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https://www.readbyqxmd.com/read/29342381/long-term-follow-up-of-monoclonal-gammopathy-of-undetermined-significance
#1
Robert A Kyle, Dirk R Larson, Terry M Therneau, Angela Dispenzieri, Shaji Kumar, James R Cerhan, S Vincent Rajkumar
BACKGROUND: Monoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older. METHODS: We studied 1384 patients who were residing in southeastern Minnesota and in whom MGUS was diagnosed at the Mayo Clinic in the period from 1960 through 1994; the median follow-up was 34.1 years (range, 0.0 to 43.6). The primary end point was progression to multiple myeloma or another plasma-cell or lymphoid disorder. RESULTS: During 14,130 person-years of follow-up, MGUS progressed in 147 patients (11%), a rate that was 6...
January 18, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29326807/heavy-chain-diseases-and-myeloma-associated-fanconi-syndrome-an-update
#2
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/29323083/monoclonal-gammopathy-with-double-m-bands-an-atypical-presentation-on-serum-protein-electrophoresis-simulating-biclonal-gammopathy
#3
Kaustubh Bora, Umesh Das, Bhupen Barman, Alice Abraham Ruram
Monoclonal gammopathies, such as multiple myeloma, typically exhibit high levels of a monoclonal immunoglobulin (M-protein), produced by a clone of abnormally proliferating B-lymphocytes and/or plasma cells. The M-protein can be evaluated by serum protein electrophoresis (SPEP), which yields a single discrete band (M-band), usually in the γ-globulin region. Rarely, two M-bands appear simultaneously at different positions during SPEP - a condition known as biclonal gammopathy, which is a result of clonal expansion of two different neoplastic cell lines...
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29318955/case-report-of-igm-multiple-myeloma-diagnosing-a-rare-hematologic-entity
#4
Fernando Javier Bonilla-Valentín, Javier Cerra, William Cáceres-Perkins, Melissa Alsina
IgM multiple myeloma is an exceedingly rare hematologic entity comprising only less than 0.5% of multiple myeloma cases. Given the rarity of this disorder, it makes it a challenge to differentiate from other more prevalent hematologic disorders like Waldenstrom macroglobulinemia. These 2 diseases have the common finding of an IgM monoclonal gammopathy and distinguishing between these 2 diagnoses is of great importance given that therapy and prognosis differ significantly. This report illustrates the case of a 64-year-old man who presented with IgM lambda monoclonal gammopathy in whom signs, symptoms, laboratories, and imaging were initially thought to be consistent with Waldenstrom macroglobulinemia...
January 2018: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/29314079/the-high-frequency-of-monoclonal-gammopathy-in-patients-with-diabetic-sensorimotor-polyneuropathy
#5
Alon Abraham, Carolina Barnett, Hans D Katzberg, Leif E Lovblom, A Perkins Bruce, Vera Bril
INTRODUCTION: Monoclonal gammopathy has been reported in several polyneuropathies. In this study, we aimed to explore the frequency and characteristics of monoclonal gammopathy in patients with diabetic sensorimotor polyneuropathy (DSP). METHODS: Patients with type 1 and 2 diabetes mellitus (DM 1, DM 2), and controls without diabetes, were evaluated between November 2008 and December 2013. RESULTS: 50 controls, 66 patients with DM 1, and 106 patients with DM 2, were included, with an average age of 43 ± 18, 45 ± 17, and 65 ± 10 years respectively...
January 4, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29284595/molecular-genetic-investigation-clinical-features-and-response-to-treatment-in-21-patients-with-schnitzler-s-syndrome
#6
Dorota M Rowczenio, Shelly Pathak, Juan I Arostegui, Anna Mensa-Vilaro, Ebun Omoyinmi, Paul Brogan, Dan Lipsker, Thomas Scambler, Roger Owen, Hadija Trojer, Anna Baginska, Julian D Gillmore, Ashutosh D Wechalekar, Thirusha Lane, Rene Williams, Taryn Youngstein, Philip N Hawkins, Sinisa Savic, Helen J Lachmann
To date, the pathogenic mechanisms underlying Schnitzler's syndrome remain obscure, in particular the interplay between the monoclonal protein and increased IL-1beta production, although interest in the contribution of genetic factors has been fuelled by detection of somatic NLRP3 mosaicism in two patients with the variant-type Schnitzler's syndrome. At two specialist UK centres we have identified 21 patients, who fulfilled diagnostic criteria for Schnitzler's syndrome with urticarial rash, fever, arthralgia and bone pain; 47% reported weight loss, 40% fatigue and 21% lymphadenopathy...
December 28, 2017: Blood
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
#7
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/29242186/biased-igh-vdj-gene-repertoire-and-clonal-expansions-in-b-cells-of-chronically-hepatitis-c-virus-infected-individuals
#8
Felicia A Tucci, Simo Kitanovski, Patricia Johansson, Ludger Klein-Hitpass, Alisan Kahraman, Jan Dürig, Daniel Hoffmann, Ralf Küppers
Patients chronically infected with hepatitis C virus (HCV) frequently develop mixed cryoglobulinemia (MC), a monoclonal expansion of IgM+ autoreactive B cells, and also have an increased B cell lymphoma risk. Whether HCV infection also impacts the B cell compartment and the B cell receptor repertoire in patients not affected by MC or lymphomas is poorly understood. Flow cytometric analysis of peripheral blood B cells of 30 MC-negative HCV-infected patients and 15 healthy controls revealed that frequencies of class-switched memory B cells were increased in the patients, whereas frequencies of transitional and naive B cells were decreased...
December 14, 2017: Blood
https://www.readbyqxmd.com/read/29241957/evaluation-of-adsorption-selectivity-of-immunoglobulins-m-a-and-g-and-purification-of-immunoglobulin-m-with-mixed-mode-resins
#9
Ying-Di Luo, Qi-Lei Zhang, Shan-Jing Yao, Dong-Qiang Lin
This study investigated adsorption selectivity of immunoglobulin M (IgM), immunoglobulin A (IgA) and immunoglobulin (IgG) on four mixed-mode resins with the functional ligands of 4-mercatoethyl-pyridine (MEP), 2-mercapto-1-methylimidazole (MMI), 5-aminobenzimidazole (ABI) and tryptophan-5-aminobenzimidazole (W-ABI), respectively. IgM purification processes with mixed-mode resins were also proposed. All resins showed typical pH-dependent adsorption, and high adsorption capacity was found at pH 5.0-8.0 with low adsorption capacity under acidic conditions...
December 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29230710/a-case-report-of-proliferative-glomerulonephritis-with-monoclonal-immunoglobulin-m-kappa-deposits-without-associated-lymphoproliferative-disorder-or-detectable-paraproteinemia
#10
Yoshito Yamaguchi, Kunihiko Maeda, Katsuyuki Nagatoya, Atsushi Yamauchi
A 53-year-old man presented with proteinuria and hematuria. No significant abnormality was detected in his physical examination or laboratory tests, including evidence of paraprotein in serum and urine. Renal biopsy revealed mesangial proliferation, thickened glomerular basement membranes, and spike formation. Immunofluorescence revealed deposition of immunoglobulin (Ig) M heavy chain, kappa (κ) light chain, and complement component C3 along capillary walls in the glomeruli. Light chain staining indicated significant restriction, because only κ chain, not lambda chain, was present in glomeruli...
December 11, 2017: CEN Case Reports
https://www.readbyqxmd.com/read/29225979/waldenstrom-s-macroglobulinemia-a-report-of-two-cases-one-with-severe-retinopathy-and-one-with-renal-failure
#11
Naoko Kudo, Masakatsu Usui, Yukiharu Nakabo, Ken-Ichi Yoshida, Kenji Miki, Takashi Osafune, Keisuke Nishimura, Shinsaku Imashuku
We report here two cases of Waldenstrom's macroglobulinemia (WM), one with central nervous system (CNS) symptoms and severe retinopathy and one with renal failure. In both cases, the serum IgM levels exceeded 3,000 mg/dL and monoclonal IgM-kappa was observed in the blood. At onset, Case 1, a 63-year-old female, developed CNS symptoms-namely, drowsiness and syncope. Case 2, a 58-year-old male, had nausea and dysgeusia on admission associated with renal failure, which is quite rare in patients with WM. Both patients exhibited hyperviscosity-related retinopathy, but it was particularly severe in Case 1: she suddenly lost her vision after admission...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/29225799/kidney-involvement-in-the-schnitzler-syndrome-a-rare-disease
#12
REVIEW
Carlo Basile, Luigi Rossi, Francesco Casucci, Annalisa Teutonico, Pasquale Libutti, Piero Lisi, Carlo Lomonte, Raffaele Manna
The Schnitzler syndrome (SS) is a rare and underdiagnosed entity that associates a chronic urticarial rash, monoclonal IgM (or sometimes IgG) gammopathy and signs and symptoms of systemic inflammation. During the past 45 years, the SS has evolved from an elusive little-known disorder to the paradigm of a late-onset acquired auto-inflammatory syndrome. Though there is no definite proof of its precise pathogenesis, it should be considered as an acquired disease involving abnormal stimulation of the innate immune system, which can be reversed by the interleukin-1 receptor antagonist anakinra...
December 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29224328/-clinical-characteristics-and-prognostic-analysis-of-monoclonal-igm-related-al-amyloidosis
#13
Y Y Mao, J Feng, Q Meng, K N Shen, X X Cao, D B Zhou, J Li
No abstract text is available yet for this article.
November 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29219127/dengue-fever-in-a-municipality-of-west-bengal-india-2015-an-outbreak-investigation
#14
Falguni Debnath, Manickam Ponnaiah, Pralay Acharya
BACKGROUND: In November 2015, death due to fever and increased number of fever cases were reported from Baranagar Municipality of North 24 Parganas district of West Bengal. OBJECTIVES: The episode was investigated with the objective to (1) confirm the existence of an outbreak, (2) describe it in terms of time, place, and person, (3) determine the cause of outbreak, and (4) recommend control measures. METHODS: Monthly incidence of dengue from 2012 to 2014 was calculated and compared with 2015 to confirm the outbreak...
October 2017: Indian Journal of Public Health
https://www.readbyqxmd.com/read/29218495/systemic-epstein-barr-virus-positive-t-cell-lymphoproliferative-disorders-of-childhood-with-fulminant-leukocytosis-and-tumor-lysis-a-case-report-with-autopsy-findings
#15
Sachie Wada, Takayuki Suzuki, Koichi Kitazume, Akira Fujita, Seiichiro Shimizu
Systemic Epstein-Barr virus (EBV)-positive T-cell lymphoproliferative disorders (T-LPD) of childhood is an extremely rare disease characterized by an aggressive clinical course and very poor prognosis. We report an adolescent male with systemic EBV-positive T-LPD of childhood after primary EBV infection, resulting in a fatal clinical course within 9 days, along with autopsy findings. A 19-year-old male without an immunocompromised status presented with an acute onset of high fever, and was hospitalized for persistent fever, vomiting and diarrhea on the 5th day from onset...
December 7, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29174537/flow-cytometry-based-method-for-rapid-and-high-throughput-screening-of-hybridoma-cells-secreting-monoclonal-antibody
#16
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/29169431/monoclonal-igm-gammopathy-and-waldenstr%C3%A3-m-s-macroglobulinemia
#17
Alexander Grunenberg, Christian Buske
BACKGROUND: 3.2-3.5% of persons over age 50 have a monoclonal gammopathy. Monoclonal gammopathies have many causes, including cancer. 10-20% of monoclonal gammopathies are of isotype IgM. A systematic approach to the differential diagnosis of IgM gammopathies is essential because of the different therapeutic implications of the various underlying conditions. METHODS: This review is based on pertinent publications retrieved by a selective search in PubMed and current guidelines from Germany and abroad...
November 3, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29159464/anti-mag-associated-cerebellar-ataxia-and-response-to-rituximab
#18
Panagiotis Zis, Dasappaiah Ganesh Rao, Nigel Hoggard, Ptolemaios Georgios Sarrigiannis, Marios Hadjivassiliou
BACKGROUND: Myelin-associated glycoprotein (MAG) is a glycoprotein specific to Schwann cells. Schwann cells produce myelin for nerve cells in the peripheral nervous system. MAG also plays a role in the central nervous system (CNS) by maintaining myelin integrity and inhibiting axonal regeneration from cerebellar neurons. There is a well-established link between distal demyelinating neuropathy and anti-MAG antibodies in patients with monoclonal gammopathy of unknown significance. We describe a series of five patients with anti-MAG antibodies with evidence of cerebellar rather than just sensory ataxia and our experience of treatment with rituximab...
January 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29153027/annals-express-large-abnormal-peak-on-capillary-zone-electrophoresis-due-to-contrast-agent
#19
Rachel D Wheeler, Liqun Zhang, Joanna Sheldon
BACKGROUND: Some iodinated radio-contrast media absorb UV light and can therefore be detected by capillary zone electrophoresis (CZE). If seen, these peaks are typically small with "quantifications" of below 5g/L. Here we describe detection of a large peak on CZE that was due to the radio-contrast agent, Omnipaque(T)(M). METHODS: Serum from a patient was analysed by CZE, and the IgG, IgA, IgM and total protein concentrations were measured. The serum sample was further analysed by gel electrophoresis and immunofixation...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/29132419/success-of-anti-cd20-monoclonal-antibody-treatment-for-severe-autoimmune-hemolytic-anemia-caused-by-warm-reactive-immunoglobulin-a-immunoglobulin-g-and-immunoglobulin-m-autoantibodies-in-a-child-a-case-report
#20
Houda Ajmi, Sameh Mabrouk, Saida Hassayoun, Haifa Regaieg, Minyar Tfifha, Chemli Jalel, Hadef Skouri, Noura Zouari, Saoussan Abroug
BACKGROUND: Autoimmune hemolytic anemia is rare in children. First-line therapies for this disease consist of corticosteroids and intravenously administered immunoglobulin that are effective in most patients. However, a small proportion of cases (5 to 10%) is refractory to these therapies and may represent a medical emergency, especially when hemolysis is due to warm immunoglobulin M. Recently, reports of the use of rituximab in adult autoimmune diseases have shown promising results. In children, there are few studies on the use of rituximab in the treatment for autoimmune hemolytic anemia, especially on its long-term efficacy and adverse effects...
November 14, 2017: Journal of Medical Case Reports
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