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Landeros-Páramo L, Saavedra-Molina A, Cholico-González D, Rosas G. A comparative study of the catalytic activity between Ag nanoparticles and Ag flower-like particles synthesized by the Sedum praealtum aqueous extract. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2156415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Luis Landeros-Páramo
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
| | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, Morelia, México
| | - Diana Cholico-González
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
| | - G. Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
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Bernardo WLDC, Boriollo MFG, Tonon CC, da Silva JJ, Oliveira MC, de Moraes FC, Spolidorio DMP. Biosynthesis of silver nanoparticles from Syzygium cumini leaves and their potential effects on odontogenic pathogens and biofilms. Front Microbiol 2022; 13:995521. [PMID: 36246249 PMCID: PMC9556836 DOI: 10.3389/fmicb.2022.995521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/02/2022] [Indexed: 11/13/2022] Open
Abstract
This study analyzed the antimicrobial and antibiofilm action and cytotoxicity of extract (HEScL) and silver nanoparticles (AgNPs-HEScL) from Syzygium cumini leaves. GC–MS, UV–Vis, EDX, FEG/SEM, DLS and zeta potential assays were used to characterize the extract or nanoparticles. Antimicrobial, antibiofilm and cytotoxicity analyses were carried out by in vitro methods: agar diffusion, microdilution and normal oral keratinocytes spontaneously immortalized (NOK-SI) cell culture. MICs of planktonic cells ranged from 31.2–250 (AgNPs-HEScL) to 1,296.8–10,375 μg/ml (HEScL) for Actinomyces naeslundii, Fusobacterium nucleatum, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mutans, Streptococcus oralis, Veillonella dispar, and Candida albicans. AgNPs-HEScL showed antibiofilm effects (125–8,000 μg/ml) toward Candida albicans, Streptococcus mutans and Streptococcus oralis, and Staphylococcus aureus and Staphylococcus epidermidis. The NOK-SI exhibited no cytotoxicity when treated with 32.8 and 680.3 μg/ml of AgNPs-HEScL and HEScL, respectively, for 5 min. The data suggest potential antimicrobial and antibiofilm action of HEScL, and more specifically, AgNPs-HEScL, involving pathogens of medical and dental interest (dose-, time- and species-dependent). The cytotoxicity of HEScL and AgNPs-HEScL detected in NOK-SI was dose- and time-dependent. This study presents toxicological information about the lyophilized ethanolic extract of S. cumini leaves, including their metallic nanoparticles, and adds scientific values to incipient studies found in the literature.
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Affiliation(s)
- Wagner Luis de Carvalho Bernardo
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara, Brazil
- *Correspondence: Wagner Luís de Carvalho Bernardo,
| | - Marcelo Fabiano Gomes Boriollo
- Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas, Piracicaba, Brazil
- Marcelo Fabiano Gomes Boriollo,
| | - Caroline Coradi Tonon
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara, Brazil
| | - Jeferson Júnior da Silva
- Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas, Piracicaba, Brazil
| | - Mateus Cardoso Oliveira
- Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas, Piracicaba, Brazil
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Landeros-Páramo L, Saavedra-Molina A, Gómez-Hurtado MA, Rosas G. The effect of AgNPS bio-functionalization on the cytotoxicity of the yeast Saccharomyces cerevisiae. 3 Biotech 2022; 12:196. [PMID: 35928500 PMCID: PMC9343563 DOI: 10.1007/s13205-022-03276-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 07/21/2022] [Indexed: 11/29/2022] Open
Abstract
This work used Sedum praealtum leaf extract to synthesize silver nanoparticles (AgNPs) in a single step. The cytotoxicity of AgNPs was studied with the yeast Saccharomyces cerevisiae W303-1. In addition, the antioxidant activity of the DPPH radical was studied both in the extract of S. praealtum and in the AgNPs. UV-Vis spectroscopy determined the presence of AgNPs by the location of the surface plasmon resonance (SPR) band at 434 nm. TEM and XRD analyzes show AgNPs with fcc structure and hemispherical morphology. Also, AgNPs range in size from 5 to 25 nm and have an average size of 14 nm. 1H NMR, FTIR, and UV-Vis spectroscopy techniques agreed that glycosidic compounds were the main phytochemical components responsible for the reduction and stabilization of AgNPs. In addition, AgNPs presented a maximum of 12% toxicity in yeast attributed to the generation of ROS. Consequently, there was low bioactivity because glycoside compounds cover the biosynthesized AgNPs from S. praealtum. These findings allow applications of AgNPs involving contact with mammals and higher organisms.
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Affiliation(s)
- L. Landeros-Páramo
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - A. Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - Mario A. Gómez-Hurtado
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - G. Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
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Jibrin MO, Liu Q, Guingab-Cagmat J, Jones JB, Garrett TJ, Zhang S. Metabolomics Insights into Chemical Convergence in Xanthomonas perforans and Metabolic Changes Following Treatment with the Small Molecule Carvacrol. Metabolites 2021; 11:879. [PMID: 34940636 PMCID: PMC8706651 DOI: 10.3390/metabo11120879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 01/20/2023] Open
Abstract
Microbes are natural chemical factories and their metabolome comprise diverse arrays of chemicals. The genus Xanthomonas comprises some of the most important plant pathogens causing devastating yield losses globally and previous studies suggested that species in the genus are untapped chemical minefields. In this study, we applied an untargeted metabolomics approach to study the metabolome of a globally spread important xanthomonad, X. perforans. The pathogen is difficult to manage, but recent studies suggest that the small molecule carvacrol was efficient in disease control. Bacterial strains were treated with carvacrol, and samples were taken at time intervals (1 and 6 h). An untreated control was also included. There were five replicates for each sample and samples were prepared for metabolomics profiling using the standard procedure. Metabolomics profiling was carried out using a thermo Q-Exactive orbitrap mass spectrometer with Dionex ultra high-performance liquid chromatography (UHPLC) and an autosampler. Annotation of significant metabolites using the Metabolomics Standards Initiative level 2 identified an array of novel metabolites that were previously not reported in Xanthomonas perforans. These metabolites include methoxybrassinin and cyclobrassinone, which are known metabolites of brassicas; sarmentosin, a metabolite of the Passiflora-heliconiine butterfly system; and monatin, a naturally occurring sweetener found in Sclerochiton ilicifolius. To our knowledge, this is the first report of these metabolites in a microbial system. Other significant metabolites previously identified in non-Xanthomonas systems but reported in this study include maculosin; piperidine; β-carboline alkaloids, such as harman and derivatives; and several important medically relevant metabolites, such as valsartan, metharbital, pirbuterol, and ozagrel. This finding is consistent with convergent evolution found in reported biological systems. Analyses of the effect of carvacrol in time-series and associated pathways suggest that carvacrol has a global effect on the metabolome of X. perforans, showing marked changes in metabolites that are critical in energy biosynthesis and degradation pathways, amino acid pathways, nucleic acid pathways, as well as the newly identified metabolites whose pathways are unknown. This study provides the first insight into the X. perforans metabolome and additionally lays a metabolomics-guided foundation for characterization of novel metabolites and pathways in xanthomonad systems.
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Affiliation(s)
- Mustafa Ojonuba Jibrin
- Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA; (M.O.J.); (Q.L.)
- Department of Crop Protection, Ahmadu Bello University, Zaria 810103, Nigeria
| | - Qingchun Liu
- Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA; (M.O.J.); (Q.L.)
| | - Joy Guingab-Cagmat
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (J.G.-C.); (T.J.G.)
| | - Jeffrey B. Jones
- Plant Pathology Department, University of Florida, Gainesville, FL 32611, USA;
| | - Timothy J. Garrett
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (J.G.-C.); (T.J.G.)
| | - Shouan Zhang
- Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA; (M.O.J.); (Q.L.)
- Plant Pathology Department, University of Florida, Gainesville, FL 32611, USA;
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GC-MS and Antibacterial Potential of Methanolic Extract Hyphaene Thebaica L. Fruit Pulp against Antibiotics-resistant Pathogens. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2021. [DOI: 10.22207/jpam.15.3.62] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Methanol extract obtained from the fruits of Hyphaene thebaica (doum fruit) was chemically analyzed using GC-MS (gas chromatography-mass spectrometry). Up to thirty compounds were identified in the extract. Acetic acid decyl ester (36.80%), n-Hexadecenoic acid (5.14%),1H-Purine-2,6-dione, 3,7-dihydro-1-methyl (4.24%), 2-Furancarboxaldehyde, 5-(2-hydroxy-2-phenylacetyl)-dimethylhydrazone (4.67%), Propanoic acid 3,3′-dithiobis (3.52%) and [1,2,4] Triazolo[1,5-a]pyrimidin-7-ol were major components. The antibacterial potential of the extract against six clinical bacterial isolates resistant to antibiotics was also investigated, using various in vitro assays including well diffusion, minimal inhibitory and minimal bactericidal concentration. It was found that, the methanol extract of doum fruit was characterized by antibacterial action toward one Gram-positive ß-lactamase bacteria (Staphylococcus aureus), and one Gram-negative Multidrug-resistant bacteria (Proteus mirabilis). The other four bacterial strains showed no susceptibility towards the extract. The study suggests future additional biochemical and microbiological investigations in order to understand the mechanism of action of the bioactive molecules as antimicrobial agents.
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Antimicrobial effects of silver nanoparticles and extracts of Syzygium cumini flowers and seeds: Periodontal, cariogenic and opportunistic pathogens. Arch Oral Biol 2021; 125:105101. [PMID: 33676363 DOI: 10.1016/j.archoralbio.2021.105101] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/03/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVE This study aimed to analyze the antimicrobial effects of lyophilized hydroalcoholic extract (HEScSeed and HEScFlower) and silver nanoparticles (AgNPs-HEScSeed and AgNPs-HEScFlower) of S. cumini seed and flower, and to characterize some compounds of these extracts and their NPs. DESIGN Phytochemical screening was performed by GC-MS. Nanoparticles were characterized by UV-vis spectroscopy, energy-dispersive X-ray (EDX) spectrophotometry, scanning electron microscopy (SEM) and field emission gun (FEG), dynamic light scattering (DLS) and zeta potential (ZP). Antimicrobial susceptibility tests were analyzed by broth microdilution and agar diffusion methods. RESULTS HEScSeed and HEScFlower showed 7 and 17 phytochemical compounds, respectively. AgNPs-plant extracts were reported as stable and with variable shapes and sizes. All studied species (A. naeslundii, C. albicans, F. nucleatum, S. aureus, S. epidermidis, S. mutans, S. oralis and V. dispar) were susceptible to extracts and AgNPs-plant extracts, with varying degrees of antimicrobial activities (extract: 648.4-5,187.5 μg/mL; AgNPs-plant: 31.2-2,000 μg/mL). CONCLUSION The extracts of S. cumini seed and flower have antimicrobial action against pathogens of medical and dental interest, whose MIC and MMC are species-dependent. The AgNPs-HEScSeed and AgNPs-HEScFlower have different shapes, sizes, organic compounds, stability and electronegativity (capping), characteristics that contribute to their bacteriostatic and fungistatic effects, but at significantly lower concentrations than plant extracts.
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