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[Intraocular penetration of netilmicin]
Wiener Klinische Wochenschrift
|April 15, 1983
Summary
Netilmicin, a semisynthetic aminoglycoside antibiotic, effectively penetrates human aqueous humor. It demonstrates efficacy against gentamicin-resistant bacteria, suggesting its potential in treating bacterial endophthalmitis.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Pharmacology
Background:
- Bacterial endophthalmitis poses a significant threat to vision.
- Aminoglycoside antibiotics are crucial in treating ocular infections.
- Netilmicin is a semisynthetic aminoglycoside with a broad antibacterial spectrum.
Purpose of the Study:
- To determine the penetration of netilmicin into human aqueous humor.
- To evaluate the efficacy of netilmicin against common bacterial pathogens.
- To assess the potential role of netilmicin in managing ocular infections.
Main Methods:
- Measurement of netilmicin concentration in human aqueous humor.
- Determination of minimum inhibitory concentrations (MICs) for various bacterial strains.
- Intramuscular injection of netilmicin at 5 mg/kg body weight in a preclinical model.
Main Results:
- Netilmicin achieved adequate concentrations in the aqueous humor.
- Efficacy extended to gentamicin-resistant bacterial strains, including Staphylococcus aureus, Escherichia coli, Klebsiella, Enterobacter, Citrobacter, and Proteus morganii.
- Achieved aqueous humor levels exceeded MICs for tested pathogens.
Conclusions:
- Netilmicin demonstrates promising penetration and efficacy for treating bacterial endophthalmitis.
- Combined therapy with beta-lactam antibiotics may enhance netilmicin's synergistic effect.
- Perioperative prophylaxis with newer aminoglycosides is not recommended due to resistance development risks.