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Su Jung Hwang, Hyeung-Geun Park, Yohan Park, Hyo-Jong Lee
Previously, we reported that α-quaternary chiral lactam derivatives have broad spectrum anticancer activity. However, the underlying molecular mechanisms and its relevance are largely unknown. In the present study, we report progress on α-quaternary chiral lactam analogues that address this, focusing on the novel analogue YH-304 as a candidate to broadly target human cancer cells. The effect of YH-304 on cell transformation was assessed by clonogenic assay in non-small cell lung cancer cells (NSCLCs) A549 and 226B...
October 11, 2016: International Journal of Oncology
Maudrene Ls Tan, Eric Yh Khoo, Konstadina Griva, Yung Seng Lee, Mohamed Amir, Yasmin Lm Zuniga, Jeannette Lee, E Shyong Tai, Hwee Lin Wee
INTRODUCTION: The Diabetes Health Profile-18 (DHP-18) measures diabetes-related psychological well-being in patients with type 2 diabetes mellitus (T2DM). It includes 3 subscales: psychological distress (PD), barriers to activity and disinhibited eating. The psychometric properties of the DHP have not been evaluated in Asia. The aim of this study was to determine the psychometric properties of the DHP in multiethnic Singapore. MATERIALS AND METHODS: Patients between the ages of 18 to 65 diagnosed with diabetes (either type 1 or type 2) for at least 1 year were recruited from a diabetes outpatient clinic in a tertiary hospital...
September 2016: Annals of the Academy of Medicine, Singapore
Derek L Chappell, Anita Yh Lee, Harold S Bernstein, Michael E Lassman, Omar F Laterza
AIM: Patients with elevated levels of B-type natriuretic peptide (BNP) and/or NT-proBNP as measured by clinical tests have an elevated risk of heart failure (HF). Despite utility in large clinical studies, both assays are plagued by large biological variability and specificity issues. To address these concerns and further investigate BNP in the HF setting, we developed an LC/MS assay to characterize the ratio of active to total BNP. RESULTS: We have developed and validated a novel immunoaffinity LC/MS assay to measure BNP-derived fragments, as well as 'total BNP' in human plasma...
October 7, 2016: Bioanalysis
Eduard Shantsila, Gregory Yh Lip
BACKGROUND: Morbidity in patients with chronic heart failure is high, and this predisposes them to thrombotic complications, including stroke and thromboembolism, which in turn contribute to high mortality. Oral anticoagulants (e.g. warfarin) and antiplatelet agents (e.g. aspirin) are the principle oral antithrombotic agents. Many heart failure patients with sinus rhythm take aspirin because coronary artery disease is the leading cause of heart failure. Oral anticoagulants have become a standard in the management of heart failure with atrial fibrillation...
September 15, 2016: Cochrane Database of Systematic Reviews
A A Boligon, L De Vargas, D D Silveira, V M Roso, G S Campos, R Z Vaz, F R P Souza
Estimation and prediction ability of linear and threshold models for yearling breed quality score (BQ) and navel development score at weaning (WN) and yearling (YN), considering variances, heritabilities, and rank correlations based on the breeding values predicted for bulls, were compared. Furthermore, it was determined whether BQ, WN, and YN are genetically associated with growth traits (BWG: birth to weaning weight gain, WH: weaning height, WYG: weaning to yearling weight gain, YH: yearling height) to field data of Nelore cattle...
September 15, 2016: Tropical Animal Health and Production
Clement C M Leung, Daniel Carradice, Tom Wallace, Ian C Chetter
BACKGROUND: Endovenous thermal techniques, such as endovenous laser ablation (EVLA), are the recommended treatment for truncal varicose veins. However, a disadvantage of thermal techniques is that it requires the administration of tumescent anaesthesia, which can be uncomfortable. Non-thermal, non-tumescent techniques, such as mechanochemical ablation (MOCA) have potential benefits. MOCA combines physical damage to endothelium using a rotating wire, with the infusion of a liquid sclerosant...
2016: Trials
Mark B Badrov, Sophie Lalande, T Dylan Olver, Neville Suskin, J Kevin Shoemaker
In response to acute physiological stress, the sympathetic nervous system modifies neural outflow through increased firing frequency of lower-threshold axons, recruitment of latent subpopulations of higher-threshold axons, and/or acute modifications of synaptic delays. Aging and coronary artery disease (CAD) often modify efferent muscle sympathetic nerve activity (MSNA). Therefore, we investigated whether CAD (n = 14; 61 ± 10 yr) and/or healthy aging without CAD (OH; n = 14; 59 ± 9 yr) modified these recruitment strategies that normally are observed in young healthy (YH; n = 14; 25 ± 3 yr) individuals...
October 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
Wei Guo, Wenyan Zheng, Mei Wang, Xiaohong Li, Yue Ma, Hongyan Dai
The genome sequences of Apple chlorotic leaf spot virus (ACLSV) isolates from three accessions of hawthorns (Crataegus pinnatifida) grown at Shenyang Agricultural University were determined using Illumina RNA-seq. To confirm the assembly data from the de novo sequencing, two ACLSV genomic sequences (SY01 and SY02) were sequenced using the Sanger method. The SY01 and SY02 sequences obtained with the Sanger method showed 99.5% and 99.7% nucleotide identity with the transcriptome data, respectively. The genome sequences of the hawthorn isolates SY01, SY02 and SY03 (GenBank accession nos...
2016: PloS One
Laurent Fauchier, Olivier Villejoubert, Nicolas Clementy, Anne Bernard, Bertrand Pierre, Denis Angoulvant, Fabrice Ivanes, Dominique Babuty, Gregory Yh Lip
BACKGROUND: Atrial fibrillation is associated with a higher mortality, but causes of death of atrial fibrillation patients and their specific predictors have been less well defined. We aimed to identify the causes of death among atrial fibrillation patients and secondly, clinical predictors for the different modes of deaths. METHODS: Patients diagnosed with atrial fibrillation in a four-hospital institution between 2000 and 2010 were identified. During a follow-up of 929±1082 days (median 456, interquartile 10-1584), 1253 deaths were recorded (yearly rate 5...
July 27, 2016: American Journal of Medicine
Tomohisa Nezu, Naohisa Hosomi, Gregory Yh Lip, Shiro Aoki, Ryo Shimomura, Hirofumi Maruyama, Yoshiki Yagita, Masayasu Matsumoto, Shotai Kobayashi
BACKGROUND: Few existing stroke registries allow for evaluation of stroke severity, stroke subtype and antithrombotic usage prior to stroke onset over a given time period. The present study aimed to elucidate temporal trends in initial presenting stroke severity, stroke subtype and prior antithrombotic use over a 12-year period in a Japanese multicenter stroke registry. METHODS AND RESULTS: We included 71,017 acute ischemic stroke patients (72±12 years old; 27,445 women) from the Japan Standard Stroke Registry Study (JSSRS) who were admitted to 94 hospitals between 2001 and 2012...
August 25, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
L Huang, Z J Yin, Y F Feng, X D Zhang, T Wu, Y Y Ding, P F Ye, K Fu, M Q Zhang
Litter size affects profitability in the swine industry. Mammalian ovaries play important roles during reproduction, including ovulation and hormone secretion, which are tightly regulated by specific microRNAs (miRNAs). In this study, we investigated the effects of specific miRNAs on porcine litter size. We compared the ovarian miRNAs of Yorkshire pigs with high (YH) and low (YL) litter sizes using Solexa sequencing technology. We identified 327 and 320 miRNAs in the ovaries of YH and YL pigs respectively. A total of 297 miRNAs were co-expressed; 30 and 23 miRNAs respectively were specifically expressed in the two libraries...
October 2016: Animal Genetics
Vinita Gupta, Michael E Lassman, Thomas McAvoy, Anita Yh Lee, Derek L Chappell, Omar F Laterza
BACKGROUND: For quantitative immunoaffinity IA-LC-MS, the utility of antibodies has been demonstrated many times but the utility of aptamers as affinity reagents is unproven. METHODS: Immunoaffinity reagents including a monoclonal antibody and an aptamer were coupled to magnetic beads and used as part of an enrichment strategy for PCSK9 quantitation in plasma. RESULTS: With limited method development, we have established a comparison of an anti-PCSK9 aptamer with an anti-PCSK9 monoclonal antibody...
July 11, 2016: Bioanalysis
Suporn Chuncharunee, Raymond Wong, Ponlapat Rojnuckarin, Cheng-Shyong Chang, Kian Meng Chang, Meng-Yao Lu, Wen-Li Hwang, Liang Piu Koh, Tsai-Yun Chen, Anskar Yh Leung, Lalita Norasetthada, Shih-Chung Wang, Ming-Chih Chang, Kang-Hsi Wu, Surapol Issaragrisil
Due to the unavailability of horse antithymocyte globulin (ATG) in many markets worldwide, patients with severe aplastic anemia (SAA) are limited to the use of rabbit ATG. We aimed to analyze hematologic response and overall survival (OS) of Asian patients treated with rabbit ATG as first-line therapy of SAA. We retrospectively reviewed the medical records of 97 consecutive patients who received rabbit ATG as first-line treatment of SAA from 2006 to 2012 at centers in four Asian countries. The primary endpoint was 6- and 12-month overall response rates (ORR) for patients receiving rabbit ATG within the recommended dose range (2...
October 2016: International Journal of Hematology
Stephanie C Chen, Scott Yh Kim
BACKGROUND/AIMS: Standard of care pragmatic clinical trials that compare treatments already in use could improve care and reduce costs, but there is considerable debate about the research risks of standard of care pragmatic clinical trials and how to apply informed consent regulations to such trials. We sought to develop a framework integrating the insights from opposing sides of the debate. METHODS: We developed a formal risk-benefit analysis framework for standard of care pragmatic clinical trials and then applied it to key provisions of the US federal regulations...
June 30, 2016: Clinical Trials: Journal of the Society for Clinical Trials
Yang Wu, Gopu Sriram, Amr S Fawzy, Jerry Yh Fuh, Vinicius Rosa, Tong Cao, Yoke San Wong
Biological function of adherent cells depends on the cell-cell and cell-matrix interactions in three-dimensional space. To understand the behavior of cells in 3D environment and their interactions with neighboring cells and matrix requires 3D culture systems. Here, we present a novel 3D cell carrier scaffold that provides an environment for routine 3D cell growth in vitro We have developed thin, mechanically stable electrohydrodynamic jet (E-jet) 3D printed polycaprolactone and polycaprolactone/Chitosan macroporous scaffolds with precise fiber orientation for basic 3D cell culture application...
August 2016: Journal of Biomaterials Applications
Anjali Sivaramakrishnan, Lenore Tahara-Eckl, Sangeetha Madhavan
Transcranial magnetic stimulation (TMS) is a type of noninvasive brain stimulation used to study corticomotor excitability of the intact and injured brain. Identification of muscle representations in the motor cortex is typically done using a procedure called 'hotspotting', which involves establishing the optimal location on the scalp that evokes a maximum TMS response with minimum stimulator intensity. The purpose of this study was to report the hotspot locations for the tibialis anterior (TA) muscle representation in the motor cortex of healthy and post stroke individuals...
August 3, 2016: Neuroscience Letters
Xiaohu Fan, Bryan G Hughes, Mohammad A M Ali, Brandon Y H Chan, Katherine Launier, Richard Schulz
Cardiomyocyte dedifferentiation may be an important source of proliferating cardiomyocytes facilitating cardiac repair. Cardiomyocyte dedifferentiation and proliferation induced by oncostatin-M (OSM) is characterized by sarcomere degeneration. However, the mechanism underlying sarcomere degeneration remains unclear. We hypothesized that this process may involve matrix metalloproteinase-2 (MMP-2), a key protease localized at the sarcomere in cardiomyocytes. We tested the hypothesis that MMP-2 is involved in the sarcomere degeneration that characterizes cardiomyocyte dedifferentiation...
July 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
Andrei Vovk, Chad Gu, Michael G Opferman, Larisa E Kapinos, Roderick Yh Lim, Rob D Coalson, David Jasnow, Anton Zilman
Nuclear Pore Complexes (NPCs) are key cellular transporter that control nucleocytoplasmic transport in eukaryotic cells, but its transport mechanism is still not understood. The centerpiece of NPC transport is the assembly of intrinsically disordered polypeptides, known as FG nucleoporins, lining its passageway. Their conformations and collective dynamics during transport are difficult to assess in vivo. In vitro investigations provide partially conflicting results, lending support to different models of transport, which invoke various conformational transitions of the FG nucleoporins induced by the cargo-carrying transport proteins...
2016: ELife
Lynette Isabella Ochola-Oyier, John Okombo, Njoroge Wagatua, Jacob Ochieng, Kevin K Tetteh, Greg Fegan, Philip Bejon, Kevin Marsh
BACKGROUND: Plasmodium falciparum merozoite antigens elicit antibody responses in malaria-endemic populations, some of which are clinically protective, which is one of the reasons why merozoite antigens are the focus of malaria vaccine development efforts. Polymorphisms in several merozoite antigen-encoding genes are thought to arise as a result of selection by the human immune system. METHODS: The allele frequency distribution of 15 merozoite antigens over a two-year period, 2007 and 2008, was examined in parasites obtained from children with uncomplicated malaria...
2016: Malaria Journal
Gregory Y H Lip, Benjamin J Wrigley, Ron Pisters
No abstract text is available yet for this article.
2016: Cochrane Database of Systematic Reviews
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