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Ołdak A, Zielińska D, Łepecka A, Długosz E, Kołożyn-Krajewska D. Lactobacillus plantarum Strains Isolated from Polish Regional Cheeses Exhibit Anti-Staphylococcal Activity and Selected Probiotic Properties. Probiotics Antimicrob Proteins 2020; 12:1025-1038. [PMID: 31463690 PMCID: PMC7456411 DOI: 10.1007/s12602-019-09587-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Twenty-nine Lactobacillus plantarum strains isolated from different types of Polish regional cheeses (Oscypek and Korycinski) were assessed for selected probiotic properties and anti-staphylococcal activity. Most of the tested L. plantarum strains were considered safe. Whole bacterial cultures (WBC) and cell-free supernatants (CFSs) of L. plantarum strains inhibited growth of Staphylococcus aureus (average inhibition growth zones were 2.8 mm ± 1.2 and 2.8 mm ± 1.1 respectively). Moreover, almost all neutralized, catalase-treated cell-free supernatants (CFN) of L. plantarum cultures also exhibited slight anti-staphylococcal activity in vitro. The most promising strains Os4 and Kor14 were selected for further study. Both strains were able to survive during digestive gastro-intestinal passage model. Live cells of L. plantarum Os4 and Kor14 caused the strongest inhibition of S. aureus adhesion to Caco-2 cells comparing with CFN and heat-killed bacterial cells. S. aureus and L. plantarum (Os4 or Kor14) co-cultured in skim milk resulted in growth inhibition of S. aureus in both 8 °C and 37 °C incubation temperatures. Observed abilities, demonstrated for L. plantarum Os4 and Kor14, confirms that these strains could be used in the food industry as protective cultures.
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Affiliation(s)
- Aleksandra Ołdak
- Department of Food Gastronomy and Food Hygiene, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Science - SGGW, Nowoursynowska 159c, 02-776, Warsaw, Poland
| | - Dorota Zielińska
- Department of Food Gastronomy and Food Hygiene, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Science - SGGW, Nowoursynowska 159c, 02-776, Warsaw, Poland.
| | - Anna Łepecka
- Department of Food Gastronomy and Food Hygiene, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Science - SGGW, Nowoursynowska 159c, 02-776, Warsaw, Poland
| | - Ewa Długosz
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Science - SGGW, Ciszewskiego 8, 02-776, Warsaw, Poland
| | - Danuta Kołożyn-Krajewska
- Department of Food Gastronomy and Food Hygiene, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Science - SGGW, Nowoursynowska 159c, 02-776, Warsaw, Poland
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Alaksandr Ž, Sergey G, Maksim P, Sergey K, Niyaz S, Uladzimir P, Mikhail S. Efficient matrix-assisted refolding of the recombinant anti-staphylococcal truncated endolysin LysKCA and its structural and enzymatic description. Protein Expr Purif 2020; 174:105683. [PMID: 32534980 DOI: 10.1016/j.pep.2020.105683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/21/2020] [Accepted: 05/29/2020] [Indexed: 01/21/2023]
Abstract
The recombinant truncated endolysin LysK consisting of two catalytic domains, N-terminal CHAP and amidase-2 (LysKCA) was overexpressed in E. coli in the form of inclusion bodies (IBs). These IBs were dissolved in 6 M solution of urea followed by the refolding process. The refolding efficacy of the dilution and matrix-assisted renaturation method on SP Sepharose was compared at different purification stages of LysKCA. Solubilizate of IBs, DEAE Sepharose flowthrough, and SP Sepharose elution fractions were examined. The presence of negatively charged nucleic acids (NA) in the solution has shown a decrease in the recombinant LysKCA refolding yield (less than 11.5 ± 1.3% for both renaturation methods) due to their non-specific interaction with the positively charged endolysin. The renaturation efficiency of the enzyme purified from NA (SP elution fraction) was about 29.5 ± 6.7% and 28.2 ± 3.75% for dilution and matrix-assisted methods respectively. The later approach allows conducting one-step LysKCA refolding, purification and collection, and also noticeably cuts time and material expenses. The analysis of CD spectroscopy data of LysKCA, renatured on the resin matrix, revealed alpha helices and beta strands content similar to that of the modeled 3D structure. The theoretical 3D model with two predicted domains (CHAP and amidase-2) agrees well with the differential scanning calorimetry (DSC) results of the renatured LysKCA showing two well-resolved peaks corresponding to the two calorimetrically-revealed domains with the midpoint transition temperature (Tm) of 40.1 and 65.3°С. The enzyme so obtained exhibited in vitro anti-staphylococcal activity with 2.3 ± 0.45 × 103 U/mg and retained it for at least one year.
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Affiliation(s)
- Žydziecki Alaksandr
- Department of Biochemistry, Faculty of Biology, Belarusian State University, Minsk, 220030, Belarus.
| | - Golenchenko Sergey
- Department of Microbiology Faculty of Biology, Belarusian State University, Minsk, 220030, Belarus
| | - Patapovich Maksim
- Department of Microbiology Faculty of Biology, Belarusian State University, Minsk, 220030, Belarus
| | - Kleymenov Sergey
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of Russian Academy of Science, Moscow, 119071, Russia; Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Moscow, 119334, Russia
| | - Safarov Niyaz
- Laboratory of Biotechnology, Baku State University, Baku, AZ, 1148, Azerbaijan
| | - Prakulevich Uladzimir
- Department of Microbiology Faculty of Biology, Belarusian State University, Minsk, 220030, Belarus
| | - Sholukh Mikhail
- Department of Biochemistry, Faculty of Biology, Belarusian State University, Minsk, 220030, Belarus
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Rishi L, Mittal G, Agarwal RK, Sharma T. Melioration in Anti-staphylococcal Activity of Conventional Antibiotic(s) by Organic Acids Present in the Cell Free Supernatant of Lactobacillus paraplantarum. Indian J Microbiol 2017; 57:359-364. [PMID: 28904422 DOI: 10.1007/s12088-017-0659-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 07/03/2017] [Indexed: 11/24/2022] Open
Abstract
In view of emerging drug resistance in pathogens, there is a need to explore alternative strategies to combat infections. Use of probiotics is one such option. In this regard, efficacy of Lactobacillus plantarum has been reported against Staphylococcus aureus. Here, we propose that cell free supernatant (CFS) of Lactobacillus paraplantarum when used in combination with conventional antibiotics viz. ampicillin and oxacillin [to which the methicillin resistant Staphylococcus aureus (MRSA) strains were originally resistant] reduce the minimum inhibitory concentrations of these antibiotics, rendering the combination either synergistic or additive against the tested MRSA strain. The anti-staphylococcal activity was observed to be due to organic acids (acetic acid and lactic acid as confirmed by HPLC analysis) present in the CFS, as neutralization of the CFS with an alkali, sodium hydroxide (NaOH), caused the complete abrogation of its activity. The role of H2O2 and bacteriocin present in the CFS was also ruled out. The findings of this study suggest that cell free supernatant and ampicillin/oxacillin combination(s) might help in rejuvenating the use of conventional anti-staphylococcal antibiotics for the treatment of multi-drug resistant strains.
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Affiliation(s)
- Lavanya Rishi
- Department of Microbiology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Swami Rama Nagar, Dehradun, Uttarakhand 248140 India
| | - Garima Mittal
- Department of Microbiology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Swami Rama Nagar, Dehradun, Uttarakhand 248140 India
| | - Rajeev Kumar Agarwal
- Department of Microbiology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Swami Rama Nagar, Dehradun, Uttarakhand 248140 India
| | - Taruna Sharma
- Department of Pharmacology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Swami Rama Nagar, Dehradun, Uttarakhand 248140 India
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Merghni A, Marzouki H, Hentati H, Aouni M, Mastouri M. Antibacterial and antibiofilm activities of Laurus nobilis L. essential oil against Staphylococcus aureus strains associated with oral infections. Curr Res Transl Med 2015; 64:S0369-8114(15)00101-7. [PMID: 26657812 DOI: 10.1016/j.patbio.2015.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 10/30/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Laurus nobilis L. is an aromatic herb with relevant medicinal properties due to its important chemical composition and its potential therapeutic effects. In this study, we investigate the chemical composition, the antibacterial and the antibiofilms activities of Tunisian L. nobilis L. essential oils against clinical Staphylococcus aureus strains. METHODS The chemical composition of L. nobilis L. essential oils was analysed by Gas Chromatography-Mass Spectrometry (GC-MS). The antibacterial activity of L. nobilis L. essential oils was evaluated in vitro against oral S. aureus (n=21) strains using broth microdilution method. The antibiofilm activity was assessed via Crystal Violet staining and MTT assays. RESULTS Our results revealed that GC-MS assay exhibited 1.8-Cineole, methyl eugenol and α-terpinyl acetate as the major compounds in the essential oils. Moreover, the essential oil from Sousse exhibited the best bactericidal activity (MICs values ranged from 3.91 to 15.62mgm-1). Furthermore, this oil showed a strong biofilm inhibition effect above 70%, from a low sub-inhibitory concentration (1/16×MIC). MTT assay revealed that both essential oils displayed an excellent antibiofilm activity with eradication percentages ranging from 79.6±2.27 to 95.2±0.56. CONCLUSION Our finding demonstrated that L. nobilis L. essential oils are able to inhibit oral S. aureus strains with important antibiofilm efficacy. It could have a promising role in the prevention of oral diseases.
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Affiliation(s)
- A Merghni
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia.
| | - H Marzouki
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia
| | - H Hentati
- Buccodental surgery department of Monastir dental clinic, laboratory of oral health and orofacial rehabilitation (LR12ES11), Monastir, Tunisia
| | - M Aouni
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia
| | - M Mastouri
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia; Laboratory of microbiology, university hospital of Fattouma Bourguiba, Monastir, Tunisia
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Radulović NS, Denić MS, Stojanović-Radić ZZ. Synthesis of small combinatorial libraries of natural products: identification and quantification of new long-chain 3-methyl-2-alkanones from the root essential oil of Inula helenium L. (Asteraceae). Phytochem Anal 2014; 25:75-80. [PMID: 23922264 DOI: 10.1002/pca.2466] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Recently, a potent anti-staphylococcal activity of Inula helenium L. (Asteraceae) root essential oil was reported. Also, bioassay guided fractionation of the oil pointed to eudesmane sesquiterpene lactones and a series of unidentified constituents as the main carriers of the observed activity. OBJECTIVE To identify nine new constituents (long-chain 3-methyl-2-alkanones) from a fraction of this root essential oil with a low minimum inhibitory concentration value (0.8 µg/mL) by employing a synthetic methodology that leads to the formation of a small combinatorial library of these compounds. METHODS The identity of these constituents was inferred from mass spectral fragmentation patterns and GC retention data. A library of 3-methyl-2-alkanones (C11 -C19 homologous series) was synthesised in three steps starting from methyl acetoacetate and the corresponding alkyl halides. The synthetic library was also screened for in vitro anti-microbial activity. RESULTS Gas chromatographic analyses of I. helenium essential oil samples with spiked compounds from the synthesised library corroborated the tentative identifications of the long-chain 3-methyl-2-alkanones. The availability of these anti-microbial compounds from this library made it possible to construct GC/FID calibration curves and determine their content in the plant material: 0.08 - 24.2 mg/100 g of dry roots. CONCLUSION The small combinatorial library approach enabled the first unequivocal identification of long-chain 3-methyl-2-alkanones as plant secondary metabolites, and, also, allowed determination of not only a single compound and biological properties, but those of a group of structurally related compounds.
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Affiliation(s)
- Niko S Radulović
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000, Niš, Serbia
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Grumezescu AM, Ghitulica CD, Voicu G, Huang KS, Yang CH, Ficai A, Vasile BS, Grumezescu V, Bleotu C, Chifiriuc MC. New silica nanostructure for the improved delivery of topical antibiotics used in the treatment of staphylococcal cutaneous infections. Int J Pharm 2013; 463:170-6. [PMID: 23871740 DOI: 10.1016/j.ijpharm.2013.07.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/05/2013] [Accepted: 07/08/2013] [Indexed: 11/19/2022]
Abstract
In this paper, we report the synthesis, characterization (FT-IR, XRD, BET, HR-TEM) and bioevaluation of a novel γ-aminobutiric acid/silica (noted GABA-SiO₂ or γ-SiO₂) hybrid nanostructure, for the improved release of topical antibiotics, used in the treatment of Staphylococcus aureus infections. GABA-SiO₂ showed IR bands which were assigned to Si-O-Si (stretch mode). The XRD pattern showed a broad peak in the range of 18-30° (2θ), indicating an amorphous structure. Based on the BET analysis, estimations about surface area (438.14 m²/g) and pore diameters (4.76 nm) were done. TEM observation reveals that the prepared structure presented homogeneity and an average size of particles not exceeding 10nm. The prepared nanostructure has significantly improved the anti-staphylococcal activity of bacitracin and kanamycin sulfate, as demonstrated by the drastic decrease of the minimal inhibitory concentration of the respective antibiotics loaded in the GABA-SiO₂ nanostructure. These results, correlated with the high biocompatibility of this porous structure, are highlighting the possibility of using this carrier for the local delivery of the antimicrobial substances in lower active doses, thus reducing their cytotoxicity and side-effects.
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Affiliation(s)
- Alexandru Mihai Grumezescu
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania
| | - Cristina Daniela Ghitulica
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania
| | - Georgeta Voicu
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania
| | - Keng-Shiang Huang
- The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan
| | - Chih-Hui Yang
- Department of Biological Science and Technology, I-Shou University, Taiwan
| | - Anton Ficai
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania.
| | - Bogdan Stefan Vasile
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania
| | - Valentina Grumezescu
- Politehnica University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, Polizu Street no 1-7, 011061 Bucharest, Romania; Laser-Surface-Plasma Interactions Laboratory, Lasers Department National Institute for Lasers, Plasma, and Radiation Physics, 77125 Magurele, Romania
| | - Coralia Bleotu
- Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu, 030304 Bucharest, Romania
| | - Mariana Carmen Chifiriuc
- University of Bucharest, Faculty of Biology, Microbiology Immunology Department, Aleea Portocalelor no 1-3, 060101 Bucharest, Romania
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