| Registro completo |
| Provedor de dados: |
Rev. Bras. entomol.
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| País: |
Brazil
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| Título: |
Cell damage induced by polybrominated diphenyl ethers on Chironomus sancticaroli (Diptera: Chironomidae)
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| Autores: |
Signorini-Souza,Isadora de Lourdes
Palacio-Cortés,Angela Maria
Beltrão-Graboski,Tiago
Richardi,Vinicius Sobrinho
Fávaro,Luis Fernando
Navarro-Silva,Mário Antônio
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| Data: |
2020-01-01
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| Ano: |
2020
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| Palavras-chave: |
Cuénot cells
Flame retardants
Midge
Oenocytes
Salivary glands
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| Resumo: |
Abstract Histological effects of polybrominated diphenyl ethers (PBDEs) were observed in Chironomus sancticaroli larvae which underwent acute exposure. 2,2′,4-triBDE (BDE-17), 2,2′,4,4′-tetraBDE (BDE-47) and 2,2′,4,4′,5-pentaBDE (BDE-99) were evaluated at 0.5, 2.0 and 20 μg L-1. Cytoplasm vacuolisation of oenocytes was observed in the larvae exposed to BDE-17 and BDE-47. Cuénot cells were disrupted at the brush border as an effect of the three evaluated congeners highlighting BDE-47 at 2.0 μg L-1; 60% of larvae displayed this disruption. The midgut showed changes in the morphology of apex cells located next to the lumen of region I exposed to BDE-17 and BDE-47, while BDE-99 induced a narrowing of the lumen diameter. Significant cytoplasm vacuolisation of the larvae exposed to BDE-47 and BDE-99 was observed in region II of the midgut. Salivary glands showed acidophilic granules in the cytoplasm exposed to BDE-17 and BDE-47. The results showed that the tissues of C. sancticaroli were sensitive to flame retardants; these histopathologies can compromise the health and physiology of this organism, highlighting the concern with the presence of PBDEs in freshwater sediments.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100204
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| Editor: |
Sociedade Brasileira De Entomologia
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| Relação: |
10.1590/1806-9665-rbent-2019-50
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Entomologia v.64 n.1 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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