Pomegranate extract: a potential protector against aminoglycoside ototoxicity

Area of Science:

• Ototoxicity research
• Pharmacological interventions
• Oxidative stress mechanisms

Background:

• Aminoglycoside antibiotics are crucial for treating bacterial infections but can cause ototoxicity, leading to hearing loss.
• Oxidative stress is a key mechanism contributing to aminoglycoside-induced ototoxicity.
• Developing protective strategies against aminoglycoside ototoxicity is essential for patient safety.

Purpose of the Study:

• To evaluate the protective effects of pomegranate extract against aminoglycoside-induced ototoxicity.
• To investigate the impact of pomegranate extract on oxidative stress markers in the cochlea and kidney.
• To assess changes in otoacoustic emissions as an indicator of cochlear function.

Main Methods:

• A prospective, randomized, controlled experimental study was conducted on Wistar albino rats.
• Rats received either saline, gentamicin, or gentamicin plus pomegranate extract for five days.
• Distortion product otoacoustic emissions were measured, and reactive oxygen species levels were assessed in cochlear and renal tissues.

Main Results:

• Gentamicin treatment significantly increased cochlear reactive oxygen species levels compared to controls.
• Concurrent administration of pomegranate extract with gentamicin reduced cochlear reactive oxygen species levels.
• Pomegranate extract mitigated the negative impact of gentamicin on otoacoustic emissions, indicating preserved cochlear function.

Conclusions:

• Systemic administration of pomegranate extract demonstrates a protective effect against aminoglycoside ototoxicity.
• Pomegranate extract reduces oxidative stress in the cochlea following aminoglycoside exposure.
• These findings suggest pomegranate extract as a potential adjunct therapy to prevent aminoglycoside-induced hearing damage.