Extracellular enzymes and adhesive properties of medically important Candida spp. strains from landfill leachate

• Published in: Microbial pathogenesis 2018-03, Vol.116, p.328-334
• Main Authors: Amani, Dahmani, Emira, Noumi, Ismail, Trabelsi, Jamel, Eddouzi, Dominique, Sanglard, Rosa, Del Campo, Mejdi, Snoussi
• Format: Article
• Language: English
• Subjects: Adhesive properties; Candida; Landfill leachate; Virulence factors
• ISSN: 0882-4010; 1096-1208
• DOI: 10.1016/j.micpath.2018.01.042

The virulence properties of Candida spp. presents in landfill leachate still unknown until today and they constitutes a serious source of potential danger for humans. We investigate the antifungal susceptibility, production of hydrolytic enzymes and biofilm formation on polystyrene as well as glass in Candida spp. strains isolated from a landfill leachate treatment station in Borj Chakir (Tunisia). 37 yeast strains were isolated belonging to the following species: C. robusta, C. lusitaniae, C. tropicalis, C. krusei. Most isolated yeast strains were resistant to Amphotericin B, produced several hydrolytic enzymes (67.56% produced phospholipase, 86.04% protease, 64.86% esterase) and most of them are able to degrade hemoglobin. All assayed Candida strains have been able to form biofilm on polystyrene depending on the species and strain of Candida. Landfills receiving clinical waste are a potential source of Candida ssp. strains with several virulence properties which allow them to survive in different aquatic biotopes. •Landfill leachate is a serious problem of virulent Candida spp. strains.•C. robusta, C. lusitaniae, C. tropicalis, C. krusei are the dominant strains isolated from the landfill leachate.•Most strains were resistant to Amphotericin B and able to produce several extracellular enzymes.•All strains were able to form biofilm on polystyrene surface with different degrees.