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https://www.readbyqxmd.com/read/29326807/heavy-chain-diseases-and-myeloma-associated-fanconi-syndrome-an-update
#1
REVIEW
Roberto Ria, Franco Dammacco, Angelo Vacca
The heavy chain diseases (HCDs) are rare B-cell malignancies characterized by the production of a monoclonal immunoglobulin heavy chain without an associated light chain. There are three types of HCD, defined by the class of immunoglobulin heavy chain produced: IgA (α-HCD), IgG (γ-HCD), and IgM (μ-HCD). Alpha-HCD is the most common and usually occurs as intestinal malabsorption in a young adult from a country of the Mediterranean area. Gamma- and μ-HCDs are rarer and associated with a B-cell non-Hodgkin lymphoma that produces an abnormal Ig heavy chain...
2018: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/29324245/heavy-light-chain-assay-as-a-biomarker-for-diagnosis-and-follow-up-of-multiple-myeloma
#2
Hyojin Chae, Eunhee Han, Jaeeun Yoo, Jaewoong Lee, Jeong Joong Lee, Kyoungho Cha, Myungshin Kim, Yonggoo Kim, Sung-Eun Lee, Chang-Ki Min
BACKGROUND: The heavy-light chain (HLC) assay enables the accurate measurement of each isotype-specific heavy and light chain (i.e., IgGĸ, IgGλ, IgAĸ, and IgAλ) and the derivation of an HLC-pair ratio. However, to date, only limited data have validated the usefulness of serial HLC measurements in the routine follow-up of intact immunoglobulin multiple myeloma (MM) patients. METHODS: A total of 36 diagnostic and 671 post-treatment sera from 115 IgG and 61 IgA MM patients were assessed with capillary zone electrophoresis, immunosubtraction electrophoresis, total immunoglobulin measurement, free light chain, and HLC assay...
January 8, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29306413/relative-quantitation-of-neutral-and-sialylated-n-glycans-using-stable-isotopic-labeled-d0-d5-benzoyl-chloride-by-maldi-ms
#3
Chang Wang, Yike Wu, Liang Zhang, Bi-Feng Liu, Yawei Lin, Xin Liu
Quantitative analysis of glycans is an emerging field in glycomic research. Herein we present a rapid and effective dual-labeling strategy, in the combination of isotopic derivatization of N-glycosylamine-based glycans by d0/d5-benzoyl chloride and methylamidation of sialic acids, to relatively quantify both neutral and sialylated N-glycans simultaneously by MALDI-MS. The derivatization efficiencies were increased by microwave-accelerated deglycosylation which not only largely reduce the time of glycoprotein deglycosylation but also inhibit the hydrolysis of intermediate glycosylamines produced by PNGase F digestion...
March 9, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29250300/cultivation-and-immortalization-of-human-b-cells-producing-a-human-monoclonal-igm-antibody-binding-to-mda-ldl-further-evidence-for-formation-of-atherogenic-mda-ldl-adducts-in-humans-in-vivo
#4
Franz Tatzber, Edith Pursch, Ulrike Resch, Roswitha Pfragner, Sandra Holasek, Meinrad Lindschinger, Gerhard Cvirn, Willibald Wonisch
Oxidatively modified low-density lipoprotein (oLDL) is firmly believed to play an important role in the initiation and development of atherosclerosis, and malonic dialdehyde (MDA) is one of the major lipid peroxidation breakdown products involved in this process. In recent decades, antibodies against MDA-LDL have been detected in human and animal sera. In our study, human B-cells from the peripheral blood of a healthy female donor were fused with the SP2/0 mouse myeloma cell line. Antibody-producing hybridomas were detected by MDA-LDL-IgG/IgM enzyme-linked immunosorbent assays (ELISA) and Cu++-oxidized LDL IgG/IgM (oLAb) ELISA...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29244706/streptococcus-pneumoniae-osteomyelitis-in-a-25-year-old-man-as-the-initial-presentation-of-multiple-myeloma-a-case-report
#5
Tracy Webber, Michael Lawlor, Tessa Balach
CASE: We report the case of a 25-year-old man with femoral Streptococcus pneumoniae pyomyositis as well as hypercalcemia, mild anemia, and elevated inflammatory markers; he subsequently was diagnosed with immunoglobulin G (IgG) kappa multiple myeloma. CONCLUSION: Multiple myeloma most commonly affects patients who are >60 years of age, and causes clinical symptoms from anemia, lytic bone lesions, hypercalcemia, and renal failure. These findings and a monoclonal protein spike serve as initial diagnostic and treatment criteria...
July 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29199718/multiple-myeloma-experience-of-an-institute-in-limited-resource-setting
#6
Linu Abraham Jacob, M C Suresh Babu, K C Lakshmaiah, K Govind Babu, D Lokanatha, L K Rajeev, K N Lokesh, A H Rudresha, Ankit Agarwal, Sunny Garg
INTRODUCTION: Multiple myeloma (MM) is a plasma cell dyscrasias and an incurable clonal B-cell malignancy, with an annual incidence of 1% of all malignancies. The mainstay of treatment of myeloma is induction treatment followed by consolidation with autologous stem cell transplant (ASCT). However, still in a developing country like India where affordability is a major hurdle for health care, a number of MM patients are not able to undergo ASCT. AIM: To study the epidemiological features and outcome of MM patients treated in a limited resource setting...
January 2017: Indian Journal of Cancer
https://www.readbyqxmd.com/read/29187931/-diagnostic-and-evolutionary-profile-of-multiple-myeloma-in-senegal-monocentric-study-conducted-from-2005-to-2016
#7
Seynabou Fall, Fatma Dieng, Coumba Diouf, Boundia Djiba, Awa Cheikh Ndao, Fatou Samba Diago Ndiaye
Introduction: Accessibility to innovative multiple myeloma therapies is limited in sub-Saharan Africa. This study aimed to describe the diagnostic and evolutionary features observed during treatment of our patients with myeloma. Methods: We conducted a retrospective, descriptive, analytical study (2005 - 2016) of patients with myeloma included in the study based on International Myeloma Working Group (IMWG) Criteria (2003,2014) at the Hopital Aristide Le Dantec (Senegal)...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29184450/coexisting-multiple-myeloma-lymphoma-and-non-small-cell-lung-cancer-a-case-report-and-review-of-the-literature
#8
Parth Khade, Srinivas Devarakonda
Multiple myeloma is a plasma cell dyscrasia characterized by neoplastic proliferation of plasma cells, producing a monoclonal immunoglobulin. Small lymphocytic lymphoma (SLL) is a neoplasm consisting of monoclonal B-cell lymphocyte proliferation. We present an extremely rare case of coexisting multiple myeloma, SLL, and squamous cell carcinoma of the lung in a 74-year-old female patient. She initially presented with a midline mass with pain in the lumbar area. Debulking surgery was performed, and pathology showed plasmacytoma...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/29174537/flow-cytometry-based-method-for-rapid-and-high-throughput-screening-of-hybridoma-cells-secreting-monoclonal-antibody
#9
Sachi Akagi, Chika Nakajima, Yoichiro Tanaka, Yasuyuki Kurihara
Monoclonal antibodies (mAbs) are a valuable biomaterial for basic life sciences and industrial purposes. The production of the mAb is time and effort intensive. In this report, we established a time- and labor-saving method for the mAb production. Because membrane-type immunoglobulin on a hybridoma cell surface and its secreted form, called as antibody, share the same binding property to the antigen, the fluorescence-labeled antigen bound to membrane-type immunoglobulin can be used as a screening marker. In the method, a hybridoma labeled by a fluorescent antigen was selected and sorted singly into 96-well plate using flow cytometer...
November 22, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29159320/immunogenicity-and-persistence-of-the-13-valent-pneumococcal-conjugate-vaccine-pcv13-in-patients-with-untreated-smoldering-multiple-myeloma-smm-a-pilot-study
#10
Mathilde Bahuaud, Hélène Bodilis, Marion Malphettes, Anaïs Maugard Landre, Caroline Matondo, Didier Bouscary, Frédéric Batteux, Odile Launay, Jean-Paul Fermand
Smoldering multiple myeloma (SMM) is an asymptomatic clonal plasma cell disorder that frequently progress to multiple myeloma (MM), a disease at high risk of pneumococcal infections. Moreover, if the polysaccharide vaccine is poorly immunogenic in MM, the 13-valent conjugated vaccine has never been tested in clonal plasma cell disorders. We evaluated its immunogenicity for 7 serotypes in 20 patients ≥ 50 years of age with smoldering multiple myeloma (SMM) pre and post routine-vaccination with PCV13. Concentrations of IgG specific for 7 serotypes were measured at baseline, 1, 6, and 12 months after vaccination by standardized ELISA and an Opsonophagocytic Assay (OPA)...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29146225/response-comparison-of-multiple-myeloma-and-monoclonal-gammopathy-of-undetermined-significance-to-the-same-anti-myeloma-therapy-a-retrospective-cohort-study
#11
John P Campbell, Jennifer L J Heaney, Sankalp Pandya, Zaheer Afzal, Martin Kaiser, Roger Owen, J Anthony Child, David A Cairns, Walter Gregory, Gareth J Morgan, Graham H Jackson, Chris M Bunce, Mark T Drayson
BACKGROUND: Multiple myeloma is consistently preceded by monoclonal gammopathy of undetermined significance (MGUS), which is usually only treated by a form of anti-multiple myeloma therapy if it is causing substantial disease through deposition of secreted M proteins. However, studies comparing how MGUS and multiple myeloma plasma cell clones respond to these therapies are scarce. Biclonal gammopathy multiple myeloma is characterised by the coexistence of an active multiple myeloma clone and a benign MGUS clone, and thus provides a unique model to assess the responses of separate clones to the same anti-multiple myeloma therapy, in the same patient, at the same time...
November 13, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/29110637/constitutional-mutation-in-cdkn2a-is-associated-with-long-term-survivorship-in-multiple-myeloma-a-case-report
#12
Vallari Shah, Kevin D Boyd, Richard S Houlston, Martin F Kaiser
BACKGROUND: Multiple Myeloma is a cancer of plasma cells associated with significantly reduced survival. Long term survivorship from myeloma is very rare and despite advances in its treatment the disease is generally considered incurable. We report a patient diagnosed with myeloma carrying a germline mutation of a tumour suppressor gene who has effectively been cured. CASE PRESENTATION: A 36-year-old woman was diagnosed with IgG lambda myeloma in 1985. She was treated with melphalan chemotherapy followed by high-dose melphalan and autologous stem cell rescue and since remained in complete remission despite not having received any additional therapy...
November 6, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29098000/pro-inflammatory-state-in-monoclonal-gammopathy-of-undetermined-significance-and-in-multiple-myeloma-is-characterized-by-low-sialylation-of-pathogen-specific-and-other-monoclonal-immunoglobulins
#13
Adrien Bosseboeuf, Sophie Allain-Maillet, Nicolas Mennesson, Anne Tallet, Cédric Rossi, Laurent Garderet, Denis Caillot, Philippe Moreau, Eric Piver, François Girodon, Hélène Perreault, Sophie Brouard, Arnaud Nicot, Edith Bigot-Corbel, Sylvie Hermouet, Jean Harb
Multiple myeloma (MM) and its pre-cancerous stage monoclonal gammopathy of undetermined significance (MGUS) allow to study immune responses and the chronology of inflammation in the context of blood malignancies. Both diseases are characterized by the production of a monoclonal immunoglobulin (mc Ig) which for subsets of MGUS and MM patients targets pathogens known to cause latent infection, a major cause of inflammation. Inflammation may influence the structure of both polyclonal (pc) Ig and mc Ig produced by malignant plasma cells via the sialylation of Ig Fc fragment...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29070125/-effects-of-recombinant-human-erythropoietin-on-mpc-11-myeloma-cells-cultured-in-vitro
#14
Yan Zeng, Jia-Li Zhou, Cai-Gang Xu
OBJECTIVE: To explore the effect of recombinant human erythropoietin (rhEPO) on myeloma cell line MPC-11 in vitro and its anti-tumor mechamism so as to provide the theoretic evidence for treatment of multiple myeloma by using rhEPO. METHODS: MPC-11 cells were cultured in RPMI 1640 medium, then the MPC-11 cells in logarithmic growth phase were seed in 96 well culture plates at a density of 1×10(4)/ml cells with 100 µl per well. For all the experiments, the control and rhEPO groups were set up, and the rhEPO group was divided into different concentration groups: 20, 40, 60, 80, 100, 200 and 400 rhEPO U/ml...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29070124/-analysis-of-relationship-between-serum-total-light-chain-%C3%AE%C2%BA-%C3%AE-ratio-and-proportion-of-bone-marrow-plasma-cells-in-patients-with-igg-type-and-iga-type-multiple-myeloma
#15
An-You Zhu, Fang-Bing Zhu, Feng-Chao Wang, Lun-Jun Zhang, Yue Ma, Jian-Guo Hu
OBJECTIVE: To explore the relationship between serum total light chain κ/λ ratio (sTLC-κ/λ) and proportion of bone marrow plasma cells (BMPC) in patients with IgG type and IgA type multiple myeloma (MM) and its clinical significance. METHODS: The levels of serum IgG, IgA, κ type and λ type total light chain were detected in 79 newly diagnosed patients with IgG type (n=52) and IgA type (n=27) MM by immuno-nephelometric assay and the sTLC-κ/λ ratio was calculated...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29027517/-unexpected-symptoms-of-monoclonal-gammopathy
#16
P M Smit, A C Abrahams, R G E Schutgens, N C Notermans, M C Minnema
Monoclonal gammopathy of undetermined significance (MGUS) is a common haematological disorder characterized by the presence of a monoclonal protein (M-protein). MGUS is considered an asymptomatic 'innocent' pre-malignant precursor condition of - mostly - multiple myeloma, without indication for treatment. We present three cases illustrating that MGUS can lead to serious problems. The first patient, a 51-year-old female, presented with polyneuropathy due to anti-MAG antibodies related to IgM MGUS. The second patient, a 37-year-old female, presented with proteinuria due to immunotactoid glomerulopathy caused by renal monoclonal IgG deposition associated with MGUS...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29021436/multiple-myeloma-presenting-with-autoimmune-autonomic-ganglionopathy
#17
Yoshiki Nakae, Mizuki Hyuga, Wataru Kishimoto, Akiko Fukunaga, Sumie Tabata, Yoshitomo Maesako, Nobuyoshi Arima, Yuta Terada, Kenichi Komatsu, Osamu Higuchi, Shunya Nakane
Autoimmune autonomic ganglionopathy is an autonomic disorder that occurs as a symptom of paraneoplastic neurological syndrome. To date, there have been no reports on multiple myeloma with autoimmune autonomic ganglionopathy. A 37-year-old Japanese woman suffered from orthostatic hypotension was diagnosed with multiple myeloma (IgG kappa type), and a serological examination revealed the presence of anti-ganglionic nicotinic acetylcholine receptor (anti-gAChR) antibodies. She was treated for multiple myeloma, as a result, the autonomic disturbance improved and her anti-gAChR antibody titer decreased to undetectable levels, despite the fact that she only achieved a partial remission of multiple myeloma...
October 11, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28983805/influence-of-disease-and-patient-characteristics-on-daratumumab-exposure-and-clinical-outcomes-in-relapsed-or-refractory-multiple-myeloma
#18
Xiaoyu Yan, Pamela L Clemens, Thomas Puchalski, Sagar Lonial, Henk Lokhorst, Peter M Voorhees, Saad Usmani, Paul G Richardson, Torben Plesner, Kevin Liu, Robert Z Orlowski, Nedjad Losic, Richard Jansson, Tahamtan Ahmadi, Kristen Lantz, Juan Jose Perez Ruixo, Honghui Zhou, Xu Steven Xu
OBJECTIVE: The aim of this study was to understand the influence of disease and patient characteristics on exposure to daratumumab, an immunoglobulin Gκ (IgGκ) monoclonal antibody, and clinical outcomes in relapsed or refractory multiple myeloma (MM). PATIENTS AND METHODS: Baseline myeloma type, albumin levels, renal/hepatic function, age, sex, race, weight, Eastern Cooperative Oncology Group (ECOG) status, refractory status, and number of prior therapies were evaluated using data from two clinical studies-GEN501 (N = 104) and SIRIUS (N = 124)...
October 5, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28978808/monoclonal-igg-in-mgus-and-multiple-myeloma-targets-infectious-pathogens
#19
Adrien Bosseboeuf, Delphine Feron, Anne Tallet, Cédric Rossi, Cathy Charlier, Laurent Garderet, Denis Caillot, Philippe Moreau, Marina Cardó-Vila, Renata Pasqualini, Wadih Arap, Alfreda Destea Nelson, Bridget S Wilson, Hélène Perreault, Eric Piver, Pierre Weigel, François Girodon, Jean Harb, Edith Bigot-Corbel, Sylvie Hermouet
Subsets of mature B cell neoplasms are linked to infection with intracellular pathogens such as Epstein-Barr virus (EBV), hepatitis C virus (HCV), or Helicobacter pylori. However, the association between infection and the immunoglobulin-secreting (Ig-secreting) B proliferative disorders remains largely unresolved. We investigated whether the monoclonal IgG (mc IgG) produced by patients diagnosed with monoclonal gammopathy of undetermined significance (MGUS) or multiple myeloma (MM) targets infectious pathogens...
October 5, 2017: JCI Insight
https://www.readbyqxmd.com/read/28912918/prospective-identification-of-oligoclonal-abnormal-band-of-the-same-immunoglobulin-type-as-the-malignant-clone-by-differential-location-of-m-spike-and-oligoclonal-band
#20
Shikhar G Vyas, Gurmukh Singh
BACKGROUND: Serum and urine protein electrophoreses and immunofixation electrophoreses are the gold standards in diagnosing monoclonal gammopathy. Identification of oligoclonal bands in post-treatment patients has emerged as an important issue and recording the location of the malignant monoclonal peak may facilitate prospective identification of a new "monoclonal" spike as being distinct from the malignant peak. METHODS: We recorded the locations of monoclonal spikes in descriptive terms, such as being in the cathodal region, mid-gamma region, anodal region, and beta region...
October 2017: Journal of Clinical Medicine Research
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