Read by QxMD icon Read


Y Noda, S Goshima, S Nagata, T Miyoshi, H Kawada, N Kawai, Y Tanahashi, M Matsuo
AIM: To compare right adrenal vein (RAV) visualisation and contrast enhancement degree on adrenal venous phase images reconstructed using adaptive statistical iterative reconstruction (ASiR) and model-based iterative reconstruction (MBIR) techniques. MATERIAL AND METHODS: This prospective study was approved by the institutional review board, and written informed consent was waived. Fifty-seven consecutive patients who underwent adrenal venous phase imaging were enrolled...
February 16, 2018: Clinical Radiology
Yuki Haga, Tatsuo Kanda, Shin Yasui, Masato Nakamura, Yoshihiko Ooka, Koji Takahashi, Shuang Wu, Shingo Nakamoto, Makoto Arai, Tetsuhiro Chiba, Hitoshi Maruyama, Osamu Yokosuka, Nobuo Takada, Mitsuhiko Moriyama, Fumio Imazeki, Naoya Kato
Background: Interferon-free treatment results in higher sustained virologic response (SVR) rates, with no serious adverse events in hepatitis C virus (HCV)-infected patients. However, in some patients with treatment-failure in HCV NS5A inhibitor-including interferon-free regimens, the treatment-emergent HCV NS5A resistance-associated variants (RAVs), which are resistant to interferon-free retreatment including HCV NS5A inhibitors, are observed. In HCV-infected Japanese patients with daclatasvir and asunaprevir treatment failure, retreatment with sofosbuvir and ledipasvir could lead to only ∼70% SVR rates...
January 12, 2018: Oncotarget
Chacha M Issarow, Nicola Mulder, Robin Wood
Tuberculosis (TB) transmission results from the interaction between infective sources and susceptible individuals within enabling socio-environmental conditions. As TB is an airborne pathogen, the transmission probability is determined by the volume of air inhaled from an infected source and the concentration of Mycobacterium tuberculosis containing respirable particles (doses) per volume of air. In this study, we model the contributions of infectious dose production, prevalence of infectious cases and daily rebreathed air volume (RAV) for defining the boundary conditions necessary to sustain endemic TB transmission at the population level...
January 2018: Royal Society Open Science
Zhikun Li, Gengwu Li, Chao Chen, Yifan Li, Changwei Yang, Ming Li, Wei Xu, Xiaodong Zhu
Various parameters related to growth and maturity have been shown to be risk factors for scoliosis curve progression. We previously identified correlations between curve progression and radiographic parameters in clinical practice, but there is a lack of research.The aim of this study was to investigate and identify the radiographic parameters that are risk factors for rapid curve progression in Lenke 5 or 6 adolescent idiopathic scoliosis (AIS).A retrospective review of patients who were prospectively enrolled at the initiation of brace wear and followed through completion of bracing or surgery was performed...
December 2017: Medicine (Baltimore)
Lars Navér, Jan Albert, Christina Carlander, Leo Flamholc, Magnus Gisslén, Olof Karlström, Veronica Svedhem-Johansson, Anders Sönnerborg, Katarina Westling, Aylin Yilmaz, Karin Pettersson
Prophylaxis and treatment with antiretroviral drugs have resulted in a very low rate of mother-to-child transmission (MTCT) of HIV during recent years. Registration of new antiretroviral drugs, modification of clinical praxis, updated general treatment guidelines and increasing knowledge about MTCT have necessitated regular revisions of the recommendations for 'Prophylaxis and treatment of HIV-1 infection in pregnancy'. The Swedish Reference Group for Antiviral Therapy (RAV) has updated the recommendations from 2013 at an expert meeting 19 September 2017...
January 24, 2018: Infectious Diseases
Bradley R Jones, Anita Y M Howe, P Richard Harrigan, Jeffrey B Joy
New, costly, fast acting, therapies targeting the non-structural proteins 5A and 5B (NS5A and NS5B) regions of the hepatitis C virus (HCV) genome are curative in the majority of cases. Variants with certain mutations in the NS5A and NS5B regions of HCV have been shown to reduce susceptibility to direct-acting NS5A and NS5B therapy and are found in treatment naïve patients. Despite this, the ease with which these variants evolve is poorly known, as are their evolutionary and geographic origins. To address this crucial gap we inferred the evolutionary and geographic origins of resistance-associated variants (RAVs) in the HCV NS5A and NS5B regions of subtypes 1a, 1b, and 3a sequences available from global databases...
January 2018: Virus Evolution
Jia-Horng Kao, Min-Lung Yu, Chi-Yi Chen, Cheng-Yuan Peng, Ming-Yao Chen, Huoling Tang, Qiaoqiao Chen, Jinzi J Wu
BACKGROUND AND AIM: The need for all-oral HCV treatments with higher response rates, improved tolerability and lower pill burden compared to interferon-inclusive regimen has led to the development of new direct-acting antiviral agents (DAAs). Ravidasvir (RDV) is a second-generation, pan-genotypic NS5A inhibitor with high barrier to resistance. The aim of this phase 2 study (EVERST study) was to assess the efficacy and safety of interferon-free, 12-week RDV plus ritonavir-boosted danoprevir (DNVr) and ribavirin (RBV) regimen for treatment-naïve Asian HCV genotype 1 (GT1) patients without cirrhosis...
January 18, 2018: Journal of Gastroenterology and Hepatology
Miłosz Parczewski, Iwona Cielniak, Justyna Kordek, Bogusz Aksak-Wąs, Anna Urbańska, Magdalena Leszczyszyn-Pynka, Ewa Siwak, Monika Bociąga-Jasik, Anna Nowak, Aleksandra Szymczak, Małgorzata Zalewska, Władysław Łojewski, Anne-Mieke Vandamme, Nadine Lübke, Lize Cuypers
BACKGROUND: Hepatitis C virus (HCV) resistance-associated variants (RAVs) have been shown to adversely affect treatment response of direct-acting antivirals (DAAs). Identifying pre-existing RAVs and transmission networks among HIV/HCV genotype 1 (G1) infected patients from Poland will assist in shaping surveillance strategies for HCV. METHODS: NS3 and NS5A sequences were obtained from samples of 112 DAA-naive G1 patients (45 G1a, 67 G1b), of which 74 were chronically infected and 38 were diagnosed with acute hepatitis C (AHC)...
January 15, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Nazir A Ismail, Shaheed V Omar, Lavania Joseph, Netricia Govender, Linsay Blows, Farzana Ismail, Hendrik Koornhof, Andries W Dreyer, Koné Kaniga, Norbert Ndjeka
BACKGROUND: Bedaquiline (BDQ) is a novel agent approved for use in combination treatment of multi-drug resistant tuberculosis (MDR-TB). We sought to determine BDQ epidemiological cut-off values (ECVs), define and assess interpretive criteria against putative resistance associated variants (RAVs), microbiological outcomes and cross resistance with clofazimine (CFZ). METHODS: A retrospective cohort study was conducted. Minimal inhibitory concentrations (MIC) to BDQ were determined using 7H9 broth microdilution (BMD) and MGIT960...
January 9, 2018: EBioMedicine
Yuki Takahashi, Hideki Ota, Kensuke Omura, Yutaka Dendo, Katharina Otani, Tomonori Matsuura, Masahiro Kitami, Kazumasa Seiji, Yuta Tezuka, Masahiro Nezu, Yoshikiyo Ono, Ryo Morimoto, Fumitoshi Satoh, Kei Takase
OBJECTIVES: To compare image quality and radiation dose of right adrenal vein (RAV) imaging computed tomography (CT) among conventional, low kV, and low kV with reduced contrast medium protocols. METHODS: One-hundred-and-twenty patients undergoing adrenal CT were randomly assigned to one of three protocols: contrast dose of 600mgI/kg at 120-kV tube voltage setting (600-120 group), 600mgI/kg at 80kV (600-80 group), and 360mgI/kg at 80kV (360-80 group). Iterative reconstruction was used for 80-kV groups...
January 2018: European Journal of Radiology
Zhanyi Li, Ying Liu, Ying Zhang, Xiaoqiong Shao, Qiumin Luo, Xiaoyan Guo, Guoli Lin, Qingxian Cai, Zhixin Zhao, Yutian Chong
Background and Objective: The direct-acting antiviral agents (DAAs) antiviral therapy has drastically improved the prognosis of hepatitis C virus (HCV) patients. However, the viral drug resistance-associated variants (RAVs) can limit the efficacy of DAAs. For the HCV-6a is not the predominant prevalent genotype; the data on the prevalence of naturally occurring RAVs in it is scarce. Our study aims to assess the prevalence of RAVs in treatment-naive HCV-6a patients. Methods: Nested PCR assays were performed on 95 HCV-6a patients to amplify HCV viral regions of NS3, NS5A, and NS5B...
2017: BioMed Research International
Yunxie Wei, Yanli Chang, Hongqiu Zeng, Guoyin Liu, Chaozu He, Haitao Shi
With 1 AP2 domain and 1 B3 domain, 7 MeRAVs in apetala2/ethylene response factor (AP2/ERF) gene family have been identified in cassava. However, the in vivo roles of these remain unknown. Gene expression assays showed that the transcripts of MeRAVs were commonly regulated after Xanthomonas axonopodis pv manihotis (Xam) and MeRAVs were specifically located in plant cell nuclei. Through virus-induced gene silencing (VIGS) in cassava, we found that MeRAV1 and MeRAV2 are essential for plant disease resistance against cassava bacterial blight, as shown by the bacterial propagation of Xam in plant leaves...
January 2018: Journal of Pineal Research
Song Yang, Huichun Xing, Shenghu Feng, Wei Ju, Shunai Liu, Xiaomei Wang, Weini Ou, Jun Cheng, Calvin Q Pan
There is little information on the association between baseline non-structural protein (NS) 5b resistance-associated variants (RAVs) and treatment failure in hepatitis C patients. This study examined the frequencies of natural hepatitis C virus (HCV) NS5B resistance-associated variants (RAVs) in an Asian cohort. Samples from Asian HCV patients enrolled between October 2009 and September 2014 were analyzed for NS5B RAVs within the region from amino acid 230 to 371. Serum samples were tested by PCR genotyping, with sequence alignment performed using the neighbor-joining method...
November 15, 2017: Archives of Virology
Yoshifumi Noda, Satoshi Goshima, Shoma Nagata, Hiroshi Kawada, Nobuyuki Kawai, Hiromi Koyasu, Masayuki Matsuo
PURPOSE: To evaluate the visualization of the right adrenal vein (RAV) on dynamic contrast-enhanced computed tomography (CT) images in patients with primary aldosteronism. MATERIALS AND METHODS: We evaluated 27 consecutive patients with primary aldosteronism who underwent contrast-enhanced dynamic CT and subsequent adrenal venous sampling. Scan delays were 10-, 20- and 60-s after a bolus-tracking program detected that the threshold of a 100 Hounsfield units (HU) increase in the abdominal aorta had been achieved...
November 2017: European Journal of Radiology
Yun Hua, Daniel P Camarco, Christopher J Strock, Paul A Johnston
Transcriptional Intermediary Factor 2 (TIF2) is a key Androgen receptor (AR) coactivator that has been implicated in the development and progression of castration resistant prostate cancer (CRPC). This chapter describes the implementation of an AR-TIF2 protein-protein interaction (PPI) biosensor assay to screen for small molecules that can induce AR-TIF2 PPIs, inhibit the DHT-induced formation of AR-TIF2 PPIs, or disrupt pre-existing AR-TIF2 PPIs. The biosensor assay employs high content imaging and analysis to quantify AR-TIF2 PPIs and integrates physiologically relevant cell-based assays with the specificity of binding assays by incorporating structural information from AR and TIF2 functional domains along with intracellular targeting sequences using fluorescent protein reporters...
2018: Methods in Molecular Biology
Koichi Honda, Masataka Seike, Junya Oribe, Mizuki Endo, Mie Arakawa, Masanori Tokoro, Masao Iwao, Tetsu Mori, Junko Nishimura, Yukou Takahashi, Kaoru Omori, Tsutomu Yamashita, Toyokichi Muro, Kazunari Murakami
AIMS: PCR-Invader is a highly sensitive assay for detecting non-structural protein 5A (NS5A) resistance-associated variants (RAVs) of hepatitis C virus (HCV). Here, we validated the accuracy of the semiquantitative PCR-Invader (SQ-PI) assay compared to direct sequencing (DS) for identifying NS5A RAVs, and we evaluated the treatment efficacy of daclatasvir plus asunaprevir (DCV + ASV) for patients judged to be non-positive for NS5A RAVs by SQ-PI. METHODS: Detection rates of NS5A RAVs by SQ-PI and DS were compared for 204 patients with HCV genotype 1b...
October 28, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
Hajar Owji, Ali Hajiebrahimi, Hassan Seradj, Shiva Hemmati
Using homology and domain authentication, 321 putative AP2/ERF transcription factors were identified in Brassica napus, called BnAP2/ERF TFs. BnAP2/ERF TFs were classified into five major subfamilies, including DREB, ERF, AP2, RAV, and BnSoloist. This classification is based on phylogenetic analysis, motif identification, gene structure analysis, and physiochemical characterization. These TFs were annotated based on phylogenetic relationship with Brassica rapa. BnAP2/ERF TFs were located on 19 chromosomes of B...
December 2017: Computational Biology and Chemistry
Toru Ikegami, Yoshihide Ueda, Nobuhisa Akamatsu, Kohei Ishiyama, Ryoichi Goto, Akihiko Soyama, Kaori Kuramitsu, Masaki Honda, Masahiro Shinoda, Tomoharu Yoshizumi, Hideaki Okajima, Yuko Kitagawa, Yukihiro Inomata, Yonson Ku, Susumu Eguchi, Akinobu Taketomi, Hideki Ohdan, Norihiro Kokudo, Mitsuo Shimada, Katsuhiko Yanaga, Hiroyuki Furukawa, Shinji Uemoto, Yoshihiko Maehara
The safety and efficacy of an IFN-free regimen using asunaprevir (ASV) and daclatasvir (DCV) for recurrent hepatitis C virus (HCV) infection after liver transplantation (LT) have not been evaluated in Japan. A multicenter study of LT recipients (n = 74) with recurrent HCV genotype 1b infection treated with ASV-DCV for 24 weeks was performed. Medical history was positive for pegylated interferon and ribavirin (Peg-IFN/RBV) in 40 (54.1%) patients, and for simeprevir (SMV) with Peg-IFN/RBV in 12 (16.2%) patients...
September 7, 2017: Clinical Transplantation
Hyun Woong Lee, Ki Young Yoo, Joung Won Won, Hyung Joon Kim
Background/Aims: Chronic hepatitis C (CHC) is a major comorbidity in patients with hemophilia. Methods: Patients (n=30) were enrolled between September 2015 and April 2016. Twenty-six patients were genotype 1 (1b, n=21; 1a, n=5) and four patients were genotype 2a/2b. Among 21 patients with genotype 1b, Y93H resistance-associated variants (RAVs) were detected in three patients (14.3%). We evaluated sustained virologic response (SVRs) at 12 weeks, as well as relapse and safety...
September 15, 2017: Gut and Liver
Narathon Manee, Nipa Thongbaiphet, Ekawat Pasomsub, Wasun Chantratita
Hepatitis C virus (HCV) infection is a leading cause of chronic liver disease, cirrhosis and hepatocellular carcinoma. Recently, HCV was classified into 6 major genotypes (GTs) and 67 subtypes (STs). Efficient genotyping has become an essential tool for prognosis and indicating suitable treatment, prior to starting therapy in all HCV-infected individuals. The widely used genotyping assays have limitation with regard to genotype accuracy. This study was a comparative evaluation of exact HCV genotyping in a newly developed automated-massively parallel sequencing (MPS) system, versus the established Line probe assay 2...
August 26, 2017: Journal of Virological Methods
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"