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Gentamicin may have an adverse effect on osteogenesis

Shuji Isefuku1, Clive J Joyner, A Hamish R W Simpson

  • 1Nuffield Department of Orthopaedic Surgery, University of Oxford, Headington, England, United Kingdom.

Journal of Orthopaedic Trauma
|March 7, 2003
PubMed
Abstract

Insights

High concentrations of gentamicin used in bone infection treatment can harm osteoblast cells. This study shows gentamicin inhibits cell proliferation, potentially impairing bone healing.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Orthopedics

Background:

  • Gentamicin is commonly used for bone infections.
  • Local administration can achieve high drug concentrations.
  • Potential toxicity to bone cells is a concern.

Purpose of the Study:

  • To investigate the toxic effects of high gentamicin concentrations on human osteoblastlike cells.
  • To assess the impact of gentamicin on cell proliferation and viability in vitro.

Main Methods:

  • Human osteoblastlike cells were cultured.
  • Cells were exposed to varying gentamicin concentrations (0-1000 microg/mL) for 4 days.
  • Alkaline phosphatase activity, DNA content, and thymidine incorporation were measured.

Main Results:

  • Gentamicin significantly decreased alkaline phosphatase activity starting at 100 microg/mL.
  • Cell proliferation (thymidine incorporation) was reduced at concentrations of 100 microg/mL and above.
  • Total DNA content decreased significantly at 700 microg/mL and higher.

Conclusions:

  • High gentamicin concentrations inhibit osteoblast proliferation in vitro.
  • Topical gentamicin may negatively affect bone repair processes in vivo.
  • Further research is needed to optimize gentamicin use in bone infections.

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