Role of Neurochemicals in the Interaction between the Microbiota and the Immune and the Nervous System of the Host Organism

Oleskin, A.V.; Shenderov, B.A.; Rogovsky, V.S.

Авторы: Oleskin A.V., Shenderov B.A., Rogovsky V.S.
Журнал: Probiotics and Antimicrobial Proteins
Том: 9
Номер: 3
Год издания: 2017
Издательство: Springer Pub. Co.,
Местоположение издательства: United States
Первая страница: 215
Последняя страница: 234
DOI: 10.1007/s12602-017-9262-1
Аннотация: This work is concerned with the role of evolutionary conserved substances, neurotransmitters, and neurohormones, within the complex framework of the microbial consortium–immune system–nervous system axis in the human or animal organism. Although the operation of each of these systems per se is relatively well understood, their combined effects on the host organism still await further research. Drawing on recent research on host-produced and microbial low-molecular-weight neurochemicals such as biogenic amines, amino acids, and short-chain fatty acids (SCFAs), we suggest that these mediators form a part of a universal neurochemical Blanguage.^ It mediates the whole gamut of harmonious and disharmonious interactions between (a) the intestinal microbial consortium, (b) local and systemic immune cells, and (c) the central and peripheral nervous system. Importantly, the ongoing microbiota–host interactivity is bidirectional. We present evidence that a large number of microbially produced low-molecular-weight compounds are identical or homologous to mediators that are synthesized by immune or nervous cells and, therefore, can bind to the corresponding host receptors. In addition, microbial cells specifically respond to host-produced neuromediators/ neurohormones because they have adapted to them during the course of many millions of years of microbiota–host coevolution. We emphasize that the terms Bmicrobiota^ and Bmicrobial consortium^ are to be used in the broadest sense, so as to include, apart from bacteria, also eukaryotic microorganisms. These are exemplified by the mycobiota whose role in the microbial consortium–immune system–nervous system axis researchers are only beginning to elucidate. In light of the above, it is imperative to reform the current strategies of using probiotic microorganisms and their metabolites for treating and preventing dysbiosis-related diseases. The review demonstrates, in the example of novel probiotics (psychobiotics), that many target-oriented probiotic preparations produce important side effects on a wide variety of processes in the host organism. In particular, we should take into account probiotics’ capacity to produce mediators that can considerably modify the operation of the microecological, immune, and nervous system of the human organism
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