Gamma-Gandy bodies in a black bear (Ursus americanus) in Mexico

• DOI: https://doi.org/10.22533/at.ed.8208112620013

• Palavras-chave: Gamna-Gandy inclusion bodies, black bear, Prussian blue staining, iron deposits.

• Keywords: Gamna-Gandy inclusion bodies, black bear, Prussian blue staining, iron deposits.

• Abstract:

  A 15-year-old American black bear was found dead on a road in the municipality of Sabinas, in the state of Coahuila de Zaragoza, Mexico. The main findings of the necropsy included poor body condition (2 out of 5), oral cavity with plant material, perforation of the tongue, and several missing teeth. In the musculoskeletal evaluation, the left prescapular lymph node was observed to be enlarged (7 cm long x 3 cm wide x 1.5 cm high), with a creamy white color and a hard, solid consistency when cut. Under a polarized light microscope, several refractive filamentous structures were observed in the cortical cell layer, some in the interstitial space, while others appeared as intracytoplasmic bodies within giant cells. After several discriminatory stains, specimens stained with Prussian blue revealed intense blue structures consistent with Gamna-Gandy inclusion bodies.