1.
[Potential sources of phthalates and bisphenol A and their significance in the development of metabolic diseases].
Mráz, M, Svačina, Š, Kotrlíková, E, Piecha, R, Vrbík, K, Pavloušková, J, Lacinová, Z, Vavrouš, A, Müllerová, D, Matějková, D, et al
Casopis lekaru ceskych. 2016;(3):11-5
Abstract
Nowadays, there is increasing evidence showing that the development of the metabolic syndrome combining obesity, type 2 diabetes mellitus, arterial hypertension and dyslipidemia involves except of traditional risk factors (overnutrition, lack of physical activity, genetic predisposition) also the effect of environmental organic substances called organic pollutants or endocrine disruptors. These chemicals can be found in plastic covers, paints, flame retardants, exhaust gases, fertilizers as well as diverse daily utensils. Phthalates, used primarily as plasticizers, and bisphenol A, are among the most wide-spread members of this group.The aim of this article is to provide a basic overview of the relationship between phthalates and bisphenol A and the etiopathogenesis of the metabolic syndrome and to highlight their potential sources. According to the analysis of materials used for parenteral nutrition and urinary excretion of phthalate metabolites and bisphenol A in subjects on long-term parenteral nutrition we suppose that currently used medical materials are safe with respect to the exposure to both phthalates and bisphenol A and that home environment, especially cosmetic products, might constitute a more probable source of these substances.
2.
Bisphenol A: Targeting metabolic tissues.
Chevalier, N, Fénichel, P
Reviews in endocrine & metabolic disorders. 2015;(4):299-309
Abstract
The prevalence of obesity, metabolic syndrome and type 2 diabetes has dramatically increased worldwide over the last few decades. Although genetic predisposition and lifestyle factors like decreased physical activity and energy-dense diet are well-known factors in the pathophysiology of these conditions, accumulating evidence suggests that the increase in endocrine disrupting chemicals (EDCs) in the environment also explains a substantial part of the incidence of these metabolic diseases. Bisphenol A (BPA) is one of the highest-volume chemicals produced worldwide. Most people are exposed to it daily by consuming food and beverages into which BPA has leached from polycarbonate containers, including reusable bottles and baby bottles. Although initially considered to be a weak environmental estrogen, BPA may be similar in potency to 17β-estradiol in stimulating cellular responses, especially at low but environmentally relevant doses (nM), as more recent studies have demonstrated. In this review, we summarize both epidemiological evidence and in vivo experimental data that point to an association between BPA exposure and the induction of insulin resistance and/or disruption of pancreatic beta cell function and/or obesity. We then discuss the in vitro data and explain the potential mechanisms involved in the metabolic disorders observed after BPA exposure.