Inhibition of methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) by antimicrobial peptides (AMPs) and plant essential oils

Zouhir, Abdelmajid; Jridi, Taoufik; Nefzi, Adel; Hamida, Jeannette Ben; Sebei, Khaled

doi:10.1080/13880209.2016.1190763

Cited by 36 publications

(35 citation statements)

References 92 publications

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“…Although there are several reports on the antibacterial activity of EOs against S. aureus (e.g., see [ 59 , 60 , 61 ]), many of these studies involved high EO concentrations and only a few studies evaluated the effects of EOs at concentrations below 50 μg/mL. For example, Yamani et al reported that EOs from Ocimum tenuiflorum at 2.25–2.5 μg/mL had bacteriostatic activity against two S. aureus strains, including MRSA [ 62 ].…”

Section: Resultsmentioning

confidence: 99%

Chemical Composition and Antibacterial Activity of Essential Oils from Ferula L. Species against Methicillin-Resistant Staphylococcus aureus

et al. 2018

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Essential oils (EOs) were obtained by hydrodistillation of various parts of Ferula ovina (Boiss.) Boiss., Ferula iliensis Krasn. ex. Korovin, and Ferula akitschkensis B. Fedtsch. ex Koso-Pol., collected in the flowering/budding and fruiting stages. Eight samples of EOs isolated from F. ovina and four samples from F. akitsckensis were analyzed by gas chromatography–mass spectrometry (GC-MS). The major constituents of F. ovina EOs were α-pinene (6.9–47.8%), β-pinene (1.5–7.1%), sabinene (0.1–20.5%), β-phellandrene (0–6.5%), trans-verbenol (0.9–7.4%), eremophilene (3.1–12%), and 6Z-2,5,5,10-tetramethyl-undeca-2,6,9-trien-8-one (0–13.7%). The major constituents of F. akitsckensis EOs were α-pinene (0–46.2%), β-pinene (0–47.9%), sabinene (0–28.3%), eremophilene (0–10.6), β-caryophyllene (0–7.5%), himachalen-7-ol (0–28.2%), and an himachalol derivative (0–8.3%). Samples of EOs from F. ovina, F. iliensis, and F. akitsckensis were evaluated for antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) pulse-field gel electrophoresis type USA300 (LAC). EOs from F. ovina exhibited the highest antibacterial activity compared to samples from other Ferula spp., with the most potent EOs being isolated from roots at the flowering and fruiting stages and stems at the fruiting stage (IC50 values of 19.1, 20.9, and 22.9 µg/mL, respectively). Although EOs demonstrated concentration-dependent inhibition of MRSA growth, analysis of the major constituents (α-pinene, β-pinene, and sabinene) showed that they had low activity, suggesting that other components were likely responsible for the observed bioactivity of the unfractionated EOs. Indeed, correlation of the GC-MS data with antibacterial activity suggested that the putative components responsible for antibacterial activity were, either individually or in combination, eremophilene and trans-verbenol. Overall, these results suggest that the EOs from F. ovina could have potential for use as alternative remedies for the treatment of infectious diseases caused by MRSA.

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Section: Resultsmentioning

confidence: 99%

Chemical Composition and Antibacterial Activity of Essential Oils from Ferula L. Species against Methicillin-Resistant Staphylococcus aureus

et al. 2018

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“…Here we just tested two active ingredients, carvacrol, and cinnamaldehyde, which showed excellent ability to eradicate stationary phase B. henselae even at a much lower concentration than correlated essential oil samples used. Some previous studies have identified the main ingredients of some active essential oils such as mountain savory, thyme, lemongrass, limette, and cumin, including geranial, β-pinene, thymol, γ-terpinene, citronellal and so on [51]. The antimicrobial activity of these components should be studied thoroughly in the future in order to determine their utility.…”

Section: Discussionmentioning

confidence: 99%

Essential Oils with High Activity against Stationary Phase Bartonella henselae

Shi

Zhang

2019

Antibiotics

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Bartonella henselae is a fastidious Gram-negative intracellular bacterium that can cause cat scratch disease, endocarditis in humans and animals, as well as other complications, leading to acute or chronic infections. The current treatment for Bartonella infections is not very effective presumably due to bacterial persistence. To develop better therapies for persistent and chronic Bartonella infections, in this study, with the help of SYBR Green I/PI viability assay, we performed a high-throughput screening of an essential oil library against the stationary phase B. henselae. We successfully identified 32 essential oils that had high activity, including four essential oils extracted from Citrus plants, three from Origanum, three from Cinnamomum, two from Pelargonium, and two from Melaleuca, as well as frankincense, ylang-ylang, fir needle, mountain savory (winter), citronella, spearmint, elemi, vetiver, clove bud, allspice, and cedarwood essential oils. The minimal inhibitory concentration (MIC) determination of these 32 top hits indicated they were not only active against stationary phase non-growing B. henselae but also had good activity against log-phase growing B. henselae. The time-kill assay showed 13 active hits, including essential oils of oregano, cinnamon bark, mountain savory (winter), cinnamon leaf, geranium, clove bud, allspice, geranium bourbon, ylang-ylang, citronella, elemi, and vetiver, could eradicate all stationary phase B. henselae cells within seven days at the concentration of 0.032% (v/v). Two active ingredients, carvacrol and cinnamaldehyde, of oregano and cinnamon bark essential oils, respectively, were shown to be very active against the stationary phase B. henselae such that they were able to eradicate all the bacterial cells even at the concentration ≤ 0.01% (v/v). More studies are needed to identify the active components of some potent essential oils, decode their antimicrobial mechanisms, and evaluate their activity against Bartonella infections in animal models.

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“…Interestingly, antimicrobial peptides (AMPs, [ 45 ]) are naturally occurring peptides with antimicrobial activity that are produced by fungi, plants, amphibians, crustaceans, birds, and mammals, and could also be synthetically produced [ 46 ]. AMPs have shown activity against the most important ESKAPE pathogens ( Enterococcus faecium , Staphylococcus aureus , Klebsiella pneumoniae , Acinetobacter baumannii , Pseudomonas aeruginosa , and Enterobacter species) [ 16 , 17 , 46 , 47 ]. Overall, AMPs could be an easy and low-cost therapy against staphylococcal infections in farm animals.…”

Section: Treatments Based On Feed Supplementsmentioning

confidence: 99%

Alternative Anti-Infective Treatments to Traditional Antibiotherapy against Staphylococcal Veterinary Pathogens

et al. 2020

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The genus Staphylococcus encompasses many species that may be pathogenic to both humans and farm animals. These bacteria have the potential to acquire multiple resistant traits to the antimicrobials currently used in the veterinary or medical settings. These pathogens may commonly cause zoonoses, and the infections they cause are becoming difficult to treat due to antimicrobial resistance. Therefore, the development of novel alternative treatments to traditional antibiotherapy has gained interest in recent years. Here, we reviewed the most promising therapeutic strategies developed to control staphylococcal infections in the veterinary field to overcome antibiotic resistance.

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Inhibition of methicillin-resistant Staphylococcus aureus (MRSA) by antimicrobial peptides (AMPs) and plant essential oils

Cited by 36 publications

References 92 publications

Chemical Composition and Antibacterial Activity of Essential Oils from Ferula L. Species against Methicillin-Resistant Staphylococcus aureus

Chemical Composition and Antibacterial Activity of Essential Oils from Ferula L. Species against Methicillin-Resistant Staphylococcus aureus

Essential Oils with High Activity against Stationary Phase Bartonella henselae

Alternative Anti-Infective Treatments to Traditional Antibiotherapy against Staphylococcal Veterinary Pathogens

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