229 The most often used backbone modification method is PS modification, where the oxygen atom is replaced by sulfur
Their exceptional chemical stability allows environmental persistence exceeding two decades, leading to progressive bioaccumulation through food webs and preferential storage in lipid-rich tissues ( Human exposure to these compounds occurs through multiple pathwaysingestion, inhalation, and dermal absorptionwith subsequent accumulation in adipose tissue, hepatic systems, and critically, reproductive organs ( 1.2 Key research challenges Despite substantial advances in understanding individual EED toxicity profiles, several fundamental knowledge gaps continue to impede comprehensive risk assessment: Complex Mixture Effects Remain Poorly Understood While toxicological studies have extensively characterized individual EED effects, real-world human exposure invariably involves simultaneous contact with multiple compounds
in turn, metabolic intermediates can influence the activity of these pathways (Fig
When oxidative stress (OS) occurs, macromolecular homeostasis can be substantially affected because of lipid peroxidation, protein modifications and DNA oxidation by free radicals [23,24,25]