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https://www.readbyqxmd.com/read/28445044/highly-oxygenated-multifunctional-compounds-in-%C3%AE-pinene-secondary-organic-aerosol
#1
Xuan Zhang, Andrew T Lambe, Mary Alice Upshur, William A Brooks, Ariana Gray Be, Regan J Thomson, Franz M Geiger, Jason Douglas Surratt, Zhenfa Zhang, Avram Gold, Stephan Graf, Michael J Cubison, Michael Groessl, John T Jayne, Douglas R Worsnop, Manjula R Canagaratna
Highly oxygenated multifunctional organic compounds (HOMs) originating from biogenic emissions constitute a widespread source of organic aerosols in the pristine atmosphere. Yet, the molecular forms in which HOMs are present in the condensed phase upon gas-particle partitioning remain unclear. In this study, we show that highly oxygenated molecules that contain multiple peroxide functionalities are readily cationized by the attachment of Na(+) during electrospray ionization operated in the positive ion mode...
April 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28444912/whole-genome-sequencing-reveals-a-novel-deletion-variant-in-the-kit-gene-in-horses-with-white-spotted-coat-colour-phenotypes
#2
N Dürig, R Jude, H Holl, S A Brooks, C Lafayette, V Jagannathan, T Leeb
White spotting phenotypes in horses can range in severity from the common white markings up to completely white horses. EDNRB, KIT, MITF, PAX3 and TRPM1 represent known candidate genes for such phenotypes in horses. For the present study, we re-investigated a large horse family segregating a variable white spotting phenotype, for which conventional Sanger sequencing of the candidate genes' individual exons had failed to reveal the causative variant. We obtained whole genome sequence data from an affected horse and specifically searched for structural variants in the known candidate genes...
April 26, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28444866/new-insights-into-neurogenic-cyclic-motor-activity-in-the-isolated-guinea-pig-colon
#3
M Costa, L Wiklendt, L Keightley, S J H Brookes, P G Dinning, N J Spencer
BACKGROUND: The contents of the guinea pig distal colon consist of multiple pellets that move anally in a coordinated manner. This row of pellets results in continued distention of the colon. In this study, we have investigated quantitatively the features of the neurally dependent colonic motor patterns that are evoked by constant distension of the full length of guinea-pig colon. METHODS: Constant distension was applied to the excised guinea-pig by high-resolution manometry catheters or by a series of hooks...
April 26, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28444834/direct-and-indirect-effects-of-attention-and-visual-function-on-gait-impairment-in-parkinson-s-disease-influence-of-task-and-turning
#4
Samuel Stuart, Brook Galna, Louise S Delicato, Sue Lord, Lynn Rochester
Gait impairment is a core feature of Parkinson's disease (PD) which has been linked to cognitive and visual deficits, but interactions between these features are poorly understood. Monitoring saccades allows investigation of real-time cognitive and visual processes and their impact on gait when walking. This study explored; 1) saccade frequency when walking under different attentional manipulations of turning and dual-task; and 2) direct and indirect relationships between saccades, gait impairment, vision and attention...
April 26, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28444282/harvesting
#5
W Blair Brooks
No abstract text is available yet for this article.
April 25, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28444202/application-of-genomic-estimation-methods-of-inbreeding-and-population-structure-in-an-arabian-horse-herd
#6
Mohammed A Al Abri, Uta König von Borstel, Veronique Strecker, Samantha A Brooks
Horse breeders rely heavily on pedigrees for identification of ancestry in breeding stock. Inaccurate pedigrees may erroneously assign individuals to false lineages or breed memberships resulting in wrong estimates of inbreeding and coancestry. Moreover, discrepancies in pedigree records can lead breeders seeking to limit inbreeding into making misguided breeding decisions. Genome-wide SNPs provide a quantitative tool to aid in the resolution of lineage assignments and the calculation of genomic measures of relatedness...
April 21, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28443907/lanthanide-amide-catalyzed-one-pot-functionalization-of-isatins-synthesis-of-spiro-cyclopropan-1-3-oxindoles-and-2-oxoindolin-3-yl-phosphates
#7
Cheng Peng, Jiaojiao Zhai, Mingqiang Xue, Fan Xu
Lanthanide amide-catalyzed one-pot reaction of isatins, dialkyl phosphite, and activated alkenes was developed and a series of spiro[cyclopropan-1,3'-oxindoles] were obtained in moderate to excellent yields. The reaction is stereoselective and the two substituents at the 2 and 3-positions of the cyclopropane in the major product are in the trans configuration. A four-step mechanism involving the Pudovik reaction, Brook rearrangement, Michael addition, and intramolecular nucleophilic substitution is proposed, and an umpolung strategy was used in the process...
April 26, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28442939/sleep-disturbance-linked-to-suicidal-ideation-in-postural-orthostatic-tachycardia-syndrome
#8
Cathy Lynn Pederson, Jill Blettner Brook
OBJECTIVE: We investigated the prevalence of suicidal ideation in relationship with symptoms of sleep disruption in people with postural orthostatic tachycardia syndrome (POTS). METHODS: Online surveys (including the Pittsburgh Sleep Quality Index and the Suicide Behaviors Questionnaire - Revised) were completed by 705 POTS patients and 170 non-POTS controls. RESULTS: Poor sleep quality was reported in 98.4% of POTS patients with a calculated subjective sleep efficiency of 65...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/28442583/seletalisib-characterization-of-a-novel-potent-and-selective-inhibitor-of-pi3k%C3%AE
#9
Rodger A Allen, Daniel C Brookings, Mark J Powell, Jean Delgado, Lindsay K Shuttleworth, Mark Merriman, Ian J Fahy, Roohi Tewari, John P Silva, Louise J Healy, Gareth C G Davie, Breda Twomey, Rona M Cutler, Apoorva Kotian, Andrea Crosby, Gillian McCluskey, Gillian Watt, Andrew Payne
PI3Ks are key signaling enzymes regulating cellular survival, development and function. Expression of the PI3Kδ isoform is largely restricted to leukocytes and it plays a key role in immune cell development and function. Seletalisib is a novel small molecule inhibitor of PI3Kδ that was evaluated in biochemical assays, cellular assays of adaptive and innate immunity, and an in vivo rat model of inflammation. Our findings show that seletalisib is a potent, ATP-competitive and highly selective PI3Kδ inhibitor able to block AKT phosphorylation following activation of the BCR in a B-cell line...
April 25, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28441019/catalytic-enantioselective-%C3%AE-protonation-through-a-cooperative-activation-strategy
#10
Michael H Wang, David Barsoum, C Benjamin Schwamb, Daniel T Cohen, Brian C Goess, Matthias Riedrich, Audrey Chan, Brooks E Maki, Rama K Mishra, Karl A Scheidt
The NHC-catalyzed transformation of unsaturated aldehydes into saturated esters through an organocatalytic homoenolate process has been thoroughly studied. Leveraging a unique "Umpolung"-mediated β-protonation, this process has evolved from a test bed for homoenolate reactivity to a broader platform for asymmetric catalysis. Inspired by our success in using the β-protonation process to generate enals from ynals with good E/Z selectivity, our early studies found that an asymmetric variation of this reaction was not only feasible, but also adaptable to a kinetic resolution of secondary alcohols through NHC-catalyzed acylation...
April 25, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28439563/mechanism-of-vps4-hexamer-function-revealed-by-cryo-em
#11
Min Su, Emily Z Guo, Xinqiang Ding, Yan Li, Jeffrey T Tarrasch, Charles L Brooks, Zhaohui Xu, Georgios Skiniotis
Vps4 is a member of AAA(+) ATPase (adenosine triphosphatase associated with diverse cellular activities) that operates as an oligomer to disassemble ESCRT-III (endosomal sorting complex required for transport III) filaments, thereby catalyzing the final step in multiple ESCRT-dependent membrane remodeling events. We used electron cryo-microscopy to visualize oligomers of a hydrolysis-deficient Vps4 (vacuolar protein sorting-associated protein 4) mutant in the presence of adenosine 5'-triphosphate (ATP). We show that Vps4 subunits assemble into an asymmetric hexameric ring following an approximate helical path that sequentially stacks substrate-binding loops along the central pore...
April 2017: Science Advances
https://www.readbyqxmd.com/read/28438775/emergency-diagnosis-of-cancer-and-previous-general-practice-consultations-insights-from-linked-patient-survey-data
#12
Gary A Abel, Silvia C Mendonca, Sean McPhail, Yin Zhou, Lucy Elliss-Brookes, Georgios Lyratzopoulos
BACKGROUND: Emergency diagnosis of cancer is common and aetiologically complex. The proportion of emergency presenters who have consulted previously with relevant symptoms is uncertain. AIM: To examine how many patients with cancer, who were diagnosed as emergencies, have had previous primary care consultations with relevant symptoms; and among those, to examine how many had multiple consultations. DESIGN AND SETTING: Secondary analysis of patient survey data from the 2010 English Cancer Patient Experience Survey (CPES), previously linked to population-based data on diagnostic route...
April 24, 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28438729/gathering-opinions-on-depression-information-needs-and-preferences-samples-and-opinions-in-clinic-versus-web-based-surveys
#13
Matthew T Bernstein, John R Walker, Kathryn A Sexton, Alan Katz, Brooke E Beatie
BACKGROUND: There has been limited research on the information needs and preferences of the public concerning treatment for depression. Very little research is available comparing samples and opinions when recruitment for surveys is done over the Web as opposed to a personal invitation to complete a paper survey. OBJECTIVE: This study aimed to (1) to explore information needs and preferences among members of the public and (2) compare Clinic and Web samples on sample characteristics and survey findings...
April 24, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28437205/-she-would-be-flailing-around-distressed-the-critical-role-of-home-based-palliative-care-for-patients-with-advanced-cancer
#14
Brook A Calton, Nicole Thompson, Nancy Shepard, Redwing Keyssar, Kanan Patel, Virginia Dzul-Church, Helen Kao, Christine Ritchie, Michael W Rabow
BACKGROUND: Patients with advanced cancer experience significant symptoms, ineffective treatments, and hospice underutilization. Home-based palliative care (HBPC) may fill a service gap for patients who require intensive home management, but are not enrolled in hospice. Even as data emerge on the utilization impacts of HBPC, other impacts are not as well known. METHODS: We describe findings of a pilot project in HBPC, Community Bridges (CB), for patients with advanced cancer...
February 16, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28437007/simulating-biomolecules-festschrift-to-commemorate-the-60th-birthday-of-charles-l-brooks-iii
#15
Jonathan Hirst, Wonpil Im, Joan-Emma Shea
No abstract text is available yet for this article.
June 5, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28436300/ten-year-single-centre-experience-with-type-ii-endoleaks-intervention-versus-observation
#16
Ikram-Ul Haq, Arun Kelay, Meryl Davis, Jocelyn Brookes, Tara M Mastracci, Jason Constantinou
Our objective was to determine the relative merits of intervention or observation of type II endoleaks (T2Ls). A retrospective analysis was performed on 386 infra-renal endovascular aneurysm repair (IR-EVAR) patients from 2006 to 2015. Annual surveillance imaging of patients undergoing EVAR at our centre were analysed, and all endoleaks were subjected to a multidisciplinary team meeting for consideration and treatment. In the 10-year time frame, 386 patients (79.5±8.7 years) underwent an IR-EVAR. Eighty-one patients (21...
April 1, 2017: Vascular Medicine
https://www.readbyqxmd.com/read/28433876/maternal-responsivity-to-infants-in-the-high-chair-assessment-longitudinal-relations-with-toddler-outcomes-in-a-diverse-low-income-sample
#17
Colleen R O'Neal, Lynsey Weston, Jeanne Brooks-Gunn, Lisa J Berlin, Ranga Atapattu
Infant-parent interactions occur across many situations, yet most home-based assessments of parenting behaviors are conducted under conditions of low stress, such as free play. In this study, low-income mothers from the Early Head Start Research and Evaluation Project were observed at home interacting with their 14-month-olds in the mildly stressful "High Chair" assessment (n=1718 dyads). This methodological study tested whether High Chair maternal responsiveness and detachment predicted later toddler cognitive and emotion outcomes, over and above equivalent maternal predictors during free play...
April 20, 2017: Infant Behavior & Development
https://www.readbyqxmd.com/read/28432891/modification-of-an-existing-in%C3%A2-vitro-method-to-predict-relative-bioavailable-arsenic-in-soils
#18
Shane Whitacre, Nicholas Basta, Brooke Stevens, Valerie Hanley, Richard Anderson, Kirk Scheckel
The soil matrix can sequester arsenic (As) and reduces its exposure by soil ingestion. In vivo dosing studies and in vitro gastrointestinal (IVG) methods have been used to predict relative bioavailable (RBA) As. Originally, the Ohio State University (OSU-IVG) method predicted RBA As for soils exclusively from mining and smelting sites with a median of 5,636 mg As kg(-1). The objectives of the current study were to (i) evaluate the ability of the OSU-IVG method to predict RBA As for As contaminated soils with a wider range of As content and As contaminant sources, and (ii) evaluate a modified extraction procedure's ability to improve prediction of RBA As...
April 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28431844/health-care-associated-infections-studies-project-an-american-journal-of-infection-control-and-national-healthcare-safety-network-data-quality-collaboration
#19
Henrietta Smith, Janet E Brooks, Denise Leaptrot, Katherine Allen-Bridson, Angela Anttila, Cindy Gross, Joan N Hebden, Georganne Ryan, Eileen Scalise, Marc-Oliver Wright
This case study is part of a series centered on the Centers for Disease Control and Prevention's National Healthcare Safety Network's (NHSN) health care-associated infection (HAI) surveillance definitions. The intent of the case study series is to foster standardized application of the NHSN's HAI surveillance definitions among infection preventionists and accurate determination of HAI events. This specific case study focuses on the definitions found within the surgical site infection (SSI) protocol. It aims to reflect the real life and complex patient scenario surrounding a bloodstream infection that is secondary to an SSI and the application of the Present at the Time of Surgery event detail...
April 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28431376/trichobezoar-presenting-as-a-gastric-outlet-obstruction-a-case-report
#20
Eugene Nwankwo, Edward Daniele, Erin Woller, John Fitzwater, Thomas McGill, Steven E Brooks
INTRODUCTION: Rapunzel syndrome is a rare intestinal condition that starts with the ingestion of a trichobezoar. The condition is predominately found in females and can be associated with trichotillomania, or the compulsive urge to pull one's own hair out. There are less than 40 cases described in the literature with the prevention of recurrence aimed at psychological treatment. PRESENTATION OF CASE: The patient is a 7 year-old girl with a history of trichotillomania with trichophagia as a young child who presented with abdominal pain, nausea, and vomiting, consistent with a gastric outlet obstruction...
2017: International Journal of Surgery Case Reports
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