1
|
Mahmoud AMA, Ali MHH, Abdelkarim MS, Al-Afify ADG. Chemical, biochemical, and bioactivity studies on some soda lakes, Wadi El-Natrun, Egypt. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:436. [PMID: 38589724 PMCID: PMC11001755 DOI: 10.1007/s10661-024-12573-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/23/2024] [Indexed: 04/10/2024]
Abstract
Wadi El-Natrun is one of the most observable geomorphological features in the North-Western Desert of Egypt; it contains several old saline and saline soda lakes. This study investigates physicochemical and biochemical characteristics and estimates the total phenolic content (TPC), total flavonoid content (TVC), and bioactivities of sediment, cyanobacteria, and brine shrimp (Artemia salina) in soda lakes, i.e., El-Hamra Lake 1 (H1) and El-Hamra Lake 2 (H2). These soda lakes are unique extreme ecosystems characterized by high pH (> 9.3), high alkalinity, and salinity. Some extremophilic microorganisms are hosted in this ecosystem. The results revealed that the chemical water type of studied lakes is soda-saline lakes according to the calculated percentage sequence of major cations and anions. Sodium ranked first among major cations with an abundance ratio of e% 58, while chloride came first among anions with an abundance ratio of e% 71, and bicarbonate and carbonate occupied the last rank with an abundance of 6%. The biochemical investigations showed that TPC and TVC are present in concern contents of sediment, cyanobacteria, and brine shrimp (A. salina) which contribute 89% of antioxidant capacity and antimicrobial activities. Thus, this study helps better understand the chemical and biochemical adaptations in soda lake ecosystems and explores natural sources with potential applications in antioxidant-rich products and environmental conservation efforts.
Collapse
Affiliation(s)
| | - Mohamed H H Ali
- National Institute of Oceanography and Fisheries, Cairo, Egypt.
| | | | | |
Collapse
|
2
|
Brindhadevi K, Kim PT, AlSalhi MS, Elkader OHA, T N, Lee J, Bharathi D. Deciphering the photocatalytic degradation of polyaromatic hydrocarbons (PAHs) using hausmannite (Mn 3O 4) nanoparticles and their efficacy against bacterial biofilm. CHEMOSPHERE 2024; 349:140961. [PMID: 38104733 DOI: 10.1016/j.chemosphere.2023.140961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 10/16/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Polyaromatic hydrocarbons (PAHs) are life-threatening organic pollutants that severely threaten ecosystems worldwide due to their poisonous qualities, cancer-causing properties, and mutation-causing qualities. Water and soil together form a critical component of the ecosystem that supports all life. Due to the pollutants that are being disposed of in them, their characteristics have changed, and their toxicity has increased. The goal of this study was to investigate the ability of hausmannite nanoparticles to degrade fluorene from soil and water. Using the chemical method, hausmannite nanoparticles were synthesized and further characterization was performed using UV-Vis, FTIR, DLS, XRD, and SEM-EDAX. Hausmannite significantly degraded fluorene using the batch adsorption method. The degradation was also confirmed by performing reactive kinetics using Freundlich's isotherm model and Langmuir's pseudo-second-order model of soil and water. In addition to the degradation efficacy, hausmannite was also proved to inhibit biofilm formation by Pseudomonas aeruginosa. The findings of the experiments confirmed the presence of hausmannite nanoparticles, as well as their physical properties, chemical properties, degradation properties, and parameters of the kinetic study. As a result, synthesized nanoparticles have been extensively utilized as a low-cost option for removing pollutants and microbial biofilm.
Collapse
Affiliation(s)
- Kathirvel Brindhadevi
- Institute of Research and Development, Duy Tan University, Da Nang ,Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam.
| | - P T Kim
- Institute of Research and Development, Duy Tan University, Da Nang ,Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Omar H Abd Elkader
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Naveena T
- Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, India
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Devaraj Bharathi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| |
Collapse
|
3
|
Brindhadevi K, Hoang Le Q, Salmen SH, Karuppusamy I, Pugazhendhi A. In vitro biofilm inhibition efficacy of Aerva lanata flower extract against Gram negative and Gram-positive biofilm forming bacteria and toxicity analysis using Artemia salina. ENVIRONMENTAL RESEARCH 2023; 238:117118. [PMID: 37704075 DOI: 10.1016/j.envres.2023.117118] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/24/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
A biofilm consists of Gram positive and Gram-negative bacteria enclosed in a matrix. Industrial biofouling is caused by biofilms, which can exhibit antimicrobial resistance during infections. Many biofilm studies find that nearly all biofilm communities consist of Gram positive and Gram-negative bacteria. It is therefore necessary to better understand the conserved themes in biofilm formation to develop therapeutics based on biofilm formation. Plant extracts can effectively combat pathogenic bacterial biofilms. This study evaluated the antibacterial and antibiofilm activity of Aerva lanata flower extract against Staphylococcus aureus and Pseudomonas aeruginosa. Methanol extract of dried A. lanata flower was tested against S. aureus and P. aeruginosa to determine the antibacterial activity (10, 25, 50, 75, 100 μg/mL) resulted in a maximum of 0.5-1 log reduction and 2 log reduction in comparison to the control or untreated bacterial cells respectively. A. lanata showed maximum biofilm inhibition up to 1.5-fold and 1-fold against P. aeruginosa and S. aureus. Light microscopic analysis of biofilm treated with A. lanata extract showed efficient distortion of the biofilm matrix. Further, the in vivo analysis of A. lanata in the Artemia salina brine shrimp model showed >50% survival and thus proving the efficacy of A. lanata extract in rescuing the brine shrimps against P. aeruginosa and S. aureus infection.
Collapse
Affiliation(s)
- Kathirvel Brindhadevi
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam.
| | - Quynh Hoang Le
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Saleh H Salmen
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Indira Karuppusamy
- Research Center for Strategic Materials, Corrosion Resistant Steel Group, National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Arivalagan Pugazhendhi
- School of Engineering, Lebanese American University, Byblos, Lebanon; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103, Tamil Nadu, India.
| |
Collapse
|
4
|
Kim D, Crippen TL, Jordan HR, Tomberlin JK. Quorum sensing gene regulation in Staphylococcus epidermidis reduces the attraction of Aedes aegypti (L.) (Diptera: Culicidae). Front Microbiol 2023; 14:1208241. [PMID: 37426032 PMCID: PMC10324375 DOI: 10.3389/fmicb.2023.1208241] [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: 04/18/2023] [Accepted: 05/22/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Identifying mechanisms regulating mosquito attraction to hosts is key to suppressing pathogen transmission. Historically, the ecology of the host microbial community and its influence on mosquito attraction, specifically, whether bacterial communication through quorum sensing (QS) modulates VOC production that affects mosquito behavior have not been extensively considered. Methods Behavioral choice assays were applied along with volatile collection, followed by GC-MS and RNA transcriptome analyses of bacteria with and without a quorum-sensing inhibitor, furanone C-30. Results Utilizing the quorum-sensing inhibitor on a skin-inhabiting bacterium, Staphylococcus epidermidis, we disrupted its interkingdom communication with adult Aedes aegypti and mitigated their attraction to a blood-meal by 55.1%. Discussion One potential mechanism suppressing mosquito attraction could be the reduction (31.6% in our study) of bacterial volatiles and their associated concentrations by shifting S. epidermidis metabolic (12 of 29 up regulated genes) and stress (5 of 36 down regulated genes) responses. Manipulating the quorum-sensing pathways could serve as a mechanism to reduce mosquito attraction to a host. Such manipulations could be developed into novel control methods for pathogen-transmitting mosquitoes and other arthropods.
Collapse
Affiliation(s)
- Dongmin Kim
- Department of Entomology, Texas A&M University, College Station, TX, United States
| | - Tawni L. Crippen
- Southern Plains Agricultural Research Center, Agricultural Research Service, US Department of Agriculture, College Station, TX, United States
| | - Heather R. Jordan
- Department of Biological Sciences, Mississippi State University, Starkville, MS, United States
| | - Jeffery K. Tomberlin
- Department of Entomology, Texas A&M University, College Station, TX, United States
| |
Collapse
|
5
|
Shanmuganathan R, Brindhadevi K, Al-Ansari MM, Al-Humaid L, Barathi S, Lee J. In vitro investigation of silver nanoparticles synthesized using Gracilaria veruccosa - A seaweed against multidrug resistant Staphylococcusaureus. ENVIRONMENTAL RESEARCH 2023; 227:115782. [PMID: 36990196 DOI: 10.1016/j.envres.2023.115782] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 03/18/2023] [Accepted: 03/25/2023] [Indexed: 05/08/2023]
Abstract
In recent years, the biosynthesis of silver (Ag) nanoparticles has attracted a great deal of interest for applications in biomedicine and bioremediation. In the present study, Gracilaria veruccosa extract was used to synthesize Ag nanoparticles for investigating their antibacterial and antibiofilm potentials. The color shift from olive green to brown indicated the synthesis of AgNPs by plasma resonance at 411 nm. Physical and chemical characterization revealed that AgNPs of 20-25 nm sizes were synthesized. Detecting functional groups, such as carboxylic acids and alkenes, suggested that the bioactive molecules in the G. veruccosa extract assisted the synthesis of AgNPs. X-ray diffraction verified the s purity and crystallinity of the AgNPs with an average diameter of 25 nm, while DLS analysis showed a negative surface charge of -22.5 mV. Moreover, AgNPs were tested in vitro for antibacterial and antibiofilm efficacies against S. aureus. The minimum inhibitory concentration (MIC) of AgNPs against S. aureus was 3.8 μg/mL. Light and fluorescence microscopy proved the potential of AgNPs to disrupt the mature biofilm of S. aureus. Therefore, the present report has deciphered the potential of G. veruccosafor the synthesis of AgNPs and targeted the pathogenic bacteria S. aureus.
Collapse
Affiliation(s)
| | - Kathirvel Brindhadevi
- Center for Transdisciplinary Research (CFTR), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
| | - Mysoon M Al-Ansari
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh,11451, Saudi Arabia
| | - Latifah Al-Humaid
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh,11451, Saudi Arabia
| | - Selvaraj Barathi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| |
Collapse
|
6
|
Felix L, Whitely C, Tharmalingam N, Mishra B, Vera-Gonzalez N, Mylonakis E, Shukla A, Fuchs BB. Auranofin coated catheters inhibit bacterial and fungal biofilms in a murine subcutaneous model. Front Cell Infect Microbiol 2023; 13:1135942. [PMID: 37313344 PMCID: PMC10258325 DOI: 10.3389/fcimb.2023.1135942] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 04/24/2023] [Indexed: 06/15/2023] Open
Abstract
Microbe entry through catheter ports can lead to biofilm accumulation and complications from catheter-related bloodstream infection and ultimately require antimicrobial treatment and catheter replacement. Although strides have been made with microbial prevention by applying standardized antiseptic techniques during catheter implantation, both bacterial and fungal microbes can present health risks to already sick individuals. To reduce microbial adhesion, murine and human catheters were coated with polyurethane and auranofin using a dip coating method and compared to non-coated materials. Upon passage of fluid through the coated material in vitro, flow dynamics were not impacted. The unique antimicrobial properties of the coating material auranofin has shown inhibitory activity against bacteria such as Staphylococcus aureus and fungi such as Candida albicans. Auranofin coating on catheters at 10mg/mL reduced C. albicans accumulation in vitro from 2.0 x 108 to 7.8 x 105 CFU for mouse catheters and from 1.6 x 107 to 2.8 x 106 for human catheters, showing an impact to mature biofilms. Assessment of a dual microbe biofilm on auranofin-coated catheters resulted in a 2-log reduction in S. aureus and a 3-log reduction in C. albicans compared to uncoated catheters. In vivo assessment in a murine subcutaneous model demonstrated that catheters coated with 10 mg/mL auranofin reduced independent S. aureus and C. albicans accumulation by 4-log and 1-log, respectively, compared to non-coated catheters. In conclusion, the auranofin-coated catheters demonstrate proficiency at inhibiting multiple pathogens by decreasing S. aureus and C. albicans biofilm accumulation.
Collapse
Affiliation(s)
- LewisOscar Felix
- Division of Infectious Diseases, Rhode Island Hospital, The Miriam Hospital, Alpert Medical School and Brown University, Providence, RI, United States
| | - Cutler Whitely
- Center for Biomedical Engineering, School of Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, RI, United States
| | - Nagendran Tharmalingam
- Division of Infectious Diseases, Rhode Island Hospital, The Miriam Hospital, Alpert Medical School and Brown University, Providence, RI, United States
| | - Biswajit Mishra
- Division of Infectious Diseases, Rhode Island Hospital, The Miriam Hospital, Alpert Medical School and Brown University, Providence, RI, United States
| | - Noel Vera-Gonzalez
- Center for Biomedical Engineering, School of Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, RI, United States
| | - Eleftherios Mylonakis
- Division of Infectious Diseases, Rhode Island Hospital, The Miriam Hospital, Alpert Medical School and Brown University, Providence, RI, United States
| | - Anita Shukla
- Center for Biomedical Engineering, School of Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, RI, United States
| | - Beth Burgwyn Fuchs
- Division of Infectious Diseases, Rhode Island Hospital, The Miriam Hospital, Alpert Medical School and Brown University, Providence, RI, United States
| |
Collapse
|
7
|
Cebrero-Cangueiro T, Labrador-Herrera G, Carretero-Ledesma M, Herrera-Espejo S, Álvarez-Marín R, Pachón J, Cisneros JM, Pachón-Ibáñez ME. IgM-enriched immunoglobulin improves colistin efficacy in a pneumonia model by Pseudomonas aeruginosa. Life Sci Alliance 2022; 5:5/10/e202101349. [PMID: 35728946 PMCID: PMC9214247 DOI: 10.26508/lsa.202101349] [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: 12/23/2021] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 11/24/2022] Open
Abstract
Using polyclonal IgM-enriched immunoglobulin (IgM-IG) as adjuvant therapy to colistin appears useful in the treatment of pneumonia caused by multidrug-resistant strains of P. aeruginosa. We evaluated the efficacy of ceftazidime or colistin in combination with polyclonal IgM-enriched immunoglobulin (IgM-IG), in an experimental pneumonia model (C57BL/6J male mice) using two multidrug-resistant Pseudomonas aeruginosa strains, both ceftazidime-susceptible and one colistin-resistant. Pharmacodynamically optimised antimicrobials were administered for 72 h, and intravenous IgM-IG was given as a single dose. Bacterial tissues count and the mortality were analysed. Ceftazidime was more effective than colistin for both strains. In mice infected with the colistin-susceptible strain, ceftazidime reduced the bacterial concentration in the lungs and blood (−2.42 and −3.87 log10 CFU/ml) compared with colistin (−0.55 and −1.23 log10 CFU/ml, respectively) and with the controls. Colistin plus IgM-IG reduced the bacterial lung concentrations of both colistin-susceptible and resistant strains (−2.91 and −1.73 log10 CFU/g, respectively) and the bacteraemia rate of the colistin-resistant strain (−44%). These results suggest that IgM-IG might be useful as an adjuvant to colistin in the treatment of pneumonia caused by multidrug-resistant P. aeruginosa.
Collapse
Affiliation(s)
- Tania Cebrero-Cangueiro
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain
| | - Gema Labrador-Herrera
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain
| | - Marta Carretero-Ledesma
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain
| | - Soraya Herrera-Espejo
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain
| | - Rocío Álvarez-Marín
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Madrid, Spain
| | - Jerónimo Pachón
- Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Madrid, Spain.,Department of Medicine, University of Seville, Seville, Spain
| | - José Miguel Cisneros
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain.,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Madrid, Spain
| | - María Eugenia Pachón-Ibáñez
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Seville, Spain .,Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital/CSIC/ University of Seville, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Madrid, Spain
| |
Collapse
|
8
|
Methoxyisoflavan derivative from Trigonella stellata inhibited quorum sensing and virulence factors of Pseudomonas aeruginosa. World J Microbiol Biotechnol 2022; 38:156. [PMID: 35798919 PMCID: PMC9262770 DOI: 10.1007/s11274-022-03337-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 06/10/2022] [Indexed: 11/24/2022]
Abstract
The number of deaths caused by multidrug-resistant Pseudomonas aeruginosa has risen in the recent decade. The development of quorum sensing inhibition (QSI) is a promising approach for controlling Pseudomonas infection. Therefore, this study mainly aimed to investigate how a plant-source material inhibits QSI to produce an antipathogenic effect for fighting microbial infections. The QSI effect of Trigonella stellata was assessed by using Chromobacterium violaceum ATCC 12472 reporter strain. Trigonella stellata exhibited high QSI activity, and an ethanolic extract of T. stellata was prepared for phytochemical isolation of the most active QSI compound. Nine pure compounds were isolated and identified as kaempferitrin (1), soyasaponin I (2), β-sitosterol-3-O-glucoside (3), dihydromelilotoside (4), astrasikokioside I (5), methyl dihydromelilotoside (6), (3R, 4S)-4, 2′, 4′-trihydroxy-7-methoxy-4′-O-β-d-glucopyranosylisoflavan (7), (3S, 4R)-4, 2′, 4′-trihydroxy-7-methoxyisoflavan (8, TMF), and (+)-d-pinitol (9). These compounds were screened against C. violaceum ATCC 12472, and TMF exhibited a potent QSI. The effect of TMF at sub-minimum inhibitory concentrations (MICs) was assessed against P. aeruginosa virulence factors, including biofilm, pyocyanin formation protease and hemolysin activity. TMF induced significant elimination of QS-associated virulence behavior. In addition, TMF at sub-MICs significantly reduced the relative expression of lasI, lasR, rhlI, and rhlR compared with that in untreated cells. Furthermore, molecular docking was performed to predict structural basis of the QSI activity of TMF. The study demonstrated the importance of T. stellata as a signal modulator and inhibitor of P. aeruginosa pathogenesis.
Collapse
|
9
|
Ikeda IK, Sydney EB, Sydney ACN. The potential application of
Spirulina
in dermatology. J Cosmet Dermatol 2022; 21:4205-4214. [DOI: 10.1111/jocd.14997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/31/2022] [Accepted: 04/12/2022] [Indexed: 11/27/2022]
|
10
|
Sheng Y, Narayanan M, Basha S, Elfasakhany A, Brindhadevi K, Xia C, Pugazhendhi A. In vitro and in vivo efficacy of green synthesized AgNPs against Gram negative and Gram positive bacterial pathogens. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
11
|
Narchonai G, Arutselvan C, LewisOscar F, Thajuddin N. Enhancing starch accumulation/production in Chlorococcum humicola through sulphur limitation and 2,4- D treatment for butanol production. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 28:e00528. [PMID: 32995316 PMCID: PMC7508686 DOI: 10.1016/j.btre.2020.e00528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/15/2020] [Accepted: 09/07/2020] [Indexed: 01/18/2023]
Abstract
Depleting fuel resources is a global concern worldwide due to the unstable and cost of fuel resources. Increased transportation has gradually depleted the fossil-based fuel resources leading to find a cost-effective, readily available, and renewable source. Considering these issues, various private and government organizations have focussed on producing bio-based fuels from natural sources. In this scenario, algae are a potential emerging source of feedstock or biomass for biobutanol production, which can effectively replace fossil fuels and their environmental drawbacks. The present study focussed on evaluating the potential of freshwater microalga Chlorococcum humicola isolated from temple pond as feedstock for biobutanol production using Clostridium acetobutylicum. The results indicated that C. humicola produced 846.33 μgmg-1of starch under full strength Chu10 medium. While under sulphur and phosphorus limitation, the accumulation of starch was 947.33 μg mg-1 and 766.67 μgmg-1, respectively. Also, C. humicola was exposed to different concentrations of 2,4-Dichlorophenoxyacetic acid (2,4-D). At 10μgml-1 of 2,4-D, the highest starch concentration of 989μgmg-1was achieved in C. humicola. Finally, starch in C. humicola were hydrolysed and ABE fermentation was performed using C. acetobutylicum under anaerobic condition in a 5 L automated fermenter. After 72 h of fermentation, the fermented broth is analyed in Gas Chromatography showing the fermented product containing Acetone: Butanol: Ethanol. The present study is the first report on the production of biobutanol from C. humicola isolated from Temple pond. This study emphasizes the importance of local isolates of microalgae as a third-generation substrate to produce butanol to replace fossil-based fuels.
Collapse
Affiliation(s)
- Ganesan Narchonai
- Division of Microalgal Biodiversity and Bioenergy, National Repository for Microalgae and Cyanobacteria - Freshwater, Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
| | - Chitirai Arutselvan
- Division of Microalgal Biodiversity and Bioenergy, National Repository for Microalgae and Cyanobacteria - Freshwater, Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India.,Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
| | - Felix LewisOscar
- Division of Microalgal Biodiversity and Bioenergy, National Repository for Microalgae and Cyanobacteria - Freshwater, Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India.,Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
| | - Nooruddin Thajuddin
- Division of Microalgal Biodiversity and Bioenergy, National Repository for Microalgae and Cyanobacteria - Freshwater, Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India.,Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
| |
Collapse
|
12
|
Brindhadevi K, LewisOscar F, Mylonakis E, Shanmugam S, Verma TN, Pugazhendhi A. Biofilm and Quorum sensing mediated pathogenicity in Pseudomonas aeruginosa. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
13
|
Arunkumar M, LewisOscar F, Thajuddin N, Pugazhendhi A, Nithya C. In vitro and in vivo biofilm forming Vibrio spp: A significant threat in aquaculture. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.04.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
14
|
Boriollo MFG, Marques MB, da Silva TA, da Silva JJ, Dias RA, Silva Filho THN, Melo ILR, dos Santos Dias CT, Bernardo WLDC, de Mello Silva Oliveira N, Peters VM, Höfling JF, Spolidorio DMP. Antimicrobial potential, phytochemical profile, cytotoxic and genotoxic screening of Sedum praealtum A. DC. (balsam). BMC Complement Med Ther 2020; 20:133. [PMID: 32349729 PMCID: PMC7191818 DOI: 10.1186/s12906-020-02915-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Sedum praealtum has been used for a long time in traditional medicine as an analgesic and anti-inflammatory agent. Its beneficial effects have been known since ancient times, when Latinos used it to treat sore and swollen eyes. This research evaluated the antimicrobial potential, the cytotoxic and genotoxic effects, and some chromatographic profiles of the hydroethanolic extract of leaves, stems and roots of S. praealtum. METHODS The antimicrobial activities were carried out by broth microdilution and agar diffusion. In vitro cytotoxicity was evaluated by cell cultures of Aedes albopictus and the selectivity index (SI) was estimated: SI=CI50/MIC. Genotoxic and systemic toxic effects of S. praealtum leaves were analyzed by micronucleus assay in mice bone marrow. Chromatographic profiles and mass spectra were investigated by GC-MS. RESULTS Gram-positive (B. subtilis, B. cereus, M. luteus, E. faecalis and S. aureus) and gram-negative (E. coli, E. aerogenes, S. marcescens, P. aeruginosa, P. mirabilis and S. typhimurium) bacteria exhibited MICs ranging from 12.5-50 and 0-50 mg/ml, respectively. Sedum praealtum showed no efficacy against M. tuberculosis and M. bovis. Cytotoxicity (CI50) of S. praealtum was 4.22 and 5.96 mg/ml for leaves and stems, respectively, while its roots showed no cytotoxicity. Micronucleated polychromatic erythrocytes (MNPCEs) analyzes showed no differences between treatment doses (0.5-2 g/kg) and negative control (NaCl), but the PCE/NCE ratio (polychromatic erythrocyte/normochromatic erythrocyte) showed significant differences. Phytochemical screening identified thirteen compounds in the leaves, stems and roots of S. praealtum potentially associated with their biological activities. CONCLUSIONS This research comprises a first scientific study on genotoxicity, cytotoxicity and antimicrobial effects of S. praealtum (Balsam), and it provides an initial theoretical foundation for its comprehensive use. Results showed antibacterial action of S. praealtum against gram-positive bacteria and some gram-negative species (depending on the plant anatomical part), but ineffective antimycobacterial action. However, S. praealtum leaves and stems display potential cytotoxicity, contributing to the SI < 1 values. In addition, S. praealtum leaves exhibit no clastogenic and/or aneugenic effects, but it has systemic toxicity dose-independent.
Collapse
Affiliation(s)
- Marcelo Fabiano Gomes Boriollo
- Laboratory of Microbiology and Immunology, Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas (FOP/UNICAMP), Piracicaba, SP 13414-903 Brazil
| | - Milene Bueno Marques
- Center for Research and Postgraduate Studies in Animal Science, Pathology and Animal Pharmacology Area, University of Alfenas (UNIFENAS), Alfenas, MG 37132-440 Brazil
| | - Thaísla Andrielle da Silva
- Laboratory of Microbiology and Immunology, Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas (FOP/UNICAMP), Piracicaba, SP 13414-903 Brazil
| | - Jeferson Júnior da Silva
- Laboratory of Microbiology and Immunology, Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas (FOP/UNICAMP), Piracicaba, SP 13414-903 Brazil
| | - Reigson Alves Dias
- Laboratory of Pharmacogenetics and Molecular Biology, Faculty of Medical Sciences, University of Alfenas (UNIFENAS), Alfenas, MG 37132-440 Brazil
| | - Thyago Henrique Neves Silva Filho
- Laboratory of Pharmacogenetics and Molecular Biology, Faculty of Medical Sciences, University of Alfenas (UNIFENAS), Alfenas, MG 37132-440 Brazil
| | - Isadora Letícia Ribeiro Melo
- Laboratory of Pharmacogenetics and Molecular Biology, Faculty of Medical Sciences, University of Alfenas (UNIFENAS), Alfenas, MG 37132-440 Brazil
| | - Carlos Tadeu dos Santos Dias
- Department of Exact Sciences, College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, SP 13418-900 Brazil
| | - Wagner Luís de Carvalho Bernardo
- Laboratory of Microbiology and Immunology, Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas (FOP/UNICAMP), Piracicaba, SP 13414-903 Brazil
- Laboratory of Oral Microbiology and Immunology, Department of Physiology and Oral Pathology, Araraquara School of Dentistry, São Paulo State University (FOAr/UNESP), Araraquara, SP 14801-903 Brazil
| | - Nelma de Mello Silva Oliveira
- Center for Research and Postgraduate Studies in Animal Science, Pathology and Animal Pharmacology Area, University of Alfenas (UNIFENAS), Alfenas, MG 37132-440 Brazil
| | - Vera Maria Peters
- Reproductive Biology Center, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG 36036-900 Brazil
| | - José Francisco Höfling
- Laboratory of Microbiology and Immunology, Department of Oral Diagnosis, Dental School of Piracicaba, State University of Campinas (FOP/UNICAMP), Piracicaba, SP 13414-903 Brazil
| | - Denise Madalena Palomari Spolidorio
- Laboratory of Oral Microbiology and Immunology, Department of Physiology and Oral Pathology, Araraquara School of Dentistry, São Paulo State University (FOAr/UNESP), Araraquara, SP 14801-903 Brazil
| |
Collapse
|
15
|
Karygianni L, Ren Z, Koo H, Thurnheer T. Biofilm Matrixome: Extracellular Components in Structured Microbial Communities. Trends Microbiol 2020; 28:668-681. [PMID: 32663461 DOI: 10.1016/j.tim.2020.03.016] [Citation(s) in RCA: 574] [Impact Index Per Article: 143.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/16/2020] [Accepted: 03/25/2020] [Indexed: 02/04/2023]
Abstract
Biofilms consist of microbial communities embedded in a 3D extracellular matrix. The matrix is composed of a complex array of extracellular polymeric substances (EPS) that contribute to the unique attributes of biofilm lifestyle and virulence. This ensemble of chemically and functionally diverse biomolecules is termed the 'matrixome'. The composition and mechanisms of EPS matrix formation, and its role in biofilm biology, function, and microenvironment are being revealed. This perspective article highlights recent advances about the multifaceted role of the 'matrixome' in the development, physical-chemical properties, and virulence of biofilms. We emphasize that targeting biofilm-specific conditions such as the matrixome could lead to precise and effective antibiofilm approaches. We also discuss the limited knowledge in the context of polymicrobial biofilms, and the need for more in-depth analyses of the EPS matrix in mixed communities that are associated with many human infectious diseases.
Collapse
Affiliation(s)
- L Karygianni
- Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine University of Zurich, Zurich, Switzerland
| | - Z Ren
- Department of Orthodontics, Divisions of Pediatric Dentistry and Community of Oral Health, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - H Koo
- Department of Orthodontics, Divisions of Pediatric Dentistry and Community of Oral Health, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA; Center for Innovation and Precision Dentistry, University of Pennsylvania School of Dental Medicine, School of Engineering and Applied Sciences, Philadelphia, PA, USA
| | - T Thurnheer
- Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine University of Zurich, Zurich, Switzerland.
| |
Collapse
|
16
|
Karygianni L, Attin T, Thurnheer T. Combined DNase and Proteinase Treatment Interferes with Composition and Structural Integrity of Multispecies Oral Biofilms. J Clin Med 2020; 9:jcm9040983. [PMID: 32244784 PMCID: PMC7231231 DOI: 10.3390/jcm9040983] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 12/16/2022] Open
Abstract
Modification of oral biofilms adhering to dental hard tissues could lead to new treatment approaches in cariology and periodontology. In this study the impact of DNase I and/or proteinase K on the formation of a simulated supragingival biofilm was investigated in vitro. Six-species biofilms were grown anaerobically in the presence of DNase I and proteinase K. After 64 h biofilms were either harvested and quantified by culture analysis or proceeded to staining followed by confocal laser scanning microscopy. Microbial cells were stained using DNA-dyes or fluorescent in situ hybridization. Exopolysaccharides, eDNA and exoproteins were stained with Calcofluor, anti-DNA-antibody, and SyproTM Ruby, respectively. Overall, results showed that neither DNase I nor proteinase K had an impact on total colony-forming units (CFUs) compared to the control without enzymes. However, DNase I significantly suppressed the growth of Actinomyces oris, Fusobacterium nucleatum, Streptococcus mutans, Streptococcus oralis and Candida albicans. Proteinase K treatment induced significant increase in S. mutans and S. oralis CFUs (p < 0.001), whereas C. albicans and V. dispar showed lower CFUs compared to the control. Interestingly, confocal images visualized the biofilm degradation caused by DNase I and proteinase K. Thus, enzymatic treatment should be combined with conventional antimicrobial agents aiming at both bactericidal effectiveness and biofilm dispersal.
Collapse
|
17
|
Nowicka-Krawczyk P, Mühlsteinová R, Hauer T. Detailed characterization of the Arthrospira type species separating commercially grown taxa into the new genus Limnospira (Cyanobacteria). Sci Rep 2019; 9:694. [PMID: 30679537 PMCID: PMC6345927 DOI: 10.1038/s41598-018-36831-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/27/2018] [Indexed: 12/05/2022] Open
Abstract
The genus Arthrospira has a long history of being used as a food source in different parts of the world. Its mass cultivation for production of food supplements and additives has contributed to a more detailed study of several species of this genus. In contrast, the type species of the genus (A. jenneri), has scarcely been studied. This work adopts a polyphasic approach to thoroughly investigate environmental samples of A. jenneri, whose persistent bloom was noticed in an urban reservoir in Poland, Central Europe. The obtained results were compared with strains designated as A. platensis, A. maxima, and A. fusiformis from several culture collections and other Arthrospira records from GenBank. The comparison has shown that A. jenneri differs from popular species that are massively utilized commercially with regard to its cell morphology, ultrastructure and ecology, as well as its 16S rRNA gene sequence. Based on our findings, we propose the establishment of a new genus, Limnospira, which currently encompasses three species including the massively produced L. (A.) fusiformis and L. (A.) maxima with the type species Limnospira fusiformis.
Collapse
Affiliation(s)
- Paulina Nowicka-Krawczyk
- University of Łódź, Faculty of Biology and Environmental Protection, Laboratory of Algology and Mycology, Poland, Banacha 12/16 Str, 90-237, Łódź, Poland
| | - Radka Mühlsteinová
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Tomáš Hauer
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
| |
Collapse
|