Listeria monocytogenes infections: Analysis of 41 patients

Vela, Blanca N. Beamonte; García-Carretero, Rafael; Carrasco-Fernández, B.; Romero, Yolanda; Pérez-Pomata, María Teresa

doi:10.1016/j.medcle.2019.09.008

Cited by 1 publication

(1 citation statement)

References 19 publications

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“…However, it has been shown that L. monocytogenes is ten times more effective in invading the CNS than common pathogens such as Streptococcus pneumoniae or Group B Streptococci (Schuchat et al, 1997). Besides CNS infection and febrile gastroenteritis (Dalton et al, 1997;O'Toole et al, 2000;Disson and Lecuit, 2012), sepsis is one of the most common diseases caused by L. monocytogenes in immunosuppressed patients (Büla et al, 1995;Lorber, 1997;Opperman and Bamford, 2018;Vela et al, 2020). Less frequent are diseases like endocarditis, peritonitis, and focal infections (Doganay, 2003).…”

Section: Introductionmentioning

confidence: 99%

Plasma-Treated Water Affects Listeria monocytogenes Vitality and Biofilm Structure

et al. 2021

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Background: Plasma-generated compounds (PGCs) such as plasma-processed air (PPA) or plasma-treated water (PTW) offer an increasingly important alternative for the control of microorganisms in hard-to-reach areas found in several industrial applications including the food industry. To this end, we studied the antimicrobial capacity of PTW on the vitality and biofilm formation of Listeria monocytogenes, a common foodborne pathogen.Results: Using a microwave plasma (MidiPLexc), 10 ml of deionized water was treated for 100, 300, and 900 s (pre-treatment time), after which the bacterial biofilm was exposed to the PTW for 1, 3, and 5 min (post-treatment time) for each pre-treatment time, separately. Colony-forming units (CFU) were significantly reduced by 4.7 log10 ± 0.29 log10, as well as the metabolic activity decreased by 47.9 ± 9.47% and the cell vitality by 69.5 ± 2.1%, compared to the control biofilms. LIVE/DEAD staining and fluorescence microscopy showed a positive correlation between treatment and incubation times, as well as reduction in vitality. Atomic force microscopy (AFM) indicated changes in the structure quality of the bacterial biofilm.Conclusion: These results indicate a promising antimicrobial impact of plasma-treated water on Listeria monocytogenes, which may lead to more targeted applications of plasma decontamination in the food industry in the future.

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