AI Article Synopsis
- The study aimed to investigate changes in specific T cell types (CD4, CD8, and Treg) in participants with and without type 2 diabetes after an oral glucose tolerance test (OGTT).
- 19 participants with type 2 diabetes and 21 without underwent a 75-g OGTT, and their blood samples were analyzed before and at 60 and 120 minutes post-glucose consumption.
- Results showed an increase in CD4 T cells and a decrease in CD8 T cells in both groups after glucose loading, indicating that glucose intake influences the balance of T lymphocyte subsets, independent of diabetes status.
Article Abstract
Objective: The aim of this study was to examine the fluctuations in CD4 T cells, CD8 T cells, and natural CD4CD25FoxP3T-regulatory (Treg) cells following an oral glucose tolerance test (OGTT) in participants with and those without type 2 diabetes (T2DM).
Methods: 19 Japanese participants with T2DM (DM group) and 21 participants without diabetes (non-DM group) were recruited and underwent a 75-g OGTT. The cell numbers of leukocytes, lymphocytes, and the T cell compartment, such as CD4, CD8, and Treg, were calculated for blood samples obtained after an overnight 12 h fast and during a 75-g OGTT at 60 and 120 min.
Results: Before glucose loading, no differences in the cell numbers of leukocytes, lymphocytes, CD4, CD8, and Treg were observed between the DM group and the non-DM group. The proportion of CD8 was significantly reduced, whereas the proportion of CD4 was significantly increased, after 120 min of glucose loading in both groups. The proportion of Treg was not affected. Furthermore, a significant positive correlation was observed between the AUC of CD8 and the change in the free fatty acid level following the OGTT (ρ = 0.39, < 0.05), but not that of glucose or insulin.
Conclusion: The proportion of CD4 T cells was increased and that of CD8 T cells was reduced after glucose loading in both subjects with and without diabetes. These findings suggest that glucose loading dynamically affects the balance of the circulating T lymphocyte subset, regardless of glucose tolerance.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5870166 | PMC |
| http://dx.doi.org/10.3389/fendo.2018.00081 | DOI Listing |
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