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Rapid induction of experimental AA amyloidosis in mink by intravenous injection of amyloid enhancing factor
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Cell Biology.
2008 (English)In: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, Vol. 15, no 1, 20-28 p.Article in journal (Refereed) Published
Abstract [en]

Studies of amyloid enhancing factor (AEF)-induced amyloidosis are commonly performed in mice. In mink, earlier studies of amyloid A (AA) amyloidosis showed that the predeposition phase was highly variable. Thus, the aim of the study was to establish an AEF-induced AA amyloidosis model in mink to facilitate studies of early amyloid deposition in a species with prominent ellipsoids, anatomical structures lacking in mice but present in most other mammals. AEF was extracted from mink spleens containing AA. Mink received one intravenous injection of AEF and repeated subcutaneous injections of lipopolysaccharide (LPS) as an inflammatory stimulus. On day 4, small amounts of amyloid were detected in the marginal zone in the spleen. On day 7, considerable amyloid deposition was detected in the ellipsoids and marginal zones in the spleen and in the space of Disse in the liver. By immunohistochemistry, the deposits were identified as AA amyloid. Immunolabeling was also detected in lymphoid follicles and the red pulp of some animals. Control animals receiving only AEF were negative. Control animals receiving only LPS were negative except for one of three animals which had small amounts of amyloid in the spleen. The mink AEF model is a suitable tool to study the development of AA amyloidosis in a species with a spleen containing both well-developed ellipsoids and marginal zone. © 2008 Informa UK Ltd.

Place, publisher, year, edition, pages
2008. Vol. 15, no 1, 20-28 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-44956DOI: 10.1080/13506120701815332Local ID: 78438OAI: diva2:265818
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2011-01-10

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Westermark, Gunilla
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