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https://www.readbyqxmd.com/read/28230820/the-distribution-of-tp53-gene-polymorphisms-in-chronic-lymphocytic-leukemia-patients-sufferers-of-chornobyl-nuclear-power-plant-accident
#1
N I Bilous, I V Abramenko, A A Chumak, I S Dyagil, Z V Martina
: Previous analyses in a cohort of Chornobyl cleanup workers revealed significantly increased radiation-related risk for all leukemia types, including chronic lymphocytic leukemia (CLL). Numerous investigations emphasized the significance of genetic susceptibility to the radiation carcinogenesis. The aim of the work was to study the distribution of TP53 single nucleotide polymorphisms (SNPs) in CLL patients exposed to ionizing radiation (IR) due to Chornobyl nuclear power plant accident and estimate their impact on disease development...
December 2016: Experimental Oncology
https://www.readbyqxmd.com/read/28230288/a-dual-label-time-resolved-fluorescence-immunoassay-for-the-simultaneous-determination-of-ferritin-and-%C3%AE-2-microglobulin
#2
Zhi Liu, Jing Huang, Rui-Ming Ou, Meng-Dong Yao, Yan-Lin She, Rui Chen, Cheng Li, Li Xu, Aikebaier Abudureyimu, Qing Zhang, Shuang Liu
BACKGROUND: Lymphocytic leukemia is a kind of primary malignant tumor of hematopoietic tissue. The aim was to establish a dual-label time-resolved fluorescence immunoassay (TRFIA) for the simultaneous determination of ferritin (FER) and β2 -microglobulin (β2 -MG) for the early screening and follow-up surveillance of lymphocytic leukemia. METHODS: The sandwich immunoassay was used to detect the concentration of FER, and the competitive immunoassay was used to detect the concentration of β2 -MG in serum...
February 23, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28225504/paraneoplastic-pemphigus-associated-with-chronic-lymphocytic-leukemia-a-case-report
#3
Qu Jiang, Bin Hong Zhang
RATIONALE: Paraneoplastic pemphigus (PNP) is an autoimmune syndrome associated with neoplasms. The treatment approach principally includes suppressing the immunity, but its therapeutic effect is not satisfying. PATIENT CONCERNS: We report a case of paraneoplastic pemphigus linked to chronic lymphocytic leukemia in a 63-year-old man. DIAGNOSES: At first, the patient was diagnosed with pityriasis rose caused by a viral infection. Biopsies for histology and immunofluorescence showed PNP, was treated with immunosuppressive and antiinfective therapy...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225293/rituximab-associated-progressive-multifocal-leukoencephalopathy
#4
Juraj Sokol, Lenka Lisá, Jana Zeleňáková, Tomáš Balhárek, Ivana Plameňová, Ján Staško, Peter Kubisz
The definition "Progressive Multifocal Leukoencephalopathy" (PML) was first used in 1958 to describe a fatal demyelinating central nervous system (CNS) disease in patients with lymphoproliferative disorders. In 1971, the virus responsible for the disease was isolated and named John Cunningham virus (JCV). We present a rare case of a 62-year-old male with chronic lymphocytic leukemia and PML. In our work, we discuss the diagnostic and therapeutic challenges and offer suggestions for preventing PML development...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28223822/profile-of-venetoclax-and-its-potential-in-the-context-of-treatment-of-relapsed-or-refractory-chronic-lymphocytic-leukemia
#5
REVIEW
Henriette Huber, Simone Edenhofer, Sven Estenfelder, Stephan Stilgenbauer
Over the last few years, dramatic changes have occurred in the treatment of chronic lymphocytic leukemia (CLL). The current standard for young and fit patients with CLL remains chemoimmunotherapy, namely the fludarabine, cyclophosphamide, and rituximab (FCR) regimen. However, novel oral therapies are presently being introduced and represent a considerable breakthrough concerning effectiveness and safety profile. In particular, the very high-risk group of CLL patients, defined by the genetic aberration del(17p) and/or TP53 mutation, benefit from the new agents...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28218042/doxorubicin-has-a-synergistic-cytotoxicity-with-cucurbitacin-b-in-anaplastic-thyroid-carcinoma-cells
#6
Si Hyoung Kim, Jun Goo Kang, Chul Sik Kim, Sung-Hee Ihm, Moon Gi Choi, Hyung Joon Yoo, Seong Jin Lee
In this study, the combined effect of doxorubicin with cucurbitacin B on survival of anaplastic thyroid carcinoma cells was evaluated. For experiments, 8505C and CAL62 human anaplastic thyroid carcinoma cells were used. Cell viability, the percentage of viable cells, and cytotoxic activity were measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, multiplexed cytotoxicity assay, and cytotoxicity assay, respectively. Reactive oxygen species production was measured. In experiments, doxorubicin and cucurbitacin B reduced cell viability in a dose- and time-dependent manner...
February 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28216660/results-of-the-randomized-phase-iib-admire-trial-of-fcr-with-or-without-mitoxantrone-in-previously-untreated-cll
#7
T Munir, D R Howard, L McParland, C Pocock, A C Rawstron, A Hockaday, A Varghese, M Hamblin, A Bloor, A Pettitt, C Fegan, J Blundell, J G Gribben, D Phillips, P Hillmen
ADMIRE was a multi-center, randomized-controlled, open, phase IIB superiority trial in previously untreated Chronic Lymphocytic Leukemia (CLL). Conventional frontline therapy in fit patients is fludarabine, cyclophosphamide and rituximab (FCR). Initial evidence from non-randomized Phase II trials suggested that the addition of mitoxantrone to FCR (FCM-R) improved remission rates. 215 patients were recruited to assess the primary endpoint of complete remission (CR) rates according to IWCLL criteria. Secondary endpoints were progression-free survival (PFS), overall survival (OS), overall response rate, minimal residual disease (MRD) negativity and safety...
February 20, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28212806/clonal-evolution-as-detected-by-interphase-fluorescence-in-situ-hybridization-is-associated-with-worse-overall-survival-in-a-population-based-analysis-of-patients-with-chronic-lymphocytic-leukemia-in-british-columbia-canada
#8
Steven J Huang, Krystal Bergin, Adam C Smith, Alina S Gerrie, Helene Bruyere, Chinmay B Dalal, Daniele K Sugioka, Monica Hrynchak, Khaled M Ramadan, Aly Karsan, Tanya L Gillan, Cynthia L Toze
This study evaluates prognostic markers as predictors of clonal evolution (CE) and assesses the impact of CE on overall survival (OS) in a population-based cohort of 159 consecutive eligible patients with chronic lymphocytic leukemia (CLL) obtained from the British Columbia Provincial CLL Database. CE was detected by interphase fluorescence in situ hybridization (FISH) in 34/159 patients (21%) with 65% of CE patients acquiring deletion 17p or 11q. CD38 positive status (≥30%) on flow cytometry predicted 2...
January 2017: Cancer Genetics
https://www.readbyqxmd.com/read/28212557/using-high-sensitivity-sequencing-for-the-detection-of-mutations-in-btk-and-plc%C3%AE-2-genes-in-cellular-and-cell-free-dna-and-correlation-with-progression-in-patients-treated-with-btk-inhibitors
#9
Adam Albitar, Wanlong Ma, Ivan DeDios, Jeffrey Estella, Inhye Ahn, Mohammed Farooqui, Adrian Wiestner, Maher Albitar
Patients with chronic lymphocytic leukemia (CLL) that develop resistance to Bruton tyrosine kinase (BTK) inhibitors are typically positive for mutations in BTK or phospholipase c gamma 2 (PLCγ2). We developed a high sensitivity (HS) assay utilizing wild-type blocking polymerase chain reaction achieved via bridged and locked nucleic acids. We used this high sensitivity assay in combination with Sanger sequencing and next generation sequencing (NGS) and tested cellular DNA and cell-free DNA (cfDNA) from patients with CLL treated with the BTK inhibitor, ibrutinib...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212359/considerations-in-the-frontline-treatment-of-chronic-lymphocytic-leukemia
#10
Susan M O'Brien
No abstract text is available yet for this article.
December 2016: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28203581/long-term-response-and-possible-cure-of-patients-with-b-cell-malignancies-with-dose-escalated-rituximab
#11
Lauren M Jacobs, Peter H Wiernik, Janice P Dutcher, Pablo Muxi
Rituximab (R), a chimeric monoclonal antibody targeting CD20 antigen on B-cells, has become a standard of care in the treatment of B-cell malignancies, most often in conjunction with cytotoxic chemotherapy. Activity has been demonstrated in many subtypes of B-cell lymphoma, including diffuse large cell lymphoma, follicular lymphoma (FL), mantle cell lymphoma (MCL), chronic lymphocytic leukemia (CLL), lymphocyte-predominant Hodgkin lymphoma, and Waldenström macroglobulinemia (WM). Additionally, dose escalation of R as a single agent has demonstrated improved activity in previously treated/poor prognosis CLL...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28203174/richter-s-syndrome-with-hypercalcemia-induced-by-tumor-associated-production-of-parathyroid-hormone-related-peptide
#12
Naoki Watanabe, Hajime Yasuda, Soji Morishita, Yasuo Aota, Junichi Tomomatsu, Masaru Tanaka, Akimichi Ohsaka, Norio Komatsu
Humoral hypercalcemia due to parathyroid hormone-related peptide (PTHrP) elevation is a well-known complication of various malignancies, but the situation is rare concerning hematological malignancies except for adult T-cell leukemia/lymphoma. We report a case of Richter's syndrome with humoral hypercalcemia, and demonstrate by reverse transcription polymerase chain reaction (RT-PCR) that peripheral blood PTHrP levels were 2,500-fold higher compared to healthy controls. PTHrP production by tumor cells in chronic lymphocytic leukemia (CLL) and Richter's syndrome has been previously demonstrated by nonquantitative methods such as immunohistochemistry and northern blot analysis, but this is the first report using the RT-PCR method...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28203169/recurrent-malignant-melanoma-presenting-as-isolated-pleural-metastases-in-a-patient-with-chronic-lymphocytic-leukemia
#13
Kartik Anand, Shashank Cingam, Prakash Peddi
Isolated pleural metastasis with pleural effusion is a rare occurrence in malignant melanoma. We report an unusual case of a patient with chronic lymphocytic leukemia (CLL) and recurrent pleural effusions. The pleural fluid cytology and immunohistochemistry profile were consistent with the diagnosis of CLL. However, chemotherapy with pentostatin, cyclophosphamide, and rituximab did not result in any meaningful clinical response. A video-assisted thoracoscopic surgery and biopsy of the affected nodular parietal layer of the pleura were consistent with malignant melanoma...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28197963/a-concise-review-of-autoimmune-cytopenias-in-chronic-lymphocytic-leukemia
#14
REVIEW
Mazie Tsang, Sameer A Parikh
Chronic lymphocytic leukemia (CLL) is frequently associated with autoimmune complications such as autoimmune hemolytic anemia, immune thrombocytopenia, pure red cell aplasia, and autoimmune granulocytopenia. It is critical to diagnose cytopenias from these secondary complications of CLL accurately, since prognosis and therapy are substantially different from patients who have cytopenias due to extensive bone marrow infiltration by CLL. The pathogenesis of autoimmune cytopenias in CLL is complex; and it involves antigen presentation by CLL cells to polyclonal B cells resulting in production of autoantibody, and alteration of the T cell milieu tilting the balance in favor of an autoimmune response...
February 14, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28195098/biclonal-chronic-lymphocytic-leukemia-a-study-of-two-cases-and-review-of-literature
#15
Kiran Ashok Ghodke, Nikhil V Patkar, P G Subramanian, Sumeet Gujral, Pratibha Aamre Kadam, Prashant R Tembhare
Chronic lymphocytic leukemia (CLL) is a common, immunophenotypically well-defined mature B-cell neoplasm. Demonstration of more than 5000/μL CD5+ B-cell population with co-expression of CD23, weak expression of CD20, and one type of immunoglobin light chain (either kappa or lambda) is necessary for the diagnosis of CLL. However, CLL with two populations of B-cells expressing both kappa as well as lambda (biclonal) light chains are extremely rare and has not been reported from India. We report two cases of biclonal CLL presented with leukocytosis, typical morphological features, and distinct immunophenotype of CLL...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28195089/immunogenetics-of-chronic-lymphocytic-leukemia
#16
Nikhil Patkar, Nikhil Rabade, Pratibha Amare Kadam, Falguni Mishra, Aditi Muranjan, Prashant Tembhare, Shruti Chaudhary, Swapnali Joshi, Hasmukh Jain, Uma Dangi, Bhausaheb Bagal, Navin Khattry, Hari Menon, Sumeet Gujral, Manju Sengar, P G Subramanian
INTRODUCTION: Cytogenetic aberrations as well as presence of IGVH mutations are the underlying reason for clinical heterogeneity in Chronic Lymphocytic Leukemia (CLL). The presence of IGVH mutations as well as the predominant gene usage shows geographical variations. However, there is no study from India addressing immunogenetics of CLL. In a first Indian study we document the immunogenetics of CLL in a large tertiary hospital. METHODS: We analyzed IGVH mutation status, VH gene usage, cytogenetic abnormalities using FISH, immunophenotyping data and correlated them with standard clinical variables in 84 patients of CLL...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28192408/macrophages-confer-survival-signals-via-ccr1-dependent-translational-mcl-1-induction-in-chronic-lymphocytic-leukemia
#17
M H A van Attekum, S Terpstra, E Slinger, M von Lindern, P D Moerland, A Jongejan, A P Kater, E Eldering
Protective interactions with bystander cells in micro-environmental niches, such as lymph nodes (LNs), contribute to survival and therapy resistance of chronic lymphocytic leukemia (CLL) cells. This is caused by a shift in expression of B-cell lymphoma 2 (BCL-2) family members. Pro-survival proteins B-cell lymphoma-extra large (BCL-XL), BCL-2-related protein A1 (BFL-1) and myeloid leukemia cell differentiation protein 1 (MCL-1) are upregulated by LN-residing T cells through CD40L interaction, presumably via nuclear factor (NF)-κB signaling...
February 13, 2017: Oncogene
https://www.readbyqxmd.com/read/28192303/the-manifestation-of-optical-centers-in-uv-vis-absorption-and-luminescence-spectra-of-white-blood-human-cells
#18
Yu G Terent'yeva, V M Yashchuk, L A Zaika, O M Snitserova, M Yu Losytsky
A white blood human cells spectral investigation is presented. The aim of this series of experiments was to obtain and analyze the absorption and luminescence (fluorescence and phosphorescence) spectra at room temperature and at 78 K of newly isolated white blood human cells and their organelles. As a result the optical centers and possible biochemical components that form the studied spectra where identified. Also the differences between the spectra of abnormal cells (B-cell chronic lymphocytic leukemia BCLL) and normal ones were studied for the whole cells and individual organelles...
December 7, 2016: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/28191372/richter-transformation-of-chronic-lymphocytic-leukemia-a-review-of-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-and-molecular-diagnostics
#19
REVIEW
Faiq Shaikh, Amna Janjua, Frederick Van Gestel, Adeel Ahmad
Chronic lymphocytic leukemia (CLL) is a low-grade B-cell proliferative disease with a generally indolent course. In a few cases, it undergoes transformation and becomes a more aggressive malignancy, such as diffuse large B-cell lymphoma (DLBCL). This process, which is called Richter transformation (RT), is often detected too late and is associated with a poor prognosis. There are multiple molecular diagnostic approaches to detect RT in preexisting CLL. Metabolic imaging using 18-fluorine fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET/CT) can be a very useful tool for early detection of RT and which can hence allow for timely intervention, thereby improving the patient's chances of survival...
January 9, 2017: Curēus
https://www.readbyqxmd.com/read/28187524/phenotypic-characterization-of-trisomy-12-monoclonal-b-cell-lymphocytosis
#20
Marc Sorigue, Clara Maluquer, Jordi Junca
BACKGROUND: Trisomy 12 chronic lymphocytic leukemia (CLL) is phenotypically different from the rest of CLL cytogenetic subgroups. However, it is unknown whether this is also the case for trisomy 12 CLL-phenotype monoclonal B-cell lymphocytosis (MBL). METHODS: We analyzed the expression of several markers in a series of 89 cytogenetically characterized MBL (including 17 trisomy 12 cases). Additionally, we compared the expression of these markers between trisomy 12 MBL, trisomy 12 CLL and a series of cases with trisomy 12 but fulfilling only 3 of the 5 Moreau CLL diagnostic criteria...
February 10, 2017: Cytometry. Part B, Clinical Cytometry
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