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Related Experiment Videos

Ampicillin penetration into the rabbit eye

L Salminen

    Acta Ophthalmologica
    |December 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Ampicillin achieved therapeutic levels in vascularized rabbit eye tissues but not the vitreous or lens. Systemic probenecid did not improve ampicillin levels in these poorly penetrated ocular structures.

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    Area of Science:

    • Ophthalmology
    • Pharmacology
    • Microbiology

    Background:

    • Antibiotic penetration into ocular tissues is crucial for treating eye infections.
    • Understanding ampicillin distribution is key for its ophthalmic application.

    Purpose of the Study:

    • To determine the distribution of intravenously administered ampicillin in the rabbit eye.
    • To assess the potential therapeutic efficacy of ampicillin in various ocular compartments.

    Main Methods:

    • Radioactive tracer method was employed to track ampicillin distribution.
    • Intravenous ampicillin (50 mg/kg) was administered to rabbits.
    • Ocular tissues, including cornea, aqueous humor, vitreous body, and lens, were analyzed.

    Main Results:

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    • Therapeutic ampicillin concentrations were achieved in vascularized ocular structures.
    • Cornea and aqueous humor showed intermediate ampicillin levels.
    • Vitreous body and lens exhibited sub-therapeutic ampicillin concentrations.
    • Systemic probenecid did not enhance ampicillin levels in the vitreous or lens.

    Conclusions:

    • Intravenous ampicillin demonstrates limited penetration into the posterior segment (vitreous and lens) of the rabbit eye.
    • Current dosing strategies may be insufficient for treating infections in these avascular ocular regions.
    • Further research is needed to optimize ampicillin delivery to the vitreous and lens.