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https://www.readbyqxmd.com/read/29920694/increased-susceptibility-to-oral-trichuris-muris-infection-in-the-specific-absence-of-cxcr5-cd11c-cells
#1
Barry M Bradford, David S Donaldson, Ruth Forman, Kathryn J Else, Neil A Mabbott
Trichuris muris is a natural mouse helminth pathogen which establishes infection specifically in the caecum and proximal colon. The rapid expulsion of T. muris in resistant mouse strains is associated with the induction of a protective T helper cell type 2 (Th2)-polarised immune response. Susceptible mouse strains, in contrast, mount an inappropriate Th1 response to T. muris infection. Expression of the chemokine CXCL13 by stromal follicular dendritic cells attracts CXCR5-expressing cells towards the B cell follicles...
June 19, 2018: Parasite Immunology
https://www.readbyqxmd.com/read/29899118/endocytosis-is-required-for-c-x-c-chemokine-receptor-type-4-cxcr4-mediated-akt-activation-and-anti-apoptotic-signaling
#2
Elizabeth J English, Sarah A Mahn, Adriano Marchese
Signaling activated by binding of the C-X-C motif chemokine ligand CXCL12 to its cognate G protein-coupled receptor (GPCR), chemokine C-X-C motif receptor 4 (CXCR4), is linked to metastatic disease. Yet the mechanisms governing CXCR4 signaling remain poorly understood. Here we show that endocytosis and early endosome antigen 1 (EEA1), which is part of the endosome fusion machinery, are required for CXCL12-mediated AKT Ser/Thr kinase (Akt) signaling selective for certain Akt substrates. Pharmacological inhibition of endocytosis partially attenuated CXCL12-induced phosphorylation of Akt, but not phosphorylation of ERK-1/2...
June 13, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29897143/analysis-of-possible-structures-of-inducible-skin-associated-lymphoid-tissue-in-lupus-erythematosus-profundus
#3
Toshiaki Kogame, Ryosuke Yamashita, Masahiro Hirata, Tatsuki R Kataoka, Hisashi Kamido, Chiyuki Ueshima, Miho Matsui, Takashi Nomura, Kenji Kabashima
Lupus erythematosus profundus (LEP) is a variant of lupus erythematosus, involving the deep dermis and subcutaneous fat. LEP is characterized by the presence of lymphoid follicles (LF) and germinal centers (GC). However, it remains unknown whether these lymphoid structures correspond to the lymphoid tissues such as cutaneous tertiary lymphoid organs (TLO). Previously, we identified dynamically orchestrated cellular elements in murine contact dermatitis that resembled lymphoid structures, which we termed inducible skin-associated lymphoid tissues (iSALT)...
June 13, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29892065/a-transcriptionally-and-functionally-distinct-pd-1-cd8-t-cell-pool-with-predictive-potential-in-non-small-cell-lung-cancer-treated-with-pd-1-blockade
#4
Daniela S Thommen, Viktor H Koelzer, Petra Herzig, Andreas Roller, Marcel Trefny, Sarah Dimeloe, Anna Kiialainen, Jonathan Hanhart, Catherine Schill, Christoph Hess, Spasenija Savic Prince, Mark Wiese, Didier Lardinois, Ping-Chih Ho, Christian Klein, Vaios Karanikas, Kirsten D Mertz, Ton N Schumacher, Alfred Zippelius
Evidence from mouse chronic viral infection models suggests that CD8+ T cell subsets characterized by distinct expression levels of the receptor PD-1 diverge in their state of exhaustion and potential for reinvigoration by PD-1 blockade. However, it remains unknown whether T cells in human cancer adopt a similar spectrum of exhausted states based on PD-1 expression levels. We compared transcriptional, metabolic and functional signatures of intratumoral CD8+ T lymphocyte populations with high (PD-1T ), intermediate (PD-1N ) and no PD-1 expression (PD-1- ) from non-small-cell lung cancer patients...
June 11, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29880013/role-of-cxcl13-and-ccl20-in-the-recruitment-of-b-cells-to-inflammatory-foci-in-chronic-arthritis
#5
Estefanía Armas-González, María Jesús Domínguez-Luis, Ana Díaz-Martín, Mayte Arce-Franco, Javier Castro-Hernández, Gabriela Danelon, Vanesa Hernández-Hernández, Sagrario Bustabad-Reyes, Alberto Cantabrana, Mariagrazia Uguccioni, Federico Díaz-González
BACKGROUND: B cells exert their pathogenic action in rheumatoid arthritis (RA) locally in the synovium. This study was undertaken to elucidate the chemokines responsible for the recruitment of B cells in the inflamed synovium, taking into account that the rich chemokine milieu present in the synovial tissue can fine-tune modulate discrete chemokine receptors. METHODS: Expression levels of chemokine receptors from the CC and CXC family, as well as CD27, were assessed by flow cytometry in CD20+ mononuclear cells isolated from the peripheral blood (PB) and synovial fluid (SF) of RA and psoriatic arthritis patients...
June 7, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29872430/high-speed-single-molecule-tracking-of-cxcl13-in-the-b-follicle
#6
Helen Miller, Jason Cosgrove, Adam J M Wollman, Emily Taylor, Zhaokun Zhou, Peter J O'Toole, Mark C Coles, Mark C Leake
Soluble factors are an essential means of communication between cells and their environment. However, many molecules readily interact with extracellular matrix components, giving rise to multiple modes of diffusion. The molecular quantification of diffusion in situ is thus a challenging imaging frontier, requiring very high spatial and temporal resolution. Overcoming this methodological barrier is key to understanding the precise spatial patterning of the extracellular factors that regulate immune function...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29844827/signaling-via-the-cxcr5-erk-pathway-is-mediated-by-cxcl13-in-mice-with-breast-cancer
#7
Licheng Xu, Zhi Liang, Shuyan Li, Jianjun Ma
Breast cancer is the most common cause of cancer-associated mortality and the most frequently diagnosed type of cancer in women worldwide. It has been revealed that the chemokine C-X-C motif chemokine ligand 13 (CXCL13) serves a pivotal role in breast cancer growth and is associated with lymph node metastasis. However, to the best of our knowledge, the mechanism by which CXCL13 mediates breast cancer growth remains uncharacterized. Female BALB/c mice were used in this study. Tumor volume was calculated and changes of gross tumor morphology were observed by hematoxylin and eosin staining...
June 2018: Oncology Letters
https://www.readbyqxmd.com/read/29808930/diagnostic-markers-for-cns-lymphoma-in-blood-and-cerebrospinal-fluid-a-systematic-review
#8
Anouk van Westrhenen, Lisanne C A Smidt, Tatjana Seute, Stefan Nierkens, Abraham C J Stork, Monique C Minnema, Tom J Snijders
Diagnosing central nervous system (CNS) lymphoma remains a challenge. Most patients have to undergo brain biopsy to obtain tissue for diagnosis, with associated risks of serious complications. Diagnostic markers in blood or cerebrospinal fluid (CSF) could facilitate early diagnosis with low complication rates. We performed a systematic literature search for studies on markers in blood or cerebrospinal fluid for the diagnosis CNS lymphoma and assessed the methodological quality of studies with the Quality Assessment of Diagnostic Accuracy Studies tool (QUADAS-2)...
May 29, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29777158/mesenchymal-stem-cells-and-t-cells-in-the-formation-of-tertiary-lymphoid-structures-in-lupus-nephritis
#9
S Esmaeil Dorraji, Aud-Malin K Hovd, Premasany Kanapathippillai, Gunnstein Bakland, Gro Østli Eilertsen, Stine L Figenschau, Kristin A Fenton
Tertiary lymphoid structures (TLS) develop in the kidneys of lupus-prone mice and systemic lupus erythematosus (SLE) patients with lupus nephritis (LN). Here we investigated the presence of mesenchymal stem cells (MSCs) in the development of TLS in murine LN, as well as the role of human MSCs as lymphoid tissue organizer (LTo) cells on the activation of CD4+ T cells from three groups of donors including Healthy, SLE and LN patients. Mesenchymal stem like cells were detected within the pelvic wall and TLS in kidneys of lupus-prone mice...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29745990/an-il-10-dominant-polarization-of-monocytes-is-a-feature-of-indian-visceral-leishmaniasis
#10
Susmita Roy, Debanjan Mukhopadhyay, Shibabrata Mukherjee, Srija Moulik, Soumyadip Chatterji, Nayan Brahme, Netai Pramanik, Rama P Goswami, Bibhuti Saha, Mitali Chatterjee
BACKGROUND: Leishmania donovani, the causative parasite of Visceral Leishmaniasis (VL) deviously manipulates host monocytes/macrophages to ensure its survival. Although monocytes/macrophages from patients with VL have demonstrated an impaired oxidative burst and antigen presentation, an unanswered yet pertinent question remains as to whether they are deactivated or alternatively activated. METHODS AND RESULTS: The significantly raised plasma levels of IL-4/IL-13 and IL-10 in VL patients suggested a microenvironment conducive for alternative activation of monocytes/macrophages...
May 10, 2018: Parasite Immunology
https://www.readbyqxmd.com/read/29728857/cxcl13-is-an-activity-marker-for-systemic-but-not-cutaneous-lupus-erythematosus-a-longitudinal-cohort-study
#11
Anna Niederkorn, Julia Frühauf, Gerold Schwantzer, Nora Wutte, Clemens Painsi, Stefan Werner, Martin Stradner, Andrea Berghold, Josef Hermann, Elisabeth Aberer
Serum levels of the IFN-regulated cytokine CXCL13 have been found to correlate with SLEDAI and renal involvement in systemic lupus erythematosus. This study investigates whether CXCL13 can also be a marker of disease activity in patients with subacute cutaneous or chronic cutaneous lupus erythematosus (SCLE, CCLE). We analysed CXCL13 levels in 60 patients' sera (18 SLE, 19 SCLE, 23 CCLE) at five time points within 1 year and correlated these levels with disease activity scores and laboratory markers. Clinical scores with no/mild, moderate or high/severe disease activity were categorized by SLEDAI in SLE, by CLASI in SCLE/CCLE...
May 4, 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29728641/the-increased-protection-and-pathology-in-mycobacterium-tuberculosis-infected-il-27r-alpha-deficient-mice-is-supported-by-il-17a-and-is-associated-with-the-il-17a-induced-expansion-of-multifunctional-t-cells
#12
Hanna Erdmann, Jochen Behrends, Kristina Ritter, Alexandra Hölscher, Johanna Volz, Ida Rosenkrands, Christoph Hölscher
During Mycobacterium tuberculosis (Mtb) infection, mice lacking the IL-27R exhibit lower bacterial burdens but develop an immunopathological sequelae in comparison to wild-type mice. We here show that this phenotype correlates with an enhanced recruitment of antigen-specific CCR6+ CD4+ T cells and an increased frequency of IL-17A-producing CD4+ T cells. By comparing the outcome of Mtb infection in C57BL/6, IL-27R-deficient and IL-27R/IL-17A-double deficient mice, we observed that both the increased protection and elevated immunopathology are supported by IL-17A...
May 4, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29725010/a-retinoic-acid-dependent-stroma-leukemia-crosstalk-promotes-chronic-lymphocytic-leukemia-progression
#13
Diego Farinello, Monika Wozińska, Elisa Lenti, Luca Genovese, Silvia Bianchessi, Edoardo Migliori, Nicolò Sacchetti, Alessia di Lillo, Maria Teresa Sabrina Bertilaccio, Claudia de Lalla, Roberta Valsecchi, Sabrina Bascones Gleave, David Lligé, Cristina Scielzo, Laura Mauri, Maria Grazia Ciampa, Lydia Scarfò, Rosa Bernardi, Dejan Lazarevic, Blanca Gonzalez-Farre, Lucia Bongiovanni, Elias Campo, Andrea Cerutti, Maurilio Ponzoni, Linda Pattini, Federico Caligaris-Cappio, Paolo Ghia, Andrea Brendolan
In chronic lymphocytic leukemia (CLL), the non-hematopoietic stromal microenvironment plays a critical role in promoting tumor cell recruitment, activation, survival, and expansion. However, the nature of the stromal cells and molecular pathways involved remain largely unknown. Here, we demonstrate that leukemic B lymphocytes induce the activation of retinoid acid synthesis and signaling in the microenvironment. Inhibition of RA-signaling in stromal cells causes deregulation of genes associated with adhesion, tissue organization and chemokine secretion including the B-cell chemokine CXCL13...
May 3, 2018: Nature Communications
https://www.readbyqxmd.com/read/29715366/differential-cxc-and-cx3c-chemokine-expression-profiles-in-aqueous-humor-of-patients-with-specific-endogenous-uveitic-entities
#14
Ahmed M Abu El-Asrar, Nele Berghmans, Saleh A Al-Obeidan, Priscilla W Gikandi, Ghislain Opdenakker, Jo Van Damme, Sofie Struyf
Purpose: To determine the levels of the neutrophil chemoattractants CXCL1, CXCL2, CXCL5, CXCL6, and CXCL8, the T helper 1 chemoattractants CXCL9, CXCL10 and CXCL11, the lymphoid chemokines CXCL12 and CXCL13 and the soluble form of the transmembrane chemokines CXCL16 and CX3CL1, in aqueous humor samples from patients with specific uveitic entities. Methods: Aqueous humor samples from patients with active uveitis associated with Behçet's disease (n = 13), sarcoidosis (n = 8), HLA-B27-related inflammation (n = 12), Vogt-Koyanagi-Harada (VKH) disease (n = 12), and healthy controls (n = 9) were assayed with the use of a multiplex assay...
May 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29705691/cxcl13-concentrations-in-cerebrospinal-fluid-of-patients-with-lyme-neuroborreliosis-and-other-neurological-disorders-determined-by-luminex-and-elisa
#15
Mateusz Markowicz, Anna-Margarita Schötta, Michael Kundi, Petra Bogovič, Katarina Ogrinc, Franc Strle, Gerold Stanek
The aims of the study were to determine and compare the concentration of CXCL13 in cerebrospinal fluid (CSF) of patients with Lyme neuroborreliosis (LNB) and various other neurological disorders applying a Luminex based assay and ELISA, and to find factors associated with CXCL13 concentration. CSF samples obtained from four clinically well-defined groups of patients (proven LNB, suspected LNB, tick-borne encephalitis (TBE), and aseptic meningitis/meningoencephalitis other than TBE) - 25 samples per group - were analyzed...
April 20, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29687026/csf-serum-matrix-metallopeptidase-9-ratio-discriminates-neuro-beh%C3%A3-et-from-multiple-sclerosis
#16
Alessandra Aldinucci, Elena Bonechi, Tiziana Biagioli, Anna M Repice, Mario M D'Elios, Lorenzo Emmi, Giacomo Emmi, Elena Silvestri, Alessandro Barilaro, Clara Ballerini
In neuro Behçet disease with multiple sclerosis-like features, diagnosis could be challenging. Here, we studied the cerebrospinal fluid and serum inflammatory profile of 11 neuro Behçet and 21 relapsing-remitting multiple sclerosis patients. Between the soluble factors analyzed (MMP9, TNF α , IL6, CXCL13, CXCL10, CXCL8, IFN γ , IL10, IL17, IL23, and others) we found MMP9 increased in neuro Behçet serum compared to multiple sclerosis and decreased in cerebrospinal fluid. Furthermore, neuro Behçet analysis of circulating natural killer CD56DIM subset suggests their potential involvement in increased MMP9 production...
April 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29675946/plasma-proteomics-identifies-a-chemokine-storm-in-idiopathic-multicentric-castleman-disease
#17
Sheila K Pierson, Aaron J Stonestrom, Dustin Shilling, Jason Ruth, Christopher S Nabel, Amrit Singh, Yue Ren, Katie Stone, Hongzhe Li, Frits van Rhee, David C Fajgenbaum
Human Herpesvirus-8 (HHV-8)-negative/idiopathic multicentric Castleman disease (iMCD) is a poorly understood disease involving polyclonal lymphoproliferation with dysmorphic germinal centers, constitutional symptoms, and multi-organ failure. Patients can experience thrombocytopenia, anasarca, reticulin fibrosis, renal dysfunction, organomegaly, and normal immunoglobulin levels, - iMCD-TAFRO. Others experience thrombocytosis, milder effusions, and hypergammaglobulinemia, -iMCD-Not Otherwise Specified (iMCD-NOS)...
April 20, 2018: American Journal of Hematology
https://www.readbyqxmd.com/read/29674128/diagnostic-value-of-cerebrospinal-fluid-cxcl13-for-acute-lyme-neuroborreliosis-a-systematic-review-and-meta-analysis
#18
REVIEW
T A Rupprecht, K M Manz, V Fingerle, C Lechner, M Klein, M Pfirrmann, U Koedel
OBJECTIVES: The utility of cerebrospinal fluid (CSF) CXCL13 for diagnosis of acute Lyme neuroborreliosis (LNB) has been debated and the test is not yet routinely performed. This study's aim was to evaluate its overall diagnostic accuracy through meta-analysis. METHODS: Electronic searches in PubMed MEDLINE and Web of Science were performed to identify relevant articles published before January 2018. A summary receiver operating characteristic curve and an optimal cut-off were estimated modelling multiple cut-offs...
April 16, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29665320/reduced-lymphotoxin-beta-production-by-tumour-cells-is-associated-with-loss-of-follicular-dendritic-cell-phenotype-and-diffuse-growth-in-follicular-lymphoma
#19
Giuseppina Pepe, Arianna Di Napoli, Claudia Cippitelli, Stefania Scarpino, Emanuela Pilozzi, Luigi Ruco
Cytokine production is essential for follicular dendritic cell (FDC) maintenance and organization of germinal centres. In follicular lymphoma, FDCs are often disarrayed and may lack antigens indicative of terminal differentiation. We investigated the in situ distribution of cells producing lymphotoxin-beta (LTB), lymphotoxin-alpha (LTA), and tumour necrosis factor-alpha (TNFA) transcripts in human reactive lymph nodes and in follicular lymphomas with follicular or diffuse growth pattern. LTB was the cytokine most abundantly produced in germinal centres...
April 2018: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/29662631/overlap-at-the-molecular-and-immunohistochemical-levels-between-angioimmunoblastic-t-cell-lymphoma-and-a-subgroup-of-peripheral-t-cell-lymphomas-without-specific-morphological-features
#20
Rebeca Manso, Julia González-Rincón, Manuel Rodríguez-Justo, Giovanna Roncador, Sagrario Gómez, Margarita Sánchez-Beato, Miguel A Piris, Socorro M Rodríguez-Pinilla
The overlap of morphology and immunophenotype between angioimmunoblastic T-cell lymphoma (AITL) and other nodal peripheral T-cell lymphomas (n-PTCLs) is a matter of current interest whose clinical relevance and pathogenic background have not been fully established. We studied a series of 98 n-PTCL samples (comprising 57 AITL and 41 PTCL-NOS) with five TFH antibodies (CD10, BCL-6, PD-1, CXCL13, ICOS), looked for mutations in five of the genes most frequently mutated in AITL ( TET2 , DNMT3A, IDH2, RHOA and PLCG1 ) using the Next-Generation-Sequencing Ion Torrent platform, and measured the correlations of these characteristics with morphology and clinical features...
March 23, 2018: Oncotarget
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