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Background Pathological Changes in Minipigs: A Comparison of the Incidence and Nature among Different Breeds and Populations of Minipigs.

Helke, Kristi L; Nelson, Keith N; Sargeant, Aaron M; Jacob, Binod; McKeag, Sean; Haruna, Julius; Vemireddi, Vimala; Greeley, Melanie; Brocksmith, Derek; Navratil, Nicole; Stricker-Krongrad, Alain; Hollinger, Charlotte.
Toxicol Pathol; 44(3): 325-37, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26534940
Swine, especially the miniature swine or minipigs, are increasingly being used in preclinical safety assessment of small molecules, biopharmaceutical agents, and medical devices as an alternate nonrodent species. Although swine have been used extensively in biomedical research, there is a paucity of information in the current literature detailing the incidence of background lesions and differences in incidence between commonly used breeds. This article is a collaborative effort between multiple organizations to define and document lesions found in the common breeds of minipigs used for toxicological risk assessment in North America (NA) and the European Union (EU). We retrospectively assessed 10 years of historical control data from several institutions located in NA and EU, covering the period of 2004-2015. Here we report the background lesions with consideration of breed and geographical location. To our knowledge, this is the first report documenting spontaneous background lesions in commonly used breeds of swine in both NA and EU. This report serves as a resource to pathologists and will aid in interpretation of findings and differentiation of background from test article-related changes.
Selo DaSilva