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CD4(+)CD25(+)FOXP3(+) T

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https://www.readbyqxmd.com/read/28101786/evaluation-of-t-regulatory-lymphocytes-transcription-factors-in-htlv-1-associated-myelopathy-tropical-spastic-paraparesis-ham-tsp-patients
#1
Sanaz Ahmadi Ghezeldasht, Hamed Sadeghian, Mahmoud Reza Azarpazhooh, Seyyed Ali Akbar Shamsian, Houshang Rafatpanah, Mahmood Mahmoodi, Seyyed Abdolrahim Rezaee
HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is an aggressive neurological disease. The CD4(+)CD25(+) T cell population plays pivotal roles in the maintenance of immunological tolerance and prevention of such autoimmune diseases. In the current study, proviral load (PVL), factor forkhead box p3 (Foxp3), and glucocorticoid-induced tumor necrosis factor receptor-related protein (GITR) gene expression and regulatory T cells (Tregs) counts of 21 HAM/TSP patients and 16 HTLV-1 healthy carriers (ACs) were measured using real-time PCR, TaqMan method, and flow cytometry...
January 18, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28097811/fc-silent-anti-cd154-domain-antibody-effectively-prevents-non-human-primate-renal-allograft-rejection
#2
Steven C Kim, Walter Wakwe, Laura B Higginbotham, David V Mathews, Cynthia P Breeden, Allison C Stephenson, Joe Jenkins, Elizabeth Strobert, Karen Price, Laura Price, Robert Kuhn, Haiqing Wang, Aaron Yamniuk, Suzanne Suchard, Alton B Farris, Thomas C Pearson, Christian P Larsen, Mandy L Ford, Anish Suri, Steven Nadler, Andrew B Adams
The advent of costimulation blockade provides the prospect for targeted therapy with improved graft survival in transplant patients. Perhaps the most effective costimulation blockade in experimental models is the use of reagents to block the CD40/CD154 pathway. Unfortunately, successful clinical translation of anti-CD154 therapy has not been achieved. In an attempt to develop an agent that is as effective as previous CD154 blocking antibodies but lacks the risk of thromboembolism, we evaluated the efficacy and safety of a novel anti-human CD154 domain antibody (dAb, BMS-986004)...
January 17, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28093526/cathepsin-k-deficiency-ameliorates-systemic-lupus-erythematosus-like-manifestations-in-faslpr-mice
#3
Yi Zhou, Huimei Chen, Li Liu, Xueqing Yu, Galina K Sukhova, Min Yang, Vasileios C Kyttaris, Isaac E Stillman, Bruce Gelb, Peter Libby, George C Tsokos, Guo-Ping Shi
Cysteinyl cathepsin K (CatK) is expressed in osteoclasts to mediate bone resorption, but is also inducible under inflammatory conditions. Fas(lpr) mice on a C57BL/6 background develop spontaneous systemic lupus erythematosus-like manifestations. Although normal mouse kidneys expressed negligible CatK, those from Fas(lpr) mice showed elevated CatK expression in the glomeruli and tubulointerstitial space. Fas(lpr) mice also showed elevated serum CatK levels. CatK deficiency in Fas(lpr) mice reduced all tested kidney pathologies, including glomerulus and tubulointerstitial scores, glomerulus complement C3 and IgG deposition, chemokine expression and macrophage infiltration, and serum autoantibodies...
January 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28091550/imbalance-of-th17-treg-cells-in-pathogenesis-of-patients-with-human-leukocyte-antigen-b27-associated-acute-anterior-uveitis
#4
Zhenchao Zhuang, Yuqin Wang, Gejing Zhu, Yunfeng Gu, Liping Mao, Meng Hong, Yali Li, Meiqin Zheng
Th17 and regulatory T cells, involved in the pathogenesis of several autoimmune diseases, are new lineages of CD4+ T helper cells. However, the role of their imbalance in human leukocyte antigen B27-associated acute anterior uveitis has not been elucidated. In our study, the percentages of Th17 and Treg cells, their molecular markers and related factors in peripheral blood of patients and healthy controls were measured by flow cytometry, real-time RT-PCR and ELISA. We observed a remarkable increase of CD4+ and CD4+IL-17+ T cells in peripheral blood of patients compared to controls...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28081241/cd25-cd127-foxp3-cells-represent-a-major-subpopulation-of-cd8-t-cells-in-the-eye-chambers-of-normal-mice
#5
Tomasz Maślanka, Natalia Ziółkowska, Hubert Ziółkowski, Joanna Małaczewska
The aim of this study has been to determine whether eye chambers constitute part of the normal migratory pathway of naive CD4+ and CD8+ T cells in mouse and if natural CD4+CD25+Foxp3+ and CD8+CD25+Foxp3+ regulatory T cells are present within these eye compartments. To this aim, the cells obtained from aqueous humor (AH) of normal mice were phenotyped in terms of the expression CD4, CD8, CD25, CD127 and transcription factor Foxp3. The mean percentage of CD8+ T cells in the total AH lymphocyte population was as high as 28...
2017: PloS One
https://www.readbyqxmd.com/read/28067304/weissella-cibaria-wikim28-ameliorates-atopic-dermatitis-like-skin-lesions-by-inducing-tolerogenic-dendritic-cells-and-regulatory-t-cells-in-balb-c-mice
#6
Seul Ki Lim, Min-Sung Kwon, Jieun Lee, Young Joon Oh, Ja-Young Jang, Jong-Hee Lee, Hae Woong Park, Young-Do Nam, Myung-Ji Seo, Seong Woon Roh, Hak-Jong Choi
The occurrence of atopic dermatitis (AD), a chronic inflammatory skin disease, has been increasing steadily in children and adults in recent decades. In this study, we evaluated the ability of the lactic acid bacterium Weissella cibaria WIKIM28 isolated from gatkimchi, a Korean fermented vegetable preparation made from mustard leaves, to suppress the development of AD induced by 2,4-dinitrochlorobenzene in a murine model. Oral administration of W. cibaria WIKIM28 reduced AD-like skin lesions, epidermal thickening, and serum immunoglobulin E levels...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28066871/cysteine-protease-inhibitor-of-schistosoma-japonicum-a-parasite-derived-negative-immunoregulatory-factor
#7
Lin Chen, Baohua He, Wei Hou, Li He
Studies have shown that cysteine protease inhibitors from some parasites have immunosuppressive effects on the host. We previously have cloned a novel cysteine protease inhibitor from Schistosoma japonicum and purified its recombinant version (protein named rSj-C). Its possible inhibitory effect on the host immune response has not been described.This study shows that rSj-C inhibits lysosomal cysteine protease of murine dendritic cells (DCs). After DCs were incubated with rSj-C and then with soluble adult worm antigen (AWA) of S...
January 9, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28040549/increased-peripheral-cd4-regulatory-t-cells-persist-after-successful-direct-acting-antiviral-treatment-of-chronic-hepatitis-c
#8
Bettina Langhans, Hans Dieter Nischalke, Benjamin Krämer, Annekristin Hausen, Leona Dold, Peer van Heteren, Robert Hüneburg, Jacob Nattermann, Christian P Strassburg, Ulrich Spengler
INTRODUCTION: CD4(+) regulatory T cells (Tregs) expand during chronic hepatitis C virus (HCV) infection, inhibit antiviral immunity and promote fibrosis. Directly acting antivirals (DAA) have revolutionized HCV therapy. However, it is unclear if Tregs are normalized after DAA-induced HCV elimination. METHODS: We analyzed Tregs before (=baseline), at end of therapy (EOT), 12 and 24 weeks (SVR12, SVR24) and long-term (51±14 weeks) after EOT in 26 genotype-1-infected patients successfully treated with sofosbuvir (SOF) plus IFN/ribavirin (n=12) and IFN-free DAA regimens (SOF plus daclatasvir or simeprevir; n=14)...
December 28, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/28035208/regulatory-t-cells-in-hepatitis-b-and-c-virus-infections
#9
REVIEW
Min Kyung Jung, Eui-Cheol Shin
Hepatitis B virus (HBV) and hepatitis C virus (HCV) are hepatotropic viruses that establish chronic persistent infection by effectively escaping the host immune response and can cause immune-mediated liver injury. It has recently become apparent that regulatory T (Treg) cells, specifically CD4(+)CD25(+)Foxp3(+) Treg cells, modulate viral diseases by suppressing antiviral immune responses and regulating inflammatory host injury. The roles of Treg cells in HBV and HCV infections range from suppressing antiviral T cell responses to protecting the liver from immune-mediated damage...
December 2016: Immune Network
https://www.readbyqxmd.com/read/28033649/thrombospondin-derived-peptide-attenuates-sj%C3%A3-gren-s-syndrome-associated-ocular-surface-inflammation-in-mice
#10
Laura Contreras-Ruiz, Fayaz A Mir, Bruce Turpie, Sharmila Masli
Sjögren's syndrome is a second most common rheumatic disease in which autoimmune response targets exocrine glands (salivary and lacrimal glands) resulting in clinical symptoms of dry mouth and dry eye. Inflammation of the lacrimal gland induces tear abnormalities that contribute to the inflammation of the ocular surface, which includes ocular mucosa. Thrombospondin-1 (TSP-1) plays a critical regulatory role in the ocular mucosa and as such TSP-1-/- mice spontaneously develop chronic ocular surface inflammation associated with Sjögren's syndrome (SS)...
December 29, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28031121/-increased-expressions-of-peripheral-pd-1-lymphocytes-and-cd4-cd25-foxp3-t-cells-in-gastric-adenocarcinoma-patients
#11
Hao Li, Songyan Li, Shidong Hu, Guijun Zou, Zilong Hu, Huahua Wei, Yufeng Wang, Xiaohui Du
Objective To detect the frequencies of peripheral programmed death-1(+) (PD-1(+)) lymphocytes and CD4(+)CD25(+)FOXP3(+) regulatory T cells in patients with gastric adenocarcinoma. Methods The study enrolled 29 patients with gastric adenocarcinoma and 29 age- and sex-matched healthy controls. Frequencies of PD-1(+) lymphocytes and CD4(+)CD25(+)FOXP3(+) regulatory T cells were detected using flow cytometry. Results The number of PD-1(+) lymphocytes and CD4(+)CD25(+)FOXP3(+) regulatory T cells in peripheral blood was higher in patients with gastric adenocarcinoma than that in the control group...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28025071/th17-cells-correlate-positively-to-the-structural-and-functional-integrity-of-the-brain-in-bipolar-depression-and-healthy-controls
#12
Sara Poletti, Harm de Wit, Elena Mazza, Annemarie J M Wijkhuijs, Clara Locatelli, Veronica Aggio, Cristina Colombo, Francesco Benedetti, Hemmo A Drexhage
: Abnormalities of T cell-mediated immune activation, in the absence of active somatic immune diseases, have consistently been reported in mood disorders. Apart from being important players in the regulation of cells of the immune system, T cells are essential for normal brain development. We here report studies on the relationship between circulating levels of T helper cells and structural and functional brain imaging in depressed bipolar patients. Since the CCL20-CCR6 axis is an important entry to the brain we differentiated the various T helper cell subpopulations on the basis of their chemokine receptor expression...
December 23, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28008635/regulatory-b-cell-is-critical-in-bone-union-process-through-suppressing-proinflammatory-cytokines-and-stimulating-foxp3-in-treg-cells
#13
Guojing Sun, Yicun Wang, Yunfan Ti, Jun Wang, Jianning Zhao, Hongbo Qian
Bone fractures may result in delayed union (DU) or non-union (NU). Evidence suggest that the skewing of the immune system toward the proinflammatory type is a contributing factor. Because B cells were previously found to infiltrate the fracture healing site at abundant levels, we examined the regulatory B cells (Bregs) in DU/NU patients. In bone fracture patients with normal healing, the frequency of interleukin (IL)-10-expressing B cells was significantly upregulated in the early healing process (6 weeks post-surgery) and was downregulated later on (18 weeks post-surgery), whereas in DU/NU patients, the early upregulation of IL-10-expressing B cells was missing...
December 23, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28007665/cd25-blockade-delays-regulatory-t-cell-reconstitution-and-does-not-prevent-graft-versus-host-disease-after-allogeneic-hematopoietic-cell-transplantation
#14
Frederick L Locke, Joseph Pidala, Barry Storer, Paul J Martin, Michael A Pulsipher, Thomas R Chauncey, Niels Jacobsen, Nicolaus Kröger, Irwin Walker, Susan Light, Bronwen E Shaw, Francisca Beato, Ginna G Laport, Auayporn Nademanee, Armand Keating, Gerard Socie, Claudio Anasetti
Daclizumab, a humanized monoclonal antibody, binds CD25 and blocks formation of the IL-2 receptor on T cells. A study of daclizumab as acute graft-versus-host disease (GVHD) prophylaxis after unrelated bone marrow transplantation was conducted before the importance of CD25(+)FOXP3(+) regulatory T cells (Tregs) was recognized. Tregs can abrogate the onset of GVHD. The relation between Tregs and a graft-versus-malignancy effect is not fully understood. An international, multicenter, double-blind clinical trial randomized 210 adult or pediatric patients to receive 5 weekly doses of daclizumab at 0...
December 19, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28006781/allogeneic-compact-bone-derived-mesenchymal-stem-cell-transplantation-attenuates-the-severity-of-idiopathic-pneumonia-syndrome-in-a-murine-bone-marrow-transplantation-model
#15
Shu-Kai Qiao, Han-Yun Ren, Yong-Jin Shi, Wei Liu
BACKGROUND/AIMS: Idiopathic pneumonia syndrome (IPS) is a serious and life-threatening lung complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT) and currently no effective therapies exist. This study was designed to determine whether transplantation of allogeneic murine compact bone derived- mesenchymal stem cells (CB-MSCs) could prevent the development of IPS. METHODS: We tested the effects of CB-MSCs transplantation on IPS using an established murine model of C57BL/6 (H-2b)→BALB/c (H-2d)...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28004985/cyclophosphamide-enhances-anti-tumor-effects-of-a-fibroblast-activation-protein-%C3%AE-based-dna-vaccine-in-tumor-bearing-mice-with-murine-breast-carcinoma
#16
Qiu Xia, Fei Geng, Fang-Fang Zhang, Chen-Lu Liu, Ping Xu, Zhen-Zhen Lu, Yu Xie, Bo Sun, Hui Wu, Bin Yu, Wei Kong, Xiang-Hui Yu, Hai-Hong Zhang
Cyclophosphamide (CY) is a DNA alkylating agent, which is widely used with other chemotherapy drugs in the treatment of various types of cancer. It can be used not only as a chemotherapeutic but also as an immunomodulatory agent to inhibit IL-10 expression and T regulatory cells (Tregs). Fibroblast activation protein α (FAPα) is expressed in cancer-associated fibroblasts in the tumor microenvironment. Immunotherapy based on FAPα, as a tumor stromal antigen, typically induces specific immune response targeting the tumor microenvironment...
December 22, 2016: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28003154/antipsychotics-influence-toll-like-receptor-tlr-expression-and-its-relationship-with-cognitive-functions-in-schizophrenia
#17
Szabolcs Kéri, Csilla Szabó, Oguz Kelemen
Increasing evidence suggests that altered immune functions are related to the pathophysiology of schizophrenia. Relatively little information is available on Toll-like receptors (TLRs), which are implicated in the recognition of molecular patterns associated with pathogens and internal cellular damage signals. By using immunophenotyping and flow cytometry, we investigated TLRs in CD14+ monocytes, CD4+CD25+Foxp3+ regulatory T cells (Treg), and CD3+CD4+CD25+ activated T cells (Tact) in 35 drug-naïve patients with schizophrenia before and after an 8-week period of antipsychotic treatment with risperidone or olanzapine...
December 19, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28002569/protective-role-of-icos-and-icos-ligand-in-corneal-transplantation-and-in-maintenance-of-immune-privilege
#18
Tomoyuki Kunishige, Hiroko Taniguchi, Misao Terada, Hisaya Akiba, Hideo Yagita, Ryo Abe, Junko Hori
Purpose: The interaction between the inducible costimulatory molecule (ICOS) and ICOS ligand (ICOSL) has been implicated in the differentiation and functions of T cells. The purpose of the present study was to determine the role of ICOS-ICOSL in the immune privilege of corneal allografts. Methods: Expression of ICOS and ICOSL mRNA from mouse eyes was assessed by RT-PCR. Corneas of C57BL/6 mice were orthotopically transplanted into the eyes of ICOS-/- BALB/c recipients and BALB/c wild-type (WT) recipients treated with anti-ICOSL mAb, and graft survival was assessed...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27999289/characterization-of-the-microenvironment-of-nodular-lymphocyte-predominant-hodgkin-lymphoma
#19
Lydia Visser, Rui Wu, Bea Rutgers, Arjan Diepstra, Anke van den Berg
Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is characterized by a low percentage of neoplastic lymphocyte predominant (LP) cells in a background of lymphocytes. The goal of this study is to characterize the microenvironment in NLPHL. Ten NLPHL cases and seven reactive lymph nodes (RLN) were analyzed by flow cytometry for the main immune cells and multiple specific subpopulations. To discriminate between cells in or outside the tumor cell area, we used CD26. We observed significantly lower levels of CD20+ B-cells and CD56+ NK cells and higher levels of CD4+ T-cells in NLPHL in comparison to RLN...
December 16, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27999237/resting-and-activated-natural-tregs-decrease-in-the-peripheral-blood-of-patients-with-atherosclerosis
#20
Mohammadreza Yazdani, Shahdad Khosropanah, Ahmad Hosseini, Mehrnoosh Doroudchi
BACKGROUND: Atherosclerosis is a chronic inflammatory disease affecting large and medium arteries. CD4+ T cells are known to play a role in the progression of the disease. CD4+CD25+Foxp3+ natural Treg (nTreg) cells seem to have a protective role in the disease and their reduction in acute coronary syndrome is recently shown. OBJECTIVE: To investigate the frequency of nTreg subsets in the peripheral blood of patients with atherosclerosis. METHODS: Confirmation of atherosclerosis was done by angiography and 15 ml heparinized blood was obtained from each of the 13 non-diabetic patients and 13 non-diabetic, non-smoker individuals with normal/insignificant coronary artery disease confirmed by angiography...
December 2016: Iranian Journal of Immunology: IJI
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