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- W2017243089 abstract "Disruption of E3 ubiquitin ligase activity in immature zebrafish mind bomb mutants leads to a failure in Notch signaling, excessive numbers of neurons, and depletion of neural progenitor cells. This neurogenic phenotype is associated with defects in neural patterning and brain development. Because developmental brain abnormalities are recognized as an important feature of childhood neurological disorders such as epilepsy and autism, we determined whether zebrafish mutants with grossly abnormal brain structure exhibit spontaneous electrical activity that resembles the long-duration, high-amplitude multispike discharges reported in immature zebrafish exposed to convulsant drugs. Electrophysiological recordings from agar immobilized mind bomb mutants at 3 d postfertilization confirmed the occurrence of electrographic seizure activity; seizure-like behaviors were also noted during locomotion video tracking of freely behaving mutants. To identify genes differentially expressed in the mind bomb mutant and provide insight into molecular pathways that may mediate these epileptic phenotypes, a transcriptome analysis was performed using microarray. Interesting candidate genes were further analyzed using conventional reverse transcriptase-PCR and real-time quantitative PCR, as well as whole-mount in situ hybridization. Approximately 150 genes, some implicated in development, transcription, cell metabolism, and signal transduction, are differentially regulated, including downregulation of several genes necessary for GABA-mediated signaling. These findings identify a collection of gene transcripts that may be responsible for the abnormal electrical discharge and epileptic activities observed in a mind bomb zebrafish mutant. This work may have important implications for neurological and neurodevelopmental disorders associated with mutations in ubiquitin ligase activity." @default.
- W2017243089 created "2016-06-24" @default.
- W2017243089 creator A5000296959 @default.
- W2017243089 creator A5024724859 @default.
- W2017243089 creator A5074155938 @default.
- W2017243089 date "2010-10-13" @default.
- W2017243089 modified "2023-10-13" @default.
- W2017243089 title "Spontaneous Seizures and Altered Gene Expression in GABA Signaling Pathways in a<i>mind bomb</i>Mutant Zebrafish" @default.
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- W2017243089 doi "https://doi.org/10.1523/jneurosci.1887-10.2010" @default.
- W2017243089 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2962868" @default.
- W2017243089 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20943912" @default.