CD4+ROR γ t++ and Tregs in a Mouse Model of Diet-Induced Nonalcoholic Steatohepatitis. 2015

Luisa Vonghia, and Nathalie Ruyssers, and Dorien Schrijvers, and Paul Pelckmans, and Peter Michielsen, and Luc De Clerck, and Albert Ramon, and Emilio Jirillo, and Didier Ebo, and Benedicte De Winter, and Chris Bridts, and Sven Francque
Department of Gastroenterology and Hepatology, Antwerp University Hospital, 2560 Antwerp, Belgium ; Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, 70100 Bari, Italy.

OBJECTIVE Inflammatory mediators that cross-talk in different metabolically active organs are thought to play a crucial role in the pathogenesis of Nonalcoholic Steatohepatitis (NASH). This study was aimed at investigating the CD4+RORγt+ T-helper cells and their counterpart, the CD4+CD25+FOXP3+ regulatory T cells in the liver, subcutaneous adipose tissue (SAT), and abdominal adipose tissue (AAT) in a high fat diet (HFD) mouse model. METHODS C57BL6 mice were fed a HFD or a normal diet (ND). Liver enzymes, metabolic parameters, and liver histology were assessed. The expression of CD4+RORγt+ cells and regulatory T cells in different organs (blood, liver, AAT, and SAT) were analyzed by flow cytometry. Cytokine and adipokine tissue expression were studied by RT-PCR. RESULTS Mice fed a HFD developed NASH and metabolic alterations compared to normal diet. CD4+RORγt++ cells were significantly increased in the liver and the AAT while an increase of regulatory T cells was observed in the SAT of mice fed HFD compared to ND. Inflammatory cytokines were also upregulated. CONCLUSIONS CD4+RORγt++ cells and regulatory T cells are altered in NASH with a site-specific pattern and correlate with the severity of the disease. These site-specific differences are associated with increased cytokine expression.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015704 CD4 Antigens 55-kDa antigens found on HELPER-INDUCER T-LYMPHOCYTES and on a variety of other immune cell types. They are members of the immunoglobulin supergene family and are implicated as associative recognition elements in MAJOR HISTOCOMPATIBILITY COMPLEX class II-restricted immune responses. On T-lymphocytes they define the helper/inducer subset. T4 antigens also serve as INTERLEUKIN-15 receptors and bind to the HIV receptors, binding directly to the HIV ENVELOPE PROTEIN GP120. Antigens, CD4,CD4 Molecule,CD4 Receptor,CD4 Receptors,Receptors, CD4,T4 Antigens, T-Cell,CD4 Antigen,Receptors, Surface CD4,Surface CD4 Receptor,Antigen, CD4,Antigens, T-Cell T4,CD4 Receptor, Surface,CD4 Receptors, Surface,Receptor, CD4,Surface CD4 Receptors,T-Cell T4 Antigens,T4 Antigens, T Cell
D050378 T-Lymphocytes, Regulatory CD4-positive T cells that inhibit immunopathology or autoimmune disease in vivo. They inhibit the immune response by influencing the activity of other cell types. Regulatory T-cells include naturally occurring CD4+CD25+ cells, IL-10 secreting Tr1 cells, and Th3 cells. Regulatory T Cell,Regulatory T-Cell,Regulatory T-Lymphocyte,Regulatory T-Lymphocytes,Suppressor T-Lymphocytes, Naturally-Occurring,T-Cells, Regulatory,Th3 Cells,Tr1 Cell,Treg Cell,Regulatory T-Cells,Suppressor T-Cells, Naturally-Occurring,Tr1 Cells,Treg Cells,Cell, Regulatory T,Cell, Th3,Cell, Tr1,Cell, Treg,Cells, Regulatory T,Cells, Th3,Cells, Tr1,Cells, Treg,Naturally-Occurring Suppressor T-Cell,Naturally-Occurring Suppressor T-Cells,Naturally-Occurring Suppressor T-Lymphocyte,Naturally-Occurring Suppressor T-Lymphocytes,Regulatory T Cells,Regulatory T Lymphocyte,Regulatory T Lymphocytes,Suppressor T Cells, Naturally Occurring,Suppressor T Lymphocytes, Naturally Occurring,Suppressor T-Cell, Naturally-Occurring,Suppressor T-Lymphocyte, Naturally-Occurring,T Cell, Regulatory,T Cells, Regulatory,T Lymphocytes, Regulatory,T-Cell, Naturally-Occurring Suppressor,T-Cells, Naturally-Occurring Suppressor,T-Lymphocyte, Regulatory,Th3 Cell
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D057132 Nuclear Receptor Subfamily 1, Group F, Member 3 An orphan nuclear receptor found in the THYMUS where it plays a role in regulating the development and maturation of thymocytes. An isoform of this protein, referred to as RORgammaT, is produced by an alternatively transcribed mRNA. Nuclear Receptor NR1F3,Nuclear Receptor RZR-gamma,Orphan Nuclear Receptor NR1F3,Orphan Nuclear Receptor ROR-gamma,Orphan Nuclear Receptor ROR-gammaT,RAR-related Orphan Receptor C,ROR-C Receptors,ROR-gamma,ROR-gammat,RORgammaT,Nuclear Receptor RZR gamma,Orphan Nuclear Receptor ROR gamma,Orphan Nuclear Receptor ROR gammaT,RAR related Orphan Receptor C,ROR C Receptors,Receptor NR1F3, Nuclear,Receptor RZR-gamma, Nuclear
D059305 Diet, High-Fat Consumption of excessive DIETARY FATS. Diet, High Fat,Diets, High Fat,Diets, High-Fat,High Fat Diet,High Fat Diets,High-Fat Diet,High-Fat Diets

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