Publications by authors named "T Katsumura"
Article Synopsis
- The review highlights advances in social neuroscience through the study of medaka fishes, focusing on their social cognition and mate choice behaviors, especially involving visual cues.
- Medaka fishes are advantageous for research due to their rich genetic resources and ease of genetic manipulation, making them ideal for studying evolutionary social neuroscience.
- The introduction of single-cell transcriptome technology, paired with 'Adaptive Circuitry Census,' promises to deepen understanding of molecular mechanisms behind visual mate preferences and mating strategies across species.
Coprolites contain various kinds of ancient DNAs derived from gut micro-organisms, viruses, and foods, which can help to determine the gut environment of ancient peoples. Their genomic information should be helpful in elucidating the interaction between hosts and microbes for thousands of years, as well as characterizing the dietary behaviors of ancient people. We performed shotgun metagenomic sequencing on four coprolites excavated from the Torihama shell-mound site in the Japanese archipelago.
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- - This study explored how the oxygen dynamics in the vastus lateralis (VL) muscle relates to systemic oxygen supply during high-intensity cycling in young men without an attenuation point (AP) in muscle deoxygenation.
- - Participants underwent ramp cycling exercises before and after 8 weeks, while their muscle oxygen saturation and deoxygenated hemoglobin were monitored to assess changes in oxygen dynamics.
- - Results indicated a significant increase in the slope of deoxygenated hemoglobin in VL post-training, suggesting that changes in systemic oxygen supply are more influential on muscle deoxygenation during intense exercise than oxygen balance in other thigh muscles.
Article Synopsis
- The study examines how lowlanders' bodies respond to hypobaric hypoxia (HH), simulating high-altitude conditions for 75 minutes in a controlled chamber.
- Significant changes were observed: levels of aldosterone and cortisol decreased, while inflammatory markers like interleukin (IL)-6 and IL-8, along with white blood cell counts, increased after HH exposure.
- The research indicates that even brief exposure to HH triggers notable endocrine and immune responses, especially in individuals with lower peripheral oxygen saturation (SpO), enhancing our understanding of physiological adaptations to low-oxygen environments.