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https://hdl.handle.net/10316/108735
Title: | Blunted dynamics of adenosine A2A receptors is associated with increased susceptibility to Candida albicans infection in the elderly | Authors: | Rodrigues, Lisa Miranda, Isabel M. Andrade, Geanne M. Mota, Marta Cortes, Luísa Rodrigues, Acácio G. Cunha, Rodrigo A. Gonçalves, Teresa |
Keywords: | ageing; infection; gut; Candida albicans; adenosine A2A receptors; Gerotarget | Issue Date: | 27-Sep-2016 | Publisher: | Impact Journals | Project: | PTDC/SAU-MIC/115598/2009 info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID/NEU/04539/2013 SFRH/BD/74181/2010 |
Serial title, monograph or event: | Oncotarget | Volume: | 7 | Issue: | 39 | Abstract: | Opportunistic gut infections and chronic inflammation, in particular due to overgrowth of Candida albicans present in the gut microbiota, are increasingly reported in the elder population. In aged, adult and young mice, we now compared the relative intestinal over-colonization by ingested C. albicans and their translocation to other organs, focusing on the role of adenosine A2A receptors that are a main stop signal of inflammation. We report that elderly mice are more prone to over-colonization by C. albicans than adult and young mice. This fungal over-growth seems to be related with higher growth rate in intestinal lumen, independent of gut tissues invasion, but resulting in higher GI tract inflammation. We observed a particularly high colonization of the stomach, with increased rate of yeast-to-hypha transition in aged mice. We found a correlation between A2A receptor density and tissue damage due to yeast infection: comparing with young and adults, aged mice have a lower gut A2A receptor density and C. albicans infection failed to increase it. In conclusion, this study shows that aged mice have a lower ability to cope with inflammation due to C. albicans over-colonization, associated with an inability to adaptively adjust adenosine A2A receptors density. | URI: | https://hdl.handle.net/10316/108735 | ISSN: | 1949-2553 | DOI: | 10.18632/oncotarget.11760 | Rights: | openAccess |
Appears in Collections: | I&D CNC - Artigos em Revistas Internacionais FMUC Medicina - Artigos em Revistas Internacionais |
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Blunted-dynamics-of-adenosine-Asub2Asub-receptors-is-associated-with-increased-susceptibility-to-Candida-albicans-infection-in-the-elderlyOncotarget.pdf | 2.39 MB | Adobe PDF | View/Open |
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