Intestinal epithelial barrier functions in ageing

Ageing Research Reviews
Jacopo J V BrancaClaudio Nicoletti

Abstract

The intestinal epithelial barrier protects the mucosa of the gastrointestinal (GI)-tract and plays a key role in maintaining the host homeostasis. It encompasses several elements that include the intestinal epithelium and biochemical and immunological products, such as the mucus layer, antimicrobial peptides (AMPs) and secretory immunologlobulin A (sIgA). These components are interlinked with the large microbial community inhabiting the gut to form a highly sophisticated biological system that plays an important role on many aspects of human health both locally and systemically. Like any other organ and tissue, the intestinal epithelial barrier is affected by the ageing process. New insights have surfaced showing that critical functions, including intestinal stem cell regeneration and regulation of the intestinal crypt homeostasis, barrier integrity, production of regulatory cytokines, and epithelial innate immunity to pathogenic antigens change across life. Here we review the age-associated changes of the various components of the intestinal epithelial barrier and we highlight the necessity to elucidate further the mechanisms underlying these changes. Expanding our knowledge in this area is a goal of high medical relevance and...Continue Reading

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Citations

Oct 7, 2020·Journal of Leukocyte Biology·Travis WalrathElizabeth J Kovacs
Feb 1, 2021·Ageing Research Reviews·Alexander S SokolovAlexey A Moskalev
Aug 21, 2020·The Lancet. Gastroenterology & Hepatology·M Isabel LucenaRaúl J Andrade
Apr 4, 2021·International Journal of Molecular Sciences·Juneyoung LeeEun Jeong Park
Jun 23, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Qian LinJun He
Jul 30, 2021·Pharmaceutical Research·Ting DuSong Gao
Oct 11, 2021·Journal of Crohn's & Colitis·Ting-Yi SunDe-Shan Zhou

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