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Recent advances in the epithelial barrier theory
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This review explains the "epithelial barrier theory," which links the rise in allergies, autoimmune diseases, and other chronic conditions to environmental pollutants, including micro- and nanoplastics, that damage the protective lining of our skin, lungs, and gut. These pollutants can break down the tight junctions between cells, trigger inflammation, and allow harmful substances to enter the body, potentially contributing to the increase in chronic diseases seen worldwide.
The epithelial barrier theory links the recent rise in chronic non-communicable diseases, notably autoimmune and allergic disorders, to environmental agents disrupting the epithelial barrier. Global pollution and environmental toxic agent exposure have worsened over six decades because of uncontrolled growth, modernization, and industrialization, affecting human health. Introducing new chemicals without any reasonable control of their health effects through these years has led to documented adverse effects, especially on the skin and mucosal epithelial barriers. These substances, such as particulate matter, detergents, surfactants, food emulsifiers, micro- and nano-plastics, diesel exhaust, cigarette smoke, and ozone, have been shown to compromise the epithelial barrier integrity. This disruption is linked to the opening of the tight-junction barriers, inflammation, cell death, oxidative stress, and metabolic regulation. Consideration must be given to the interplay of toxic substances, underlying inflammatory diseases, and medications, especially in affected tissues. This review article discusses the detrimental effect of environmental barrier-damaging compounds on human health and involves cellular and molecular mechanisms.
More Papers Like This
Epithelial Barrier Theory: The Role of Exposome, Microbiome, and Barrier Function in Allergic Diseases
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This review presents the epithelial barrier theory, which proposes that damage to the body's protective barriers is a key driver of allergic diseases. Researchers identified numerous environmental factors including microplastics, nanoparticles, detergents, and processed food additives that can weaken epithelial barriers in the skin, lungs, and gut. The study suggests that the rising prevalence of allergies may be linked to increasing exposure to barrier-disrupting substances in our modern environment.
Environmental factors in epithelial barrier dysfunction
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This review examines how environmental factors from the modern industrialized world -- including air pollution, detergents, nanoparticles, and microplastics -- damage the protective lining of the skin, gut, and airways. Researchers describe how these exposures degrade the proteins that hold barrier cells together, increasing permeability and triggering immune responses linked to allergies, asthma, and inflammatory conditions. The study presents an "epithelial barrier hypothesis" suggesting that widespread barrier dysfunction from environmental pollutants may be driving the rise of chronic inflammatory diseases.
Epithelial barrier hypothesis: Effect of the external exposome on the microbiome and epithelial barriers in allergic disease
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This review proposes the 'epithelial barrier hypothesis,' which suggests that modern environmental exposures, including microplastics, air pollution, and processed food additives, are damaging the protective barriers of our skin, gut, and airways. When these barriers break down, foreign substances and bacteria can enter the body and trigger allergic and inflammatory diseases, which have been increasing rapidly in recent decades. The research suggests microplastics may be one of many environmental factors driving the rise in conditions like asthma, food allergies, and eczema.
Lifestyle Changes and Industrialization in the Development of Allergic Diseases
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This paper describes the "Epithelial Barrier Theory," which proposes that toxic substances in everyday products -- including microplastics, detergents, and air pollution -- damage the protective linings of our skin, lungs, and gut. This damage disrupts the body's microbiome and triggers inflammation that may help explain the global rise in allergies and other immune-related diseases over recent decades.
Climate change and the epithelial barrier theory in allergic diseases: A One Health approach to a green environment
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This review links climate change and increased environmental pollution to the weakening of epithelial barriers in the skin, gut, and lungs, contributing to the rise of allergic diseases worldwide. The paper specifically identifies microplastics alongside other pollutants as agents that damage epithelial barriers, suggesting a mechanism by which microplastic exposure could contribute to allergies and autoimmune conditions.
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