuable reference for nutritionists and food industry professionals
Download or read book Anti obesity Targeting Brown and Beige Adipocytes written by Jiqiu Wang and published by Frontiers Media SA. This book was released on 2022-02-04 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adipose Tissue in Health and Disease written by Todd Leff and published by John Wiley & Sons. This book was released on 2010-03-19 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely and most comprehensive reference available on the topic covers all the different aspects vital in the fight against the global obesity epidemic. Following a look at adipose tissue development and morphology, the authors go on to examine its metabolic and endocrine functions and its role in disease. The final section deals with comparative and evolutionary aspects of the tissue. The result is an essential resource for cell and molecular biologists, physiologists, biochemists, pharmacologists, and those working in the pharmaceutical industry.
Download or read book Nutrigenomics How Science Works written by Carsten Carlberg and published by Springer Nature. This book was released on 2020-02-14 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fascinating area of Nutrigenomics describes this daily communication between our diet and our genome. This book describes how nutrition shapes human evolution and demonstrates its consequences for our susceptibility to diseases, such as diabetes and atherosclerosis. Inappropriate diet can yield stress for our cells, tissues and organs and then it is often associated with low-grade chronic inflammation. Overnutrition paired with physical inactivity leads to overweight and obesity and results in increased burden for a body that originally was adapted for a life in the savannahs of East Africa. Therefore, this textbook does not discuss a theoretical topic in science, but it talks about real life and our life-long “chat” with diet. We are all food consumers, thus each of us is concerned by the topic of this book and should be aware of its mechanisms. The purpose of this book is to provide an overview on the principles of nutrigenomics and their relation to health or disease. The content of this book is based on the lecture course “Nutrigenomics”, which is held since 2003 once per year by Prof. Carlberg at the University of Eastern Finland in Kuopio. The book represents an updated but simplified version of our textbook “Nutrigenomics” (ISBN 978-3-319-30413-7). Besides its value as a textbook, “Nutrigenomics: how science works” will be a useful reference for individuals working in biomedicine
