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Systemic Amyloidosis in an African Tiger Snake (Telescopus semiannulatus)
University of Calif San Diego, CA 92103 USA.
University of Calif San Diego, CA 92103 USA.
Linköping University, Department of Physics, Chemistry and Biology, Chemistry. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-5582-140X
University of Minnesota, MN 55108 USA.
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2017 (English)In: Journal of Comparative Pathology, ISSN 0021-9975, E-ISSN 1532-3129, Vol. 157, no 2-3, 136-140 p.Article in journal (Refereed) Published
Abstract [en]

An adult male African tiger snake (Telescopts semiannulatus) was diagnosed with disseminated mycobacteriosis and a hepatic biliary cystadenocarcinoma. Histologically, the spleen was largely replaced by extracellular deposits of eosinophilic, fibrillar to hyaline material. Similar material was also present in the testicular interstitium and occasional blood vessel walls. This material was congophilic with strong green birefringence under polarized light and emitted fluorescence when bound to the luminescent-conjugated oligothiophene, h-FTAA, an amyloid binding probe. Ultrastructurally, deposits were composed of aggregates of haphazardly arranged, non-branching fibrils up to 8 nm in diameter and of indeterminate length. These findings all supported a diagnosis of amyloidosis, most likely amyloid A (AA) type based on concurrent inflammatory disease in this snake. However, immunohistochemistry for serum amyloid A was negative. There are only rare previous reports of amyloidosis in reptiles and many have been incompletely characterized. This case presents a thorough investigation into an occurrence of systemic amyloidosis in a snake, including a novel use of luminescent-conjugated oligothiophene binding in a reptile to confirm the diagnosis. (C) 2017 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD , 2017. Vol. 157, no 2-3, 136-140 p.
Keyword [en]
African tiger snake; amyloid; Congo red; electron microscopy
National Category
Immunology in the medical area
Identifiers
URN: urn:nbn:se:liu:diva-142441DOI: 10.1016/j.jcpa.2017.07.001ISI: 000412966700008PubMedID: 28942295OAI: oai:DiVA.org:liu-142441DiVA: diva2:1153643
Available from: 2017-10-31 Created: 2017-10-31 Last updated: 2017-10-31

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