Adipocytes Under Environmental Assault: Targets for Obesity?

Behl, Shalini and Singh, Jaipaul orcid iconORCID: 0000-0002-3200-3949 (2020) Adipocytes Under Environmental Assault: Targets for Obesity? In: Pathophysiology of Obesity-Induced Health Complications. Advances in Biochemistry in Health and Disease, 19 . Springer, Switzerland, pp. 23-41. ISBN 978-3-030-35357-5

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Official URL: https://www.springer.com/gb/book/9783030353575?wt_...

Abstract

Abstract In the recent years, there has been a tremendous concern over the possible health threat posed by endocrine-disrupting chemicals (EDCs). These are mostly synthetic chemicals found in various materials such as organo-chlorinated
pesticides, industrial chemicals, plastics and plasticizers, fuels, heavy metals, additives or contaminants in food, and personal care products. These chemicals are present in the environment and are with widespread use. Human exposure to EDCs
occurs via ingestion of food, dust and water, via inhalation of gases and particles in the air, and through the skin. Data from several animal models, human clinical observations, and epidemiological studies converge to implicate their association
with altered reproductive function in males and females, increased incidence of breast cancer, abnormal growth patterns and neuro-developmental delays in children, disruption of adipocyte function, as well as changes in immune function. The
EDCs exert their insulting effects by interfering with hormone biosynthesis, metabolism, or action resulting in a deviation from normal homeostatic control or reproduction. The mechanisms of EDCs involve divergent pathways including (but not limited to) estrogenic, anti-androgenic, thyroid, peroxisome proliferator-activated receptor c, retinoid, and actions through other nuclear
receptors; steroidogenic enzymes; neurotransmitter receptors and systems; and many other pathways that are highly conserved in wildlife and humans. Emerging data from in vitro as well as in vivo models suggest new targets (i.e. adipocyte
differentiation and mechanisms involved in weight homeostasis) of abnormal programming by EDCs, and provide strong evidence to support the scientific term ‘obesogen’. The emerging idea of a link between EDCs and obesity expands the focus on obesity from intervention and treatment to include prevention and avoidance of these chemical modifiers. Because expansion of the adipocyte pool is critical for safely storing excess lipid, an understanding how these signaling axes can be altered by EDCs is critical in appreciating how environmental contaminants might contribute to the development of metabolic diseases.


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