img
Are BPA-free plastics safe for aquatic life? - Fluorene-9-bisphenol induced thyroid-disrupting effects and histopathological alterations in adult zebrafish (Danio rerio)      
Yazarlar
Doç. Dr. Selin ÖZKAN KOTİLOĞLU
Türkiye
Pınar Arslan
Türkiye
Gülçin Akca
Türkiye
Aysel Çağlan Günal
Türkiye
Özet
Fluorene-9-bisphenol (BPFL) is used as an alternative compound for bisphenol A, an endocrine disruptor compound which is present in various materials including plastic bottles and packaging. Although it is used extensively in products that are labelled BPA-free, its effect on wildlife and humans have not been fully studied. Therefore, this study aimed to investigate the effects of BPFL in adult zebrafish. In the preliminary experiments of the study, the median lethal concentration value (LC50) of BPFL was 0.25 mg/L (95 % confidence interval 0.15-0.41) for 96 h. Following exposure to three different sublethal concentrations of BPFL after 96 h and 15 days, T4 hormone levels, expression levels of genes involved in thyroid metabolism and histopathological alterations were assessed. T4 hormone levels were found to be significantly higher in females at the lowest BPFL concentration following 96 h exposure (P < 0.05). Expression levels of trh, tshba and trhrb genes were upregulated following 96 h exposure at 0.025 mg/L concentration and crh was upregulated following 15 days exposure at 0.025 mg/L concentration in female zebrafish (P < 0.05). The most prominent histopathological findings in zebrafish exposed to 0.025 and 0.125 mg/L of BPFL were observed in the gill, liver, kidney and testis tissues. The gill tissues showed some hyperemia, lamellar fusion, hyperplasia, epithelial lifting, and telangiectasis, while passive hyperemia, hydropic degeneration, and necrosis were observed in the liver tissues. The BPFL is highly toxic to zebrafish even in sublethal concentrations according to the molecular and histopathological responses.
Anahtar Kelimeler
Fluorene-9-bisphenol, BPFL, Zebrafish, Gene expression, Thyroid hormone, Histopathology
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Comparative Biochemistry and Physiology Part C: Toxicology &amp; Pharmacology
Dergi ISSN 1532-0456
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili Türkçe
Basım Tarihi 07-2022
Cilt No 260
Sayfalar 109419 /
Doi Numarası 10.1016/j.cbpc.2022.109419
Makale Linki http://dx.doi.org/10.1016/j.cbpc.2022.109419