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https://www.readbyqxmd.com/read/28808159/chronic-brucella-infection-induces-selective-and-persistent-ifn-%C3%AE-dependent-alterations-of-marginal-zone-macrophages-in-the-spleen
#1
Arnaud Machelart, Abir Khadrawi, Aurore Demars, Kevin Willemart, Carl De Trez, Jean-Jacques Letesson, Eric Muraille
The spleen is known as an important filter for blood-borne pathogens that are trapped by specialized macrophages in the marginal zone (MZ): the CD209(+) MZ macrophages (MZMs) and the CD169(+) marginal metallophilic macrophages (MMMs). Acute systemic infection strongly impacts MZ populations and the location of T and B lymphocytes. This phenomenon has been linked to reduced chemokine secretion by stromal cells. Brucella spp. are the causative agent of brucellosis, a widespread zoonotic disease. Here, we used B...
August 14, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28801669/balance-between-estrogens-and-proinflammatory-cytokines-regulates-chemokine-production-involved-in-thymic-germinal-center-formation
#2
Nadine Dragin, Patrice Nancy, José Villegas, Régine Roussin, Rozen Le Panse, Sonia Berrih-Aknin
The early-onset form of Myasthenia Gravis (MG) is prevalent in women and associates with ectopic germinal centers (GCs) development and inflammation in the thymus. we aimed to investigate the contribution of estrogens in the molecular processes involved in thymic GCs formation. We examined expression of genes involved in anti-acetylcholine receptor (AChR) response in MG, MHC class II and α-AChR subunit as well as chemokines involved in GC development (CXCL13, CCL21and CXCL12). In resting conditions, estrogens have strong regulatory effects on thymic epithelial cells (TECs), inducing a decreased protein expression of the above molecules...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798070/cxcl13-levels-are-elevated-in-patients-with-waldenstrom-s-macroglobulinemia-and-are-predictive-of-major-response-to-ibrutinib
#3
Josephine M Vos, Nickolas Tsakmaklis, Christopher J Patterson, Kirsten Meid, Jorge J Castillo, Philip Brodsky, Tomas Ganz, Steven T Pals, Marie José Kersten, Lian Xu, Guang Yang, Steven P Treon, Zachary R Hunter
No abstract text is available yet for this article.
August 10, 2017: Haematologica
https://www.readbyqxmd.com/read/28797085/comparison-of-cytokine-profiles-in-the-aqueous-humor-of-eyes-with-pseudoexfoliation-syndrome-and-glaucoma
#4
Justus G Garweg, Souska Zandi, Isabel B Pfister, Magdalena Skowronska, Christin Gerhardt
PURPOSE: To compare the cyto- and chemokine profiles in the aqueous humor of PEXS eyes in the absence or presence of secondary glaucoma with or without luxation of the intraocular lens (IOL). METHODS: Samples of aqueous humor were collected intraoperatively from 20 healthy controls and from 73 eyes with PEX-syndrome, which was manifested in the absence of any other local or systemic desease. The latter group was sub-devided into eyes with an early form of PEX-syndrome in the absence of complications (PEX, n = 33), those with a late form of PEX-syndrome and glaucoma (PEXG, n = 30), and those with a late form of PEX-syndrome with luxation of the IOL that required surgery (PEXL, n = 10)...
2017: PloS One
https://www.readbyqxmd.com/read/28765149/changes-in-multiple-cytokine-concentrations-in-the-aqueous-humour-of-neovascular-age-related-macular-degeneration-after-2-months-of-ranibizumab-therapy
#5
Shinichi Sakamoto, Hidenori Takahashi, Xue Tan, Yuji Inoue, Yoko Nomura, Yusuke Arai, Yujiro Fujino, Hidetoshi Kawashima, Yasuo Yanagi
PURPOSE: To determine changes in multiple cytokine concentrations in the anterior chamber during the induction phase of ranibizumab treatment in patients with neovascular age-related macular degeneration (AMD). METHODS: This prospective study included 48 treatment-naïve neovascular AMD eyes of 48 patients who received three consecutive monthly injections of ranibizumab at the Japan Community Health Care Organization Tokyo Shinjuku Medical Center between November 2010 and August 2012...
August 1, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28758631/statins-are-ineffective-at-reducing-neuroinflammation-or-prolonging-survival-in-scrapie-infected-mice
#6
James A Carroll, Brent Race, Katie Phillips, James F Striebel, Bruce Chesebro
Neuroinflammation is a prominent component of several neurodegenerative diseases, including multiple sclerosis, Alzheimer's disease, Parkinson's disease, tauopathies, amyotrophic lateral sclerosis and prion diseases. In such conditions, the ability to decrease neuroinflammation by drug therapy may influence disease progression. Statins have been used to treat hyperlipidemia as well as reduce neuroinflammation and oxidative stress in various tissues. In previous studies, treatment of scrapie-infected mice with the type 1 statins, simvastatin or pravastatin, showed a small beneficial effect on survival time...
July 31, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28753658/neuroanatomy-of-the-spleen-mapping-the-relationship-between-sympathetic-neurons-and-lymphocytes
#7
Kaitlin Murray, Dayn Romero Godinez, Ingrid Brust-Mascher, Elaine Nicole Miller, Melanie G Gareau, Colin Reardon
The nervous system plays a profound regulatory role in maintaining appropriate immune responses by signaling to immune cells. These immune cells, including B- and T-cells, can further act as intermediary messengers, with subsets of B- and T-cells expressing choline acetyltransferase (ChAT), the enzyme required for acetylcholine (ACh) synthesis. Neural control of ACh release from ChAT+ T-cells can have powerful immune implications, regulating lymphocyte trafficking, inflammation, and prevent death due to experimental septic shock...
2017: PloS One
https://www.readbyqxmd.com/read/28732135/synovial-immunophenotype-and-anti-citrullinated-protein-antibodies-in-ra-patients-relationship-to-treatment-response-and-radiological-prognosis
#8
Carl Orr, Aurelie Najm, Monika Biniecka, Trudy McGarry, Chin-Teck Ng, Francis Young, Ursula Fearon, Douglas J Veale
OBJECTIVE: Serum anti-citrullinated peptide antibodies (ACPA) may be present before development of rheumatoid arthritis (RA) and may predict more severe, erosive disease. This study examines synovial tissue immunophenotype according to ACPA status in RA patients, response to treatment and erosive status. METHODS: Consecutive RA patients were prospectively recruited and underwent clinical and serological assessment before and after treatment. Radiological assessment was performed at the time of clinical follow up...
July 21, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28730535/the-recombead-borrelia-antibody-index-cxcl13-and-total-igm-index-for-laboratory-diagnosis-of-lyme-neuroborreliosis-in-children
#9
B H Skogman, M Lager, A J Henningsson, I Tjernberg
For laboratory diagnostics of Lyme neuroborreliosis (LNB), the recomBead Borrelia antibody index (AI) assay has shown promising results in a mixed age population, but has not previously been evaluated with specific focus on paediatric patients. The aim of the study was to evaluate the recomBead Borrelia AI assay in cerebrospinal fluid (CSF) for the laboratory diagnosis of LNB in children. We also wanted to explore whether early markers, such as CXCL13 in CSF and/or total IgM index could be useful as complementary diagnostic tools...
July 20, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28692119/improvement-in-orthopedic-outcome-score-and-reduction-in-il-1%C3%AE-cxcl13-and-tnf-%C3%AE-in-synovial-fluid-of-osteoarthritis-patients-following-arthroscopic-knee-surgery
#10
Z M Li, M Li
Knee osteoarthritis (KOA) is a common degenerative joint disease and immune system dysregulation has been implicated in its pathogenesis. The effect of arthroscopic knee surgery, an important method for KOA diagnosis and treatment, on the expression of immune regulators remains poorly understood. We aimed to investigate the clinical efficacy of such surgery and its impact on IL-1β, CXCL13, and TNF-α expression in the knee joint synovial fluid of osteoarthritis patients. Fifty-seven patients having undergone arthroscopic knee surgery in our hospital were included...
July 6, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28691831/-diagnostic-relevance-of-the-chemokine-cxcl13-and-anti-c6-peptide-antibodies-in-patients-with-neuroborreliosis
#11
D Pícha, L Moravcová, D Smíšková
AIM OF THE STUDY: The study was focused on testing the diagnostic value of detection of the chemokine CXCL13 (B lymphocyte chemoattractant) and anti-C6 peptide (synthetic peptide derived from B. burdorferi VlsE protein) antibodies in patients with neuroborreliosis (NB). MATERIAL AND METHODS: One hundred and twenty-nine patients with clinical suspicion of neuroinfection were included in the study. Eighty patients with NB (positive for antibodies in serum and CSF) were subdivided into four groups (A1-A4) based on positivity/negativity of the antibody index (AI) and pleocytosis...
2017: Epidemiologie, Mikrobiologie, Imunologie
https://www.readbyqxmd.com/read/28688097/b-lymphocyte-chemoattractant-cxcl13-is-an-indicator-of-acute-gastrointestinal-gvhd-in-murine-model
#12
Yigeng Cao, Xiaoyi Qin, Na Wang, Erlie Jiang, Mingzhe Han, Yongyong Ma, Bin Liang, Kaiyan Yang, Kang Yu, Haige Ye
Gastrointestinal acute graft-vs.-host disease (GI aGVHD) remains a significant obstacle to the success of allogeneic hematopoietic cell transplantation and is a major cause of morbidity and mortality. In addition, GI aGVHD is often clinically indistinguishable from other causes of GI dysfunction such as conditioning regimen toxicity, infections, or medications, which complicates the diagnosis. Thus, specific biomarkers are needed to help improve diagnosis and obtain a deeper understanding of the cytokine changes in GI aGVHD...
July 7, 2017: Inflammation
https://www.readbyqxmd.com/read/28680761/the-splenic-marginal-zone-shapes-the-phenotype-of-leukemia-b-cells-and-facilitates-their-niche-specific-retention-and-survival
#13
Vanessa Stache, Lydia Verlaat, Marcel Gätjen, Kristina Heinig, Jörg Westermann, Armin Rehm, Uta E Höpken
Microenvironmental regulation in lymphoid tissues is essential for the development of chronic lymphocytic leukemia. We identified cellular and molecular factors provided by the splenic marginal zone (MZ), which alter the migratory and adhesive behavior of leukemic cells. We used the Cxcr5(-/-)Eµ-Tcl1 leukemia mouse model, in which tumor cells are excluded from B cell follicles and instead accumulate within the MZ. Genes involved in MZ B cell development and genes encoding for adhesion molecules were upregulated in MZ-localized Cxcr5(-/-)Eµ-Tcl1 cells...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28661964/cerebrospinal-fluid-b-lymphocyte-chemoattractant-cxcl-13-in-the-diagnosis-of-acute-lyme-neuroborreliosis-in-children
#14
Bjørn Barstad, Dag Tveitnes, Sølvi Noraas, Ingvild Selvik Ask, Maryam Saeed, Franziskus Bosse, Grete Vigemyr, Ilka Huber, Knut Øymar
BACKGROUND: Current markers of Lyme neuroborreliosis (LNB) in children have insufficient sensitivity in the early stage of disease. The B-lymphocyte chemoattractant CXCL13 in the cerebrospinal fluid (CSF) may be useful in diagnosing LNB, but its specificity has not been evaluated in studies including children with clinically relevant differential diagnoses. The aim of this study was to elucidate the diagnostic value of CSF CXCL13 in children with symptoms suggestive of LNB. METHODS: Children with symptoms suggestive of LNB were included prospectively into predefined groups with a high or low likelihood of LNB based on CSF pleocytosis and the detection of Borrelia antibodies or other causative agents...
June 28, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28656528/chitinase-3-like-1-deficient-splenocytes-deteriorated-the-pathogenesis-of-acute-graft-versus-host-disease-via-regulating-differentiation-of-tfh-cells
#15
Zengyao Li, Hao Lu, Jian Gu, Jing Liu, Qin Zhu, Yunjie Lu, Xuehao Wang
Acute graft-versus-host disease (aGVHD) is an intractable complication in transplant patients, limiting the efficacy of this therapy. Chitinase 3-like-1 (CHI3L1), a member of the glycosyl hydrolase 18 family that lacks chitinase activity, plays a critical role in a variety of inflammatory diseases. Here, we investigated the in vitro and in vivo effects of CHI3L1 on the development of aGVHD. In this study, mixed lymphocyte reactions (MLR) in vitro showed that CHI3L1 deficiency in CD4(+) T cell promoted the production of interferon (IFN)-γ and T follicular helper (Tfh)-related cytokines such as interleukin-6 (IL-6) and interleukin-21 (IL-21)...
June 27, 2017: Inflammation
https://www.readbyqxmd.com/read/28637005/cxcl13-is-androgen-responsive-and-involved-in-androgen-induced-prostate-cancer-cell-migration-and-invasion
#16
Long Fan, Qingyi Zhu, Li Liu, Cuicui Zhu, Haojie Huang, Shan Lu, Ping Liu
Androgen receptor (AR) is a key transcription factor playing a critical role in prostate cancer (PCa) initiation and progression. However, the molecular mechanisms of AR action in prostate cancer are not very clear. CXCL13, known as B cell attracting chemokine1 (BCA-1), is a member of CXC chemokine family and relevant to cancer metastasis. This study shows that CXCL13 is an androgen-responsive gene and involved in AR-induced PCa cell migration and invasion. In clinical specimens, expression of CXCL13 in PCa tissues is markedly higher than that in adjacent normal tissues...
June 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28603659/regulated-production-of-cxcl13-within-the-central-nervous-system
#17
David N Irani
The chemokine, C-X-C motif ligand 13 (CXCL13), is constitutively expressed in lymphoid organs and controls the recruitment and compartmentalization of lymphocytes and antigen presenting cells within these specialized structures. Recent data, however, also show induction of this molecule under a variety of circumstances during central nervous system (CNS) inflammation. While its role(s) in the pathogenesis of neoplastic, infectious and autoimmune disorders of the CNS remain incompletely understood, growing evidence suggests that CXCL13 could become a relevant therapeutic target in at least some of these conditions...
October 2016: Journal of Clinical & Cellular Immunology
https://www.readbyqxmd.com/read/28585074/subtype-specific-prognostic-impact-of-different-immune-signatures-in-node-negative-breast-cancer
#18
A-S Heimes, K Madjar, K Edlund, M J Battista, K Almstedt, T Elger, S Krajnak, J Rahnenführer, W Brenner, A Hasenburg, J G Hengstler, M Schmidt
BACKGROUND: The role of different subtypes of immune cells is still a matter of debate. METHODS: We compared the prognostic relevance for metastasis-free survival (MFS) of a B-cell signature (BS), a T-cell signature (TS), and an immune checkpoint signature (CPS) in node-negative breast cancer (BC) using mRNA expression. Microarray-based gene-expression data were analyzed in six previously published cohorts of node-negative breast cancer patients not treated with adjuvant therapy (n = 824)...
June 5, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28570278/cxcl13-producing-tfh-cells-link-immune-suppression-and-adaptive-memory-in-human-breast-cancer
#19
Chunyan Gu-Trantien, Edoardo Migliori, Laurence Buisseret, Alexandre de Wind, Sylvain Brohée, Soizic Garaud, Grégory Noël, Vu Luan Dang Chi, Jean-Nicolas Lodewyckx, Céline Naveaux, Hugues Duvillier, Stanislas Goriely, Denis Larsimont, Karen Willard-Gallo
T follicular helper cells (TFH cells) are important regulators of antigen-specific B cell responses. The B cell chemoattractant CXCL13 has recently been linked with TFH cell infiltration and improved survival in human cancer. Although human TFH cells can produce CXCL13, their immune functions are currently unknown. This study presents data from human breast cancer, advocating a role for tumor-infiltrating CXCL13-producing (CXCR5-) TFH cells, here named TFHX13 cells, in promoting local memory B cell differentiation...
June 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/28564491/abatacept-attenuates-t-follicular-helper-cell-dependent-b-cell-hyperactivity-in-primary-sj%C3%A3-gren-s-syndrome
#20
Gwenny M Verstappen, Petra M Meiners, Odilia B J Corneth, Annie Visser, Suzanne Arends, Wayel H Abdulahad, Rudi W Hendriks, Arjan Vissink, Frans G M Kroese, Hendrika Bootsma
Objective To assess the effect of abatacept (CTLA-4-Ig), which limits T-cell activation, on homeostasis of CD4(+) T-cell subsets and T-cell-dependent B-cell hyperactivity in patients with primary Sjögren's syndrome (pSS). Methods Fifteen pSS patients treated with abatacept were included. Circulating CD4(+) T-cell and B-cell subsets were analyzed by flow cytometry at baseline, on treatment and off treatment. CD4(+) effector T-cell subsets and T regulatory (Treg)-cells were identified based on expression of CD45RA, CXCR3, CCR6, CCR4, CXCR5, programmed death-1 (PD-1), inducible costimulator (ICOS) and FoxP3...
May 31, 2017: Arthritis & Rheumatology
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