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Proteome analysis of bronchoalveolar lavage from calves infected with bovine respiratory syncytial virus-Insights in pathogenesis and perspectives for new treatments
Swedish Univ Agr Sci, Host Pathogen Interact Grp, Dept Clin Sci, Uppsala, Sweden..
Swedish Univ Agr Sci, Host Pathogen Interact Grp, Dept Clin Sci, Uppsala, Sweden..
Swedish Univ Agr Sci, Host Pathogen Interact Grp, Dept Clin Sci, Uppsala, Sweden..
Swedish Univ Agr Sci, Sect Pathol, Dept Biomed Sci & Vet Publ Hlth, Uppsala, Sweden..
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2017 (English)In: PLoS Pathogens, ISSN 1553-7366, E-ISSN 1553-7374, Vol. 12, no 10, e0186594Article in journal (Refereed) Published
Abstract [en]

Human and bovine respiratory syncytial viruses (HRSV/BRSV) are major causes of severe lower respiratory tract infections in children and calves, respectively. Shared epidemiological, clinical, pathological and genetic characteristics of these viruses make comparative research highly relevant. To characterise the host response against BRSV infection, bronchoalveolar lavage supernatant (BAL) from i) non-vaccinated, BRSV-infected ii) vaccinated, BRSV-infected and iii) non-infected calves was analysed by tandem mass spectrometry. Proteins were semi-quantified and protein expression was validated by immunoblotting. Correlations between selected proteins and pathology, clinical signs and virus shedding were investigated. Calves with BRSV-induced disease had increased total protein concentrations and a decreased number of proteins identified in BAL. The protein profile was characterised by neutrophil activation and a reduction in identified antioxidant enzymes. The presence of neutrophils in alveolar septa, the expression level of neutrophil-related or antioxidant proteins and LZTFL1 correlated significantly with disease. Citrullinated histone 3, an indicator of extracellular traps (ETs), was only detected in non-vaccinated, BRSV-infected animals. By bringing disequilibrium in the release and detoxification of reactive oxygen species, generating ETs and causing elastine degradation, exaggerated neutrophil responses might exacerbate RSV-induced disease. Neutrophil-mitigating or antioxidant treatments should be further explored.

Place, publisher, year, edition, pages
PUBLIC LIBRARY SCIENCE , 2017. Vol. 12, no 10, e0186594
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Agricultural and Veterinary sciences
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URN: urn:nbn:se:uu:diva-337190DOI: 10.1371/journal.pone.0186594ISI: 000413054800048PubMedID: 29036182OAI: oai:DiVA.org:uu-337190DiVA: diva2:1168612
Available from: 2017-12-21 Created: 2017-12-21 Last updated: 2017-12-21

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