Article
Environmental Sciences
Shin-ichi Hayama, Aki Tanaka, Setsuko Nakanishi, Fumiharu Konno, Yoshi Kawamoto, Kazuhiko Ochiai, Toshinori Omi
Summary: Over the 10 years following the Fukushima nuclear accident, changes in the muscle Cs-137 concentration of wild Japanese monkeys were measured. The concentration decreased over time, but no significant difference was found between 2017 and 2020, suggesting a continued accumulation of Cs-137 in muscle.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Veterinary Sciences
Shin-ichi Hayama, Setsuko Nakanishi, Aki Tanaka, Fumiharu Konno, Yoshi Kawamoto, Toshinori Omi
Summary: This study aims to clarify the biological effects of radiation exposure on fetal growth in wild Japanese monkeys after the Fukushima nuclear accident. The results showed a positive association between radiation exposure and fetal body weight and head circumference, and a negative association with maternal body length. This suggests that radiation exposure resulting from the nuclear accident may have caused delayed fetal growth in Japanese monkeys.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Public, Environmental & Occupational Health
Tomoyuki Kobayashi, Masaharu Maeda, Chihiro Nakayama, Yui Takebayashi, Hideki Sato, Noriko Setou, Maho Momoi, Naoko Horikoshi, Seiji Yasumura, Hitoshi Ohto
Summary: This study examined the impact of disaster resilience on the recovery of mental health and the alleviation of anxiety in the aftermath of the Fukushima Daiichi nuclear power plant accident. The findings showed that an action-oriented approach can reduce radiation-related anxiety by improving mental health states. In the evacuation-directed area, there were stronger associations between resilience, mental health states, and radiation-related anxiety, with resilience factors directly affecting radiation risk anxiety.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Multidisciplinary Sciences
Motoko Morimoto, Jin Kobayashi, Yasushi Kino
Summary: The Fukushima Daiichi Nuclear Power Plant accident resulted in widespread contamination of radioactive cesium in Japan. Wild boars in the affected area showed decreased radioactive cesium levels compared to immediately after the accident, but still exceeded regulatory limits. The expression of certain genes related to immune response and cell growth were elevated in the small intestines of these wild boars. However, no pathological damage was observed. Long-term monitoring is necessary, but the body's response to the contaminated environment appears appropriate.
SCIENTIFIC REPORTS
(2022)
Article
Medicine, General & Internal
Chika Yamamoto, Toyoaki Sawano, Yoshitaka Nishikawa, Akihiko Ozaki, Yuki Shimada, Tomohiro Morita, Tianchen Zhao, Arifumi Hasegawa, Tomoyoshi Oikawa, Masaharu Tsubokura
Summary: The study found that the emergency medical transport time in the Fukushima nuclear power plant accident evacuation area was significantly longer than in other areas, mainly due to the longer transport time resulting in an overall increase in EMS response time. This may be related to the closure of local medical facilities after the nuclear accident.
Article
Public, Environmental & Occupational Health
Limeng Cui, Lijuan Chu
Summary: This study examined the characteristics of YouTube videos related to the Fukushima Daiichi Nuclear Power Plant disaster and analyzed video content and comments quantitatively to determine features contributing to video popularity. The results suggest that video quality, filming location in Fukushima, and information on the recent situation in Fukushima are key factors in making videos popular with audiences.
JMIR PUBLIC HEALTH AND SURVEILLANCE
(2021)
Article
Geosciences, Multidisciplinary
JoffreyDumont Le Brazidec, Marc Bocquet, Olivier Saunier, Yelva Roustan
Summary: The accident at the Fukushima Daiichi NPP resulted in significant and rapidly changing releases of atmospheric radionuclides. Inverse modelling methods, particularly Bayesian inversion, can effectively assess these releases and their uncertainties by combining an atmospheric transport model with a range of observations. This study developed Bayesian algorithms to estimate the magnitude and temporal evolution of the Fukushima Daiichi NPP's cesium 137 (137Cs) release, taking into account the spatio-temporal information and uncertainties associated with observations, models, and source estimates.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Geosciences, Multidisciplinary
Moe Kawashima, Toyoaki Sawano, Michio Murakami, Nobuaki Moriyama, Kenmei Kitazawa, Yuna Uchi, Saori Nonaka, Naomi Ito, Hiroaki Saito, Toshiki Abe, Mamoru Sakakibara, Kazuko Yagiuchi, Mako Otsuki, Arinobu Hori, Akihiko Ozaki, Chika Yamamoto, Tianchen Zhao, Taiga Uchiyama, Tomoyoshi Oikawa, Shinichi Niwa, Masaharu Tsubokura
Summary: The health of vulnerable populations receiving Long-Term Care (LTC) Insurance Programs is threatened by the impact of disasters. Those with a higher need for LTC certification during the earthquake were more likely to die from circulatory and respiratory diseases. The time from disaster to death was shorter for those with higher levels of LTC.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2023)
Article
Geosciences, Multidisciplinary
Jessica Callen-Kovtunova, Toshimitsu Homma
Summary: This study focuses on off-site arrangements and response actions before and after the Fukushima nuclear disaster, particularly urgent protective actions like evacuation, sheltering, and iodine thyroid blocking. It highlights the reliance on decision support systems despite their ineffectiveness early in the response, emphasizing the need for effective strategies to ensure population protection and risk reduction.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2022)
Article
Geosciences, Multidisciplinary
Toshihiro Terui, Yasuto Kunii, Hiroshi Hoshino, Takeyasu Kakamu, Tomoo Hidaka, Tetsuhito Fukushima, Nobuo Anzai, Daisuke Gotoh, Itaru Miura, Hirooki Yabe
Summary: This study analyzed the hospital evacuation destinations of psychiatric inpatients in Fukushima prefecture following the 2011 Fukushima nuclear accident. It found that specific psychiatric diagnoses and physical comorbidities were associated with evacuation destinations, providing insights for improving strategies for evacuated psychiatric patients in the future.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2021)
Review
Medicine, General & Internal
Sachiko Yashima, Koichi Chida
Summary: This paper discusses the efforts of radiologic technologists in providing personalized consultations in southern Miyagi following the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. In response to the actual nuclear disaster, radiologic technologists carried out activities aimed at alleviating anxiety among pregnant women and parents with infants. The results of a questionnaire survey conducted after the activities are also discussed.
TOHOKU JOURNAL OF EXPERIMENTAL MEDICINE
(2022)
Article
Environmental Sciences
Chang Zhao, Gang Wang, Min Zhang, Guansuo Wang, Govert de With, Roman Bezhenar, Vladimir Maderich, Changshui Xia, Biao Zhao, Kyung Tae Jung, Raul Peri, Mohd Fadzil Akhir, Chalermrat Sangmanee, Fangli Qiao
Summary: Japan plans to release over 1.2 million tons of radioactive water from the Fukushima Daiichi Nuclear Power Plant into the Pacific Ocean, posing a threat to marine ecosystems and human health. Studies show that in short-term release scenarios, the peak plume with high tritium concentration can reach the northeastern Pacific, while in long-term release scenarios, the contaminated water plume is confined to coastal regions east of Japan.
MARINE POLLUTION BULLETIN
(2021)
Review
Environmental Sciences
Toshihiro Horiguchi, Keita Kodama
Summary: This article discusses possible reasons for the decline in intertidal invertebrate populations near the Fukushima Daiichi Nuclear Power Plant (FDNPP) after the 2011 earthquake, tsunami, and nuclear disaster. It highlights the gap between laboratory and natural environment observations and emphasizes the importance of considering ionizing radiation, other environmental factors, and species life-history traits for realistic assessment of population-level effects. The article also presents possible causal factors for strange or abnormal phenomena observed in intertidal biota near FDNPP.
Article
Environmental Sciences
Kazuyuki Sakuma, Susumu Yamada, Masahiko Machida, Hiroshi Kurikami, Toshiharu Misonou, Takahiro Nakanishi, Kazuki Iijima
Summary: The planned release of tritium (3H) into the ocean in the Fukushima coastal region is expected to take place in Spring or Summer of 2023. Prior to the release, the impact of 3H discharges from both the port of Fukushima Daiichi and rivers in the region was evaluated using a three-dimensional hydrodynamic model (3D-Sea-SPEC). The simulation results showed that the discharges from the port of Fukushima Daiichi had the dominant effect on 3H concentrations within a range of approximately 1 km. Additionally, under storm flow conditions, the riverine 3H discharge was found to have an impact on the Fukushima coastal regions, resulting in an average seawater 3H concentration of approximately 0.1 Bq/L near the shore.
MARINE POLLUTION BULLETIN
(2023)
Article
Chemistry, Physical
E-A Reinecke, K. Takenaka, H. Ono, T. Kita, M. Taniguchi, Y. Nishihata, R. Hino, H. Tanaka
Summary: The safe decommissioning and decontamination of radioactive waste from the Fukushima Daiichi nuclear accident is a huge task for the next decade. Research on long-term safe storage containers in Japan, with international cooperation, has become urgent. A challenge is the generation of significant amounts of hydrogen and oxygen inside containers due to radiolysis of nuclear waste, which can lead to pressure build-up and formation of flammable gases. Investigating the use of catalytic recombiner devices in storage containers is a potential solution, with a focus on an automotive catalyst with a self-healing function of precious metals.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Veterinary Sciences
Hiroyuki Tani, Sena Kurita, Ryo Miyamoto, Kazuhiko Ochiai, Kyoichi Tamura, Makoto Bonkobara
VETERINARY AND COMPARATIVE ONCOLOGY
(2020)
Article
Veterinary Sciences
Mitsuki Uemura, Kazuhiko Ochiai, Masami Morimatsu, Masaki Michishita, Eri Onozawa, Daigo Azakami, Yumiko Uno, Yasunaga Yoshikawa, Takanori Sasaki, Masami Watanabe, Toshinori Omi
VETERINARY AND COMPARATIVE ONCOLOGY
(2020)
Article
Veterinary Sciences
Kazuhiko Ochiai, Samak Sutijarit, Mitsuki Uemura, Masami Morimatsu, Masaki Michishita, Eri Onozawa, Marika Maeda, Takanori Sasaki, Masami Watanabe, Yoshikazu Tanaka, Toshinori Omi
Summary: Most male dogs are castrated at a young age, affecting the polyglutamine sequences in the androgen receptor and potentially influencing the risk of prostate cancer. However, there is currently no evidence to support this correlation.
VETERINARY AND COMPARATIVE ONCOLOGY
(2021)
Article
Veterinary Sciences
Sachiko Moriguchi, Rin Hosoda, Nana Ushine, Takuya Kato, Shin-ichi Hayama
Summary: The AI surveillance system for wild birds in Japan showed success in early detection of HPAIV in some outbreak seasons but lacked adequate assessment and monitoring methods. Improvements are needed in the national surveillance system to enhance efficiency and accuracy in detecting and managing HPAIV infections.
PREVENTIVE VETERINARY MEDICINE
(2021)
Article
Ecology
Tsuyoshi Ito, Takashi Hayakawa, Nami Suzuki-Hashido, Yuzuru Hamada, Yosuke Kurihara, Goro Hanya, Akihisa Kaneko, Takayoshi Natsume, Seitaro Aisu, Takeaki Honda, Syuji Yachimori, Tomoko Anezaki, Toshinori Omi, Shin-ichi Hayama, Mikiko Tanaka, Hikaru Wakamori, Hiroo Imai, Yoshi Kawamoto
Summary: This study elucidates the phylogeographic variation of Japanese macaques, showing that it is mainly due to northeast-southwest divergence during the glacial period, followed by gene flow. Phylogenetic relationships and past distributions during the Last Glacial Maximum were inferred using genomic data and ecological niche modelling.
JOURNAL OF BIOGEOGRAPHY
(2021)
Article
Infectious Diseases
Kandai Doi, Minori Kono, Takuya Kato, Shin-ichi Hayama
Summary: The introduced raccoon and masked palm civet in Japan were found to carry a high number of ticks, with raccoons hosting a greater variety while the masked palm civets ingested more nymphal and larval ticks. This study sheds light on the ecological roles of these introduced wildlife species, with raccoons potentially boosting tick populations and reproduction, while masked palm civets may act as a trap by grooming to remove ticks and prevent bloodmeals.
TICKS AND TICK-BORNE DISEASES
(2021)
Article
Environmental Sciences
Shin-ichi Hayama, Aki Tanaka, Setsuko Nakanishi, Fumiharu Konno, Yoshi Kawamoto, Kazuhiko Ochiai, Toshinori Omi
Summary: Over the 10 years following the Fukushima nuclear accident, changes in the muscle Cs-137 concentration of wild Japanese monkeys were measured. The concentration decreased over time, but no significant difference was found between 2017 and 2020, suggesting a continued accumulation of Cs-137 in muscle.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Kazuki Kiuno, Takuya Kato, Hiroko Otsubo, Ryoko Kibe, Yasushi Kataoka, Shin-ichi Hayama
Summary: We detected leptospiral DNA and antibodies in captured raccoons, and found that the prevalence and seroprevalence rates differed depending on the dispersal period of raccoons, indicating that young males may spread Leptospira through dispersal. Additionally, raccoons were found to contain Leptospira during warm and rainy seasons, which are suitable for the survival of Leptospira and wild rodents. Raccoons in urban environments may have higher exposure to Leptospira.
Article
Agriculture, Dairy & Animal Science
Takuya Kato, Fumiaki Yamasaki, Kandai Doi, Mieko Kawamichi, Shin-ichi Hayama
Summary: The morphological characteristics of raccoons in different regions of Japan were investigated, showing that males were larger than females and body length increased with age class, but there was no difference between regions. Cranial size positively correlated with age class, body length, and body mass index in both sexes, but differed between regions for females. These findings suggest that older individuals with larger body sizes have an advantage in intrasexual selection and competition for food resources in raccoons.
Article
Veterinary Sciences
Nana Ushine, Osamu Kurata, Yoshikazu Tanaka, Tatsuo Sato, Yoshihiro Kurahashi, Shin-ichi Hayama
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2020)
Article
Veterinary Sciences
Natsuko Sugiura, Aki Tanaka, Kazuhiko Ochiai, Toshiaki Yamamoto, Tatsushi Morita, Takuya Kato, Yoshi Kawamoto, Toshinori Omi, Shin-ichi Hayama
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2020)
Article
Veterinary Sciences
Natsuko Sugiura, Kazuhiko Ochiai, Toshiaki Yamamoto, Takuya Kato, Yoshi Kawamoto, Toshinori Omi, Shin-ichi Hayama
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2020)
Article
Biology
Toshinori Omi, Sachie Nakiri, Setsuko Nakanishi, Naomi Ishii, Taiki Uno, Fumiharu Konno, Takeshi Inagaki, Atsushi Sakamoto, Masayuki Shito, Chihiro Udagawa, Naomi Tada, Kazuhiko Ochiai, Takuya Kato, Yoshi Kawamoto, Shuichi Tsuchida, Shin-ichi Hayama
BMC RESEARCH NOTES
(2020)
Article
Veterinary Sciences
Nana Ushine, Shouta M. M. Nakayama, Mayumi Ishizuka, Tatsuo Sato, Yoshihiro Kurahashi, Emu Wakayama, Natsuko Sugiura, Shin-ichi Hayama
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2020)
Article
Veterinary Sciences
Nana Ushine, Aki Tanaka, Shin-ichi Hayama
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2020)
