Toxicidade dos metais níquel e cobre e sua possível atuação como interferentes endócrinos em ambientes aquáticos

Novaes, Glaucia Helena Castro de Freitas; Aureliano, Bianca Cadurim; Moura, Evelise Nunes Fragoso de; Cavalcante, Werbate; Fracácio, Renata

doi:10.5327/z2176-947820180329

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…Histological biomarkers are easy and low‐cost tools for identification compared with other biological variables. In addition, well‐established protocols allow their reproducibility by other researchers, ensuring the relationship between damages and specific contaminants in the aquatic environment (Novaes et al, 2018). Fenthion and pyriproxyfen toxicity were suggested to induce apoptosis in tilapia testicles by caspase activation.…”

Section: Discussionmentioning

confidence: 99%

“…This study demonstrated that pyriproxyfen and fenthion can induce morphological changes in Oreochromis niloticus testicles, which may affect their reproduction in the wild and in captivity. Changes in gonads may hinder their ability to survive and reproduce, affecting the ecosystems at populational or community levels (Novaes et al, 2018). The histopathology information of the gonads associated with these pesticides reiterates the ecological importance of the controlled use of these pesticides close to aquatic environments.…”

Section: Discussionmentioning

confidence: 99%

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Effects of the pyriproxyfen and fenthion on the gonadal morphology of Nile tilapia (Oreochromis niloticus: Perciformes, Cichlidae)

Moises Marques e Silva,

Lins Oliveira,

B. Silva Farias

et al. 2024

Journal of Fish Biology

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Commercially available insecticides present acute toxicity to the health of fish and other aquatic organisms, which may impair the local aquaculture. This study evaluated the gonadal morphology of freshwater fish exposed to pyriproxyfen and fenthion. Forty‐five juvenile male Nile tilapias (Oreochromis niloticus) were divided into control, pyriproxyfen‐exposed (0.01 g/L), and fenthion‐exposed (0.001 g/L) groups. They were evaluated in three moments (30, 60, and 90 days). The variables analyzed were the gonadosomatic index (GSI), weight to length ratio, seminiferous tubules morphometry (diameter and height), tissue damage, and immunohistochemical analysis for caspase‐3, tumor necrosis factor alpha (TNF‐α), and vascular endothelial growth factor (VEGF). Pyriproxyfen and fenthion injured the seminiferous tubule tissue, and the damage progressed according to the exposure time. In addition, the GSI gradually reduced over time in all groups compared with the first moment (30 days), while caspase‐3, TNF‐α, and VEGF values increased only in the fenthion‐exposed group. Therefore, pyriproxyfen and fenthion changed the gonadal morphology of male Oreochromis niloticus, which may affect their reproduction in the wild or captivity.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of the pyriproxyfen and fenthion on the gonadal morphology of Nile tilapia (Oreochromis niloticus: Perciformes, Cichlidae)

Moises Marques e Silva,

Lins Oliveira,

B. Silva Farias

et al. 2024

Journal of Fish Biology

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“…The liver is the organ responsible for some essential functions in the organism, and alterations in this organ may indicate damage related to metabolism, biotransformation, and excretion of certain substances [27,28]. Once liver damage is established, the homeostasis of the organism as a whole can be affected by interfering with some of the organ's basic functions such as the synthesis and biotransformation of molecules [29].…”

Section: Discussionmentioning

confidence: 99%

Libidibia ferrea (jucá), a Traditional Anti-Inflammatory: A Study of Acute Toxicity in Adult and Embryos Zebrafish (Danio rerio)

et al. 2019

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The plant species Libidibia ferrea (Mart. ex Tul.) LP Queiroz var. ferrea basionym of Caesalpinia ferrea (Mart. ex Tul.) is used in various regions of Brazil in folk medicine in the treatment of several health problems, especially in acute and chronic inflammatory processes. Most of the preparations employed are alcoholic. Therefore, this study aimed to evaluate the acute toxicity of the hydroethanolic extract of fruits of Libidibia ferrea (EHEFLf) in zebrafish, emphasizing the possible changes in the organic-cellular level of the gills, liver, kidneys, and intestine and on embryos. The result obtained by LC-M/MS from EHEFLf indicated a high concentration of possible polyhydroxylated substances. EHEFLf, at a dose of 2 g/kg orally, produced non-significant alterations of the analyzed organs. However, for embryos, the treatment with different concentrations demonstrated heart toxicity that was concentration-dependent. There is no evidence of a correlation of the observed effects with the phytochemical composition, and considering the species of animal used, it can be suggested that the oral use of L. ferrea hydroethanolic extract has an acceptable degree of safety for use as an oral medicinal product. and embryo results have shown significant affinity to the heart; however, it is perceived to be related to the concentrations used.

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“…Visto posto, fica evidente que os organismos aquáticos tendem a acumular metais traço em seus tecidos, até mesmo quando a água possui níveis destes compostos abaixo da concentração máxima tolerada pela legislação, não sendo esta, portanto, uma abordagem adequada, ou seja, pautar um ambiente apenas a partir do limite legislado, tendo em vista os efeitos adversos cumulativos que ocorrem ao longo do tempo (NOVAES et al, 2018).…”

Section: Análise Dos Metais Traçounclassified

Clima Urbano E Vegetação: O Papel De Uma Área De Mata Na Formação De Uma Ilha Fria Em Uma Área Urbana

Cruz¹

2022

Meio Ambiente E Sustentabilidade: Formação Interdisciplinar E Conhecimento Científico 2

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Editora Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterála de nenhuma forma ou utilizá-la para fins comerciais.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Toxicidade dos metais níquel e cobre e sua possível atuação como interferentes endócrinos em ambientes aquáticos

Cited by 7 publications

References 23 publications

Effects of the pyriproxyfen and fenthion on the gonadal morphology of Nile tilapia (Oreochromis niloticus: Perciformes, Cichlidae)

Effects of the pyriproxyfen and fenthion on the gonadal morphology of Nile tilapia (Oreochromis niloticus: Perciformes, Cichlidae)

Libidibia ferrea (jucá), a Traditional Anti-Inflammatory: A Study of Acute Toxicity in Adult and Embryos Zebrafish (Danio rerio)

Clima Urbano E Vegetação: O Papel De Uma Área De Mata Na Formação De Uma Ilha Fria Em Uma Área Urbana

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