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Dai Long Vu, Karolína Ranglová, Jan Hájek, Pavel Hrouzek
Quantification of selenated amino-acids currently relies on methods employing inductively coupled plasma mass spectrometry (ICP-MS). Although very accurate, these methods do not allow the simultaneous determination of standard amino-acids, hampering the comparison of the content of selenated versus non-selenated species such as methionine (Met) and selenomethionine (SeMet). This paper reports two approaches for the simultaneous quantification of Met and SeMet. In the first approach, standard enzymatic hydrolysis employing Protease XIV was applied for the preparation of samples...
March 9, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Hirotaka Iijima, Kanako Shimoura, Tomoki Aoyama, Masaki Takahashi
BACKGROUND: Stair climbing was suggested to be the first affected task in individuals with knee osteoarthritis (OA). RESEARCH QUESTION: This review aimed to identify consistent kinematic, kinetic, and spatiotemporal alterations of stair climbing exhibited by individuals with knee OA. METHODS: A literature search published until September 2017 was conducted in PubMed, PEDro, CINAHL, and Cochrane CENTRAL. Reviewer extracted data in accordance with the Cochrane Handbook...
March 8, 2018: Gait & Posture
Jiankui Feng, Erwei Yin, Jing Jin, Rami Saab, Ian Daly, Xingyu Wang, Dewen Hu, Andrzej Cichocki
The start of the cue is often used to initiate the feature window used to control motor imagery (MI)-based brain-computer interface (BCI) systems. However, the time latency during an MI period varies between trials for each participant. Fixing the starting time point of MI features can lead to decreased system performance in MI-based BCI systems. To address this issue, we propose a novel correlation-based time window selection (CTWS) algorithm for MI-based BCIs. Specifically, the optimized reference signals for each class were selected based on correlation analysis and performance evaluation...
March 2, 2018: Neural Networks: the Official Journal of the International Neural Network Society
Jieun Yoon, Akihiro Kanamori, Keisuke Fujii, Hiroko Isoda, Tomohiro Okura
PURPOSE: Maslinic acid (MA) is a component derived from a natural olive-based extract known to have pharmacological functions that include suppressing inflammation. This study examined how MA, in conjunction with whole-body vibration training (WBVT), can improve knee and muscle function in elderly women with knee osteoarthritis (OA). METHODS: The study was a double-blinded, placebo-controlled, randomized intervention study that enrolled individuals with knee pain...
2018: PloS One
Emily S Mohn, Hua J Kern, Edward Saltzman, Susan H Mitmesser, Diane L McKay
The long-term use of prescription and over-the-counter drugs can induce subclinical and clinically relevant micronutrient deficiencies, which may develop gradually over months or even years. Given the large number of medications currently available, the number of research studies examining potential drug-nutrient interactions is quite limited. A comprehensive, updated review of the potential drug-nutrient interactions with chronic use of the most often prescribed medications for commonly diagnosed conditions among the general U...
March 20, 2018: Pharmaceutics
Hidayat Hussain, Ivan R Green, Umair Shamraiz, Muhammad Saleem, Amin Badshah, Ghulam Abbas, Najeeb Ur Rehman, Muhammad Irshad
Glycyrrhetinic acids (GAs) viz., 18β-glycyrrhetinic acid and 18α-glycyrrhetinic acid, are oleanane-type triterpenes having a carboxylic acid group at C-30, and are extracted from the Chines herbal medicine licorice (Glycyrrhiza uralensis). Although the pharmacological properties of GAs have long been known, attention to them has greatly increased in recent times due to their cytotoxic activity. Areas Covered: This review represents the patents granted about natural and synthetic glycyrrhetinic acid analogs from January 2010 to December 2017, the advances made by research groups in conjunction with pharmaceutical companies in the discovery of new natural or synthetic glycyrrhetinic acid analogs...
March 20, 2018: Expert Opinion on Therapeutic Patents
Katherine E Queck, Angela Chapman, Leslie J Herzog, Tamara Shell-Martin, Anthony Burgess-Cassler, George David McClure
Periodontal disease in dogs is highly prevalent but can only be accurately diagnosed by performing an anesthetized oral examination with periodontal probing and dental radiography. In this study, 114 dogs had a visual awake examination of the oral cavity and were administered an oral-fluid thiol-detection test prior to undergoing a a full-mouth anesthetized oral examination and digital dental radiographs. The results show the visual awake examination underestimated the presence and severity of active periodontal disease...
March 20, 2018: Journal of the American Animal Hospital Association
Caixia Hou, Tapan Biswas, Oleg Tsodikov
Bacterial primase DnaG is an essential nucleic acid polymerase that generates primers for replication of chromosomal DNA. The mechanism of DnaG remains unclear, due to the paucity of structural information on DnaG in complexes with other replisome components. Here we report the first crystal structures of noncovalent DnaG-DNA complexes, obtained with the RNA polymerase domain of Mycobacterium tuberculosis DnaG and various DNA ligands. One structure, obtained with ds DNA, reveals interactions with DnaG as it slides on ds DNA and suggests how DnaG binds template for primer synthesis...
March 20, 2018: Biochemistry
Tamara L Sheldon, Chandini Sankaran
Between 1990 and 2015, Indonesia lost nearly 25 percent of its forests, largely due to intentional burning to clear land for cultivation of palm oil and timber plantations.1 The neighboring "victim countries" experienced severe deteriorations in air quality as a result of these fires. For example, Singapore experienced record air pollution levels in June of 2013 and again in September of 2015 as a result of the Indonesian forest fires.2 This air pollution is associated with increased incidences of upper respiratory tract infections, acute conjunctivitis, lung disease, asthma, bronchitis, emphysema, and pneumonia, among other ailments...
May 2017: American Economic Review
Alina M Suciu, Dana A Crisan, Bogdan D Procopet, Corina I Radu, Carmen Socaciu, Marcel V Tantau, Horia O Stefanescu, Mircea Grigorescu
BACKGROUND AND AIMS: Current management of alcoholic liver disease (ALD), especially for alcoholic hepatitis (AH) is still driven by liver biopsy. Therefore, the identification of novel and accurate noninvasive biomarkers for the diagnosis and assessment of severity is important. Metabolomics, because it unravels changes closest to the phenotype, may represent the key for novel biomarkers. The aim of this study was to identify and characterize potential metabolomic biomarkers for diagnosis, staging and severity assessment of ALD...
March 2018: Journal of Gastrointestinal and Liver Diseases: JGLD
Marlene Seegräber, Jerome Srour, Alexandra Walter, Macarena Knop, Andreas Wollenberg
Dupilumab is a new treatment option for patients with moderate-to-severe atopic dermatitis. It blocks IL-4/IL13-signaling and thereby inhibits receptor signaling downstream the JAK-STAT-pathway. Three of the main disease mechanisms of atopic dermatitis are affected by blocking this pathway; the decrease of skin barrier function, the class switch to IgE and the TH2-differentiation. Areas Covered: Dupilumab showed promising results in clinical trials of phase I-III. Clinical outcome parameters such as SCORAD, EASI, IGA and BSA improved with dupilumab...
March 20, 2018: Expert Review of Clinical Pharmacology
Jang Yoo, Bom Sahn Kim, Hai-Jeon Yoon
OBJECTIVE: We evaluated the significance of breast-specific gamma imaging (BSGI) for determination of upstaging to invasive cancer from preoperative ductal carcinoma in situ (DCIS). METHODS: This study enrolled 168 patients with 175 breast lesions diagnosed as DCIS on core-needle biopsy that subsequently underwent preoperative BSGI between September 2011 and October 2017. Both qualitative and quantitative analyses using tumor-to-normal background ratio (TNR) and coefficient of variation (COV) were performed, and the predictive significance for upstaging to invasive cancer was investigated...
March 19, 2018: Annals of Nuclear Medicine
Gleb G Mironov, Alexandre Bouzekri, Jessica Watson, Olga Loboda, Olga Ornatsky, Maxim V Berezovski
Mass cytometry is a novel cell-by-cell analysis technique, which uses elemental tags instead of fluorophores. Sample cells undergo rapid ionization in inductively coupled plasma and the ionized elemental tags are then analyzed by means of time-of-flight mass spectrometry. Benefits of the mass cytometry approach are in no need for compensation, the high number of detection channels (up to 100) and low background noise. In this work, we applied a biotinylated aptamer against human PTK7 receptor for characterization of positive (human acute lymphoblastic leukemia) and negative (human Burkitt's lymphoma) cells by a mass cytometry instrument...
March 20, 2018: Analytical and Bioanalytical Chemistry
Dhirendra Srivastava, Harpreet Singh, Sonal Mishra, Poonam Sharma, Pranav Kapoor, Lokesh Chandra
Facial asymmetry is an individualized characteristic and is commonly observed sub clinically in overall population. However, clinically significant facial asymmetry with associated morphologic, esthetic and stomatognathic problems warrant investigation of the underlying etiology and comprehensive clinical examination in conjunction with imaging studies for diagnosis, localization of asymmetry and treatment planning. The principal aim of this article is to present an invaluable insight into etiopathogenesis, myriad classifications and various systematic diagnostic approaches indispensable for formulation of treatment plan and appropriate management of facial asymmetry...
January 2018: Journal of Oral Biology and Craniofacial Research
Nan Chen, Xiaoyu Li, Navin K Chintala, Zachary E Tano, Prasad S Adusumilli
Uniform and strong expression of CD19, a cell surface antigen, on cells of B-cell lineage is unique to hematologic malignancies. Tumor-associated antigen (TAA) targets in solid tumors exhibit heterogeneity with regards to intensity and distribution, posing a challenge for chimeric antigen receptor (CAR) T-cell therapy. Novel CAR designs, such as dual TAA-targeted CARs, tandem CARs, and switchable CARs, in conjunction with inhibitory CARs, are being investigated as means to overcome antigen heterogeneity. In addition to heterogeneity in cancer-cell antigen expression, the key determinants for antitumor responses are CAR expression levels and affinity in T cells...
March 16, 2018: Current Opinion in Immunology
Ravindranath Tiruvoipati, David Pilcher, John Botha, Hergen Buscher, Robert Simister, Michael Bailey
Importance: Clinical studies investigating the effects of hypercapnia and hypercapnic acidosis in acute cerebral injury are limited. The studies performed so far have mainly focused on the outcomes in relation to the changes in partial pressure of carbon dioxide and pH in isolation and have not evaluated the effects of partial pressure of carbon dioxide and pH in conjunction. Objective: To review the association of compensated hypercapnia and hypercapnic acidosis during the first 24 hours of intensive care unit admission on hospital mortality in adult mechanically ventilated patients with cerebral injury...
March 19, 2018: JAMA Neurology
Ramin Mandegaran, Kanhaiyalal Agrawal, Sanjay Vijayanathan, Gopinath Gnanasegaran
OBJECTIVE: The purpose of this study was to assess the incremental value of technetium-99m-methyl diphosphonate (Tc-MDP) single-photon emission computed tomography/computed tomography (SPECT/CT) over Tc-MDP two-phase bone scan (TPBS) in the assessment of the patients with pain following knee arthroplasty. PATIENTS AND METHODS: Tc-MDP TPBS and Tc-MDP SPECT/CT were performed in 49 patients with knee pain after knee arthroplasty. The scans were reviewed by two readers (nuclear medicine physician and musculoskeletal radiologist)...
March 16, 2018: Nuclear Medicine Communications
Jo Frost, Fiona Robinson, Judi Hibberd
PURPOSE OF REVIEW: Dysphagia in adults arises from a range of causes including acquired neurological disorders and some cancers. Previous research has suggested that treatment using neuromuscular electrical stimulation (NMES) when used in conjunction with conventional therapy is effective. This review describes the recent literature and a small prospective case series carried out in the United Kingdom. This study contributed to support National Institute of Clinical Excellence (NICE) guidance for clinicians who wish to include NMES in a rehabilitation programme for dysphagic patients, specifically with reference to safety and the impact on swallowing function of this intervention...
March 16, 2018: Current Opinion in Otolaryngology & Head and Neck Surgery
Sankaran Sundaresan, Ali Ozel, Jari Kolehmainen
As multiscale structures are inherent in multiphase flows, constitutive models employed in conjunction with transport equations for momentum, species, and energy are scale dependent. We suggest that this scale dependency can be better quantified through deep learning techniques and formulation of transport equations for additional quantities such as drift velocity and analogies for species, energy, and momentum transfer. How one should incorporate interparticle forces, which arise through van der Waals interaction, dynamic liquid bridges between wet particles, and tribocharging, in multiscale models warrants further study...
March 19, 2018: Annual Review of Chemical and Biomolecular Engineering
Tiffany Guess, Hoyin Lai, Serenah E Smith, Linda Sircy, Kirsten Cunningham, David E Nelson, Erin E McClelland
The polysaccharide capsule of Cryptococcus neoformans is the primary virulence factor and one of the most commonly studied aspects of this pathogenic yeast. Capsule size can vary widely between strains, has the ability to grow rapidly when introduced to stressful or low nutrient conditions, and has been positively correlated with strain virulence. For these reasons, the size of the capsule is of great interest to C. neoformans researchers. The growth of the C. neoformans capsule is induced during phenotypic testing to help understand the effects of different treatments on the yeast or size differences between strains...
February 27, 2018: Journal of Visualized Experiments: JoVE
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