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Bandyopadhyay S, Naskar A, Acharya K, Mandal S. Antibiofilm and antivirulence efficacy of Pleurotus platypus methanolic extract against Staphylococcus aureus through ROS generation and cell membrane disruption. Microb Pathog 2024; 196:106992. [PMID: 39366589 DOI: 10.1016/j.micpath.2024.106992] [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: 06/26/2024] [Revised: 09/22/2024] [Accepted: 10/01/2024] [Indexed: 10/06/2024]
Abstract
Multi-drug resistance is recognized as a significant worldwide public health concern in the current century. Biofilm formation further exacerbates bacterial resistance to antibacterial medications, host immunological responses, and phagocytosis, resulting in long-lasting chronic illnesses. Investigating natural resources is a very potent approach for developing alternative anti-infective medications to effectively control multi-drug resistant bacterial infections. In this study, a unique mushroom species namely Pleurotus platypus had been discovered from the Terai-Duars region of West Bengal, India. The myco-chemical profiling and preliminary chemical analysis of Pleurotus platypus methanolic extract determined the significant presence of metabolites belonging to several major chemical classes such as flavonoid, alkaloid, triterpenoid, polyphenol, benzoic acids, coumarin, flavone etc. Most intriguingly, the extract possessed effective antibacterial, antibiofilm and antivirulence properties against Staphylococcus aureus and Methicillin resistant Staphylococcus aureus, one of the most notable drug-resistant opportunistic and nosocomial pathogens. Mechanistically, the mushroom extract enhanced the production of Reactive Oxygen Species (ROS) inside the targeted bacteria, causing alterations in membrane potential, damage to the cellular membrane and further release of intracellular DNA, destined to cell death. Moreover, the methanolic extract reported the eradication of pre-existing biofilms from the urinary catheter surface, hinting towards its future application in the related field. To summarize, Pleurotus platypus methanolic extract could be an excellent alternative antibacterial and antibiofilm therapeutic candidate for the effective management of Staphylococcus infections with improved outcome.
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Affiliation(s)
| | - Arghya Naskar
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, 700019, Kolkata, India
| | - Krishnendu Acharya
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, 700019, Kolkata, India.
| | - Supratim Mandal
- Department of Microbiology, University of Kalyani, Kalyani, 741235, West Bengal, India.
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Dupré R, Baillif S, Lotte R, Ruimy R, Lagier J, Berrouane Y, Gawdat T, Fendri M, Martel A. Is topical antibiotic use necessary to prevent surgical site infection following oculoplastic surgery? Graefes Arch Clin Exp Ophthalmol 2024; 262:3331-3343. [PMID: 38643423 DOI: 10.1007/s00417-024-06489-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 04/01/2024] [Accepted: 04/09/2024] [Indexed: 04/22/2024] Open
Abstract
PURPOSE To assess whether oculoplastic surgeries can be performed without any topical and systemic antibiotics, in a "100% antibiotic free" fashion. METHOD We conducted a multicenter retrospective study between November 2017 and December 2022. Patients who underwent an oculoplastic procedure were screened. Patients who received preoperative or postoperative systemic antibiotics were excluded. Intraoperative IV antibiotics were allowed. Patients were divided into two groups: those who were treated with local antibiotics ointments (LATB group) and those who were treated without local antibiotics ointments (LATB free group) postoperatively. The primary outcome was the incidence of surgical site infections (SSI). The relationship between the use of local antibiotics and the occurrence of SSI was assessed using Fisher's exact test. The alpha risk was set to 5% and two-tailed tests were used. RESULTS Among the 947 procedures included, 617 were included in the LATB group and 330 in the LATB free group. 853 and 80 procedures were classified Altemeier class 1 (clean) and class 2 (clean-contaminated) surgeries, respectively. Overall, 310 (32.73%) procedures were performed without any systemic nor topical antibiotics (100% antibiotic free fashion). SSI occured in four (4/617; 0.65%) and five (5/330; 1.52%) procedures in the LATB and LATB free group respectively, without any statistical difference between the groups (p = 0.290). A subgroup analysis was carried out by excluding the procedures performed under prophylactic intraoperative intravenous antibiotics and did not reveal any statistical difference between the two groups (p = 0.144). All SSI patients were treated with systemic antibiotics with favorable outcomes. Postoperative wound dehiscence was the only risk factor associated with postoperative SSI (p = 0.002). CONCLUSION This study suggests that performing a "100% antibiotic free" oculoplastic surgery without systemic and topical antibiotics is reasonable in Altemeier class 1 and class 2 procedures.
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Affiliation(s)
- Robin Dupré
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Stéphanie Baillif
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Romain Lotte
- Department of Bacteriology, University Hospital of Nice, Nice, France
| | - Raymond Ruimy
- Department of Bacteriology, University Hospital of Nice, Nice, France
| | - Jacques Lagier
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Yasmina Berrouane
- Infection Prevention and Control Department, Cimiez Hospital, University Hospital of Nice, Nice, France
| | - Tamer Gawdat
- Ophthalmology department, Kasr Al Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mehdi Fendri
- Ophtalmology department, Private activity at Taoufik Hospital Group, Tunis, Tunisia
| | - Arnaud Martel
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France.
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Georgescu AM, Corbu VM, Csutak O. Molecular Basis of Yeasts Antimicrobial Activity-Developing Innovative Strategies for Biomedicine and Biocontrol. Curr Issues Mol Biol 2024; 46:4721-4750. [PMID: 38785553 PMCID: PMC11119588 DOI: 10.3390/cimb46050285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/28/2024] [Accepted: 05/11/2024] [Indexed: 05/25/2024] Open
Abstract
In the context of the growing concern regarding the appearance and spread of emerging pathogens with high resistance to chemically synthetized biocides, the development of new agents for crops and human protection has become an emergency. In this context, the yeasts present a huge potential as eco-friendly agents due to their widespread nature in various habitats and to their wide range of antagonistic mechanisms. The present review focuses on some of the major yeast antimicrobial mechanisms, their molecular basis and practical applications in biocontrol and biomedicine. The synthesis of killer toxins, encoded by dsRNA virus-like particles, dsDNA plasmids or chromosomal genes, is encountered in a wide range of yeast species from nature and industry and can affect the development of phytopathogenic fungi and other yeast strains, as well as human pathogenic bacteria. The group of the "red yeasts" is gaining more interest over the last years, not only as natural producers of carotenoids and rhodotorulic acid with active role in cell protection against the oxidative stress, but also due to their ability to inhibit the growth of pathogenic yeasts, fungi and bacteria using these compounds and the mechanism of competition for nutritive substrate. Finally, the biosurfactants produced by yeasts characterized by high stability, specificity and biodegrability have proven abilities to inhibit phytopathogenic fungi growth and mycelia formation and to act as efficient antibacterial and antibiofilm formation agents for biomedicine. In conclusion, the antimicrobial activity of yeasts represents a direction of research with numerous possibilities of bioeconomic valorization as innovative strategies to combat pathogenic microorganisms.
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Affiliation(s)
- Ana-Maria Georgescu
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
| | - Viorica Maria Corbu
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
- Research Institute of University of Bucharest (ICUB), University of Bucharest, B.P. Hasdeu Street 7, 050568 Bucharest, Romania
| | - Ortansa Csutak
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
- Research Institute of University of Bucharest (ICUB), University of Bucharest, B.P. Hasdeu Street 7, 050568 Bucharest, Romania
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Sereti F, Alexandri M, Papadaki A, Papapostolou H, Kopsahelis N. Carotenoids production by Rhodosporidium paludigenum yeasts: Characterization of chemical composition, antioxidant and antimicrobial properties. J Biotechnol 2024; 386:52-63. [PMID: 38548021 DOI: 10.1016/j.jbiotec.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/07/2024]
Abstract
The high market potential imposed by natural carotenoids has turned the scientific interest in search for new strains, capable of synthesizing a wide spectrum of these pigments. In this study, Rhodosporidium paludigenum NCYC 2663 and 2664 were investigated for carotenoids production and lipid accumulation utilizing different carbon sources (glucose, fructose, sucrose, mixture of glucose: galactose). Strain R. paludigenum 2663 produced the highest total carotenoids titer (2.21 mg/L) when cultivated on sucrose, together with 4 g/L lipids (30% w/w content) and 7 g/L exopolysaccharides. In the case of R. paludigenum 2664, glucose favored the production of 2.93 mg/L total carotenoids and 1.57 g/L lipids (31.8% w/w content). Analysis of the chemical profile during fermentation revealed that β-carotene was the prominent carotenoid. Strain 2663 co-produced γ-carotene, torulene and torularhodin in lower amounts, whereas 2664 synthesized almost exclusively β-carotene. The produced lipids from strain 2663 were rich in oleic acid, while the presence of linoleic acid was also detected in the lipoic fraction from strain 2664. The obtained carotenoid extracts exhibited antioxidant (IC50 0.14 mg/mL) and high antimicrobial activity, against common bacterial and fungal pathogenic strains. The results of this study are promising for the utilization of biotechnologically produced carotenoids in food applications.
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Affiliation(s)
- Fani Sereti
- Department of Food Science and Technology, Ionian University, Argostoli, Kefalonia 28100, Greece
| | - Maria Alexandri
- Department of Food Science and Technology, Ionian University, Argostoli, Kefalonia 28100, Greece
| | - Aikaterini Papadaki
- Department of Food Science and Technology, Ionian University, Argostoli, Kefalonia 28100, Greece
| | - Harris Papapostolou
- Department of Food Science and Technology, Ionian University, Argostoli, Kefalonia 28100, Greece
| | - Nikolaos Kopsahelis
- Department of Food Science and Technology, Ionian University, Argostoli, Kefalonia 28100, Greece.
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5
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Giani M, Pire C, Martínez-Espinosa RM. Bacterioruberin: Biosynthesis, Antioxidant Activity, and Therapeutic Applications in Cancer and Immune Pathologies. Mar Drugs 2024; 22:167. [PMID: 38667784 PMCID: PMC11051356 DOI: 10.3390/md22040167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/02/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Halophilic archaea, also termed haloarchaea, are a group of moderate and extreme halophilic microorganisms that constitute the major microbial populations in hypersaline environments. In these ecosystems, mainly aquatic, haloarchaea are constantly exposed to ionic and oxidative stress due to saturated salt concentrations and high incidences of UV radiation (mainly in summer). To survive under these harsh conditions, haloarchaea have developed molecular adaptations including hyperpigmentation. Regarding pigmentation, haloarchaeal species mainly synthesise the rare C50 carotenoid called bacterioruberin (BR) and its derivatives, monoanhydrobacterioruberin and bisanhydrobacterioruberin. Due to their colours and extraordinary antioxidant properties, BR and its derivatives have been the aim of research in several research groups all over the world during the last decade. This review aims to summarise the most relevant characteristics of BR and its derivatives as well as describe their reported antitumoral, immunomodulatory, and antioxidant biological activities. Based on their biological activities, these carotenoids can be considered promising natural biomolecules that could be used as tools to design new strategies and/or pharmaceutical formulas to fight against cancer, promote immunomodulation, or preserve skin health, among other potential uses.
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Affiliation(s)
- Micaela Giani
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Ap. 99, E-03080 Alicante, Spain; (M.G.); (C.P.)
| | - Carmen Pire
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Ap. 99, E-03080 Alicante, Spain; (M.G.); (C.P.)
- Biochemistry and Molecular Biology and Edaphology and Agricultural Chemistry Department, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Rosa María Martínez-Espinosa
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Ap. 99, E-03080 Alicante, Spain; (M.G.); (C.P.)
- Biochemistry and Molecular Biology and Edaphology and Agricultural Chemistry Department, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
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Tuytschaevers S, Aden L, Greene Z, Nixon C, Shaw W, Hatch D, Kumar G, Miranda RR, Hudson AO. Isolation, whole-genome sequencing, and annotation of two antibiotic-producing and antibiotic-resistant bacteria, Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838, collected from the environment. PLoS One 2024; 19:e0293943. [PMID: 38412159 PMCID: PMC10898753 DOI: 10.1371/journal.pone.0293943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/22/2023] [Indexed: 02/29/2024] Open
Abstract
Antimicrobial resistance (AMR) is a global threat to human health since infections caused by antimicrobial-resistant bacteria are life-threatening conditions with minimal treatment options. Bacteria become resistant when they develop the ability to overcome the compounds that are meant to kill them, i.e., antibiotics. The increasing number of resistant pathogens worldwide is contrasted by the slow progress in the discovery and production of new antibiotics. About 700,000 global deaths per year are estimated as a result of drug-resistant infections, which could escalate to nearly 10 million by 2050 if we fail to address the AMR challenge. In this study, we collected and isolated bacteria from the environment to screen for antibiotic resistance. We identified several bacteria that showed resistance to multiple clinically relevant antibiotics when tested in antibiotic susceptibility disk assays. We also found that two strains, identified as Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838 via whole genome sequencing and annotation, produce bactericidal compounds against both Gram-positive and Gram-negative bacteria in disc-diffusion inhibitory assays. We mined the two strains' whole-genome sequences to gain more information and insights into the antibiotic resistance and production by these bacteria. Subsequently, we aim to isolate, identify, and further characterize the novel antibiotic compounds detected in our assays and bioinformatics analysis.
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Affiliation(s)
- Serena Tuytschaevers
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Leila Aden
- Rochester Prep High School, Rochester, New York, United States of America
| | - Zacchaeus Greene
- Rochester Prep High School, Rochester, New York, United States of America
| | - Chanei Nixon
- Rochester Prep High School, Rochester, New York, United States of America
| | - Wade Shaw
- Rochester Prep High School, Rochester, New York, United States of America
| | - Dillan Hatch
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Girish Kumar
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Renata Rezende Miranda
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, United States of America
| | - André O. Hudson
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
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de Oliveira Filho JG, Bertolo MRV, Fernandes SS, Lemes AC, da Cruz Silva G, Junior SB, de Azeredo HMC, Mattoso LHC, Egea MB. Intelligent and active biodegradable biopolymeric films containing carotenoids. Food Chem 2024; 434:137454. [PMID: 37716153 DOI: 10.1016/j.foodchem.2023.137454] [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: 02/23/2023] [Revised: 06/30/2023] [Accepted: 09/08/2023] [Indexed: 09/18/2023]
Abstract
There is growing interest in the use of natural bioactive compounds for the development of new bio-based materials for intelligent and active food packaging applications. Several beneficial effects have been associated with the antioxidant and antimicrobial potentials of carotenoid compounds. In addition, carotenoids are sensitive to pH changes and oxidation reactions, which make them useful bioindicators of food deterioration. This review summarizes the current research on the application of carotenoids as novel intelligent and active biodegradable food packaging materials. Carotenoids recovered from food processing by-products can be used in the development of active food packaging materials due to their antioxidant properties. They help maintain the stability of lipid-rich foods, such as vegetable oils. Additionally, when incorporated into films, carotenoids can monitor food oxidation, providing intelligent functionalities.
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Affiliation(s)
| | - Mirella Romanelli Vicente Bertolo
- São Carlos Institute of Chemistry (IQSC), University of São Paulo (USP), Av. Trabalhador São-carlense, 400, CP-780, 13560-970 São Carlos, São Paulo, Brazil.
| | - Sibele Santos Fernandes
- Federal University of Rio Grande, School of Chemistry and Food, Av Italy km 8, Carreiros 96203-900, Rio Grande, Brazil
| | - Ailton Cesar Lemes
- Federal University of Rio de Janeiro (UFRJ), School of Chemistry, Department of Biochemical Engineering, Av. Athos da Silveira Ramos, 149, 21941-909 Rio de Janeiro, Rio de Janeiro, Brazil.
| | | | - Stanislau Bogusz Junior
- São Carlos Institute of Chemistry (IQSC), University of São Paulo (USP), Av. Trabalhador São-carlense, 400, CP-780, 13560-970 São Carlos, São Paulo, Brazil.
| | | | | | - Mariana Buranelo Egea
- Goiano Federal Institute of Education, Science and Technology, Campus Rio Verde, Rio Verde, Goiás, Brazil.
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Lane DM, Valentine DL, Peng X. Genomic analysis of the marine yeast Rhodotorula sphaerocarpa ETNP2018 reveals adaptation to the open ocean. BMC Genomics 2023; 24:695. [PMID: 37986036 PMCID: PMC10662464 DOI: 10.1186/s12864-023-09791-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Despite a rising interest in the diversity and ecology of fungi in marine environments, there are few published genomes of fungi isolated from the ocean. The basidiomycetous yeast (unicellular fungus) genus Rhodotorula are prevalent and abundant in the open ocean, and they have been isolated from a wide range of other environments. Many of these environments are nutrient poor, such as the Antarctica and the Atacama deserts, raising the question as to how Rhodotorula yeasts may have adapted their metabolic strategies to optimize survival under low nutrient conditions. In order to understand their adaptive strategies in the ocean, the genome of R. sphaerocarpa ETNP2018 was compared to that of fourteen representative Rhodotorula yeasts, isolated from a variety of environments. RESULTS Rhodotorula sphaerocarpa ETNP2018, a strain isolated from the oligotrophic part of the eastern tropical North Pacific (ETNP) oxygen minimum zone (OMZ), hosts the smallest of the fifteen genomes and yet the number of protein-coding genes it possesses is on par with the other strains. Its genome exhibits a distinct reduction in genes dedicated to Major Facilitator Superfamily transporters as well as biosynthetic enzymes. However, its core metabolic pathways are fully conserved. Our research indicates that the selective pressures of the ETNP OMZ favor a streamlined genome with reduced overall biosynthetic potential balanced by a stable set of core metabolisms and an expansion of mechanisms for nutrient acquisition. CONCLUSIONS In summary, this study offers insights into the adaptation of fungi to the oligotrophic ocean and provides valuable information for understanding the ecological roles of fungi in the ocean.
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Affiliation(s)
- Dylan M Lane
- School of Earth, Ocean, and Environment, University of South Carolina, Columbia, SC, USA
| | - David L Valentine
- Marine Science Institute, University of California, Santa Barbara, CA, USA
- Department of Earth Science, University of California, Santa Barbara, CA, USA
| | - Xuefeng Peng
- School of Earth, Ocean, and Environment, University of South Carolina, Columbia, SC, USA.
- Marine Science Institute, University of California, Santa Barbara, CA, USA.
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Sansupa C, Suphaphimol N, Nonthijun P, Ronsuek T, Yimklan S, Semakul N, Khrueraya T, Suwannarach N, Purahong W, Disayathanoowat T. Life on the wall: the diversity and activity of microbes on 13th - century AD. Lan Na mural painting. Front Microbiol 2023; 14:1220901. [PMID: 37779706 PMCID: PMC10540211 DOI: 10.3389/fmicb.2023.1220901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/31/2023] [Indexed: 10/03/2023] Open
Abstract
Diverse microorganisms from the three domains of life (Archaea, Bacteria, and Eukaryota) cause deterioration in mural paintings worldwide; however, few studies have simultaneously targeted these three domains. This study aims to survey the microbiome and its potential for biodeterioration on unpreserved Lan Na mural paintings in Sean Khan temple, Chiang Mai, Thailand. The overview of the archaeal, bacterial, and fungal communities was reported by Illumina sequencing, whereas the potential for deterioration was revealed by culturable techniques and a literature search. The abundant microbes reported in this study were also found in other ancient mural paintings worldwide. Halococcus, a salt-tolerant archaeon, as well as the eubacterial genus Crossiella dominated the prokaryotic community. On the other hand, the main fungal group was the genus Candida (Ascomycota). However, a low number of fungi and bacteria were isolated. Most of the isolates showed the ability to survive in the drought conditions of mural paintings but could not perform discoloration activities. The deterioration activity mainly affected calcium compounds, which are the main components of painting substrates. Aspergillus and several bacterial isolates could dissolve calcium compounds, but only Trichaptum species could induce crystal formation. These results suggest that deterioration of painting substrate should be taken into consideration in addition to deterioration of color in mural paintings. For the Lan Na painting in Sean Khan temple, the plaster is the prime target for biodeterioration, and thus we suggest that the preservation effort should focus on this component of the mural painting.
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Affiliation(s)
- Chakriya Sansupa
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Nattaphon Suphaphimol
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Paradha Nonthijun
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Teewararat Ronsuek
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Saranphong Yimklan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Natthawat Semakul
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | | | - Nakarin Suwannarach
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai, Thailand
| | - Witoon Purahong
- Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Halle (Saale), Germany
| | - Terd Disayathanoowat
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai, Thailand
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10
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Influence of olive mill waste phenolic compounds levels on carotenoid production by Rhodotorula spp. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Investigation of Morchella esculenta and Morchella conica for their antibacterial potential against methicillin-susceptible Staphylococcus aureus, methicillin-resistant Staphylococcus aureus and Streptococcus pyogenes. Arch Microbiol 2022; 204:391. [PMID: 35699800 DOI: 10.1007/s00203-022-03003-8] [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: 03/09/2022] [Accepted: 05/20/2022] [Indexed: 11/02/2022]
Abstract
Antimicrobial resistance is an alarming problem, especially due to emergence of methicillin-resistance Staphylococcus aureus (MRSA). World Health Organization (WHO) has already listed MRSA as a top priority pathogen for the development of novel antibacterial agents. Presently, different therapeutic approaches against bacterial infections are in practice which includes targeting bacterial virulence factors, bacteriophage therapy, and manipulation of the microbiome. Natural products have been efficiently used for centuries to combat bacterial infections. Morchella is a natural fungal product which has been reported to possess broad-spectrum biological activities against bacterial infections. Hence, this study was aimed to evaluate the antibacterial efficacy of two macro-fungi against S. aureus, MRSA, and Streptococcus pyogenes (S. pyogenes). The antibacterial potential of both fungal extracts (Morchella esculenta and Morchella conica) was evaluated using disk diffusion and standard broth microdilution methods. The chemical compounds of both fungi were investigated using ultra-performance liquid chromatography mass spectroscopy (UPLC-MS) analysis. All fungal extracts inhibited growth of tested bacteria with inhibitory zone ranging from 10.66 ± 0.3 to 21.00 ± 1.5 mm. The minimum inhibitory concentration (MIC) of tested bacterial growth ranged from 03.33 to 16.0 mg/ml. It was noteworthy that Morchella extracts prevented S. aureus growth in a bactericidal manner with minimal bactericidal concentration (MBC) of 8-16 mg/ml. The extracts were also more effective against MRSA than currently available antibiotics. In conclusion, the growth inhibition of tested bacteria by fungal extracts revealed their potential as antibacterial agents and their compounds may be used as drug candidates.
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Gea-Botella S, Moreno-Chamba B, de la Casa L, Salazar-Bermeo J, Martí N, Martínez-Madrid MC, Valero M, Saura D. Carotenoids from Persimmon ( Diospyros kaki Thunb.) Byproducts Exert Photoprotective, Antioxidative and Microbial Anti-Adhesive Effects on HaCaT. Pharmaceutics 2021; 13:1898. [PMID: 34834313 PMCID: PMC8618857 DOI: 10.3390/pharmaceutics13111898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/01/2021] [Accepted: 11/04/2021] [Indexed: 11/25/2022] Open
Abstract
Persimmon (Diospyros kaki Thunb.) fruits are a remarkable source of carotenoids, which have shown protective effects against UV radiation in bacteria, fungi, algae, and plants. The aim of this study was to analyze the photoprotection provided by an acetone extract, rich in carotenoids and obtained from byproducts derived from the persimmon juice industry, against UV-induced cell death in the keratinocyte HaCaT cell line. For this purpose, the cytotoxicity and phototoxicity of carotenoid extract, as well as its intracellular reactive oxygen species (ROS) scavenging and anti-adhesive activities towards HaCaT cells, were evaluated. The in vitro permeation test provided information about the permeability of the carotenoid extract. Persimmon extracts, rich in carotenoids (PEC), were absorbed by HaCaT keratinocyte cells, which reduced the UV-induced intracellular ROS production in treated cells. Thus, PEC exerted a photoprotective and regenerative effect on UV-irradiated HaCaT cells, and this protection was UV dose-dependent. No cytotoxic effect was observed in HaCaT cultures at the concentration tested. PEC treatment also stimulated the adhesion capacity of skin microbiome to HaCaT cells, while exhibiting a significant anti-adhesive activity against all tested pathogens. In conclusion, PEC showed potential for use as a functional ingredient in skin-care products.
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Affiliation(s)
- Sara Gea-Botella
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | - Bryan Moreno-Chamba
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | - Laura de la Casa
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | - Julio Salazar-Bermeo
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | - Nuria Martí
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | | | - Manuel Valero
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
| | - Domingo Saura
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, 03202 Alicante, Spain; (S.G.-B.); (B.M.-C.); (L.d.l.C.); (J.S.-B.); (N.M.); (D.S.)
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