4.7 Article

Environmentally relevant concentrations of benzophenone-3 induce differential histopathological responses in gills and liver of freshwater fish

Journal

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 33, Pages 44890-44901

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-021-13839-0

Keywords

Biomarkers; Ecotoxicology; UV filter; Histopathology; Oxybenzone; Poecilia reticulata; Guppy

Funding

  1. State University of Goias (UEG) in Brazil [201600020010791]
  2. Fundacao de Amparo a Pesquisa do Estado de Goias (FAPEG) in Brazil [PPP/201610267001019]
  3. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) in Brazil [421759/2018-6]
  4. FAPEG
  5. UEG
  6. PROBIP program (Scientific Production Support Program)

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The study revealed that acute exposure to environmentally relevant concentrations of BP-3 had a stronger impact on the gills than on the liver of Poecilia reticulata. Different concentrations of BP-3 were associated with distinct histopathological changes in the gills and liver.
BP-3 is one of the most used organic UV filters. However, its widespread use and release into aquatic environment can induce ecotoxicological impact on aquatic organisms. Thus, the aim of the current study is to evaluate the gills and liver of freshwater fish Poecilia reticulata subjected to acute exposure (96 h) to BP-3 at environmentally relevant concentrations (10-1000 ng L-1). The study was based on adopting qualitative and semi-quantitative approach to assess histopathological changes and integrated the biomarker response in order to investigate organ-specific responses to BP-3 exposure. BP-3 has induced high histopathological index associated with circulatory disturbances, as well as with regressive and immunological changes in gills, whereas the hepatic histopathological index was associated with circulatory disturbances. Moreover, lower BP-3 concentrations were mostly associated with changes in gills, whereas higher BP-3 concentration was mostly linked to hepatic changes. In conclusion, acute exposure to BP-3 at environmentally relevant concentrations had stronger impact on gills than on the liver of P. reticulata, which confirmed organ-specific responses to UV filters.

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