2000
DOI: 10.1292/jvms.62.129
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Epithelial Cell Kinetics in the Inflammatory Process of Chicken Trachea Infected with Infectious Bronchitis Virus

Abstract: ABSTRACT. All stages of degeneration and regeneration in chicken tracheal epithelium were studied morphologically following an intratracheal inoculation of infectious bronchitis virus (IBV). Viral antigen was detected in the cytoplasm of tracheal epithelium from 1 to 7 days post-inoculation (d.p.i.) with a peak on 3 d.p.i. At 1 d.p.i., almost all epithelial cells were involved in the degeneration. At this time, labelling index of bromodeoxyuridine (BrdU) in the basal cells showed significantly high value compa… Show more

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Cited by 14 publications
(11 citation statements)
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“…After 7 days p.i. in the regenerative stage, there was a marked reduction in the extent of the cellular infiltration into the lamina propria and submucosa [3,7,13]. In our experiment, chronological changes of the inflammatory cell infiltration by H-E staining technique were similar to those described previously.…”
Section: Discussionsupporting
confidence: 86%
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“…After 7 days p.i. in the regenerative stage, there was a marked reduction in the extent of the cellular infiltration into the lamina propria and submucosa [3,7,13]. In our experiment, chronological changes of the inflammatory cell infiltration by H-E staining technique were similar to those described previously.…”
Section: Discussionsupporting
confidence: 86%
“…There have been many reports on tracheitis infected with IBV. Although the pathology on the affected trachea is varied due to different inoculation route, strain and inoculum size of IBV and age of chicken infected, chronological tracheal changes are essentially the same [3,4,7,10,13,18]. According to those previous reports, as the inflammatory cell reaction in the trachea infected with IBV, some infiltration of lymphocyte was seen in the lamina propria at 18 hr p.i.…”
Section: Discussionmentioning
confidence: 92%
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“…Control groups infected with IBV alone were not included because it was not the aim to study IBV-induced histopathology, which has already been extensively described in literature (Dhinakar and Jones, 1997;Di Matteo et al, 2000;Fulton et al, 1993;Cavanagh and Naqi, 2003;Geilhausen et al, 1973;Janse et al, 1994;Kotani et al, 2000;Nakamura et al, 1992;Ratanasethakul and Cumming, 1983;Riddell, 1987), but to assess the increase in macro-and microscopical lesions of the respiratory tract in broilers infected with IBV and infected with E. coli 5 days later in comparison with broilers infected with E. coli alone. In mixed infection models it is very difficult, if not impossible, to quantify and qualify exactly which lesions can be ascribed to either pathogen due to the possible occurrence of synergism.…”
Section: Discussionmentioning
confidence: 99%