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https://www.readbyqxmd.com/read/29343578/a-new-quinoline-brd4-inhibitor-targets-a-distinct-latent-hiv-1-reservoir-for-re-activation-from-other-shock-drugs
#1
Erik Abner, Mateusz Stoszko, Lei Zeng, Heng-Chang Chen, Andrea Izquierdo-Bouldstridge, Tsuyoshi Konuma, Eduard Zorita, Elisa Fanunza, Qiang Zhang, Tokameh Mahmoudi, Ming-Ming Zhou, Guillaume J Filion, Albert Jordan
Upon HIV-1 infection, a reservoir of latently infected resting T cells prevents the eradication of the virus from patients. To achieve complete depletion, the existing virus-suppressing antiretroviral therapy must be combined with drugs that reactivate the dormant viruses. We previously described a novel chemical scaffold compound, MMQO (8-methoxy-6-methylquinolin-4-ol) that is able to reactivate viral transcription in several models of HIV latency including J-Lat cells through an unknown mechanism. MMQO potentiates the activity of known latency-reversing agents (LRAs) or 'shock' drugs such as PKC agonists or HDAC inhibitors...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29326848/the-knowledge-of-eye-physicians-on-local-anesthetic-toxicity-and-intravenous-lipid-treatment-questionnaire-study
#2
Aykut Urfalıoğlu, Selma Urfalıoğlu, Gözen Öksüz
Objectives: To evaluate the knowledge of ophthalmologists regarding local anesthesia toxicity syndrome (LATS) and intravenous lipid emulsion used in treatment, and to raise awareness of this issue. Materials and Methods: A questionnaire comprising 14 questions about demographics, local anesthesia (LA) use, toxicity, and treatment methods was administered to ophthalmologists at different hospitals. Results: The study included 104 ophthalmologists (25% residents, 67...
December 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29302376/clinicopathological-significance-of-large-tumor-suppressor-lats-expression-in-gastric-cancer
#3
Myoung Won Son, Geum Jong Song, Si-Hyong Jang, Soon Auck Hong, Mee-Hye Oh, Ji-Hye Lee, Moo Jun Baek, Moon Soo Lee
Purpose: The aims of this study were to evaluate the expression of the large tumor suppressor (LATS) genes LATS1 and LATS2 by immunohistochemical staining of gastric cancer, and to evaluate the clinicopathological significance of LATS expression and its correlation with overall survival (OS). Materials and Methods: LATS1 and LATS2 expression in a tissue microarray was detected by immunohistochemistry, using 264 gastric cancer specimens surgically resected between July 2006 and December 2009...
December 2017: Journal of Gastric Cancer
https://www.readbyqxmd.com/read/29295843/gpvi-signaling-is-compromised-in-newly-formed-young-platelets-after-acute-thrombocytopenia-in-mice
#4
Shuchi Gupta, Deya Cherpokova, Markus Spindler, Martina Morowski, Markus Bender, Bernhard Nieswandt
At sites of vascular injury, exposed subendothelial collagens trigger platelet activation and thrombus formation by interacting with the immunoreceptor tyrosine-based activation motif (ITAM)-coupled glycoprotein (GP) VI on the platelet surface. Platelets are derived from the cytoplasm of megakaryocytes (MKs), which extend large proplatelets into bone marrow (BM) sinusoids that are then released into the blood stream where the final platelet sizing and maturation occurs. The mechanisms that prevent activation of MKs and forming proplatelets in the collagen-rich BM environment remain largely elusive...
January 2, 2018: Blood
https://www.readbyqxmd.com/read/29285548/preclinical-evaluation-of-an-18f-trifluoroborate-methionine-derivative-for-glioma-imaging
#5
Xiangyu Yang, Zhibo Liu, Huimin Zhang, Zhu Li, Jeeva P Munasinghe, Gang Niu, Gaojun Teng, Xiaoyuan Chen
PURPOSE: 11C-methionine (MET) is one of the most commonly used amino acid tracers for PET imaging of brain tumors. In this study, we report an 18F-labeled boron-derived methionine analogue, denoted as 18F-B-MET, as a potential substitute of 11C-MET for glioma PET imaging. METHODS: 19F-B-MET was synthesized from readily available chemicals according to our previous publication. For kit development, 19F-B-MET was aliquoted in quantities of 10 nmol for on-demand one-step labeling...
December 29, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242053/automatic-activation-mapping-and-origin-identification-of-idiopathic-outflow-tract-ventricular-arrhythmias
#6
Alejandro Alcaine, David Soto-Iglesias, Juan Acosta, Viatcheslav Korshunov, Diego Penela, Mikel Martínez, Markus Linhart, David Andreu, Juan Fernández-Armenta, Pablo Laguna, Juan Pablo Martínez, Oscar Camara, Antonio Berruezo
PURPOSE: Activation mapping is used to guide ablation of idiopathic outflow tract ventricular arrhythmias (OTVAs). Isochronal activation maps help to predict the site of origin (SOO): left vs right outflow tract (OT). We evaluate an algorithm for automatic activation mapping based on the onset of the bipolar electrogram (EGM) signal for predicting the SOO and the effective ablation site in OTVAs. METHODS: Eighteen patients undergoing ablation due to idiopathic OTVAs were studied (12 with left ventricle OT origin)...
October 27, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29239982/postexercise-hypotension-and-heart-rate-variability-responses-subsequent-to-traditional-paired-set-and-superset-training-methods
#7
Gabriel A Paz, Eliseo Iglesias-Soler, Jeffrey M Willardson, Marianna de Freitas Maia, Humberto Miranda
The purpose of this study was to compare training volume, post-exercise hypotension (PEH) and heart rate variability (HRV) responses to different strength training methods. Thirteen trained men volunteered for this study. Three training methods were completed in a randomized design, which included: Traditional Set (TS) - three successive sets for the lying bench press (LBP), lat pulldown (LPD), incline 45° bench press (BP45), seated close-grip row (SCR), triceps extension (TE), and biceps curl (BC), with a 90 sec...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29227008/ice-or-fire-comparison-of-second-generation-cryoballoon-ablation-and-radiofrequency-ablation-in-patients-with-symptomatic-persistent-atrial-fibrillation-and-an-enlarged-left-atrium
#8
Ersan Akkaya, Alexander Berkowitsch, Sergej Zaltsberg, Harald Greiss, Christian W Hamm, Johannes Sperzel, Thomas Neumann, Malte Kuniss
INTRODUCTION: We aimed to compare arrhythmia recurrence rates after second-generation cryoballoon (CB-Adv) ablation and radiofrequency (RF) ablation in patients with symptomatic persistent atrial fibrillation (AF) and left atrial (LA) enlargement. METHODS AND RESULTS: Persistent AF patients with LA enlargement were compared using a propensity-score-matching algorithm, and 111 patients treated with CB-Adv ablation and 111 patients treated with RF ablation were selected...
December 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29223114/regional-conduction-velocity-calculation-from-clinical-multichannel-electrograms-in-human-atria
#9
Bhawna Verma, Tobias Oesterlein, Axel Loewe, Armin Luik, Claus Schmitt, Olaf Dössel
BACKGROUND: During atrial fibrillation, heterogeneities and anisotropies result in a chaotic propagation of the depolarization wavefront. The electrophysiological parameter called conduction velocity (CV) influences the propagation pattern over the atrium. We present a method that determines the regional CV for deformed catheter shapes, which result due to the catheter movement and changing wall contact. METHODS: The algorithm selects stable catheter positions, finds the local activation times (LAT), considers the wall contact and calculates all CV estimates within the area covered by the catheter...
November 26, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29198077/fibroblast-like-synoviocyte-migration-is-enhanced-by-il-17-mediated-overexpression-of-l-type-amino-acid-transporter-1-lat1-via-the-mtor-4e-bp1-pathway
#10
Zhao Yu, Wang Lin, Zhang Rui, Pan Jihong
In rheumatoid arthritis (RA), activated synovial fibroblasts have the ability to invade joint cartilage, actively contributing to joint destruction in RA. The mechanisms underlying this cell migration and invasion remain unclear. Our previous results and data from the GEO profile indicate that the L-type amino acid transporter gene, LAT1, is overexpressed in the synovium of RA. To identify its potential role in RA, fibroblast-like synoviocytes (FLS) from patients with RA were used to determine the effects of suppressing the LAT1 genes using RNA interference and the LAT inhibitor, BCH...
December 2, 2017: Amino Acids
https://www.readbyqxmd.com/read/29190553/sewage-sludge-as-a-soil-amendment-in-a-larix-decidua-plantation-effects-on-tree-growth-and-floristic-diversity
#11
Bourioug Mohamed, Girardclos Olivier, Gillet François, Alaoui-Sehmer Laurence, Pascale Bourgeade, Alaoui-Sossé Badr, Aleya Lotfi
Sewage sludge application in forest plantations is an interesting complementary alternative practice to sewage sludge reutilization and recycling, with a significant and sustainable net effect in climate change mitigation. However, to optimize it a detailed knowledge of its effects on ecosystem components such as plants, soil, water and fauna is needed. We investigated the effects of sewage sludge application on soil, tree growth and floristic diversity in a ten-year-old plantation of European larch (Larix decidua Mill...
November 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29183134/-b-i-in-vitro-i-transduction-and-target-mutagenesis-efficiency-of-hiv-1-i-pol-i-gene-targeting-zfn-and-crisper-cas9-delivered-by-various-plasmids-and-or-vectors-towards-an-hiv-cure-b
#12
Moses Okee, Alice Bayiyana, Carol Musubika, Moses Joloba, Fred Ashaba-Katabazi, Bernard Ssentalo Bagaya, Misaki Wayengera
Efficiency of artificial restriction enzymes (AREs) towards curing HIV has only been separately examined, using differing delivery vehicles. We compared the in-vitro transduction and target-mutagenesis efficiency of consortium-plasmid and adenoviral vector delivered HIV-1<i> pol </i>gene targeting ZFN with CRISPER/Cas. Custom-ZFN, CRISPER-Cas-9, plasmids and vectors (murCTSD_pZFN, pGS-U-gRNA, pCMV-Cas-D01A, Ad5-RGD); cell-lines (TZM-bl and ACH-2/J-Lat cells); and the latency reversing agents Prostatin, SAHA, and PMA were used...
November 28, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/29182244/allosteric-modulation-of-grb2-recruitment-to-the-intrinsically-disordered-scaffold-protein-lat-by-remote-site-phosphorylation
#13
William Y C Huang, Jonathon A Ditlev, Han-Kuei Chiang, Michael K Rosen, Jay T Groves
Tyrosine phosphorylation of membrane receptors and scaffold proteins followed by recruitment of SH2 domain-containing adaptor proteins constitutes a central mechanism of intracellular signal transduction. During early T-cell receptor (TCR) activation, phosphorylation of linker for activation of T cells (LAT) leading to recruitment of adaptor proteins, including Grb2, is one prototypical example. LAT contains multiple modifiable sites, and this multivalency may provide additional layers of regulation, although this is not well understood...
November 28, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29175222/temporal-lobe-asymmetry-in-fdg-pet-uptake-predicts-neuropsychological-and-seizure-outcomes-after-temporal-lobectomy
#14
Janina Kamm, Laura L Boles Ponto, Ken Manzel, Owen J Gaasedelen, Yasunori Nagahama, Taylor Abel, Daniel Tranel
OBJECTIVE: The objective of this study was to determine whether preoperative [18F]fludeoxyglucose (FDG)-positron emission tomography (PET) asymmetry in temporal lobe metabolism predicts neuropsychological and seizure outcomes after temporal lobectomy (TL). METHODS: An archival sample of 47 adults with unilateral temporal lobe epilepsy who underwent TL of their language-dominant (29 left, 1 right) or nondominant (17 right) hemisphere were administered neuropsychological measures pre- and postoperatively...
January 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29164019/quantitative-analysis-of-electro-anatomical-maps-application-to-an-experimental-model-of-left-bundle-branch-block-cardiac-resynchronization-therapy
#15
David Soto Iglesias, Nicolas Duchateau, Constantine Butakoff Kostantyn Butakov, David Andreu, Juan Fernandez-Armenta, Bart Bijnens, Antonio Berruezo, Marta Sitges, Oscar Camara
Electro-anatomical maps (EAMs) are commonly acquired in clinical routine for guiding ablation therapies. They provide voltage and activation time information on a 3-D anatomical mesh representation, making them useful for analyzing the electrical activation patterns in specific pathologies. However, the variability between the different acquisitions and anatomies hampers the comparison between different maps. This paper presents two contributions for the analysis of electrical patterns in EAM data from biventricular surfaces of cardiac chambers...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29154251/long-term-effects-of-laryngeal-augmentation-with-calcium-hydroxyapatite-under-local-anaesthesia
#16
Ewelina Sielska-Badurek, Maria Sobol, Katarzyna Jędra, Anna Rzepakowska, Ewa Osuch-Wójcikiewicz, Kazimierz Niemczyk
Wstęp: Cel badania stanowi ocena efektów długoterminowych augmentacji krtani w znieczuleniu miejscowym przy pomocy hydroksyapatytu wapnia. Materiał i metody: W badaniu wzięło udział 17 pacjentów, którzy z powodu niewydolności szpary głośni (z powodu jednostronnego porażenia krtani oraz niewydolności mięśni wewnętrznych krtani) zostali zakwalifikowani do przeprowadzenia augmentacji krtani (10 kobiet i 17 mężczyzn), w wieku: 57,6±17,7 lat, mediana 61 lat, z zakresem: 32-83 lata. U wszystkich pacjentów wykonano augmentację krtani w znieczuleniu miejscowym, przez jamę ustną, podając bocznie od fałdu głosowego/ fałdów głosowych hydroksyapatyt wapnia (preparat Radiesse)...
October 31, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29151480/the-refinement-of-risk-stratification-for-atrial-thrombus-or-spontaneous-echo-contrast-in-nonvalvular-atrial-fibrillation
#17
Wenna Ning, Yang Li, Chunyan Ma, Liangxian Qiu, Bo Yu
As for nonvalvular atrial fibrillation (NVAF) patients with left atrial thrombus or spontaneous echo contrast (LAT/SEC), we evaluated the additional predictive value of serum uric acid (SUA) and Left atrial diameter (LAD) for CHADS2 and CHA2DS2-VASc, and explored the influence from the level of SUA and LAD to LAT/SEC in moderate risk group. Thus, we put forward the concept of a borderline high risk group to guide clinical anticoagulant therapy in patients with NVAF.A total of 284 NVAF patients without the history of anticoagulant prior to hospitalization were enrolled...
November 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/29136233/a-simple-method-for-calibrating-pixel-values-of-the-ct-localizer-radiograph-for-calculating-water-equivalent-diameter-and-size-specific-dose-estimate
#18
Choirul Anam, Toshioh Fujibuchi, Takatoshi Toyoda, Naoki Sato, Freddy Haryanto, Rena Widita, Idam Arif, Geoff Dougherty
The purpose of this study is to establish the relationship between the pixel value (I) of the CT localizer radiograph and water-equivalent thickness (tw) in a straightforward procedure. We used a body CTDI phantom, which was scanned in the AP and LAT projections. After transformation from the pixel values of the images to tw, water-equivalent diameter (Dw) and size-specific dose estimate were calculated on an anthropomorphic phantom and 30 patients retrospectively. We found a linear correlation between I and tw, with R2 ≥ 0...
November 9, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29132393/interferon-%C3%AE-inducible-protein-16-ifi16-is-required-for-the-maintenance-of-epstein-barr-virus-latency
#19
Gina Pisano, Arunava Roy, Mairaj Ahmed Ansari, Binod Kumar, Leela Chikoti, Bala Chandran
BACKGROUND: Epstein-Barr virus (EBV) exhibits both lytic and latent (Lat. I, II, and III) phases in an infected individual. It's during the latent phase of EBV that all EBV-associated cancers, including Burkitt's lymphoma, nasopharyngeal carcinoma and lymphoproliferative disease arise. Interferon-γ-inducible protein 16 (IFI16) is a well-established innate immune sensor and viral transcriptional regulator involved in response to invading DNA viruses. During latency, IFI16 remains in the nucleus, in part bound to the EBV genome; however, neither its role in EBV lytic cycle or latency has been established...
November 13, 2017: Virology Journal
https://www.readbyqxmd.com/read/29116649/wwc-proteins-regulate-hepatic-cell-differentiation-and-tumorigenesis-via-the-hippo-signaling-pathway
#20
Anke Hermann, Dirk Oliver Wennmann, Sascha Gromnitza, Maria Edeling, Veerle Van Marck, Marius Sudol, Liliana Schaefer, Kerstin Duning, Thomas Weide, Hermann Pavenstädt, Joachim Kremerskothen
The Hippo pathway regulates cell differentiation, proliferation and apoptosis. Upon activation, it inhibits the import of the transcriptional co-activator YAP into the nucleus, thus suppressing transcription of pro-proliferative genes. Hence, dynamic and precise control of the Hippo pathway is crucial for organ size control and the prevention of tumor formation. Hippo signaling is controlled by a growing number of upstream regulators - including WWC proteins - which trigger a serine/threonine kinase pathway...
November 8, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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