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https://www.readbyqxmd.com/read/28087699/activation-of-c-abl-kinase-potentiates-the-anti-myeloma-drug-lenalidomide-by-promoting-dda1-recruitment-to-the-crl4-ubiquitin-ligase
#1
Shaobing Gao, Chenlu Geng, Tianyu Song, Xuanru Lin, Jiye Liu, Zhen Cai, Yong Cang
Cullin Ring Ligase 4 (CRL4), a complex of Cul4 and DDB1, regulates cell cycle, DNA damage repair, and chromatin replication by targeting a variety of substrates for ubiquitination. CRL4 is also hijacked by viral proteins or thalidomide-derived compounds to degrade host restriction factors. Here we report that the c-Abl non-receptor kinase phosphorylates DDB1 at residue Y316 to recruit a small regulatory protein DDA1, leading to increased substrate ubiquitination. Pharmacological inhibition or genetic ablation of the Abl-DDB1-DDA1 axis decreases the ubiquitination of CRL4 substrates, including IKZF1 and IKZF3 in lenalidomide-treated multiple myeloma cells...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28087665/nkg2d-promotes-b1a-cell-development-and-protection-against-bacterial-infection
#2
Maja Lenartić, Vedrana Jelenčić, Biljana Zafirova, Mateja Ožanič, Valentina Marečić, Slaven Jurković, Veronika Sexl, Marina Šantić, Felix M Wensveen, Bojan Polić
NKG2D is a potent activating receptor that is expressed on cytotoxic immune cells such as CD8 T and NK cells, where it promotes cytotoxicity after binding stress ligands on infected or transformed cells. On NK cell precursors NKG2D modulates proliferation and maturation. Previously, we observed that NKG2D deficiency affects peripheral B cell numbers. In this study, we show that NKG2D regulates B1a cell development and function. We find that mice deficient for NKG2D have a strong reduction of B1a cell numbers...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28087602/novel-application-of-3d-contrast-enhanced-cmr-to-define-fibrotic-structure-of-the-human-sinoatrial-node-in-vivo
#3
Thomas A Csepe, Jichao Zhao, Lidiya V Sul, Yufeng Wang, Brian J Hansen, Ning Li, Anthony J Ignozzi, Anna Bratasz, Kimerly A Powell, Ahmet Kilic, Peter J Mohler, Paul M L Janssen, John D Hummel, Orlando P Simonetti, Vadim V Fedorov
AIMS: The adult human sinoatrial node (SAN) has a specialized fibrotic intramural structure (35-55% fibrotic tissue) that provides mechanical and electrical protection from the surrounding atria. We hypothesize that late gadolinium-enhanced cardiovascular magnetic resonance (LGE-CMR) can be applied to define the fibrotic human SAN structure in vivo. METHODS AND RESULTS: LGE-CMR atrial scans of healthy volunteers (n olu, 23-52 y.o.) using a 3 Tesla magnetic resonance imaging system with a spatial resolution of 1...
January 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28087376/ir780-loaded-tpgs-tos-micelles-for-breast-cancer-photodynamic-therapy
#4
Cleide Pais-Silva, Duarte de Melo-Diogo, Ilídio J Correia
IR780 iodide is a near-infrared (NIR) dye with a huge potential for cancer imaging and phototherapy. However, its biomedical application is strongly impaired by its lipophilic character. Herein, amphiphilic micelles based on D-α-tocopheryl polyethylene glycol succinate (TPGS) and D-α-tocopheryl succinate (TOS), two vitamin E derivatives with intrinsic anticancer activity, are explored to load IR780. IR780-loaded micelles with suitable sizes are obtained by using specific TPGS and TOS weight feed ratios during micelles formulation and these are able to encapsulate IR780 with high efficiency...
January 10, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28087311/-the-role-of-novel-oral-anticoagulants-in-patients-undergoing-cryoballoon-ablation-for-atrial-fibrillation
#5
Giannis Baltogiannis, Gian-Battista Chierchia, Giulio Conte, Juan Sieira, Giacomo Di Giovanni, Giuseppe Ciconte, Carlo de Asmundis, Yukio Saitoh, Kristel Wauters, Ghazala Irfan, Pedro Brugada
AIM: Peri-procedural thromboembolic (TE) and hemorrhagic events are complications of major concern for patients undergoing cryoballoon (CB) ablation for atrial fibrillation (AF). While peri-procedural anticoagulation management could decrease the incidence of these complications, data on CB ablation are scarce. The role of novel oral anticoagulants (NOACs) has not been thoroughly tested in this population. METHODS: In the present study, we sought to assess acute peri-procedural complications in patients undergoing CB ablation for AF under different anticoagulation regimens; anticoagulation administration was performed according to the CHA2DS2-VASc score guidelines...
November 16, 2016: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28087238/lymphocyte-circadian-clocks-control-lymph-node-trafficking-and-adaptive-immune-responses
#6
David Druzd, Olga Matveeva, Louise Ince, Ute Harrison, Wenyan He, Christoph Schmal, Hanspeter Herzel, Anthony H Tsang, Naoto Kawakami, Alexei Leliavski, Olaf Uhl, Ling Yao, Leif Erik Sander, Chien-Sin Chen, Kerstin Kraus, Alba de Juan, Sophia Martina Hergenhan, Marc Ehlers, Berthold Koletzko, Rainer Haas, Werner Solbach, Henrik Oster, Christoph Scheiermann
Lymphocytes circulate through lymph nodes (LN) in search for antigen in what is believed to be a continuous process. Here, we show that lymphocyte migration through lymph nodes and lymph occurred in a non-continuous, circadian manner. Lymphocyte homing to lymph nodes peaked at night onset, with cells leaving the tissue during the day. This resulted in strong oscillations in lymphocyte cellularity in lymph nodes and efferent lymphatic fluid. Using lineage-specific genetic ablation of circadian clock function, we demonstrated this to be dependent on rhythmic expression of promigratory factors on lymphocytes...
January 6, 2017: Immunity
https://www.readbyqxmd.com/read/28087195/endoepicardial-ventricular-tachycardia-ablation-with-a-new-high-density-non-fluoroscopic-navigation-system
#7
Gabriel Ballesteros, Pablo Ramos, Renzo Neglia, Marcel Palacio, Diego Menéndez, Ignacio García-Bolao
No abstract text is available yet for this article.
January 10, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28081593/percutaneous-cryoablation-for-hepatocellular-carcinoma
#8
Kyoung Doo Song
Local ablation therapy is considered as a conventional treatment option for patients with early stage hepatocellular carcinoma (HCC). Although radiofrequency (RF) ablation is widely used for HCC, the use of cryoablation has been increasing as newer and safer cryoablation systems have developed. The thermodynamic mechanism of freezing and thawing used in cryoablation is the Joule-Thomson effect. Cryoablation destroys tissue via direct tissue destruction and vascular-related injury. A few recent comparative studies have shown that percutaneous cryoablation for HCCs is comparable to percutaneous RF ablation in terms of long term therapeutic outcomes and complications...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28081587/clinical-significance-and-predictive-factors-of-early-massive-recurrence-after-radiofrequency-ablation-in-patients-with-a-single-small-hepatocellular-carcinoma
#9
Ju-Yeon Cho, Moon Seok Choi, Gil Sun Lee, Won Sohn, Jemma Ahn, Dong-Hyun Sinn, Geum-Youn Gwak, Yong-Han Paik, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik
BACKGROUND/AIMS: Radiofrequency ablation (RFA) is one of the most frequently applied curative treatments in patients with a single small hepatocellular carcinoma (HCC). However, the clinical significance of and risk factors for early massive recurrence after RFA-a dreadful event limiting further curative treatment-have not been fully evaluated. METHODS: In total, 438 patients with a single HCC of size ≤3 cm who underwent percutaneous RFA as an initial treatment between 2006 and 2009 were included...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28079360/solution-processed-organic-thin-film-transistor-arrays-with-assistance-of-laser-ablation
#10
Huihuang Yang, Cihai Chen, Guocheng Zhang, Shuqiong Lan, Huipeng Chen, Tailiang Guo
A key step toward commercialization of OTFT is to manufacture large-area OTFT arrays with desired uniform device performance. In this work, solution processed organic thin film transistor (OTFT) arrays were fabricated with assistance of laser ablation. The source-drain electrodes and the whole devices were patterned by precise control of laser intensity and process path. A careful selection of laser processing parameters is key to obtain high performance OTFT arrays. Eventually, the OTFT arrays on silicon wafer and ITO glass exhibited uniform electrical characteristics with the mean mobility of 0...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28078536/new-oral-anticoagulants-compared-to-warfarin-for-perioperative-anticoagulation-in-patients-undergoing-atrial-fibrillation-catheter-ablation-a-meta-analysis-of-continuous-or-interrupted-new-oral-anticoagulants-during-ablation-compared-to-interrupted-or-continuous
#11
REVIEW
Yue Zhao, Yuan Yang, Xuejiao Tang, Xiang Yu, Lei Zhang, Hua Xiao
BACKGROUND: New oral anticoagulants (NOACs) have been shown to be comparable to warfarin in patients with non-valvular atrial fibrillation (AF). This meta-analysis was performed to evaluate the efficacy and safety of NOACs for perioperative anticoagulation of AF catheter ablation. METHODS: PubMed, Embase, the Cochrane Library, CNKI, VIP, and SinoMed were searched for articles published up to August 30, 2015. The data were calculated with RevMan 5.2 using a fixed-effects model...
January 12, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28078485/a-simple-method-for-improving-the-spatial-resolution-in-infrared-laser-ablation-mass-spectrometry-imaging
#12
Juha-Pekka Hieta, Anu Vaikkinen, Samuli Auno, Heikki Räikkönen, Markus Haapala, Gianmario Scotti, Jaakko Kopra, Petteri Piepponen, Tiina J Kauppila
In mass spectrometry imaging of tissues, the size of structures that can be distinguished is determined by the spatial resolution of the imaging technique. Here, the spatial resolution of IR laser ablation is markedly improved by increasing the distance between the laser and the focusing lens. As the distance between the laser and the lens is increased from 1 to 18 m, the ablation spot size decreases from 440 to 44 μm. This way, only the collimated center of the divergent laser beam is directed on the focusing lens, which results in better focusing of the beam...
January 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28078482/irreversible-electroporation-as-treatment-of-locally-advanced-and-as-margin-accentuation-in-borderline-resectable-pancreatic-adenocarcinoma
#13
P Marsanic, A Mellano, A Sottile, M De Simone
In recent years, many local ablation technologies based on thermal damage have been used in the treatment of locally advanced pancreatic carcinoma (LAPC) and borderline resectable pancreatic carcinoma (BLRPC). However, they are associated with major complications because of possible vascular and ductal damage. Irreversible electroporation (IRE) is a nonthermal ablation technology that seems safe near vital vascular and ductal structures. IRE could be used as exclusive treatment of LAPC (en situ to IRE) after induction chemotherapy In BLRPC, surgery is not really radical in 6% of patients (microscopic residual) and local recurrences occur in 11-42% of apparent radical resections...
January 11, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28078405/-radiosurgery-and-fractionated-stereotactic-radiotherapy-of-vestibular-schwannoma
#14
K Hamm, H-U Herold, G Surber, S Rosahl
Management of vestibular schwannoma (VS) should always be interdisciplinary and results better than the natural course. Particularly in small VS, either microsurgical resection or radiosurgery (RS) can be employed. RS is a special method (initially only possible stereotactically) for delivering high-precision radiation from many directions to the target point (the isocenter) in a single high dose. With the development of three different systems-Gamma Knife (Elekta, Stockholm, Sweden), special linear accelerators, and CyberKnife (Accuray, Sunnyvale, CA, USA)-the options were extended to 1-5 fractions for RS and multisession RS (msRS), and to up to 6 weeks of conventional fractionation as stereotactic radiotherapy (SRT)...
January 11, 2017: HNO
https://www.readbyqxmd.com/read/28078383/effects-of-triple-cryoenergy-application-on-lesion-formation-and-coronary-arteries-in-the-developing-myocardium
#15
Ulrich Krause, Filipe D Abreu da Cunha, David Backhoff, Claudius Jacobshagen, Sophia Klehs, Heike E Schneider, Thomas Paul
To improve long-term outcome after cryoablation of substrates of supraventricular tachycardia, application of two and three consecutive freeze-thaw cycles has been performed. The effect of triple freeze-thaw cycles on lesion formation within developing myocardium and coronary arteries, however, has not been studied yet. In eight piglets (mean age 15 weeks, weight 15-20 kg), 30 cryolesions (three consecutive freeze-thaw cycles) were applied to the atrial aspect of both AV valve annuli (n = 18) as well as to ventricular myocardium below the valves (n = 12)...
January 11, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28078340/biocompatible-cus-based-nanoplatforms-for-efficient-photothermal-therapy-and-chemotherapy-in-vivo
#16
Shuwen Peng, Yuanyuan He, Murat Er, Yuanzhi Sheng, Yueqing Gu, Haiyan Chen
Near-infrared (NIR) photothermal therapy (PTT) is a new approach to ablate cancer without affecting normal tissues. A pivotal concern of PPT is to develop photo-responsive agents with high biocompatibility as well as effective photothermal conversion efficiency. Copper sulfide (CuS) nanoparticles prepared are characterized by their low synthesis cost, wide NIR absorption range, good biocompatibility and favorable NIR photothermal conversion efficiency. CuS nanoparticles were then coated with mesoporous silicon dioxide (SiO2) by the Stober method, and further loaded with anticancer drug doxorubicin (DOX)...
January 12, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28078133/successful-hepatectomy-for-metastatic-squamous-cell-carcinoma-of-the-anal-canal-a-case-report
#17
Tercia Tarciane Sousa, Bruna do Nascimento Santos, Marcos Belotto, Renata D'Alpino Peixoto
Despite rare, metastatic anal carcinoma confers a poor prognosis. Systemic chemotherapy is the mainstay of treatment for advanced disease while the role of biologics and/or surgical resection of metastatic disease are anecdotal. Compared to isolated liver colorectal or neuroendocrine cancer liver metastases, there is far less experience with resection or nonsurgical local ablative procedures for patients with metastatic anal carcinoma to the liver. We report the case of a 67-year-old woman with metastatic anal carcinoma to the liver who was successfully treated with liver resection and remains free of relapse more than one year later...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28077816/incidence-of-atrial-tachyarrhythmias-in-patients-with-early-repolarization-syndrome
#18
Ki Won Hwang, Gi-Byoung Nam, Junhee Han, Yong Giun Kim, Hyung Oh Choi, Jun Kim, Kee-Joon Choi, You-Ho Kim
Atrial tachyarrhythmias (ATAs) occur in a significant proportion of Brugada syndrome (BrS) patients and are often an important cause of inappropriate shocks. The aim of this retrospective study was to evaluate the incidence of ATAs and ATA-induced inappropriate shocks in early repolarization syndrome (ERS) patients as compared to BrS patients.We analyzed data from 20 consecutive patients who were diagnosed with ERS and compared them with patients diagnosed with BrS (n = 31). Clinical and ICD interrogation data were collected and analyzed for all events with ICD shocks...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077333/molecular-cloning-characterization-and-expression-analysis-of-two-juvenile-hormone-esterase-like-carboxylesterase-cdnas-in-chinese-mitten-crab-eriocheir-sinensis
#19
Yu Xu, Muzi Zhao, Yanfei Deng, Yuanjie Yang, Xuguang Li, Quanping Lu, Jiachun Ge, Jianlin Pan, Zhiqiang Xu
Precise regulation of methyl farnesoate (MF) titer is of prime importance throughout the crustacean life-cycle. Although the synthetic pathway of MF is well-documented, little is known about its degradation and recycling in crustaceans. Juvenile hormone esterase-like (JHE-like) carboxylesterase (CXE) is a key enzyme in MF degradation, thus playing a significant role in regulating the MF titer. We identified and characterized two cDNAs, Es-CXE1 and Es-CXE2, encoding JHE-like CXEs in Chinese mitten crab. Full-length cDNAs of Es-CXE1 and Es-CXE2 encode proteins composed of 584 and 597 amino acids, respectively, both of which contain a typical carboxylesterase domain...
January 8, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28077188/point-catheter-ablation-of-macro-re-entrant-ventricular-tachycardia-in-a-patient-after-surgical-repair-for-double-outlet-right-ventricle
#20
Gaku Izumi, Hisashi Yokoshiki, Atsuhito Takeda
Catheter ablation of ventricular tachycardia is often difficult in patients after surgery for CHD. In patients with a ventricular septal defect patch, it is necessary to decide which ventricular side is appropriate for catheter ablation. In this article, we report a case of successful point catheter ablation of re-entrant ventricular tachycardia. Identification of the ventricular septal defect patch using intra-cardiac echocardiography was useful.
January 12, 2017: Cardiology in the Young
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