title: Biofilm inhibition activity of traditional medicinal plants from Northwestern Argentina against native pathogen and environmental microorganisms.
abstract: Plants have been commonly used in popular medicine of most cultures for the treatment of disease. The in vitro antimicrobial activity of certain Argentine plants used in traditional medicine has been reported. The aim of this study was to investigate the antimicrobial, anti-biofilm, and anti-cell adherence activities of native plants (Larrea divaricata, Tagetes minuta, Tessaria absinthioides, Lycium chilense, and Schinus fasciculatus) collected in northwestern Argentina.
  The activities of the five plant species were evaluated in Bacillus strains and clinical strains of coagulase-negative Staphylococcus isolated from northwestern Argentina and identified by 16S rDNA.
  Lycium chilense and Schinus fasciculatus were the most effective antimicrobial plant extracts (15.62µg/ml and 62.50µg/ml for Staphylococcus sp. Mcr1 and Bacillus sp. Mcn4, respectively). The highest (66%) anti-biofilm activity against Bacillus sp. Mcn4 was observed with T. absinthioides and L. divaricate extracts. The highest (68%) anti-biofilm activity against Staphylococcus sp. Mcr1 was observed with L. chilense extract. T. minuta, T. absinthioides, and L. divaricata showed percentages of anti-biofilm activity of between 55% and 62%. The anti-adherence effects of T. minuta and L. chilense observed in Bacillus sp. Mcn4 reflected a difference of only 22% and 10%, respectively, between anti-adherence and biofilm inhibition. Thus, the inhibition of biofilm could be related to cell adherence. In Staphylococcus sp. Mcr1, all plant extracts produced low anti-adherence percentages.
  These five species may represent a source of alternative drugs derived from plant extracts, based on ethnobotanical knowledge from northwest Argentina.
authors.affiliation: Planta Piloto de Procesos Industriales Microbiológicos, Consejo Nacional de Investigaciones Científicas y Técnicas San Miguel de Tucumán, Tucumán, Argentina.|Facultad de Bioquímica, Química, Farmacia y Biotecnología, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: Cintia Mariana
authors.initials: CM
authors.lastname: Romero
authors.affiliation: Planta Piloto de Procesos Industriales Microbiológicos, Consejo Nacional de Investigaciones Científicas y Técnicas San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: Cristian Germán
authors.initials: CG
authors.lastname: Vivacqua
authors.affiliation: Planta Piloto de Procesos Industriales Microbiológicos, Consejo Nacional de Investigaciones Científicas y Técnicas San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: María Belén
authors.initials: MB
authors.lastname: Abdulhamid
authors.affiliation: Planta Piloto de Procesos Industriales Microbiológicos, Consejo Nacional de Investigaciones Científicas y Técnicas San Miguel de Tucumán, Tucumán, Argentina.|Facultad de Bioquímica, Química, Farmacia y Biotecnología, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: Mario Domingo
authors.initials: MD
authors.lastname: Baigori
authors.affiliation: Facultad de Ciencias Naturales e Instituto Miguel Lillo, San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: Alberto Carlos
authors.initials: AC
authors.lastname: Slanis
authors.affiliation: Facultad de Bioquímica, Química, Farmacia y Biotecnología, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: María Cristina Gaudioso de
authors.initials: MC
authors.lastname: Allori
authors.affiliation: Cátedra de Química Orgánica, Facultad de Ciencias Exactas y Tecnología, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina.
authors.forename: María Laura
authors.initials: ML
authors.lastname: Tereschuk
mesh_terms: D027926:Anacardiaceae / Q000737:chemistry; D001118:Argentina; D001407:Bacillus / Q000187:drug effects*; D018441:Biofilms / Q000187:drug effects* / Q000254:growth & development; D002448:Cell Adhesion / Q000187:drug effects; D004783:Environmental Microbiology; D006801:Humans; D032442:Larrea / Q000737:chemistry; D032305:Lycium / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000494:pharmacology*; D010946:Plants, Medicinal / Q000737:chemistry* / Q000145:classification; D013210:Staphylococcus / Q000187:drug effects*; D031686:Tagetes / Q000737:chemistry
chemical_list: D010936:Plant Extracts