Co-localization of Middle East respiratory syndrome coronavirus (-CoV) and dipeptidyl peptidase-4 in the respiratory tract and lymphoid tissues of pigs and llamas
Te, Nigeer (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Vergara-Alert, Júlia (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Lehmbecker, Annika (University of Veterinary Medicine)
Pérez-Maíllo, Mónica (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Haagmans, Bart L. (Erasmus Medical Center)
Baumgärtner, Wolfgang (University of Veterinary Medicine)
Bensaid, Albert (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Segalés Coma, Joaquim (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)

Data:	2018
Resum:	This study investigated the co-localization of the Middle East respiratory syndrome coronavirus (-CoV) and its receptor dipeptidyl peptidase-4 (4) by immunohistochemistry (IHC) across respiratory and lymphoid organs of experimentally -CoV infected pigs and llamas. Also, scanning electron microscopy was performed to assess the ciliary integrity of respiratory epithelial cells in both species. In pigs, on day 2 post-inoculation (p. i. ), 4--CoV co-localization was detected in medial turbinate epithelium. On day 4 p. i. , the virus/receptor co-localized in frontal and medial turbinate epithelial cells in pigs, and epithelial cells distributed unevenly through the whole nasal cavity and in the cervical lymph node in llamas. -CoV viral nucleocapsid was mainly detected in upper respiratory tract sites on days 2 and 4 p. i. in pigs and day 4 p. i. in llamas. No -CoV was detected on day 24 p. i. in any tissue by . While pigs showed severe ciliary loss in the nasal mucosa both on days 2 and 4 p. i. and moderate loss in the trachea on days 4 and 24 p. i. , ciliation of respiratory organs in llamas was not significantly affected. Obtained data confirm the role of 4 for -CoV entry in respiratory epithelial cells of llamas. Notably, several nasal epithelial cells in pigs were found to express viral antigen but not 4, suggesting the possible existence of other molecule/s facilitating virus entry or down regulation of 4 upon infection.
Nota:	Altres ajuts: ZAPI/115760
Nota:	Altres ajuts: CSC/201608150108
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Dipeptidyl peptidase-4 (4) ; Immunohistochemistry ; Llama ; Middle East respiratory syndrome coronavirus (-CoV) ; Pig ; Scanning electron microscopy
Publicat a:	Transboundary and Emerging Diseases, Vol. 66 (december 2018) , p. 831-841, ISSN 1865-1682

DOI: 10.1111/tbed.13092
PMID: 30520548

11 p, 3.2 MB

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