CD4-Positive T-Lymphocytes

Publication Title: 
The Cochrane Database of Systematic Reviews

BACKGROUND: Infection with human immunodeficency virus (HIV) and acquired immunodeficency syndrome (AIDS) is a pandemic that has affected millions of people globally. Although major research and clinical initiatives are addressing prevention and cure strategies, issues of quality of life for survivors have received less attention. Massage therapy is proposed to have a positive effect on quality of life and may also have a positive effect on immune function through stress mediation.

Author(s): 
Hillier, Susan L.
Louw, Quinette
Morris, Linzette
Uwimana, Jeanine
Statham, Sue
Publication Title: 
Arthritis and Rheumatism

OBJECTIVE: Chebulagic acid (CHE) from the immature seeds of Terminalia chebula was identified from a natural product library as a potent suppressor of T cell activity. This study examined the effectiveness of CHE against the onset and progression of collagen-induced arthritis (CIA) in mice. METHODS: Arthritis was induced in DBA/1J mice by subcutaneous immunization with bovine type II collagen on days 0 and 21. CHE was administered intraperitoneally for 3 weeks, either as prophylaxis (10 or 20 mg/kg) before disease onset or as therapy (20 mg/kg) after disease onset.

Author(s): 
Lee, Sang-Ik
Hyun, Pung-Mi
Kim, Seung-Hyung
Kim, Kyoung-Shin
Lee, Sang-Keun
Kim, Byoung-Soo
Maeng, Pil Jae
Lim, Jong-Soon
Publication Title: 
International Journal of Molecular Medicine

To evaluate whether an aqueous seed extract of Terminalia chebula Retzius inhibited development of atopy in vivo, we used a 2,4-dinitrofluorobenzene (DNFB)-induced animal model of atopic symptoms to investigate the effects of the extract. We measured CD4+ cell numbers by hematoxylin and eosin (H&E) staining, and determined the expression levels of matrix metalloproteinase (MMP)-9, interleukin (IL)-31, and T-bet genes, in this animal model.

Author(s): 
Nam, Dong-Yoon
Lee, Jin-Man
Heo, Jin-Chul
Lee, Sang-Han
Publication Title: 
International Journal of Oncology

Granulocyte macrophage colony-stimulating factor (GM-CSF) is a key cytokine for the generation and stimulation of dendritic cells (DCs), and it may also play a pivotal role in promoting the survival of DCs. In this study, the feasibility of creating a cancer vaccine using DCs adenovirally transduced with the carcinoembryonic antigen (CEA) gene and the GM-CSF gene was examined. In addition, the effect of the co-transduction of GM-CSF gene on the lifespan of these genetically modified DCs was determined.

Author(s): 
Ojima, Toshiyasu
Iwahashi, Makoto
Nakamura, Masaki
Matsuda, Kenji
Nakamori, Mikihito
Ueda, Kentaro
Naka, Teiji
Katsuda, Masahiro
Miyazawa, Motoki
Yamaue, Hiroki
Publication Title: 
Current Opinion in Cell Biology

The target of rapamycin (TOR) is a crucial intracellular regulator of the immune system. Recent studies have suggested that immunosuppression by TOR inhibition may be mediated by modulating differentiation of both effector and regulatory CD4 T cell subsets. However, it was paradoxically shown that inhibiting TOR signaling has immunostimulatory effects on the generation of long-lived memory CD8 T cells. Beneficial effects of TOR inhibition have also been observed with dendritic cells and hematopoietic stem cells.

Author(s): 
Araki, Koichi
Ellebedy, Ali H.
Ahmed, Rafi
Publication Title: 
Journal of Immunology (Baltimore, Md.: 1950)

Effector memory T cells are effective in controlling acute infections, but central memory T cells play a key role in long-lasting protection against viruses and tumors. In vivo/in vitro challenge by Ag commonly supports the generation of effector memory T cells with limited longevity. To our knowledge, this study demonstrates for the first time in the human system and under rechallenge conditions that targeting IL-2R by partial mammalian target of rapamycin inhibition or blocking IL-2R?

Author(s): 
Schmueck, Michael
Fischer, Annika M.
Hammoud, Ben
Brestrich, Gordon
Fuehrer, Henrike
Luu, Si-Hong
Mueller, Karin
Babel, Nina
Volk, Hans-Dieter
Reinke, Petra
Publication Title: 
Immunotherapy

During chronic infections and cancer, T cells progressively lose function and become exhausted. However, effective T-cell responses are necessary to ultimately control viral infections and tumors. Hence, strategies that either restore endogenous immune responses or provide functional T cells by adoptive immunotherapy need to be explored. CD8 T cells play a prominent role in viral infections, as well as cancer, but CD4 T cells are necessary to support CD8 T-cell function.

Author(s): 
Kamphorst, Alice O.
Ahmed, Rafi
Publication Title: 
Journal of Immunology (Baltimore, Md.: 1950)

The decrease of TCR diversity with aging has never been studied by direct methods. In this study, we combined high-throughput Illumina sequencing with unique cDNA molecular identifier technology to achieve deep and precisely normalized profiling of TCR ? repertoires in 39 healthy donors aged 6-90 y. We demonstrate that TCR ? diversity per 10(6) T cells decreases roughly linearly with age, with significant reduction already apparent by age 40. The percentage of naive T cells showed a strong correlation with measured TCR diversity and decreased linearly up to age 70.

Author(s): 
Britanova, Olga V.
Putintseva, Ekaterina V.
Shugay, Mikhail
Merzlyak, Ekaterina M.
Turchaninova, Maria A.
Staroverov, Dmitriy B.
Bolotin, Dmitriy A.
Lukyanov, Sergey
Bogdanova, Ekaterina A.
Mamedov, Ilgar Z.
Lebedev, Yuriy B.
Chudakov, Dmitriy M.
Publication Title: 
Brain Research Bulletin

In a prospective randomised controlled trial, 48 students were randomly assigned to stress reduction training before exams with self-hypnosis, Johrei or a mock neurofeedback relaxation control. Peripheral blood lymphocyte subpopulations and self-reported stress (Perceived Stress Scale) were measured before training and 1-2 months later as exams approached. Absolute number and percentages of CD3(+)CD4(+) and CD3(+)CD8(+) T lymphocytes, CD3(-)CD56(+) Natural Killer cells (NK cells) and NK cell cytotoxic activity was measured from venous blood.

Author(s): 
Naito, Akira
Laidlaw, Tannis M.
Henderson, Don C.
Farahani, Linda
Dwivedi, Prabudha
Gruzelier, John H.
Publication Title: 
Journal of Biomedicine & Biotechnology

In chronic infectious diseases, such as schistosomiasis, pathogen growth and immunopathology are affected by the induction of a proper balanced Th1/Th2 response to the pathogen and by antigen-triggered activation-induced T cell death. Here, by using S. japonicum infection or schistosome antigens-immunized mouse model, or antigens in vitro stimulation, we report that during the early stage of S.

Author(s): 
Xu, Xinyu
Wen, Xiaoyun
Chi, Ying
He, Lei
Zhou, Sha
Wang, Xuefeng
Zhao, Jiaqing
Liu, Feng
Su, Chuan

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