Amikacin levels in human aqueous humor

Area of Science:

• Ophthalmology
• Pharmacology
• Infectious Diseases

Background:

• Aminoglycoside antibiotics are crucial for treating bacterial infections.
• Amikacin represents a newer generation of aminoglycosides.
• Understanding drug penetration into ocular tissues is vital for effective treatment.

Purpose of the Study:

• To investigate the penetration of amikacin into human aqueous humor following intramuscular administration.
• To compare amikacin's aqueous humor penetration with that of gentamicin and tobramycin.

Main Methods:

• Intramuscular injection of amikacin in human subjects.
• Measurement of amikacin concentration in aqueous humor samples.
• Comparison with existing data on gentamicin and tobramycin aqueous humor permeability.

Main Results:

• Amikacin demonstrated penetration into the human aqueous humor after intramuscular injection.
• No significantly superior penetration of amikacin into aqueous humor was observed compared to gentamicin and tobramycin.
• Amikacin's primary advantage is its efficacy against aminoglycoside-resistant bacteria.

Conclusions:

• Intramuscular amikacin achieves measurable levels in the human aqueous humor.
• Amikacin does not show enhanced ocular penetration compared to older aminoglycosides via this route.
• Amikacin's clinical value is its activity against resistant bacterial strains, not superior intraocular penetration.