ArticleActa otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale2024
Up-regulation of HIF-1α in refractory sudden sensorineural hearing loss.
Article in Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- [Prospective randomised controlled observation of tympanic chamber injection of gangliosides in the treatment of refractory sudden deafness].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2025Trial
- Efficacy of multimodal therapy for sudden sensorineural hearing loss: a propensity score-matched analysis of 1632 patients.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026Article
- Network-Based Identification ofCurrent pharmaceutical design · 2026Article
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7 authors.
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Abstract
Objectives: To investigate the expression of hypoxia-inducible factor-1α (HIF-1α) in patients with refractory sudden sensorineural hearing loss (SSNHL). Material and methods: Thirty patients with refractory SSNHL were treated with intratympanic methylprednisolone perfusion (IMP) for 10 days. Expression of HIF-1α and histone deacetylase 2 (HDAC2) was evaluated in peripheral blood mononuclear cells (PBMCs) and Results: Significant hearing improvement (≥ 15 dB) was observed in 16 patients [IMP glucocorticoid sensitive (GCS) group], while 14 patients had no therapeautic hearing recovery [IMP GC resistance (GCR) group]. The expression of HDAC2 decreased and HIF-1a increased in all refractory SSNHL patients before IMP. The expression of HDAC2 and HIF-1α after IMP was significantly changed in the GCS group, but not in the GCR group. The same expression profile was also observed in House Ear Institute-organ of Corti-1 (HEI-OC1) cells exposed to oxidative stress (OS). The results of gene manipulation experiments indicate that HIF-1α up-regulation significantly reduced HDAC2 expression in HEI-OC1 cells, especially under conditions of OS. Conclusions: This study suggests that HIF-1α activation inhibits HDAC2 expression, causing glucocorticoid resistance in refractory SSNHL. HIF-1α might serve as a potential biomarker to predict prognosis of refractory SSNHL.
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