| Title: | Age-related differences in percentages of regulatory and effector T lymphocytes and their subsets in healthy individuals and characteristic STAT1/STAT5 signalling response in helper T lymphocytes |
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| Authors: | ID Holcar, Marija (Author)
ID Goropevšek, Aleš (Author)
ID Ihan, Alojz (Author)
ID Avčin, Tadej (Author) |
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| Files: |  Journal_of_Immunology_Research_2015_Holcar_et_al._Age-Related_Differences_in_Percentages_of_Regulatory_and_Effector_T_Lymphocytes_and_Th.pdf (2,39 MB)
MD5: F3B2C681DA3512A13C193A0E80357D25
 http://www.hindawi.com/journals/jir/2015/352934/
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | MF - Faculty of Medicine
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| Abstract: | The dynamic process of the development of the immune system can in itself result in age-related immune malfunctions. In this study, we analysed lymphocyte subsets in the peripheral blood of 60 healthy donors, divided into groups of children, adolescents, and adults, focusing on effector (Teff) and regulatory (Treg) T lymphocytes and STAT1/STAT5 signalling response in helper T lymphocytes (Th) in adults, using flow cytometry. Our results demonstrate a decrease in the percentage of total Tregs and an increase in the percentage of total Teffs with age and a consequential immense increase in the Teff/Treg ratio. The increase of Teffs was most apparent in Th1, Th1Th17, and Th17CD161- subsets. Significant Th lymphocyte STAT1 expression differences were observed between children and adolescents, which were associated with the decrease in activated Tregs. Higher expression of STAT1 was found in FoxP3hi than in FoxP3low Th lymphocytes, while significant IL-2 induced STAT5 phosphorylation differences were found among the subsets of Th lymphocytes in adults. Our study demonstrates age-related changes in circulating Teff and Treg, as well as significant differences in STAT5/STAT1 signalling among FoxP3+ Th lymphocytes, providing new advances in the understanding of immunosenescence. |
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| Keywords: | T lymphocytes, age-related differences, immune system |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2015 |
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| Number of pages: | str. 1-13 |
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| Numbering: | Letn. 2015 |
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| PID: | 20.500.12556/DKUM-66197  |
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| ISSN: | 2314-7156 |
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| UDC: | 616-097 |
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| ISSN on article: | 2314-7156 |
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| COBISS.SI-ID: | 32347353 |
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| DOI: | 10.1155/2015/352934 |
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| NUK URN: | URN:SI:UM:DK:6DTCQK1V |
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| Publication date in DKUM: | 14.06.2017 |
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| Views: | 1397 |
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| Downloads: | 478 |
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| Metadata: |    |
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| Categories: | Misc.
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