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Effects of microplastics on allergic airways and potential pathogenesis: a review
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This review examines how microplastics, which can enter the body through breathing, eating, and skin contact, may affect allergic airway conditions. Researchers found evidence that microplastics can damage airway lining cells, disrupt the protective barrier of the respiratory tract, and trigger heightened airway reactivity. The study suggests that chronic microplastic exposure may worsen allergic airway inflammation, though more research is needed to fully understand the mechanisms involved.
Plastic is widely used in production and daily life. At every stage of its circulation, plastic continuously decomposes into microplastic, and microplastic pollution has increasingly become a global concern for the environment. There is considerable evidence that microplastics are ubiquitous in the environment and can enter the human body through a variety of pathways, posing a threat to human health. These substances can be detected in the respiratory tract and lungs, and prolonged exposure to microplastics can adversely affect the respiratory tract and lead to disease. Furthermore, research has indicated that microplastics are toxic, affecting airway epithelial cell metabolism, disrupting epithelial barrier integrity, and making the airway highly reactive. However, the effect of microplastics on the allergic airway has received little attention. In this paper, we review the toxicity of microplastics and analyze their effects on the allergic airway, exploring the potential mechanisms of action of microplastics in allergic airway inflammation.
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Progress in understanding the impact of microplastics on respiratory allergic diseases
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This review synthesized evidence on how airborne microplastics may affect respiratory allergic diseases such as allergic rhinitis and asthma. Researchers found that inhaled microplastics can compromise airway barriers by disrupting tight junctions, impairing mucus clearance, and weakening mucosal defenses. The study suggests that microplastic characteristics like polymer type, particle size, and surface chemistry influence how they initiate or worsen respiratory allergic responses.
Airway exposure to microplastics: Potential mechanisms from epithelial barrier damage to the development of allergic rhinitis
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This review summarized the mechanisms by which airborne microplastic exposure triggers allergic rhinitis, identifying pathways including physical and chemical disruption of the airway epithelial barrier, oxidative stress from adsorbed pollutants, and induction of Th2 immune responses and IgE class-switching. The findings support airborne MPs as a novel trigger for upper respiratory allergic disease.
Pathophysiological effects of inhaled airborne microplastics on the respiratory epithelial barrier: A review
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Tiny plastic particles floating in the air we breathe may be doing more damage to our lungs than we realized. This review of existing research found that when these microplastics land in our airways, they can trigger cell stress, inflammation, and damage to the protective lining of our lungs—potentially making respiratory problems worse over time. While scientists still need more long-term studies to fully understand the risks, this research is an early warning sign that the plastic pollution in our air isn't just an environmental issue—it could be a health issue too.
The Impact of Microplastics on Allergy: Current Status and Future Research Directions
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This study reviews current evidence on how microplastics may influence allergic responses, noting that microplastics can compromise epithelial barriers and promote type 2 inflammation associated with allergies. The authors emphasize an urgent need for research into dose-dependent immunotoxicological mechanisms to better understand the relationship between microplastic exposure and allergy development. The study calls for evidence-based policies to reduce microplastic exposure and its potential contribution to the growing allergy burden.
Preliminary Study of Microplastic in Allergic Rhinitis
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Researchers compared microplastic concentrations in the nasal cavities of patients with allergic rhinitis versus healthy individuals. They found significantly higher levels of microplastics in the noses of people with the allergic condition. This preliminary finding suggests a potential connection between microplastic exposure in the nasal passages and allergic airway conditions, though more research is needed to understand the relationship.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.