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https://www.readbyqxmd.com/read/28636281/aryl-and-heteroaryl-substituted-phenylalanines-as-ampa-receptor-ligands
#1
Ewa Szymańska, Paulina Chałupnik, Tommy N Johansen, Birgitte Nielsen, Ana Maria Cuñado Moral, Darryl S Pickering, Anna Więckowska, Katarzyna Kieć-Kononowicz
A series of racemic unnatural amino acids was rationally designed on the basis of recently published X-ray structures of the GluA2 LBD with bound phenylalanine-based antagonists. Twelve new diaryl- or aryl/heteroaryl-substituted phenylalanine derivatives were synthesized and evaluated in vitro in radioligand binding assays at native rat ionotropic glutamate receptors. The most interesting compound in this series, (RS)-2-amino-3-(3'-hydroxy-5-(1H-pyrazol-4-yl)-[1,1'-biphenyl]-3-yl)propanoic acid 7e, showed the binding affinity of 4...
June 21, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28636264/desmopressin-in-haemophilia-the-need-for-a-standardised-clinical-response-and-individualised-test-regimen
#2
S C M Stoof, L M Schütte, F W G Leebeek, M H Cnossen, M J H A Kruip
INTRODUCTION: Due to interindividual variation in desmopressin response, non-severe haemophilia A patients require desmopressin testing prior to therapeutic treatment. However, adequate response or frequency of blood sampling is not standardised in international guidelines. Consequently, various definitions and blood sampling protocols are currently applied. Interestingly, sustainability of desmopressin response is not incorporated into these definitions. AIM: To study desmopressin response rates in a cohort of non-severe haemophilia A patients using currently accepted desmopressin response definitions...
June 21, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28636234/association-of-recent-gay-related-stressful-events-and-emotional-distress-with-suicidal-behaviors-over-12%C3%A2-months-in-chinese-men-who-have-sex-with-men
#3
Liya Yu, Yanxia Li, Li Liu, Shuang Li, Jun Na, Xiaoxia An, Yan Zhou, Yuan Gu, Xuejuan Bi, Huijuan Mu, Rui Zhang, Wen Dong, Guowei Pan
INTRODUCTION: The study was designed to assess the association of gay-related stressful events (GRSEs) and emotional distress with suicidal behaviors over a 12-month period in Chinese men who have sex with men (MSM). METHODS: A total of 807 MSM were recruited using a respondent-driven sampling method from 4 cities in northeastern China. The GRSEs were measured using the Gay-related Stressful Life Events Scale, depression using the Self-rating Depression Scale, and anxiety using the Self-rating Anxiety Scale...
June 21, 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/28636208/a-phase-i-trial-of-prn1008-a-novel-reversible-covalent-inhibitor-of-bruton-s-tyrosine-kinase-in-healthy-volunteers
#4
Patrick F Smith, Janakan Krishnarajah, Philip A Nunn, Ron J Hill, Dane Karr, D Tam, Mohammad Masjedizadeh, Jens O Funk, Steve G Gourlay
AIM: To evaluate the safety, tolerability, and PK/PD of PRN1008, a novel BTK inhibitor, in healthy volunteers, and thus determine the dose range for future clinical studies. METHODS: This was a two-part randomized, placebo controlled study in healthy volunteers using a liquid formulation. Part I was a single ascending dose design with dose levels of 50 to 1200 mg (n=6 active, 2 placebo per cohort); Part II was a multiple ascending dose design, with dose regimens ranging from 300 mg to 900 mg daily, either qd or bd for 10 days...
June 21, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28636199/widespread-occurrence-and-potential-for-biodegradation-of-bioactive-contaminants-in-congaree-national-park-usa
#5
Paul M Bradley, William A Battaglin, Jimmy M Clark, Frank Henning, Michelle L Hladik, Luke R Iwanowicz, Celeste A Journey, Jeffrey W Riley, Kristin M Romanok
Organic contaminants with designed molecular bioactivity, such as pesticides and pharmaceuticals, originate from human and agricultural sources, occur frequently in surface waters, and threaten the structure and function of aquatic and terrestrial ecosystems. Congaree National Park in South Carolina (USA) is a vulnerable park unit due to its location downstream of multiple urban and agricultural contaminant sources and its hydrologic setting, being composed almost entirely of floodplain and aquatic environments...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28636165/a-feasibility-and-safety-study-of-intracoronary-hemodilution-during-primary-coronary-angioplasty-in-order-to-reduce-reperfusion-injury-in-myocardial-infarction
#6
Michael McGarvey, Omar Ali, M Bilal Iqbal, Charles Ilsley, Joyce Wong, Carlo Di Mario, Simon Redwood, Tiffany Patterson, Dudley J Pennell, Paula Rogers, Miles Dalby
OBJECTIVES: We designed a pilot study to evaluate safety and feasibility of an inexpensive and simple approach to intracoronary hemodilution during primary angioplasty (PPCI) to reduce reperfusion injury. INTRODUCTION: Early revascularization in acute myocardial infarction decreases infarct size and improves outcomes. However, abrupt restoration of coronary flow results in myocardial reperfusion injury and increased final infarct size. Dilution of coronary blood during revascularization may help reduce this damage...
June 21, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28635987/integrative-review-of-facility-interventions-to-manage-compassion-fatigue-in-oncology-nurses
#7
Dorien Wentzel, Petra Brysiewicz
PROBLEM IDENTIFICATION: Oncology nurses are regularly exposed to high-stress situations that may lead to compassion fatigue, and many institutions have implemented interventions to reduce burnout in nurses, but knowledge on the feasiblity, effectiveness, and nurses' experience of interventions is lacking.
. LITERATURE SEARCH: Electronic search of literature published from 1992-2015 was performed to evaluate in-facility interventions to manage compassion fatigue in oncology nurses...
May 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28635973/deconstructing-decisions-to-initiate-maintain-or-discontinue-adjuvant-endocrine-therapy-in-breast-cancer-survivors-a-mixed-methods-study
#8
Shirley M Bluethmann, Caitlin C Murphy, Jasmin A Tiro, Michelle A Mollica, Sally W Vernon, Leona Kay Bartholomew
PURPOSE/OBJECTIVES: Adjuvant endocrine therapy (AET) has been shown to improve survival in hormone receptor-positive breast cancer survivors, but as many as half do not complete recommended treatment. Management of medication-related side effects and engagement with providers are two potentially modifiable factors, but their associations with adherence are not well understood. The aims were to build on survey results to qualitatively explore survivors' experiences with prescribed AET to (a) describe appraisal and management of AET side effects and (b) deconstruct decisions to initiate, discontinue, or maintain AET...
May 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28635958/origin-of-fast-ion-diffusion-in-super-ionic-conductors
#9
Xingfeng He, Yizhou Zhu, Yifei Mo
Super-ionic conductor materials have great potential to enable novel technologies in energy storage and conversion. However, it is not yet understood why only a few materials can deliver exceptionally higher ionic conductivity than typical solids or how one can design fast ion conductors following simple principles. Using ab initio modelling, here we show that fast diffusion in super-ionic conductors does not occur through isolated ion hopping as is typical in solids, but instead proceeds through concerted migrations of multiple ions with low energy barriers...
June 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28635665/towards-a-uniform-metrological-assessment-of-grating-based-optical-fiber-sensors-from-refractometers-to-biosensors
#10
REVIEW
Francesco Chiavaioli, Carlos A J Gouveia, Pedro A S Jorge, Francesco Baldini
A metrological assessment of grating-based optical fiber sensors is proposed with the aim of providing an objective evaluation of the performance of this sensor category. Attention was focused on the most common parameters, used to describe the performance of both optical refractometers and biosensors, which encompassed sensitivity, with a distinction between volume or bulk sensitivity and surface sensitivity, resolution, response time, limit of detection, specificity (or selectivity), reusability (or regenerability) and some other parameters of generic interest, such as measurement uncertainty, accuracy, precision, stability, drift, repeatability and reproducibility...
June 21, 2017: Biosensors
https://www.readbyqxmd.com/read/28635624/effects-of-type-1-diabetes-risk-alleles-on-immune-cell-gene-expression
#11
REVIEW
Ramesh Ram, Grant Morahan
Genetic studies have identified 61 variants associated with the risk of developing Type 1 Diabetes (T1D). The functions of most of the non-HLA (Human Leukocyte Antigen) genetic variants remain unknown. We found that only 16 of these risk variants could potentially be linked to a protein-coding change. Therefore, we investigated whether these variants affected susceptibility by regulating changes in gene expression. To do so, we examined whole transcriptome profiles of 600 samples from the Type 1 Diabetes Genetics Consortium (T1DGC)...
June 21, 2017: Genes
https://www.readbyqxmd.com/read/28635591/camoptimus-a-tool-for-exploiting-complex-adaptive-evolution-to-optimize-experiments-and-processes-in-biotechnology
#12
Ayca Cankorur-Cetinkaya, Joao M L Dias, Jana Kludas, Nigel K H Slater, Juho Rousu, Stephen G Oliver, Duygu Dikicioglu
Multiple interacting factors affect the performance of engineered biological systems in synthetic biology projects. The complexity of these biological systems means that experimental design should often be treated as a multiparametric optimization problem. However, the available methodologies are either impractical, due to a combinatorial explosion in the number of experiments to be performed, or are inaccessible to most experimentalists due to the lack of publicly available, user-friendly software. Although evolutionary algorithms may be employed as alternative approaches to optimize experimental design, the lack of simple-to-use software again restricts their use to specialist practitioners...
June 21, 2017: Microbiology
https://www.readbyqxmd.com/read/28635585/the-meaning-and-experience-of-bereavement-support-a-qualitative-interview-study-of-bereaved-family-caregivers
#13
Emma Kirby, Katherine Kenny, Alex Broom, John MacArtney, Phillip Good
OBJECTIVE: Experiences of bereavement can be stressful and are frequently complicated by emotional, familial, and financial issues. Some-though not all-caregivers may benefit from bereavement support. While considered standard within palliative care services in Australia, bereavement support is not widely utilized by family caregivers. There is little research focused on the forms of bereavement support desired or required by family caregivers, how such care is viewed, and/or how bereavement support is experienced...
June 21, 2017: Palliative & Supportive Care
https://www.readbyqxmd.com/read/28635517/a-primer-for-oncoimmunology-immunooncology
#14
Brad Bolon, Famke Aeffner
Oncoimmunology (or immunooncology) is a burgeoning specialty of precision ("personalized") medicine designed to heighten the antitumor response of the immune system against molecules expressed excessively or only by tumor cells. This focus is necessary, as cancers are polyclonal tissues comprised of antigenically heterogeneous cells, the exact composition of which is shaped by the balance between antitumor immunity and tumor-promoting inflammation. Key targets include enhancing immune system (especially T cell) reactivity, inhibiting immune checkpoints, and promoting tumor cytolysis...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28635498/effect-of-age-related-hearing-loss-on-the-click-rate-induced-facilitation-of-acoustic-reflex-thresholds
#15
Vishakha Waman Rawool
OBJECTIVE: This investigation was designed to evaluate the effect of age-related hearing loss on the click-rate-induced improvement in the acoustic reflex thresholds. DESIGN: Case-control study. STUDY SAMPLE: Data from five different adults ear-groups (15 ears each) were included in the study: 1. Younger with normal hearing. 2. Older with normal hearing. 3. Older with mild high-frequency loss. 4. Older with moderate high-frequency loss. 5...
February 15, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28635406/concept-design-of-robotic-modules-for-needlescopic-surgery
#16
Shin Sen, Kanako Harada, Zackary Hewitt, Ekawahyu Susilo, Etsuko Kobayashi, Ichiro Sakuma
BACKGROUND: Many minimally invasive surgical procedures and assisting robotic systems have been developed to further minimize the number and size of incisions in the body surface. This paper presents a new idea combining the advantages of modular robotic surgery, single incision laparoscopic surgery and needlescopic surgery. MATERIAL AND METHODS: In the proposed concept, modules carrying therapeutic or diagnostic tools are inserted in the abdominal cavity from the navel as in single incision laparoscopic surgery and assembled to 3-mm needle shafts penetrating the abdominal wall...
February 23, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28635373/relative-risk-of-hemorrhage-during-pregnancy-in-patients-with-brain-arteriovenous-malformations
#17
Janneke van Beijnum, Tim Wilkinson, Heather J Whitaker, Johanna G van der Bom, Ale Algra, W Peter Vandertop, René van den Berg, Patrick A Brouwer, Gabriël Je Rinkel, L Jaap Kappelle, Rustam Al-Shahi Salman, Catharina Jm Klijn
Background It is unclear whether the risk of bleeding from brain arteriovenous malformations is higher during pregnancy, delivery, or puerperium. We compared occurrence of brain arteriovenous malformation hemorrhage in women during this period with occurrence of hemorrhage outside this period during their fertile years. Methods We included all women with ruptured brain arteriovenous malformations (16-41 years) from a retrospective database of patients with brain arteriovenous malformations in four Dutch university hospitals (n = 95) and from the population-based Scottish Audit of Intracranial Vascular Malformations (n = 44)...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28635368/efficacy-and-safety-of-autologous-cell-therapies-for-knee-cartilage-defects-autologous-stem-cells-chondrocytes-or-the-two-randomized-controlled-trial-design
#18
James B Richardson, Karina T Wright, Johanna Wales, Jan Herman Kuiper, Helen S McCarthy, Peter Gallacher, Paul E Harrison, Sally Roberts
AIM: The main aim of this trial is to test the safety and efficacy of autologous stromal/stem cells, chondrocytes or the two combined in the treatment of knee cartilage defects. PATIENTS & METHODS: Patients with symptomatic chondral/osteochondral defects will be randomized to cell therapy treatment with one of three cell populations (1:1:1). The primary efficacy outcome is a functional knee score (Lysholm) at 15 months post-treatment and the primary safety outcome is the incidence of adverse events...
June 21, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28635365/nucleosomal-organization-and-dna-base-composition-patterns
#19
Alicia García, Sara González, Francisco Antequera
Nucleosomes are the basic units of chromatin. They compact the genome inside the nucleus and regulate the access of proteins to DNA. In the yeast genome, most nucleosomes occupy well-defined positions, which are maintained under many different physiological situations and genetic backgrounds. Although several short sequence elements have been described that favour or reduce the affinity between histones and DNA, the extent to which the DNA sequence affects nucleosome positioning in the genomic context remains unclear...
June 21, 2017: Nucleus
https://www.readbyqxmd.com/read/28635351/assessing-the-quality-of-bereavement-care-after-perinatal-death-development-and-piloting-of-a-questionnaire-to-assess-parents-experiences
#20
Esther Aiyelaagbe, Rebecca E Scott, Victoria Holmes, Emma Lane, Alexander E P Heazell
Understanding parents' experience of care is essential to develop high-quality perinatal bereavement services. This study aimed at developing a questionnaire to identify parents' needs and record their experience of care. The patient experience questionnaire was developed by professionals and parents, and piloted in a tertiary maternity unit. Responses were received from 58 parents. Sensitivity and kindness of staff and time spent with their baby were ranked as 'very important' by 95% of parents. Care in these areas largely met their needs (90%), although 5% of respondents stated that partners could have been more involved...
June 21, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
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