MassIVE MSV000086568

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Recurring exposure to low humidity induces transcriptional and protein level changes in the vocal folds of rabbits

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Description

Voice disorders are an important human health condition. Hydration is a commonly recommended preventive measure for voice disorders though it is unclear how vocal fold dehydration, is harmful at the cellular level. Airway surface dehydration can result from exposure to low humidity air. Here we have used a recurring 8-hour low humidity exposure over 15 days to mimic an occupational exposure to a low humidity environment. Exposure to moderate humidity was the control condition. Full thickness soft-tissue samples, including the vocal folds and surrounding laryngeal tissue, were collected for molecular analysis. RT-qPCR demonstrated a significant upregulation of MUC4 (mucin 4) and SCL26A9 (chloride channel) and a large fold-change though statistically non-significant upregulation of SCNNA1 (epithelial sodium channel). Proteomic analysis demonstrated differential regulation of proteins clustering into prospective functional groups of muscle structure and function, oxidative stress response, and the protein chaperonin stress response. Together, the data demonstrate that recurring exposure to low humidity is sufficient to induce both transcriptional and translational level changes in laryngeal tissue and suggest that low humidity exposure induces cellular stress at the level of the vocal folds. [doi:10.25345/C54R3G] [dataset license: CC0 1.0 Universal (CC0 1.0)]

Keywords: Rabbit, larynx, vocal fold biology

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Principal Investigators:
(in alphabetical order) 		Abigail Cox, Purdue University, United States
Submitting User: uma_aryal
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