Journal article
Differential Effects of Dietary versus Exercise Intervention on Intrahepatic MAIT Cells and Histological Features of NAFLD
Nutrients, Vol.14(11), p.2198
05/25/2022
DOI: 10.3390/nu14112198
PMCID: PMC9182470
PMID: 35683998
Abstract
Background: Mucosal-associated invariant T (MAIT) cells promote inflammation in obesity and are implicated in the progression of non-alcoholic fatty liver disease (NAFLD). However, as the intrahepatic MAIT cell response to lifestyle intervention in NAFLD has not been investigated, this work aimed to examine circulating and intrahepatic MAIT cell populations in patients with NAFLD, after either 12 weeks of dietary intervention (DI) or aerobic exercise intervention (EI). Methods: Multicolour flow cytometry was used to immunophenotype circulating and intrahepatic MAIT cells and measure MAIT cell expression (median fluorescence intensity, MFI) of the activation marker CD69 and apoptotic marker CD95. Liver histology, clinical parameters, and MAIT cell populations were assessed at baseline (T0) and following completion (T1) of DI or EI. Results: Forty-five patients completed the study. DI participants showed decreased median (interquartile range) expression of the activation marker CD69 on circulating MAIT cells (T0: 104 (134) versus T1 27 (114) MFI; p = 0.0353) and improvements in histological steatosis grade post-intervention. EI participants showed increased expression of the apoptotic marker CD95, both in circulating (T0: 1549 (888) versus T1: 2563 (1371) MFI; p = 0.0043) and intrahepatic MAIT cells (T0: 2724 (862) versus T1: 3117 (1622) MFI; p = 0.0269). Moreover, the percentage of intrahepatic MAIT cells significantly decreased after EI (T0: 11.1 (14.4) versus T1: 5.3 (9.3)%; p = 0.0029), in conjunction with significant improvements in fibrosis stage and hepatocyte ballooning. Conclusions: These data demonstrate independent benefits from dietary and exercise intervention and suggest a role for intrahepatic MAIT cells in the observed histological improvements in NAFLD.
Details
- Title: Subtitle
- Differential Effects of Dietary versus Exercise Intervention on Intrahepatic MAIT Cells and Histological Features of NAFLD
- Creators
- Sara Naimimohasses - St. James's HospitalPhilip O'Gorman - Trinity Coll Dublin, Discipline Physiotherapy, Dublin 2, IrelandCiara Wright - Glenville Nutr, Dublin 6, IrelandDeirdre Ni Fhloinn - University of SurreyDean Holden - St. James's HospitalNiall Conlon - St. James's HospitalAnn Monaghan - Trinity College DublinMegan Kennedy - Trinity College DublinJohn Gormley - Trinity College DublinPeter Beddy - St. James's HospitalStephen Patrick Finn - St. James's HospitalJoanne Lysaght - Trinity College DublinJacintha O'Sullivan - Trinity Coll Dublin, Sch Med, Dept Surg, Dublin 2, IrelandMargaret R. Dunne - Trinity College DublinSuzanne Norris - St. James's HospitalJ. Bernadette Moore - University of Leeds
- Resource Type
- Journal article
- Publication Details
- Nutrients, Vol.14(11), p.2198
- DOI
- 10.3390/nu14112198
- PMID
- 35683998
- PMCID
- PMC9182470
- NLM abbreviation
- Nutrients
- ISSN
- 2072-6643
- eISSN
- 2072-6643
- Publisher
- Mdpi
- Number of pages
- 16
- Grant note
- HRA-POR2015-1185 / Health Research Board Ireland; Health Research Board - Ireland Trinity Translational Medicine Institute Trinity College Dublin Dean's Initiative Grant 2016
- Language
- English
- Date published
- 05/25/2022
- Academic Unit
- Gastroenterology and Hepatology; Internal Medicine
- Record Identifier
- 9984771650402771
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