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• W2974891755 endingPage "103292" @default.
• W2974891755 startingPage "103292" @default.
• W2974891755 abstract "The interaction between chronic inflammation and neural dysfunction points to a link between the nervous and immune systems in the airways. In particular, environmental exposure to nanoparticles (NPs), defined as particulate matter having one dimension <100 nm, is associated with an enhanced risk of childhood and adult asthma. However, the impact of NPs on the neural response in asthma remains to be determined. This study determined the impact of NPs on neuroinflammation in a mouse model of allergic asthma. Ovalbumin (OVA) sensitized mice were treated with saline (Sham), OVA challenged and exposed to 200 μg/m3 NPs 1 h a day for 3 days on days 21–23 in a closed-system chamber attached to a ultrasonic nebulizer. The effect of NPs on the levels of neuropeptides, transient receptor potential vanilloid 1 (TRPV1), TRPV4, P2 × 4, and P2 × 7 was assessed by enzyme-linked immunosorbent assays, immunoblotting, and immunohistochemistry. NP exposure increased airway inflammation and responsiveness in OVA mice, and these increases were augmented in OVA plus NP-exposed mice. The lung tissue levels of TRPV1, TRPV4, P2 × 4, and P2 × 7 were increased in OVA mice, and these increases were augmented in OVA plus NP-exposed mice. The substance P, adenosine triphosphate (ATP), and calcitonin gene-related peptide (CGRP) levels in bronchoalveolar lavage fluid were increased in OVA mice, and these increases were augmented in OVA plus NP-exposed mice. Bradykinin, ATP, and CGRP were dose dependently increased in NP-exposed normal human bronchial epithelial (NHBE) cells. The calcium concentration was increased in NHBE cells exposed to NPs for 8 h. These results indicate that neuroinflammation can be involved in the pathogenesis of bronchial asthma and that NPs can exacerbate asthma via neuromediator release." @default.
• W2974891755 created "2019-09-26" @default.
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• W2974891755 date "2020-01-01" @default.
• W2974891755 modified "2023-09-25" @default.
• W2974891755 title "Effects of nanoparticles on neuroinflammation in a mouse model of asthma" @default.
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• W2974891755 doi "https://doi.org/10.1016/j.resp.2019.103292" @default.
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