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ISSN 0003-6838, Applied Biochemistry and Microbiology, 2018, Vol. 54, No. 6, pp. 603–610. © Pleiades Publishing, Inc., 2018. Exogenous and Endogenous Neuroactive Biogenic Amines: Studies with Lactococcus lactis subsp. lactis a, a a a I. R. Vodolazov *, S. D. Dbar , A. V. Oleskin , and L. G. Stoyanova Lomonosov Moscow State University, Biological Faculty, Moscow, 119234 Russia *e-mail: voidset@ya.ru Received May 15, 2018 Abstract—This work demonstrates that Lactococcus lactis subsp. lactis strains that display antimicrobial activity with respect to test cultures (potential pathogens) synthesize biogenic amines. Strains K-205 and F-116 produce submicromolar amounts of dopamine and its 2,3-dihydroxyphenylalanine precursor (DOPA) in a medium that is devoid of dopamine and DOPA. It was also revealed that exogenous neuromediators such as adrenaline (epi- nephrine), dopamine, and serotonin stimulated the growth and antimicrobial activity of some strains at micro- molar concentrations. The growth of L. lactis subsp. lactis strain 194 was threefold accelerated by all the neu- rotransmitters. The stimulatory effect was observed after 6 and 12 h of cultivation. Epinephrine and serotonin failed to produce a statistically signif icant effect on the growth of the other tested strains (K-205, 729, and F-116). Among the neurochemicals under study, dopamine exerted
Applied Biochemistry and Microbiology – Springer Journals
Published: Dec 19, 2018
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