Abstract:
:Limited deep studies are available in the field of early stages of pathogenesis of Newcastle disease virus (NDV) infection and tissue tropism of NDV. In this study, 24 specific pathogen free (SPF) chickens of white leghorn breed were infected with Newcastle disease (ND) by intranasal administration of 10⁵ 50% EID50/0.1 mL of velogenic NDV (vNDV). A second group of 15 chickens were kept as a control group. Chickens were monitored every day to record clinical signs. Infected chickens were euthanized by cervical dislocation at successive times, namely at hours (hrs) 2, 4, 6, 12, days 1, 2, 4, and 6 post-inoculation (pi). Whereas, control group chickens were euthanized on days 0, 1, 2, 4, and 6 pi. Tissues of brain, trachea, lung, caecal tonsil, liver, kidney, spleen, heart, proventriculus, intestine, and thymus were collected, fixed in 10% buffered formalin, embedded in paraffin, and sectioned. HS staining, immunoperoxidase staining (IPS) and in situ PCR were applied. It was concluded that at hr 2 pi, virus seemed to be inclined to trachea and respiratory tract. Meanwhile, it attacked caecal tonsils, intestine and bursa of Fabricus. While primary viraemia was ongoing, virus created footing in kidney and thymus. At hr 4 pi, proventriculus, liver, and spleen were attacked. However, at hr 6 pi, brain and heart were involved. Secondary viraemia probably started as early as hr 12 pi since all collected tissues were positive. Tissue tropism was determined in trachea, caecal tonsil, liver, bursa of Fabricius, intestine, proventriculus, lung, spleen, thymus, kidney, heart, and brain.
journal_name
Microb Pathogjournal_title
Microbial pathogenesisauthors
Hussein EA,Hair-Bejo M,Omar AR,Arshad SS,Hani H,Balakrishnan KN,Yakubu Y,Saeed MI,Aini Idoi
10.1016/j.micpath.2019.02.017subject
Has Abstractpub_date
2019-04-01 00:00:00pages
213-223eissn
0882-4010issn
1096-1208pii
S0882-4010(18)31255-5journal_volume
129pub_type
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journal_title:Microbial pathogenesis
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journal_title:Microbial pathogenesis
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journal_title:Microbial pathogenesis
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journal_title:Microbial pathogenesis
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journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2018.05.045
更新日期:2018-09-01 00:00:00
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journal_title:Microbial pathogenesis
pub_type: 杂志文章
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更新日期:2018-09-01 00:00:00
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journal_title:Microbial pathogenesis
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pub_type: 杂志文章
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更新日期:1988-07-01 00:00:00
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journal_title:Microbial pathogenesis
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journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1006/mpat.1995.0074
更新日期:1995-12-01 00:00:00
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journal_title:Microbial pathogenesis
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