PMID- 32980469 OWN - NLM STAT- MEDLINE DCOM- 20210104 LR - 20210104 IS - 1096-1208 (Electronic) IS - 0882-4010 (Linking) VI - 149 DP - 2020 Dec TI - Immunopathogenesis of infectious bronchitis virus Q1 in specific pathogen free chicks. PG - 104535 LID - S0882-4010(20)30901-3 [pii] LID - 10.1016/j.micpath.2020.104535 [doi] AB - The immunopathogenesis of avian coronavirus, infectious bronchitis virus (IBV) Q1, was investigated in specific pathogen free chicks. Following infection, chicks exhibited respiratory clinical signs and reduced body weight. Oropharyngeal (OP) and cloacal (CL) swabs were collected at intervals and found to be RT-PCR positive, with a greater number of partial-S1 amino acid changes noted in CL swabs compared to OP swabs. In tissue samples, IBV viral load peaked 9 days post infection (dpi) in the trachea and kidneys, and 14 dpi in the proventriculus. At 28 dpi, ELISA data showed that 63% of infected chicks seroconverted. There was significantly higher mRNA up-regulation of IFN-alpha, TLR3, MDA5, LITAF, IL-1beta and IL-6 in the trachea compared to the kidneys. Findings presented here demonstrate that this Q1 isolate induces greater lesions and host innate immune responses in chickens' tracheas compared to the kidneys. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Manswr, B AU - Manswr B AD - Institute of Infection and Global Health, University of Liverpool, Leahurst, UK; Faculty of Veterinary Medicine, Diyala University, Iraq. FAU - Ball, C AU - Ball C AD - Institute of Infection and Global Health, University of Liverpool, Leahurst, UK. FAU - Forrester, A AU - Forrester A AD - Institute of Infection and Global Health, University of Liverpool, Leahurst, UK. FAU - Chantrey, J AU - Chantrey J AD - Institute of Infection and Global Health, University of Liverpool, Leahurst, UK; Institute of Veterinary Science, University of Liverpool, Leahurst, UK. FAU - Ganapathy, K AU - Ganapathy K AD - Institute of Infection and Global Health, University of Liverpool, Leahurst, UK. Electronic address: gana@liverpool.ac.uk. LA - eng PT - Journal Article DEP - 20200924 PL - England TA - Microb Pathog JT - Microbial pathogenesis JID - 8606191 RN - 0 (Antibodies, Viral) RN - 0 (Cytokines) SB - IM MH - Animals MH - Antibodies, Viral/blood MH - Body Weight MH - Chickens/*immunology MH - Coronavirus Infections/immunology/pathology/*veterinary/virology MH - Cytokines/blood/genetics/metabolism MH - Gene Expression MH - Immunity, Innate MH - Infectious bronchitis virus/genetics/*immunology/isolation & purification MH - Poultry Diseases/*immunology/pathology/*virology MH - Specific Pathogen-Free Organisms MH - Viral Load OTO - NOTNLM OT - Avian coronavirus OT - Gene transcription OT - Immune responses OT - Infectious bronchitis virus OT - Pathogenesis OT - Specific pathogen free EDAT- 2020/09/28 06:00 MHDA- 2021/01/05 06:00 CRDT- 2020/09/27 20:24 PHST- 2020/04/01 00:00 [received] PHST- 2020/07/17 00:00 [revised] PHST- 2020/09/21 00:00 [accepted] PHST- 2020/09/28 06:00 [pubmed] PHST- 2021/01/05 06:00 [medline] PHST- 2020/09/27 20:24 [entrez] AID - S0882-4010(20)30901-3 [pii] AID - 10.1016/j.micpath.2020.104535 [doi] PST - ppublish SO - Microb Pathog. 2020 Dec;149:104535. doi: 10.1016/j.micpath.2020.104535. Epub 2020 Sep 24.