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Monoclonal gammopathy

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https://www.readbyqxmd.com/read/28229908/multiple-myeloma-tumor-cells-are-selectively-killed-by-pharmacologically-dosed-ascorbic-acid
#1
Jiliang Xia, Hongwei Xu, Xiaoyan Zhang, Chantal Allamargot, Kristen L Coleman, Randy Nessler, Ivana Frech, Guido Tricot, Fenghuang Zhan
High-dose chemotherapies to treat multiple myeloma (MM) can be life-threatening due to toxicities to normal cells and there is a need to target only tumor cells and/or lower standard drug dosage without losing efficacy. We show that pharmacologically-dosed ascorbic acid (PAA), in the presence of iron, leads to the formation of highly reactive oxygen species (ROS) resulting in cell death. PAA selectively kills CD138(+) MM tumor cells derived from MM and smoldering MM (SMM) but not from monoclonal gammopathy undetermined significance (MGUS) patients...
February 16, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28212987/corrigendum-to-an-increased-cdt-camouflaged-a-monoclonal-light-chain-gammopathy-an-approach-for-diagnosis-clin-biochem-49-2016-835-838
#2
M Barbaro, G Passerini, M Trbos, A Soldarini, M Locatelli
No abstract text is available yet for this article.
February 14, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28208846/a-rare-case-of-multiple-myeloma-with-biclonal-gammopathy
#3
Abhik Banerjee, Kshama Pimpalgaonkar, Alap Lukiyas Christy
Multiple myeloma is a debilitating malignancy arising from plasma cells. These malignant plasma cells called myeloma cells proliferate and infiltrate the bone marrow. The disease is characterized by the presence of a monoclonal protein in plasma and/or the urine. In this report, we present a case of biclonal multiple myeloma which showed two M bands on serum protein electrophoresis. The patient had elevated serum IgA and IgG levels. To reveal the nature of M bands or clonality, serum Immunofixation study was performed which revealed IgA with Lambda and IgG with Kappa light chains...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28202168/paraprotein-associated-thrombotic-microangiopathy-expanding-the-spectrum-of-renal-disease-related-to-plasma-cell-dyscrasias
#4
Mercury Lin, Mark Haas
Plasma cell dyscrasias are associated with a variety of renal diseases, most resulting from the deposition of intact or altered monoclonal paraproteins within the renal parenchyma. Much less commonly, renal disease resulting from monoclonal gammopathies has been reported without actual accumulation of the paraprotein or a derivative of it within the kidney. One such instance involves thrombotic microangiopathy (TMA), which is a consequence of endothelial cell injury. New data from the Mayo Clinic indicate that the association of TMA with monoclonal gammopathies is far more frequent than previously appreciated...
March 2017: Kidney International
https://www.readbyqxmd.com/read/28201978/multiple-myeloma-and-the-immune-microenvironment
#5
Yawara Kawano, Aldo M Roccaro, Jamil Azzi, Irene M Ghobrial
One of the great advances in the field of cancer therapy in recent years is the emergence of immune therapies. Immune therapies, especially immune checkpoint inhibitors, have shown promising results in pre-clinical models and clinical trials of solid tumors, such as melanoma, breast cancer and lung cancer. Therapeutic strategies targeting the immune microenvironment have also been applied to hematological malignancies such as multiple myeloma (MM), a plasma cell neoplasia characterized by clonal expansion of malignant plasma cells mainly in the bone marrow (BM)...
February 13, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28186653/progression-of-cutaneous-plasmacytoma-to-plasma-cell-leukemia-in-a-dog
#6
Emily D Rout, Alba Maria M Shank, Angharad H K Waite, Andrea Siegel, Anne C Avery, Paul R Avery
A 5-year-old male neutered Bernese Mountain Dog was presented for cutaneous plasmacytoma, which was treated by surgical excision. Four months later, the dog developed multiple skin masses, hyphema, pericardial and mild bicavitary effusions, myocardial masses, and marked plasmacytosis in the peripheral blood. Circulating plasma cells expressed CD34 and MHC class II by flow cytometry. Immunocytochemistry demonstrated that these cells were strongly positive for multiple myeloma oncogene 1/interferon regulatory factor 4 (MUM-1) and weakly to moderately positive for Pax5...
February 10, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28182355/pure-red-cell-aplasia-associated-with-monoclonal-gammopathy-of-undetermined-significance-and-literature-review
#7
Hyunjung Gu, Woo-In Lee, You La Jeon, So Young Kang, Myeong Hee Kim, Tae Sung Park
BACKGROUND: Pure red cell aplasia (PRCA) is an uncommon disease which involves an almost complete absence of the erythroid lineage in bone marrow (BM) and causes severe anemia. Cases due to monoclonal gammopathy occurring in plasma cell disorder have been infrequently reported. Here we report a case of PRCA associated plasma cell disorder, especially monoclonal gammopathy of undetermined significance (MGUS). METHODS: A 55-year-old male visited the ER due to general weakness...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28176474/monoclonal-gammopathy-of-renal-significance-triggering-atypical-haemolytic-uraemic-syndrome
#8
REVIEW
Usman Mahmood, Nicole Isbel, Peter Mollee, Andrew Mallett, Sridevi Govindarajulu, Ross Francis
Haemolytic uraemic syndrome is a rare condition with an overall incidence of one to two cases in a population of 100 000 and approximately 10% of these cases are classified as atypical. Atypical haemolytic uraemic syndrome (aHUS) is a thrombotic microangiopathy (TMA) characterized by microangiopathic haemolytic anaemia (MAHA), thrombocytopenia and acute kidney injury. aHUS can be genetic, acquired or idiopathic (negative genetic screening and no environmental triggers). We describe a case of aHUS triggered by monoclonal gammopathy of renal significance (MGRS) successfully treated with plasmapheresis and a bortezomib-based chemotherapy regimen, resulting in marked improvement in renal function and other markers of haemolysis...
February 2017: Nephrology
https://www.readbyqxmd.com/read/28176473/durable-remission-of-c3-glomerulonephritis-with-mycophenolate-mofetil
#9
REVIEW
Nicole Lioufas, Moira Finlay, Thomas Barbour
In C3 glomerulopathy, uncontrolled complement C3 activation via the alternative pathway results in glomerular C3 deposition and, in many cases, progressive renal failure. Despite advances in understanding of C3G pathogenesis over the last few years, there are no proven treatments. We describe a patient in whom C3 glomerulopathy was associated with renal impairment and elevated serum free kappa light chains. An initial response to corticosteroids was followed by relapse once steroids were weaned, prompting use of mycophenolate mofetil to maintain remission...
February 2017: Nephrology
https://www.readbyqxmd.com/read/28167270/free-light-chain-and-intact-immunoglobulin-abnormalities-in-heart-transplant-recipients-two-year-follow-up-timelines-and-clinical-correlations
#10
Peter Sečník, Petra Lavríková, Lenka Hošková, Pavlína Malíková, Antonín Jabor, Janka Franeková
OBJECTIVES: To assess the timelines of serum free light chain (sFLC) concentrations and the kappa/lambda light chain (K/L) ratio in heart transplant (HTX) recipients. To analyze the performance of serum protein electrophoresis (SPE), serum immunofixation (sIFE) and sFLC measurements for gammopathy detection following a HTX. METHODS: A total of 96 patients who underwent a HTX were analyzed during a two-year follow-up period. The relevant clinical data were obtained from patient medical records...
February 3, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28158311/a-single-arm-open-label-phase-2-clinical-trial-evaluating-disease-response-following-treatment-with-bi-505-a-human-anti-intercellular-adhesion-molecule-1-monoclonal-antibody-in-patients-with-smoldering-multiple-myeloma
#11
Stina Wichert, Gunnar Juliusson, Åsa Johansson, Elisabeth Sonesson, Ingrid Teige, Anna Teige Wickenberg, Björn Frendeus, Magnus Korsgren, Markus Hansson
BACKGROUND: Smoldering multiple myeloma (SMM) is an indolent disease stage, considered to represent the transition phase from the premalignant MGUS (Monoclonal Gammopathy of Undetermined Significance) state towards symptomatic multiple myeloma (MM). Even though this diagnosis provides an opportunity for early intervention, few treatment studies have been done and the current standard of care is observation until progression. BI-505, a monoclonal antibody directed against intercellular adhesion molecule 1 (ICAM-1) with promising anti-myeloma activity in preclinical trials, is a possible treatment approach for this patient category with potential to eliminate tumor cells with minimal long-term side effects...
2017: PloS One
https://www.readbyqxmd.com/read/28139293/clinical-biopsy-and-mass-spectrometry-findings-of-renal-gelsolin-amyloidosis
#12
Sanjeev Sethi, Surendra Dasari, Md Shahrier Amin, Julie A Vrana, Jason D Theis, Mariam P Alexander, Paul J Kurtin
Gelsolin amyloidosis is a rare type of amyloidosis typically involving the cranial and peripheral nerves, but rarely the kidney. Here we report the clinical, kidney biopsy, and mass spectrometry findings in 12 cases of renal gelsolin amyloidosis. Of the 12 patients, five were men and seven were women with mean age at diagnosis of 63.8 years. Gelsolin amyloidosis was most common in Caucasians (six patients) and Asians (four patients), and included one each African-American and Hispanic patients. Nephrotic syndrome was the most common cause of biopsy, although most patients also had progressive loss of kidney function...
January 27, 2017: Kidney International
https://www.readbyqxmd.com/read/28133484/polyneuropathy-as-novel-initial-manifestation-in-a-case-of-nonsecretory-poems-syndrome-with-sj%C3%A3-gren-s-syndrome
#13
Minrui Liang, Zhixing Jiang, Zhiguang Lin, Bobin Chen, Hejian Zou, Weiguo Wan, Jun Liu
POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) is a paraneoplastic syndrome driven by plasma cell dyscrasias. We report a patient with novel initial manifestation of polyneuropathy, which was considered due to Sjögren's syndrome but with poor response to methylprednisolone (120 mg/d) and intravenous immunoglobulin (IVIg). Further investigation by imaging tests and following biopsy eventually confirmed the diagnosis of POEMS syndrome secondary to solitary plasmocytoma...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28122920/combined-traf6-targeting-and-proteasome-blockade-has-anti-tumor-and-anti-bone-resorptive-effects
#14
Haiming Chen, Mingjie Li, Eric Sanchez, Cathy S Wang, Tiffany Lee, Camilia M Soof, Christian E Casas, Jasmin Cao, Colin Xie, Kyle A Udd, Kevin DeCorso, George Y Tang, Tanya M Spektor, James R Berenson
: Tumor necrosis factor receptor-associated factor 6 (TRAF6) has been implicated in polyubiquitin-mediated IL-1R/TLR signaling through activation of IκB kinase (IKK) to regulate the NF-κB and JNK signaling pathways. Here, TRAF6 protein was determined to be overexpressed in bone marrow mononuclear cells (BMMCs) from multiple myeloma (MM) patients. TRAF6 expression in BMMCs from patients with progressive disease is significantly elevated as compared to individuals in complete remission, with monoclonal gammopathy of undetermined significance, or healthy subjects...
January 25, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28116941/pomalidomide-experience-an-effective-therapeutic-approach-with-immunomodulatory-drugs-in-a-patient-with-relapsed-refractory-multiple-myeloma
#15
Concetta Conticello, Marina Parisi, Alessandra Romano, Valeria Calafiore, Flavia Ancora, Alessia La Fauci, Maria Letizia Consoli, Francesco Di Raimondo
Here we discuss the case of a heavily pretreated male patient with relapsed-refractory multiple myeloma and previous monoclonal gammopathy of undetermined significance who initiated a fifth-line treatment with pomalidomide (4 mg orally, days 1-21 of a 28-day cycle) and low-dose dexamethasone (40 mg weekly orally). A total of 3 months later, very good partial response was achieved and complete response was maintained for 7 months. This case illustrates the field-practice experience on the benefits of pomalidomide in a relapsed-refractory multiple myeloma patient with a previous history of monoclonal gammopathy of undetermined significance...
February 2017: Future Oncology
https://www.readbyqxmd.com/read/28111455/glomerular-disease-chemotherapy-for-monoclonal-gammopathy-associated-c3g
#16
Susan J Allison
No abstract text is available yet for this article.
January 23, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28100909/impact-of-pretransplant-induction-therapy-on-autologous-stem-cell-transplantation-for-patients-with-newly-diagnosed-poems-syndrome
#17
J Li, M-H Duan, C Wang, X-F Huang, W Zhang, X-X Cao, T-N Zhu, J-L Zhuang, B Han, H Cai, H-C Cai, D-B Zhou
POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, Monoclonal gammopathy and skin changes) is a rare plasma cell dyscrasia sometimes treated with a haematopoietic cell autotransplant. We analyzed data from 138 subjects with newly-diagnosed POEMS syndrome receiving a autotransplant at our centre. Thirty-two subjects with severe end-organ dysfunction ineligible for immediate autotransplant received pretransplant therapy which made a subsequent autotransplant feasible. Pretransplant therapy resulted in vascular endothelial growth factor (VEGF) remissions in 15 (47%)...
January 19, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28099617/case-for-diagnosis-lichen-myxedematosus
#18
Priscila Regina Orso Rebellato, Mauren Beatriz Frazon Carbonar, Nicole Iasmin Magario Tabuti, Graziela Junges Crescente Rastelli
Scleromyxedema or lichen myxedematosus is a rare papular mucinosis of chronic and progressive course and unknown etiology. It is commonly associated with monoclonal gammopathy and may show extracutaneous manifestations, affecting the heart, lung, kidney, and nerves. The diagnosis is based on four criteria: generalized papular and sclerodermoid lesions; mucin deposition, fibroblast proliferation, and fibrosis in the histopathology; monoclonal gammopathy; and no thyroid disorders. This article reports the case of a scleromyxedema patient with a recent history of acute myocardial infarction and monoclonal gammopathy...
November 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28094164/disorders-characterized-by-predominant-or-exclusive-dermal-inflammation
#19
Mark R Wick
Some cutaneous inflammatory disorders are typified by a predominant or exclusive localization in the dermis. They can be further subdivided by the principal cell types into lymphocytic, neutrophilic, and eosinophilic infiltrates, and mixtures of them are also seen in a proportion of cases. This review considers such conditions. Included among the lymphoid lesions are viral exanthems, pigmented purpuras, gyrate erythemas, polymorphous light eruption, lupus tumidus, and cutaneous lymphoid hyperplasia. Neutrophilic infiltrates are represented by infections, Sweet syndrome, pyoderma gangrenosum, and hidradenitis suppurativa, as well as a group of so-called "autoinflammatory" dermatitides comprising polymorphonuclear leukocytes...
December 14, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28088969/-the-clinical-features-of-patients-with-lymphoplasmacytic-diseases-harboring-myd88-l265p-mutation
#20
Y Ren, B Q Zhou, Y Xu, C C Fu, H J Shen, Z X Ding, D P Wu
Objective: To explore the clinical features of lymphoplasmacytic diseases with MyD88 L265P mutation. Methods: To analyze the distribution of MYD88 L265P mutation in patients with lymphoplasmacytic diseases by using of ARMS PCR-CE. Results: There were 25(30.9%) MyD88 L265P mutated patients in 81 patients. The mutation was frequently observed in 14 patients with WM (77.8%, 14/18), 2 patients with lymphoplasmacytic lymphoma (66.7%, 2/3), 1 acute lymphocytic leukemia patient (50.0%, 1/2), 3 multiple myeloma patients (30...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
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