Particulate matter (PM) exposure is linked to the worsening of respiratory conditions, including allergic rhinitis (AR), as it can trigger nasal and systemic inflammation. To unveil the underlying molecular mechanisms, we investigated the effects of PM exposure on the release of plasmatic extracellular vesicles (EV) and on the complex cross-talk between the host and the nasal microbiome. To this aim, we evaluated the effects of PM10 and PM2.5 exposures on both the bacteria-derived-EV portion (bEV) and the host-derived EVs (hEV), as well as on bacterial nasal microbiome (bNM) features in 26 AR patients and 24 matched healthy subjects (HS). In addition, we assessed the role exerted by the bNM as a modifier of PM effects on the complex EV signaling network in the paradigmatic context of AR. We observed that PM exposure differently affected EV release and bNM composition in HS compared to AR, thus potentially contributing to the molecular mechanisms underlying AR. The obtained results represent the first step towards the understanding of the complex signaling network linking external stimuli, bNM composition, and the immune risponse.

Particulate matter exposure and allergic rhinitis : The role of plasmatic extracellular vesicles and bacterial nasal microbiome / J. Mariani, S. Iodice, L. Cantone, G. Solazzo, P. Marraccini, E. Conforti, P.A. Bulsara, M.S. Lombardi, R.P. Howlin, V. Bollati, L. Ferrari. - In: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH. - ISSN 1661-7827. - 18:20(2021), pp. 10689.1-10689.19. [10.3390/ijerph182010689]

Particulate matter exposure and allergic rhinitis : The role of plasmatic extracellular vesicles and bacterial nasal microbiome

J. Mariani
Primo
;
S. Iodice;L. Cantone;G. Solazzo;E. Conforti;V. Bollati;L. Ferrari
Ultimo
2021

Abstract

Particulate matter (PM) exposure is linked to the worsening of respiratory conditions, including allergic rhinitis (AR), as it can trigger nasal and systemic inflammation. To unveil the underlying molecular mechanisms, we investigated the effects of PM exposure on the release of plasmatic extracellular vesicles (EV) and on the complex cross-talk between the host and the nasal microbiome. To this aim, we evaluated the effects of PM10 and PM2.5 exposures on both the bacteria-derived-EV portion (bEV) and the host-derived EVs (hEV), as well as on bacterial nasal microbiome (bNM) features in 26 AR patients and 24 matched healthy subjects (HS). In addition, we assessed the role exerted by the bNM as a modifier of PM effects on the complex EV signaling network in the paradigmatic context of AR. We observed that PM exposure differently affected EV release and bNM composition in HS compared to AR, thus potentially contributing to the molecular mechanisms underlying AR. The obtained results represent the first step towards the understanding of the complex signaling network linking external stimuli, bNM composition, and the immune risponse.
Allergic rhinitis; Bacterial nasal microbiome; Extracellular vesicles; Particulate matter exposure; Bacteria; Humans; Particulate Matter; Extracellular Vesicles; Microbiota; Rhinitis, Allergic
Settore MED/44 - Medicina del Lavoro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/890310
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