The present study investigated the comparability of two video-based tracking techniques, namely, Motion Energy Analysis and OpenPose, in the context of nonverbal synchrony research. Participants aged ...23–69 years held a 15-min unstructured conversation with a same-gender partner of the same generation. Each participant’s movements were quantified with two algorithms, which were separately submitted to a wavelet transform to assess synchrony between the partners. Wavelet coherence and information in the relative phase were used to measure the intensities and patterns of synchrony, respectively. As a benchmark of the test results, gender effects and correlation with the Big Five personality traits were examined. Irrespective of the tracking technique used, the results consistently illustrated gender effects: female dyads showed more synchrony than male dyads. Among the Big Five personality traits, only Extraversion was significantly associated with synchrony in either tracking technique. The gender effect remained significant in both the tracking techniques even when controlling for personality traits, indicating that both individual (i.e., personality) and social (i.e., gender) factors contribute to synchrony. The use of video-tracking techniques in the research on synchrony for future studies was also discussed.
Abstract
The Weyl semimetal (WSM), which hosts pairs of Weyl points and accompanying Berry curvature in momentum space near Fermi level, is expected to exhibit novel electromagnetic phenomena. ...Although the large optical/electronic responses such as nonlinear optical effects and intrinsic anomalous Hall effect (AHE) have recently been demonstrated indeed, the conclusive evidence for their topological origins has remained elusive. Here, we report the gigantic magneto-optical (MO) response arising from the topological electronic structure with intense Berry curvature in magnetic WSM Co
3
Sn
2
S
2
. The low-energy MO spectroscopy and the first-principles calculation reveal that the interband transitions on the nodal rings connected to the Weyl points show the resonance of the optical Hall conductivity and give rise to the giant intrinsic AHE in dc limit. The terahertz Faraday and infrared Kerr rotations are found to be remarkably enhanced by these resonances with topological electronic structures, demonstrating the novel low-energy optical response inherent to the magnetic WSM.
The mechanisms by which the diffusion rate in the plasma membrane (PM) is regulated remain unresolved, despite their importance in spatially regulating the reaction rates in the PM. Proposed models ...include entrapment in nanoscale noncontiguous domains found in PtK2 cells, slow diffusion due to crowding, and actin-induced compartmentalization. Here, by applying single-particle tracking at high time resolutions, mainly to the PtK2-cell PM, we found confined diffusion plus hop movements (termed "hop diffusion") for both a nonraft phospholipid and a transmembrane protein, transferrin receptor, and equal compartment sizes for these two molecules in all five of the cell lines used here (actual sizes were cell dependent), even after treatment with actin-modulating drugs. The cross-section size and the cytoplasmic domain size both affected the hop frequency. Electron tomography identified the actin-based membrane skeleton (MSK) located within 8.8 nm from the PM cytoplasmic surface of PtK2 cells and demonstrated that the MSK mesh size was the same as the compartment size for PM molecular diffusion. The extracellular matrix and extracellular domains of membrane proteins were not involved in hop diffusion. These results support a model of anchored TM-protein pickets lining actin-based MSK as a major mechanism for regulating diffusion.
Autophagosome formation is governed by sequential functions of autophagy-related (ATG) proteins. Although their genetic hierarchy in terms of localization to the autophagosome formation site has been ...determined, their temporal relationships remain largely unknown. In this study, we comprehensively analyzed the recruitment of mammalian ATG proteins to the autophagosome formation site by live-cell imaging, and determined their temporal relationships. Although ULK1 and ATG5 are separated in the genetic hierarchy, they synchronously accumulate at pre-existing VMP1-positive punctate structures, followed by recruitment of ATG14, ZFYVE1, and WIPI1. Only a small number of ATG9 vesicles appear to be associated with these structures. Finally, LC3 and SQSTM1/p62 accumulate synchronously, while the other ATG proteins dissociate from the autophagic structures. These results suggest that autophagosome formation takes place on the VMP1-containing domain of the endoplasmic reticulum or a closely related structure, where ULK1 and ATG5 complexes are synchronously recruited.
Clear-cell carcinoma of the ovary Fujiwara, K; Shintani, D; Nishikawa, T
Annals of oncology,
04/2016, Letnik:
27 Suppl 1
Journal Article
Recenzirano
Odprti dostop
Clear-cell carcinoma of the ovary (CCCO) is a distinct entity of epithelial ovarian cancer in terms of clinical, histopathological, or genetic features. The incidence of CCCO is different by ...ethnicity but the reason is not clear yet. Overall prognosis of CCCO is good because most CCCO is found in stage I. However, advanced disease is associated with a very poor prognosis and resistance to standard treatment. The same is true for recurrent disease. Therefore, genetic analysis of CCCO is important to find the right target(s) and better therapeutic approaches. Because of its rarity, international collaboration is necessary to conduct randomized clinical trials for CCCO.
•Effective thermal conductivity (ETC) of nanofluids was investigated by MD.•Components of ETC were compared by EMD and NEMD calculations.•Component of solid-solid interaction in a nanoparticle ...affected change of ETC.•EMD and NEMD calculations showed good agreement for not only ETC but also components.
Extensive studies on the effective thermal conductivity (ETC) of nanofluids have been conducted thus far; however, the mechanisms behind the change in ETC remain unclear. In the present study, we investigated the components of the ETC of nanofluids, based on equilibrium molecular dynamics (EMD) and non-EMD (NEMD) calculations, to elucidate more accurately the mechanisms responsible for change in ETC. Until now, the factors affecting ETC have not been revealed clearly, and not compared quantitatively by the EMD and NEMD. This study also aimed to compare the constituents of ETC quantitatively to validate the NEMD calculation as a method for determining the ETC of nanofluids. Our detailed results demonstrate that the primary factors contributing to the change in ETC are thermal transport in liquid–liquid interactions and the solid–solid interactions in nanoparticles. The ETC components related to liquid exhibit consistency between the EMD and NEMD calculations, with less than 5.0% difference. Conversely, although the components related to nanoparticles result in differences of more than 10%, these properties do not appear to have a significant impact on ETC. On the basis of the findings of this study, we are able to calculate consistent results for not only ETC but also its components, via EMD and NEMD, for a liquid system with a spherical nanoparticle.
Single-fluorescent-molecule imaging tracking (SMT) is becoming an important tool to study living cells. However, photobleaching and photoblinking (hereafter referred to as ...photobleaching/photoblinking) of the probe molecules strongly hamper SMT studies of living cells, making it difficult to observe in vivo molecular events and to evaluate their lifetimes (e.g., off rates). The methods used to suppress photobleaching/photoblinking in vitro are difficult to apply to living cells because of their toxicities. Here using 13 organic fluorophores we found that, by combining low concentrations of dissolved oxygen with a reducing-plus-oxidizing system, photobleaching/photoblinking could be strongly suppressed with only minor effects on cells, which enabled SMT for as long as 12,000 frames (~7 min at video rate, as compared to the general 10-s-order durations) with ~22-nm single-molecule localization precisions. SMT of integrins revealed that they underwent temporary (<80-s) immobilizations within the focal adhesion region, which were responsible for the mechanical linkage of the actin cytoskeleton to the extracellular matrix.
There has been no phase III study of comparing the efficacy of first- and second-generation 5-HT3 receptor antagonists in the triplet regimen with dexamethasone and aprepitant for preventing ...chemotherapy-induced nausea and vomiting after highly emetogenic chemotherapy (HEC).
Patients with a malignant solid tumor who would receive HEC containing 50 mg/m2 or more cisplatin were randomly assigned to either palonosetron (0.75 mg) arm (Arm P) or granisetron (1 mg) arm (Arm G), on day 1, both arms with dexamethasone (12 mg on day 1 and 8 mg on days 2–4) and aprepitant (125 mg on day 1 and 80 mg on days 2–3). The primary end point was complete response (CR; no vomiting/retching and no rescue medication) at the 0–120 h period and secondary end points included complete control (CC; no vomiting/retching, no rescue medication, and no more than mild nausea) and total control (TC; no vomiting/retching, no rescue medication, and no nausea).
Between July 2011 and June 2012, 842 patients were enrolled. Of 827 evaluable, 272 of 414 patients (65.7%) in Arm P had a CR at the 0–120 h period when compared with 244 of 413 (59.1%) in Arm G (P = 0.0539). Both arms had the same CR rate of 91.8% at the acute (0–24 h) period, while at the delayed (24–120 h) period, Arm P had a significantly higher CR rate than Arm G (67.2% versus 59.1%; P = 0.0142). In secondary end points, Arm P had significantly higher rates than Arm G at the 0–120 h period (CC rate: 63.8% versus 55.9%, P = 0.0234; TC rate: 47.6% versus 40.7%, P = 0.0369) and delayed periods (CC rate: 65.2% versus 55.9%, P = 0.0053; TC rate: 48.6% versus 41.4%, P = 0.0369).
The present study did not show the superiority of palonosetron when compared with granisetron in the triplet regimen regarding the primary end point.
UMIN000004863.
Confinement of molecules in specific small volumes and areas within a cell is likely to be a general strategy that is developed during evolution for regulating the interactions and functions of ...biomolecules. The cellular plasma membrane, which is the outermost membrane that surrounds the entire cell, was considered to be a continuous two-dimensional liquid, but it is becoming clear that it consists of numerous nano-meso-scale domains with various lifetimes, such as raft domains and cytoskeleton-induced compartments, and membrane molecules are dynamically trapped in these domains. In this article, we give a theoretical account on the effects of molecular confinement on reversible bimolecular reactions in a partitioned surface such as the plasma membrane. By performing simulations based on a lattice-based model of diffusion and reaction, we found that in the presence of membrane partitioning, bimolecular reactions that occur in each compartment proceed in bursts during which the reaction rate is sharply and briefly increased even though the asymptotic reaction rate remains the same. We characterized the time between reaction bursts and the burst amplitude as a function of the model parameters, and discussed the biological significance of the reaction bursts in the presence of strong inhibitor activity.
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