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https://www.readbyqxmd.com/read/29779207/density-functional-theory-and-ab-initio-computational-evidence-for-nitrosamine-photoperoxides-hammett-substituent-effects-in-the-photogeneration-of-the-nitrooxide-intermediate
#1
Edyta M Greer, Kitae Kwon
Little attention has been focused on diradical and zwitterionic photoperoxides formed from nitrosamine compounds. Here, an attempt is made to probe the electronic character of the nitrooxide intermediate formed in photochemical reactions with triplet oxygen (3 O2 ). Theoretical studies have been conducted to screen para-substituted phenyl nitrosamines. In particular, we find that electron-withdrawing substituents produce low-lying triplet nitrooxide diradicals. A clear electronic dependence in the S0 - T1 and S0 - S1 energy gaps of nitrooxides was found using Hammett plots...
May 20, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29779149/an-invitation-to-travel-in-an-interethnic-arena-listening-carefully-to-amerindian-leaders-speeches
#2
Rafaela Waddington Achatz, Danilo Silva Guimarães
In this article, we identify usual difficulties faced by Brazilian psychologists when dealing with Amerindian Peoples, concerning the systematic violence experienced by those Peoples, who have been suffering and fighting against a process of genocide and ethnocide. To identify those difficulties, we analysed speeches of Amerindian leaders of the State of São Paulo - Guarani Mbya, Pankararu, Xavante, Baniwa, Tupi - Guarani, Terena, Kaingang and Krenak - which were addressed to psychologists. Those speeches were delivered in events promoted by CRP-SP in 2010 and in the 2nd and 3rd Forums "The Amerindian presence in São Paulo" at the Institute of Psychology (USP), in 2014...
May 19, 2018: Integrative Psychological & Behavioral Science
https://www.readbyqxmd.com/read/29779128/why-do-testate-amoeba-optima-related-to-water-table-depth-vary
#3
Irina V Kurina, Hongkai Li
This study focusses on the ecology of testate amoeba species in peatlands of the southern taiga of Western Siberia. To estimate the influence of the trophic state of mires on species optima related to water table depth, a separate study of three calibration datasets including ombrotrophic, minerotrophic and the combined habitats was conducted. In the datasets obtained separately from ombrotrophic and minerotrophic mires, the water table depth was the main factor affecting testate amoeba assemblages. However, the trophic state (specifically pH and ash content) was more important factor in the combined dataset, including all of the studied mires...
May 19, 2018: Microbial Ecology
https://www.readbyqxmd.com/read/29779123/pulmonary-valve-replacement-after-repaired-tetralogy-of-fallot
#4
REVIEW
Hideki Tatewaki, Akira Shiose
In this review article, we describe pulmonary valve replacement (PVR) late after repaired Tetralogy of Fallot (TOF). Since the introduction of surgical intervention for patients with TOF in 1945, surgical management of TOF has dramatically improved early survival with mortality rates, less than 2-3%. However, the majority of these patients continue to experience residual right ventricular outflow tract pathology, most commonly pulmonary valve regurgitation (PR). The patients are generally asymptomatic during childhood and adolescence and, however, are at risk for severe PR later which can result in exercise intolerance, heart failure, arrhythmias, and sudden death...
May 19, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29779112/border-structure-of-intercalary-heterochromatin-bands-of-drosophila-melanogaster-polytene-chromosomes
#5
V A Khoroshko, T Yu Zykova, O O Popova, I F Zhimulev
The precise genomic localization of the borders of 62 intercalary heterochromatin bands in Drosophila polytene chromosomes was determined. A new type of bands containing chromatin of different states was identified. This type is a combination of the gray band and the intercalary heterochromatin band, creating a genetic structure that with a light microscope is identified as a continuous band. The border structure of such bands includes the coding regions of genes with ubiquitous activity.
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29779096/the-status-of-the-hemostasis-system-under-the-influence-of-proline-peptides-during-the-development-of-experimental-metabolic-syndrome
#6
M E Grigorjeva, N F Myasoedov, L A Lyapina, T Y Obergan, L A Andreeva
A comparative study of the influence of regulatory proline peptides Pro-Gly-Pro, Pro-Arg-Pro, Pro-Gly-Pro-Leu, and Arg-Pro-Gly-Pro on the state of the hemostasis system was carried out in an experiment on male rats with metabolic syndrome. Under these conditions, repeated (7-fold) intranasal administration of the peptides in a daily dose of 50 μg/kg resulted in an increase in the anticoagulant potential of the blood, namely, in an increase in the anticoagulant, fibrinolytic, and antiplatelet activity 20 h and 7 days after the last peptide injection...
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29779071/steady-state-perg-adaptation-a-conspicuous-component-of-response-variability-with-clinical-significance
#7
P Monsalve, S Ren, G Triolo, L Vazquez, A D Henderson, M Kostic, P Gordon, W J Feuer, V Porciatti
PURPOSE: To investigate within-test variability of the steady-state PERG (SS-PERG). METHODS: SS-PERGs were recorded in response to black-white horizontal gratings (1.6 cycles/deg, 98% contrast, 15.63 reversals/s, LED display, 25 deg square field, 800 cd/sqm mean luminance) using skin electrodes. PERG and noise (± reference) signals were averaged over 1024 epochs (~ 2.2 min) and Fourier analyzed to retrieve SS-PERG amplitude and phase. SS-PERGs were split into 16 partial averages (samples) of 64 epochs each, and corresponding amplitudes and phases combined in polar coordinates to assess their dispersion (within-test variability)...
May 19, 2018: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/29779042/combining-theoretical-and-experimental-data-to-decipher-cftr-3d-structures-and-functions
#8
Brice Hoffmann, Ahmad Elbahnsi, Pierre Lehn, Jean-Luc Décout, Fabio Pietrucci, Jean-Paul Mornon, Isabelle Callebaut
Cryo-electron microscopy (cryo-EM) has recently provided invaluable experimental data about the full-length cystic fibrosis transmembrane conductance regulator (CFTR) 3D structure. However, this experimental information deals with inactive states of the channel, either in an apo, quiescent conformation, in which nucleotide-binding domains (NBDs) are widely separated or in an ATP-bound, yet closed conformation. Here, we show that 3D structure models of the open and closed forms of the channel, now further supported by metadynamics simulations and by comparison with the cryo-EM data, could be used to gain some insights into critical features of the conformational transition toward active CFTR forms...
May 19, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29778994/heart-rate-changes-during-positive-pressure-ventilation-after-asphyxia-induced-bradycardia-in-a-porcine-model-of-neonatal-resuscitation
#9
Maria Liza Espinoza, Po-Yin Cheung, Tze-Fun Lee, Megan O'Reilly, Georg M Schmölzer
BACKGROUND: The Neonatal Resuscitation Program (NRP) states that if adequate positive pressure ventilation (PPV) was given for a low heart rate (HR), the infant's HR should increase within the first 15 s of PPV. OBJECTIVE: To assess changes in HR in piglets with asphyxia-induced bradycardia. METHODS: Term newborn piglets (n=30) were anaesthetised, intubated, instrumented and exposed to 50 min normocapnic hypoxia followed by asphyxia. Asphyxia was achieved by clamping the tube until severe bradycardia (defined as HR at <u><</u>25% of baseline)...
May 19, 2018: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29778993/risk-profile-for-drowning-deaths-in-children-in-the-indian-state-of-bihar-results-from-a-population-based-study
#10
Rakhi Dandona, G Anil Kumar, Sibin George, Amit Kumar, Lalit Dandona
BACKGROUND: We report on incidence of drowning deaths and related contextual factors in children from a population-based study in the Indian state of Bihar which estimated the causes of death using verbal autopsy (VA). METHODS: Interviews were conducted for deaths in 1-14 years population that occurred from January 2012 to March 2014 in 109 689 households (87.1% participation) in 1017 clusters representative of the state. The Population Health Metrics Research Consortium shortened VA questionnaire was used for interview and cause of death was assigned using the SmartVA automated algorithm...
May 19, 2018: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/29778990/health-out-of-foster-care-as-young-adults-age-out-of-foster-care-a-phenomenological-exploration-of-seeking-healthcare-services-after-aging-out-of-the-us-foster-care-system
#11
Jennifer L Collins, Rosalinda Jimenez, Laura J Thomas
Some adolescents in the United States who have been abused and/or neglected by caregivers and placed in permanent custody of the state leave, or "age out" of foster care at 18 years of age. Poor health outcomes among individuals who age out are notable, yet few studies describe the phenomenon of seeking healthcare services after leaving foster care. The investigators specifically queried the phenomenon of seeking healthcare services after foster care drawing from the Phenomenology of Practice approach...
May 17, 2018: Child Abuse & Neglect
https://www.readbyqxmd.com/read/29778978/tough-love-accommodating-intracellular-bacteria-through-directed-secretion-of-antimicrobial-peptides-during-the-nitrogen-fixing-symbiosis
#12
REVIEW
Christina Stonoha-Arther, Dong Wang
The symbiosis formed by nitrogen-fixing bacteria with plant hosts mainly in the legume family involves a very intimate interaction. Within the symbiotic organ (the nodule) the bacteria are fully internalized by the host cell to become an intracellular organelle surrounded by a host-derived membrane. This arrangement is probably necessary for the efficient provision of energy and the sequestration of free oxygen molecules, two conditions required for sustained nitrogen fixation. Recent advances made in model legume species, such as Medicago truncatula, are beginning to uncover the genetic components allowing rhizobia to access the host cytoplasm and establish chronic intracellular infections without overt detrimental effects...
May 17, 2018: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29778974/metabolic-plasticity-during-transition-to-na%C3%A3-ve-like-pluripotency-in-canine-embryo-derived-stem-cells
#13
I C Tobias, R R Isaac, J G Dierolf, R Khazaee, R C Cumming, D H Betts
Pluripotent stem cells (PSCs) have been described in naïve or primed pluripotent states. Domestic dogs are useful translational models in regenerative medicine, but their embryonic stem cells (cESCs) remain narrowly investigated. Primed-like cESCs expanded in the presence of leukemia inhibitory factor and fibroblast growth factor 2 (LIF-FGF2) acquire features of naïve pluripotency when exposed to chemical inhibitors and LIF (2iL). However, proliferation of cESCs is influenced by the pluripotent state and is comparatively slower than human or mouse PSCs...
May 16, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29778970/bottom-up-and-top-down-modulation-of-multisensory-integration
#14
REVIEW
Ilsong Choi, Jae-Yun Lee, Seung-Hee Lee
Sensory perception in the real world requires proper integration of different modality inputs. Process of multisensory integration is not uniform. It varies from individual to individual and changes at different behavioral states of the animal. What factors affect multisensory integration? How does the mammalian brain reconstruct a multisensory world at different states? Here, we summarize recent findings on bottom-up and top-down factors that can modulate sensory processing and multisensory integration. We discuss cortical circuits that are responsible for modulation of multisensory processing based on recent rodent studies...
May 17, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29778969/social-support-under-siege-an-analysis-of-forced-migration-among-women-from-the-democratic-republic-of-congo
#15
Karin Wachter, Lauren E Gulbas
In 2016, researchers conducted a qualitative study in a mid-sized town in the United States to address gaps in research and practice related to psychosocial consequences of forced migration among women. The loss of social support and its impacts on the well-being of women are rarely addressed in refugee resettlement policy or practice overwhelmingly concerned with economic self-sufficiency. The study sought to develop theory to explain how women (n = 27) who migrated from the Democratic Republic of the Congo recreate social support post-resettlement in the United States...
May 3, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29778957/how-can-we-value-an-environmental-asset-that-very-few-have-visited-or-heard-of-lessons-learned-from-applying-contingent-and-inferred-valuation-in-an-australian-wetlands-case-study
#16
Daniel Gregg, Sarah Ann Wheeler
To date, the majority of environmental assets studied in the economic valuation literature clearly have high amenity and recreational use values. However there are many cases where small, but nevertheless unique and important, ecosystems survive as islands amongst large areas of modified, productive, or urban, landscapes. Development encroaches on the landscape and as urban landscapes become more concentrated these types of conservation islands will become increasingly more important. Previous experience with economic valuation suggests that lower total values for smaller contributions to conservation are more liable to be swamped by survey and hypothetical bias measures...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778951/positive-influence-of-school-meals-on-food-consumption-in-brazil
#17
Nathália Tarossi Locatelli, Daniela Silva Canella, Daniel Henrique Bandoni
OBJECTIVE: To analyze the contribution of school meals to healthy food consumption among public school students in Brazil. METHODS: The data from the National Adolescent School-Based Health Survey (PeNSE), containing 86,660 ninth-grade students, were used. The students were asked about their consumption of school meals and of food in general over the preceeding seven days and on the day before the interview. A multinomial regression was performed to assess the relationship between the students' food consumption over the previous seven days and regular consumption of school meals (≥3 days/week), which were adjusted for sociodemographic factors...
March 23, 2018: Nutrition
https://www.readbyqxmd.com/read/29778945/self-administration-of-the-synthetic-cathinone-mpdv-enhances-reward-function-via-a-nicotinic-receptor-dependent-mechanism
#18
Jean R Geste, Marjory Pompilus, Marcelo Febo, Adriaan W Bruijnzeel
Methylenedioxypyrovalerone (MDPV) is an addictive synthetic drug with severe side effects. Previous studies have shown that MDPV has positive reinforcing properties. However, little is known about the effect of MDPV self-administration on the state of the brain reward system and the neuronal mechanisms by which MDPV mediates its effects. The goal of the present studies was to determine the effect of MDPV self-administration on reward function and the role of cholinergic neurotransmission in the reinforcing effects of MDPV...
May 9, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29778935/different-levels-of-pro-and-anti-inflammatory-cytokines-in-patients-with-unipolar-and-bipolar-depression
#19
Ruizhi Mao, Chen Zhang, Jun Chen, Guoqing Zhao, Rubai Zhou, Fan Wang, Jingjing Xu, Tao Yang, Yousong Su, Jia Huang, Zhiguo Wu, Lan Cao, Yong Wang, Yingyan Hu, Chengmei Yuan, Zhenghui Yi, Wu Hong, Zuowei Wang, Daihui Peng, Yiru Fang
BACKGROUND: Immune system dysregulation is critical in the physiopathology of major depressive disorder (MDD) and bipolar disorder (BD). However, it is unclear whether both diseases present the same inflammatory patterns during depressive episodes. We explored the differences in pro- and anti-inflammatory cytokines between unipolar and bipolar depression (BDD) and the trajectory of these cytokines after acute-phase treatment. METHODS: Sixty-four MDD patients, 61 BDD patients, and 62 healthy controls (HCs) were enrolled...
April 25, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29778931/monitoring-tool-usage-in-surgery-videos-using-boosted-convolutional-and-recurrent-neural-networks
#20
Hassan Al Hajj, Mathieu Lamard, Pierre-Henri Conze, Béatrice Cochener, Gwenolé Quellec
This paper investigates the automatic monitoring of tool usage during a surgery, with potential applications in report generation, surgical training and real-time decision support. Two surgeries are considered: cataract surgery, the most common surgical procedure, and cholecystectomy, one of the most common digestive surgeries. Tool usage is monitored in videos recorded either through a microscope (cataract surgery) or an endoscope (cholecystectomy). Following state-of-the-art video analysis solutions, each frame of the video is analyzed by convolutional neural networks (CNNs) whose outputs are fed to recurrent neural networks (RNNs) in order to take temporal relationships between events into account...
May 9, 2018: Medical Image Analysis
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