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https://www.readbyqxmd.com/read/28724540/targeting-bcl-2-in-b-cell-lymphomas
#1
Matthew S Davids
The B-cell leukemia/lymphoma-2 (BCL-2) family of proteins governs the intrinsic pathway of mitochondrial apoptosis. Dysregulation of BCL-2 has long been known to be a crucial part of the pathophysiology of B-cell lymphomas, yet several early attempts to target this pathway therapeutically were unsuccessful due to toxicity, lack of efficacy, or both. Recently, a highly potent and selective oral BCL-2 antagonist, venetoclax, was approved in chronic lymphocytic leukemia (CLL), where it has proven to be highly active, even in patients with high risk del(17p) disease...
July 19, 2017: Blood
https://www.readbyqxmd.com/read/28722013/stability-of-iron-bearing-carbonates-in-the-deep-earth-s-interior
#2
Valerio Cerantola, Elena Bykova, Ilya Kupenko, Marco Merlini, Leyla Ismailova, Catherine McCammon, Maxim Bykov, Alexandr I Chumakov, Sylvain Petitgirard, Innokenty Kantor, Volodymyr Svitlyk, Jeroen Jacobs, Michael Hanfland, Mohamed Mezouar, Clemens Prescher, Rudolf Rüffer, Vitali B Prakapenka, Leonid Dubrovinsky
The presence of carbonates in inclusions in diamonds coming from depths exceeding 670 km are obvious evidence that carbonates exist in the Earth's lower mantle. However, their range of stability, crystal structures and the thermodynamic conditions of the decarbonation processes remain poorly constrained. Here we investigate the behaviour of pure iron carbonate at pressures over 100 GPa and temperatures over 2,500 K using single-crystal X-ray diffraction and Mössbauer spectroscopy in laser-heated diamond anvil cells...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28720472/mantle-cell-lymphoma-involving-the-esophagus-evaluated-by-magnifying-endoscopy-with-narrow-band-imaging
#3
Haruka Toyonaga, Masashi Fukushima, Tetsuro Inokuma, Yukihiro Imai
No abstract text is available yet for this article.
July 15, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28719902/serum-hyaluronic-acid-levels-are-altered-in-acute-leukemia-patients-potential-prognostic-implications
#4
Eleni Anagnostopoulou, Chrysanthi Papanastasopoulou, Maria Papastamataki, Antonia Kotsiou, Zoi Topouzoglou, Nikolaos Anagnostopoulos, Nikolaos Sitaras
BACKGROUND: Studies on the serum concentration of hyaluronic acid (HA) in newly diagnosed patients with acute myeloid leukemia (AML), B-acute lymphoblastic leukemia (B-ALL), and mantle-cell lymphoma (MCL) are scarce. In this study, we focused on investigating whether HA could serve as a possible prognostic marker in patients with AML, B-ALL, and MCL. METHODS: The serum concentration of HA was measured in a total of 51 patients with newly diagnosed AML, B-ALL, and MCL...
July 19, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28714377/ibrutinib-associated-tumor-lysis-syndrome-in-chronic-lymphocytic-leukemia-small-lymphocytic-lymphoma-and-mantle-cell-lymphoma-a-case-series-and-review-of-the-literature
#5
Krystal S Titus-Rains, Jamie N Brown, Julia M Hammond
Background Tumor lysis syndrome results when intracellular contents are released during cell lysis. Ibrutinib, a Bruton tyrosine kinase inhibitor, is used for the treatment of chronic lymphocytic leukemia, small lymphocytic lymphoma, Waldenström's macroglobulinemia, mantle cell lymphoma, and marginal zone lymphoma. Tumor lysis syndrome caused by ibrutinib therapy is potentially life threatening, but is rare and not often reported in clinical trials. Objective The purpose of this case series is to describe the occurrence of tumor lysis syndrome in two patients initiated on ibrutinib, and to highlight the importance of close monitoring during therapy...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28713070/the-role-of-cd200-and-cd43-expression-in-differential-diagnosis-between-chronic-lymphocytic-leukemia-and-mantle-cell-lymphoma
#6
Mesude Falay, Berna Afacan Öztürk, Kürşad Güneş, Yasin Kalpakçı, Simten Dağdaş, Funda Ceran, Gülsüm Özet
OBJECTIVE: Atypical CLL is most frequently confused with mantle cell lymphoma (MCL). Several markers may contribute to the diagnosis of CLL. However, there is no consensus on which markers are needed to be used in the flowcytometry for the diagnosis of CLL. The aim of the present study was to investigate the role of CD43 and CD200 markers in the differential diagnosis between CLL and MCL. MATERIALS AND METHODS: To address this issue, 339 consecutive patients with CLL and MCL evaluation of CD43, and CD200 expressions were included in the flowcytometry LPD panel but not in the Matutes scoring system...
July 17, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28710480/brain-regionalization-genes-are-co-opted-into-shell-field-patterning-in-mollusca
#7
Tim Wollesen, Maik Scherholz, Sonia Victoria Rodríguez Monje, Emanuel Redl, Christiane Todt, Andreas Wanninger
The 'brain regionalization genes' Six3/6, Otx, Pax2/5/8, Gbx, and Hox1 are expressed in a similar fashion in the deuterostome, ecdysozoan, and the cephalopod brain, questioning whether this holds also true for the remaining Mollusca. We investigated developmental Gbx-expression in representatives of both molluscan sister groups, the Aculifera and Conchifera. Gbx is expressed in the posterior central nervous system of an aculiferan polyplacophoran and solenogaster but not in a conchiferan bivalve suggesting that Gbx, together with Six3/6, Otx, Pax2/5/8, and Hox1, is involved in central nervous system regionalization as reported for other bilaterians...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28710371/lattice-thermal-conductivity-of-mgsio3-perovskite-from-first-principles
#8
Nahid Ghaderi, Dong-Bo Zhang, Huai Zhang, Jiawei Xian, Renata M Wentzcovitch, Tao Sun
We investigate lattice thermal conductivity κ of MgSiO3 perovskite (pv) by ab initio lattice dynamics calculations combined with exact solution of linearized phonon Boltzmann equation. At room temperature, κ of pristine MgSiO3 pv is found to be 10.7 W/(m · K) at 0 GPa. It increases linearly with pressure and reaches 59.2 W/(m · K) at 100 GPa. These values are close to multi-anvil press measurements whereas about twice as large as those from diamond anvil cell experiments. The increase of k with pressure is attributed to the squeeze of weighted phase-spaces phonons get emitted or absorbed...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705174/extensive-colorectal-lymphomatous-polyposis-complicated-by-acute-intestinal-obstruction-a-case-report
#9
Jaques Waisberg, Amanda do Val Anderi, Pedro Augusto Soffner Cardoso, José Henrique Miranda Borducchi, Demetrius Eduardo Germini, Maria Isete Fares Franco, Cidia Vasconcellos
BACKGROUND: Multiple lymphomatous polyposis is a rare type of gastrointestinal lymphoma that extensively infiltrates the intestine. Multiple lymphomatous polyposis originates from the mantle zone of the lymphoma follicle and is considered to be a mantle cell lymphoma, which is a relatively aggressive type of B-cell non-Hodgkin's lymphoma. We report an unusual case of a patient with multiple lymphomatous polyposis with extensive colorectal involvement and acute intestinal obstruction, an atypical complication of this rare disease...
July 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28704757/structural-optimization-elaborates-novel-potent-akt-inhibitors-with-promising-anticancer-activity
#10
Yang Liu, Yanzhen Yin, Zhen Zhang, Carrie J Li, Hui Zhang, Daoguang Zhang, Changying Jiang, Krystle Nomie, Liang Zhang, Michael L Wang, Guisen Zhao
Targeting of Akt has been validated as a well rationalized approach to cancer treatment, and represents a promising therapeutic strategy for aggressive hematologic malignancies. We describe herein an exploration of novel Akt inhibitors for cancer therapy through structural optimization of previously described 4-(piperazin-1-yl)-7H-pyrrolo[2,3-d]pyrimidine derivatives. Our studies yielded a novel series of pyrrolopyrimidine based phenylpiperidine carboxamides capable of potent inhibition of Akt1. Notably, 10h exhibited robust antiproliferative effects in both mantle cell lymphoma cell lines and primary patient tumor cells...
June 30, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28703283/wnt-signaling-pathways-in-chronic-lymphocytic-leukemia-and-b-cell-lymphomas
#11
REVIEW
Pavlína Janovská, Vítězslav Bryja
In this review, we discuss the intricate roles of the WNT signaling network in the development and progression of mature B cell-derived hematological malignancies, with a focus on chronic lymphocytic leukemia (CLL) and related B cell lymphomas. We review the current literature and highlight the differences between the β-catenin-dependent and independent branches of WNT signaling. Special attention is paid to the role of the non-canonical WNT/Planar cell polarity (PCP) pathway, mediated by the WNT5-ROR1-Dishevelled (DVL) signaling axis in CLL...
July 12, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28699667/mantle-cell-lymphoma-2017-update-on-diagnosis-risk-stratification-and-clinical-management
#12
Julie M Vose
DISEASE OVERVIEW: Mantle cell lymphoma (MCL) is a non-Hodgkin lymphoma characterized by involvement of the lymph nodes, spleen, blood and bone marrow with a short remission duration to standard therapies and a median overall survival (OS) of 4-5 years. DIAGNOSIS: Diagnosis is based on lymph node, bone marrow, or tissue morphology of centrocytic lymphocytes, small cell type, or blastoid variant cells. A chromosomal translocation t (11:14) is the molecular hallmark of MCL, resulting in the overexpression of cyclin D1...
August 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28699256/long-term-analysis-of-phase-ii-studies-of-single-agent-lenalidomide-in-relapsed-refractory-mantle-cell-lymphoma
#13
Thomas E Witzig, Pier Luigi Zinzani, Thomas M Habermann, Joseph M Tuscano, Johannes Drach, Radhakrishnan Ramchandren, Sevgi Kalayoglu Besisik, Kenichi Takeshita, Marie-Laure Casadebaig Bravo, Lei Zhang, Tommy Fu, Andre Goy
Mantle cell lymphoma (MCL) is a type of non-Hodgkin lymphoma (NHL) with aggressive disease characteristics resulting in multiple relapses after initial treatment. Lenalidomide is an immunomodulatory agent approved in the US for patients with relapsed/refractory MCL following bortezomib based on results from 3 multicenter phase II studies (2 including relapsed/refractory aggressive NHL and 1 focusing on MCL post-bortezomib). The purpose of this report is to provide longer follow-up on the MCL-001 study (follow-ups were 6...
July 11, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28685308/pseudo-autologous-stem-cell-transplantation-for-donor-derived-mantle-cell-lymphoma-12%C3%A2-years-after-allogeneic-transplantation
#14
Masaharu Tamaki, Hidenori Wada, Ayumi Gomyo, Jin Hayakawa, Yu Akahoshi, Naonori Harada, Machiko Kusuda, Yuko Ishihara, Koji Kawamura, Aki Tanihara, Miki Sato, Kiriko Terasako-Saito, Kazuaki Kameda, Misato Kikuchi, Shun-Ichi Kimura, Hideki Nakasone, Shinichi Kako, Yoshinobu Kanda
Donor-derived malignancy is a rare morbidity after allogeneic hematopoietic stem cell transplantation (HSCT), in which most previous cases have presented as acute leukemia or myelodysplastic syndrome. There have, however, been very few reports of donor-derived lymphoma. Here, we present a case of donor-derived mantle cell lymphoma 12 years after allogeneic HSCT, which was successfully treated with chemotherapy followed by pseudo-autologous HSCT (pASCT), i.e., an autologous HSC transplant following allogeneic HSCT in which the infused stem cell is considered to be derived from the donor cells...
July 6, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28676933/association-of-nr1i2-cyp3a5-and-abcb1-genetic-polymorphisms-with-variability-of-temsirolimus-pharmacokinetics-and-toxicity-in-patients-with-metastatic-bladder-cancer
#15
Litaty C Mbatchi, Matthieu Gassiot, Philippe Pourquier, Alejando Goberna, Hakim Mahammedi, Loic Mourey, Florence Joly, Serge Lumbroso, Alexandre Evrard, Nadine Houede
PURPOSE: Temsirolimus is a mammalian target of rapamycin (mTOR) inhibitor that exhibits antitumor activity in renal cell carcinoma and mantle cell lymphoma. The metabolism of temsirolimus and its active metabolite sirolimus mainly depends on cytochrome P450 3A4/5 (CYP3A4/A5) and the ABCB1 transporter. Differently from sirolimus, no pharmacogenetic study on temsirolimus has been conducted. Therefore, the aim of this pilot study was to identify genetic determinants of the inter-individual variability in temsirolimus pharmacokinetics and toxicity...
July 4, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28670079/mantle-cell-lymphoma-of-the-prostate-gland-treated-with-holmium-laser-enucleation
#16
Preston A Milburn, Christian T Cable, Sean Trevathan, Marawan M El Tayeb
Mantle cell lymphoma of the prostate is rare and is seldom encountered in general urologic practice. It either arises primarily from the prostate or is a result of metastatic spread from another site. This specific type of lymphoma has an aggressive course and may respond poorly to traditional chemotherapy with frequent relapses. Mantle cell lymphoma occurs in middle age or older, which is also when symptoms of benign prostatic enlargement begin in men. This overlap makes the diagnosis of lymphoma of the prostate difficult and makes the treatment more complex...
July 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28667243/biomineralization-related-specialization-of-hemocytes-and-mantle-tissues-of-the-pacific-oysters-crassostrea-gigas
#17
Anna V Ivanina, Halina I Falfushynska, Elia Beniash, Helen Piontkivska, Inna M Sokolova
Molluscan exoskeleton (shell) plays multiple important roles including structural support, protection from predators and stressors, and physiological homeostasis. Shell formation is a tightly regulated biological process that allows mollusks to build their shells even in environments unfavorable for mineral precipitation. Outer mantle edge epithelial cells (OME) and hemocytes were implicated in this process; however, the exact functions of these cell types in biomineralization are not clear. The Pacific oysters Crassostrea gigas were used to study differences in the expression profiles of selected biomineralization-related genes in hemocytes and mantle cells, and the functional characteristics of hemocytes such as adhesion, motility and phagocytosis...
June 30, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28664939/clinical-utility-of-recently-identified-diagnostic-prognostic-and-predictive-molecular-biomarkers-in-mature-b-cell-neoplasms
#18
REVIEW
Arantza Onaindia, L Jeffrey Medeiros, Keyur P Patel
Genomic profiling studies have provided new insights into the pathogenesis of mature B-cell neoplasms and have identified markers with prognostic impact. Recurrent mutations in tumor-suppressor genes (TP53, BIRC3, ATM), and common signaling pathways, such as the B-cell receptor (CD79A, CD79B, CARD11, TCF3, ID3), Toll-like receptor (MYD88), NOTCH (NOTCH1/2), nuclear factor-κB, and mitogen activated kinase signaling, have been identified in B-cell neoplasms. Chronic lymphocytic leukemia/small lymphocytic lymphoma, diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, Burkitt lymphoma, Waldenström macroglobulinemia, hairy cell leukemia, and marginal zone lymphomas of splenic, nodal, and extranodal types represent examples of B-cell neoplasms in which novel molecular biomarkers have been discovered in recent years...
June 30, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28664604/urinary-tract-involvement-of-mantle-cell-lymphoma-diagnosed-by-urine-cytology
#19
Diane Hamele-Bena, Abel Arnoldo Gonzalez
Urinary tract lymphoma is unusual, with the kidney being the most commonly reported site of involvement. Urinary bladder involvement by lymphoma is rare. Mantle cell lymphoma (MCL) is a relatively uncommon type of lymphoma. Herein, we report a case of MCL of the urinary bladder diagnosed by urine cytology, with confirmatory immunocytochemical stains, which has not previously been reported in the literature.
June 30, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28663582/bet-protein-proteolysis-targeting-chimera-protac-exerts-potent-lethal-activity-against-mantle-cell-lymphoma-cells
#20
B Sun, W Fiskus, Y Qian, K Rajapakshe, K Raina, K G Coleman, A P Crew, A Shen, D T Saenz, C P Mill, A J Nowak, N Jain, L Zhang, M Wang, J D Khoury, C Coarfa, C M Crews, K N Bhalla
Bromodomain extraterminal protein (BETP) inhibitors transcriptionally repress oncoproteins and NFkB target genes, which undermines the growth and survival of MCL cells. However, BETi treatment causes accumulation of BETPs, associated with reversible binding and incomplete inhibition of BRD4, which potentially compromises the activity of BETi in MCL cells. Unlike BETi, BET-PROTACs (proteolysis-targeting chimera) ARV-825 and ARV-771 (Arvinas, Inc.) recruit and utilize an E3-ubiquitin ligase to effectively degrade BETPs in MCL cells...
June 30, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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