Abstract
We examine the role of adipose tissue, typically considered an energy storage site, as a potential site of toxicant accumulation. Although the production of most persistent organic pollutants (POPs) was banned years ago, these toxicants persist in the environment due to their resistance to biodegradation and widespread distribution in various environmental forms (e.g., vapor, sediment, and water). As a result, human exposure to these toxicants is inevitable. Largely due to their lipophilicity, POPs bioaccumulate in adipose tissue, resulting in greater body burdens of these environmental toxicants with obesity. POPs of major concern include polychlorinated biphenyls (PCBs), polychlorinated dibenzo‐p‐dioxins and furans (PCDDs/PCDFs), and polybrominated biphenyls and diphenyl ethers (PBBs/PBDEs), among other organic compounds. In this review, we 1) highlight the physical characteristics of toxicants that enable them to partition into and remain stored in adipose tissue, 2) discuss the specific mechanisms of action by which these toxicants act to influence adipocyte function, and 3) review associations between POP exposures and the development of obesity and diabetes. An area of controversy relates to the relative potential beneficial versus hazardous health effects of toxicant sequestration in adipose tissue.
Document Type
Article
Publication Date
10-2017
Digital Object Identifier (DOI)
https://doi.org/10.1002/cphy.c160038
Funding Information
The authors wish to acknowledge support from the National Institute of Environmental Health Sciences (P42 ES007380–21) and the National Institute of Diabetes, Kidney and Digestive Diseases (T32 DK00778) of the National Institutes of Health.
Repository Citation
Jackson, Erin; Shoemaker, Robin C.; Larian, Nika; and Cassis, Lisa A., "Adipose Tissue as a Site of Toxin Accumulation" (2017). Pharmacology and Nutritional Sciences Faculty Publications. 78.
https://uknowledge.uky.edu/pharmacol_facpub/78
Included in
Endocrinology, Diabetes, and Metabolism Commons, Medical Nutrition Commons, Pharmacology, Toxicology and Environmental Health Commons, Physiology Commons
Notes/Citation Information
Published in Comprehensive Physiology, v. 7, issue 4, p. 1085-1135.
Copyright © 2017 American Physiological Society. All rights reserved.
The copyright holder has granted the permission for posting the article here.
The document available for download is the authors' post-peer-review final draft of the article.
A corrigendum to this article can be found at https://doi.org/10.1002/cphy.cv08i03corr.