Tetrandrine Prevents Neomycin-Induced Ototoxicity by Promoting Steroid Biosynthesis

Area of Science:

• Pharmacology
• Ototoxicity Research
• Drug Discovery

Background:

• Aminoglycoside antibiotics are crucial for treating severe infections but cause irreversible ototoxicity.
• Current treatments lack effective strategies to prevent or mitigate aminoglycoside-induced ototoxicity.

Purpose of the Study:

• To investigate the protective effects of tetrandrine (TET) against neomycin-induced ototoxicity.
• To elucidate the underlying mechanisms of TET's protective action.

Main Methods:

• In vitro and in vivo experiments using neomycin-induced ototoxicity models.
• Assessment of auditory function and cochlear hair cell damage.
• Analysis of oxidative stress, apoptosis, and gene expression (RNA-seq).

Main Results:

• TET administration significantly improved auditory function and reduced hair cell injury.
• TET decreased oxidative stress and apoptosis in cochlear hair cells.
• RNA-seq analysis indicated TET promotes steroid biosynthesis, a potential protective pathway.

Conclusions:

• Tetrandrine shows promise as a therapeutic agent to prevent aminoglycoside-induced ototoxicity.
• TET's protective effects may be mediated by promoting steroid biosynthesis and reducing cellular stress and apoptosis.