Abstract：
:To elucidate the multi-generational estrogenic potential of Perfluoroalkyl acids (PFAAs) mixture, vitellogenin (VTG) expression, growth indices, histological alteration, fecundity, hatching rate, larval survival rate, and sex ratio of Japanese medaka (Oryzias latipes) were investigated by exposing the fish to a mixture of perfluorooctane sulfonate (PFOS), perfluroroctanoic acid (PFOA), perfluorobutane sulfonate (PFBS), and perfluorononanoic acid (PFNA) for three generations (238 days). Mixture composition is in the ratio of 1:1:1:1. In addition, whole body burden for each PFAA was analyzed. According to the results, concentrated levels of the PFAAs in both F1 and F2 generation O. latipes were ordered PFOS > PFNA > PFOA > PFBS at both low concentration (0.5 μg/L) and high concentration (5 μg/L), whereas a significant difference in whole body burden based on sex or generation was not detected. Significant induction of VTG expression in F2 and the decline of the gonad somatic index (GSI) in F1 were observed following PFAAs mixture exposure (p < 0.05, one-way ANOVA). Furthermore, suppression level of reproduction rate relative to the control increased as generation was transferred to the next in response to PFAAs mixture or 17 β-estradiol exposure, with the inhibition of hatchability observed in the F1 generation. The PFAA high concentration caused significant alteration of F1 generation sex ratio, suggesting the adverse effect of PFAA in population level (Chi-square test, P > 0.05). Overall, this study demonstrated that PFAA mixture could have the potential of multi-generational endocrine disruptors in O. latipes.
journal_name
Chemospherejournal_title
Chemosphereauthors
Lee JW,Lee JW,Shin YJ,Kim JE,Ryu TK,Ryu J,Lee J,Kim P,Choi K,Park Kdoi
10.1016/j.chemosphere.2016.11.035subject
Has Abstractpub_date
2017-02-01 00:00:00pages
212-223eissn
0045-6535issn
1879-1298pii
S0045-6535(16)31567-3journal_volume
169pub_type
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