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https://www.readbyqxmd.com/read/29334380/light-activated-chemical-probing-of-nucleobase-solvent-accessibility-inside-cells
#1
Chao Feng, Dalen Chan, Jojo Joseph, Mikko Muuronen, William H Coldren, Nan Dai, Ivan R Corrêa, Filipp Furche, Christopher M Hadad, Robert C Spitale
The discovery of functional RNAs that are critical for normal and disease physiology continues to expand at a breakneck pace. Many RNA functions are controlled by the formation of specific structures, and an understanding of each structural component is necessary to elucidate its function. Measuring solvent accessibility intracellularly with experimental ease is an unmet need in the field. Here, we present a novel method for probing nucleobase solvent accessibility, Light Activated Structural Examination of RNA (LASER)...
January 15, 2018: Nature Chemical Biology
https://www.readbyqxmd.com/read/29334185/physical-properties-of-implanted-porous-bioscaffolds-regulate-skin-repair-focusing-on-mechanical-and-structural-features
#2
REVIEW
Shumeng Jiang, Sabrina Cloud Li, Chenyu Huang, Barbara Pui Chan, Yanan Du
Porous bioscaffolds are applied to facilitate skin repair since the early 1990s, but a perfect regeneration outcome has yet to be achieved. Until now, most efforts have focused on modulating the chemical properties of bioscaffolds, while physical properties are traditionally overlooked. Recent advances in mechanobiology and mechanotherapy have highlighted the importance of biomaterials' physical properties in the regulation of cellular behaviors and regenerative processes. In skin repair, the mechanical and structural features of porous bioscaffolds are two major physical properties that determine therapeutic efficacy...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334169/impact-of-baseline-clinical-and-laboratory-features-on-the-risk-of-thrombosis-in-children-with-acute-lymphoblastic-leukemia-a-prospective-evaluation
#3
Uma H Athale, T Mizrahi, C Laverdière, T Nayiager, Y-L Delva, G Foster, L Thabane, M David, J-M Leclerc, A K C Chan
BACKGROUND: Children with acute lymphoblastic leukemia (ALL) have increased risk of thromboembolism (TE). However, the predictors of ALL-associated TE are as yet uncertain. OBJECTIVE: This exploratory, prospective cohort study evaluated the effects of clinical (age, gender, ALL risk group) and laboratory variables (hematological parameters, ABO blood group, inherited and acquired prothrombotic defects [PDs]) at diagnosis on the development of symptomatic TE (sTE) in children (aged 1 to ≤18) treated on the Dana-Farber Cancer Institute ALL 05-001 study...
January 15, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29334039/refractory-epilepsy-the-role-of-positron-emission-tomography
#4
Tommy L H Chan, Jonathan Romsa, David A Steven, Jorge G Burneo
RATIONALE: Presurgical localization of the epileptogenic focus is critical to successful surgery. Traditionally, localization of the epileptogenic focus depends on seizure semiology, scalp video-electroencephalography (vEEG), magnetic resonance imaging (MRI), neuropsychological assessment, and, when needed, intracranial EEG (iEEG). We aimed to explore the role of positron emission tomography (PET) in the presurgical evaluation of patients with refractory epilepsy. METHODS: A retrospective review was conducted on patients from London Health Sciences Centre (London, Ontario) with refractory epilepsy who underwent PET from September of 2011 to April of 2016...
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29333610/clinical-features-and-treatment-of-nonalcoholic-fatty-liver-disease-across-the-asia-pacific-region-the-go-asia-initiative
#5
W-K Chan, S Treeprasertsuk, K Imajo, A Nakajima, Y Seki, K Kasama, S Kakizaki, J-G Fan, M J Song, S K Yoon, Y-Y Dan, L Lesmana, K-Y Ho, K-L Goh, V W-S Wong
BACKGROUND: The Gut and Obesity Asia (GO ASIA) workgroup was formed to study the relationships between obesity and gastrointestinal diseases in the Asia Pacific region. AIM: To study factors associated with nonalcoholic steatohepatitis (NASH) and advanced fibrosis, and medical treatment of biopsy-proven nonalcoholic fatty liver disease (NAFLD) patients. METHODS: Retrospective study of biopsy-proven NAFLD patients from centres in the GO ASIA Workgroup...
January 14, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29333596/risk-of-adverse-events-associated-with-front-line-anti-myeloma-treatment-in-medicare-patients-with-multiple-myeloma
#6
Ying Chen, David R Lairson, Wenyaw Chan, Xianglin L Du
This study aims to examine the risks of adverse events associated with anti-multiple myeloma (MM) therapies in a large population-based cohort of elderly patients with MM. Patients diagnosed with advanced MM from 2005 through 2009 and receiving anti-MM therapy were identified from the Surveillance, Epidemiology, and End Results (SEER)-Medicare-linked data. We compared safety outcomes between novel agents (proteasome inhibitor (PI) and immunomodulatory drugs (IMiD)) and other therapies and between PI- or IMiD-based regimens and PI plus IMiD combination regimens...
January 15, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29333420/technique-for-orthotopic-liver-transplantation-in-cynomolgus-monkeys-macaca-fascicularis
#7
Kyo Won Lee, Chan Woo Cho, Hyojun Park, Gyu-Seong Choi, Jae Berm Park, Sung Joo Kim
Purpose: Recent studies investigating new strategies to modulate the immune system have utilized animal models of liver transplantation (LT). However, the anhepatic phase (AHP) remains a crucial problem in LT. The aim of the present study is to introduce a technique for successful orthotopic LT in cynomolgus monkeys using an early-reperfusion strategy. Methods: Orthotopicallo-LT was performed with seven donor/recipient pairs of cynomolgus monkeys. Results: In 2 recipients, liver allografts were perfused after suprahepatic inferior vena cava (SHIVC), portal vein (PV), and infrahepatic inferior vena cava (IHIVC) anastomosis...
January 2018: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29333418/low-dose-prednisolone-in-patients-with-paroxysmal-nocturnal-hemoglobinuria-and-inadequate-response-to-eculizumab
#8
Ji Young Moon, Deog-Yeon Jo, So Yeon Lee, Deok Yeong Kim, Seung-Woo Baek, Ik-Chan Song
No abstract text is available yet for this article.
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333403/treatment-outcomes-of-dose-attenuated-chop-chemotherapy-in-elderly-patients-with-peripheral-t-cell-lymphoma
#9
Eun-Ji Choi, Jung Yong Hong, Dok Hyun Yoon, Jihoon Kang, Chan-Sik Park, Jooryung Huh, Eun Jin Chae, Yoonse Lee, Jin-Sook Ryu, Cheolwon Suh
Background: While cyclophosphamide, doxorubicin, vincristine, and prednisolone (CHOP) is the most commonly used chemotherapeutic regimen for patients with peripheral T-cell lymphomas (PTCLs), elderly patients are more vulnerable to associated toxicities. We evaluated the efficacy and safety of dose-attenuated CHOP in elderly patients with PTCL. Methods: Patients with PTCL aged >70 years or 65-70-years with comorbidities were treated with dose-attenuated CHOP (cyclophosphamide: 562...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333354/novel-wavelet-based-segmentation-of-prostate-cbct-images-with-implanted-calypso-transponders
#10
Yingxia Liu, Ziad Saleh, Yulin Song, Maria Chan, Xiang Li, Chengyu Shi, Xin Qian, Xiaoli Tang
Segmentation of prostate Cone Beam CT (CBCT) images is an essential step towards real-time adaptive radiotherapy (ART). It is challenging for Calypso patients, as more artifacts generated by the beacon transponders are present on the images. We herein propose a novel wavelet-based segmentation algorithm for rectum, bladder, and prostate of CBCT images with implanted Calypso transponders. For a given CBCT, a Moving Window-Based Double Haar (MWDH) transformation is applied first to obtain the wavelet coefficients...
August 2017: International Journal of Medical Physics, Clinical Engineering and Radiation Oncology
https://www.readbyqxmd.com/read/29333111/diet-gut-microbiota-and-colorectal-cancer-prevention-a-review-of-potential-mechanisms-and-promising-targets-for-future-research
#11
Mingyang Song, Andrew T Chan
Diet plays an important role in the development of colorectal cancer. Emerging data have implicated the gut microbiota in colorectal cancer. Diet is a major determinant for the gut microbial structure and function. Therefore, it has been hypothesized that alterations in gut microbes and their metabolites may contribute to the influence of diet on the development of colorectal cancer. We review several major dietary factors that have been linked to gut microbiota and colorectal cancer, including major dietary patterns, fiber, red meat and sulfur, and obesity...
December 2017: Current Colorectal Cancer Reports
https://www.readbyqxmd.com/read/29332937/improving-immune-vascular-crosstalk-for-cancer-immunotherapy
#12
REVIEW
Yuhui Huang, Betty Y S Kim, Charles K Chan, Stephen M Hahn, Irving L Weissman, Wen Jiang
The vasculature of tumours is highly abnormal and dysfunctional. Consequently, immune effector cells have an impaired ability to penetrate solid tumours and often exhibit compromised functions. Normalization of the tumour vasculature can enhance tissue perfusion and improve immune effector cell infiltration, leading to immunotherapy potentiation. However, recent studies have demonstrated that the stimulation of immune cell functions can also help to normalize tumour vessels. In this Opinion article, we propose that the reciprocal regulation between tumour vascular normalization and immune reprogramming forms a reinforcing loop that reconditions the tumour immune microenvironment to induce durable antitumour immunity...
January 15, 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29332324/effects-of-macrolide-and-corticosteroid-in-neutrophilic-asthma-mouse-model
#13
Tai Joon An, Chin Kook Rhee, Ji Hye Kim, Young Rong Lee, Jin Young Chon, Chan Kwon Park, Hyoung Kyu Yoon
BACKGROUND: Asthma is a disease of chronic airway inflammation with heterogeneous features. Neutrophilic asthma is corticosteroid-insensitive asthma related to absence or suppression of TH2 process and increased TH1 and/or TH17 process. Macrolides are immunomodulatory drug that reduce airway inflammation, but their role in asthma is not fully known. The purpose of this study was to evaluate the role of macrolides in neutrophilic asthma and compare their effects with those of corticosteroids...
January 2018: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29332240/preperitoneal-closed-system-suction-drainage-after-totally-extraperitoneal-hernioplasty-in-the-prevention-of-early-seroma-formation-a-prospective-double-blind-randomised-controlled-trial
#14
J K M Fan, J Liu, K Chen, X Yang, X Xu, H K Choi, F S Y Chan, K W H Chiu, C M Lo
OBJECTIVES: Seroma is a virtually unavoidable early sequela after TEP hernioplasty. This randomised controlled trial evaluated the outcomes of preperitoneal closed-system suction drainage in laparoscopic totally extraperitoneal (TEP) hernioplasty for inguinal hernia. METHODS: Ninety patients aged 18-80 years who presented to our hospital between May 2016 and February 2017 with primary unilateral inguinal hernia were randomised into the preperitoneal drain and no-drain groups...
January 13, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29332127/proteome-profiling-of-developing-murine-lens-through-mass-spectrometry
#15
Shahid Y Khan, Muhammad Ali, Firoz Kabir, Santosh Renuse, Chan Hyun Na, C Conover Talbot, Sean F Hackett, S Amer Riazuddin
Purpose: We previously completed a comprehensive profile of the mouse lens transcriptome. Here, we investigate the proteome of the mouse lens through mass spectrometry-based protein sequencing at the same embryonic and postnatal time points. Methods: We extracted mouse lenses at embryonic day 15 (E15) and 18 (E18) and postnatal day 0 (P0), 3 (P3), 6 (P6), and 9 (P9). The lenses from each time point were preserved in three distinct pools to serve as biological replicates for each developmental stage...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29331993/increased-leisure-time-physical-activity-associated-with-lower-onset-of-diabetes-in-44%C3%A2-828-adults-with-impaired-fasting-glucose-a-population-based-prospective-cohort-study
#16
Xiang Qian Lao, Han-Bing Deng, Xudong Liu, Ta-Chien Chan, Zilong Zhang, Ly-Yun Chang, Eng-Kiong Yeoh, Tony Tam, Martin Chi Sang Wong, G Neil Thomas
AIMS: To evaluate the effects of habitual leisure-time physical activity (LTPA) on incident type 2 diabetes in a prospective cohort of Chinese adults with impaired fasting glucose (IFG). METHODS: 44 828 Chinese adults aged 20-80 years with newly detected IFG but free from cardiovascular and cerebrovascular disease were recruited and followed up from 1996 to 2014. Incident type 2 diabetes was identified by fasting plasma glucose ≥7 mmol/L. The participants were classified into four categories based on their self-reported weekly LTPA: inactive, low, moderate, or high...
January 13, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29331946/management-of-patients-on-antithrombotic-agents-undergoing-emergency-and-elective-endoscopy-joint-asian-pacific-association-of-gastroenterology-apage-and-asian-pacific-society-for-digestive-endoscopy-apsde-practice-guidelines
#17
Francis K L Chan, Khean-Lee Goh, Nageshwar Reddy, Kazuma Fujimoto, Khek Yu Ho, Seiji Hokimoto, Young-Hoon Jeong, Takanari Kitazono, Hong Sik Lee, Varocha Mahachai, Kelvin K F Tsoi, Ming-Shiang Wu, Bryan P Yan, Kentaro Sugano
This Guideline is a joint official statement of the Asian Pacific Association of Gastroenterology (APAGE) and the Asian Pacific Society for Digestive Endoscopy (APSDE). It was developed in response to the increasing use of antithrombotic agents (antiplatelet agents and anticoagulants) in patients undergoing gastrointestinal (GI) endoscopy in Asia. After reviewing current practice guidelines in Europe and the USA, the joint committee identified unmet needs, noticed inconsistencies, raised doubts about certain recommendations and recognised significant discrepancies in clinical practice between different regions...
January 13, 2018: Gut
https://www.readbyqxmd.com/read/29331867/classification-and-evolution-of-human-papillomavirus-genome-variants-alpha-5-hpv26-51-69-82-alpha-6-hpv30-53-56-66-alpha-11-hpv34-73-alpha-13-hpv54-and-alpha-3-hpv61
#18
Zigui Chen, Mark Schiffman, Rolando Herrero, Rob DeSalle, Kathryn Anastos, Michel Segondy, Vikrant V Sahasrabuddhe, Patti E Gravitt, Ann W Hsing, Paul K S Chan, Robert D Burk
HPV variants from the same type can be classified into lineages and sublineages based on the complete genome differences and the phylogenetic topologies. We examined nucleotide variations of twelve HPV types within the species Alpha-5 (HPV26, 51, 69, 82), Alpha-6 (HPV30, 53, 56, 66), Alpha-11 (HPV34, 73), Alpha-13 (HPV54) and Alpha-3 (HPV61) by analyzing 1432 partial sequences and 181 complete genomes from multiple geographic populations. The inter-lineage and inter-sublineage mean differences of HPV variants ranged between 0...
January 11, 2018: Virology
https://www.readbyqxmd.com/read/29331679/molecular-identification-of-forensically-important-calliphoridae-and-sarcophagidae-species-using-its2-nucleotide-sequences
#19
Ji Hye Park, Yu-Hoon Kim, Chan Seon Ham, Sang Eon Shin, Hyun Ju Lee, Kwang Soo Ko, Jinhyuk Choi, Gi Hoon Son, Seong Hwan Park
The application of insect evidence to forensic investigations is mainly based on the estimation of postmortem interval and the identification of insect species from samples that are collected from the crime scene. Due to the limited number of expert taxonomists, species identification is one of the major barriers for crime scene investigators to utilize forensic entomology. Therefore, the molecular identification of species, using mitochondrial cytochrome c oxidase subunit I (COI) gene, has been suggested as an alternative strategy...
January 3, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29331571/interdepartmental-imaging-protocol-for-clinically-based-three-dimensional-computed-tomography-can-provide-accurate-measurement-of-glenoid-version
#20
Connor L Zale, Gregory I Pace, Gregory S Lewis, John Chan, H Mike Kim
BACKGROUND: Conventional computed tomography (CT) is not accurate for glenoid version measurement. This study sought to examine the feasibility of an interdepartmental protocol implemented between orthopedic surgery and radiology departments for acquisition of anatomic axial CT images and to validate the glenoid version measured through such a protocol. MATERIALS AND METHODS: Data of 30 conventional CT scans of 10 normal and 20 osteoarthritic glenoids were transferred to clinical 3-dimensional imaging software by a radiology technician trained for the study...
January 10, 2018: Journal of Shoulder and Elbow Surgery
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