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Related Experiment Videos

Surface modifying substances that reduce apparent yeast cell hydrophobicity.

Lisa Colling1, Michael Essmann, Cara Hollmer

  • 1Infectious Disease Research Laboratory, Des Moines University, Des Moines, IA 50312-4198, USA.

Infectious Diseases in Obstetrics and Gynecology
|August 30, 2005
PubMed
Summary

Several topical compounds, including K-Y jelly and heparin, can reduce yeast cell surface hydrophobicity. This finding is crucial for developing therapies that prevent yeast from adhering to human tissues.

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Area of Science:

  • Microbiology
  • Biochemistry
  • Surface Chemistry

Background:

  • Yeast cell surface properties, particularly hydrophobicity, influence adhesion to host tissues.
  • Understanding and modifying yeast surface characteristics is key for developing anti-adhesion strategies.

Purpose of the Study:

  • To investigate the efficacy of various topical compounds in reducing yeast cell surface hydrophobicity.
  • To identify chemical entities capable of inhibiting yeast cell adhesion.

Main Methods:

  • Yeast cell hydrophobicity was assessed by measuring the binding of styrene microspheres.
  • Flow cytometry was employed to quantify microsphere adherence to yeast cells.
  • Yeast cells were pre-incubated with different chemical substances to evaluate their surface modification potential.

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Main Results:

  • Protein-containing media significantly decreased yeast cell surface hydrophobicity.
  • Formulations of K-Y jelly and heparin, along with divalent cations (Ca++, Mg++, Zn++, Cu++), effectively reduced microsphere binding.
  • Chemical extraction removed substances responsible for microsphere binding, and reduced binding correlated with diminished concanavalin A binding.

Conclusions:

  • Commercially available compounds, such as K-Y jelly and heparin, can effectively block yeast cell binding to surfaces.
  • Mannose-containing surface components appear to contribute to yeast cell adhesion.
  • These findings have significant implications for the formulation of therapeutic products aimed at preventing yeast adhesion to tissues.