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PMID |
Sentence |
1 |
26778312
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The numbers of T helper lymphocytes (CD4+), cytotoxic T lymphocytes (CD8+), natural killer cells (CD335+), and γδ T lymphocytes (WC1+) as well as their activation status [IL-2 receptor (CD25)+ cells] were highly variable between animals, but there was no evident effect of BCS, feeding level, or time.
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2 |
26758063
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Here, we approach this problem from an immunological perspective by examining CD19(+)CD24(hi)CD38(hi) B cells, an important participant in acute and chronic inflammation.
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3 |
26758063
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We find that elderly pneumonia patients have elevated CD19(+)CD24(hi)CD38(hi) B cell frequency compared to healthy individuals.
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4 |
26758063
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This B cell population may express a higher level of IL-10, which has been was shown to suppress CD4(+) T cell-mediated proinflammatory cytokine interferon gamma (IFNg) and tumor necrosis factor alpha (TNFa) production, through an IL-10-dependent mechanism.
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5 |
26758063
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We also observe that the frequency of CD19(+)CD24(hi)CD38(hi) B cell is positively correlated with the frequency of CD4(+)CD25(+)Foxp3(+)Tregs in peripheral blood.
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6 |
26758063
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Moreover, consistent with CD19(+)CD24(hi)CD38(hi) B cell's anti-inflammatory role, we find that pneumonia patients who later developed ALI have reduced level of CD19(+)CD24(hi)CD38(hi) B cells.
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7 |
26758063
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Together, our results demonstrated that CD19(+)CD24(hi)CD38(hi) B cells in pneumonia patients possess regulatory function in vivo, and are associated with a reduced ALI risk.
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8 |
25869609
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Interleukin (IL)-35 is an inhibitory cytokine consisting of IL-12A and Epstein-Barr virus-induced gene 3 (Ebi3) and is required by regulatory T-cells (Tregs) for maximal activity.
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9 |
25869609
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Results show that chronic HBV patients harbour significantly higher levels of Ebi3 mRNA and protein in CD4(+) T-cells compared with healthy volunteers and resolved HBV individuals.
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10 |
25869609
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Ex vivo, IL-35 decreased the proliferation of CD4(+)CD45RA(+) naïve T-cells, especially in CD4(+)CD25(-)CD45RA(+) naïve Teffs.
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11 |
20018909
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Blood and decidual CD4(+) T cells from 18 healthy first-trimester pregnant women were analyzed for expression of Treg-cell markers (CD25, FOXP3, CD127, CTLA4, and human leukocyte antigen-DR [HLA-DR]), chemokine receptors (CCR4, CCR6, and CXCR3), and the proliferation antigen MKI67 by six-color flow cytometry.
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12 |
20018909
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Using chemokine receptor expression profiles of CCR4, CCR6, and CXCR3 as markers for T(H)1, T(H)2, and T(H)17 cells, we showed that T(H)17 cells were nearly absent in decidua, whereas T(H)2-cell frequencies were similar in blood and decidua.
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13 |
20018909
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CCR6(+) T(H)1 cells, reported to secrete high levels of interferon gamma (IFNG), were fewer, whereas the moderately IFNG-secreting CCR6(-) T(H)1 cells were more frequent in decidua compared with blood.
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14 |
17989360
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We have found that, in response to interferon gamma (IFNG), mouse Sertoli cells strongly up-regulate the negative co-stimulatory ligand B7-H1 but remain devoid of positive co-stimulatory molecules.
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15 |
17989360
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Blockade of B7-H1 on the Sertoli cell surface resulted in enhanced proliferation of CD8(+) T cells cocultured with Sertoli cells.
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16 |
17989360
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Moreover, IFNG-stimulated Sertoli cells were found to express, concurrent with B7-H1, MHC class II.
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17 |
17989360
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Interestingly, we found that coculturing T cells with Sertoli cells can indeed induce an increase in CD4(+)CD25(+)(officially known as IL2RA)FOXP3(+) Tregs and a decrease in CD4(+)CD25(-) T cells, suggesting Sertoli cell-mediated Treg conversion; this process was found to be B7-H1-independent.
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18 |
17989360
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Altogether these data show that Sertoli cells are potentially capable of down-regulating the local immune response, on one hand by directly inhibiting CD8(+) T cell proliferation through B7-H1 and, on the other hand, by inducing an increase in Tregs that might suppress other bystander T cells.
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