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Shin-ichi Hayama

  (羽山 伸一)

Profile Information

Affiliation
Professor, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University
Degree
(BLANK)

J-GLOBAL ID
200901047720639640
researchmap Member ID
1000093633

Committee Memberships

 2

Papers

 124
  • Shin-ichi Hayama, Setsuko Nakanishi, Aki Tanaka, Takuya Kato, Chinatsu Watanabe, Nobutaka Kikuchi, Risa Danjo, Ayano Matsuda, Wakako Mori, Yuki Kawabata, Hikari Akiba, Fumiharu Konno, Yoshi Kawamoto, Toshinori Omi
    Archives of Environmental Contamination and Toxicology, Apr 25, 2024  Peer-reviewedCorresponding author
  • Nana Ushine, Makoto Ozawa, Shouta, Mayumi Ishizuka, Takuya Kato, Shin-ichi Hayama
    Animals, 13(14) 2338-2338, Jul, 2023  Peer-reviewedLast author
    Lead (Pb), an environmental pollutant, has been widely reported to have contaminated mammals, including humans and birds. This study focuses on the effects of Pb pollution on avian influenza virus (AIV) antibody production. A total of 170 black-headed gulls (Chroicocephalus ridibundus) were captured in Tokyo Bay (TBP) from January 2019 to April 2020 and in Mikawa Bay (MBP) from November 2019 to April 2021. The gulls were weighed, subjected to blood sampling, and released with a ring band on their tarsus. The samples were used to measure blood Pb levels (BLL) and AIV-specific antibodies. The BLL were compared using the Wilcoxon two-sample test between the period when black-headed gulls arrived and the wintering period, defined by the number of gulls counted in each area. A significant increase was found in the TBP. A decrease in BLL significantly increased antibody titer during wintering in TBP and MBP. Pb pollution had a negative effect on the production of AIV antibodies. These findings suggest that wild birds that were contaminated by Pb in the environment may facilitate the spread of zoonotic diseases, further increasing the possibility that environmental pollutants may threaten human health.
  • Yoshi KAWAMOTO, Shin-ichi HAYAMA, Tamaki MARUHASHI, Hisashi YAMAKAWA, Kei SHIRAI, Misao OKANO, Tatsuaki KONDO, Keisuke KATO, Daisuke SHIRATORI, Keigo AIZAWA, Fumitaka IKEDA, Youji NAOI
    Primate Research, 39(1) 45-51, Jun 23, 2023  
  • Nana Ushine, Shouta MM Nakayama, Mayumi Ishizuka, Takuya Kato, Shin-ichi Hayama
    Japanese Journal of Environmental Toxicology, 26 25-37, Jun, 2023  Peer-reviewed
  • Shin-ichi Hayama, Setsuko Nakanishi, Aki Tanaka, Fumiharu Konno, Yoshi Kawamoto, Toshinori Omi
    Frontiers in Veterinary Science, 10, Apr 26, 2023  Peer-reviewedLead authorCorresponding author
    Wild Japanese monkeys (Macaca fuscata) were exposed to radiation after the Fukushima Daiichi nuclear accident in 2011. To clarify the biological effects of radiation exposure on their fetal growth, pregnant monkeys and their fetuses were analyzed. These animals were collected between 2008 and 2020 (before and after the accident in 2011) living in Fukushima City, approximately 70 km from the nuclear power plant. Multiple regression analyses were conducted with fetal body weight (FBW) and fetal head circumference (FHS) as objective variables, and maternal and fetal factors as explanatory variables. The maternal factors were relative exposure dose rate (REDR), age, body weight, body length, fat index, and parity. The fetal factors were crown ramp length (CRL) and sex. Multiple regression analyses showed that FBR and FHS growth were positively associated with CRL, maternal body length, and negatively associated with REDR. Since the relative growth of FBR and FHS to CRL decreased with increasing REDR, radiation exposure due to the nuclear accident may have contributed to the delayed fetal growth observed in Japanese monkeys.

Misc.

 120

Books and Other Publications

 36

Teaching Experience

 6

Research Projects

 11