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Title: Microscopic Findings in the Cardiac Muscle of Stranded Extreme Deep-Diving Cuvier's Beaked Whales (Ziphius cavirostris)
Authors: Camara, Nakita 
Fernández Rodríguez, Antonio Jesús 
Herráez Thomas, Pedro Manuel 
Arbelo Hernández, Manuel Antonio 
Andrada Borzollino, Marisa Ana 
Suarez Santana, Cristian Manuel 
Sierra Pulpillo, Eva María 
UNESCO Clasification: 240119 Zoología marina
310907 Patología
Keywords: Cardiac lesions
Cuvier's beaked whales
Histopathological findings
Stranded cetaceans
Stress cardiomyopathy
Issue Date: 2022
Project: Patologia Embolica " Gaseosa / Grasa " en Cetaceos 
Journal: Microscopy and Microanalysis 
Abstract: Considerable information has been gained over the last few decades on several disease processes afflicting free-ranging cetaceans from a pathologist's point of view. Nonetheless, there is still a dearth of studies on the hearts of these species. For this reason, we aimed to improve our understanding of cardiac histological lesions occurring in free-ranging stranded cetaceans and, more specifically, in deep-diving Cuvier's beaked whales. The primary cardiac lesions that have been described include vascular changes, such as congestion, edema, hemorrhage, leukocytosis, and intravascular coagulation; acute degenerative changes, which consist of contraction band necrosis, wavy fibers, cytoplasmic hypereosinophilia, and perinuclear vacuolization; infiltration of inflammatory cells; and finally, the presence and/or deposition of different substances, such as interstitial myoglobin globules, lipofuscin pigment, polysaccharide complexes, and intra- and/or extravascular gas emboli and vessel dilation. This study advances our current knowledge about the histopathological findings in the cardiac muscle of cetaceans, and more specifically, of Cuvier's beaked whales.
ISSN: 1431-9276
DOI: 10.1017/S1431927622000605
Source: Microscopy and Microanalysis [ISSN 1431-9276], v. 28 (5), p. 1641-1648
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