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CD40 Ligand

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https://www.readbyqxmd.com/read/28339909/il-17-and-cd40-ligand-synergistically-stimulate-the-chronicity-of-diabetic-nephropathy
#1
Huey-Liang Kuo, Chiu-Ching Huang, Tze-Yi Lin, Ching-Yuang Lin
Background.: Early stages of diabetic nephropathy (DN) are characterized by an influx of inflammatory cells. Interactions between infiltrating T cells and podocytes may play an important role in the ongoing inflammatory response and remodelling. The aim of this study was to explore the role of IL-17 and CD40 ligand (CD40L) in DN. Methods.: The study design involved a case series. Kidney biopsy samples of 69 patients with type 2 diabetes were assessed for the presence of CD4 +  IL-17 +  T cells...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28314864/systematic-model-of-peripheral-inflammation-after-subarachnoid-hemorrhage
#2
Jude P J Savarraj, Kaushik Parsha, Georgene W Hergenroeder, Liang Zhu, Suhas S Bajgur, Sungho Ahn, Kiwon Lee, Tiffany Chang, Dong H Kim, Yin Liu, H Alex Choi
OBJECTIVE: To investigate inflammatory processes after aneurysmal subarachnoid hemorrhage (aSAH) with network models. METHODS: This is a retrospective observational study of serum samples from 45 participants with aSAH analyzed at multiple predetermined time points: <24 hours, 24 to 48 hours, 3 to 5 days, and 6 to 8 days after aSAH. Concentrations of cytokines were measured with a 41-plex human immunoassay kit, and the Pearson correlation coefficients between all possible cytokine pairs were computed...
March 17, 2017: Neurology
https://www.readbyqxmd.com/read/28298564/proteomic-analysis-of-sera-from-individuals-with-diffuse-cutaneous-systemic-sclerosis-reveals-a-multianalyte-signature-associated-with-clinical-improvement-during-imatinib-mesylate-treatment
#3
D James Haddon, Hannah E Wand, Justin A Jarrell, Robert F Spiera, Paul J Utz, Jessica K Gordon, Lorinda S Chung
OBJECTIVE: Imatinib has been investigated for the treatment of systemic sclerosis (SSc) because of its ability to inhibit the platelet-derived growth factor receptor and transforming growth factor-β signaling pathways, which have been implicated in SSc pathogenesis. In a 12-month open-label clinical trial assessing the safety and efficacy of imatinib in the treatment of diffuse cutaneous SSc (dcSSc), significant improvements in skin thickening were observed. Here, we report our analysis of sera collected during the clinical trial...
March 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28287031/comparison-of-diverse-platelet-activation-markers-as-indicators-for-left-atrial-thrombus-in-atrial-fibrillation
#4
Daniel Tarnowski, David M Poitz, Lina Plichta, Felix M Heidrich, Stephan Wiedemann, Tobias Ruf, Johannes Mierke, Tobias Löhn, Stefanie Jellinghaus, Ruth H Strasser, Karim Ibrahim, Christian Pfluecke
Atrial fibrillation (AF) is well known for being a major risk factor of thromboembolic stroke. We could recently demonstrate an association of monocyte-platelet aggregates (MPAs) with the degree of thrombogenicity in patients with AF. This study investigated platelet activation markers, as potential biomarkers for the presence of left atrial (LA) thrombus in patients with AF. One hundred and eight patients with symptomatic AF underwent transesophageal echocardiography (TEE) before scheduled cardioversion or pulmonary vein isolation...
March 13, 2017: Platelets
https://www.readbyqxmd.com/read/28284329/soluble-cd40-ligand-contributes-to-blood-brain-barrier-breakdown-and-central-nervous-system-inflammation-in-multiple-sclerosis-and-neuromyelitis-optica-spectrum-disorder
#5
Hiroki Masuda, Masahiro Mori, Tomohiko Uchida, Akiyuki Uzawa, Ryohei Ohtani, Satoshi Kuwabara
Soluble CD40 ligand (sCD40L) is reported to disrupt the blood-brain barrier (BBB). Cerebrospinal fluid (CSF) and serum sCD40L levels were measured in 29 multiple sclerosis (MS), 29 neuromyelitis optica spectrum disorder (NMOSD), and 27 disease control (DC) patients. In MS, serum sCD40L levels were higher than in DCs and positively correlated with the CSF/serum albumin ratio (Qalb). In NMOSD, CSF sCD40L levels were significantly increased compared to DCs, and were correlated to Qalb, CSF cell counts, protein concentrations, and interleukin-6 levels...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28275176/human-bronchial-epithelium-orchestrates-dendritic-cell-activation-in-severe-asthma
#6
Delphine Gras, Asuncion Martinez-Anton, Arnaud Bourdin, Celine Garulli, Laure de Senneville, Isabelle Vachier, Joana Vitte, Pascal Chanez
The innate immune response is impaired in asthma, with increased epithelial release of C-X-C motif chemokine ligand (CXCL)8, interleukin (IL)-33 and thymic stromal lymphopoietin (TSLP). We hypothesised that dendritic cells might modulate the hyperresponsive epithelium in severe asthma.For this purpose, we investigated epithelial-dendritic crosstalk in normal and diseased conditions, and because ultrafine particulate matter may affect asthmatic airways, we investigated its impact on this crosstalk. Air-liquid interface cultures of human bronchial epithelial cells (HBEC) of control subjects (cHBEC) or severe asthma patients (saHBEC) were co-cultured with monocyte-derived dendritic cells (moDC)...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28267402/cd40-ligand-is-increased-in-mast-cells-in-psoriasis-and-actinic-keratosis-but-less-so-in-epithelial-skin-carcinomas
#7
Salla Haimakainen, Antti P Kaukinen, Mireille-Maria Suttle, Jukka Pelkonen, Ilkka T Harvima
The expression of CD40 ligand (CD40L) in mast cells was investigated in biopsies from lesional and non-lesional skin samples of patients with psoriasis, actinic keratosis (AK), basal cell carcinoma, and squamous cell carcinoma using a sequential double-staining technique. The percentage of CD40L(+) mast cells was higher in the lesional than in the non-lesional skin (p < .003). Interestingly, this percentage was lower in both carcinomas than in psoriasis and actinic keratosis (p < .025). Cells immunopositive for CD40 receptor were increased in all lesion types but especially so in carcinomas...
March 16, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28261209/gm-csf-inhibits-c-kit-and-scf-expression-by-bone-marrow-derived-dendritic-cells
#8
Amairelys Belen Barroeta Seijas, Sonia Simonetti, Sara Vitale, Daniele Runci, Angela Caterina Quinci, Alessandra Soriani, Mattia Criscuoli, Irene Filippi, Antonella Naldini, Federico Maria Sacchetti, Umberto Tarantino, Francesco Oliva, Eleonora Piccirilli, Angela Santoni, Francesca Di Rosa
Stem cell factor (SCF), the ligand of c-kit, is a key cytokine for hematopoiesis. Hematopoietic precursors express c-kit, whereas differentiated cells of hematopoietic lineage are negative for this receptor, with the exception of NK cells, mast cells, and a few others. While it has long been recognized that dendritic cells (DCs) can express c-kit, several questions remain concerning the SCF/c-kit axis in DCs. This is particularly relevant for DCs found in those organs wherein SCF is highly expressed, including the bone marrow (BM)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28239379/estrogen-receptor-dependent-regulation-of-dendritic-cell-development-and-function
#9
REVIEW
Sophie Laffont, Cyril Seillet, Jean-Charles Guéry
Autoimmunity, infectious diseases and cancer affect women and men differently. Because they tend to develop more vigorous adaptive immune responses than men, women are less susceptible to some infectious diseases but also at higher risk of autoimmunity. The regulation of immune responses by sex-dependent factors probably involves several non-redundant mechanisms. A privileged area of study, however, concerns the role of sex steroid hormones in the biology of innate immune cells, especially dendritic cells (DCs)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28235773/tlr10-suppresses-the-activation-and-differentiation-of-monocytes-with-effects-on-dc-mediated-adaptive-immune-responses
#10
Nicholas J Hess, Christopher Felicelli, Jennifer Grage, Richard I Tapping
TLRs are important pattern-recognition receptors involved in the activation of innate immune responses against foreign pathogens. TLR10 is the only TLR family member without a known ligand, signaling pathway, or clear cellular function. Previous work has shown that TLR10 suppresses proinflammatory cytokine production in response to TLR agonists in a mixed human mononuclear cell population. We report that TLR10 is preferentially expressed on monocytes and suppresses proinflammatory cytokine production resulting from either TLR or CD40 stimulation...
February 24, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28214521/neuroprotective-effect-of-salvianolic-acid-b-against-cerebral-ischemic-injury-in-rats-via-the-cd40-nf-%C3%AE%C2%BAb-pathway-associated-with-suppression-of-platelets-activation-and-neuroinflammation
#11
Shixin Xu, Aiqin Zhong, Huining Ma, Dan Li, Yue Hu, Yingzhi Xu, Junping Zhang
Neuroinflammation plays a critical role in the pathogenesis of ischemia/reperfusion (I/R) injury. Activated platelets are increasingly regarded as initiators and/or amplifiers of inflammatory processes in cerebral I/R injury. Salvianolic acid B (SAB) is the most abundant bioactive compound of Salviae miltiorrhizae, a well-known Chinese herb used to promote blood circulation and eliminating blood stasis. S. miltiorrhizae has been used clinically in Asia for the treatment of ischemic cerebrovascular diseases...
April 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28208125/mean-platelet-volume-in-heterozygous-beta-thalassaemia
#12
Mehmet Ali Cikrikcioglu, Kenan Celik, Iskender Ekinci, Muharrem Nasifov, Aybala Erek Toprak, Guven Cetin, Sema Genc
BACKGROUND/AIM: It is not known why cerebrovascular and cardiovascular ischaemic events are less frequently observed in heterozygous beta thalassaemia (HBT) patients than in the general population. However, we previously reported that serum levels of some platelet function markers, i.e. soluble CD40 ligand and soluble P-selectin, are lower in patients with HBT than in controls. A high mean platelet volume (MPV) is an indicator of in vivo platelet activation and may indicate a tendency to thrombosis...
2017: Acta Haematologica
https://www.readbyqxmd.com/read/28194020/cd103-lung-dendritic-cells-ldcs-induce-stronger-th1-th17-immunity-to-a-bacterial-lung-infection-than-cd11b-hi-ldcs
#13
Sudhanshu Shekhar, Ying Peng, Shuhe Wang, Xi Yang
Recent studies suggest differential roles for CD103+ and CD11b(hi) lung dendritic cells (LDCs) in host defense against viral and bacterial infections. In this study, we examined the contribution of these LDC subsets in protective immunity to chlamydial lung infection using a Chlamydia muridarum mouse infection model. We found that CD103+ LDCs showed higher expression of costimulatory molecules (CD40, CD80 and CD86) and increased production of cytokines (IL-12p70, IL-10, IL-23 and IL-6) compared with CD11b(hi) LDCs, but the expression of programmed death-ligand 1 (PD-L1) was similar between the two subsets...
February 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28185008/physical-activity-initiated-by-employer-induces-improvements-in-a-novel-set-of-biomarkers-of-inflammation-an-8-week-follow-up-study
#14
Lars-Kristian Lunde, Øivind Skare, Hans C D Aass, Asgeir Mamen, Elín Einarsdóttir, Bente Ulvestad, Marit Skogstad
PURPOSE: We investigated the level of pro- and anti-inflammatory biomarkers before and after 8 weeks of unsupervised physical activity (PA) initiated by employer. METHODS: During autumn 2014, background data, blood samples and self-reported exercise level were collected from 76 men and 41 women in a Norwegian road maintenance company. Monocyte chemoattractant protein-1 (MCP-1), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), leptin, adiponectin, p-selectin and CD40 ligand (CD40L) were analyzed...
March 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28182009/hetero-oligomerization-between-the-tnf-receptor-superfamily-members-cd40-fas-and-trailr2-modulate-cd40-signalling
#15
Cristian R Smulski, Marion Decossas, Neila Chekkat, Julien Beyrath, Laure Willen, Gilles Guichard, Raquel Lorenzetti, Marta Rizzi, Hermann Eibel, Pascal Schneider, Sylvie Fournel
TNF receptor superfamily members (TNFRSF) such as CD40, Fas and TRAIL receptor 2 (TRAILR2) participate to the adaptive immune response by eliciting survival, proliferation, differentiation and/or cell death signals. The balance between these signals determines the fate of the immune response. It was previously reported that these receptors are able to self-assemble in the absence of ligand through their extracellular regions. However, the role of this oligomerization is not well understood, and none of the proposed hypotheses take into account potential hetero-association of receptors...
February 9, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28141921/a-tale-of-two-pathways-renewing-the-promise-of-anti-cd40l-blockade
#16
EDITORIAL
A W Thomson, M B Ezzelarab
Amongst the most promising alternative immunosuppressive strategies to overcome the limitations of calcineurin inhibition in organ transplantation has for some time, been the blockade of co-stimulatory pathways that are essential for naïve T cell activation. The most important and best characterized of these are the CD80/86-CD28/CTLA4 and CD40-CD40L(CD154) ligand-receptor pathways. More than twenty years ago, compelling reports (1) showed that selective blocking of these pathways was highly effective in promoting long-term allograft acceptance/tolerance in rodents...
January 31, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28127757/donor-bone-marrow-cells-are-essential-for-inkt-cell-mediated-foxp3-treg-cell-expansion-in-a-murine-model-of-transplantation-tolerance
#17
Satoshi Miyairi, Toshihito Hirai, Rumi Ishii, Masayoshi Okumi, Shinichi Nunoda, Kenji Yamazaki, Yasuyuki Ishii, Kazunari Tanabe
Mixed chimerism induction is the most reliable method for establishing transplantation tolerance. We previously described a novel treatment using a suboptimal dose of anti-CD40 ligand (anti-CD40L) and liposomal formulation of a ligand for invariant natural killer T cells administered to sub-lethally irradiated recipient mice after donor bone marrow cell (BMC) transfer. Recipient mice treated with this regimen showed expansion of a Foxp3-positive regulatory T(Treg) cell phenotype, and formation of mixed chimera...
January 26, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28125840/association-of-high-mobility-group-box-1-with-th-cell-related-cytokines-in-the-vitreous-of-ocular-sarcoidosis-patients
#18
Masaru Takeuchi, Manzo Taguchi, Tomohito Sato, Kyoko Karasawa, Yutaka Sakurai, Kohzou Harimoto, Masataka Ito
Purpose: High-mobility group box-1 (HMGB1) is a nonhistone DNA-binding nuclear protein released from necrotic cells, which is also secreted by activated leukocytes and acts as a primary proinflammatory cytokine. In this study, we compared vitreous HMGB1 levels in ocular sarcoidosis with those in noninflammatory vitreoretinal diseases and evaluated its association with Th cell-related and proinflammatory cytokines. Methods: The study group consisted of 24 patients with ocular sarcoidosis...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28088526/subcutaneous-immunization-with-streptococcus-pneumoniae-gapdh-confers-effective-protection-in-mice-via-tlr2-and-tlr4
#19
Xiaoyu Sun, Jichao Wang, Jie Zhou, Hong Wang, Xiaofang Wang, Jingwen Wu, Yujuan He, Yibing Yin, Xuemei Zhang, Wenchun Xu
The surface localized Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of Streptococcus pneumoniae is best known as housekeeping protein. Currently, GAPDH has been recognized as moonlighting protein and virulent factor. Therefore, we investigate whether GAPDH can act as a suitable vaccine candidate protein to prevent pneumococcal infection. In this study, mice received subcutaneous vaccination with recombinant GAPDH followed by challenge with D39 and 19F showing higher survival rate and lower bacterial loads in nasal washes and lung homogenates than control...
March 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28077657/latent-membrane-protein-1-lmp1-and-lmp2a-collaborate-to-promote-epstein-barr-virus-induced-b-cell-lymphomas-in-a-cord-blood-humanized-mouse-model-but-are-not-essential
#20
Shi-Dong Ma, Ming-Han Tsai, James C Romero-Masters, Erik A Ranheim, Shane M Huebner, Jillian A Bristol, Henri-Jacques Delecluse, Shannon C Kenney
Epstein-Barr virus (EBV) infection is associated with B cell lymphomas in humans. The ability of EBV to convert human B cells into long-lived lymphoblastoid cell lines (LCLs) in vitro requires the collaborative effects of EBNA2 (which hijacks Notch signaling), latent membrane protein 1 (LMP1) (which mimics CD40 signaling), and EBV-encoded nuclear antigen 3A (EBNA3A) and EBNA3C (which inhibit oncogene-induced senescence and apoptosis). However, we recently showed that an LMP1-deleted EBV mutant induces B cell lymphomas in a newly developed cord blood-humanized mouse model that allows EBV-infected B cells to interact with CD4 T cells (the major source of CD40 ligand)...
April 1, 2017: Journal of Virology
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