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https://www.readbyqxmd.com/read/28739369/genomic-regression-of-claw-keratin-taste-receptor-and-light-associated-genes-provides-insights-into-biology-and-evolutionary-origins-of-snakes
#1
Christopher A Emerling
Regressive evolution of anatomical traits often corresponds with the regression of genomic loci underlying such characters. As such, studying patterns of gene loss can be instrumental in addressing questions of gene function, resolving conflicting results from anatomical studies, and understanding the evolutionary history of clades. The evolutionary origins of snakes involved the regression of a number of anatomical traits, including limbs, taste buds and the visual system, and by analyzing serpent genomes, I was able to test three hypotheses associated with the regression of these features...
July 21, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28738586/development-of-a-solid-phase-extraction-method-with-simple-mekc-uv-analysis-for-simultaneous-detection-of-indole-metabolites-in-human-urine-after-administration-of-indole-dietary-supplement
#2
Apichai Phonchai, Prapin Wilairat, Rattikan Chantiwas
This work presents the development of a solid phase extraction method with simple MEKC-UV analysis for the simultaneous determination of indole-3-carbinol (I3C) and its metabolites (3, 3'-diindolylmethane (DIM), indole-3-carboxaldehyde (I3CAL), indole-3-acetonitrile (I3A)) in human urine after oral administration of an indole dietary supplement. Solid phase extraction (SPE) method was applied for the first time for simultaneous analysis of these indole metabolites. The MEKC separation method was developed in a previous work...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28731696/tuning-nonradiative-lifetimes-via-molecular-aggregation
#3
Alan Celestino, Alexander Eisfeld
We show that molecular aggregation can strongly influence the nonradiative decay (NRD) lifetime of an electronic excitation. As a demonstrative example, we consider a transition-dipole-dipole-interacting dimer whose monomers have harmonic potential energy surfaces (PESs). Depending on the position of the NRD channel ($q_{\rm nr}$), we find that the NRD lifetime ($\tau_{\rm nr}^{\rm dim}$) can exhibit a completely different dependence on the intermolecular-interaction strength. We observe that (i) for $q_{\rm nr}$ near the Franck-Condon region, $\tau_{\rm nr}^{\rm dim}$ increases with the interaction strength; (ii) for $q_{\rm nr}$ near the minimum of the monomer excited PES, the intermolecular interaction has little influence on $\tau_{\rm nr}^{\rm dim}$; (iii) for $q_{\rm nr}$ near the classical turning point of the monomer nuclear dynamics, on the other side of the minimum, $\tau_{\rm nr}^{\rm dim}$ decreases with the interaction strength...
July 21, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28731695/how-rhodopsin-tunes-the-equilibrium-between-protonated-and-deprotonated-forms-of-the-retinal-chromophore
#4
Siri Camee van Keulen, Alicia Solano, Ursula Rothlisberger
Rhodopsin is a photoactive G-protein-coupled receptor (GPCR) that converts dim light into a signal for the brain, leading to eyesight. Full activation of this GPCR is achieved after passing through several steps of the protein's photoactivation pathway. Key events of rhodopsin activation are the initial cis-trans photoisomerisation of the covalently bound retinal moiety followed by conformational rearrangements and deprotonation of the chromophore's protonated Schiff base (PSB), which ultimately lead to full activation in the meta II state...
July 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28729748/on-flare-cme-characteristics-from-sun-to-earth-combining-remote-sensing-image-data-with-in-situ-measurements-supported-by-modeling
#5
Manuela Temmer, Julia K Thalmann, Karin Dissauer, Astrid M Veronig, Johannes Tschernitz, Jürgen Hinterreiter, Luciano Rodriguez
We analyze the well-observed flare and coronal mass ejection (CME) from 1 October 2011 (SOL2011-10-01T09:18) covering the complete chain of effects - from Sun to Earth - to better understand the dynamic evolution of the CME and its embedded magnetic field. We study in detail the solar surface and atmosphere associated with the flare and CME using the Solar Dynamics Observatory (SDO) and ground-based instruments. We also track the CME signature off-limb with combined extreme ultraviolet (EUV) and white-light data from the Solar Terrestrial Relations Observatory (STEREO)...
2017: Solar Physics
https://www.readbyqxmd.com/read/28727031/mammary-nutrient-uptake-in-multiparous-sows-fed-supplementary-arginine-during-gestation-and-lactation
#6
U Krogh, N Oksbjerg, A C Storm, T Feyera, P K Theil
Arginine is the precursor for the synthesis of nitric oxide and may increase mammary plasma flow (MPF), which may in turn increase mammary nutrient uptake. Quantifying mammary nutrient uptake improves our understanding of mammary nutrient metabolism and may potentially allow identification of limiting nutrients for colostrum and milk production. Thus, the objectives of the present study were 1) to study the impact of 25 g/d of crystalline Arg (ARG) on MPF and uptake of nutrients by the mammary glands compared with an isonitrogenous supply of Ala (51 g/d; control [CON]) fed to a total of 8 sows from d 30 of gestation until weaning on d 28 of lactation and 2) to quantify mammary nutrient uptake in late gestation and in early and at peak lactation...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28722319/immunophenotypic-aberrancies-in-acute-lymphoblastic-leukemia-from-282-iraqi-patients
#7
S D Jalal, N A S Al-Allawi, A A S Al Doski
INTRODUCTION: The identification of aberrancies in leukemia-associated immunophenotype (LAIP) of acute lymphoblastic leukemia (ALL) is quite important in the assessment of minimal residual disease (MRD). This study, the first from Iraq, aimed to assess the frequency and patterns of LAIP among Iraqi patients with ALL, to establish future strategies for evaluating MRD. METHODS: A total of 282 newly diagnosed Iraqi ALL cases were analyzed with six-parameter flow cytometry using a panel of 29 monoclonal antibodies...
July 18, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28718175/deployment-of-spatial-attention-to-a-structural-framework-exogenous-alerting-and-endogenous-goal-directed-factors
#8
Lisa N Jefferies, Vincent Di Lollo
The main question examined in the present work was whether spatial attention can be deployed to an appropriate structural framework not only endogenously when the framework is displayed continuously, as in previous work, but also exogenously, when it is displayed transiently 100 ms before the target. The results of five experiments answered that question in the negative. We found that the onset transient triggered by a brief presentation of the structural framework did enhance the response to the upcoming target...
July 17, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28716735/pupillary-measurements-and-anisocoria-in-chinese-preschoolers-3-4-years-of-age-screened-using-the-plusoptix-a12c
#9
Dan Huang, Xiaohan Zhang, Yue Wang, Hui Zhu, Hui Ding, Jing Bai, Ji Chen, Zhujun Fu, Zijin Wang, Xuejuan Chen, Hu Liu
PURPOSE: To evaluate the distribution of the pupil diameter and distance and the incidence of anisocoria in a screening setting for Chinese preschoolers 3-4 years of age. METHODS: This was a cross-sectional, population-based study conducted in children aged 3-4 years in Nanjing, China. Plusoptix photoscreening was conducted without cycloplegia. Additional assessments were conducted, including light reaction test, reevaluation for anisocoria (in dim and bright light), swinging-flashlight test, and cocaine test, if necessary...
July 14, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28713865/a-standardized-and-automated-method-of-perineuronal-net-analysis-using-wisteria-floribunda-agglutinin-staining-intensity
#10
Megan L Slaker, John H Harkness, Barbara A Sorg
Perineuronal nets (PNNs) are aggregations of extracellular matrix molecules that are critical for plasticity. Their altered development or changes during adulthood appear to contribute to a wide range of diseases/disorders of the brain. An increasing number of studies examining the contribution of PNN to various behaviors and types of plasticity have analyzed the fluorescence intensity of Wisteria floribunda agglutinin (WFA) as an indirect measure of the maturity of PNNs, with brighter WFA staining corresponding to a more mature PNN and dim WFA staining corresponding to an immature PNN...
December 2016: IBRO Reports
https://www.readbyqxmd.com/read/28713370/persistence-of-activated-and-adaptive-like-nk-cells-in-hiv-individuals-despite-2-years-of-suppressive-combination-antiretroviral-therapy
#11
Anna C Hearps, Paul A Agius, Jingling Zhou, Samantha Brunt, Mkunde Chachage, Thomas A Angelovich, Paul U Cameron, Michelle Giles, Patricia Price, Julian Elliott, Anthony Jaworowski
Innate immune dysfunction persists in HIV(+) individuals despite effective combination antiretroviral therapy (cART). We recently demonstrated that an adaptive-like CD56(dim) NK cell population lacking the signal transducing protein FcRγ is expanded in HIV(+) individuals. Here, we analyzed a cohort of HIV(+) men who have sex with men (MSM, n = 20) at baseline and following 6, 12, and 24 months of cART and compared them with uninfected MSM (n = 15) to investigate the impact of cART on NK cell dysfunction...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28713080/clinical-and-psychopathological-characteristics-of-the-autoagressive-behavior-in-patients-with-the-first-psychotic-episode-with-considering-circadian-rhythms
#12
Dmytro I Boiko, Lilia V Zhyvotovska, Grigorij T Sonnik, Andrij M Skrypnіkov
INTRODUCTION: The high rate of autoagressive action in patients with psychotic symptoms manifested during the beginning of active psychopharmatherapy, and they are often the reason for psychiatric help. The continuous growth of autoagressive behavior indicates the number of unsolved problems in clinical suicidology. AIM: The aim of this research was to explore the clinical and psychopathological characteristics of the autoagressive behavior in patients with the first psychotic episode with considering circadian rhythms...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28713070/the-role-of-cd200-and-cd43-expression-in-differential-diagnosis-between-chronic-lymphocytic-leukemia-and-mantle-cell-lymphoma
#13
Mesude Falay, Berna Afacan Öztürk, Kürşad Güneş, Yasin Kalpakçı, Simten Dağdaş, Funda Ceran, Gülsüm Özet
OBJECTIVE: Atypical CLL is most frequently confused with mantle cell lymphoma (MCL). Several markers may contribute to the diagnosis of CLL. However, there is no consensus on which markers are needed to be used in the flowcytometry for the diagnosis of CLL. The aim of the present study was to investigate the role of CD43 and CD200 markers in the differential diagnosis between CLL and MCL. MATERIALS AND METHODS: To address this issue, 339 consecutive patients with CLL and MCL evaluation of CD43, and CD200 expressions were included in the flowcytometry LPD panel but not in the Matutes scoring system...
July 17, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28712377/breed-of-cow-and-herd-productivity-affect-milk-nutrient-recovery-in-curd-and-cheese-yield-efficiency-and-daily-production
#14
G Stocco, C Cipolat-Gotet, V Gasparotto, A Cecchinato, G Bittante
Little is known about cheese-making efficiency at the individual cow level, so our objective was to study the effects of herd productivity, individual herd within productivity class and breed of cow within herd by producing, then analyzing, 508 model cheeses from the milk of 508 cows of six different breeds reared in 41 multi-breed herds classified into two productivity classes (high v. low). For each cow we obtained six milk composition traits; four milk nutrient (fat, protein, solids and energy) recovery traits (REC) in curd; three actual % cheese yield traits (%CY); two theoretical %CYs (fresh cheese and cheese solids) calculated from milk composition; two overall cheese-making efficiencies (% ratio of actual to theoretical %CYs); daily milk yield (dMY); and three actual daily cheese yield traits (dCY)...
July 17, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28711776/sleep-wake-profiles-and-circadian-rhythms-of-core-temperature-and-melatonin-in-young-people-with-affective-disorders
#15
Joanne S Carpenter, Rébecca Robillard, Daniel F Hermens, Sharon L Naismith, Christopher Gordon, Elizabeth M Scott, Ian B Hickie
While disturbances of the sleep-wake cycle are common in people with affective disorders, the characteristics of these disturbances differ greatly between individuals. This heterogeneity is likely to reflect multiple underlying pathophysiologies, with different perturbations in circadian systems contributing to the variation in sleep-wake cycle disturbances. Such disturbances may be particularly relevant in adolescents and young adults with affective disorders as circadian rhythms undergo considerable change during this key developmental period...
July 8, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28711265/feeding-a-concentrate-rich-in-rapeseed-oil-improves-fatty-acid-composition-and-flavor-in-norwegian-goat-milk
#16
R A Inglingstad, S Skeie, G E Vegarud, T G Devold, Y Chilliard, M Eknæs
Impaired quality due to a high content of free fatty acids (FFA) and off-flavors has caused challenges in the development of Norwegian goat milk products. The present study aimed to examine the effect of lipid-supplemented concentrates on milk fat content, fatty acid composition, FFA, lipoprotein lipase activity, sensory properties, and size of milk fat globules of goat milk. Thirty goats assigned to 3 experimental groups were fed different concentrates from 60 d in milk (DIM) until late lactation (230 DIM)...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28711262/genetic-and-nongenetic-factors-associated-with-milk-color-in-dairy-cows
#17
S Scarso, S McParland, G Visentin, D P Berry, A McDermott, M De Marchi
Milk color is one of the sensory properties that can influence consumer choice of one product over another and it influences the quality of processed dairy products. This study aims to quantify the cow-level genetic and nongenetic factors associated with bovine milk color traits. A total of 136,807 spectra from Irish commercial and research herds (with multiple breeds and crosses) were used. Milk lightness ( Lˆ*) red-green index ( aˆ*) and yellow-blue index ( bˆ*) were predicted for individual milk samples using only the mid-infrared spectrum of the milk sample...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28711260/short-communication-effects-of-an-immunomodulatory-feed-additive-on-phagocytic-capacity-of-neutrophils-and-relative-gene-expression-in-circulating-white-blood-cells-of-transition-holstein-cows
#18
Z H Wu, Y Yu, G M Alugongo, J X Xiao, J H Li, Y X Li, Y J Wang, S L Li, Z J Cao
High-producing dairy cows typically experience immunosuppression with dysregulated neutrophil function (e.g., compromised phagocytosis) during the transition period (3 wk before to 3 wk after parturition), which is causally associated with increased risk of infections. Enhanced neutrophil immune competence has significant bearing with the wellbeing of transition dairy cattle. In the current study, we investigated the effect of OmniGen-AF (OG; Phibro Animal Health, Quincy, IL) and its dose in modulation of neutrophil function of transition cows...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28711252/ethyl-cellulose-rumen-protected-methionine-enhances-performance-during-the-periparturient-period-and-early-lactation-in-holstein-dairy-cows
#19
F Batistel, J M Arroyo, A Bellingeri, L Wang, B Saremi, C Parys, E Trevisi, F C Cardoso, J J Loor
The onset of lactation in dairy cows is characterized by severe negative energy and protein balance. Increasing Met availability during this time may improve milk production, hepatic lipid metabolism, and immune function. The aim of this study was to evaluate the effect of feeding ethyl-cellulose rumen-protected methionine (RPM; Mepron, Evonik Nutrition and Care GmbH, Hanau-Wolfgang, Germany) on the performance of dairy cows during prepartum and early-lactation periods. Sixty multiparous Holstein cows were used in a block design and assigned to either a control or an ethyl-cellulose RPM diet...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28711245/feeding-of-palm-oil-fatty-acids-or-rapeseed-oil-throughout-lactation-effects-on-energy-status-body-composition-and-milk-production-in-norwegian-dairy-goats
#20
M Eknæs, Y Chilliard, K Hove, R A Inglingstad, L Bernard, H Volden
The objective of this experiment was to examine how supplements of rapeseed oil or palm oil fatty acids would affect milk production and composition, body lipid stores, and energy balance in 30 multiparous goats of Norwegian dairy goat breed. The experiment lasted 230 d, with 1 to 120 d in milk (DIM) for indoor feeding (P1), 120 to 200 DIM for mountain grazing (P2), and 200 to 230 DIM for indoor feeding (P3). Grass silage was fed according to appetite during indoor feeding periods. After an adjustment period (1-60 DIM) when the control diet was given to the goats, the animals were subdivided into 3 groups of 10 goats...
July 12, 2017: Journal of Dairy Science
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