A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Colonic Mucosal Microbiota and Association of Bacterial Taxa with the Expression of Host Antimicrobial Peptides in Pediatric Ulcerative Colitis




TekijätJonna Jalanka, Jing Cheng, Kaisa Hiippala, Jarmo Ritari, Jarkko Salojärvi, Tarja Ruuska, Marko Kalliomäki, Reetta Satokari

KustantajaMDPI

Julkaisuvuosi2020

JournalInternational Journal of Molecular Sciences

Tietokannassa oleva lehden nimiINTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

Lehden akronyymiINT J MOL SCI

Artikkelin numeroARTN 6044

Vuosikerta21

Numero17

Sivujen määrä13

eISSN1422-0067

DOIhttps://doi.org/10.3390/ijms21176044

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/50374610


Tiivistelmä
Inflammatory bowel diseases (IBD), ulcerative colitis (UC) and Crohn's disease (CD), are chronic debilitating disorders of unknown etiology. Over 200 genetic risk loci are associated with IBD, highlighting a key role for immunological and epithelial barrier functions. Environmental factors account for the growing incidence of IBD, and microbiota are considered as an important contributor. Microbiota dysbiosis can lead to a loss of tolerogenic immune effects and initiate or exacerbate inflammation. We aimed to study colonic mucosal microbiota and the expression of selected host genes in pediatric UC. We used high-throughput 16S rDNA sequencing to profile microbiota in colonic biopsies of pediatric UC patients (n= 26) and non-IBD controls (n= 27). The expression of 13 genes, including five for antimicrobial peptides, in parallel biopsies was assessed with qRT-PCR. The composition of microbiota between UC and non-IBD differed significantly (PCoA,p= 0.001). UC children had a decrease in Bacteroidetes and an increase in several family-level taxa including Peptostreptococcaceae and Enterobacteriaceae, which correlated negatively with the expression of antimicrobial peptides REG3G and DEFB1, respectively. Enterobacteriaceae correlated positively with the expression siderophore binding protein LCN2 and Betaproteobacteria negatively with DEFB4A expression. The results indicate that reciprocal interaction of epithelial microbiota and defense mechanisms play a role in UC.

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Last updated on 2024-26-11 at 20:44