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https://www.readbyqxmd.com/read/28231569/biomarkers-in-autoimmune-salivary-gland-disorders-a-review
#1
Benedikt Hofauer, Klaus Thuermel, Constanze Gahleitner, Andreas Knopf
Salivary glands are frequent sites of manifestations of autoimmune disorders in the head and neck. Sjögren syndrome, sarcoidosis, granulomatosis with polyangiitis, and IgG4-related sialadenitis represent the most important autoimmune salivary gland disorders. Due to the lack of specific symptoms, diagnosis of these conditions remains a challenge. Diagnosis is usually based on classification criteria involving clinical tests, histopathological evaluation, and serological examinations. Depending on the disease, biomarkers are of different value and have to be interpreted carefully...
February 24, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28228433/case-of-primary-bilateral-diffuse-large-b-cell-lymphoma-of-the-ovary-with-plasmablastic-features-in-an-hiv-negative-female-patient
#2
Suvarna L Guvvala, Sailaja Sakam, Masooma Niazi, Yevgeniy Skaradinskiy
A 37-year-old woman from Puerto Rico presented to our clinic with symptoms of an abdominal distension progressively worsening over 1 year. A CT of an abdomen and pelvis with contrast was performed and revealed bilateral large heterogeneous pelvic adnexal masses with large ascites and right pleural effusion. Tumour markers CA 125 was 766 U/mL and lactate dehydrogenase was 654 U/L. She underwent total abdominal hysterectomy, bilateral salpingo-oophorectomy with pelvic lymph node dissection and partial omentectomy...
February 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28226184/cd117-kit-is-a-useful-marker-in-the-diagnosis-of-plasmablastic-plasma-cell-myeloma
#3
Etan Marks, Yang Shi, Yanhua Wang
AIMS: Plasmablastic plasma cell myeloma (PPCM) is a rare morphological presentation of multiple myeloma and can resemble plasmablastic lymphoma (PBL), an HIV related lymphoid neoplasm, morphologically and immunophenotypically. We retrospectively searched for factors that could help differentiate these two entities. METHODS: We used Clinical Looking Glass (CLG), a data mining tool, to identify patients with a diagnosis of either PPCM or PBL with a CD117 test performed...
February 22, 2017: Histopathology
https://www.readbyqxmd.com/read/28223983/b-cell-homeostasis-and-functional-properties-are-altered-in-an-hypochlorous-acid-induced-murine-model-of-systemic-sclerosis
#4
Sébastien Sanges, Manel Jendoubi, Niloufar Kavian, Carine Hauspie, Silvia Speca, Jean-Charles Crave, Thomas Guerrier, Guillaume Lefèvre, Vincent Sobanski, Ariel Savina, Eric Hachulla, Pierre-Yves Hatron, Myriam Labalette, Frédéric Batteux, Sylvain Dubucquoi, David Launay
INTRODUCTION: During systemic sclerosis (SSc), peripheral B cells display alterations in subset homeostasis and functional properties and are a promising therapeutic target. However, there is only few data regarding whether these anomalies are accurately reproduced in animal models of SSc. OBJECTIVE: In this work, we assessed the B cell homeostasis modifications in an experimental model of SSc [hypochlorous acid (HOCl)-induced mouse], both at a phenotypic and functional level, during the course of the disease...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28219887/disruption-of-pathogenic-cellular-networks-by-il-21-blockade-leads-to-disease-amelioration-in-murine-lupus
#5
Jin-Young Choi, Abhinav Seth, Michael Kashgarian, Sonia Terrillon, Emma Fung, Lili Huang, Li Chun Wang, Joe Craft
Systemic lupus erythematosus (lupus) is characterized by autoantibody-mediated organ injury. Follicular Th (Tfh) cells orchestrate physiological germinal center (GC) B cell responses, whereas in lupus they promote aberrant GC responses with autoreactive memory B cell development and plasma cell-derived autoantibody production. IL-21, a Tfh cell-derived cytokine, provides instructional cues for GC B cell maturation, with disruption of IL-21 signaling representing a potential therapeutic strategy for autoantibody-driven diseases such as systemic lupus erythematosus...
February 20, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28207555/human-immunodeficiency-virus-negative-plasmablastic-lymphoma-a-case-report-and-literature-review
#6
Li Lin, Xudong Zhang, Meng Dong, Ling Li, Xinhua Wang, Lei Zhang, Xiaorui Fu, Zhenchang Sun, Jingjing Wu, Zhaoming Li, Yu Chang, Yingjun Wang, Zhiyuan Zhou, Mingzhi Zhang, Qingjiang Chen
RATIONALE: Plasmablastic lymphoma (PBL) is a rare subtype of human immunodeficiency virus (HIV)-related non-Hodgkin's lymphoma that predominantly manifests in the oral cavity. PATIENT CONCERNS: Three cases of HIV-negative PBL were reported. DIAGNOSES: HIV-negative PBL INTERVENTIONS:: The patient had undergone chemotherapy. OUTCOMES: Clinical outcomes were very poor in Cases 1 and 3; Case 2, whose diagnosis suggested no bone marrow involvement, is still alive...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207301/mucosal-chemokines
#7
Marcela Hernández-Ruiz, Albert Zlotnik
Several chemokines have important functions in mucosal immunity. While there are many chemokines, 4 of them (CCL25, CCL28, CXCL14, and CXCL17) are especially important in mucosal immunity because they are homeostatically expressed in mucosal tissues. Of these, only CCL25 and CCL28 have been widely recognized as mucosal chemokines. In this study, we review the physiology of these chemokines with specific emphasis on their function in mucosal immunity. CCL25 recruits certain important subsets of T cells that express CCR9 to the small intestine...
February 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28191314/diagnosis-and-treatment-of-cd20-negative-b-cell-lymphomas
#8
REVIEW
Tasleem Katchi, Delong Liu
CD20 negative B cell non-Hodgkin lymphoma (NHL) is rare and accounts for approximately 1-2% of B cell lymphomas. CD20- negative NHL is frequently associated with extranodal involvement, atypical morphology, aggressive clinical behaviour, resistance to standard chemotherapy and poor prognosis. The most common types of these include plasmablastic lymphoma, primary effusion lymphoma, large B-cell lymphoma arising from HHV8-associated multicentric Castleman's disease, and ALK+ large B cell lymphoma. This review provides an overview of the diagnostic and treatment modalities for CD20 negative B cell NHL...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28188247/neurodegeneration-enhances-the-development-of-arthritis
#9
Stefanie C Lang, Ulrike Harre, Pavitra Purohit, Katharina Dietel, Deborah Kienhöfer, Jonas Hahn, Wolfgang Baum, Martin Herrmann, Georg Schett, Dirk Mielenz
The prevalence of neurodegenerative disease and arthritis increases with age. Despite both processes being associated with immune activation and inflammation, little is known about the mechanistic interactions between neurodegenerative disease and arthritis. In this article, we show that tau-transgenic (tau-tg) mice that develop neurodegenerative disease characterized by deposition of tau tangles in the brain are highly susceptible to developing arthritis. Already at steady-state conditions, tau-tg mice exhibit peripheral immune activation that is manifested by higher numbers of granulocytes, plasmablasts, and inflammatory Ly6C(hi) CCR2(+) monocytes, as well as increased levels of proinflammatory cytokines, such as TNF-α and IL-17...
February 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28183334/circulating-plasmablasts-plasma-cells-a-potential-biomarker-for-igg4-related-disease
#10
Wei Lin, Panpan Zhang, Hua Chen, Yu Chen, Hongxian Yang, Wenjie Zheng, Xuan Zhang, Fengxiao Zhang, Wen Zhang, Peter E Lipsky
BACKGROUND: Immunoglobulin G4 (IgG4)-related disease (IgG4-RD) is a multisystem fibroinflammatory disease. We previously reported that a circulating cell population expressing CD19(+)CD24(-)CD38(hi) was increased in patients with IgG4-RD. In this study, we aimed to document that this cell population represented circulating plasmablasts/plasma cells, to identify the detailed phenotype and gene expression profile of these IgG4-secreting plasmablasts/plasma cells, and to determine whether this B-cell lineage subset could be a biomarker in IgG4-related disease (IgG4-RD)...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28166682/clonally-expanded-cytotoxic-cd4-t-cells-and-the-pathogenesis-of-igg4-related-disease
#11
Hamid Mattoo, John H Stone, Shiv Pillai
IgG4-related disease (IgG4-RD) is a systemic condition of unknown cause characterized by highly fibrotic lesions, with dense lymphoplasmacytic infiltrates containing a preponderance of IgG4-expressing plasma cells. CD4(+) T cells and B cells constitute the major inflammatory cell populations in IgG4-RD lesions. IgG4-RD patients with active, untreated disease show a marked expansion of plasmablasts in the circulation. Although the therapeutic depletion of B cells suggests a role for these cells in the disease, a direct role for B cells or IgG4 in the pathogenesis of IgG4-RD is yet to be demonstrated...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28153782/rapid-de-novo-generation-of-antigen-specific-human-b-cells-with-expression-of-blimp-1-and-aid-by-in-vitro-immunization
#12
Xu Fang, Yue Tong, Hong Tian, Hongyu Ning, Xiangdong Gao, Wenbing Yao
In vitro immunization with antigens and cytokines triggers specific human B-cell response in short periods and is therefore superior to conventional in vivo immunization for antibody development. However, this new technology is limited by low efficiency, poor reproducibility, and requirement of pre-immunized lymphocytes. In this study, we demonstrate a novel method for de novo inducing antigen-specific human B cells in vitro. Unlike previous in vitro immunization of unfractionated PBMCs, we firstly optimized the conditions for inducing monocyte-derived dendritic cells (DCs) to efficiently capture, process, and present antigens...
January 30, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28137280/high-dimensional-assessment-of-b-cell-responses-to-quadrivalent-meningococcal-conjugate-and-plain-polysaccharide-vaccine
#13
Daniel O'Connor, Elizabeth A Clutterbuck, Amber J Thompson, Matthew D Snape, Maheshi N Ramasamy, Dominic F Kelly, Andrew J Pollard
BACKGROUND: Neisseria meningitidis is a globally important cause of meningitis and septicaemia. Twelve capsular groups of meningococci are known, and quadrivalent vaccines against four of these (A, C, W and Y) are available as plain-polysaccharide and protein-polysaccharide conjugate vaccines. Here we apply contemporary methods to describe B-cell responses to meningococcal polysaccharide and conjugate vaccines. METHODS: Twenty adults were randomly assigned to receive either a meningococcal plain-polysaccharide or conjugate vaccine; one month later all received the conjugate vaccine...
January 30, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28133792/b-cell-responses-to-hiv-infection
#14
REVIEW
Susan Moir, Anthony S Fauci
The induction of neutralizing antibodies directed against the human immunodeficiency virus (HIV) has received considerable attention in recent years, in part driven by renewed interest and opportunities for antibody-based strategies for prevention such as passive transfer of antibodies and the development of preventive vaccines, as well as immune-based therapeutic interventions. Advances in the ability to screen, isolate, and characterize HIV-specific antibodies have led to the identification of a new generation of potent broadly neutralizing antibodies (bNAbs)...
January 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28106253/massive-plasmablast-response-elicited-in-the-acute-phase-of-hantavirus-pulmonary-syndrome
#15
Marina García, Ayelén Iglesias, Verónica I Landoni, Carla Bellomo, Agostina Bruno, María Teresa Córdoba, Luciana Balboa, Gabriela C Fernández, María Del Carmen Sasiain, Valeria P Martínez, Pablo Schierloh
Beside its key diagnostic value, the humoral immune response is thought to play a protective role in hantavirus pulmonary syndrome. However, little is known about the cell source of these antibodies during ongoing human infection. Herein we characterized B-cell subsets circulating in Andes-virus-infected patients. A notable potent plasmablast (PB) response that increased 100-fold over the baseline levels was observed around 1 week after the onset of symptoms. These PB present a CD3(neg) CD19(low) CD20(neg) CD38(hi) CD27(hi) CD138(+/-) IgA(+/-) surface phenotype together with the presence of cytoplasmic functional immunoglobulins...
January 20, 2017: Immunology
https://www.readbyqxmd.com/read/28104464/genetic-defects-in-pi3k%C3%AE-affect-b-cell-differentiation-and-maturation-leading-to-hypogammaglobulineamia-and-recurrent-infections
#16
Marjolein Wentink, Virgil Dalm, Arjan C Lankester, Pauline A van Schouwenburg, Liesbeth Schölvinck, Tomas Kalina, Radana Zachova, Anna Sediva, Annechien Lambeck, Ingrid Pico-Knijnenburg, Jacques J M van Dongen, Malgorzata Pac, Ewa Bernatowska, Martin van Hagen, Gertjan Driessen, Mirjam van der Burg
BACKGROUND: Mutations in PIK3CD and PIK3R1 cause activated PI3K-δ syndrome (APDS) by dysregulation of the PI3K-AKT pathway. METHODS: We studied precursor and peripheral B-cell differentiation and apoptosis via flowcytometry. Furthermore, we performed AKT-phosphorylation assays and somatic hypermutations (SHM) and class switch recombination (CSR) analysis. RESULTS: We identified 13 patients of whom 3 had new mutations in PIK3CD or PIK3R1. Patients had low total B-cell numbers with increased frequencies of transitional B cells and plasmablasts, while the precursor B-cell compartment in bone marrow was relatively normal...
January 17, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28102191/a-broadly-protective-therapeutic-antibody-against-influenza-b-virus-with-two-mechanisms-of-action
#17
Ning Chai, Lee R Swem, Summer Park, Gerald Nakamura, Nancy Chiang, Alberto Estevez, Rina Fong, Lynn Kamen, Elviza Kho, Mike Reichelt, Zhonghua Lin, Henry Chiu, Elizabeth Skippington, Zora Modrusan, Jeremy Stinson, Min Xu, Patrick Lupardus, Claudio Ciferri, Man-Wah Tan
Influenza B virus (IBV) causes annual influenza epidemics around the world. Here we use an in vivo plasmablast enrichment technique to isolate a human monoclonal antibody, 46B8 that neutralizes all IBVs tested in vitro and protects mice against lethal challenge of all IBVs tested when administered 72 h post infection. 46B8 demonstrates a superior therapeutic benefit over Tamiflu and has an additive antiviral effect in combination with Tamiflu. 46B8 binds to a conserved epitope in the vestigial esterase domain of hemagglutinin (HA) and blocks HA-mediated membrane fusion...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28095384/a-case-of-plasmablastic-lymphoma-achieving-complete-response-and-durable-remission-after-lenalidomide-based-therapy
#18
Jessica M Schmit, Jess DeLaune, Maxim Norkin, Alan Grosbach
BACKGROUND: Plasmablastic lymphoma (PBL) is an uncommon variant of diffuse large B-cell lymphoma that is characterized by its plasmacytoid features, aggressive tendencies, and frequent association with human immunodeficiency virus (HIV) infection or other immunocompromised states. Multi-agent, intensive chemotherapy regimens are recommended as first-line treatment by the National Comprehensive Cancer Network. However, the toxicity of these regimens is high and prognosis remains poor. CASE REPORT: We report a patient with HIV-negative PBL who achieved complete response and durable remission using a lenalidomide-based chemotherapy regimen as first-line therapy...
2017: Oncology Research and Treatment
https://www.readbyqxmd.com/read/28091934/roles-of-plasmablasts-and-b-cells-in-igg4-related-disease-implications-for-therapy-and-early-treatment-outcomes
#19
Marco Lanzillotta, Emanuel Della-Torre, John H Stone
High serum IgG4 concentrations are a striking feature of many patients with IgG4-related disease (IgG4-RD). Blood levels of IgG4 often reach ten, twenty, and even thirty or more times higher than the upper limit of normal. Under the proper clinical circumstances, the finding of an elevated serum IgG4 concentration serves as a useful biomarker for the diagnosis of this condition. This serum IgG4 elevation quickly called attention to the possibility of therapies targeting cells of the B lymphocyte lineage. In addition, a greater understanding of the cellular mechanisms that underpin IgG4-RD has identified peripheral blood plasmablasts as a promising biomarker for this disease...
January 7, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28088973/-clinical-characteristics-of-hiv-negative-plasmablastic-lymphoma
#20
J W Du, X Sun, G P Li, L H Dong, X Gao, Y F Li, X D Wei, Y P Song
No abstract text is available yet for this article.
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
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