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CD40 Ligand

Ludovic Giloteaux, Maureen R Hanson, Betsy A Keller
BACKGROUND Patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) present with profound fatigue, flu-like symptoms, pain, cognitive impairment, orthostatic intolerance, and post-exertional malaise (PEM), and exacerbation of some or all of the baseline symptoms. CASE REPORT We report on a pair of 34-year-old monozygotic twins discordant for ME/CFS, with WELL, the non-affected twin, and ILL, the affected twin. Both twins performed a two-day cardiopulmonary exercise test (CPET), pre- and post-exercise blood samples were drawn, and both provided stool samples for biochemical and molecular analysis...
October 10, 2016: American Journal of Case Reports
Xiangyu Yao, Jian Wu, Meng Lin, Wenxiang Sun, Xiao He, Channe Gowda, Silvia Bolland, Carole A Long, Rongfu Wang, Xin-Zhuan Su
Both type I interferon (IFN-I) and CD40 play a significant role in various infectious diseases, including malaria and autoimmune disorders. CD40 is mostly known to function in adaptive immunity, but previous observations of elevated CD40 levels early after malaria infection of mice led us to investigate its roles in innate IFN-I responses and disease control. Using a Plasmodium yoelii nigeriensis N67 and C57BL/6 mouse model, we showed that infected CD40-/- mice had reduced STING and serum IFN-β levels day-2 post infection, higher day-4 parasitemia, and earlier deaths...
October 2016: PLoS Pathogens
Maria-Luisa Del Rio, Ana Maria Bravo Moral, Carlos Fernandez-Renedo, Leo Buhler, Jose-Antonio Perez-Simon, Olivier Chaloin, Rafael Alvarez Nogal, Maximino Fernandez-Caso, Jose-Ignacio Rodriguez-Barbosa
CD160 is a glycosylphosphatidylinositol-anchored protein of the immunoglobulin superfamily. It exhibits a pattern of expression coincident in humans and mice that is mainly restricted to cytotoxic cells and to all intestinal intraepithelial T lymphocytes. B- and T-lymphocyte attenuator (BTLA) and CD160 interact with cysteine-rich domain 1 of the extracellular region of Herpesvirus entry mediator (HVEM). CD160 engagement by HVEM can deliver inhibitory signals to a small subset of human CD4 T cells and attenuate its proliferation and cytokine secretion, but can also costimulate natural killer cells or intraepithelial lymphocytes...
September 15, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
Sachiko Tai, Jin-Yan Cheng, Hidee Ishii, Kasumi Shimono, Vincent Zangiacomi, Takatomo Satoh, Tetsuji Hosono, Emiko Suzuki, Ken Yamaguchi, Kouji Maruyama
Beta-tricalcium phosphate (β-TCP) is widely used for bone substitution in clinical practice. Particles of calcium phosphate ceramics including β-TCP act as an inflammation mediators, which is an unfavorable characteristic for a bone substituent or a prosthetic coating material. It is thought that the stimulatory effect of β-TCP on the immune system could be utilized as an immunomodulator. Here, in vitro effects of β-TCP on primary cultured murine dendritic cells (DCs) and macrophages were investigated. β-TCP particles enhanced expression of costimulatory surface molecules, including CD86, CD80, and CD40 in DCs, CD86 in macrophages, and MHC class II and class I molecules in DCs...
September 30, 2016: International Immunopharmacology
Lukasz Antoniewicz, Jenny A Bosson, Jeanette Kuhl, Samy M Abdel-Halim, Anna Kiessling, Fariborz Mobarrez, Magnus Lundbäck
BACKGROUND AND AIMS: The use of electronic cigarettes is increasing dramatically on a global scale and its effects on human health remain uncertain. In the present study, we measured endothelial progenitor cells (EPCs) and microvesicles (MVs) in healthy young volunteers following short-term exposure to inhalation of e-cigarette vapor (ECV) to determine vascular changes. METHODS: Sixteen healthy seldom smokers were randomized into two groups either exposed or not exposed to 10 puffs of ECV for 10 min, in a crossover design...
September 22, 2016: Atherosclerosis
G B Cansu, R Sarı, N Yılmaz, S Özdem, M Çubuk
Introduction: Data regarding cardiovascular risk in patients with non-functional adrenal incidentaloma (NFAI) are limited. The objectives of this study are to investigate markers of subclinical cardiovascular disease like carotid intima media thickness (CIMT), pulse wave velocity (PWV), augmentation index (AIx), soluble CD40 ligand (sCD40L) and leptin levels in NFAI patients without traditional cardiovascular risk factors and healthy control group. Methods: This study involved 35 patients with NFAI (11 males, 24 females; mean age, 52...
September 29, 2016: Experimental and Clinical Endocrinology & Diabetes
Roxanne Coronel, Desyree M Jesus, Lucia Dalle Ore, Joe S Mymryk, Laura Hertel
Oral mucosal Langerhans cells (LC) are likely to play important roles in host defense against infection by human cytomegalovirus (CMV). We previously showed that in vitro-differentiated immature LC (iLC) populations contain smaller amounts of infected cells but produce higher yields than mature LC (mLC) cultures, obtained by iLC stimulation with fetal bovine serum (FBS), CD40 ligand (CD40L) and lipopolysaccharide (LPS). Here, we sought to determine if exposure to select stimuli can improve LC permissiveness to infection, if specific components of the mLC cocktail are responsible for lowering viral yields, if this is due to defects in progeny production or release, and if these restrictions are also effective against reactivated virus...
2016: Frontiers in Microbiology
Maria Sole Chimenti, Alberto Bergamini, Paola Triggianese, Maria Domenica Guarino, Gianfranco Gigliucci, Paola Conigliaro, Carlo Perricone, Roberto Perricone
OBJECTIVES: To investigate the presence of immunoglobulin-like transcript (ILT)4 and costimulatory proteins (CD40, CD80 and CD86), as well as tumour necrosis factor (TNF)-α production in antigen-presenting cells (APCs) from patients with psoriatic arthritis, before and after treatment with the antitumour necrosis factor-α therapy, adalimumab. METHODS: Peripheral blood monocytes from patients with psoriatic arthritis and healthy controls were cultured with CD40 ligand (CD40L) to stimulate differentiation to APCs...
September 2016: Journal of International Medical Research
Fanny Lanternier, Karima Amazzough, Loic Favennec, Marie-France Mamzer-Bruneel, Hendy Abdoul, Jérome Touret, Stéphane Decramer, Julien Zuber, Anne Scemla, Christophe Legendre, Olivier Lortholary, Marie-Elisabeth Bougnoux
BACKGROUND: Diarrhea is a frequent complication of solid organ transplantation. Cryptosporidiosis is classically reported in patients with acquired immunodeficiency syndrome and emerged as a cause of persistent diarrhea in solid organ transplant (SOT) patients. METHODS: Through the ANOFEL Cryptosporidium National Network and the French Transplantation Society, we collected all cryptosporidiosis cases identified in solid organ transplanted patients between 2006 and 2010 in France...
September 27, 2016: Transplantation
Li-Dan Zhao, Di Liang, Xiang-Ni Wu, Yang Li, Jing-Wen Niu, Chen Zhou, Li Wang, Hua Chen, Wen-Jie Zheng, Yun-Yun Fei, Fu-Lin Tang, Yong-Zhe Li, Feng-Chun Zhang, Wei He, Xue-Tao Cao, Xuan Zhang
Aberrant expression of CXCR4 has been indicated to play a role in the pathogenesis of systemic lupus erythematosus (SLE), but the mechanism of CXCR4 dysregulation in SLE is unclear. This study is aimed to explore the clinical significance and possible mechanisms of abnormal CXCR4 expression on B cells from patients with untreated SLE. Expression of CXCR4 on peripheral B cells was determined by flow cytometry and western blotting. Freshly isolated B cells were cultured with exogenous interleukin 21(IL-21) in the presence or absence of CD40 ligand (CD40L) plus anti-IgM antibody (aIgM), and changes in CXCR4 expression were detected...
September 26, 2016: Cellular & Molecular Immunology
Tünde Mester, Nupur Raychaudhuri, Erin F Gillespie, Hong Chen, Terry J Smith, Raymond S Douglas
CONTEXT: Fibrocytes appear to participate in inflammation and tissue remodeling in patients with thyroid-associated ophthalmopathy (TAO). These patients have increased frequencies of circulating TSH receptor (TSHR)- and CD40-positive fibrocytes, suggesting TSHR and CD40 may play roles in proinflammatory cytokine production, which ultimately leads to orbital inflammation and tissue remodeling. OBJECTIVE: To investigate the potential interactions between the TSHR and CD40 signaling pathways and their roles in IL-6 and TNF-α production...
2016: PloS One
Tong Wu, Tünde Mester, Shivani Gupta, Fengyuan Sun, Terry J Smith, Raymond S Douglas
BACKGROUND: Increased numbers of bone marrow-derived progenitor cells, known as fibrocytes, populate the peripheral circulation, orbit, and thyroid of patients with Graves' disease (GD). These cells have been implicated in the development of thyroid-associated ophthalmopathy. They can differentiate into myofibroblasts or adipocytes, produce inflammatory cytokines, and remodel tissue. This study sought to determine whether thyrotropin (TSH) and CD40 ligand (CD40L), implicated in the pathogenesis of GD, induce interleukin-12 (IL-12) in human fibrocytes...
October 18, 2016: Thyroid: Official Journal of the American Thyroid Association
M Miler, N Nikolac, D Segulja, S Kackov Maslac, I Celap, K Altabas, S Sefer, A M Simundic
PURPOSE: Low-grade chronic inflammation is present in patients on peritoneal dialysis (PD) and in metabolic syndrome (MS). Due to possible greater endothelial changes in dialyzed patients, inflammatory response and oxidative stress are probably stronger in patients on PD. The objective of the study was to investigate possible in between adipokines, inflammatory, endothelial and oxidative stress markers between MS patients and patients on PD. METHODS: Concentrations of adipokines (leptin, resistin), inflammatory markers [interleukin-6 (IL-6), soluble tumor necrosis factor alpha receptor (sTNF-R), myeloperoxidase (MPO), monocyte chemoattractant protein 1 (MCP-1)] and endothelial markers [soluble intracellular adhesion molecule-1 (sICAM-1), soluble CD40 ligand (sCD40L)] were determined in 55 MS patients and 18 patients on PD, with flow cytometry, and visfatin concentration was measured with ELISA...
September 6, 2016: Journal of Endocrinological Investigation
Satomi Hisamoto, Shinji Shimoda, Kenichi Harada, Sho Iwasaka, Shinya Onohara, Yong Chong, Minoru Nakamura, Yuki Bekki, Tomoharu Yoshizumi, Toru Ikegami, Yoshihiko Maehara, Xiao-Song He, M Eric Gershwin, Koichi Akashi
Understanding the mechanisms of chronic inflammation in primary biliary cholangitis (PBC) is essential for successful treatment. Earlier work has demonstrated that patients with PBC have reduced expression of the anion exchanger 2 (AE2) on biliary epithelial cells (BEC) and deletion of AE2 gene has led to a PBC-like disorder in mice. To directly address the role of AE2 in preventing PBC pathogenesis, we took advantage of our ability to isolate human BEC and autologous splenic mononuclear cells (SMC). We studied the influence of hydrophobic bile acids, in particular, glycochenodeoxycholic acid (GCDC), on AE2 expression in BEC and the subsequent impact on the phenotypes of BEC and local inflammatory responses...
August 31, 2016: Journal of Autoimmunity
Juan Pablo Mackern-Oberti, Evelyn L Jara, Claudia A Riedel, Alexis M Kalergis
Hormonal homeostasis is crucial for keeping a competent and healthy immune function. Several hormones can modulate the function of various immune cells such as dendritic cells (DCs) by influencing the initiation of the immune response and the maintenance of peripheral tolerance to self-antigens. Hormones, such as estrogens, prolactin, progesterone and glucocorticoids may profoundly affect DCs differentiation, maturation and function leading to either a pro-inflammatory or an anti-inflammatory (or tolerogenic) phenotype...
September 1, 2016: Archivum Immunologiae et Therapiae Experimentalis
Sibel Durlanik, Lucie Loyal, Regina Stark, Özen Sercan Alp, Anett Hartung, Andreas Radbruch, Matthias von Herrath, Nadine Matzmohr, Marco Frentsch, Andreas Thiel
CD40-CD40 Ligand (CD40L) signaling plays multiple indispensable roles in cellular and humoral immunity. Impaired memory T-cell responses in the absence of CD40L have been well documented, but the requirement of this interaction for efficient priming of CD8(+) T cells especially under inflammatory conditions has been under debate. In contrast to previous publications, we report here that virus-specific CD8(+) T-cell responses as well as viral clearance are affected not only in the memory but also in the effector phase in CD40L(-/-) mice infected with lymphocytic choriomeningitis virus (LCMV) Armstrong strain...
August 26, 2016: European Journal of Immunology
Amalia Azzariti, Oronzo Brunetti, Letizia Porcelli, Giusi Graziano, Rosa Maria Iacobazzi, Michele Signorile, Aldo Scarpa, Vito Lorusso, Nicola Silvestris
Pancreas ductal adenocarcinoma lacks predictive biomarkers. CD40 is a member of the tumor necrosis factor superfamily. CD40-sCD40L interaction is considered to contribute to the promotion of tumor cell growth and angiogenesis. The aim of the present study was to investigate the role of serum sCD40L as a predictor in metastatic pancreatic cancer. We evaluated 27 consecutive pancreatic cancer patients treated with FOLFIRINOX (21 patients) or gemcitabine plus nab-paclitaxel combination (six patients). The sCD40L level was measured in serum by enzyme-linked immunosorbent assay at baseline, at first evaluation (all patients), and at time to progression (18 patients)...
2016: OncoTargets and Therapy
Otavio Cabral-Marques, Rodrigo Nalio Ramos, Lena F Schimke, Taj Ali Khan, Eduardo Pinheiro Amaral, Caio César Barbosa Bomfim, Osvaldo Reis Junior, Tabata Takahashi França, Christina Arslanian, Joanna Darck Carola Correia Lima, Cristina Worm Weber, Janaíra Fernandes Ferreira, Fabiola Scancetti Tavares, Jing Sun, Maria Regina D Imperio Lima, Marília Seelaender, Vera Lucia Garcia Calich, José Alexandre Marzagão Barbuto, Beatriz Tavares Costa-Carvalho, Gabriela Riemekasten, Gisela Seminario, Liliana Bezrodnik, Luigi Notarangelo, Troy R Torgerson, Hans D Ochs, Antonio Condino-Neto
BACKGROUND: CD40 ligand (CD40L) deficiency predisposes to opportunistic infections, including those caused by fungi and intracellular bacteria. Studies of CD40L-deficient patients reveal the critical role of CD40L-CD40 interaction for the function of T-, B-, and dendritic cells. However, the consequences of CD40L deficiency on macrophage function remain to be investigated. OBJECTIVES: To determine the impact of CD40L absence on monocytes-derived macrophage (MDMs) responses...
August 20, 2016: Journal of Allergy and Clinical Immunology
Qikang Ying, Tiejun Ma, Linfeng Cheng, Xiaoxiao Zhang, Agnieszka D Truax, Ruixue Ma, Ziyu Liu, Yingfeng Lei, Liang Zhang, Wei Ye, Fanglin Zhang, Zhikai Xu, Lei Shang, Rongrong Liu, Fang Wang, Xingan Wu
Infection of hantaan virus (HTNV) usually causes hemorrhagic fever with renal syndrome (HFRS). China has the worst epidemic incidence of HFRS as well as high fatality. Inactivated whole virus has been used for HFRS vaccination, however there are still problems such as safety concerns. CD40 ligand (CD40L) and granulocyte macrophage colony-stimulating factor (GM-CSF) are well-known immune stimulating molecules that can enhance antigen presenting, lymphocytes activation and maturation, incorporation of CD40L and GM-CSF to the surface of virus like particles (VLPs) can greatly improve the vaccination effect...
August 17, 2016: Oncotarget
Konstantinos Samitas, Carina Malmhäll, Madeleine Rådinger, Patricia Ramos-Ramirez, You Lu, Tünde Deák, Maria Semitekolou, Mina Gaga, Margareta Sjöstrand, Jan Lötvall, Apostolos Bossios
BACKGROUND: B cells, key cells in allergic inflammation, differentiate in the bone marrow and their precursors include pro-B, pre-B and immature B cells. Eosinophil progenitor cells increase in the lung after allergen exposure. However, the existence and possible role of B cell precursors in the lung during allergic inflammation remains elusive. METHODS: A BALB/c mouse model of allergic airway inflammation was utilized to perform phenotypic and quantification analyses of pro-B and pre-B cells in the lung by flow cytometry...
2016: PloS One
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