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Hiroyuki Kaji,Akira Togayachi,Makoto Ochou,Maki Sogabe,Takashi Okura,Hirofumi Nozaki,Takashi Angata,Yasunori Chiba,Hidenori Ozaki,Atsushi Kuno,Yasuhito Tanaka,Yuzuru Ikehara,Masashi Mizokami,Hisashi N 한국당과학회 2012 한국당과학회 학술대회 Vol.2012 No.1
We present here a high-throughput strategy to discover serological biomarkers for early-detection of hepatocellular carcinoma (HCC). Our strategy is also applicable to assess the progressed liver fibrosis that is associated with virus hepatitis. The glycan structure on glycoproteins derived from cancerous cells is known to be different from that derived from normal cells, specifically, the increased aberrant glycosylation appears in patient serum with virus hepatitis along with either or both the initiation and progression. Based on the above perceptions, in order to identify glycoproteins carrying aberrant glycosylation in serum of liver disease patients, we analyzed lectin-captured glycopeptides by the IGOT method. Many glycoproteins carrying altered glycans were successfully identified. The increased amount of these glycoproteins was clinically relevant to the progression of the liver diseases. We are now selecting appropriate molecules depending on the feasibility to detect an abnormality in the liver, such as the occurrence of liver cell neoplasm.
Tomoharu Inoue,Shin Nagai,Shota Inoue,Masahiro Ozaki,Shohei Sakai,Hiroyuki Muraoka,Hiroshi Koizumi 한국산림과학회 2012 Forest Science And Technology Vol.8 No.2
We investigated the relationships between soil respiration and environmental factors during foliation and defoliation periods in three ecosystems under the same physical–geographical environmental conditions in central Japan. These ecosystems comprised deciduous broad-leaved forest (Quercus crispula dominated, site Q), deciduous needle-leaved forest (Larix kaempferi dominated, site L), and grassland (Zoysia japonica dominated, site Z). Field measurements of soil respiration were made using a closed chamber method with an infrared gas analyzer at monthly intervals in the snow-free seasons from May 2010 to November 2011. Soil respiration began to increase in May, peaked rapidly in summer (July to September), and decreased in November. The seasonal patterns of soil respiration and soil temperature were nearly parallel among the three sites, with one exception, which may have been caused by the decrease in soil water content during summer months (July to September). Although Q_10 values based on the entire measurement period in 2010 were roughly the same as those in 2011 at the three sites, there was a large difference in Q_10 between the foliation and defoliation periods in both years, especially at the two forest sites. These differences among the three sites may be caused by differences in soil temperature dynamics and precipitation activity. To better understand the relationship between soil respiration and environmental factors, continuous observations are needed of soil respiration, environmental factors, and biological activities both below ground and above ground under the same physical–geographical environmental conditions.