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- W4385932987 abstract "Hypothesis Ototoxin cyclodextrin (CDX) will induce a burst in serum prestin when quantified with automated Western blot analysis. Background In the clinical realm, we primarily rely on audiological measures for diagnosis and surveillance of sensorineural hearing loss (SNHL) and have limited therapeutic options. We have proposed a blood-based biomarker approach to overcome this challenge by measuring the outer hair cell’s (OHC) electromotile protein, prestin, in the blood. Previously, we demonstrated a burst in serum prestin after cisplatin exposure using enzyme-linked immunosorbent assayELISA. Methods Guinea pigs were treated with either 3,000 or 4,000 mg/kg CDX, and serum samples were obtained through 3 days after exposure. Serum prestin levels were quantified using automated blot analysis, western and hair cell counts were obtained. Results Both 3,000 and 4,000 mg/kg resulted in robust OHC loss, although more variability was seen at the lower dose. Automated Western blot analysis demonstrated that the prestin profile after CDX exposure is different than baseline. Specifically, a new ~134- kDa band accounted for the prestin burst after ototoxin ablation of OHCs at both doses. Conclusions We reproduced the prestin burst seen after cisplatin administration using CDX. Automated Western blot western analysis revealed that a ~a ~ 134- kDa species of prestin is responsible for the burst. We suggest that the induced band may be a prestin dimer, which could serve as a biomarker for early detection of ototoxicity in the clinical setting. These results add further promise to the potential of serum prestin to serve as an ototoxicity biomarker when using therapeutics with ototoxic properties." @default.
- W4385932987 created "2023-08-18" @default.
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- W4385932987 date "2023-08-08" @default.
- W4385932987 modified "2023-10-09" @default.
- W4385932987 title "Automated Western Blot Analysis of Ototoxin-Induced Prestin Burst in the Blood after Cyclodextrin Exposure" @default.
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- W4385932987 doi "https://doi.org/10.1097/mao.0000000000003994" @default.
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