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The Application of Molecular Methods Towards an Understanding of the Role of the Vaginal Microbiome in Health and Disease. METHODS IN MICROBIOLOGY 2017. [DOI: 10.1016/bs.mim.2017.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Melo TA, Dos Santos TF, de Almeida ME, Junior LAGF, Andrade EF, Rezende RP, Marques LM, Romano CC. Inhibition of Staphylococcus aureus biofilm by Lactobacillus isolated from fine cocoa. BMC Microbiol 2016; 16:250. [PMID: 27793096 PMCID: PMC5084336 DOI: 10.1186/s12866-016-0871-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/26/2016] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Biofilm production represents an important virulence and pathogenesis factor for Staphylococcus aureus. The formation of biofilms on medical devices is a major concern in hospital environments, as they can become a constant source of infection. Probiotic bacteria, such as Lactobacillus fermentum and L. plantarum, have been found to inhibit biofilm formation; however little is known about the underlying mechanism. In this study, we tested the activity of supernatants produced by L. fermentum TCUESC01 and L. plantarum TCUESC02, isolated during the fermentation of fine cocoa, against S. aureus CCMB262 biofilm production. We measured inhibition of biofilm formation in vitro and analyzed biofilm structure by confocal and electronic microscopy. Additionally, we quantified the expression of S. aureus genes icaA and icaR involved in the synthesis of the biofilm matrix by real-time PCR. RESULTS Both Lactobacillus supernatants inhibited S. aureus growth. However, only L. fermentum TCUESC01 significantly reduced the thickness of the biofilm, from 14 μm to 2.83 μm (at 18 mg∙mL-1, 90 % of the minimum inhibitory concentration, MIC), 3.12 μm (at 14 mg∙mL-1, 70 % of the MIC), and 5.21 μm (at 10 mg∙mL-1, 50 % of the MIC). Additionally, L. fermentum TCUESC01 supernatant modulated the expression of icaA and icaR. CONCLUSIONS L. fermentum TCUESC01 reduces the formation of S. aureus biofilm under subinhibitory conditions. Inhibition of biofilm production probably depends on modulation of the ica operon.
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Affiliation(s)
- Tauá Alves Melo
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil
| | - Thalis Ferreira Dos Santos
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil
| | - Milena Evangelista de Almeida
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil
| | - Luiz Alberto Gusmão Fontes Junior
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil
| | - Ewerton Ferraz Andrade
- Multidisciplinary Institute for Health, Federal University of Bahia, Rio de Contas Street, Candeiasn 17,58 Block, Vitória da Conquista, 45029-094, Bahia State, Brazil
| | - Rachel Passos Rezende
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil
| | - Lucas Miranda Marques
- Multidisciplinary Institute for Health, Federal University of Bahia, Rio de Contas Street, Candeiasn 17,58 Block, Vitória da Conquista, 45029-094, Bahia State, Brazil
| | - Carla Cristina Romano
- Department of Biological Sciences, Santa Cruz State University, Ilhéus-Itabuna Road, km 16 Salobrinho, Ilhéus, 45662-900, Bahia State, Brazil.
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Al Kassaa I, Hober D, Hamze M, Chihib NE, Drider D. Antiviral potential of lactic acid bacteria and their bacteriocins. Probiotics Antimicrob Proteins 2016; 6:177-85. [PMID: 24880436 DOI: 10.1007/s12602-014-9162-6] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Emerging resistance to antiviral agents is a growing public health concern worldwide as it was reported for respiratory, sexually transmitted and enteric viruses. Therefore, there is a growing demand for new, unconventional antiviral agents which may serve as an alternative to the currently used drugs. Meanwhile, published literature continues shedding the light on the potency of lactic acid bacteria (LAB) and their bacteriocins as antiviral agents. Health-promoting LAB probiotics may exert their antiviral activity by (1) direct probiotic-virus interaction; (2) production of antiviral inhibitory metabolites; and/or (3) via stimulation of the immune system. The aim of this review was to highlight the antiviral activity of LAB and substances they produce with antiviral activity.
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Affiliation(s)
- I Al Kassaa
- Institut Charles Viollette - Université Lille 1, Bâtiment Polytech-Lille, Cité Scientifique, Avenue Paul Langevin, 59655, Villeneuve d'Ascq Cedex, France
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Belguesmia Y, Domenger D, Caron J, Dhulster P, Ravallec R, Drider D, Cudennec B. Novel probiotic evidence of lactobacilli on immunomodulation and regulation of satiety hormones release in intestinal cells. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.04.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Lactobacillus plantarum with broad antifungal activity: A promising approach to increase safety and shelf-life of cereal-based products. Int J Food Microbiol 2016; 247:48-54. [PMID: 27240933 DOI: 10.1016/j.ijfoodmicro.2016.04.027] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 03/23/2016] [Accepted: 04/25/2016] [Indexed: 12/26/2022]
Abstract
Cereal-based fermented products are worldwide diffused staple food resources and cereal-based beverages represent a promising innovative field in the food market. Contamination and development of spoilage filamentous fungi can result in loss of cereal-based food products and it is a critical safety concern due to their potential ability to produce mycotoxins. Lactic Acid Bacteria (LAB) have been proposed as green strategy for the control of the moulds in the food industry due to their ability to produce antifungal metabolites. In this work, eighty-eight Lactobacillus plantarum strains were screened for their antifungal activity against Aspergillus niger, Aspergillus flavus, Fusarium culmorum, Penicillium roqueforti, Penicillium expansum, Penicillium chrysogenum, and Cladosporium spp. The overlayed method was used for a preliminary discrimination of the strains as no, mild and strong inhibitors. L. plantarum isolates that displayed broad antifungal spectrum activity were further screened based on the antifungal properties of their cell-free supernatant (CFS). CFSs from L. plantarum UFG 108 and L. plantarum UFG 121, in reason of their antifungal potential, were characterized and analyzed by HPLC. Results indicated that lactic acid was produced at high concentration during the growth phase, suggesting that this metabolic aptitude, associated with the low pH, contributed to explain the highlighted antifungal phenotype. Production of phenyllactic acid was also observed. Finally, a new oat-based beverage was obtained by fermentation with the strongest antifungal strain L. plantarum UFG 121. This product was submitted or not to a thermal stabilization and artificially contaminated with F. culmorum. Samples containing L. plantarum UFG 121 showed the best biopreservative effects, since that no differences were observed in terms of some qualitative features between not or contaminated samples with F. culmorum. Here we demonstrate, for the first time, the suitability of LAB strains for the fermentation and antifungal biopreservation of oat-based products.
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Santos CMA, Pires MCV, Leão TL, Hernández ZP, Rodriguez ML, Martins AKS, Miranda LS, Martins FS, Nicoli JR. Selection of Lactobacillus strains as potential probiotics for vaginitis treatment. MICROBIOLOGY-SGM 2016; 162:1195-1207. [PMID: 27154285 DOI: 10.1099/mic.0.000302] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lactobacilli are the dominant bacteria of the vaginal tract of healthy women, and imbalance of the local microbiota can predispose women to acquire infections, such as bacterial vaginosis (BV) and vulvovaginal candidiasis (VVC). Although antimicrobial therapy is generally effective, there is still a high incidence of recurrence and increase of microbial resistance due to the repetitive use of antimicrobials. Thus, it has been suggested that administration of probiotics incorporating selected Lactobacillus strains may be an effective strategy for preventing vaginal infections. Accordingly, the in vitro probiotic potential of 23 lactobacilli isolated from the vaginal ecosystem of healthy women from Cuba was evaluated for use in BV and VVC treatments. Eight strains were selected based on their antagonist potential against Gardnerella vaginalis, Candida albicansor both. In vitro assays revealed that all these strains reduced the pathogen counts in co-incubation, showed excellent adhesive properties (biofilm formation and auto-aggregation), were able to co-aggregate with G. vaginalis and C. albicans, yielded high amounts of hydrogen peroxide and lactic acid and demonstrated high adhesion rates to epithelial HeLa cells. Interference tests within HeLa cells showed that all strains were able to reduce the adherence of pathogens by exclusion or displacement. Lactobacilli were able to inhibit HeLa cell apoptosis caused by pathogens when the cells were incubated with the probiotics prior to challenge. These results suggest that these strains have a promising probiotic potential and can be used for prevention or treatment of BV and VVC.
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Affiliation(s)
- Carolina M A Santos
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria C V Pires
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thiago L Leão
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Zulema P Hernández
- Centro Nacional de Sanidad Agropecuária, Dirección de Producciones Biofarmacéuticas, San José de las Lajas Mayabeque, Cuba
| | - Marisleydys L Rodriguez
- Centro Nacional de Sanidad Agropecuária, Dirección de Producciones Biofarmacéuticas, San José de las Lajas Mayabeque, Cuba
| | - Ariane K S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lilian S Miranda
- Centro Nacional de Sanidad Agropecuária, Dirección de Producciones Biofarmacéuticas, San José de las Lajas Mayabeque, Cuba
| | - Flaviano S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jacques R Nicoli
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Arena MP, Silvain A, Normanno G, Grieco F, Drider D, Spano G, Fiocco D. Use of Lactobacillus plantarum Strains as a Bio-Control Strategy against Food-Borne Pathogenic Microorganisms. Front Microbiol 2016; 7:464. [PMID: 27148172 PMCID: PMC4829616 DOI: 10.3389/fmicb.2016.00464] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 03/21/2016] [Indexed: 12/28/2022] Open
Abstract
Lactobacillus plantarum is one of the most versatile species extensively used in the food industry both as microbial starters and probiotic microorganisms. Several L. plantarum strains have been shown to produce different antimicrobial compounds such as organic acids, hydrogen peroxide, diacetyl, and also bacteriocins and antimicrobial peptides, both denoted by a variable spectrum of action. In recent decades, the selection of microbial molecules and/or bacterial strains able to produce antagonistic molecules to be used as antimicrobials and preservatives has been attracting scientific interest, in order to eliminate or reduce chemical additives, because of the growing attention of consumers for healthy and natural food products. The aim of this work was to investigate the antimicrobial activity of several food-isolated L. plantarum strains, analyzed against the pathogenic bacteria Listeria monocytogenes, Salmonella Enteritidis, Escherichia coli O157:H7 and Staphylococcus aureus. Antagonistic activity was assayed by agar spot test and revealed that strain L. plantarum 105 had the strongest ability to contrast the growth of L. monocytogenes, while strains L. plantarum 106 and 107 were the most active microorganisms against E. coli O157:H7. The antimicrobial ability was also screened by well diffusion assay and broth micro-dilution method using cell-free supernatants (CFS) from each Lactobacillus strain. Moreover, the chemical nature of the molecules released in the CFS, and possibly underlying the antagonistic activity, was preliminary characterized by exposure to different constraints such as pH neutralization, heating, catalase, and proteinase treatments. Our data suggest that the ability of L. plantarum cultures to contrast pathogens growth in vitro depends, at least in part, on a pH-lowering effect of supernatants and/or on the presence of organic acids. Cluster analysis was performed in order to group L. plantarum strains according to their antimicrobial effect. This study emphasizes the tempting use of the tested L. plantarum strains and/or their CFS as antimicrobial agents against food-borne pathogens.
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Affiliation(s)
- Mattia Pia Arena
- Department of Science of Agriculture, Food and Environment, University of Foggia Foggia, Italy
| | - Amandine Silvain
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies, Institut Charles Viollette-Université Lille 1, Université de Lille Lille, France
| | - Giovanni Normanno
- Department of Science of Agriculture, Food and Environment, University of Foggia Foggia, Italy
| | - Francesco Grieco
- Institute of Sciences of Food Production (ISPA), Lecce Section, Consiglio Nazionale delle Ricerche Lecce, Italy
| | - Djamel Drider
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies, Institut Charles Viollette-Université Lille 1, Université de Lille Lille, France
| | - Giuseppe Spano
- Department of Science of Agriculture, Food and Environment, University of Foggia Foggia, Italy
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia Foggia, Italy
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58
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Paek NS, Lee YY, Han SH, Kang CH, So JS. Characterization and Inhibitory Activity of Lactobacillus plantarum MG989 and Lactobacillus fermentum MG901 Isolated from Vaginal Microbiota of Korean Women against Gardnerella vaginalis and Candida albicans. ACTA ACUST UNITED AC 2016. [DOI: 10.7841/ksbbj.2016.31.1.40] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Al-Seraih A, Flahaut C, Krier F, Cudennec B, Drider D. Characterization of Candida famata Isolated from Poultry Feces for Possible Probiotic Applications. Probiotics Antimicrob Proteins 2015; 7:233-41. [DOI: 10.1007/s12602-015-9201-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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60
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Masoumikia R, Ganbarov K. Antagonistic activity of probiotic lactobacilli against human enteropathogenic bacteria in homemade tvorog curd cheese from Azerbaijan. ACTA ACUST UNITED AC 2015; 5:151-4. [PMID: 26457253 PMCID: PMC4597163 DOI: 10.15171/bi.2015.21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 05/08/2015] [Accepted: 07/11/2015] [Indexed: 01/24/2023]
Abstract
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Introduction: Human health is deemed to be maintained by the crosstalk among the body and probiotic bacteria. Disruptions in this composition are associated with the pathogenesis of numerous diseases. Through modernization, traditional foods consumption has been abandoned and native food starters have been substituted with industrial products. Hence, we aimed to isolate and evaluate probiotic bacteria from traditional fermented foods which can be used as probiotics as well as starter cultures in food industry and in medicine against antibiotic resistant pathogenes. To this end, an intact village was recognized in the Republic of Azerbaijan with traditional dairy products, yielding a variety of potential probiotics.
Methods: In this study, tvorog as a traditional dairy product from Dashkasan, Ismailli and khachmaz regions in Azerbaijan was characterized for the isolation of Lactobacilli with probiotic potentiality. The bacteria were tested for the resistance to the acid, bile, and the antagonistic effect of human pathogenic bacteria. The isolates were identified by 16s rDNA sequencing with a blast to the databank.
Results: Three species with higher homology to the L. planetarium, L. rhamnosus, and L. casei with high probiotic potentiality and antibacterial effects were isolated.
Conclusion: Homemade tvorog curd cheese in Azerbaijan harbor a variety of probiotics with industrial applications as well as potentiality to be preserved in a biobank for the future medicinal applications especially against antibiotic resistant pathogenes.
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Affiliation(s)
- Reza Masoumikia
- Department of Microbiology, Faculty of Biology, Baku State University, Azerbaijan
| | - Khudaverdi Ganbarov
- Department of Microbiology, Faculty of Biology, Baku State University, Azerbaijan
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61
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Miquel S, Beaumont M, Martín R, Langella P, Braesco V, Thomas M. A proposed framework for an appropriate evaluation scheme for microorganisms as novel foods with a health claim in Europe. Microb Cell Fact 2015; 14:48. [PMID: 25889559 PMCID: PMC4407354 DOI: 10.1186/s12934-015-0229-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 03/17/2015] [Indexed: 01/20/2023] Open
Abstract
This paper concerns the procedure and the scientific approach to obtain market authorization for a microorganism to be recognized as a novel food with a health claim. Microorganisms that have not been traditionally used during food production in Europe prior to 1997 are considered as novel foods, which should undergo an in-depth characterization and safety assessment before being authorized on the European market. If a novel food bacterium is claimed to provide a beneficial effect on health, these claims must also be investigated before they can be authorized. Some requirements to obtain novel food certification are shared with those required to obtain a health claim. Although regulation exists that deals with these issues for foods in general, bacteria in food raise a specific set of questions that are only minimally addressed in official documentation. We propose a framework and suggest a list of criteria that should be assessed to obtain marketing authorization and health claim for a bacterium in accordance with European health policy.
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Affiliation(s)
- Sylvie Miquel
- Commensal and Probiotics-Host Interactions Laboratory, UMR1319 Micalis, INRA, AgroParisTech, Domaine de Vilvert, 78350, Jouy en Josas, France. .,AgroParisTech, UMR 1319 MICALIS, F-78350, Jouy-en-Josas, France.
| | - Martin Beaumont
- Commensal and Probiotics-Host Interactions Laboratory, UMR1319 Micalis, INRA, AgroParisTech, Domaine de Vilvert, 78350, Jouy en Josas, France. .,AgroParisTech, UMR 1319 MICALIS, F-78350, Jouy-en-Josas, France.
| | - Rebeca Martín
- Commensal and Probiotics-Host Interactions Laboratory, UMR1319 Micalis, INRA, AgroParisTech, Domaine de Vilvert, 78350, Jouy en Josas, France. .,AgroParisTech, UMR 1319 MICALIS, F-78350, Jouy-en-Josas, France.
| | - Philippe Langella
- Commensal and Probiotics-Host Interactions Laboratory, UMR1319 Micalis, INRA, AgroParisTech, Domaine de Vilvert, 78350, Jouy en Josas, France. .,AgroParisTech, UMR 1319 MICALIS, F-78350, Jouy-en-Josas, France.
| | | | - Muriel Thomas
- Commensal and Probiotics-Host Interactions Laboratory, UMR1319 Micalis, INRA, AgroParisTech, Domaine de Vilvert, 78350, Jouy en Josas, France. .,AgroParisTech, UMR 1319 MICALIS, F-78350, Jouy-en-Josas, France.
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Algburi A, Volski A, Chikindas ML. Natural antimicrobials subtilosin and lauramide arginine ethyl ester synergize with conventional antibiotics clindamycin and metronidazole against biofilms of Gardnerella vaginalis but not against biofilms of healthy vaginal lactobacilli. Pathog Dis 2015; 73:ftv018. [PMID: 25838136 DOI: 10.1093/femspd/ftv018] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2015] [Indexed: 11/12/2022] Open
Abstract
The purpose of this study was to evaluate the ability of clindamycin and metronidazole to synergize with natural antimicrobials against biofilms of bacterial vaginosis (BV)-associated Gardnerella vaginalis. Minimum bactericidal concentrations for biofilm cells (MBCs-B) were determined for each antimicrobial. The MBCs-B of lauramide arginine ethyl ester (LAE), subtilosin, clindamycin and metronidazole were 50, 69.5, 20 and 500 μg mL(-1), respectively. A checkerboard assay and isobologram were used to analyze the type of interactions between these antimicrobials. The combination of metronidazole with natural antimicrobials did not inhibit planktonic lactobacilli. Clindamycin with either LAE or with subtilosin was inhibitory for planktonic but not for biofilm-associated lactobacilli. All tested antimicrobial combinations were inhibitory for BV-associated Mobiluncus curtisii and Peptostreptococcus anaerobius. LAE and subtilosin synergized with clindamycin and metronidazole against biofilms of G. vaginalis but not biofilm-associated vaginal lactobacilli. The biofilms of BV-associated pathogens can be controlled by synergistically acting combinations of conventional antibiotics and natural antimicrobials which will help better management of current antibiotics, especially considering robust bacterial resistance. Our findings create a foundation for a new strategy in the effective control of vaginal infections.
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Affiliation(s)
- Ammar Algburi
- Department of Biochemistry and Microbiology, Rutgers State University, New Brunswick, NJ 08901, USA Department of Microbiology, Veterinary College, Diyala University, Baqubah, Iraq
| | - Anna Volski
- School of Arts and Science, Rutgers State University, New Brunswick, NJ 08901, USA
| | - Michael L Chikindas
- School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ 08901, USA
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63
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Al Atya AK, Drider-Hadiouche K, Ravallec R, Silvain A, Vachee A, Drider D. Probiotic potential of Enterococcus faecalis strains isolated from meconium. Front Microbiol 2015; 6:227. [PMID: 25883590 PMCID: PMC4382979 DOI: 10.3389/fmicb.2015.00227] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 03/07/2015] [Indexed: 01/17/2023] Open
Abstract
107 bacterial isolates with Gram positive staining and negative catalase activity, presumably assumed as lactic acid bacteria, were isolated from samples of meconium of 6 donors at Roubaix hospital, in the north of France. All these bacterial isolates were identified by MALDI-TOF mass spectrometry as Enterococcus faecalis. However, only six isolates among which E. faecalis 14, E. faecalis 28, E. faecalis 90, E. faecalis 97, and E. faecalis 101 (obtained from donor 3), and E. faecalis 93 (obtained from donor 5) were active against some Gram-negative bacteria and Gram-positive bacteria , through production of lactic acid, and bacteriocin like inhibitory substances. The identification of these isolates was confirmed by 16rDNA sequencing and their genetic relatedness was established by REP-PCR and pulsed field gel electrophoresis methods. Importantly, the aforementioned antagonistic isolates were sensitive to various classes of antibiotics tested, exhibited high scores of coaggregation and hydrophobicity, and were not hemolytic. Taken together, these properties render these strains as potential candidates for probiotic applications.
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Affiliation(s)
- Ahmed K Al Atya
- Institut Charles Viollette, Polytech-Lille, Université Lille 1 - Sciences et Technologies, Villeneuve d'Ascq France
| | | | - Rozenn Ravallec
- Institut Charles Viollette, Polytech-Lille, Université Lille 1 - Sciences et Technologies, Villeneuve d'Ascq France
| | - Amadine Silvain
- Génie Biologique et Alimentaire, Institut Charles Violette, ProbioGem Laboratoire, Polytech-Lille, Université Lille 1 - Sciences et Technologies, Villeneuve d'Ascq France
| | | | - Djamel Drider
- Institut Charles Viollette, Polytech-Lille, Université Lille 1 - Sciences et Technologies, Villeneuve d'Ascq France
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64
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Vaginal Lactobacillus gasseri CMUL57 can inhibit herpes simplex type 2 but not Coxsackievirus B4E2. Arch Microbiol 2015; 197:657-64. [PMID: 25752765 PMCID: PMC7080026 DOI: 10.1007/s00203-015-1101-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 02/24/2015] [Accepted: 03/01/2015] [Indexed: 11/09/2022]
Abstract
This study aimed at demonstrating the antiviral activity of Lactobacillus gasseri CMUL57 (L. gasseri CMUL57), L. acidophilus CMUL67 and L. plantarum CMUL140 against herpes simplex type 2 (HSV-2) and Coxsackievirus B4E2 (CVB4E2), which are enveloped and naked viruses, respectively. These lactobacilli were non-cytotoxic and were able to reduce the cytopathic effect induced by HSV-2 in Vero cell monolayers. However, lactobacilli were not active against CVB4E2. Tested lactobacilli displayed anti-HSV-2 activity when they were co-incubated with the virus prior to inoculating the mixture to Vero cell monolayers. The detection of HSV-2 DNA by PCR in pellets of bacteria/virus mixtures let us to hypothesize that anti-HSV-2 activity of lactobacilli resulted from the viruses’ entrapment. This study showed the capabilities of vaginal lactobacilli to inhibit enveloped viruses such as HSV-2.
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In Vitro Evaluation of Probiotic Properties of Lactic Acid Bacteria from the Gut of Labeo rohita and Catla catla. Probiotics Antimicrob Proteins 2015; 7:126-36. [DOI: 10.1007/s12602-015-9184-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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66
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Ait Ouali F, Al Kassaa I, Cudennec B, Abdallah M, Bendali F, Sadoun D, Chihib NE, Drider D. Identification of lactobacilli with inhibitory effect on biofilm formation by pathogenic bacteria on stainless steel surfaces. Int J Food Microbiol 2014; 191:116-24. [PMID: 25261829 DOI: 10.1016/j.ijfoodmicro.2014.09.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 09/08/2014] [Accepted: 09/14/2014] [Indexed: 12/18/2022]
Abstract
Two hundred and thirty individual clones of microorganisms were recovered from milk tanks and milking machine surfaces at two distinct farms (Bejaja City, Algeria). Of these clones, 130 were identified as lactic acid bacteria (LAB). In addition Escherichia coli, Salmonella, Staphylococcus aureus and Pseudomonas aeruginosa species were identified in the remaining 100 isolates-spoilage isolate. These isolates were assayed for ability to form biofilms. S. aureus, Lactobacillus brevis strains LB1F2, LB14F1 and LB15F1, and Lactobacillus pentosus strains LB2F2 and LB3F2 were identified as the best biofilm formers. Besides, these LAB isolates were able to produce proteinaceous substances with antagonism against the aforementioned spoilage isolates, when grown in MRS or TSB-YE media. During the screening, L. pentosus LB3F2 exhibited the highest antibacterial activity when grown in TSB-YE medium at 30 °C. Additionally, L. pentosus LB3F2 was able to strongly hamper the adhesion of S. aureus SA3 on abiotic surfaces as polystyrene and stainless steel slides. LAB isolates did not show any hemolytic activity and all of them were sensitive to different families of antibiotic tested. It should be pointed out that LB3F2 isolate was not cytotoxic on the intestinal cells but could stimulate their metabolic activity. This report unveiled the potential of LB1F2, LB14F1, LB15F1, LB2F2, and LB3F2 isolates to be used as natural barrier or competitive exclusion organism in the food processing sector as well as a positive biofilm forming bacteria.
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Affiliation(s)
- Fatma Ait Ouali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Imad Al Kassaa
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies: Institut Charles Viollette, Bâtiment Polytech'Lille, Université Lille 1, Avenue Paul Langevin, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France; Centre AZM de Biotechnologie, EDST-Université Libanaise Tripoli-Lebanon, Faculté de santé publique section 3, Université Libanaise, Tripoli, Lebanon
| | - Benoit Cudennec
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies: Institut Charles Viollette, Bâtiment Polytech'Lille, Université Lille 1, Avenue Paul Langevin, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Marwan Abdallah
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies: Institut Charles Viollette, Bâtiment Polytech'Lille, Université Lille 1, Avenue Paul Langevin, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Djamila Sadoun
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Nour-Eddine Chihib
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies: Institut Charles Viollette, Bâtiment Polytech'Lille, Université Lille 1, Avenue Paul Langevin, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Djamel Drider
- Laboratoire Régional de Recherche en Agroalimentaire et Biotechnologies: Institut Charles Viollette, Bâtiment Polytech'Lille, Université Lille 1, Avenue Paul Langevin, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France.
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