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• W2038948091 endingPage "e52701" @default.
• W2038948091 startingPage "e52701" @default.
• W2038948091 abstract "The use of cocaine during pregnancy can affect the mother and indirectly might alter the development of the embryo/foetus. Accordingly, in the present work our aim was to study in vivo (in zebrafish embryos) the effects of cocaine on the expression of dopamine receptors and on miR-133b. These embryos were exposed to cocaine hydrochloride (HCl) at 5 hours post-fertilization (hpf) and were then collected at 8, 16, 24, 48 and 72 hpf to study the expression of dopamine receptors, drd1, drd2a, drd2b and drd3, by quantitative real time PCR (qPCR) and in situ hybridization (ISH, only at 24 hpf). Our results indicate that cocaine alters the expression of the genes studied, depending on the stage of the developing embryo and the type of dopamine receptor. We found that cocaine reduced the expression of miR-133b at 24 and 48 hpf in the central nervous system (CNS) and at the periphery by qPCR and also that the spatial distribution of miR-133b was mainly seen in somites, a finding that suggests the involvement of miR-133b in the development of the skeletal muscle. In contrast, at the level of the CNS miR-133b had a weak and moderate expression at 24 and 48 hpf. We also analysed the interaction of miR-133b with the Pitx3 and Pitx3 target genes drd2a and drd2b, tyrosine hydroxylase (th) and dopamine transporter (dat) by microinjection of the Pitx3-3'UTR sequence. Microinjection of Pitx3-3'UTR affected the expression of pitx3, drd2a, drd2b, th and dat. In conclusion, in the present work we describe a possible mechanism to account for cocaine activity by controlling miR-133b transcription in zebrafish. Via miR-133b cocaine would modulate the expression of pitx3 and subsequently of dopamine receptors, dat and th. These results indicate that miRNAs can play an important role during embryogenesis and in drug addiction." @default.
• W2038948091 created "2016-06-24" @default.
• W2038948091 creator A5005324239 @default.
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• W2038948091 date "2012-12-21" @default.
• W2038948091 modified "2023-10-03" @default.
• W2038948091 title "Modulation by Cocaine of Dopamine Receptors through miRNA-133b in Zebrafish Embryos" @default.
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• W2038948091 doi "https://doi.org/10.1371/journal.pone.0052701" @default.
• W2038948091 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3528707" @default.
• W2038948091 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23285158" @default.
• W2038948091 hasPublicationYear "2012" @default.
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