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Related Experiment Videos

[Study on tobramycin concentration in bone marrow (author's transl)]

M Kawashima, T Torisu

    The Japanese Journal of Antibiotics
    |September 1, 1978
    PubMed
    Summary

    Tobramycin (TOB) demonstrates excellent penetration into tibial bone marrow following intramuscular injection. Concentrations remain significant for up to four hours, indicating sustained therapeutic potential.

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    Area of Science:

    • Pharmacokinetics
    • Bone Marrow Penetration
    • Antibiotic Distribution

    Context:

    • Assessing antibiotic efficacy in bone infections requires understanding drug distribution into bone tissue.
    • Intramuscular administration is a common route for antibiotic delivery.
    • Tobramycin is a frequently used aminoglycoside antibiotic for bacterial infections.

    Purpose:

    • To quantify tobramycin (TOB) concentrations in tibial bone marrow at various time points after intramuscular injection.
    • To evaluate the penetration capacity and serum ratio of tobramycin in bone marrow.

    Summary:

    • Tobramycin concentrations in tibial bone marrow were measured 1, 2, 3, and 4 hours post-intramuscular injection (60 mg).
    • Concentrations ranged from 2.8 µg/mL at 1 hour to 0.8 µg/mL at 4 hours.
    • The ratio of bone marrow to serum tobramycin concentration remained high, between 80-94%, indicating excellent penetration.

    Impact:

    • This study confirms tobramycin's excellent penetration into tibial bone marrow.
    • Findings support the use of tobramycin for treating bone infections, particularly osteomyelitis.
    • Provides crucial pharmacokinetic data for optimizing tobramycin dosing regimens in bone infections.

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