Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease
Gills from Atlantic salmon with experimentally induced amoebic gill disease ( Neoparamoeba spp.) were examined with transmission electron microscopy to assess pathology and host-cell responses. Amoebae were found either on the surface epithelium or with pseudopodia extending deeply into invagination...
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American College of Veterinary Pathologists
2007
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ftunivtasmania:oai:eprints.utas.edu.au:3933 2023-05-15T15:31:18+02:00 Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease Lovy, J Becker, J Speare, J Wadowski, DW Wright, GM Powell, MD 2007 application/pdf https://eprints.utas.edu.au/3933/ https://eprints.utas.edu.au/3933/1/3933.pdf http://www.vetpathology.org/content/vol44/issue5/ en eng American College of Veterinary Pathologists https://eprints.utas.edu.au/3933/1/3933.pdf Lovy, J, Becker, J, Speare, J, Wadowski, DW, Wright, GM and Powell, MD 2007 , 'Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease' , Veterinary Pathology, vol. 44, no. 5 , pp. 663-671 . 300703 Aquaculture Amoebic gill disease electron microscopy eosinophils fish gills Article PeerReviewed 2007 ftunivtasmania 2020-05-30T07:17:47Z Gills from Atlantic salmon with experimentally induced amoebic gill disease ( Neoparamoeba spp.) were examined with transmission electron microscopy to assess pathology and host-cell responses. Amoebae were found either on the surface epithelium or with pseudopodia extending deeply into invaginations of epithelial cells. The amoebae had various densities along the plasma membrane and contained electron-dense deposits within their cytoplasm. Surface epithelial cells sloughed from the gills and had features consistent with apoptosis, including rounded shape, loss of surface microridges, and hypercondensation of nuclear chromatin. Affected areas of gills had fusion of secondary lamellae with interlamellar spaces occupied by mitotic epithelial cells and eosinophils. Eosinophils contained abundant fusiform-shaped granules that measured approximately 1 µm long and 360 nm wide. The granule consisted of an electron-dense matrix with a central inclusion that was less electron-dense, consisting of particulate and fibrillar material. In many instances, the central inclusion appeared empty and 90% of the eosinophils had morphology suggestive of piecemeal degranulation. Also observed within affected areas were a few neutrophils, mucous cells releasing mucus, and a small number of dendritic-like cells. Article in Journal/Newspaper Atlantic salmon Salmo salar University of Tasmania: UTas ePrints |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
300703 Aquaculture Amoebic gill disease electron microscopy eosinophils fish gills |
spellingShingle |
300703 Aquaculture Amoebic gill disease electron microscopy eosinophils fish gills Lovy, J Becker, J Speare, J Wadowski, DW Wright, GM Powell, MD Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
topic_facet |
300703 Aquaculture Amoebic gill disease electron microscopy eosinophils fish gills |
description |
Gills from Atlantic salmon with experimentally induced amoebic gill disease ( Neoparamoeba spp.) were examined with transmission electron microscopy to assess pathology and host-cell responses. Amoebae were found either on the surface epithelium or with pseudopodia extending deeply into invaginations of epithelial cells. The amoebae had various densities along the plasma membrane and contained electron-dense deposits within their cytoplasm. Surface epithelial cells sloughed from the gills and had features consistent with apoptosis, including rounded shape, loss of surface microridges, and hypercondensation of nuclear chromatin. Affected areas of gills had fusion of secondary lamellae with interlamellar spaces occupied by mitotic epithelial cells and eosinophils. Eosinophils contained abundant fusiform-shaped granules that measured approximately 1 µm long and 360 nm wide. The granule consisted of an electron-dense matrix with a central inclusion that was less electron-dense, consisting of particulate and fibrillar material. In many instances, the central inclusion appeared empty and 90% of the eosinophils had morphology suggestive of piecemeal degranulation. Also observed within affected areas were a few neutrophils, mucous cells releasing mucus, and a small number of dendritic-like cells. |
format |
Article in Journal/Newspaper |
author |
Lovy, J Becker, J Speare, J Wadowski, DW Wright, GM Powell, MD |
author_facet |
Lovy, J Becker, J Speare, J Wadowski, DW Wright, GM Powell, MD |
author_sort |
Lovy, J |
title |
Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
title_short |
Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
title_full |
Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
title_fullStr |
Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
title_full_unstemmed |
Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease |
title_sort |
ultrastructural examination of the host cellular response in the gills of atlantic salmon, salmo salar, with amoebic gill disease |
publisher |
American College of Veterinary Pathologists |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/3933/ https://eprints.utas.edu.au/3933/1/3933.pdf http://www.vetpathology.org/content/vol44/issue5/ |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://eprints.utas.edu.au/3933/1/3933.pdf Lovy, J, Becker, J, Speare, J, Wadowski, DW, Wright, GM and Powell, MD 2007 , 'Ultrastructural examination of the host cellular response in the gills of Atlantic salmon, Salmo salar, with amoebic gill disease' , Veterinary Pathology, vol. 44, no. 5 , pp. 663-671 . |
_version_ |
1766361787181039616 |