Publications by authors named "S Saegusa"

Background: Systematic reviews and meta-analyses are important to evidence-based medicine, but the information retrieval and literature screening procedures are burdensome tasks. Rapid Medical Evidence Synthesis (RMES; Deloitte Tohmatsu Risk Advisory LLC) is a software designed to support information retrieval, literature screening, and data extraction for evidence-based medicine.

Objective: This study aimed to evaluate the accuracy of RMES for literature screening with reference to published systematic reviews.

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The electrochemical Ni deposition at a platinum electrode was investigated in a plating nickel bath in the presence and absence of ethylene glycol (EG) using fluorescence yield soft X-ray absorption spectroscopy (FY-XAS) in the Ni L-edge and O K-edge regions under potential control. At ≤+0.35 V the reversible hydrogen electrode (RHE), the electrochemical Ni deposition was detected by the Ni L-edge FY-XAS in the presence of EG whereas almost no such event was observed in the absence of EG.

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Article Synopsis
  • Researchers used an advanced Markus ionization chamber and phantom blocks to measure surface and build-up doses for Elekta’s 6 MV flattening filter (FF) and flattening-filter-free (FFF) beams across different field sizes.
  • They found that the maximum dose difference between FF and FFF beams was 4.4% at a 1 mm depth for a 2x2 cm field, decreasing as field size increased to 10x10 cm.
  • Comparisons with Varian data indicated that Elekta's FF and FFF surface and build-up doses were smaller than those measured with Varian linacs.
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ADP ribosylation factor 6 (Arf6) is a small GTPase that regulates various neuronal events including formation of the axon, dendrites and dendritic spines, and synaptic plasticity through actin cytoskeleton remodeling and endosomal trafficking. EFA6C, also known as Psd2, is a guanine nucleotide exchange factor for Arf6 that is preferentially expressed in the cerebellar cortex of adult mice, particularly in Purkinje cells. However, the roles of EFA6C in cerebellar development and functions remain unknown.

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Cytohesin-2 is a member of the guanine nucleotide exchange factors for ADP ribosylation factor 1 (Arf1) and Arf6, which are small GTPases that regulate membrane traffic and actin dynamics. In this study, we first demonstrated that cytohesin-2 localized to the plasma membrane and vesicles in various subcellular compartment in hippocampal neurons by immunoelectron microscopy. Next, to understand the molecular network of cytohesin-2 in neurons, we conducted yeast two-hybrid screening of brain cDNA libraries using cytohesin-2 as bait and isolated pallidin, a component of the biogenesis of lysosome-related organelles complex 1 (BLOC-1) involved in endosomal trafficking.

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