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https://www.readbyqxmd.com/read/28056114/diagnosis-and-management-of-waldenstr%C3%A3-m-macroglobulinemia-mayo-stratification-of-macroglobulinemia-and-risk-adapted-therapy-msmart-guidelines-2016
#1
Prashant Kapoor, Stephen M Ansell, Rafael Fonseca, Asher Chanan-Khan, Robert A Kyle, Shaji K Kumar, Joseph R Mikhael, Thomas E Witzig, Michelle Mauermann, Angela Dispenzieri, Sikander Ailawadhi, A Keith Stewart, Martha Q Lacy, Carrie A Thompson, Francis K Buadi, David Dingli, William G Morice, Ronald S Go, Dragan Jevremovic, Taimur Sher, Rebecca L King, Esteban Braggio, Ann Novak, Vivek Roy, Rhett P Ketterling, Patricia T Greipp, Martha Grogan, Ivana N Micallef, P Leif Bergsagel, Joseph P Colgan, Nelson Leung, Wilson I Gonsalves, Yi Lin, David J Inwards, Suzanne R Hayman, Grzegorz S Nowakowski, Patrick B Johnston, Steven J Russell, Svetomir N Markovic, Steven R Zeldenrust, Yi L Hwa, John A Lust, Luis F Porrata, Thomas M Habermann, S Vincent Rajkumar, Morie A Gertz, Craig B Reeder
Importance: Waldenström macroglobulinemia (WM), an IgM-associated lymphoplasmacytic lymphoma, has witnessed several practice-altering advances in recent years. With availability of a wider array of therapies, the management strategies have become increasingly complex. Our multidisciplinary team appraised studies published or presented up to December 2015 to provide consensus recommendations for a risk-adapted approach to WM, using a grading system. Observations: Waldenström macroglobulinemia remains a rare, incurable cancer, with a heterogeneous disease course...
January 5, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28030343/anti-anisakis-sp-antibodies-in-serum-of-healthy-subjects-relationship-with-%C3%AE-%C3%AE-and-%C3%AE-%C3%AE-t-cells
#2
Vega Zamora, Carlos García-Ballesteros, Carmen Benet-Campos, Ferrán Ballester, Carmen Cuéllar, Juan C Andreu-Ballester
Anisakiosis is nowadays one of the nematodoses more prevalent in Spain, with rates that oscillate between 0.43% in Galicia (N.W. Spain), and 15.7% and 22.1% in inland and southern regions, respectively. Likewise, it has been proved that Anisakis larvae have developed mechanisms to modulate the dichotomy of the host immune response for their own benefit. The experimental hypothesis of the present study was that Anisakis sp. larval products can be mediators of immune suppression and induce changes on the populations of αβ+ and γδ+ T cells...
March 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28024494/-pet-ct-manifestation-and-clinical-analysis-of-waldenstrom-macroglobulinemia
#3
Chong-Yang Ding, Hong-Yu Liu, Zhe Guo, Tian-Nu Li
OBJECTIVE: To investigate the PET-CT manifestation and clinical features of patients with Waldenstrom macroglobulinemia(WM) . METHODS: The clinical features, laboratorial examination results and PET-CT manifestation of 12 patients with WM were analyzed retrospectively. RESULTS: The average age of 12 patients with WM was 63.5 years old, the most common incipient symptoms were fatigue and hyperviscosity syndrome. The median SUVmax of bone marrow was 4...
December 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28007038/semi-quantitative-method-for-staphylococci-magnetic-detection-in-raw-milk
#4
Carla Margarida Duarte, Carla Carneiro, Susana Cardoso, Paulo Peixeiro Freitas, Ricardo Bexiga
Bovine mastitis is the most costly disease for dairy farmers, hence, control measures to prevent it are crucial for dairy farm sustainability. Staphylococcus aureus is considered a major mastitis pathogen because of its impact on milk quality and low cure rates. Prevention of S. aureus mastitis includes segregation of infected animals, whilst treatment of such animals should be performed for a longer time to improve cure rates. This makes identification of S. aureus infected quarters and animals of significant importance...
December 23, 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/27995742/tracking-the-amphibian-pathogens-batrachochytrium-dendrobatidis-and-batrachochytrium-salamandrivorans-using-a-highly-specific-monoclonal-antibody-and-lateral-flow-technology
#5
Michael J Dillon, Andrew E Bowkett, Michael J Bungard, Katie M Beckman, Michelle F O'Brien, Kieran Bates, Matthew C Fisher, Jamie R Stevens, Christopher R Thornton
The fungus Batrachochytrium dendrobatidis (Bd) causes chytridiomycosis, a lethal epizootic disease of amphibians. Rapid identification of the pathogen and biosecurity is essential to prevent its spread, but current laboratory-based tests are time-consuming and require specialist equipment. Here, we describe the generation of an IgM monoclonal antibody (mAb), 5C4, specific to Bd as well as the related salamander and newt pathogen Batrachochytrium salamandrivorans (Bsal). The mAb, which binds to a glycoprotein antigen present on the surface of zoospores, sporangia and zoosporangia, was used to develop a lateral-flow assay (LFA) for rapid (15 min) detection of the pathogens...
December 19, 2016: Microbial Biotechnology
https://www.readbyqxmd.com/read/27974705/are-neurological-complications-of-monoclonal-gammopathy-of-undetermined-significance-underestimated
#6
Normann Steiner, Angelika Schwärzler, Georg Göbel, Wolfgang Löscher, Julia Wanschitz, Eberhard Gunsilius
OBJECTIVES: Monoclonal gammopathy of undetermined significance (MGUS) is a premalignancy preceding multiple myeloma (MM) or related disorders. Neurological symptoms caused by the monoclonal immunoglobulins or free light-chains are often associated with a high morbidity. We analyzed the prevalence of neuropathy, clinical features and the long-term outcome in 223 patients (pts.) with MGUS. PATIENTS AND METHODS: Between 1/2005 and 3/2015, 223 adult pts. with MGUS were identified in our database...
December 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27907066/b-cell-based-seamless-engineering-of-antibody-fc-domains
#7
Koji Hashimoto, Kohei Kurosawa, Akiho Murayama, Hidetaka Seo, Kunihiro Ohta
Engineering of monoclonal antibodies (mAbs) enables us to obtain mAbs with additional functions. In particular, modifications in antibody's Fc (fragment, crystallizable) region can provide multiple benefits such as added toxicity by drug conjugation, higher affinity to Fc receptors on immunocytes, or the addition of functional modules. However, the generation of recombinant antibodies requires multiple laborious bioengineering steps. We previously developed a technology that enables rapid in vitro screening and isolation of specific mAb-expressing cells from the libraries constructed with chicken B-cell line DT40 (referred to as the 'ADLib system')...
2016: PloS One
https://www.readbyqxmd.com/read/27880797/regulation-and-maintenance-of-an-adoptive-t-cell-dependent-memory-b-cell-pool
#8
Marie Anson, Inês Amado, Marie-Pierre Mailhé, Emmanuel Donnadieu, Sylvie Garcia, François Huetz, Antonio A Freitas
We investigated the ability of monoclonal B cells to restore primary and secondary T-cell dependent antibody responses in adoptive immune-deficient hosts. Priming induced B cell activation and expansion, AID expression, antibody production and the generation of IgM+IgG- and IgM-IgG+ antigen-experienced B-cell subsets that persisted in the lymphopenic environment by cell division. Upon secondary transfer and recall the IgM-IgG+ cells responded by the production of antigen-specific IgG while the IgM+ memory cells secreted mainly IgM and little IgG, but generated new B cells expressing germinal center markers...
2016: PloS One
https://www.readbyqxmd.com/read/27866728/what-is-new-in-2015-in-dysimmune-neuropathies
#9
REVIEW
T Kuntzer
This review discusses and summarizes the concept of nodopathies, the diagnostic features, investigations, pathophysiology, and treatment options of chronic inflammatory demyelinating polyradiculoneuropathy, and gives updates on other inflammatory and dysimmune neuropathies such as Guillain-Barré syndrome, sensory neuronopathies, small-fiber-predominant ganglionitis, POEMS syndrome, neuropathies associated with IgM monoclonal gammopathy and multifocal motor neuropathy. This field of research has contributed to the antigenic characterization of the peripheral motor and sensory functional systems, as well as helping to define immune neuropathic syndromes with widely different clinical presentation, prognosis and response to therapy...
December 2016: Revue Neurologique
https://www.readbyqxmd.com/read/27864913/human-secretory-igm-antibodies-activate-human-complement-and-offer-protection-at-mucosal-surface
#10
Terje E Michaelsen, Sidsel Emilsen, Randi H Sandin, Beathe Kiland Granerud, Diane Bratlie, Oistein Ihle, Inger Sandlie
IgM molecules circulate in serum as large polymers, mainly pentamers, which can be transported by the poly-Ig receptor (pIgR) across epithelial cells to mucosal surfaces and released as secretory IgM (SIgM). The mucosal SIgM molecules have non-covalently attached secretory component (SC), which is the extracellular part of pIgR which is cleaved from the epithelial cell membrane. Serum IgM antibodies do not contain SC, and have previously been shown to make a conformational change from "a star" to a "staple" conformation upon reaction with antigens on a cell surface, enabling them to activate complement...
November 16, 2016: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/27858705/epitope-analysis-of-japanese-cedar-pollen-allergen-cry-j2-with-a-human-igm-class-monoclonal-antibody-404-117
#11
Seiya Chiba, Haruka Yokoyama, Ayane Kumazawa, Michie Shimmoto, Yasunori Naganawa, Hiroshi Shinmoto
Japanese cedar pollen allergen Cry j2 is a causal allergen of seasonal pollinosis in Japan. To analyze B cell epitopes of Cry j2, we established two human-mouse hybridomas secreting IgM class human monoclonal antibodies to Cry j2. A pin-peptide enzyme-linked immunosorbent assay with synthesized icosa peptides showed that 404-117 monoclonal antibody bound to peptides #11-13 with cry j2 amino acid sequence of 101F-L140. Detailed analysis with octa peptides and alanine substituted peptides indicated that an amino acid sequence of 118FKVD121 was an essential for antibody binding...
November 4, 2016: Human Antibodies
https://www.readbyqxmd.com/read/27825470/monoclonal-igm-related-al-amyloidosis
#12
REVIEW
Paolo Milani, Giampaolo Merlini
Monoclonal immunoglobulin M (IgM)-related light chain (AL) amyloidosis, which accounts for 5%-7% of all AL amyloidosis cases, is a distinct clinical entity that poses specific challenges to clinicians. Several studies reported that although there is a substantial overlap, the pattern of organ involvement is peculiar, with higher frequencies of lung, lymph nodes, and peripheral nervous system involvement. A recent collaborative study from three European referral centers, defined that cardiac involvement, advanced Mayo disease stage, neuropathic, and liver involvement were independent factors that had impact on survival in IgM-AL amyloidosis patients...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27825466/current-therapy-guidelines-for-waldenstrom-s-macroglobulinaemia
#13
REVIEW
Efstathios Kastritis, Meletios A Dimopoulos
Waldenstrom's macroglobulinaemia (WM) is a B-cell neoplasm in which bone marrow is infiltrated by lymphoplasmacytic cells that secrete monoclonal immunoglobulin M (IgM). More than a decade ago, specific criteria were agreed to define diagnosis and symptomatic disease requiring therapy; however, treatment recommendations change as new options emerge. Treatment decisions consider specific disease characteristics (burden of disease, IgM levels, presence of cytopenias) and patient characteristics (age, comorbidities, toxicity)...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27825465/monoclonal-gammopathy-of-undetermined-significance-and-waldenstr%C3%A3-m-s-macroglobulinemia
#14
REVIEW
Sham Mailankody, Ola Landgren
Since the initial identification of patients with monoclonal elevation of gamma globulin and associated clinical symptoms in 1944 by Jan Waldenström, several new insights have been gained using a range of approaches. For example, IgM monoclonal gammopathy of undetermined significance and smoldering Waldenström's macroglobulinemia are defined clinical precursor states to symptomatic Waldenström's macroglobulinemia. Epidemiologic studies have established the prevalence of these conditions and the estimated risk of progression to symptomatic disease...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27825464/prognostic-factors-and-indications-for-treatment-of-waldenstr%C3%A3-m-s-macroglobulinemia
#15
REVIEW
Robert A Kyle, Stephen M Ansell, Prashant Kapoor
Waldenström's Macroglobulinemia (WM) is characterized by the presence of an IgM monoclonal protein regardless of its size, 10% or more bone marrow infiltration by small lymphocytes with a plasmacytoid or plasma cell differentiation. These cells usually have the following markers: IgM+, CD5(-), CD10(-), CD19(+), CD20(+) and CD23(-). Chronic lymphocytic leukemia as well as other lymphoproliferative disorders such as mantle cell, marginal zone and mucosa-associated lymphoid tissue (MALT) lymphoma must be excluded...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27825460/bone-marrow-microenvironment-in-waldenstrom-s-macroglobulinemia
#16
REVIEW
Shahrzad Jalali, Stephen M Ansell
Waldenstrom Macroglobulinemia (WM) is a low-grade B-cell lymphoma defined firstly by infiltration of lymphoplasmacytic cells into the bone marrow (BM), the milieu where the cells acquire signals that promote malignant growth and proliferation. A second characteristic associated with WM is the increased synthesis of monoclonal immunoglobulin M (IgM) by lymphoplasmacytic cells, which is secreted in the serum and often results in hyperviscosity. Advanced genomic tools have improved our understanding of the genetic events that contribute to malignant transformation in WM, but the role of BM microenvironment is also emerging as having an essential role in WM disease progression...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27825459/origin-of-waldenstrom-s-macroglobulinaemia
#17
REVIEW
Ramón García-Sanz, Cristina Jiménez, Noemí Puig, Bruno Paiva, Norma C Gutiérrez, Paula Rodríguez-Otero, Julia Almeida, Jesús San Miguel, Alberto Orfão, Marcos González, Martín Pérez-Andrés
Waldenstrom's macroglobulinaemia (WM) is an MYD88(L265P)-mutated lymphoplasmacytic lymphoma that invades bone marrow and secretes monoclonal immunoglobulin M (IgM). WM cells are usually unable to undergo class switch recombination, and have mutated IGHV, with a typical immunophenotype CD19(+)/CD22(low+)/CD23(-)/CD25(+)/CD27(+)/CD45(+)/CD38(low+)/SmIgM(+) (negative for CD5, CD10, CD11c, CD103). This immunophenotype matches memory B cells (smIgM(-/+)/CD10(-)/CD19(+)/CD20(+)/CD27(+)/CD38(low+)/CD45(+)), representing 30% of B cells in the blood...
June 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27822644/immobilization-and-detection-of-platelet-derived-extracellular-vesicles-on-functionalized-silicon-substrate-cytometric-and-spectrometric-approach
#18
Katarzyna Gajos, Agnieszka Kamińska, Kamil Awsiuk, Adrianna Bajor, Krzysztof Gruszczyński, Anna Pawlak, Andrzej Żądło, Artur Kowalik, Andrzej Budkowski, Ewa Stępień
Among the various biomarkers that are used to diagnose or monitor disease, extracellular vesicles (EVs) represent one of the most promising targets in the development of new therapeutic strategies and the application of new diagnostic methods. The detection of circulating platelet-derived microvesicles (PMVs) is a considerable challenge for laboratory diagnostics, especially in the preliminary phase of a disease. In this study, we present a multistep approach to immobilizing and detecting PMVs in biological samples (microvesicles generated from activated platelets and human platelet-poor plasma) on functionalized silicon substrate...
November 7, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27818812/cns-vasculitis-associated-with-waldenstr%C3%A3-m-macroglobulinemia
#19
Tanawan Riangwiwat, Chris Y Wu, Alberto S Santos-Ocampo, Randal J Liu, Aaron M McMurtray, Beau K Nakamoto
Waldenström macroglobulinemia (WM) is an indolent B cell lymphoproliferative disorder with monoclonal IgM secretion. We present a patient with WM who presented with multifocal acute cortical ischemic strokes and was found to have central nervous system (CNS) vasculitis. Workup was negative for cryoglobulins and hyperviscosity syndrome. Immunosuppression with intravenous steroids and cyclophosphamide stabilized the patient's mental status and neurologic deficits. On followup over 7 years, patient gained independence from walking aids and experienced no recurrences of CNS vasculitis...
2016: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/27804292/analysis-of-pre-existing-igg-and-igm-antibodies-against-polyethylene-glycol-peg-in-the-general-population
#20
Qi Yang, Timothy M Jacobs, Justin D McCallen, Dominic T Moore, Justin T Huckaby, Jasmine N Edelstein, Samuel K Lai
Circulating antibodies (Ab) that specifically bind polyethylene glycol (PEG), a biocompatible polymer routinely used in protein and nanoparticle therapeutics, have been associated with reduced efficacy of and/or adverse reactions to therapeutics modified with or containing PEG. Unlike most antidrug antibodies that are induced following initial drug dosing, anti-PEG Ab can be found in treatment-naïve individuals (i.e., individuals who have never undergone treatment with PEGylated drugs but most likely have been exposed to PEG through other means)...
December 6, 2016: Analytical Chemistry
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