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- W2024405106 abstract "Cisplatin damages cochlear hair cells and spiral ganglion neurons through cell death signaling pathways that are not fully understood. We used focused apoptosis gene microarrays to study early changes in gene expression in cochlear cultures from P3 neonatal rats treated with cisplatin (0.2 mM). After 12 hours of cisplatin treatment, more than 50% of the 96 genes on the array showed a significant decrease in expression, consistent with widespread cell death. However, after 3 hours of cisplatin treatment, 10 genes showed significant increase in expression in total cochlear tissue. In experiments with subsets of cochlear tissues, at 3h, cisplatin induced increased expression of 12 genes in the cochlear sensory epithelium (basilar membrane) and 11 genes in the spiral ganglion (tissue of Rosenthal’s canal, containing the spiral ganglion). These included pro– and anti–apoptotic genes involved in the p53 signaling pathway, TNF receptor family, NF–kappaB pathway, death domain family, death effector domain family, Bcl–2 family, CARD family, TRAF family, and GTP signal transduction. Although the changes in gene expression showed an overlap between basilar membrane and spiral ganglion, other changes, which may reflect the unique response of each tissue, were also observed. Pifithrin–a blocked cisplatin–induced up–regulation of genes in the p53 signaling pathway when assayed by both superarray and real time PCR. The data add to our understanding of the involvement of p53 in cisplatin–induced ototoxicity and otoprotection, conferred by the p53 inhibitor Pifithrin–a." @default.
- W2024405106 created "2016-06-24" @default.
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- W2024405106 date "2009-12-01" @default.
- W2024405106 modified "2023-10-16" @default.
- W2024405106 title "Gene expression in cisplatin ototoxicity and protection with p53 inhibitor" @default.
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- W2024405106 doi "https://doi.org/10.1016/s1672-2930(09)50016-5" @default.
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