Article ; Online: Fecal dysbiosis and inflammation in intestinal-specific Cftr knockout mice on regimens preventing intestinal obstruction.
2023 Volume 56, Issue 3, Page(s) 247–264
Abstract: Chronic intestinal inflammation is a poorly understood manifestation of cystic fibrosis (CF), which may be refractory to ion channel CF transmembrane conductance regulator (CFTR) modulator therapy. People with CF exhibit intestinal dysbiosis, which has ... ...
Abstract | Chronic intestinal inflammation is a poorly understood manifestation of cystic fibrosis (CF), which may be refractory to ion channel CF transmembrane conductance regulator (CFTR) modulator therapy. People with CF exhibit intestinal dysbiosis, which has the potential for stimulating intestinal and systemic inflammation. CFTR is expressed in organ epithelia, leukocytes, and other tissues. Here, we investigate the contribution of intestinal epithelium-specific loss of Cftr [iCftr knockout (KO)] to dysbiosis and inflammation in mice treated with either of two antiobstructive dietary regimens necessary to maintain CF mouse models [polyethylene glycol (PEG) laxative or a liquid diet (LiqD)]. Feces collected from iCftr KO mice and their wild-type (WT) sex-matched littermates were used to measure fecal calprotectin to evaluate inflammation and to perform 16S rRNA sequencing to characterize the gut microbiome. Fecal calprotectin was elevated in iCftr KO relative to WT mice that consumed either PEG or LiqD. PEG iCftr KO mice did not show a change in α diversity versus WT mice but demonstrated a significant difference in microbial composition (β diversity) with included increases in the phylum Proteobacteria, the family |
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MeSH term(s) | Animals ; Humans ; Mice ; Clostridioides difficile/genetics ; Cystic Fibrosis/genetics ; Cystic Fibrosis Transmembrane Conductance Regulator/genetics ; Dysbiosis/microbiology ; Expectorants/therapeutic use ; Feces ; Inflammation ; Intestinal Obstruction ; Leukocyte L1 Antigen Complex/therapeutic use ; Mice, Inbred CFTR ; Mice, Knockout ; RNA, Ribosomal, 16S |
Chemical Substances | Cystic Fibrosis Transmembrane Conductance Regulator (126880-72-6) ; Expectorants ; Leukocyte L1 Antigen Complex ; RNA, Ribosomal, 16S ; Cftr protein, mouse |
Language | English |
Publishing date | 2023-12-11 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 2038823-8 |
ISSN | 1531-2267 ; 1094-8341 |
ISSN (online) | 1531-2267 |
ISSN | 1094-8341 |
DOI | 10.1152/physiolgenomics.00077.2023 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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