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Clarithromycin synergism with essential and trace elements.

Najma Sultana1, M Saeed Arayne, Rizwana Sabri

  • 1Department of Pharmaceutical Chemistry, Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, University of Karachi, Pakistan.

Pakistan Journal of Pharmaceutical Sciences
|January 18, 2006
PubMed
Summary
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Clarithromycin metal complexes show enhanced antibacterial activity compared to the parent drug. These complexes exhibit a synergistic effect, increasing antimicrobial efficacy and decreasing the minimum inhibitory concentration (MIC).

Area of Science:

  • Medicinal Chemistry
  • Microbiology
  • Pharmacology

Background:

  • Macrolide antibiotics, like clarithromycin, are crucial in treating bacterial infections.
  • Understanding the impact of metal complexation on antibiotic efficacy is vital for developing new therapeutic strategies.

Purpose of the Study:

  • To investigate the synergistic or antagonistic effects of essential and trace element complexation on clarithromycin's antibacterial activity.
  • To compare the antibacterial efficacy of clarithromycin metal complexes with the parent clarithromycin drug.

Main Methods:

  • Synthesized and characterized metal complexes of clarithromycin with magnesium, calcium, chromium, manganese, iron, cobalt, nickel, copper, zinc, and cadmium.
  • Evaluated antibacterial activity using minimum inhibitory concentration (MIC) via serial dilution and zone of inhibition via disk diffusion assays.

Related Experiment Videos

  • Tested against Gram-negative (e.g., E. coli, S. typhii) and Gram-positive (e.g., S. aureus, S. faecalis) bacteria.

    • Main Results:

    • Clarithromycin metal complexes demonstrated a synergistic effect, enhancing antimicrobial activity compared to clarithromycin alone.
    • A significant decrease in the minimum inhibitory concentration (MIC) was observed for the clarithromycin-metal complexes.
    • Increased zones of inhibition indicated improved efficacy against a range of Gram-positive and Gram-negative bacteria.

    Conclusions:

    • Complexation of clarithromycin with various essential and trace elements potentiates its antibacterial activity.
    • Clarithromycin metal complexes represent a promising avenue for developing more effective antibacterial agents.
    • This study highlights the potential of metal complexation to overcome antibiotic resistance and improve therapeutic outcomes.