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Positive reciprocity

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https://www.readbyqxmd.com/read/28108396/serotonin-5-ht4-receptors-modulate-the-development-of-glutamatergic-input-to-the-dorsal-raphe-nucleus
#1
Angela Chen, Katherine D Hubbert, Pasha F Foroudi, Vivian F Lu, Skirmantas Janušonis
The dorsal raphe nucleus (DRN) is a major serotonin (5-hydroxytryptamine, 5-HT)-producing region in the central nervous system. It receives glutamatergic inputs from several brain regions, which are reciprocally modulated by serotonergic signals. We investigated whether serotonin 5-HT4 receptors (5-HT4Rs) play a role in the development of glutamatergic control of the DRN, with an emphasis on cortical inputs. Double-label immunohistochemistry and confocal microscopy were used to quantify vesicular glutamate transporter 1 (vGluT1)-immunoreactive terminals in the DRN of mice with a null-mutation in the 5-HT4R gene...
January 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28106907/subsequent-malignancies-among-long-term-survivors-of-hodgkin-lymphoma-and-non-hodgkin-lymphoma-a-pooled-analysis-of-german-cancer-registry-data-1990-2012
#2
Nadia Baras, Stefan Dahm, Jörg Haberland, Martin Janz, Katharina Emrich, Klaus Kraywinkel, Abdulgabar Salama
The increased risk of subsequent primary malignancies (SPM) in survivors of adult-onset Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL) remains a challenging clinical problem worldwide. The German cancer registry database, pooled from 14 federal states, was used to calculate the standardized incidence ratio (SIR) and excess absolute risk (EAR) of SPM in 128 587 patients registered with first primary HL/NHL between 1990 and 2012. Conversely, SIRs were also calculated for a subsequent HL/NHL following other first cancers...
January 20, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28100274/using-medical-specialty-and-selection-criteria-clusters-to-study-specialty-selection-by-israeli-medical-students
#3
Yoram G Weiss, Rachel Yaffa Zisk-Rony, Howard Tandeter, Uriel Elchalal, Alex Avidan, Josh E Schroeder, Charles Weissman
BACKGROUND: During their final year of medical school, Israeli students must consider which specialty to choose for residency. Based on the vocational counseling literature we presumed that choices are made by selecting from a cluster of related specialties while considering professional and socio-economic issues. METHODS: Questionnaires distributed to final-year medical students at two Israeli medical schools ascertained inclinations toward various medical specialties and the importance of various selection criteria...
January 18, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28096460/occupancy-of-the-zinc-binding-site-by-transition-metals-decreases-the-substrate-affinity-of-the-human-dopamine-transporter-by-an-allosteric-mechanism
#4
Yang Li, Felix P Mayer, Peter S Hasenhuetl, Verena Burtscher, Klaus Schicker, Harald H Sitte, Michael Freissmuth, Walter Sandtner
The human dopamine transporter (DAT) has a tetrahedral Zn(2+)-binding site. Zn(2+)-binding sites are also recognized by other first row transition metals. Excessive accumulation of manganese or of copper can lead to Parkinsonism due to dopamine deficiency. Accordingly, we examined the effect of Mn(2+), Co(2+), Ni(2+) and Cu(2+)on transport-associated currents through DAT and DAT-H193K, a mutant with a disrupted Zn(2+)-binding site. All transition metals - but Mn(2+) - modulated the transport cycle of wild type DAT with affinities in the low µM range...
January 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28095201/multisensory-bayesian-inference-depends-on-synapse-maturation-during-training-theoretical-analysis-and-neural-modeling-implementation
#5
Mauro Ursino, Cristiano Cuppini, Elisa Magosso
Recent theoretical and experimental studies suggest that in multisensory conditions, the brain performs a near-optimal Bayesian estimate of external events, giving more weight to the more reliable stimuli. However, the neural mechanisms responsible for this behavior, and its progressive maturation in a multisensory environment, are still insufficiently understood. The aim of this letter is to analyze this problem with a neural network model of audiovisual integration, based on probabilistic population coding-the idea that a population of neurons can encode probability functions to perform Bayesian inference...
January 17, 2017: Neural Computation
https://www.readbyqxmd.com/read/28094865/long-term-side-effects-on-the-temporomandibular-joints-and-orofacial-function-in-patients-with-obstructive-sleep-apnea-treated-with-a-mandibular-advancement-device
#6
Sofie W Knappe, Merete Bakke, Palle Svanholt, Arne Petersson, Liselotte Sonnesen
Patients with obstructive sleep apnea (OSA) in long-term treatment with a mandibular advancement device (MAD) to increase the upper airway space, may develop changes in the temporomandibular joint (TMJ) and the orofacial function due to the protruded jaw position during sleep. The aim was to investigate the influence of long-term MAD treatment on the TMJs, orofacial function and occlusion. This prospective study included 30 men and 13 women (median age 54) with OSA (Apnoea-Hypopnoea Index (AHI): 7-57). They were examined with the Nordic Orofacial Test Screening (NOT-S), the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and cone beam computed tomography (CBCT) of the TMJs...
January 17, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28093772/the-reciprocity-of-prosocial-behavior-and-positive-affect-in-daily-life
#7
Evelien Snippe, Bertus F Jeronimus, Marije Aan Het Rot, Elisabeth H Bos, Peter de Jonge, Marieke Wichers
OBJECTIVE: To examine whether prosocial behaviors help sustain a positive mood, we tested the dynamic reciprocal associations between prosocial behavior and positive affect (PA) in daily life. A second aim was to examine whether the personality traits neuroticism and extraversion moderate these associations. METHODS: The study included a community sample (N = 553). Participants completed an electronic diary assessing prosocial behavior and PA three times a day over 30 days...
January 17, 2017: Journal of Personality
https://www.readbyqxmd.com/read/28086876/fulfillment-of-administrative-and-professional-obligations-of-hospitals-and-mission-motivation-of-physicians
#8
Jeroen Trybou, Paul Gemmel, Sebastian Desmidt, Lieven Annemans
BACKGROUND: To be successful, hospitals must increasingly collaborate with their medical staff. One strategic tool that plays an important role is the mission statement of hospitals. The goal of this research was to study the relationship between the fulfillment of administrative and professional obligations of hospitals on physicians' motivation to contribute to the mission of the hospital. Furthermore the mediating role of the physicians' emotional attachment to the hospital and moderation effect of the exchange with the head physicians were considered...
January 13, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28080315/we-know-who-likes-us-but-not-who-competes-against-us
#9
Noah Eisenkraft, Hillary Anger Elfenbein, Shirli Kopelman
Research on dyadic meta-accuracy suggests that people can accurately judge how their acquaintances feel toward them. However, existing studies have focused exclusively on positive feelings, such as liking. We present the first research on dyadic meta-accuracy for competition, a common dynamic among work colleagues. Data from the sales staff at a car dealership and students working on project teams suggest that the prevailing model of dyadic meta-accuracy breaks down for judgments of competition. For liking, projecting one's own feelings promotes dyadic meta-accuracy because colleagues tend to reciprocate each other's liking...
January 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28073905/feeding-by-melanaphis-sacchari-hemiptera-aphididae-facilitates-use-of-sorghum-by-rhopalosiphum-padi-hemiptera-aphididae-but-reciprocal-effects-are-negative
#10
J P Michaud, Yun Zhang, Clint Bain
In the process of feeding, aphids modify the physiology of their host plants in species-specific ways, and plant responses to these aggressions are often genotype- or cultivar-specific. Thus, different aphid species sharing a host can influence each other's fitness via plant-mediated interactions, usually with negative and asymmetric impacts. Here, we show that feeding by the sugarcane aphid, Melanaphis sacchari Zehntner, can improve the suitability of sorghum as a host plant for the bird cherry-oat aphid, Rhopalosiphum padi L...
January 10, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28073403/arcanobacterium-wilhelmae-sp-nov-isolated-from-the-genital-tract-of-a-rhinoceros-rhinoceros-unicornis
#11
Osama Sammra, Jörg Rau, Jörn-Peter Wickhorst, Mazen Alssahen, Abdulwahed Ahmed Hassan, Christoph Lämmler, Peter Kämpfer, Stefanie P Glaeser, Hans-Jürgen Busse, Tanita Kleinhagauer, Tobias Knauf-Witzens, Ellen Prenger-Berninghoff, Amir Abdulmawjood, Günter Klein
AbstractA polyphasic taxonomic study was performed on an unidentified Arcanobacterium-like Gram-stain-positive bacterium isolated from the genital tract of a rhinoceros. Comparative 16S rRNA gene sequencing showed that the bacterium belonged to the genus Arcanobacterium and was most closely related to the type strains of Arcanobacterium canis (98.8 %), Arcanobacterium phocisimile (97.8 %), Arcanobacterium phocae (97.7%), Arcanobacterium haemolyticum (97.4 %), Arcanobacterium hippocoleae (96.6 %), Arcanobacterium pinnipediorum (96...
January 10, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28072881/reciprocal-symbiont-sharing-in-the-lodging-mutualism-between-walking-corals-and-sipunculans
#12
Momoko Igawa, Hiroki Hata, Makoto Kato
Solitary scleractinian corals of the genera Heterocyathus and Heteropsammia inhabit soft marine bottoms without attaching to hard substrata. The corallums of these genera contain a coiled cavity inhabited by a sipunculan that roams the seafloor, carrying the host coral with it. The coral serves as a sturdy shelter that protects the sipunculan from possible predators. At the same time, the sipunculan maintains the coral in an upright position on the soft bottom. This coral-sipunculan association is unique because two phylogenetically distant coral genera have developed convergent associations with sipunculans...
2017: PloS One
https://www.readbyqxmd.com/read/28071031/study-of-variation-of-tocochromanol-and-phytosterol-contents-in-black-and-yellow-seeds-of-brassica-napus-l-doubled-haploid-populations
#13
Teresa Cegielska-Taras, Małgorzata Nogala-Kałucka, Laurencja Szala, Aleksander Siger
BACKGROUND: In the study, an analysis of tocopherols, plastochomanol-8 and phytosterols was conducted using DH lines obtained from F1 hybrids of reciprocal crosses between yellow- and black-seeded lines. METHODS: The biological material for the study consisted of two DH populations of winter oilseed rape obtained from F1 hybrids of reciprocal crosses between two DH lines: yellow- and black-seeded. Seed color was determined using a ColorFlex spectrophotometer. Fat content was determined via pulsed NMR...
July 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28068214/paenibacillus-rhizoplanae-sp-nov-isolated-from-the-rhizosphere-of-zea-mays
#14
Peter Kämpfer, Hans-Jürgen Busse, John A McInroy, Chia-Hui Hu, Joseph W Kloepper, Stefanie P Glaeser
A Gram-positive staining, aerobic, endospore-forming bacterial strain, isolated from the rhizosphere of Zea mays was studied for its detailed taxonomic allocation. Based on 16S rRNA gene sequence similarity comparisons, strain JJ-64T was shown to be a member of the genus Paenibacillus, most closely related to the type strains of Paenibacillus silagei (99%) and Paenibacillus borealis (97.5%). The 16S rRNA gene sequence similarity to all other Paenibacillus species was ≤ 97.5%. DNA-DNA hybridization values to the type strains of P...
January 6, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28063214/reciprocal-regulation-between-%C3%AE-trcp-and-smurf1-suppresses-proliferative-capacity-of-liver-cancer-cells
#15
Yue Zhang, Wenhua Wang, Si Cai, Yan Chen, Qinwan Wang, Qiuhui Pan, Fenyong Sun, Jiayi Wang
We previously reported that both the ubiquitin E3 ligases βTrCP (beta-transducin repeat-containing E3 ubiquitin protein ligase) and Smurf1 (SMAD-specific E3 ubiquitin protein ligase 1) play similar antitumorigenic roles in liver cancer cells. However, whether and how they are reciprocally regulated remains elusive. Here, we show that βTrCP interacts with Smurf1 through the 7 × tryptophan (W) aspartic acid (D)(WD) 40 and the region homologous to the E6-AP carboxyl terminus (HECT) domains, which are the E3 ligase domains of βTrCP and Smurf1, respectively...
January 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28060443/depression-impacts-the-physiological-responsiveness-of-mother-daughter-dyads-during-social-interaction
#16
Marlissa C Amole, Jill M Cyranowski, Aidan G C Wright, Holly A Swartz
BACKGROUND: Maternal depression is associated with increased risk of psychiatric illness in offspring. While risk may relate to depressed mothers' difficulties regulating emotions in the context of interacting with offspring, physiological indicators of emotion regulation have rarely been examined during mother-child interactions-and never among mother-adolescent dyads in which both mother and adolescent have histories of major depressive disorder (MDD). METHODS: We examined changes in high-frequency heart rate variability (HF-HRV), an indicator of parasympathetic (vagal) function that has been related to depression, stress, social engagement, and emotion regulation, in 46 mother-daughter dyads (23 in which both mother and daughter had an MDD history and 23 never-depressed controls)...
January 6, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28059474/csa-promotes-xist-expression-to-regulate-human-trophoblast-cells-proliferation-and-invasion-through-mir-144-titin-axis
#17
Nanhui Yu, Ying Liang, Hong Zhu, Hongying Mo, Haiping Pei
In our previous study, we revealed that Cyclosporin A (CsA) could inhibit miR-144 expression to regulate proliferation and invasion of human trophoblast (HT) cells through miR-144 targeting titin. This partially demonstrated the mechanism by which CsA promotes titin expression to increase the vitality of HT cells. However, the mechanism by which CsA inhibits miR-144 expression remains to be investigated. Recently, the interaction between lncRNA and miRNA has been frequently reported to play major role in several biological processes...
January 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28059449/irx3-and-bmp2-regulate-mouse-mesenchymal-cell-chondrogenic-differentiation-in-both-a-sox9-dependent-and-independent-manner
#18
Yoshihiro Tamamura, Kenichi Katsube, Hisashi Mera, Maki Itokazu, Shigeyuki Wakitani
Sox9, a master regulator of cartilage development, controls the cell fate decision to differentiate from mesenchymal to chondrogenic cells. In addition, Sox9 regulates the proliferation and differentiation of chondrocytes, as well as the production of cartilage-specific proteoglycans. The existence of Sox9-independent mechanisms in cartilage development remains to be determined. Here, we attempted to identify genes involved in such putative mechanisms via microarray analysis using a mouse chondrogenic cell line, N1511...
January 6, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28059293/asymmetric-diffraction-from-two-component-optical-gratings-made-of-passive-and-lossy-materials
#19
Guanquan Liang, Ayman Abouraddy, Demetrios Christodoulides, Edwin L Thomas
Diffraction with asymmetric enhancement and suppression, and alternating contrast for symmetric diffraction orders is demonstrated from planar two-component optical gratings made of passive/lossy materials. Simulations agree well with the experimental diffraction pattern of the fabricated sample. Our fabrication approach uses simple, standard planar micro/nano lithography employing one photoresist and one dye. No 3D profiling is needed. The phenomena is due to the left-right asymmetric material distribution in the periodic grating, which gives rise to non-reciprocal light coupling for diffraction to the positive and negative orders...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28058767/do-group-dynamics-affect-colour-morph-clines-during-a-range-shift
#20
Lesley T Lancaster, Rachael Y Dudaniec, Bengt Hansson, Erik I Svensson
Species exhibiting colour-polymorphism are thought to have an ecological advantage at the landscape scale, because spatial segregation of alternatively-adapted ecotypes into diverse habitats can increase the total species' niche breadth and thus confer greater geographic range size. However, morph frequencies are also influenced by intra-populational processes such as frequency- or density-dependent social interactions. To identify how social feedback may affect clinal variation in morph frequencies, we investigated reciprocal interactions between morph-specific thermal tolerance, local climatic conditions, and social environments, in the context of a colour-morph frequency cline associated with a recent range expansion in blue-tailed damselflies (Ischnura elegans) in Sweden...
January 6, 2017: Journal of Evolutionary Biology
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