Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

The complexation of steroid hormones into cyclodextrin alters the toxic effects on the biological parameters of zebrafish (Danio rerio)

2018; Elsevier BV; Volume: 214; Linguagem: Inglês

10.1016/j.chemosphere.2018.09.116

1879-1298

Marília Cordeiro Galvão da Silva, Jadson Freitas da Silva, Thamiris Pinheiro Santos, Niely Priscila Correia da Silva, Amanda Rodrigues dos Santos Magnabosco, André Lucas Corrêa de Andrade, Elton Hugo Lima da Silva Souza, Marília Ribeiro Sales Cadena, Fabrício Bezerra de Sá, Valdemiro Amaro da Silva, Pabyton Gonçalves Cadena,

Hormonal and reproductive studies

The objective of this study was to evaluate the toxic effects of progesterone (P4F) and estradiol (E2F) and the effect of these steroid hormones complexed into cyclodextrins, commercially available drugs, such as micronized progesterone (P4M) and transdermal estradiol (E2T), and evaluate them as endocrine disruptors through biological parameters of Danio rerio. An acute toxicity test was performed with hormones using D. rerio embryos according to OECD 236 guidelines. The heart rate, mortality, and teratogenic effects were evaluated. In addition, a chronic toxicity test was assayed with adult animals for evaluation of animal behavior, reproductive capacity, and electrophysiological responses of the retina. Analysis of the results of the acute toxicity test with embryos exposed to progestins and estrogens showed that free hormones caused a higher percentage of teratogenic effects such as pericardial edema, yolk sac edema, and spinal deformation. Behavioral evaluation (30-60 days) of adult animals exposed to P4M, E2F, and E2T demonstrated higher frequencies of aggressive behaviors such as Chase away, Persecution, Escape, and Attack. Analysis of reproductive capacity did not show significant differences in the number of viable eggs, and no significant changes were observed in the electrophysiological responses of the retina. According to these results, there is a higher toxicity effect of hormones in the free form when compared to the commercial forms and inclusion complexes. This indicates that complexation into cyclodextrin reduced the toxicity of the hormones according to the parameters studied.