Adipose Tissue: Physiology to Metabolic Dysfunction
Allison J. Richard, Ursula White, Carrie M. Elks, Jacqueline M. Stephens
Abstract
Like the obesity epidemic, our understanding of adipocytes and adipose tissue is expanding. Just in the past decade, substantial advances have led to new insights into the contributions of adipose tissue to normal physiology and obesity-related complications, which places adipocyte biology at the epicenter of a global pandemic of metabolic diseases. In addition to detailing the types, locations, and functions of different adipose tissue depots, this chapter will review the secretory capacities of adipose tissue. Arguably one of the most significant discoveries in the last two decades of adipocyte research is that not only do adipocytes release endocrine hormones, but fat cells and adipose tissue secrete a variety of effectors, including exosomes, miRNA, lipids, inflammatory cytokines, and peptide hormones that act in both paracrine and endocrine capacities to impact local and systemic metabolic responses. The origins of adipocytes via progenitor cells and the process of adipocyte development are discussed. Inflammation, metabolically healthy fat, and adipose tissue expansion are also considered. Finally, several emerging research areas in fat cell biology with therapeutic potential in the management patients who are overweight and have obesity are summarized. For complete coverage of all related areas of Endocrinology, please visit our on-line FREE web-text, WWW.ENDOTEXT.ORG .