Abstract
Background: Bovine Lactoferrin (bLf) has been reported as antimicrobial, antiviral, immunomodulatory and anticancer protein. Escherichia coli and Listeria spp. are food-borne bacteria that can produce illness in human being and mammals, the emergent antimicrobial drug resistance has been reported in these pathogens.
Objective: The aim for this study was to evaluate the bLf effect on in vitro biofilm production and the synergic effect of antibiotics on E. coli and Listeria isolates.
Methods: E. coli and Listeria specimens were isolated from bovine carcasses and slaughterhouses surfaces, respectively. Biofilm formation was analyzed with or without bLf, incubated for 48 h and spectrophotometry, cell viability was analyzed by colony-forming unit (CFU) and the synergistic effect of bLf with ampicillin, oxytetracycline, and streptomycin was evaluated through the fractional concentration index (FCI).
Results: Our results show that a low bLf concentration (0.8 μM) can diminish the in vitro biofilm production in Listeria isolates; also improves the in vitro oxytetracycline and streptomycin activity against E. coli, and ampicillin activity against Listeria isolates.
Conclusion: bLf can affect the biofilm production in Listeria isolates from slaughterhouses surfaces and shown synergic effect with ampicillin. Also has a synergic effect with oxytetracycline and streptomycin against E. coli isolates from bovine carcasses.
Keywords: Bovine Lactoferrin, Escherichia coli, Listeria, biofilm production, synergy, antibiotics.
Graphical Abstract
[http://dx.doi.org/10.1023/B:BIOM.0000027694.40260.70] [PMID: 15222467]
[http://dx.doi.org/10.1139/o2012-016] [PMID: 22540735]
[http://dx.doi.org/10.3390/ijms18030501]
[http://dx.doi.org/10.1016/j.biochi.2008.05.006] [PMID: 18541155]
[http://dx.doi.org/10.1006/jmbi.2001.4692] [PMID: 11397094]
[http://dx.doi.org/10.1128/IAI.61.2.719-728.1993] [PMID: 8423097]
[http://dx.doi.org/10.3168/jds.S0022-0302(90)78654-7] [PMID: 2107229]
[http://dx.doi.org/10.1111/j.1472-765X.2006.02076.x] [PMID: 17309501]
[http://dx.doi.org/10.1016/j.biochi.2008.06.009] [PMID: 18625283]
[PMID: 20195887]
[http://dx.doi.org/10.1139/o11-066] [PMID: 22397495]
[http://dx.doi.org/10.1007/s10534-014-9752-5] [PMID: 24878848]
[http://dx.doi.org/10.1007/s10534-018-0136-0] [PMID: 30136243]
[http://dx.doi.org/10.3390/molecules22101641]
[http://dx.doi.org/10.1111/nyas.14091] [PMID: 30924543]
[http://dx.doi.org/10.1016/j.aninu.2018.04.006] [PMID: 30175252]
[http://dx.doi.org/10.1186/s13099-019-0290-0] [PMID: 30675188]
[http://dx.doi.org/10.1111/j.1753-4887.2010.00286.x] [PMID: 20500787]
[http://dx.doi.org/10.1155/2014/742032]
[PMID: 24892007]
[http://dx.doi.org/10.1139/o06-053] [PMID: 16936809]
[http://dx.doi.org/10.1128/AAC.01688-08] [PMID: 19451301]
[http://dx.doi.org/10.1016/j.ijantimicag.2010.12.019] [PMID: 21377840]
[http://dx.doi.org/10.1111/j.1365-2621.2005.tb11476.x]
[http://dx.doi.org/10.1016/j.ijfoodmicro.2006.07.008] [PMID: 17010463]
[http://dx.doi.org/10.1099/jmm.0.05367-0] [PMID: 14729926]
[http://dx.doi.org/10.4315/0362-028X-53.6.468] [PMID: 31018344]
[http://dx.doi.org/10.1016/S0168-1605(03)00172-7] [PMID: 14672831]
[http://dx.doi.org/10.1128/9781555817886]
[http://dx.doi.org/10.3201/eid1805.111153] [PMID: 22515968]
[http://dx.doi.org/10.1016/j.peptides.2005.02.011] [PMID: 16112390]
[http://dx.doi.org/10.1128/JB.105.3.873-879.1971] [PMID: 4994038]
[http://dx.doi.org/10.1046/j.1365-2672.2001.01273.x] [PMID: 11309061]
[http://dx.doi.org/10.1128/AAC.00999-09] [PMID: 19995928]