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1995•Journal of Antimicrobial ChemotherapyRequires access

The effects of low concentrations of antibiotics on epithelial damage caused by non-typable Haemophilus influenzae and bacterial morphology

Kenneth W. Tsang, Andrew Rutman, Kanthiah Kanthakumar, A. Palmer, Danielle Roberts, Glenn Tillotson, P J Cole, Robert Wilson

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Abstract

Sterile culture filtrates from non-typable Haemophilus influenzae (NTHi) grown in medium containing no antibiotics or 0.25 MIC of amoxycillin, ciprofloxacin or loracarbef were examined for their effect on the ciliary beat frequency (CBF) and structure of human respiratory epithelium. CBF slowing was significantly (P < 0.05) less with 0.25 MIC of all three antibiotics. The epithelium was significantly (P < 0.05) less disrupted with ciprofloxacin. The morphology of NTHi infecting human adenoid organ cultures after 24 h with or without 0.25 MIC of the same antibiotics was measured by scanning electron microscopy. Only ciprofloxacin caused a significant (P < 0.05) change in morphology.

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What this paper is about

Sterile culture filtrates from non-typable Haemophilus influenzae (NTHi) grown in medium containing no antibiotics or 0.25 MIC of amoxycillin, ciprofloxacin or loracarbef were examined for their effect on the ciliary beat frequency (CBF) and structure of human respiratory epithelium. CBF slowing was significantly (P < 0.05) less with 0.25 MIC of all three antibiotics. The epithelium was significantly (P < 0.05) less disrupted with ciprofloxacin. The morphology of NTHi infecting human adenoid organ cultures after 24 h with or without 0.25 MIC of the same antibiotics was measured by scanning electron microscopy. Only ciprofloxacin caused a significant (P < 0.05) change in morphology.

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Available abstract

Sterile culture filtrates from non-typable Haemophilus influenzae (NTHi) grown in medium containing no antibiotics or 0.25 MIC of amoxycillin, ciprofloxacin or loracarbef were examined for their effect on the ciliary beat frequency (CBF) and structure of human respiratory epithelium. CBF slowing was significantly (P < 0.05) less with 0.25 MIC of all three antibiotics. The epithelium was significantly (P < 0.05) less disrupted with ciprofloxacin. The morphology of NTHi infecting human adenoid organ cultures after 24 h with or without 0.25 MIC of the same antibiotics was measured by scanning electron microscopy. Only ciprofloxacin caused a significant (P < 0.05) change in morphology.

Key concepts: Haemophilus influenzae, Ciprofloxacin, Microbiology, Antibiotics, Haemophilus, Biology, Pasteurellaceae, Antibacterial agent

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The effects of low concentrations of antibiotics on epithelial damage caused by non-typable Haemophilus influenzae and bacterial morphology — Research Paper | ScholarLens