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Characterization of gut contractility and microbiota in patients with severe chronic constipation

Chronic constipation (CC) is one of the most common gastrointestinal disorders worldwide. Its pathogenesis, however, remains largely unclear. The purpose of the present work was to gain an insight into the role of contractility and microbiota in the etiology of CC. To this end, we studied spontaneou...

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Autores principales: Yarullina, Dina R., Shafigullin, Marat U., Sakulin, Kirill A., Arzamastseva, Anastasiia A., Shaidullov, Ilnar F., Markelova, Maria I., Grigoryeva, Tatiana V., Karpukhin, Oleg Yu., Sitdikova, Guzel F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7367488/
https://www.ncbi.nlm.nih.gov/pubmed/32678865
http://dx.doi.org/10.1371/journal.pone.0235985
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author Yarullina, Dina R.
Shafigullin, Marat U.
Sakulin, Kirill A.
Arzamastseva, Anastasiia A.
Shaidullov, Ilnar F.
Markelova, Maria I.
Grigoryeva, Tatiana V.
Karpukhin, Oleg Yu.
Sitdikova, Guzel F.
author_facet Yarullina, Dina R.
Shafigullin, Marat U.
Sakulin, Kirill A.
Arzamastseva, Anastasiia A.
Shaidullov, Ilnar F.
Markelova, Maria I.
Grigoryeva, Tatiana V.
Karpukhin, Oleg Yu.
Sitdikova, Guzel F.
author_sort Yarullina, Dina R.
collection PubMed
description Chronic constipation (CC) is one of the most common gastrointestinal disorders worldwide. Its pathogenesis, however, remains largely unclear. The purpose of the present work was to gain an insight into the role of contractility and microbiota in the etiology of CC. To this end, we studied spontaneous and evoked contractile activity of descending colon segments from patients that have undergone surgery for refractory forms of CC. The juxta-mucosal microbiota of these colon samples were characterized with culture-based and 16S rRNA sequencing techniques. In patients with CC the spontaneous colonic motility remained unchanged compared to the control group without dysfunction of intestinal motility. Moreover, contractions induced by potassium chloride and carbachol were increased in both circular and longitudinal colonic muscle strips, thus indicating preservation of contractile apparatus and increased sensitivity to cholinergic nerve stimulation in the constipated intestine. In the test group, the gut microbiota composition was assessed as being typically human, with four dominant bacterial phyla, namely Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria, as well as usual representation of the most prevalent gut bacterial genera. Yet, significant inter-individual differences were revealed. The phylogenetic diversity of gut microbiota was not affected by age, sex, or colonic anatomy (dolichocolon, megacolon). The abundance of butyrate-producing genera Roseburia, Coprococcus, and Faecalibacterium was low, whereas conventional probiotic genera Lactobacillus and Bifidobacteria were not decreased in the gut microbiomes of the constipated patients. As evidenced by our study, specific microbial biomarkers for constipation state are absent. The results point to a probable role played by the overall gut microbiota at the functional level. To our knowledge, this is the first comprehensive characterization of CC pathogenesis, finding lack of disruption of motor activity of colonic smooth muscle cells and insufficiency of particular members of gut microbiota usually implicated in CC.
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spelling pubmed-73674882020-08-05 Characterization of gut contractility and microbiota in patients with severe chronic constipation Yarullina, Dina R. Shafigullin, Marat U. Sakulin, Kirill A. Arzamastseva, Anastasiia A. Shaidullov, Ilnar F. Markelova, Maria I. Grigoryeva, Tatiana V. Karpukhin, Oleg Yu. Sitdikova, Guzel F. PLoS One Research Article Chronic constipation (CC) is one of the most common gastrointestinal disorders worldwide. Its pathogenesis, however, remains largely unclear. The purpose of the present work was to gain an insight into the role of contractility and microbiota in the etiology of CC. To this end, we studied spontaneous and evoked contractile activity of descending colon segments from patients that have undergone surgery for refractory forms of CC. The juxta-mucosal microbiota of these colon samples were characterized with culture-based and 16S rRNA sequencing techniques. In patients with CC the spontaneous colonic motility remained unchanged compared to the control group without dysfunction of intestinal motility. Moreover, contractions induced by potassium chloride and carbachol were increased in both circular and longitudinal colonic muscle strips, thus indicating preservation of contractile apparatus and increased sensitivity to cholinergic nerve stimulation in the constipated intestine. In the test group, the gut microbiota composition was assessed as being typically human, with four dominant bacterial phyla, namely Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria, as well as usual representation of the most prevalent gut bacterial genera. Yet, significant inter-individual differences were revealed. The phylogenetic diversity of gut microbiota was not affected by age, sex, or colonic anatomy (dolichocolon, megacolon). The abundance of butyrate-producing genera Roseburia, Coprococcus, and Faecalibacterium was low, whereas conventional probiotic genera Lactobacillus and Bifidobacteria were not decreased in the gut microbiomes of the constipated patients. As evidenced by our study, specific microbial biomarkers for constipation state are absent. The results point to a probable role played by the overall gut microbiota at the functional level. To our knowledge, this is the first comprehensive characterization of CC pathogenesis, finding lack of disruption of motor activity of colonic smooth muscle cells and insufficiency of particular members of gut microbiota usually implicated in CC. Public Library of Science 2020-07-17 /pmc/articles/PMC7367488/ /pubmed/32678865 http://dx.doi.org/10.1371/journal.pone.0235985 Text en © 2020 Yarullina et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yarullina, Dina R.
Shafigullin, Marat U.
Sakulin, Kirill A.
Arzamastseva, Anastasiia A.
Shaidullov, Ilnar F.
Markelova, Maria I.
Grigoryeva, Tatiana V.
Karpukhin, Oleg Yu.
Sitdikova, Guzel F.
Characterization of gut contractility and microbiota in patients with severe chronic constipation
title Characterization of gut contractility and microbiota in patients with severe chronic constipation
title_full Characterization of gut contractility and microbiota in patients with severe chronic constipation
title_fullStr Characterization of gut contractility and microbiota in patients with severe chronic constipation
title_full_unstemmed Characterization of gut contractility and microbiota in patients with severe chronic constipation
title_short Characterization of gut contractility and microbiota in patients with severe chronic constipation
title_sort characterization of gut contractility and microbiota in patients with severe chronic constipation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7367488/
https://www.ncbi.nlm.nih.gov/pubmed/32678865
http://dx.doi.org/10.1371/journal.pone.0235985
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