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https://www.readbyqxmd.com/read/27925364/discriminatory-ability-of-right-atrial-volumes-with-two-and-three-dimensional-echocardiography-to-detect-elevated-right-atrial-pressure-in-pulmonary-hypertension
#1
Ellen Ostenfeld, Anna Werther-Evaldsson, Henrik Engblom, Annika Ingvarsson, Anders Roijer, Carl Meurling, Johan Holm, Göran Rådegran, Marcus Carlsson
AIMS: Pulmonary hypertension (PH) patients have high mortality due to right ventricular failure. Predictors of poor prognostic outcome are increased right atrial volume (RAV) and elevated mean right atrial pressure (mRAP). Our aim was to determine whether RAV measured with 2D echocardiography (2DE) and 3D echocardiography (3DE) can detect elevated mRAP in patients evaluated for PH. METHODS: Of 85 patients prospectively evaluated for PH, 44 patients (63 ± 15 years, 57% female) had 2DE, 3DE and right heart catheterization within 48 h and were in sinus rhythm...
December 7, 2016: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/27923487/reimplantation-of-the-aortic-valve-at-20%C3%A2-years
#2
Tirone E David, Carolyn M David, Christopher M Feindel, Cedric Manlhiot
OBJECTIVE: To provide additional information on clinical and echocardiographic outcomes after reimplantation of the aortic valve (RAV) in patients with aortic root aneurysm. METHODS: All 333 patients who underwent RAV at our hospital between 1989 and 2012 were followed prospectively with periodical clinical assessment and echocardiography. The mean duration of clinical follow-up was 10.3 ± 6.8 years, and follow-up was completed within 2 years before this report...
November 16, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27916924/divergent-expression-patterns-in-two-vernicia-species-revealed-the-potential-role-of-the-hub-gene-vmap2-erf036-in-resistance-to-fusarium-oxysporum-in-vernicia-montana
#3
Qiyan Zhang, Ming Gao, Liwen Wu, Yangdong Wang, Yicun Chen
Tung oil tree (Vernicia fordii) is a promising industrial oil crop; however, this tree is highly susceptible to Fusarium wilt disease. Conversely, Vernicia montana is resistant to the pathogen. The APETALA2/ethylene-responsive element binding factor (AP2/ERF) transcription factor superfamily has been reported to play a significant role in resistance to Fusarium oxysporum. In this study, comprehensive analysis identified 75 and 81 putative Vf/VmAP2/ERF transcription factor-encoding genes in V. fordii and V. montana, respectively, which were divided into AP2, ERF, related to ABI3 and VP1 (RAV) and Soloist families...
December 1, 2016: Genes
https://www.readbyqxmd.com/read/27913920/ns5a-resistance-associated-variants-undermine-the-effectiveness-of-ledipasvir-and-sofosbuvir-for-cirrhotic-patients-infected-with-hcv-genotype-1b
#4
Eiichi Ogawa, Norihiro Furusyo, Hideyuki Nomura, Kazufumi Dohmen, Nobuhiko Higashi, Kazuhiro Takahashi, Akira Kawano, Koichi Azuma, Takeaki Satoh, Makoto Nakamuta, Toshimasa Koyanagi, Masaki Kato, Shinji Shimoda, Eiji Kajiwara, Jun Hayashi
BACKGROUND: Little real-world cohort data has been reported for Asians who have received interferon-free regimens with sofosbuvir (SOF) for chronic hepatitis C virus (HCV) infection. We evaluated the effectiveness and safety in clinical practice of ledipasvir (LDV) plus SOF for Japanese patients infected with HCV genotype 1. METHODS: This large, multicenter, real-world cohort study consisted of 772 patients treatment-naive or -experienced, with or without compensated cirrhosis, who were treated with LDV (90 mg)/SOF (400 mg) for a fixed 12-week duration...
December 2, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27910116/the-cost-effectiveness-of-testing-for-ns5a-resistance-associated-polymorphisms-at-baseline-in-genotype-1a-infected-treatment-na%C3%A3-ve-and-treatment-experienced-subjects-treated-with-all-oral-elbasvir-grazoprevir-regimens-in-the-united-states
#5
E H Elbasha, M N Robertson, C Nwankwo
BACKGROUND: The presence of baseline NS5A resistance-associated variants (RAVs) impacted treatment response in HCV genotype 1a (GT1a)-infected patients treated with elbasvir/grazoprevir (EBR/GZR) for 12 weeks, but not patients treated with EBR/GZR and ribavirin (RBV) for 16 weeks. AIM: We assessed the cost-effectiveness of baseline testing for NS5A RAVs in EBR/GZR-treated patients compared without testing and with current treatments for GT1a patients. METHODS: We simulated the course of treatment with EBR/GZR, ledipasvir/sofosbuvir (LDV/SOF) and ombitasvir/paritaprevir/ritonavir+dasabuvir (3D) with or without RBV and natural history of disease of GT1a patients...
December 1, 2016: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27898817/genome-wide-identification-of-the-ap2-erf-gene-family-involved-in-active-constituent-biosynthesis-in
#6
A J Ji, H M Luo, Z C Xu, X Zhang, Y J Zhu, B S Liao, H Yao, J Y Song, S L Chen
Tanshinones and phenolic acids are the major bioactive constituents in the traditional medicinal crop ; however, transcription factors (TFs) are seldom investigated with regard to their regulation of the biosynthesis of these compounds. Here a complete overview of the APETALA2/ethylene-responsive factor (AP2/ERF) transcription factor family in is provided, including phylogeny, gene structure, conserved motifs, and gene expression profiles of different organs (root, stem, leaf, flower) and root tissues (periderm, phloem, xylem)...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27898525/characterization-of-hcv-ns3-protease-variants-in-hcv-hiv-coinfected-patients-by-ultra-deep-sequence-analysis-relationship-to-hepatic-fibrosis
#7
Enass A Abdel-Hameed, Susan D Rouster, Xiang Zhang, Jing Chen, Mario Medvedovic, Zachary D Goodman, Kenneth E Sherman
BACKGROUND: Treatment of HCV/HIV coinfection is now largely based upon utilization of direct acting agents. Pre-treatment viral resistant-associated variants (RAVs) and host liver condition may affect the sustained virological response. In this study, we explored relative prevalence of protease resistance-associated mutations, the evolution of those RAVs following 12 weeks of pegylated interferon alfa exposure, and the role hepatic fibrosis might have on RAV display. METHODS: Thirty nonresponder HCV/ HIV coinfected subjects were evaluated pre- and post- 12 weeks of pegIFN treatment...
November 25, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27861895/effects-of-postural-change-from-supine-to-head-up-tilt-on-skin-sympathetic-nerve-activity-component-synchronised-with-cardiac-cycle-in-warmed-men
#8
Yu Ogawa, Yoshi-Ichiro Kamijo, Shigeki Ikegawa, Shizue Masuki, Hiroshi Nose
In humans, the cutaneous vasodilatation response to hyperthermia has been suggested to be suppressed by baroreflexes to maintain arterial pressure when the posture was changed from supine to upright, and if the reflexes do not function sufficiently, it can cause heat syncope. However, the efferent signals of the reflexes have not been identified. To identify the signals, we continuously measured skin sympathetic nerve activity (SSNA; microneurography), right atrial volume (RAV; echocardiography, the baroreceptors for the reflexes are reportedly located), cutaneous vascular conductance on the chest (CVCchest ; laser Doppler flowmetry), and oesophageal temperature (Toes ; thermocouple) in young men before and after passive warming with a perfusion suit, during which periods the posture was changed from supine to 30° head-up tilt positions...
November 8, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27833382/polymorphisms-and-resistance-mutations-of-hepatitis-c-virus-on-sequences-in-the-european-hepatitis-c-virus-database
#9
Dimas Alexandre Kliemann, Cristiane Valle Tovo, Ana Beatriz Gorini da Veiga, Angelo Alves de Mattos, Charles Wood
AIM: To evaluate the occurrence of resistant mutations in treatment-naïve hepatitis C virus (HCV) sequences deposited in the European hepatitis C virus database (euHCVdb). METHODS: The sequences were downloaded from the euHCVdb (https://euhcvdb.ibcp.fr/euHCVdb/). The search was performed for full-length NS3 protease, NS5A and NS5B polymerase sequences of HCV, separated by genotypes 1a, 1b, 2a, 2b and 3a, and resulted in 798 NS3, 708 NS5A and 535 NS5B sequences from HCV genotypes 1a, 1b, 2a, 2b and 3a, after the exclusion of sequences containing errors and/or gaps or incomplete sequences, and sequences from patients previously treated with direct antiviral agents (DAA)...
October 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27830680/-identification-and-characterization-of-ap2-erf-transcription-factors-in-moso-bamboo-phyllostachys-edulis
#10
Z Huang, X-J Zhong, J He, M-Y Jiang, X-F Yu, X Li
Bamboo belongs to subfamily Bambusoideae of the grass family and is one of the most important non-timber forest resources in the world. The AP2/ERF superfamily is a group of plant specific transcription factors and plays important roles in the regulation of plant growth and responses to biotic and abiotic stress. By comprehensively analyzing the recently uncovered whole genome sequence and full length cDNA of moso bamboo (Phyllostachys edulis), 142 AP2/ERF transcription factors were identified and 53 among them are supported by full length cDNA...
September 2016: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/27812165/pre-existing-hcv-variants-resistant-to-daas-and-their-sensitivity-to-pegifn-rbv-in-chinese-hcv-genotype-1b-patients
#11
Yu Zhang, Ying Cao, Renwen Zhang, Xiaxia Zhang, Haiying Lu, Chihong Wu, Na Huo, Xiaoyuan Xu
BACKGROUND: The efficacy of direct-acting antiviral agents (DAAs) could be attenuated by the presence of resistance-associated variants (RAVs). The aim of this study was to investigate the natural prevalence of RAVs among Chinese HCV genotype 1b patients and analyze the efficacy of pegylated interferon (PegIFN)/ribavirin (RBV) therapy in patients with and without RAVs at baseline. METHODS: Direct sequencing of the HCV NS3, NS5A and NS5B regions was performed in baseline serum samples of 117 DAAs-naïve subjects infected with HCV genotype 1b...
2016: PloS One
https://www.readbyqxmd.com/read/27804313/antiretroviral-treatment-for-hiv-infection-swedish-recommendations-2016
#12
Jaran Eriksen, Jan Albert, Anders Blaxhult, Christina Carlander, Leo Flamholc, Magnus Gisslén, Filip Josephson, Olof Karlström, Lars Navér, Veronica Svedhem, Aylin Yilmaz, Anders Sönnerborg
The Swedish Medical Products Agency and the Swedish Reference Group for Antiviral Therapy (RAV) have jointly published recommendations for the treatment of HIV infection on seven previous occasions (2002, 2003, 2005, 2007, 2009, 2011 and 2014). In February 2016, an expert group under the guidance of RAV once more revised the guidelines. The most important updates in the present guidelines are as follows: Tenofovir alafenamide (TAF) has recently been registered. TAF has several advantages over tenofovir disoproxilfumarate (TDF) and is recommended instead of TDF in most cases...
November 2, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27795899/altered-expression-of-the-mismatch-repair-genes-in-df-1-cells-infected-with-the-avian-leukosis-virus-subgroup-a
#13
Da-Wei Yao, Li Zhan, Yu-Fang Hong, Jian-Xin Liu, Jia-Rong Xu, De-Ji Yang
The absence or deficiency of DNA mismatch repair (MMR) activity results in microsatellite instability (MSI) in cancer. The avian leukosis virus (ALV) causes neoplastic disease in chickens. In this study, the status of MMR, MSI, the cell cycle and apoptosis were detected in DF-1 cells after avian leukosis virus subgroup A infection. Flow cytometry analysis results indicated that there was no significant difference in cell apoptosis between the control and infected groups. The percentage of cells in S and G2 phases were increased in the infected group...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27704215/natural-occurrence-of-ns5b-inhibitor-resistance-associated-variants-in-brazilian-patients-infected-with-hcv-or-hcv-and-hiv
#14
Caroline Furtado Noble, Fernanda Malta, Gaspar Lisboa-Neto, Michele Soares Gomes-Gouvêa, Andrea Gurgel Batista Leite, Vanessa Fusco Duarte de Castro, Rubia Anita Ferraz Santana, Flair José Carrilho, Maria Cássia Mendes-Correa, João Renato Rebello Pinho
Resistance-associated variants (RAVs) represent a challenge to the success of new HCV therapies. The aim of this study was to describe the prevalence of naturally occurring NS5B RAVs in Brazilian direct acting antivirals (DAA)-naïve patients infected with HCV genotype 1, or co-infected with HIV. Patient enrollment and sample collection were performed between 2011 and 2013. Using Sanger-based sequencing, 244 sequences were obtained. RAVs detected in HCV-1a sequences were V321A (1.6 %), M414V (1.3 %), A421V (21...
October 4, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27703205/effects-of-resistance-associated-ns5a-mutations-in-hepatitis-c-virus-on-viral-production-and-susceptibility-to-antiviral-reagents
#15
Sayuri Nitta, Yasuhiro Asahina, Mami Matsuda, Norie Yamada, Ryuichi Sugiyama, Takahiro Masaki, Ryosuke Suzuki, Nobuyuki Kato, Mamoru Watanabe, Takaji Wakita, Takanobu Kato
Direct-acting antivirals (DAAs) for hepatitis C virus (HCV) have potent anti-HCV effects but may provoke resistance-associated variants (RAVs). In this study, we assessed the characteristics of these RAVs and explored efficacious anti-HCV reagents using recombinant HCV with NS5A from a genotype 1b strain. We replaced the NS5A of JFH1 with that of Con1 (JFH1/5ACon1) and introduced known NS5A inhibitor resistance mutations (L31M, L31V, L31I and Y93H) individually or in combination. Susceptibilities against anti-HCV reagents were also investigated...
October 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27696111/atrial-focused-views-improve-the-accuracy-of-two-dimensional-echocardiographic-measurements-of-the-left-and-right-atrial-volumes-a-contribution-to-the-increase-in-normal-values-in-the-guidelines-update
#16
Kalie Kebed, Eric Kruse, Karima Addetia, Boguslawa Ciszek, Minnie Thykattil, Brittney Guile, Roberto M Lang, Victor Mor-Avi
Current guidelines recommend that the atria be measured in 2D echocardiographic (2DE) apical views using the method-of-disks (MOD) or area-length (AL) technique as an alternative, although no definitive data exists that these are interchangeable. However, standard apical views maximize the long-axis of the left ventricle, rather than the dimensions of the atria, resulting in atrial foreshortening. We hypothesized that the increase in normal values of atrial volumes in the recent guidelines update was driven by data obtained using either the AL technique or dedicated atrial-focused views, which maximize the longitudinal dimension of the atria and thus provide larger volumes than the MOD measurements in standard apical views...
October 1, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27685471/ns3-resistance-associated-variants-ravs-in-patients-infected-with-hcv-genotype-1a-in-spain
#17
María Ángeles Jimenez-Sousa, Mónica Gutiérrez-Rivas, Alejandro Álvaro-Meca, Mónica García-Álvarez, P Richard Harrigan, Cesare Giovanni Fedele, Verónica Briz, Sonia Vázquez-Morón, Salvador Resino
BACKGROUND: Resistance-associated variants have been related to treatment failure of hepatitis C virus (HCV) therapy with direct-acting antiviral drugs. The aim of our study was to analyze the prevalence of clinically relevant resistance-associated variants within NS3 in patients infected with HCV genotype 1a (GT1a) in Spain. METHODS: We performed a cross-sectional study on 2568 patients from 115 hospitals throughout Spain (2014-2015). The viral NS3 protease gene was amplified by nested polymerase chain reaction and sequenced by Sanger sequencing using an ABI PRISM 377 DNA sequencer...
2016: PloS One
https://www.readbyqxmd.com/read/27662552/the-hepatitis-c-virus-ns3-q80k-polymorphism-is-frequently-detected-and-transmitted-among-hiv-infected-msm-in-the-netherlands
#18
Astrid M Newsum, Cynthia K Y Ho, Faydra I Lieveld, Thijs J W Van De Laar, Sylvie M Koekkoek, Sjoerd P Rebers, Jan T M Van Der Meer, Anne M J Wensing, Greet J Boland, Joop E Arends, Karel J Van Erpecum, Maria Prins, Richard Molenkamp, Janke Schinkel
OBJECTIVES: The Q80K polymorphism is a naturally occurring resistance-associated variant (RAV) in the hepatitis C virus (HCV) NS3 region and is likely transmissible between hosts. This study describes the Q80K origin and prevalence among HCV risk groups in the Netherlands and examines whether Q80K is linked to specific transmission networks. DESIGN AND METHODS: Stored blood samples from HCV genotype 1a infected patients were used for PCR and sequencing to reconstruct the NS3 maximum likelihood phylogeny...
September 20, 2016: AIDS
https://www.readbyqxmd.com/read/27651375/does-catheter-shape-influence-the-success-of-right-adrenal-venous-sampling-the-interaction-of-catheter-shape-to-anatomical-factors-on-ct
#19
Takuji Araki, Hiroki Okada, Hiroshi Onishi
PURPOSE: To evaluate the importance of selecting an appropriate catheter shape for the right adrenal vein (RAV) anatomy on CT to the success of right adrenal venous sampling (RAVS) by elucidating the interactions of anatomical factors with catheter shape. MATERIALS AND METHODS: 130 patients with enhanced CT underwent RAVS using two catheters: catheter 1 was planar and catheter 2 was a three-dimensional shape. The following anatomical factors on CT were evaluated in each patient: presence of a right adrenal tumor, presence of a common trunk with an accessory right hepatic vein, diameter of the RAV, short and long diameters of the IVC, ratio of the long to the short diameter of IVC, and the transverse, modified transverse, and vertical angles of the RAV...
September 20, 2016: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/27641232/affinity-maturation-of-a-broadly-neutralizing-human-monoclonal-antibody-that-prevents-acute-hepatitis-c-virus-infection-in-mice
#20
Zhen-Yong Keck, Yong Wang, Patrick Lau, Garry Lund, Sneha Rangarajan, Catherine Fauvelle, Grant C Liao, Frederick W Holtsberg, Kelly L Warfield, M Javad Aman, Brian G Pierce, Thomas R Fuerst, Justin R Bailey, Thomas F Baumert, Roy A Mariuzza, Norman M Kneteman, Steven K H Foung
: Direct-acting antivirals (DAAs) have led to a high cure rate in treated patients with chronic hepatitis C virus (HCV) infection, but this still leaves a large number of treatment failures secondary to the emergence of resistance-associated variants (RAVs). To increase the barrier to resistance, a complementary strategy is to use neutralizing human monoclonal antibodies (HMAbs) to prevent acute infection. However, earlier efforts with the selected antibodies led to RAVs in animal and clinical studies...
December 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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