Phenolic and nonpolar fractions of elaeagnus rhamnoides (l.) a. Nelson extracts as virulence modulators—in vitro study on bacteria, fungi, and epithelial cells
PBN-AR
Instytucja
Instytut Uprawy Nawożenia i Gleboznawstwa - Państwowy Instytut Badawczy
Informacje podstawowe
Główny język publikacji
en
Czasopismo
MOLECULES (30pkt w roku publikacji)
ISSN
1420-3049
EISSN
Wydawca
MDPI AG
DOI
URL
Rok publikacji
2018
Numer zeszytu
7
Strony od-do
1-19
Numer tomu
23
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Elaeagnus rhamnoides butanol extracts
antivirulence properties
nonpolar fractions
phenolic
Streszczenia
Język
angielski
Treść
Butanol extracts from leaves, twigs, and fruits of Elaeagnus rhamnoides (L.) A. Nelson (sea buckthorn, SBT) were fractionated into phenolic and nonpolar lipid components, the chemical composition of which was analyzed. Assuming that an effect on natural microbiota and host epithelial cells needs to be assessed, regardless of the purpose of using SBT formulations in vivo, the minimal inhibitory/biocidal/fungicidal concentrations (MICs/MBCs/MFCs) of the fractions and reference phytocompounds were screened, involving 17 species of Gram-positive and Gram-negative bacteria and Candida species. The MICs of SBT extracts were in the range of 0.25⁻2.0 mg∙mL−1. Since direct antimicrobial activity of the extracts was quite low and variable, the impact of subMIC on the important in vivo persistence properties of model microorganisms S. aureus and C. albicans was evaluated. Tests for adhesion and biofilm formation on an abiotic surface and on surfaces conditioned with fibrinogen, collagen, plasma, or artificial saliva showed the inhibitory activity of the fractions. The effects on fluorescein isothiocyanate (FITC)-labeled staphylococci adhesion to fibroblasts (HFF-1) and epithelial cells (Caco-2), and on fungal morphogenesis, indicated that SBT extracts have high antivirulence potential. Cytotoxicity tests (MTT reduction) on the standard fibroblast cell line showed variable biological safety of the fractions depending on their composition and concentration. The new information afforded by this study, additional to that already known, is of potential practical value in the application of SBT-derived preparations as antivirulence agents.
Cechy publikacji
oryginalny artykuł naukowy
Inne
System-identifier
PX-5ce29c70d5ded2aef97504eb
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