scholarly journals Peripheral blood regulatory T cells in patients with diffuse systemic sclerosis (SSc) before and after autologous hematopoietic SCT: a pilot study

2013 ◽  
Vol 49 (3) ◽  
pp. 349-354 ◽  
Author(s):  
J Baraut ◽  
E I Grigore ◽  
F Jean-Louis ◽  
S H Khelifa ◽  
C Durand ◽  
...  
Keyword(s):  
T Cells ◽  
Systemic Sclerosis ◽  
Pilot Study ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Diffuse Systemic Sclerosis ◽  
Before And After

Frequencies of regulatory T cells in the peripheral blood of dogs with primary immune-mediated thrombocytopenia and chronic enteropathy: A pilot study

2014 ◽  
Vol 202 (3) ◽  
pp. 630-633 ◽  
Author(s):  
Maria Volkmann ◽  
Matthew R. Hepworth ◽  
Friederike Ebner ◽  
Sebastian Rausch ◽  
Barbara Kohn ◽  
...  
Keyword(s):  
T Cells ◽  
Pilot Study ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Chronic Enteropathy ◽  
Immune Mediated

The Dynamic Changes in Soluble CD30 and Regulatory T Cells Before and After Solid Organ Transplantations: A Pilot Study

2019 ◽  
Vol 38 (4) ◽  
pp. 137-144 ◽  
Author(s):  
Velislava Terzieva ◽  
Antoaneta Mihova ◽  
Iskra Altankova ◽  
Tsvetelina Velikova ◽  
Deyan Donchev ◽  
...  
Keyword(s):  
T Cells ◽  
Pilot Study ◽  
Regulatory T Cells ◽  
Solid Organ ◽  
Dynamic Changes ◽  
Soluble Cd30 ◽  
Before And After

scholarly journals Regulatory T cells percentage in peripheral blood before and after eradication of <i>Helicobacter pylori</i>

Health ◽  
2014 ◽  
Vol 06 (04) ◽  
pp. 236-242
Author(s):  
Yuka Satoh ◽  
Hatsue Ogawara ◽  
Osamu Kawamura ◽  
Yasuyuki Shimoyama ◽  
Motoyasu Kusano ◽  
...  
Keyword(s):  
T Cells ◽  
Helicobacter Pylori ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Before And After

CD4+T-bet+, CD4+pSTAT3+ and CD8+T-bet+ T cells accumulate in peripheral blood during NZB treatment

2010 ◽  
Vol 17 (5) ◽  
pp. 556-566 ◽  
Author(s):  
Giovanni Frisullo ◽  
Raffaele Iorio ◽  
Domenico Plantone ◽  
Alessandro Marti ◽  
Viviana Nociti ◽  
...  
Keyword(s):  
T Cells ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Peripheral Blood Mononuclear ◽  
Relapsing Remitting ◽  
Before And After ◽  
Circulating T Cells ◽  
Relapsing Remitting Multiple Sclerosis

Circulating T cells and monocytes expressing T-bet, pSTAT1 and pSTAT3 increase in relapsing–remitting multiple sclerosis (RRMS) during relapse. Natalizumab (NZB) is an effective drug in RRMS, but exacerbation of the disease after its discontinuation has been described in some patients. The aim of this research was to study the effect of NZB treatment on circulating lymphomonocyte subpopulations expressing T-bet, pSTAT1, pSTAT3 and CD4+CD25+Foxp3+ regulatory T cells. Flow cytometry was used to evaluate the percentages of circulating CD4+ and CD8+ T cells, CD14+ monocytes and B cells expressing T-bet, pSTAT1, and pSTAT3, and CD4+CD25+Foxp3+ regulatory T cells from RRMS patients before and after 6–12 NZB infusions. In NZB-treated RRMS patients, the percentages of CD4+pSTAT1+ and CD8+pSTAT1+ T cells, CD14+pSTAT1+ monocytes, CD4+T-bet+, CD8+T-bet+ and CD4+pSTAT3+ T cells and CD14+pSTAT3+ monocytes increased after 12 drug infusions and were similar to those observed in untreated relapsing RRMS patients. Otherwise in vitro NZB exposure of peripheral blood mononuclear cells from untreated RRMS patients and controls had no effect. It was concluded that NZB treatment determines an accumulation of CD4+pSTAT1+, CD8+pSTAT1+, CD4+T-bet+, CD8+T-bet+ and CD4+STAT3+ T cells in peripheral blood that may account for the exacerbation of the disease observed in some patients after the discontinuation of the drug.

scholarly journals Regulatory T Cells Fail to Suppress Fast Homeostatic Proliferation In Vitro

Life ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 245
Author(s):  
Daniil Shevyrev ◽  
Valeriy Tereshchenko ◽  
Elena Blinova ◽  
Nadezda Knauer ◽  
Ekaterina Pashkina ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
T Cells ◽  
T Cell ◽  
Regulatory T Cells ◽  
Autoimmune Diseases ◽  
Peripheral Blood ◽  
Treg Cells ◽  
Homeostatic Proliferation ◽  
Suppressive Activity ◽  
Healthy Donors

Homeostatic proliferation (HP) is a physiological process that reconstitutes the T cell pool after lymphopenia involving Interleukin-7 and 15 (IL-7 and IL-15), which are the key cytokines regulating the process. However, there is no evidence that these cytokines influence the function of regulatory T cells (Tregs). Since lymphopenia often accompanies autoimmune diseases, we decided to study the functional activity of Tregs stimulated by HP cytokines from patients with rheumatoid arthritis as compared with that of those from healthy donors. Since T cell receptor (TCR) signal strength determines the intensity of HP, we imitated slow HP using IL-7 or IL-15 and fast HP using a combination of IL-7 or IL-15 with anti-CD3 antibodies, cultivating Treg cells with peripheral blood mononuclear cells (PBMCs) at a 1:1 ratio. We used peripheral blood from 14 patients with rheumatoid arthritis and 18 healthy volunteers. We also used anti-CD3 and anti-CD3 + IL-2 stimulation as controls. The suppressive activity of Treg cells was evaluated in each case by the inhibition of the proliferation of CD4+ and CD8+ cells. The phenotype and proliferation of purified CD3+CD4+CD25+CD127lo cells were assessed by flow cytometry. The suppressive activity of the total pool of Tregs did not differ between the rheumatoid arthritis and healthy donors; however, it significantly decreased in conditions close to fast HP when the influence of HP cytokines was accompanied by anti-CD3 stimulation. The Treg proliferation caused by HP cytokines was lower in the rheumatoid arthritis (RA) patients than in the healthy individuals. The revealed decrease in Treg suppressive activity could impact the TCR landscape during lymphopenia and lead to the proliferation of potentially self-reactive T cell clones that are able to receive relatively strong TCR signals. This may be another explanation as to why lymphopenia is associated with the development of autoimmune diseases. The revealed decrease in Treg proliferation under IL-7 and IL-15 exposure can lead to a delay in Treg pool reconstitution in patients with rheumatoid arthritis in the case of lymphopenia.

scholarly journals Sublingual immunotherapy increases Treg/Th17 ratio in allergic rhinitis

Open Medicine ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. 826-832
Author(s):  
Jiarong Wang ◽  
Liansheng Qiu ◽  
Yimin Chen ◽  
Minyun Chen
Keyword(s):  
T Cells ◽  
Allergic Rhinitis ◽  
Retrospective Study ◽  
Regulatory T Cells ◽  
Visual Analog Scale ◽  
Peripheral Blood ◽  
Sublingual Immunotherapy ◽  
Analog Scale ◽  
Vas Score ◽  
Medication Score

Abstract Background Few studies investigated the effects of sublingual immunotherapy (SLIT) on the peripheral regulatory T cells (Tregs)/Th17 ratio. Objective To investigate the effectiveness of SLIT in children with allergic rhinitis (AR) and the effects on the Tregs/Th17 ratio. Methods This was a retrospective study of children who were treated for AR between April 2017 and March 2018 at one hospital. The patients were grouped according to the treatments they received: SLIT + pharmacotherapy vs pharmacotherapy alone. Results Eighty children (51 boys and 29 girls; 40/group) were included. The visual analog scale (VAS) and medication scores at 1 year in the SLIT + pharmacotherapy group were 2.70 ± 1.08 and 1.1 ± 0.8, respectively, which were lower than at baseline (7.7 ± 1.2 and 3.6 ± 1.0, respectively) (both Ps < 0.05). For the pharmacotherapy group, the VAS score was decreased at 1 year vs baseline (3.3 ± 1.2 vs 7.4 ± 1.0; P < 0.05), but the medication score did not change (P > 0.05). In the SLIT + pharmacotherapy group, the Treg percentage increased, while the Th17 percentage decreased at 1 year (both Ps < 0.01). The percentages of Tregs and Th17s did not change in the pharmacotherapy group (both Ps > 0.05). Conclusions SLIT + pharmacotherapy can increase the Treg percentage and decrease the Th17 percentage in the peripheral blood of children with AR.

scholarly journals Isolation of functional human regulatory T cells (Treg) from the peripheral blood based on the CD39 expression

2009 ◽  
Vol 346 (1-2) ◽  
pp. 55-63 ◽  
Author(s):  
Magis Mandapathil ◽  
Stephan Lang ◽  
Elieser Gorelik ◽  
Theresa L. Whiteside
Keyword(s):  
T Cells ◽  
Regulatory T Cells ◽  
Peripheral Blood

Expansion of CD4+CD25+FOXP3+ Regulatory T Cells in Peripheral Blood and Skin Lesions of Patients with Atopic Dermatitis

2008 ◽  
Vol 121 (2) ◽  
pp. S15-S15
Author(s):  
Y ITO ◽  
T MAKINO ◽  
Y ADACHI ◽  
H HIGASHIYAMA ◽  
T SHIMIZU ◽  
...  
Keyword(s):  
T Cells ◽  
Atopic Dermatitis ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Skin Lesions

Low Frequency of Regulatory T Cells in the Peripheral Blood of Children with Type 1 Diabetes Diagnosed under the Age of Five

2012 ◽  
Vol 60 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Agnieszka Szypowska ◽  
Anna Stelmaszczyk-Emmel ◽  
Urszula Demkow ◽  
Włodzimierz Łuczyński
Keyword(s):  
T Cells ◽  
Type 1 Diabetes ◽  
Regulatory T Cells ◽  
Peripheral Blood ◽  
Low Frequency
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