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Pogány Simonová M, Chrastinová Ľ, Lauková A. Enterocin 7420 and Sage in Rabbit Diet and Their Effect on Meat Mineral Content and Physico-Chemical Properties. Microorganisms 2022; 10:microorganisms10061094. [PMID: 35744612 PMCID: PMC9229049 DOI: 10.3390/microorganisms10061094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 11/19/2022] Open
Abstract
Rabbit meat has outstanding nutritional characteristics—it is a lean meat with low fat, cholesterol and sodium content, with high-biological-value proteins, potassium, phosphorus, selenium, iron and vitamin B12 level. The dietary inclusion of natural bioactive compounds can improve the quality of rabbit meat. The present study evaluated the effect of enterocin 7420 (Ent 7420) and sage (Salvia officinalis) extract on the quality and mineral content of rabbit meat. A total of 96 Hyla rabbits (aged 35 days) were divided into E (Ent 7420; 50 µL/animal/d), S (sage extract; 10 µL/animal/d), E + S (Ent 7420 and sage in combination) and control (C) groups. Additives were administrated in drinking water for 21 days. A significant increase in meat iron (p < 0.01) content was noted; phosphorus and zinc levels were also elevated in experimental groups, compared with control data. Ent 7420 and sage treatment reduced the calcium and manganese (p < 0.01) contents. The physico-chemical traits of rabbit meat were not negatively influenced by treatment. Based on these results, diet supplementation, mostly with Ent 7420 but also in combination with sage, could enhance the quality of rabbit meat mineral, with a focus on its iron, phosphorus and zinc contents.
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Affiliation(s)
- Monika Pogány Simonová
- Centre of Biosciences of the Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 04001 Košice, Slovakia;
- Correspondence:
| | - Ľubica Chrastinová
- Institute for Nutrition, National Agricultural and Food Centre, Hlohovecká 2, 95141 Lužianky, Slovakia;
| | - Andrea Lauková
- Centre of Biosciences of the Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 04001 Košice, Slovakia;
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Bacteriocin-like inhibitory substances production by Enterococcus faecium 135 in co-culture with Ligilactobacillus salivarius and Limosilactobacillus reuteri. Braz J Microbiol 2022; 53:131-141. [PMID: 34988936 PMCID: PMC8882487 DOI: 10.1007/s42770-021-00661-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 11/16/2021] [Indexed: 01/09/2023] Open
Abstract
The use of lactic acid bacteria (LAB) and probiotic cultures in the breeding of animals such as poultry and swine are quite common. It is known that those strains can produce bacteriocins when grown in pure culture. However, the production of bacteriocin using co-culture of microorganisms has not been much studied so far. The present study contributes with innovation in this area by embracing the production of bacteriocin-like inhibitory substances (BLIS) by a newly isolated strain of Enterococcus faecium 135. Additionally, the co-cultivation of this strain with Ligilactobacillus salivarius and Limosilactobacillus reuteri was also investigated. The antimicrobial activity of the produced BLIS was evaluated against Listeria monocytogenes, Listeria innocua, Salmonella enterica, and Salmonella enterica serovar Typhimurium using two methods: turbidimetric and agar diffusion. In addition, the presence of enterocin genes was also evaluated. The BLIS produced showed a bacteriostatic effect against the bio-indicator strains, and the highest antimicrobial activities expressed by arbitrary units per mL (AU/mL) were obtained against L. monocytogenes in monoculture (12,800 AU/mL), followed by the co-culture of E. faecium with Limosilactobacillus reuteri (400 AU/mL). After concentration with ammonium sulfate, the antimicrobial activity raised to 25,600 AU/mL. Assays to determine the proteinaceous nature of the BLIS showed susceptibility to trypsin and antimicrobial activity until 90 °C. Finally, analysis of the presence of structural genes of enterocins revealed that four enterocin genes were present in E. faecium 135. These results suggest that BLIS produced by E. faecium 135 has potential to be a bacteriocin and, after purification, could potentially be used as an antimicrobial agent in animal breeding.
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van Zyl WF, Deane SM, Dicks LM. Molecular insights into probiotic mechanisms of action employed against intestinal pathogenic bacteria. Gut Microbes 2020; 12:1831339. [PMID: 33112695 PMCID: PMC7595611 DOI: 10.1080/19490976.2020.1831339] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gastrointestinal (GI) diseases, and in particular those caused by bacterial infections, are a major cause of morbidity and mortality worldwide. Treatment is becoming increasingly difficult due to the increase in number of species that have developed resistance to antibiotics. Probiotic lactic acid bacteria (LAB) have considerable potential as alternatives to antibiotics, both in prophylactic and therapeutic applications. Several studies have documented a reduction, or prevention, of GI diseases by probiotic bacteria. Since the activities of probiotic bacteria are closely linked with conditions in the host's GI-tract (GIT) and changes in the population of enteric microorganisms, a deeper understanding of gut-microbial interactions is required in the selection of the most suitable probiotic. This necessitates a deeper understanding of the molecular capabilities of probiotic bacteria. In this review, we explore how probiotic microorganisms interact with enteric pathogens in the GIT. The significance of probiotic colonization and persistence in the GIT is also addressed.
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Affiliation(s)
- Winschau F. van Zyl
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
| | - Shelly M. Deane
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
| | - Leon M.T. Dicks
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa,CONTACT Leon M.T. Dicks; Department of Microbiology; Stellenbosch University, Stellenbosch7602, South Africa
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Borda-Molina D, Roth C, Hérnandez-Arriaga A, Rissi D, Vollmar S, Rodehutscord M, Bennewitz J, Camarinha-Silva A. Effects on the Ileal Microbiota of Phosphorus and Calcium Utilization, Bird Performance, and Gender in Japanese Quail. Animals (Basel) 2020; 10:ani10050885. [PMID: 32438715 PMCID: PMC7278395 DOI: 10.3390/ani10050885] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/08/2020] [Accepted: 05/16/2020] [Indexed: 12/18/2022] Open
Abstract
In this study, we aimed to investigate the ileum digesta of a large cohort of Japanese quail fed the same diet, with similar environmental conditions. We also address how P utilization (PU), Ca utilization (CaU), and bird performance (feed intake (FI), feed conversion (FC), and body weight gain (BWG)) modify intestinal microbiota of male and female quail. Despite the great number of samples analyzed (760), a core microbiome was composed of five bacteria. The Unc. Lactobacillus, Unc. Clostridaceae 1, Clostridium sensu stricto, Escherichia coli, and Streptococcus alactolyticus were detected in all samples and contributed to more than 70% of the total community. Depending on the bird predisposition for PU, CaU, FI, BWG, and FC, those species were present in higher or lower abundances. There was a significant gender effect on the ileal microbial community. While females had higher abundances of Lactobacillus, males were more colonized by Streptococcus alactolyticus. The entire cohort was highly colonized by Escherichia coli (8%-15%), an enteropathogenic bacteria. It remains unclear, if microbiota composition followed the mechanisms that caused different PU, CaU, FI, FC, and BWG or if the change in microbiota composition and function caused the differences in PU, CaU, and performance traits.
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Hanchi H, Mottawea W, Sebei K, Hammami R. The Genus Enterococcus: Between Probiotic Potential and Safety Concerns-An Update. Front Microbiol 2018; 9:1791. [PMID: 30123208 PMCID: PMC6085487 DOI: 10.3389/fmicb.2018.01791] [Citation(s) in RCA: 266] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/17/2018] [Indexed: 02/05/2023] Open
Abstract
A considerable number of strains belonging to different species of Enterococcus are highly competitive due to their resistance to wide range of pH and temperature. Their competitiveness is also owed to their ability to produce bacteriocins recognized for their wide-range effectiveness on pathogenic and spoilage bacteria. Enterococcal bacteriocins have attracted great research interest as natural antimicrobial agents in the food industry, and as a potential drug candidate for replacing antibiotics in order to treat multiple drugs resistance pathogens. However, the prevalence of virulence factors and antibiotic-resistance genes and the ability to cause disease could compromise their application in food, human and animal health. From the current regulatory point of view, the genus Enterococcus is neither recommended for the QPS list nor have GRAS status. Although recent advances in molecular biology and the recommended methods for the safety evaluation of Enterococcus strains allowed the distinction between commensal and clinical clades, development of highly adapted methods and legislations are still required. In the present review, we evaluate some aspects of Enterococcus spp. related to their probiotic properties and safety concerns as well as the current and potential application in food systems and treatment of infections. The regulatory status of commensal Enterococcus candidates for food, feed, probiotic use, and recommended methods to assess and ensure their safety are also discussed.
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Affiliation(s)
- Hasna Hanchi
- Nutraceuticals and Functional Proteomics Potential of Biodiversity in Tunisia, Higher Institute of Applied Biological Sciences of Tunis (ISSBAT), University of Tunis El Manar, Tunis, Tunisia
| | - Walid Mottawea
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Khaled Sebei
- Nutraceuticals and Functional Proteomics Potential of Biodiversity in Tunisia, Higher Institute of Applied Biological Sciences of Tunis (ISSBAT), University of Tunis El Manar, Tunis, Tunisia
| | - Riadh Hammami
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
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Enterocin B3A-B3B produced by LAB collected from infant faeces: potential utilization in the food industry for Listeria monocytogenes biofilm management. Antonie van Leeuwenhoek 2016; 110:205-219. [PMID: 27878401 DOI: 10.1007/s10482-016-0791-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 10/14/2016] [Indexed: 02/06/2023]
Abstract
Enterococcus faecalis B3A-B3B produces the bacteriocin B3A-B3B with activity against Listeria monocytogenes, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA) and Clostridium perfringens, but apparently not against fungi or Gram-negative bacteria, except for Salmonella Newport. B3A-B3B enterocin has two different nucleotides but similar amino acid composition to the class IIb MR10A-MR10B enterocin. B3A-B3B consists of two peptides of predicted molecular mass of 5176.31 Da (B3A) and 5182.21 Da (B3B). Importantly, B3A-B3B impeded biofilm formation of the foodborne pathogen L. monocytogenes 162 grown on stainless steel. The antimicrobial treatment of stainless steel with nisin (1 or 16 mg ml-1) decreased the cell numbers by about 2 log CFU ml-1, thereby impeding the biofilm formation by L. monocytogenes 162 or its nisin-resistant derivative strain L. monocytogenes 162R. Furthermore, the combination of nisin and B3A-B3B enterocin reduced the MIC required to inhibit this pathogen grown in planktonic or biofilm cultures.
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Ščerbová J, Lauková A. Sensitivity to Enterocins of Thermophilic Campylobacter spp. from Different Poultry Species. Foodborne Pathog Dis 2016; 13:668-673. [PMID: 27602434 DOI: 10.1089/fpd.2016.2158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Campylobacter spp. have been isolated from various animals, including poultry. They are rapidly transmitted throughout broiler sheds by the fecal-oral route. A promising strategy to reduce Campylobacter spp. in poultry may be done due to the beneficial properties of probiotic bacteria and their bacteriocins. In this study, inhibition spectrum/activity of different enterocins was evaluated against Campylobacter spp. (isolated from different poultry) to indicate further practical use of enterocins. Enterocins are antimicrobial proteinaceous substances produced mostly by enterococci. Feces from broiler chickens (10), laying hens (47), ostriches (140), and ducks (40) were screened. Altogether, 23 strains were allotted to the species Campylobacter jejuni and Campylobacter coli using MALDI TOF mass spectrometry and confirmed by genotyping (PCR method). In the feces of ostriches, Campylobacter spp. were not confirmed. Campylobacter spp. isolated from different poultry showed resistance to nalidixic acid, ciprofloxacin, and ampicillin. Interestingly, strains demonstrating antibiotic resistance revealed sensitivity to at least one of the nine enterocins used (except C. coli Kc1, SZ3, and C. jejuni 1/D). Almost 52% strains were inhibited by Ent A (P). Enterocins can therefore be used to prevent or reduce Campylobacter spp.; it is a basis for practical use.
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Affiliation(s)
- Jana Ščerbová
- Institute of Animal Physiology , Slovak Academy of Sciences, Košice, Slovak Republic
| | - Andrea Lauková
- Institute of Animal Physiology , Slovak Academy of Sciences, Košice, Slovak Republic
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Lauková A, Szabóová R, Pleva P, Buňková L, Chrastinová Ľ. Decarboxylase-positive Enterococcus faecium strains isolated from rabbit meat and their sensitivity to enterocins. Food Sci Nutr 2016; 5:31-37. [PMID: 28070313 PMCID: PMC5217907 DOI: 10.1002/fsn3.361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 02/26/2016] [Accepted: 03/03/2016] [Indexed: 11/24/2022] Open
Abstract
Background The objective of the study was to determine sensitivity of Enterococcus faecium strains from rabbit meat to enterocins. Results Twenty‐five decarboxylase‐positive strains (from rabbit meat) allotted to the species E. faecium by genotypization and by MALDI TOF MS spectrometry identification (evaluation score value range 2.104–2.359; in the range for highly probable species identification‐score value 2.300–3.000 and secure probable species identification/probable species identification‐2.000–2.299) were studied. Seventeen strains were gelatinase positive. Although they did not produce histamine (HIS), spermidine, and spermine, they produce at least one among seven tested biogenic amines (BAs) in small amounts (2–10 mg/L) or up to very high amounts (>1000 mg/L). Putrescine was produced by two strains. These decarboxylase‐positive strains were sensitive to enterocins (Ents). All strains were sensitive to Ent 2019 and Ent 55 (inhibitory activity from 200 to 819 200 AU/mL). Twenty‐two strains were inhibited by Ent A(P) and Ent 4231; 20 strains were sensitive to Ent M. Conclusion Our results have spread the basic knowledge related to inhibitory spectrum of enterocins showing sensitivity of decarboxylase‐positive strains to enterocins. Protective possibilities of enterocins in meat processing were also indicated.
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Affiliation(s)
- Andrea Lauková
- Institute of Animal Physiology Slovak Academy of Sciences Šoltésovej 4-6 Košice 040 01 Slovakia
| | - Renata Szabóová
- University of Veterinary Medicine and Pharmacy Komenského 73 Košice 041 83 Slovakia
| | - Pavel Pleva
- Department of Environmental Protection Engineering Faculty of Technology Tomáš Bat'a University in Zlín T.G. Masaryka 5555 Zlín 760 01 Czech Republic
| | - Leona Buňková
- Department of Environmental Protection Engineering Faculty of Technology Tomáš Bat'a University in Zlín T.G. Masaryka 5555 Zlín 760 01 Czech Republic
| | - Ľubica Chrastinová
- Department of Nutrition National Agricultural and Food Centre Hlohovecká 2 Nitra-Lužianky 7949 41 Slovakia
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Lauková A, Kandričáková A, Ščerbová J. Use of bacteriocin-producing, probiotic strain Enterococcus faecium AL41 to control intestinal microbiota in farm ostriches. Lett Appl Microbiol 2015; 60:531-5. [PMID: 25732357 DOI: 10.1111/lam.12409] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/22/2015] [Accepted: 02/24/2015] [Indexed: 11/27/2022]
Abstract
Probiotic enterococci can produce bacteriocins. Enterococcus faecium AL41 is an Enterocin M-producing, probiotic strain which has previously shown beneficial effect in broiler chickens. In this study, it was used to control intestinal microbiota in farm ostriches in a 42-day experiment with an experimental group (EG, 40 ostriches) and a control group (CG, 46). In addition to feed mixture, the ostriches in EG received Ent. faecium AL41 (10(9) CFU ml(-1); by rifampicin-marked variant) 400 μl per animal per day in their drinking water for 21 days. Sampling was carried out at the start of the experiment (at day 0/1), at day 21 (after 21 days of AL41 application) and at day 42 (21 days after AL41 cessation). Faeces (mixture, n = 6) were treated using the standard microbiological dilution method and cultivated on selective media (ISO). The highest count of AL41 was found at day 42. Its identity was confirmed with PCR and Maldi-Tof. The ostriches were free of Salmonella and Campylobacter cells. At day 21, antimicrobial effect was demonstrated by significant reduction in coagulase-positive and negative staphylococci in EG compared to CG (P < 0·001) and coliforms, Enterobacteria and Pseudomonas-like bacteria (P < 0·001). We conclude that AL41 can be used to control intestinal microbiota in farm ostriches. Significance and impact of the study: Ostriches are excellent for high intensity farming in a wide range of climates, requiring only limited space and giving high yields per hectare. They are reared mainly for their meat. Although adult birds possess quite good immunity, young birds can be threatened by spoilage bacteria, especially when they are transferred from the nests to the farm area. Based on our previous results related to the beneficial effect of bacteriocin-producing, probiotic strain Enterococcus faecium AL41 in poultry or rabbits, we decided to test its ability to control intestinal microbiota in farming ostriches which has never been tested previously.
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Affiliation(s)
- A Lauková
- Institute of Animal Physiology Slovak Academy of Sciences, Košice, Slovakia
| | - A Kandričáková
- Institute of Animal Physiology Slovak Academy of Sciences, Košice, Slovakia
| | - J Ščerbová
- Institute of Animal Physiology Slovak Academy of Sciences, Košice, Slovakia
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Bali V, Panesar PS, Bera MB, Kennedy JF. Bacteriocins: Recent Trends and Potential Applications. Crit Rev Food Sci Nutr 2014; 56:817-34. [DOI: 10.1080/10408398.2012.729231] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chicken intestinal microbiota function with a special emphasis on the role of probiotic bacteria. Pol J Vet Sci 2014; 17:385-94. [PMID: 24988871 DOI: 10.2478/pjvs-2014-0057] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bacterial colonization of the chicken gut by environmental microbes begins immediately after hatching. Composition of the intestinal microbiota is dependent on the surrounding environment, diet variation, pathological conditions, antibiotic therapy, and others. The genomes of all these intestinal microbes form a microbiome which by far outnumbers the host's genome. As a consequence, the microbiome provides additional metabolic functions to the host, including nutrient utilization and absorption, fermentation of non-digestible dietary fiber, synthesis of some vitamins, biotransformation of bile acids, and the well-being of their chicken host. Microorganisms can also directly interact with the lining of the gastrointestinal tract, which may alter the physiology and immunological status of the bird. Since newly hatched broiler chickens demonstrate delayed commensal colonization and low bacterial diversity, the most effective and harmless method available to control the development and composition of the intestinal microbiota is a competitive exclusion treatment by applying probiotic bacteria. Additionally, recent research has shown that probiotic bacteria have a variety of beneficial effects, including counteraction of dysbiosis, promotion of gut health and homeostasis, enhancement of immune defenses and antagonization of infectious agents.
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Sekeyová Z, Mediannikov O, Roux V, Subramanian G, Spitalská E, Kristofík J, Darolová A, Raoult D. Identification of Rickettsia africae and Wolbachia sp. in Ceratophyllus garei fleas from Passerine birds migrated from Africa. Vector Borne Zoonotic Dis 2012; 12:539-43. [PMID: 22448745 DOI: 10.1089/vbz.2011.0645] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of the study was to reveal new aspects of the role of flea vector taken from migratory birds by screening of specimens with molecular biological methods. A field study was done in fishponds in Slovakia. Actually, 47 fleas were collected from reed warblers (Acrocephalus scirpaceus) and their nests. DNA was extracted and analyzed for representatives of the orders Rickettsiales. A rickettsia that shares 99.7% of identity by gltA gene with Rickettsia africae was identified in Ceratophyllus garei collected from A. scirpaceus. Moreover, two Wolbachia sp. were also detected in fleas. This is the first record of R. africae and Wolbachia sp. identified so far in Central Europe in fleas collected from migratory bird returning from Africa. This molecular study extends the geographic range and vector spectrum of arthropod-borne agents.
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Affiliation(s)
- Zuzana Sekeyová
- Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovak Republic
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Strompfová V, Lauková A. Enterococci from piglets — Probiotic properties and responsiveness to natural antibacterial substances. Folia Microbiol (Praha) 2010; 54:538-44. [DOI: 10.1007/s12223-009-0078-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Revised: 06/04/2009] [Indexed: 11/30/2022]
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Pogány Simonová M, Lauková A, Haviarová M. Pseudomonads from rabbits and their sensitivity to antibiotics and natural antimicrobials. Res Vet Sci 2009; 88:203-7. [PMID: 19716146 DOI: 10.1016/j.rvsc.2009.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 07/02/2009] [Accepted: 07/27/2009] [Indexed: 10/20/2022]
Abstract
The sensitivity/resistance of Pseudomonas spp. isolated from rabbits gastrointestinal tract and faeces to antibiotics, enterocins and herbal extracts was tested in this study. The counts of Pseudomonas-like bacteria were higher in faeces (3.23-6.16 log(10) CFU/mL/g) than in caecum (1.36-4.08 log(10) CFU/mL/g). Nineteen isolates (16 faecal, 3 caecal) were oxidase positive. The strains were allotted by phenotypization to Pseudomonas spp., Brevundimonas diminuta and Brevundimonasvesicularis. High percentage of resistant strains was observed to all antibiotics. The tested strains were more susceptible to natural substances, mainly to plant extracts oregano (95%) and sage extracts (58%). Comparing the antibacterial effect of antibiotics and enterocins against rabbits pseudomonads, enterocins were more effective; the strongest inhibitory activity was determined in the case of partially purified enterocins PPBs EF2019, EK13 and EF55.
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Affiliation(s)
- Monika Pogány Simonová
- Institute of Animal Physiology, Slovak Academy of Sciences, Soltésovej 4-6, 040 01 Kosice, Slovakia
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Marcináková M, Klingberg TD, Lauková A, Budde BB. The effect of pH, bile and calcium on the adhesion ability of probiotic enterococci of animal origin to the porcine jejunal epithelial cell line IPEC-J2. Anaerobe 2009; 16:120-4. [PMID: 19446648 DOI: 10.1016/j.anaerobe.2009.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 05/07/2008] [Accepted: 05/04/2009] [Indexed: 10/20/2022]
Abstract
Examination of adhesion ability using a quantitative assay based on radiolabelled bacteria showed that 10 Enterococcus strains exhibited adhesion ability from 2 to 4%. Enterococcus faecium EF2019 (isolate from rabbit faeces, deponed to Czech Culture of Microorganisms in Brno, CCM 7420) showed the highest adhesion ability (4.0+/-0.4%). With regard to survival, all strains displayed good resistance towards 0.3% oxgall and HCl (pH 3.0). Pretreatment of strains with HCl (pH 3.0) significantly reduced their adhesion. Pretreatment of strains by oxgall significantly reduced the adhesion capacity of E. faecium EF2019, EF1839 and EF319 strains, while the adhesion ability of E. faecium EE3 (isolate from canine feed) slightly increased. Furthermore, addition of calcium (200 mmol/l) significantly increased (P<0.001) the adhesion ability for all strains tested. The adhesion ability of the isolates from rabbits, EF1839 and EF529, as well as the isolate EE3 (strain from canine feed) increased from 2-3% up to 50-55% upon calcium addition. Despite, in general low adhesive properties, strains can survive passage through the gastrointestinal tract.
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Affiliation(s)
- Miroslava Marcináková
- Institute of Animal Physiology, Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovakia.
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Carter AJ, Adams MR, Woodward MJ, La Ragione RM. Control strategies forSalmonellacolonisation of poultry: the probiotic perspective. ACTA ACUST UNITED AC 2009. [DOI: 10.1616/1476-2137.15682] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Levkut M, Pistl J, Lauková A, Revajová V, Herich R, Ševčíková Z, Strompfová V, Szabóová R, Kokinčáková T. Antimicrobial activity of Enterococcus faecium ef 55 against Salmonella enteritidis in chicks. Acta Vet Hung 2009; 57:13-24. [PMID: 19457770 DOI: 10.1556/avet.57.2009.1.2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The protective effect of Enterococcus faecium EF 55 against Salmonella enterica serovar Enteritidis phage type 4 (SE PT4) was studied in 1-day-old chicks. The EF 55 strain (isolated and characterised by the authors earlier) was applied daily (1.10(9) CFU/0.2 ml PBS) for 7 days. Oral inoculation of the SE PT4 strain was performed on day 8 in a single dose of 5.10(8) CFU/0.2 ml PBS. The experiment lasted for 21 days. Samples were collected on day 1 of the experiment to verify the absence of Salmonella, on day 8 to check colonisation of EF 55 and immunological status in experimental birds, and on days 2, 4, 6, 8 and 14 after SE PT4 infection of chicks. Strain EF 55 sufficiently colonised the digestive tract of chicks after 7 days of application. The highest numbers of EF 55 in the faeces of chicks were observed before SE infection and persisted to day 6 post infection (p.i.) in both the EF and EF+SE groups. PCR confirmed the identity of the EF 55 strain. The counts of SE PT4 strain in faeces of the EF+SE group were significantly reduced in comparison to those in the SE group on days 2 and 14 p.i. (P < 0.01). The significant reduction of salmonellae in the caecum was recorded at the end of the experiment (day 14 p.i.) in the EF+SE group in comparison to the SE group (P < 0.01). At day 4 p.i., colonies of S. Enteritidis PT4 were found in the liver of chicks of the SE group in a higher concentration than in chicks of the EF+SE group (P < 0.001). Salmonellae were isolated from the liver until days 8 and 6 p.i. in the SE and EF+SE groups, respectively. The mean values of actual lymphocyte subpopulations in the blood and the relative percentage of caecal intraepithelial lymphocyte subpopulations (CD4, CD8, CD44, TCR, MHC II and IgM) were not influenced at a statistically significant level by the application of the EF 55 and/or the SE PT4 strain. The results demonstrate the antimicrobial effect of E. faecium EF 55 against S. Enteritidis PT4.
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Affiliation(s)
- Mikuláš Levkut
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Juraj Pistl
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Andrea Lauková
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Viera Revajová
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Robert Herich
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Zuzana Ševčíková
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
| | - Viola Strompfová
- 2 Slovak Academy of Sciences Institute of Animal Physiology Košice Slovak Republic
| | - Renáta Szabóová
- 2 Slovak Academy of Sciences Institute of Animal Physiology Košice Slovak Republic
| | - Tatiana Kokinčáková
- 1 University of Veterinary Medicine Department of Pathological Anatomy Komenského 73 041 81 Košice Slovak Republic
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Occurrence of the structural enterocin A, P, B, L50B genes in enterococci of different origin. Vet Microbiol 2008; 132:293-301. [DOI: 10.1016/j.vetmic.2008.05.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 05/01/2008] [Accepted: 05/05/2008] [Indexed: 11/20/2022]
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Gillor O, Etzion A, Riley MA. The dual role of bacteriocins as anti- and probiotics. Appl Microbiol Biotechnol 2008; 81:591-606. [PMID: 18853155 PMCID: PMC2670069 DOI: 10.1007/s00253-008-1726-5] [Citation(s) in RCA: 225] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 09/19/2008] [Accepted: 09/20/2008] [Indexed: 10/21/2022]
Abstract
Bacteria employed in probiotic applications help to maintain or restore a host's natural microbial floral. The ability of probiotic bacteria to successfully outcompete undesired species is often due to, or enhanced by, the production of potent antimicrobial toxins. The most commonly encountered of these are bacteriocins, a large and functionally diverse family of antimicrobials found in all major lineages of Bacteria. Recent studies reveal that these proteinaceous toxins play a critical role in mediating competitive dynamics between bacterial strains and closely related species. The potential use of bacteriocin-producing strains as probiotic and bioprotective agents has recently received increased attention. This review will report on recent efforts involving the use of such strains, with a particular focus on emerging probiotic therapies for humans, livestock, and aquaculture.
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Affiliation(s)
- O. Gillor
- Department of Environmental Hydrology & Microbiology, Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sde Boker Campus, Beersheba 84990, Israel
| | - A. Etzion
- Department of Dryland Biotechnologies, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sde Boker Campus, Beersheba 84990, Israel
| | - M. A. Riley
- Department of Biology, University of Massachusetts Amherst, 611 North Pleasant Street, Amherst, MA 01003, USA, e-mail:
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Lauková A, Marciňáková M, Strompfová V, Ouwehand AC. Probiotic potential of enterococci isolated from canine feed. Folia Microbiol (Praha) 2008; 53:84-8. [DOI: 10.1007/s12223-008-0012-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2007] [Revised: 05/22/2007] [Indexed: 10/22/2022]
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21
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Lauková A, Simonová M, Strompfová V, Styriak I, Ouwehand AC, Várady M. Potential of enterococci isolated from horses. Anaerobe 2008; 14:234-6. [PMID: 18508395 DOI: 10.1016/j.anaerobe.2008.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2008] [Revised: 04/10/2008] [Accepted: 04/11/2008] [Indexed: 10/22/2022]
Abstract
Faecal samples of 122 horses (from farms in Slovakia) were examined to select enterococci to study their probiotic potential for their further use as additives. Each gram of faeces contained 1.0-5.0 cfu (log 10) of enterococci. Of the 43 isolates, 25 (58.1%) were identified as Enterococcus faecium, 3 strains were (6.9%) Enterococcus mundtii and one strain was identified as E. faecalis. Fourteen isolates were not characterized further. A significant proportion of the isolates were resistant to kanamycin, vancomycin and gentamicin. Low urease activity of enterococci dominated. The values of lactic acid ranged from 0.98 to 1.91 mmol/L. Porcine fibronectectin and bovine lactoferrin were bound weakly by tested enterococci, while bovine fibrinogen was bound more strongly. Enterococci from horses did not bind bovine apotransferrin. The isolates adhered with the same ability to human as well as to canine mucus. At least one enterocin gene was detected among 16 analyzed isolates. Ent B gene was detected in all strains tested (16, 100%), followed by the genes ent A, ent P and ent L50B. Three suitable candidates-the strains of E. faecium EF 412, EF 462 and EF 491 were selected for further detail studies and possibilities to be used as additives.
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Affiliation(s)
- Andrea Lauková
- Institute of Animal Physiology Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovakia.
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22
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Strompfová V, Lauková A. In vitro study on bacteriocin production of Enterococci associated with chickens. Anaerobe 2007; 13:228-37. [PMID: 17884622 DOI: 10.1016/j.anaerobe.2007.07.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Revised: 07/23/2007] [Accepted: 07/23/2007] [Indexed: 11/18/2022]
Abstract
In recent years, the approach of using innovative strategies such as probiotics or bacteriocins for the prevention or treatment of bacterial infections has come into focus. The present study was undertaken to check in vitro ability of Enterococci-isolated from the gastrointestinal tract of chickens-to produce a bacteriocin-like substance and to describe some further probiotic properties in five selected Enterococcus faecium strains. All strains (n=17) were found to produce bacteriocin-like substances against 14 out of 20 indicator bacteria of animal, food or environmental origin. Selected E. faecium strains expressed sufficient survival by pH 3.0 after 3h, in the presence of 1% bile after 24h and they were sensitive to most of antimicrobials tested. All tested strains adhere to the human, canine and porcine intestinal mucus (between 1.5% and 9.2%). However, better adhesion ability was observed for the canine mucus. PCR detection of enterocin structural genes determined presence of enterocins A and P genes in all selected strains. Characterization of bacteriocin substance in detail was performed in E. faecium EF55. The EF55 strain produced a bacteriocin-like substance (during the late logarithmic and early stationary growth phase) with inhibitory activity mostly against Gram-positive bacteria (100-51,200 AU/mL) including Listeria monocytogenes. Proteinaceous character of the bacteriocin substance was confirmed (its inhibitory activity was lost after its treatment with proteases), it was found to be stable after heating (100 degrees C 10 min) and during 12 months storage at -20 degrees C. The highest inhibitory activity of bacteriocin produced by EF55 strain (growing in MRS) broth was achieved between pH 7.0 and 9.0.
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Affiliation(s)
- Viola Strompfová
- Institute of Animal Physiology, Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovak Republic.
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23
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Bacteriocin-producing strain of Enterococcus faecium EK 13 with probiotic character and its application in the digestive tract of rabbits. Biologia (Bratisl) 2006. [DOI: 10.2478/s11756-006-0191-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Strompfová V, Marcináková M, Simonová M, Gancarcíková S, Jonecová Z, Sciranková L, Koscová J, Buleca V, Cobanová K, Lauková A. Enterococcus faecium EK13--an enterocin a-producing strain with probiotic character and its effect in piglets. Anaerobe 2006; 12:242-8. [PMID: 17071114 DOI: 10.1016/j.anaerobe.2006.09.003] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Revised: 08/31/2006] [Accepted: 09/06/2006] [Indexed: 11/27/2022]
Abstract
The experiment was conducted to determine the effects of the inoculation of the probiotic and enterocin A-producing strain Enterococcus faecium EK13 on selected parameters of metabolic profile, gut microflora, growth, and health in newborn piglets of Slovak White Improved. Piglets for study were divided into two groups: one group (EK13 group, n=8) received strain EK13 per os once daily for 7 days (2ml per piglet, 10(9)CFU/mL of saline buffer). The control group of piglets (n=7) was given placebo-saline buffer. The experiment lasted 14 days. After 7 days, strain EK13 reached 9.8 log(10) CFU/g in faeces of E. faecium EK13 treated piglets while counts of Escherichia coli were significantly lower (P<0.01) than in piglets of the control group. The concentrations of total serum protein, calcium, haemoglobin, haematocrit, red blood cell count and index of phagocytic activity of leukocytes were significantly higher after application of strain EK13. On the other hand, cholesterol was significantly lower in the EK13 group of animals. On day 14, piglets were killed and samples of intestinal contents were taken. Total counts of bacteria in the intestinal contents (jejunum, ileum, caecum, colon) were not significantly influenced. The pH value was significantly lower (P<0.05) only in duodenum of piglets receiving E. faecium EK13. There was a significant higher concentration of lactic acid (P<0.01) and propionic acid in the colon (P<0.001) of the EK13 group. Application of E. faecium EK13 did not influence the daily body weight gain significantly.
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Affiliation(s)
- Viola Strompfová
- Institute of Animal Physiology, Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovakia.
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25
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Marcináková M, Simonová M, Strompfová V, Lauková A. Oral application ofEnterococcus faecium strain EE3 in healthy dogs. Folia Microbiol (Praha) 2006; 51:239-42. [PMID: 17004657 DOI: 10.1007/bf02932129] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ability of canine strain Enterococcus faecium EE3 to survive in healthy dogs and its effect on microbiological and biochemical parameters was determined. The strain was individually applied to 11 dogs per os at a dose of 10(9) CFU/mL (differed from 2 to 3 mL) for 1 week and persisted in feces for 3 months after cessation of its administration (reaching average concentration of 6.83 +/- 0.95 log CFU/g). Seven d after administration, a decrease in staphylococci and a significant decrease in Pseudomonas-like bacteria was observed. On the other hand, concentration of lactic acid bacteria increased but the growth of E. coli was not influenced. In the blood samples of dogs after 0-1 d (before application) and the blood samples 1 week after application, total lipids decreased in 8 dogs; the total protein also decreased. The levels of cholesterol were brought to the physiological level, i.e. in blood samples with low cholesterol values it increased to the physiological level and in those with high levels it decreased; cholesterol was not influenced in 3 dogs.
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Affiliation(s)
- M Marcináková
- Institute ofAnimal Physiology, Slovak Academy of Sciences, 040 01 Kosice, Slovakia
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26
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Lauková A, Strompfová V, Ouwehand A. Adhesion properties of enterococci to intestinal mucus of different hosts. Vet Res Commun 2005; 28:647-55. [PMID: 15609865 DOI: 10.1023/b:verc.0000045948.04027.a7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The adhesive capacity of selected enterococci to human, canine and porcine intestinal mucus was investigated in order to select for potential probiotic strains with good adhesive properties for human or animal use. The adhesion to the human intestinal mucus of the tested strains was found to range from log10 3.8 to log10 8.6 cfu per microtitre plate well. The highest adhesion to the human intestinal mucus was found among strains from horse faeces, dog faeces and dog feed. The adhesion to canine mucus was observed to range from log10 3.8 to log10 8.3 cfu/well, with the highest adhesive capacity among strains from dog faeces, horse faeces and dog's feed; on average log10 7.9, 7.3 and 7.0 cfu/well, respectively. Isolates from dogs did not bind at higher levels to canine mucus than to human mucus. A strong correlation was observed for the adhesion to human and canine intestinal mucus (p < 0.0001) and also between porcine and canine or human mucus (p < 0.05 for both). When comparing the adhesion of Enterococcus faecium and E. faecalis, no statistical significant differences were observed for any of the tested mucus types. The tested Enterococcus strains were found to exhibit a strain dependent on in vitro adhesion to human, canine and porcine intestinal mucus and did not exhibit host specificity in their adhesion, though some sources appeared to contain more adhesive strains than others. To our knowledge, this is the first report on the in vivo adhesion to intestinal mucus of a large number of enterococci from different sources.
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Affiliation(s)
- A Lauková
- Institute of Animal Physiology, Slovak Academy of Sciences, Soltésovej 4-6, 04001 Kosice, Slovakia.
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