A polymorphism in human estrogen-related receptor beta (ESRRβ) predicts audiometric temporary threshold shift

Area of Science:

• Genetics
• Audiology
• Molecular Biology

Background:

• A previous study suggested a link between the ESRRβ rs61742642 polymorphism and noise-induced hearing loss (NIHL).
• The estrogen-related receptor beta (ESRRβ) plays a role in cellular processes that could influence hearing sensitivity.

Purpose of the Study:

• To investigate the specific effect of the ESRRβ rs61742642 T variant on temporary threshold shift (TTS).
• To determine if this genetic variant influences susceptibility to short-term hearing changes from noise exposure.

Main Methods:

• Recruited participants with CT (n=19) and CC (n=40) genotypes for the rs61742642 polymorphism.
• Induced TTS using 10-minute exposure to narrow-band noise at 2000 Hz.
• Measured hearing thresholds and distortion product otoacoustic emissions (DPOAEs) before and after noise exposure.

Main Results:

• Participants with the CT genotype exhibited significantly greater TTS compared to those with the CC genotype.
• No clear evidence of a greater temporary level shift in DPOAEs was observed between genotypes.
• The ESRRβ rs61742642 polymorphism is associated with TTS, indicating a potential genetic predisposition to hearing changes.

Conclusions:

• The ESRRβ rs61742642 polymorphism is associated with temporary threshold shift (TTS).
• Further research into the molecular mechanisms underlying this association is warranted.
• This finding contributes to understanding the genetic factors influencing susceptibility to noise-induced hearing loss (NIHL).