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https://www.readbyqxmd.com/read/28454248/primary-bone-mantle-cell-lymphomas-with-multiple-vertebral-compression-fractures-a-case-report
#1
Peng Yang, Jun Lin, Hao Liu, Hao Shen, Hui-Lin Yang
Mantle cell lymphoma (MCL) is a mature B-cell non-Hodgkin lymphoma. Patients with MCL generally present with extensive lymphadenopathy and extranodal involvement. To the best of our knowledge, no cases of primary bone MCL with multiple vertebral compression fractures have been reported in the literature thus far. The current study reports the case of a 75-year-old Chinese male patient presenting with lower back pain for 1 year. B symptoms were not observed in the patient's medical history. X-ray revealed osteoporosis, and mixed osteolytic and osteosclerotic lesions in the T10 and L1 vertebrae with decreased height...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28447716/par1%C3%A2-mediated-c%C3%A2-jun-activation-promotes-heat-stress%C3%A2-induced-early-stage-apoptosis-of-human-umbilical-vein-endothelial-cells
#2
Shuang Zhang, Yanan Liu, Zhenglian Wang, Jingxian Liu, Zhengtao Gu, Qiulin Xu, Lei Su
Our previous study indicated that when human umbilical vein endothelial cells (HUVECs), which are involved in endothelial barrier function, are heat stressed, levels of protease‑activated receptor 1 (PAR1) are increased significantly. In the present study, it was demonstrated that PAR1 serves a vital role in heat stress‑induced HUVEC apoptosis. When the PAR1 inhibitor, SCH79797 (SCH), or a small interfering RNA (siRNA) targeting PAR1 were used to inhibit PAR1 signaling, a marked decrease in cell apoptosis, caspase‑3 activity and the expression of the pro‑apoptotic protein B‑cell lymphoma 2 (Bcl‑2) associated X (Bax), as well as increased expression of the anti‑apoptotic Bcl‑2 family member, myeloid cell leukemia 1 (Mcl‑1), were observed...
March 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447141/the-iliotibial-band-and-anterolateral-capsule-have-a-combined-attachment-to-the-segond-fracture
#3
Marcio Albers, Humza Shaikh, Elmar Herbst, Kentaro Onishi, Kanto Nagai, Volker Musahl, Freddie H Fu
The purpose of this report was to describe the injury mechanism, surgical findings, and outcomes in a 21-year-old professional female football player who presented with a complete anterior cruciate ligament (ACL) rupture and Segond fracture. Interview and video analysis were performed to elicit the injury mechanism. Clinical examination and imaging revealed a complete ACL tear, Segond fracture, lateral meniscus tear, MCL sprain, and posterolateral corner sprain. Examination under anaesthesia revealed Grade 2 pivot shift and varus/valgus instability...
April 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28446242/activity-of-distinct-growth-factor-receptor-network-components-in-breast-tumors-uncovers-two-biologically-relevant-subtypes
#4
Mumtahena Rahman, Shelley M MacNeil, David F Jenkins, Gajendra Shrestha, Sydney R Wyatt, Jasmine A McQuerry, Stephen R Piccolo, Laura M Heiser, Joe W Gray, W Evan Johnson, Andrea H Bild
BACKGROUND: The growth factor receptor network (GFRN) plays a significant role in driving key oncogenic processes. However, assessment of global GFRN activity is challenging due to complex crosstalk among GFRN components, or pathways, and the inability to study complex signaling networks in patient tumors. Here, pathway-specific genomic signatures were used to interrogate GFRN activity in breast tumors and the consequent phenotypic impact of GRFN activity patterns. METHODS: Novel pathway signatures were generated in human primary mammary epithelial cells by overexpressing key genes from GFRN pathways (HER2, IGF1R, AKT1, EGFR, KRAS (G12V), RAF1, BAD)...
April 26, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28445976/oxidative-stress-induced-apoptosis-in-granulosa-cells-involves-jnk-p53-and-puma
#5
Hongyan Yang, Yan Xie, Dongyu Yang, Decheng Ren
Reactive oxygen species (ROS) play important roles in follicular development and survival. Granulosa cell death is associated with increased ROS, but the mechanism of granulosa cell death induced by ROS is not clear. In order to define the molecular link between ROS and granulosa cell death, COV434, human granulosa tumor cells, were treated with H2O2. Compared to control cells, H2O2 induced granulosa cell death in a dose- and time-dependent manner. H2O2 induced an increase in Bax, Bak and Puma, and a decrease in anti-apoptotic molecules such as Bcl-2, Bcl-xL and Mcl-1...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28441715/targeting-the-bcl-2-family-and-p-glycoprotein-reverses-paclitaxel-resistance-in-human-esophageal-carcinoma-cell-line
#6
Xiaoli Shi, Yinhui Dou, Kairui Zhou, Jinling Huo, Tengjiao Yang, Tiantian Qin, Weihua Liu, Saiqi Wang, Dongxiao Yang, Liming Chang, Cong Wang
Paclitaxel (PTX) is one of the most effective drugs used in the treatment of esophageal cancer, however, paclitaxel resistance represents a key limitation during the treatment process. In this study, we investigated the changes of Bcl-2 family members in the moderate paclitaxel-resistance of esophageal carcinoma EC109/PTX cells both in vitro and in vivo. Moreover, we evaluated the reversal effect using siRNAs and the recombinant inhibitor TW37 targeting Bcl-2, Bcl-XL and Mcl-1. Our findings show that downregulation of Bcl-2, Bcl-XL and Mcl-1 can significantly promote EC109/PTX cell apoptosis and reduce the EC109/PTX cell resistance index (RI)...
April 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28441582/synthesis-and-antiproteasomal-activity-of-novel-o-benzyl-salicylamide-based-inhibitors-built-from-leucine-and-phenylalanine
#7
Radek Jorda, Jan Dušek, Eva Řezníčková, Karel Pauk, Pratibha P Magar, Aleš Imramovský, Vladimír Kryštof
Inhibition of protein degradation is one of strategies for suppression of uncontrolled proliferation of cancer cells. Proteolytic degradation in cells is mainly ensured by proteasome and its inhibition by bortezomib showed benefit in clinical use for the treatment of multiple myeloma. We report here the library of antiproteasomal O-benzyl salicylamides built from leucine and phenylalanine. Prepared compounds displayed antiproliferative activity on K562, CEM and U266 cancer cell lines, ranging from high micromolar to submicromolar GI50 values...
April 15, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28440486/synergistic-antitumor-effects-of-cdk-inhibitor-sns%C3%A2-032-and-an-oncolytic-adenovirus-co%C3%A2-expressing-trail-and-smac-in-pancreatic-cancer
#8
Yun Ge, Wen Lei, Yingyu Ma, Yigang Wang, Buyun Wei, Xiaoyi Chen, Guoqing Ru, Xianglei He, Xiaozhou Mou, Shibing Wang
Gene therapy using oncolytic adenoviruses is a novel approach for human cancer therapeutics. The current study aimed to investigate whether the combined use of an adenovirus expressing tumor necrosis factor‑related apoptosis‑inducing ligand (TRAIL) and second mitochondria‑derived activator of caspase (Smac) upon caspase activation (ZD55‑TRAIL‑IETD‑Smac) and cyclin‑dependent kinase (CDK) inhibitor SNS‑032 will synergistically reinforce their anti‑pancreatic cancer activities. The experiments in vitro demonstrated that SNS‑032 enhances ZD55‑TRAIL‑IETD‑Smac‑induced apoptosis and causes marked pancreatic cancer cell death...
April 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28437064/rapid-and-highly-sensitive-detection-of-dopamine-using-conjugated-oxaborole-based-polymer-and-glycopolymer-systems
#9
Keren Jiang, Yinan Wang, Garima Thakur, Yohei Kotsuchibashi, Selvaraj Naicker, Ravin Narain, Thomas Thundat
A conjugated polymer interface consisting of an oxaborole containing polymer and a glycopolymer was used for achieving very high selectivity in dopamine (DA) detection. The optimum binding affinity between the polymers promotes the selectivity to DA through a displacement mechanism while remaining unaffected by other structurally related analogs and saccharide derivatives. Real-time detection of DA with very high selectivity and sensitivity has been demonstrated by immobilizing the polymer conjugates on surface plasmon resonance (SPR) and microcantilever (MCL) sensor platforms...
April 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28436946/essential-role-for-bim-in-mediating-the-apoptotic-and-antitumor-activities-of-immunotoxins
#10
A Antignani, D Segal, N Simon, R J Kreitman, D Huang, D J FitzGerald
Protein synthesis is crucial for regulating cell homeostasis and, when unrestricted, it can lead to tumorigenesis. Immunotoxins derived from Pseudomonas exotoxin are antibody-toxin fusion proteins that inhibit protein synthesis of mammalian cells via ADP-ribosylation of the eukaryotic elongation factor-2. Here we investigate the role of the Bcl-2 family proteins in the response of cancer cells to immunotoxin challenge. Besides the well-known reduction of the prosurvival Bcl-2 family member, Mcl-1, following inhibition of protein synthesis, we show for the first time that immunotoxins also reduce the levels of selected proapoptotic BH-3-only proteins...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28435526/rita-mimics-synthesis-and-mechanistic-evaluation-of-asymmetric-linked-trithiazoles
#11
Adrian L Pietkiewicz, Yuqi Zhang, Marwa N Rahimi, Michael Stramandinoli, Matthew Teusner, Shelli R McAlpine
The established cytotoxic agent RITA contains a thiophene-furan-thiophene backbone and two terminal alcohol groups. Herein we investigate the effect of using thiazoles as the backbone in RITA-like molecules and modifying the terminal groups of these trithiazoles, thereby generating 41 unique structures. Incorporating side chains with varied steric bulk allowed us to investigate how size and a stereocenter impacted biological activity. Subjecting compounds to growth inhibition assays on HCT-116 cells showed that the most potent compounds 7d, 7e, and 7h had GI50 values of 4...
April 13, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28434928/hypercvad-chemotherapy-in-mantle-cell-lymphoma-patients-is-associated-with-higher-rates-of-hematopoietic-progenitor-cell-mobilization-failure-despite-plerixafor-rescue
#12
Amandeep Salhotra, Yuan Shan, Ni-Chun Tsai, James F Sanchez, Ibrahim Aldoss, Haris Ali, Tanya Paris, Ricardo Spielberger, Thai M Cao, Auayporn Nademanee, Stephen J Forman, Robert Chen
Induction regimens for mantle cell lymphoma (MCL) can be categorized into highly intensive ones containing cytarabine and less intense regimens such as R (rituximab) CHOP or R-bendamustine. Prior publications have shown R-hyperCVAD can be associated with stem cell mobilization failures. However, those studies did not include the use of plerixafor as rescue for stem cell mobilization failure. We examined our database of 181 consecutive MCL patients from 2005 to 2015 who received upfront therapy with either R-hyperCVAD or less intense chemotherapy (R-bendamustine and R-CHOP only) regimens to assess impact of frontline chemotherapy on collection of hematopoietic cell progenitors prior to autologous stem cell transplant (ASCT)...
April 18, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28433571/antitumor-and-chemosensitizing-action-of-3-bromopyruvate-implication-of-deregulated-metabolism
#13
Saveg Yadav, Shrish Kumar Pandey, Ajay Kumar, Praveen Kumar Kujur, Rana Pratap Singh, Sukh Mahendra Singh
3-Bromopyruvate (3-BP), brominated derivative of pyruvate, possesses strong antitumor potential, owing to its ability to inhibit multiple target molecules crucial for survival of neoplastic cells. Although, 3-BP displays cytotoxicity against a wide variety of tumors, there is no report with respect to malignancies of thymic origin. Therefore, we investigated its antineoplastic action in vitro against tumor cells of a murine transplantable lymphoma of thymoma origin, designated as Dalton's lymphoma (DL). 3-BP treatment of tumor cells inhibited metabolism and survival with augmented induction of apoptosis and necrosis...
April 19, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28432456/deregulated-bcl-2-family-proteins-impact-on-repair-of-dna-double-strand-breaks-and-are-targets-to-overcome-radioresistance-in-lung-cancer
#14
Sarah A Wieczorek, Frank Breitenbuecher, Aashish Soni, Katja Paul-Konietzko, Sophie Ziegler, Ali Sak, George Iliakis, Martin Schuler
PURPOSE: DNA damage-induced cell death is a major effector mechanism of radiotherapy. Aberrant expression of anti-apoptotic BCL-2 family proteins is frequently observed in lung cancers. Against this background, we studied radioresistance mediated by BCL-2 family proteins at the mechanistic level and its potential as target for radiochemotherapy. METHODS: Lung cancer models stably expressing BCL-xL or MCL-1 were irradiated to study cell death, clonogenic survival, and DNA repair kinetics in vitro, and growth suppression of established tumors in vivo...
April 21, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28431561/the-evaluation-of-the-role-of-medial-collateral-ligament-maintaining-knee-stability-by-a-finite-element-analysis
#15
Dong Ren, Yueju Liu, Xianchao Zhang, Zhaohui Song, Jian Lu, Pengcheng Wang
BACKGROUND: A three-dimensional finite element model (FEM) of the knee joint was established to analyze the biomechanical functions of the superficial and deep medial collateral ligaments (MCLs) of knee joints and to investigate the treatment of the knee medial collateral ligament injury. METHODS: The right knee joint of a healthy male volunteer was subjected to CT and MRI scans in the extended position. The scanned data were imported into MIMICS, Geomagic, and ANSYS software to establish a three-dimensional FEM of the human knee joint...
April 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28429312/sox11-regulates-the-pro-apoptosis-signal-pathway-and-predicts-a-favorable-prognosis-of-mantle-cell-lymphoma
#16
Wenjuan Yang, Yanying Wang, Zhen Yu, Zengjun Li, Gang An, Wei Liu, Rui Lv, Liping Ma, Shuhua Yi, Lugui Qiu
Sex-determining region Y-box 11 (SOX11) is an important diagnostic marker in mantle cell lymphoma (MCL). However, the direct oncogenic mechanisms and downstream effector pathways implicated in SOX11-driven transformation remain poorly understood. In the present study, we analyzed SOX11 expression in B-NHL, and used lentivirus-mediated RNA interference targeting SOX11 to investigate the resulting changes in cellular processes and the underlying mechanisms in MCL cell lines. We found that patients with higher SOX11 expression have superior overall survival (OS) and progression-free survival (PFS) compared to those with lower SOX11 expression...
April 20, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28428059/the-decreased-growth-performance-and-impaired-immune-function-and-structural-integrity-by-dietary-iron-deficiency-or-excess-are-associated-with-tor-nf-%C3%AE%C2%BAb-p38mapk-nrf2-and-mlck-signaling-in-head-kidney-spleen-and-skin-of-grass-carp-ctenopharyngodon-idella
#17
Yan-Lin Guo, Wei-Dan Jiang, Pei Wu, Yang Liu, Xiao-Qiu Zhou, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Lin Feng
This study was conducted to investigate the effects of dietary iron on the growth, and immune function and structural integrity in head kidney, spleen and skin as well as the underlying signaling of young grass carp (Ctenopharyngodon idella). Total 630 grass carp (242.32 ± 0.58 g) were fed diets containing graded levels of iron at 12.15 (basal diet), 35.38, 63.47, 86.43, 111.09, 136.37 mg/kg (diets 2-6 were added with ferrous fumarate) and 73.50 mg/kg (diet 7 was added with ferrous sulfate) diet for 60 days...
April 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28428041/structure-of-a-myeloid-cell-leukemia-1-mcl-1-inhibitor-bound-to-drug-site-3-of-human-serum-albumin
#18
Bin Zhao, John Sensintaffar, Zhiguo Bian, Johannes Belmar, Taekyu Lee, Edward T Olejniczak, Stephen W Fesik
Amplification of the gene encoding Myeloid cell leukemia-1 (Mcl-1) is one of the most common genetic aberrations in human cancer and is associated with high tumor grade and poor survival. Recently, we reported on the discovery of high affinity Mcl-1 inhibitors that elicit mechanism-based cell activity. These inhibitors are lipophilic and contain an acidic functionality which is a common chemical profile for compounds that bind to albumin in plasma. Indeed, these Mcl-1 inhibitors exhibited reduced in vitro cell activity in the presence of serum...
March 29, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28426036/formation-of-the-intermetalloid-cluster-agsn18-7-the-reactivity-of-coinage-metal-nhc-compounds-towards-sn9-4
#19
F S Geitner, W Klein, T F Fässler
In recent years the formation of intermetalloid clusters by reacting homoatomic tetrel cluster anions with transition metal complexes has become a promising synthetic route. Nevertheless a better understanding of the processes occurring in solution is necessary. Here we present a series of novel polyanionic coinage metal NHC Zintl clusters [NHC(Dipp)M(η(4)-Sn9)](3-) (M: Cu, Ag, Au; Dipp: diisopropylphenyl) which are obtained at low temperatures from the reaction of K4Sn9 with NHC(Dipp)MCl (M: Cu-Au) in liquid ammonia...
April 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28425914/epstein-barr-virus-ensures-b-cell-survival-by-uniquely-modulating-apoptosis-at-early-and-late-times-after-infection
#20
Alexander M Price, Joanne Dai, Quentin Bazot, Luv Patel, Pavel A Nikitin, Reza Djavadian, Peter S Winter, Cristina A Salinas, Ashley Perkins Barry, Kris C Wood, Eric C Johannsen, Anthony Letai, Martin J Allday, Micah A Luftig
Latent Epstein-Barr virus (EBV) infection is causally linked to several human cancers. EBV expresses viral oncogenes that promote cell growth and inhibit the apoptotic response to uncontrolled proliferation. The EBV oncoprotein LMP1 constitutively activates NFB and is critical for survival of EBV-immortalized B cells. However, during early infection EBV induces rapid B cell proliferation with low levels of LMP1 and little apoptosis. Therefore, we sought to define the mechanism of survival in the absence of LMP1/NFB early after infection...
April 20, 2017: ELife
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