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Enhanced Antibacterial Activity of Echinacea angustifolia Extract against Multidrug-Resistant Klebsiella pneumoniae through Niosome Encapsulation

With the increased occurrence of antibiotic-resistant bacteria, alternatives to classical antibiotics are urgently needed for treatment of various infectious diseases. Medicinal plant extracts are among the promising candidates due to their bioactive components. The aim of this study was to prepare...

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Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2021-06, Vol.11 (6), p.1573
Main Authors: Moghtaderi, Maryam, Mirzaie, Amir, Zabet, Negar, Moammeri, Ali, Mansoori-Kermani, Amirreza, Akbarzadeh, Iman, Eshrati Yeganeh, Faten, Chitgarzadeh, Arman, Bagheri Kashtali, Aliasghar, Ren, Qun
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creator Moghtaderi, Maryam
Mirzaie, Amir
Zabet, Negar
Moammeri, Ali
Mansoori-Kermani, Amirreza
Akbarzadeh, Iman
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Chitgarzadeh, Arman
Bagheri Kashtali, Aliasghar
Ren, Qun
description With the increased occurrence of antibiotic-resistant bacteria, alternatives to classical antibiotics are urgently needed for treatment of various infectious diseases. Medicinal plant extracts are among the promising candidates due to their bioactive components. The aim of this study was to prepare niosome-encapsulated extract and study its efficacy against multidrug-resistant strains. Encapsulation was first optimized by Design of Experiments, followed by the empirical study. The obtained niosomes were further characterized for the size and morphology using dynamic light scattering (DLS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Spherical niosomes had a diameter of 142.3 ± 5.1 nm, as measured by DLS. The entrapment efficiency (EE%) of extract reached up to 77.1% ± 0.3%. The prepared niosomes showed a controlled drug release within the tested 72 h and a storage stability of at least 2 months at both 4 and 25 °C. The encapsulated displayed up to 16-fold higher antibacterial activity against multidrug-resistant strains, compared to the free extract. Additionally, the niosome exhibited negligible cytotoxicity against human foreskin fibroblasts. We anticipate that the results presented herein could contribute to the preparation of other plant extracts with improved stability and antibacterial activity, and will help reduce the overuse of antibiotics by controlled release of natural-derived drugs.
doi_str_mv 10.3390/nano11061573
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subjects Antibacterial activity
Antibiotic resistance
Antibiotics
Antimicrobial agents
Bacteria
Biocompatibility
Cholesterol
Controlled release
Cytotoxicity
Design of experiments
Design optimization
Diameters
Drug delivery
Drug delivery systems
Drug resistance
Echinacea angustifolia
Efficiency
Electron microscopy
Encapsulation
Entrapment
Fibroblasts
Hemodialysis
Herbal medicine
Hydration
Infectious diseases
Klebsiella
Klebsiella pneumoniae
Light scattering
Medicinal plants
Morphology
Multidrug resistance
Nanoparticles
niosome
Nosocomial infections
Oils & fats
Optimization
Photon correlation spectroscopy
Plant diseases
Plant extracts
Scanning electron microscopy
Shelf life
Solvents
Spectrum analysis
stability
Storage stability
Strains (organisms)
Surfactants
Toxicity
Transmission electron microscopy
title Enhanced Antibacterial Activity of Echinacea angustifolia Extract against Multidrug-Resistant Klebsiella pneumoniae through Niosome Encapsulation
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