Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan
Thirteen whooper swans (Cygnus cygnus) affected with schistosomiasis were examined pathologically. Venous hypertrophy, characterized by marked nodular proliferation of medial smooth muscle fibers with frequent obliteration of the vascular lumen, was observed in eight of the 13 whooper swans. Venous...
Published in: | Avian Diseases |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | English |
Published: |
American Association of Avian Pathologists
2010
|
Subjects: | |
Online Access: | https://doi.org/10.1637/9034-082209-Case.1 |
id |
ftbioone:10.1637/9034-082209-Case.1 |
---|---|
record_format |
openpolar |
spelling |
ftbioone:10.1637/9034-082209-Case.1 2023-07-30T04:03:07+02:00 Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto world 2010-03-01 text/HTML https://doi.org/10.1637/9034-082209-Case.1 en eng American Association of Avian Pathologists doi:10.1637/9034-082209-Case.1 All rights reserved. https://doi.org/10.1637/9034-082209-Case.1 Text 2010 ftbioone https://doi.org/10.1637/9034-082209-Case.1 2023-07-09T10:41:12Z Thirteen whooper swans (Cygnus cygnus) affected with schistosomiasis were examined pathologically. Venous hypertrophy, characterized by marked nodular proliferation of medial smooth muscle fibers with frequent obliteration of the vascular lumen, was observed in eight of the 13 whooper swans. Venous hypertrophy was located in the medium-sized veins of the mesentery, the serosa, and the muscular layer of the duodenum, jejunum, ileum, and cecum. In addition, vascular lesions were seen in the capsule and parenchymal interstitia of the liver, spleen, kidney, heart, aorta, air sac, and pleura. In mild lesions, segmental proliferation of medial smooth muscles was observed in the venous medium of the mesentery and serosa. Moderate lesions had a proliferation of smooth muscles in the veins with obliteration of venous lumens. In marked lesions, more severe proliferation of veins extended into the intestinal muscular layers and depressed them. Schistosome parasites were found in the venous lumens of each of the eight whooper swans with vascular lesions. Bile pigments and hemosiderin were observed in the livers of whooper swans. In addition, adult nematodes (Sarconema sp.) were localized in the myocardium of four of the eight whooper swans. The venous hypertrophy may be caused by the proliferation of medial smooth muscle fibers induced by schistosomiasis. Text Cygnus cygnus BioOne Online Journals Avian Diseases 54 1 146 150 |
institution |
Open Polar |
collection |
BioOne Online Journals |
op_collection_id |
ftbioone |
language |
English |
description |
Thirteen whooper swans (Cygnus cygnus) affected with schistosomiasis were examined pathologically. Venous hypertrophy, characterized by marked nodular proliferation of medial smooth muscle fibers with frequent obliteration of the vascular lumen, was observed in eight of the 13 whooper swans. Venous hypertrophy was located in the medium-sized veins of the mesentery, the serosa, and the muscular layer of the duodenum, jejunum, ileum, and cecum. In addition, vascular lesions were seen in the capsule and parenchymal interstitia of the liver, spleen, kidney, heart, aorta, air sac, and pleura. In mild lesions, segmental proliferation of medial smooth muscles was observed in the venous medium of the mesentery and serosa. Moderate lesions had a proliferation of smooth muscles in the veins with obliteration of venous lumens. In marked lesions, more severe proliferation of veins extended into the intestinal muscular layers and depressed them. Schistosome parasites were found in the venous lumens of each of the eight whooper swans with vascular lesions. Bile pigments and hemosiderin were observed in the livers of whooper swans. In addition, adult nematodes (Sarconema sp.) were localized in the myocardium of four of the eight whooper swans. The venous hypertrophy may be caused by the proliferation of medial smooth muscle fibers induced by schistosomiasis. |
author2 |
Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto |
format |
Text |
author |
Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto |
spellingShingle |
Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
author_facet |
Masataka Akagami Kikuyasu Nakamura Hiroto Nishino Satoko Seki Hiromi Shimizu Yu Yamamoto |
author_sort |
Masataka Akagami |
title |
Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
title_short |
Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
title_full |
Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
title_fullStr |
Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
title_full_unstemmed |
Pathogenesis of Venous Hypertrophy Associated with Schistosomiasis in Whooper Swans (Cygnus cygnus) in Japan |
title_sort |
pathogenesis of venous hypertrophy associated with schistosomiasis in whooper swans (cygnus cygnus) in japan |
publisher |
American Association of Avian Pathologists |
publishDate |
2010 |
url |
https://doi.org/10.1637/9034-082209-Case.1 |
op_coverage |
world |
genre |
Cygnus cygnus |
genre_facet |
Cygnus cygnus |
op_source |
https://doi.org/10.1637/9034-082209-Case.1 |
op_relation |
doi:10.1637/9034-082209-Case.1 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1637/9034-082209-Case.1 |
container_title |
Avian Diseases |
container_volume |
54 |
container_issue |
1 |
container_start_page |
146 |
op_container_end_page |
150 |
_version_ |
1772814075952103424 |