A Retrospective Study of Hepatic Hemosiderosis and Iron Storage Disease in Several Captive and Free-Ranging Avian Species

Oliveira, Ayisa Rodrigues de; Santos, Daniel; Pereira, Marianna de Paula Martins; Carvalho, Tatiane Furtado de; Tinoco, Herlandes Penha; Pessanha, Angela Tinoco; Costa, Maria E.; Coelho, Carlyle Mendes; Paixão, Tatiane Alves da; Carvalho, Marcelo Pires Nogueira de; Santos, Renato Lima

doi:10.1638/2021-0130

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…These results clearly suggested the presence of ISD characterized by the excessive accumulation of iron or ferritin in the liver [17,21]. Considering that ISD can cause chronic lesions, including ischemia and fibrosis to the liver via free-radical generation in cells, it is suggested that ISD-mediated prolonged liver damage might have been the primary cause of death in the bird [21,22]. Other parenchymal organs, such as the lung and heart, showed age-related lesions.…”

Section: Case Presentationmentioning

confidence: 85%

“…These results clearly suggested the presence of ISD characterized by the excessive accumulation of iron or ferritin in the liver [17,21]. Considering that ISD can cause chronic lesions, including ischemia and fibrosis to the liver via free-radical generation in cells, it is suggested that ISD-mediated prolonged liver damage might have been the primary cause of death in the bird [21,22]. Following histopathological diagnosis, it was also revealed that the liver tissue sample also displayed infiltrations of chronic inflammatory cells, necrosis, and severe fibrotic lesions, indicating chronic liver injuries (Figure 3a,b).…”

Section: Case Presentationmentioning

confidence: 85%

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Multiple Hepatic Lipoma: A Case Report of Captive Hill Mynah with Iron Storage Disease

Lee,

Youn,

Park

2023

Veterinary Sciences

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The present case describes multiple hepatic lipomas in a common hill mynah (Gracula religiosa). A 21-year-old female captive common hill mynah died without any notable clinical symptoms. An autopsy and histopathological examinations were conducted to determine the exact cause of death. On gross observation, the liver demonstrated a yellowish white surface color and multiple nodules indicating neoplastic lesions. Histopathological assessment found that the nodules purely comprised mature adipocytes. Furthermore, the liver exhibited an excessive accumulation of iron in hepatocytes and Kupffer cells and the infiltration of chronic inflammatory cells, suggesting iron storage disease (ISD). Based on the results, the present case was diagnosed as multiple hepatic lipomas with ISD. To the authors’ best knowledge, multiple hepatic lipomas accompanying ISD lesions have not been reported previously. Hence, the present case is the first case report of hepatic multiple lipomas with ISD in veterinary medicine.

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Section: Case Presentationmentioning

confidence: 85%

“…These results clearly suggested the presence of ISD characterized by the excessive accumulation of iron or ferritin in the liver [17,21]. Considering that ISD can cause chronic lesions, including ischemia and fibrosis to the liver via free-radical generation in cells, it is suggested that ISD-mediated prolonged liver damage might have been the primary cause of death in the bird [21,22]. Following histopathological diagnosis, it was also revealed that the liver tissue sample also displayed infiltrations of chronic inflammatory cells, necrosis, and severe fibrotic lesions, indicating chronic liver injuries (Figure 3a,b).…”

Section: Case Presentationmentioning

confidence: 85%

Multiple Hepatic Lipoma: A Case Report of Captive Hill Mynah with Iron Storage Disease

Lee,

Youn,

Park

2023

Veterinary Sciences

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“…Low levels of tannin, an iron chelator, has also been implicated in the etiology (5,7). However, a recent study demonstrated that iron accumulation is also commonly observed in several free-ranging avian species similarly to what is diagnosed in birds under human care (14).…”

Section: Discussionmentioning

confidence: 99%

Avian mycobacteriosis in a naturally infected captive nocturnal curassow (Nothocrax urumutum)

Silva¹,

Carvalho²,

Oliveira³

et al. 2022

BJVP

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A senile female nocturnal curassow (Nothocrax urumutum) kept under human care was found dead. Grossly, the lungs were congested and had a nodule with 2.0 cm in diameter adhered to the left lung. Histologically, there were multifocal to coalescent areas of necrosis characterized by deposition of amorphous and eosinophilic material with large amount of cellular debris, surrounded by numerous epithelioid macrophages, multinucleated Langhans giant cells, occasional lymphocytes and plasma cells. Ziehl-Neelsen stained sections demonstrated myriad of intralesional alcohol-acid resistant bacilli (BAAR). DNA extracted from lung samples were evaluated by nested polymerase chain reaction resulting in mycobacterial DNA identification. This is the first reported case of mycobacteriosis in a nocturnal curassow.

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Liver and Let Die? A Retrospective Analysis of Secretarybird Mortality in European Zoos

Ings,

Brereton,

Dick

2024

Zoo Biology

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The secretarybird (Sagittarius serpentarius) is a threatened African raptor species, and as such requires conservation attention. While the species is managed under a European Association of Zoos and Aquaria (EAZA) Ex‐situ Programme (EEP), no studies of mortality are currently available. A retrospective mortality project was therefore conducted to identify the most common causes of death in captive secretarybirds, with a view to informing management decisions. Data were collected by requesting the postmortem reports from zoos where secretarybirds had died and combining this with the existing data recorded in the Zoological Information Management System. Overall, 167 birds were recorded as having died within the EEP population, of which post‐mortem information was available for 51 (30.54%) individuals. Trauma was the most common cause of death identified (22 birds, 13.17%), with infection appearing as the second most prevalent cause (15 birds, 8.98%). One incidental finding at postmortem was that many (9) birds showed evidence of liver damage, with reports of bacterial hepatitis, staphylococcal infection, lesions, and dark coloration. Further research into liver complications and diet composition for secretarybirds may therefore have value in reducing mortality. Similarly, investigating strategies to reduce trauma caused by other enclosure occupants or conspecifics may have value in lengthening lifespans for this endangered species.

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A Retrospective Study of Hepatic Hemosiderosis and Iron Storage Disease in Several Captive and Free-Ranging Avian Species

Cited by 4 publications

References 14 publications

Multiple Hepatic Lipoma: A Case Report of Captive Hill Mynah with Iron Storage Disease

Multiple Hepatic Lipoma: A Case Report of Captive Hill Mynah with Iron Storage Disease

Avian mycobacteriosis in a naturally infected captive nocturnal curassow (Nothocrax urumutum)

Liver and Let Die? A Retrospective Analysis of Secretarybird Mortality in European Zoos

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