Abstract:
:Bisphenol A (BPA) is a ubiquitous environmental chemical that has been linked to behavioral differences in children and shown to impact critical neurodevelopmental processes in animal models. Though data is emerging, we still have an incomplete picture of how BPA disrupts neurodevelopment; in particular, how its impacts may vary across different genetic backgrounds. Given the genetic tractability of Drosophila melanogaster, they present a valuable model to address this question. Fruit flies are increasingly being used for assessment of neurotoxicants because of their relatively simple brain structure and variety of measurable behaviors. Here we investigated the neurodevelopmental impacts of BPA across two genetic strains of Drosophila-w1118 (control) and the Fragile X Syndrome (FXS) model-by examining both behavioral and neuronal phenotypes. We show that BPA induces hyperactivity in larvae, increases repetitive grooming behavior in adults, reduces courtship behavior, impairs axon guidance in the mushroom body, and disrupts neural stem cell development in the w1118 genetic strain. Remarkably, for every behavioral and neuronal phenotype examined, the impact of BPA in FXS flies was either insignificant or contrasted with the phenotypes observed in the w1118 strain. This data indicates that the neurodevelopmental impacts of BPA can vary widely depending on genetic background and suggests BPA may elicit a gene-environment interaction with Drosophila fragile X mental retardation 1 (dFmr1)-the ortholog of human FMR1, which causes Fragile X Syndrome and is associated with autism spectrum disorder.
journal_name
Neurotoxicologyjournal_title
Neurotoxicologyauthors
Nguyen U,Tinsley B,Sen Y,Stein J,Palacios Y,Ceballos A,Welch C,Nzenkue K,Penn A,Murphy L,Leodones K,Casiquin J,Ivory I,Ghenta K,Danziger K,Widman E,Newman J,Triplehorn M,Hindi Z,Mulligan Kdoi
10.1016/j.neuro.2020.12.007subject
Has Abstractpub_date
2021-01-01 00:00:00pages
146-157eissn
0161-813Xissn
1872-9711pii
S0161-813X(20)30214-Xjournal_volume
82pub_type
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