Anthracosis in the lungs and associated lymph nodes in sheep and its potential role in the occurrence of pneumonia

Beytut, Enver

doi:10.1016/s0921-4488(02)00175-x

Cited by 4 publications

(8 citation statements)

References 16 publications

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“…The dust particles in the present study did not resemble silicosis, which is characterized by plate-like crystals [10,14,21]. From a histological point of view, the dust accumulation observed in the lung and air sacs in this study were consistent with the appearance of coal particle depositions previously reported [13,[17][18][19].…”

Section: Discussionsupporting

confidence: 88%

“…The severity of the lesions depends on the type of inhaled dust and the intensity and period of exposure. Based on the histopathological changes in the lungs, pneumoconiosis has been subdivided as fi brotic or non-fi brotic [13,18,19,23]. Pneumoconiosis in birds has been reported as rare cases, but no information is available about dust accumulation in the air sacs of avian due to naturally exposure.…”

Section: Discussionmentioning

confidence: 99%

“…Some researchers reported that there may be a relationship between pneumococciosis and some lung diseases such as pneumonia in sheep [18], cattle [19], camel [23], and neoplasia in dogs [17]. Furthermore, Binder et al [12] reported that severe pulmonary aspergillosis was seen in humans who have underlying lung diseases such as pneumoconiosis, chronic obstructive lung disease, a history of tuberculosis and long-term steroid treatment.…”

Section: Discussionmentioning

confidence: 99%

“…Pneumoconiosis is also called occupational lung disease or coal workers' pneumoconiosis, is more common in humans than animals, because people work in a high risk mineral associated industry [12][13][14][15][16]. However, reports of pneumoconiosis have been described in domestic and wild mammals [17][18][19]. Pneumoconiosis has been reported in avian species such as kiwi, rhea, ostrich, touraco, swan, owl, crane, duck, eagle, pheasant in San Diago Zoo and Dhaka Zoological Park, and in hens [9,10,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Concurrent Occurrence of Lower Respiratory Aspergillosis and Pneumoconiosis in a Turkey Flock

et al. 2017

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This study describes a concurrent occurrence of lower respiratory aspergillosis and pneumoconiosis in a turkey fl ock. From one fl ock of 1000 turkeys, 4 clinically affected turkeys were examined pathologically and microbiologically. Clinically affected turkeys showed anorexia, lethargy, drooping of the wing, vomiting, dyspnea and open-beak breathing, or sudden dead. Gross lesions were observed in the air sacs and lungs which presented white to yellowish granulomas of varying size. Microscopic there was multifocal granulomatous airsacculitis and pneumonia. At the center of the granulomas, fungal hyphae were clearly highlighted in the lungs and air sacs by Gomori methenamie silver (GMS) staining. In the microbiological cultivation of the affected lungs and air sacs, Aspergillus fumigatus was isolated on Sabouraud dextrose agar. Furthermore, dark black dust accumulations were present in the cytoplasm of macrophages or interstitial tissue in the lungs and air sacs. There were also fi brosis and lymphohistiocytic cell infi ltrations around the particles. Overall, this study could implicated that pneumoconiosis might be a predisposing factor in the development of respiratory aspergillosis in turkeys.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Concurrent Occurrence of Lower Respiratory Aspergillosis and Pneumoconiosis in a Turkey Flock

et al. 2017

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“…Beytut [24] studied gross and histopathological findings of anthracosis in lungs and local lymph nodes of sheep and its potential role in the occurrence of pneumonia in Turkey. Anthracosis was diagnosed in the lungs and regional lymph nodes of 45 (2.25%) out of 2000 sheep.…”

Section: Goodarzi Azizi Koupaei Moshkelanimentioning

confidence: 99%

Tek Hörgüçlü Develerde (Camelus dromedarius) Anrako-silikozisin Akciğerlerdeki Patolojik Bulguları ve Pömoni Oluşumundaki Rolü

Goodarzi¹,

Azizi²,

Koupaei³

et al. 2014

Kafkas Univ Vet Fak Derg

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Pneumoconiosis is an occupational lung disease which occurs by the accumulation of inhaled organic and inorganic particles in the pulmonary parenchyma. These particles interfere with the defense mechanisms of the lungs. This study was designed to describe the gross and histopathological features of pneumoconiosis in the lungs and its relation with occurrence of pneumonia in camels. 150 pneumonic and 100 healthy lungs were examined for pneumoconiosis in pathologic level. Macroscopic lesions of pneumoconiotic lungs were related to pneumonia and no remarkable features of pneumoconiosis were observed in the examined tissues. Pneumoconiosis was diagnosed in 43 out of 150 lungs with pneumonic lesions. Grossly healthy lungs did not show pneumoconiosis. Out of 43 pneumoconiotic lungs, 93% (n=40/43) were associated with interstitial pneumonia. Also, pneumoconiosis occurred in 2.32% (n=1/43) and 4.65% (n=2/43) of lungs with suppurative bronchopneumonia and bronchointerstitial pneumonia, respectively. Histopathologic findings related to pneumoconiosis were characterized by varying degrees of diffuse to nodular fibrosis as well as mild to heavy accumulations of mixed carbon and silicon dusts. Interlobular and interalveolar septa of alveoli were thickened by fibrosis and infiltration of mononuclear inflammatory cells. Crystalline silicon particles were in different shapes including filamentous, oblong and polygonal. Anthraco-silicosis particles were observed inside and outside of macrophages more adjacent to the vessels and bronchioles as well as lymphocytes infiltration. The color of particle aggregations was different from scant gray to brown or dense black, depending on the amount of silicon or carbon dust deposition. In the lungs, areas with prominent deposition of crystalline silica rather than carbon were gray to light brown and focal interstitial fibrosis was occurred. The present study suggests a positive causal relationship between pneumoconiosis and pneumonia. It seems these particles predispose animals to pulmonary diseases especially various type of pneumonia. Keywords: Pneumoconiosis, Pathology, Silicosis, Anthracosis, Camel Tek Hörgüçlü Develerde (Camelus dromedarius) Anrako-silikozisin Akciğerlerdeki Patolojik Bulguları ve Pömoni Oluşumundaki Rolü ÖzetPnömokoniozis pulmoner parankimde solunan organik ve inorganik partiküllerin birikmesi ile oluşan bir akciğer hastalığıdır. Bu partiküller akciğerlerin savunma mekanizmalarını bozarlar. Bu çalışma develerde pnömokoniozisin makroskopik ve histopatolojik özelliklerini tanımlamak ve pnömoni oluşumu ile ilişkisini ortaya koymak maksadıyla yapılmıştır. Çalışmada 150 pnömonili ve 100 sağlıklı akciğer pnömokoniozis yönünden incelendi. Pnömokoniotik akciğerlerdeki makroskopik lezyonlar pnömoni ile ilişkilendirildi ve incelenen dokularda pnömokoniozisin belirgin hiçbir özelliği gözlemlenmedi. Pnömoni lezyonlu 150 akciğerden 43'ünde pnömokoniozis tespit edildi. Makroskopik olarak sağlıklı akciğerlerde pnömokoniozis gözlemlenmedi. 43 adet pnömokonitik akciğerin %93'ü (n=40/...

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A pilot study on the pulmonary anthracosis in stray dogs of Kathmandu Valley, Nepal: A potential public health threat for future

Thapa,

Bhatta,

Puri

et al. 2024

Vet World

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Background and Aim: Kathmandu is a densely populated metropolitan city in Nepal. In recent years, however, the metropolis has been ranked as one of the most polluted cities worldwide. Both humans and animals are susceptible to various respiratory diseases due to chronic exposure to polluted air. Due to the relative similarities in the anatomical structure and physiological functions of the respiratory system between humans and dogs, polluted environments may lead to respiratory illness in similar ways in both species living in the valley. On the basis of information on the air quality in the valley, this study was conceived to assess pulmonary illness in street dogs to discern the health hazards caused by polluted air. Materials and Methods: A total of 76 dogs with clinical signs of tachypnea, dyspnea, sneezing, coughing, mucopurulent discharge, moderate hyperthermia, and anorexia admitted from July 2020 to November 2020 in Animal Nepal for treatment were included in this study. Among them, 24 animals responded to treatment, and 52 dogs died during their stay in the hospital. The 52 dead animals were necropsied, and the lesions that resembled pulmonary anthracosis were further studied grossly and histologically in a blinded fashion by trained veterinary pathologists. Results: Significant morphological alterations were observed in the lungs and associated lymph nodes of 25 animals, indicating pulmonary anthracosis. Gross morphological changes included multiple black foci with hemorrhage, congestion, nodular, and emphysema on the parietal and visceral surfaces of the lungs. The alveolar septa and visceral pleura exhibited deposition of black particles. Congestion, emphysema, and inflammatory exudates were also detected in the lung tissues and lymph nodes. Conclusion: The clinical, gross, and microscopic findings accurately resembled those of pulmonary anthracosis. This life-threatening condition in stray canines may be caused by a critical level of air pollution from different sources and carbon emissions from vehicles. To protect animals and humans living in the Kathmandu Valley, concerned government and non-government agencies should work toward reducing air pollution levels as soon as possible. Keywords: air pollution, histopathology, Kathmandu, pulmonary anthracosis, respiratory disease, stray dogs.

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Anthracosis in the lungs and associated lymph nodes in sheep and its potential role in the occurrence of pneumonia

Cited by 4 publications

References 16 publications

Concurrent Occurrence of Lower Respiratory Aspergillosis and Pneumoconiosis in a Turkey Flock

Concurrent Occurrence of Lower Respiratory Aspergillosis and Pneumoconiosis in a Turkey Flock

Tek Hörgüçlü Develerde (Camelus dromedarius) Anrako-silikozisin Akciğerlerdeki Patolojik Bulguları ve Pömoni Oluşumundaki Rolü

A pilot study on the pulmonary anthracosis in stray dogs of Kathmandu Valley, Nepal: A potential public health threat for future

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