Publications by authors named "H YOSHIKAWA"

Recent molecular phylogenetic studies have raised two questions about the evolutionary history of the calcified exoskeleton of mollusks. The first question concerns the homology of the two types of skeleton: whether spicules and shell plates share an evolutionary origin. The second question is the homology of the shell plates between chitons and other mollusks, including gastropods and bivalves.

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Inorganic polyphosphate (polyP) is a linear polymer of phosphate that plays various roles in cells, including in phosphate and metal homeostasis. Homologs of the vacuolar transporter chaperone 4 (VTC4), catalyzing polyP synthesis in many eukaryotes, are absent in red algae, which are among the earliest divergent plant lineages. We identified homologs of polyphosphate kinase 1 (PPK1), a conserved polyP synthase in bacteria, in 42 eukaryotic genomes, including 31 species detected in this study and 12 species of red algae.

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Experiences in gender-sexuality alliances (GSAs) could predict youth's academic engagement through improved social-emotional wellbeing (indicated by school belonging, hope, and positive and negative affect). This study utilized three waves of data, each spaced 2-3 months apart, among 627 youth (87% LGBQ+, 45% trans/nonbinary, 48% youth of color) ages 11-22 (M = 15.13) in 51 GSAs in the United States in 2021-2022.

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Article Synopsis
  • Co-infections with multiple HPV genotypes in Japan are linked to increased sexual activity, with a study analyzing data from 8,128 women under 40 diagnosed with cervical abnormalities from 2012 to 2023.
  • Significant declines in multiple HPV infections were observed across different categories of cervical disease (CIN1/2, CIN3/AIS, ICC) over the past decade.
  • The study suggests that this decline may correlate with reduced sexual activity among Japanese women, as indicated by a survey of sexual behavior showing a strong link between the number of sexual partners and increased HPV infections.
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Article Synopsis
  • - We created a new optical microscope that can simultaneously image both the fluidity and structure of cell membranes to understand cell adhesion better.
  • - In tests, we observed how a giant unilamellar vesicle interacts with a glass surface, revealing areas of membrane fluidity and corresponding adhesion sites in both cancerous and non-cancerous cells.
  • - By manipulating cholesterol and unsaturated lipids, we identified distinct adhesion signatures in cancer cells, suggesting that our microscope could help study membrane properties in various cell types beyond just cancer.
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