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Mechanical Stimulation of Stem Cells Using Cyclic Uniaxial Strain
25:12

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Antibiotics delay in vitro human stem cell regrowth.

Melinda Turani1, Gaspar Banfalvi1, Agota Peter1

  • 1Department of Microbial Biotechnology and Cell Biology, Faculty of Science, University of Debrecen, 4010, Hungary.

Toxicology in Vitro : an International Journal Published in Association with BIBRA
|December 3, 2014
PubMed
Summary

Ophthalmologic antibiotics like chloramphenicol and rifampicin can harm limbal stem cells, slowing regeneration. This study highlights the need for cautious antibiotic use in eye treatments to protect cell structure and function.

Keywords:
Chromatin condensationFluorescent microscopyScratch wound mode lTime-lapse imagingToxicity of antibiotics

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Area of Science:

  • Ophthalmology
  • Cell Biology
  • Toxicology

Background:

  • Human limbal stem cells are crucial for ocular surface regeneration.
  • Antibiotics are widely used in ophthalmology, but their toxic effects on limbal stem cells are not fully understood.
  • Understanding cellular responses to antibiotics is vital for safe ophthalmic treatments.

Purpose of the Study:

  • To establish a human limbal stem cell line for in vitro studies.
  • To investigate the toxic effects of common ophthalmologic antibiotics on cell migration and chromatin structure.
  • To assess the recovery process of limbal stem cells from antibiotic-induced damage.

Main Methods:

  • Establishment of a human limbal stem cell line.
  • In vitro scratch model to mimic cellular damage and recovery.
  • Time-lapse microscopy, scanning electron microscopy, and chromatin image analysis.
  • Treatment with broad-spectrum antibiotics: chloramphenicol and rifampicin at clinical concentrations.

Main Results:

  • Chloramphenicol and rifampicin significantly slowed the regeneration process of limbal stem cells.
  • Antibiotic treatment caused characteristic distortions in the intermediates of chromosome condensation.
  • Limbal cell chromatin condensation pathways were observed to be similar to those in mammalian tumor cells.

Conclusions:

  • Broad-spectrum antibiotics, chloramphenicol and rifampicin, exhibit damaging effects on human limbal stem cells.
  • Ophthalmologic antibiotic treatments should be administered with caution due to potential cellular damage.
  • Further research into the precise mechanisms of antibiotic toxicity on ocular stem cells is warranted.