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Related Experiment Videos

Antibiotic penetration into rabbit nucleus pulposus.

F J Eismont, S W Wiesel, C T Brighton

    Spine
    |April 1, 1987
    PubMed
    Summary

    Clindamycin and tobramycin showed effective penetration into the nucleus pulposus in a rabbit model, reaching therapeutic antibiotic levels. Cephalothin did not penetrate, and oxacillin penetration was inconclusive.

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    Area of Science:

    • Pharmacology
    • Infectious Diseases
    • Orthopedics

    Background:

    • Antibiotic penetration into the nucleus pulposus is crucial for treating disc infections.
    • Understanding antibiotic distribution is vital for optimizing treatment strategies.

    Purpose of the Study:

    • To evaluate the penetration of clindamycin, tobramycin, cephalothin, and oxacillin into the nucleus pulposus.
    • To compare antibiotic concentrations in the nucleus pulposus relative to serum levels.

    Main Methods:

    • A rabbit model was utilized for the study.
    • Intramuscular antibiotic injections were administered over an 8-hour period.
    • Antibiotic levels in the nucleus pulposus and serum were measured.

    Main Results:

    • Clindamycin and tobramycin achieved therapeutic levels in the nucleus pulposus, exceeding 50% of serum concentrations.
    • Cephalothin was undetectable in the nucleus pulposus, with penetration less than 4% of serum levels at 1 hour.
    • Data for oxacillin penetration into the nucleus pulposus were inconclusive.

    Conclusions:

    • Clindamycin and tobramycin demonstrate promising penetration into the nucleus pulposus for potential therapeutic use.
    • Cephalothin exhibits poor penetration, suggesting limited efficacy for nucleus pulposus infections.
    • Further investigation is needed to clarify oxacillin's penetration characteristics.

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