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https://www.readbyqxmd.com/read/28335726/analysis-of-hepatic-transcript-profile-and-plasma-lipid-profile-in-early-lactating-dairy-cows-fed-grape-seed-and-grape-marc-meal-extract
#1
Denise K Gessner, Anne Winkler, Christian Koch, Georg Dusel, Gerhard Liebisch, Robert Ringseis, Klaus Eder
BACKGROUND: It was recently reported that dairy cows fed a polyphenol-rich grape seed and grape marc meal extract (GSGME) during the transition period had an increased milk yield, but the underlying reasons remained unclear. As polyphenols exert a broad spectrum of metabolic effects, we hypothesized that feeding of GSGME influences metabolic pathways in the liver which could account for the positive effects of GSGME in dairy cows. In order to identify these pathways, we performed genome-wide transcript profiling in the liver and lipid profiling in plasma of dairy cows fed GSGME during the transition period at 1 week postpartum...
March 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28335326/tuning-the-emission-energy-of-chemically-doped-graphene-quantum-dots
#2
Noor-Ul-Ain, Martin O Eriksson, Susann Schmidt, M Asghar, Pin-Cheng Lin, Per Olof Holtz, Mikael Syväjärvi, G Reza Yazdi
Tuning the emission energy of graphene quantum dots (GQDs) and understanding the reason of tunability is essential for the GOD function in optoelectronic devices. Besides material-based challenges, the way to realize chemical doping and band gap tuning also pose a serious challenge. In this study, we tuned the emission energy of GQDs by substitutional doping using chlorine, nitrogen, boron, sodium, and potassium dopants in solution form. Photoluminescence data obtained from (Cl- and N-doped) GQDs and (B-, Na-, and K-doped) GQDs, respectively exhibited red- and blue-shift with respect to the photoluminescence of the undoped GQDs...
November 3, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333708/cost-effectiveness-of-antihypertensive-medication-exploring-race-and-sex-differences-using-data-from-the-reasons-for-geographic-and-racial-differences-in-stroke-study
#3
Gabriel S Tajeu, Stephen Mennemeyer, Nir Menachemi, Robert Weech-Maldonado, Meredith Kilgore
BACKGROUND: Antihypertensive medication decreases risk of cardiovascular disease (CVD) events in adults with hypertension. Although black adults have higher prevalence of hypertension and worse CVD outcomes compared with whites, limited attention has been given to the cost-effectiveness of antihypertensive medication for blacks. OBJECTIVE: To compare the cost-effectiveness of antihypertensive medication treatment versus no-treatment in white and black adults. RESEARCH DESIGN: We constructed a State Transition Model to assess the costs and quality-adjusted life-years (QALYs) associated with either antihypertensive medication treatment or no-treatment using data from the REasons for Geographic and Racial Differences in Stroke (REGARDS) study and published literature...
March 22, 2017: Medical Care
https://www.readbyqxmd.com/read/28333486/transitive-inference-in-humans-homo-sapiens-and-rhesus-macaques-macaca-mulatta-after-massed-training-of-the-last-two-list-items
#4
Greg Jensen, Yelda Alkan, Fabian Muñoz, Vincent P Ferrera, Herbert S Terrace
Transitive inference (TI) is a classic learning paradigm for which the relative contributions of experienced rewards and representation-based inference have been debated vigorously, particularly regarding the notion that animals are capable of logic and reasoning. Rhesus macaque subjects and human participants performed a TI task in which, prior to learning a 7-item list (ABCDEFG), a block of trials presented exclusively the pair FG. Contrary to the expectation of associative models, the high prior rate of reward for F did not disrupt subsequent learning of the entire list...
March 23, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28333462/lattice-solvent-effects-in-the-spin-crossover-of-an-fe-ii-based-material-the-key-role-of-intermolecular-interactions-between-solvent-molecules
#5
Maria Fumanal, Fernando Jiménez-Grávalos, Jordi Ribas-Arino, Sergi Vela
The spin transition of Fe(II) complexes is the subject of intensive synthetic and computational efforts. In this manuscript, we analyze the spin crossover (SCO) of [Fe(E-dpsp)2](2+) (1), which features a spin transition depending on the cocrystallizing solvent molecules. Whereas the use of acetone results in a hysteretic spin transition at ∼170 K, the use of propylene carbonate (PC) results in a permanent diamagnetic signal up to 300 K. By means of DFT+U+D2 calculations in the solid state of the material, we unravel the reasons for such different behavior...
March 23, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28333312/establishment-maintenance-and-functional-integrity-of-the-blood-testis-barrier-in-organotypic-cultures-of-fresh-and-frozen-thawed-prepubertal-mouse-testes
#6
C Rondanino, A Maouche, L Dumont, A Oblette, N Rives
STUDY QUESTION: Can the spatio-temporal formation of an intact blood-testis barrier (BTB), which is essential for the progression of spermatogenesis, be reproduced in cultures of fresh or frozen/thawed prepubertal mouse testes? SUMMARY ANSWER: Organotypic cultures allow the establishment and maintenance of major BTB components and the formation of a functional BTB in mouse testicular tissues. WHAT IS KNOWN ALREADY: In vitro maturation of prepubertal testicular tissues is a promising approach to restore fertility in adult survivors of childhood cancer...
March 17, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28329583/dermatologic-care-of-the-transgender-patient
#7
Timothy Hermosura Almazan, Filamer D Kabigting
Literature is limited regarding the medical and cosmetic dermatologic issues pertinent to transgender patients and the reasons why 19 transgender individuals seek care from dermatologists. Clinical management of this population has historically been limited to 20 mental health providers, endocrinologists, and select surgeons with expertise in sex reassignment surgery. The impact of hormonal 21 therapy on transgender skin has been well documented in endocrinology journals, but is underrepresented in dermatology 22 literature...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328968/c-reactive-protein-and-n-terminal-prohormone-brain-natriuretic-peptide-as-biomarkers-in-acute-exacerbations-of-copd-leading-to-hospitalizations
#8
Yu-Wei Roy Chen, Virginia Chen, Zsuzsanna Hollander, Jonathon A Leipsic, Cameron J Hague, Mari L DeMarco, J Mark FitzGerald, Bruce M McManus, Raymond T Ng, Don D Sin
There are currently no accepted and validated blood tests available for diagnosing acute exacerbations of chronic obstructive pulmonary disease (AECOPD). In this study, we sought to determine the discriminatory power of blood C-reactive protein (CRP) and N-terminal prohormone brain natriuretic peptide (NT-proBNP) in the diagnosis of AECOPD requiring hospitalizations. The study cohort consisted of 468 patients recruited in the COPD Rapid Transition Program who were hospitalized with a primary diagnosis of AECOPD, and 110 stable COPD patients who served as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28322180/operative-landscape-at-canadian-neurosurgery-residency-programs
#9
Michael K Tso, Ayoub Dakson, Syed Uzair Ahmed, Mark Bigder, Cameron Elliott, Daipayan Guha, Christian Iorio-Morin, Michelle Kameda-Smith, Pascal Lavergne, Serge Makarenko, Michael S Taccone, Bill Wang, Alexander Winkler-Schwartz, Tejas Sankar, Sean D Christie
Background Currently, the literature lacks reliable data regarding operative case volumes at Canadian neurosurgery residency programs. Our objective was to provide a snapshot of the operative landscape in Canadian neurosurgical training using the trainee-led Canadian Neurosurgery Research Collaborative. METHODS: Anonymized administrative operative data were gathered from each neurosurgery residency program from January 1, 2014, to December 31, 2014. Procedures were broadly classified into cranial, spine, peripheral nerve, and miscellaneous procedures...
March 21, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28320908/reaction-and-relaxation-at-surface-hotspots-using-molecular-dynamics-and-the-energy-grained-master-equation-to-describe-diamond-etching
#10
David R Glowacki, W J Rodgers, Robin Shannon, Struan H Robertson, Jeremy N Harvey
The extent to which vibrational energy transfer dynamics can impact reaction outcomes beyond the gas phase remains an active research question. Molecular dynamics (MD) simulations are the method of choice for investigating such questions; however, they can be extremely expensive, and therefore it is worth developing cheaper models that are capable of furnishing reasonable results. This paper has two primary aims. First, we investigate the competition between energy relaxation and reaction at 'hotspots' that form on the surface of diamond during the chemical vapour deposition process...
April 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28320180/mitochondrial-dysfunction-silent-killer-in-cerebral-ischemia
#11
REVIEW
Pramila Bakthavachalam, Prakash Srinivasan Timiri Shanmugam
Mitochondrial dysfunction aggravates ischemic neuronal injury through activation of various pathophysiological and molecular mechanisms. Ischemic neuronal injury is particularly intensified during reperfusion due to impairment of mitochondrial function. Mitochondrial mutilation instigates alterations in calcium homeostasis in neurons, which plays a pivotal role in the maintenance of normal neuronal function. Increase in intracellular calcium level in mitochondria triggers the opening of mitochondrial transition pore and over production of reactive oxygen species (ROS)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319978/patient-experience-the-new-heart-of-healthcare-leadership
#12
Jason A Wolf
In a healthcare world in which consumerism is no longer a question and value has claimed its place at center stage, leaders are called to think differently about how they operate and manage their organizations. Priorities are curving in new directions with shifts in policy, direction of dollars, and evolution of practice. At the center of this transition is an opportunity for healthcare leaders to recognize that patient experience is the new heart of healthcare leadership.To address quality, safety, service, cost, and population health outcomes, leaders must rethink how they understand and engage in experience efforts overall...
April 2017: Frontiers of Health Services Management
https://www.readbyqxmd.com/read/28318659/cardiovascular-and-general-health-status-of-adults-with-trisomy-21
#13
Samuel A Hayes, Shelby Kutty, Joshua Thomas, Joyce T Johnson, Anji T Yetman
BACKGROUND: Patients with Trisomy 21 are now living well into adulthood. Little data exists to assist the cardiologist in the care of these patients. We sought to examine the cardiac and general health status of adults with Trisomy 21 undergoing cardiac evaluation. METHODS & RESULTS: A retrospective review of all affected adults >21years followed at 2 tertiary care institutions was performed. Of 193 patients identified, median age was 31 (range 21.1-60.5) years...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28301726/is-the-bethe-salpeter-formalism-accurate-for-excitation-energies-comparisons-with-td-dft-caspt2-and-eom-ccsd
#14
Denis Jacquemin, Ivan Duchemin, Xavier Blase
Developing ab initio approaches able to provide accurate excited-state energies at a reasonable computational cost is one of the biggest challenges in theoretical chemistry. In that framework, the Bethe-Salpeter equation approach, combined with the GW exchange-correlation self-energy, which maintains the same scaling with system size as TD-DFT, has recently been the focus of a rapidly increasing number of applications in molecular chemistry. Using a recently proposed set encompassing excitation energies of many kinds [J...
March 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28301144/cinchona-alkaloid-squaramide-catalyzed-sulfa-michael-addition-reaction-mode-of-bifunctional-activation-and-origin-of-stereoinduction
#15
Jinlong Guo, Ming Wah Wong
The mechanism of enantioselective sulfa-Michael addition reaction catalyzed by a cinchona alkaloid-squaramide bifunctional organocatalyst was studied using density functional theory (DFT). Four possible modes of dual activation mechanism via hydrogen bonds were considered. Our study showed that Houk's bifunctional Brønsted acid-hydrogen bonding model, which works for cinchonidine or cinchona alkaloid-urea catalyzed sulfa-Michael addition reaction, also applies to the catalytic system under investigation. In addition, we examined the origin of the stereoselectivity by identifying stereocontrolling transition states...
March 16, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28300608/towards-a-reduced-meat-diet-mindset-and-motivation-of-young-vegetarians-low-medium-and-high-meat-eaters
#16
Joop de Boer, Hanna Schösler, Harry Aiking
This study provides insight into differences and similarities in the mindset and motivation of four dietary groups (young self-declared vegetarians, low, medium and high meat-eaters) to support the development of strategies for a general transition to a less meat-based diet. The paper highlights the value of the identity concept for our understanding of both vegetarians and meat eaters. The analysis involves a comparison of the four dietary groups focusing on the strength and the profile of their food-related motivation and their reasons for and against frequent meat eating...
March 12, 2017: Appetite
https://www.readbyqxmd.com/read/28300533/membranes-energetics-and-evolution-across-the-prokaryote-eukaryote-divide
#17
Michael Lynch, Georgi K Marinov
The evolution of the eukaryotic cell marked a profound moment in Earth's history, with most of the visible biota coming to rely on intracellular membrane-bound organelles. It has been suggested that this evolutionary transition was critically dependent on the movement of ATP synthesis from the cell surface to mitochondrial membranes and the resultant boost to the energetic capacity of eukaryotic cells. However, contrary to this hypothesis, numerous lines of evidence suggest that eukaryotes are no more bioenergetically efficient than prokaryotes...
March 16, 2017: ELife
https://www.readbyqxmd.com/read/28295671/coordination-of-n2-and-other-small-molecules-to-the-phosphorus-center-of-rpw-co-5-a-theoretical-study-on-the-janus-facets-of-the-stabilization-activation-problem
#18
Arturo Espinosa, Rainer Streubel
Bonding of neutral terminal phosphinidene tungsten(0) complexes stabilized by ligands bound to phosphorus (ligand-to-P) have been studied using a large testbed of predominantly N-ligands. Most complexes (1a-r,v-z and 2l) exhibit a pyramidal P centre with a formal single ligand-to-P bond order. Three ligand-to-P complexes (1s-u) exhibit planar sp2-hybridization of P and P,N bonds featuring double bond. All derivatives with C-ligands (1v,x-z) exhibit a ligand-to-P bond strength intermediate between the P-N single and double bonded species...
March 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28295348/functional-interplay-of-visual-sensitizing-and-screening-pigments-in-the-eyes-of-drosophila-and-other-red-eyed-dipteran-flies
#19
D G Stavenga, M F Wehling, G Belušič
Several fly species have distinctly red-coloured eyes, meaning that the screening pigments that provide a restricted angular sensitivity of the photoreceptors may perform poorly in the longer wavelength range. The functional reasons for the red transparency and possible negative visual effects of the spectral properties of the eye-colouring screening pigments are discussed within the context of the photochemistry, arrestin binding, and turnover of the visual pigments located in the various photoreceptor types...
March 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28290678/mo-mo-quintuple-bond-is-highly-reactive-in-h-h-c-h-and-o-h-%C3%AF-bond-cleavages-because-of-the-polarized-electronic-structure-in-transition-state
#20
Yue Chen, Shigeyoshi Sakaki
The recently reported high reactivity of the Mo-Mo quintuple bond of Mo2(N(∧)N)2 (1) {N(∧)N = μ-κ(2)-CH[N(2,6-iPr2C6H3)]2} in the H-H σ-bond cleavage was investigated. DFT calculations disclosed that the H-H σ-bond cleavage by 1 occurs with nearly no barrier to afford the cis-dihydride species followed by cis-trans isomerization to form the trans-dihydride product, which is consistent with the experimental result. The O-H and C-H bond cleavages by 1 were computationally predicted to occur with moderate (ΔG°(⧧) = 9...
March 14, 2017: Inorganic Chemistry
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