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Tsukada H, Takeda A, Takahashi T, Fukutani S, Akashi M, Takahashi J, Uematsu S, Chyzhevskyi I, Kirieiev S, Kashparov V, Zheleznyak M. Transfer of 137Cs and 90Sr from soil-to-potato: Interpretation of the association from global fallout in Aomori to accidental release in Fukushima and Chornobyl. Sci Total Environ 2023; 899:165467. [PMID: 37454838 DOI: 10.1016/j.scitotenv.2023.165467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/03/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023]
Abstract
Ceasium-137 and 90Sr are major artificial radionuclides that have been released into the environment. Soil-to-plant transfer of radionuclides is an important route to food contamination. The radionuclide activity concentrations in crops must be quantitatively predicted for estimating the internal radiation doses from food ingestion. In this study, soil and potato samples were collected from three study sites contaminated with different sources of 137Cs and 90Sr: Aomori Prefecture (global fallout) and two accidental release areas (Fukushima Prefecture and the Chornobyl exclusion zone). The 137Cs activity concentrations in the soil and potato samples widely ranged from 1.0 to 250,000 and from 0.048 to 200,000 Bq kg-1 dry weight, respectively. The soil-to-potato transfer factor of 137Cs also ranged widely (0.0015-1.1) and decreased with increasing concentration of exchangeable K. Meanwhile, the activity concentrations of 90Sr in the soil and potato samples were 0.50-64,000 and 0.027-18,000 Bq kg-1 dry weight respectively, and the soil-to-potato transfer factor of 90Sr was 0.023-0.74, decreasing with increasing concentration of exchangeable Ca. The specific activity ratios of 137Cs/Cs and 90Sr/Sr in the exchangeable fraction were similar to those in potatoes, with a factor of 3 in the ±95 % confidence intervals over six orders of magnitude and a factor of 2 in the ±95 % confidence intervals over five orders of magnitude, respectively. According to the data, the accuracy of predicting the activity concentrations of 137Cs and 90Sr in potatoes can be improved by applying the specific activity ratios of 137Cs/Cs and 90Sr/Sr in the exchangeable fraction. This approach accounts for variable factors such as the effects of K and Ca fertilization and soil characteristics. It also emphasizes the benefit of determining the stable Cs and Sr concentrations in potatoes and other crops prior to possible future contamination.
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Affiliation(s)
- Hirofumi Tsukada
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima-shi, Fukushima 960-1296, Japan.
| | - Akira Takeda
- Department of Radioecology, Institute for Environmental Sciences, 1-7 Ienomae, Obuchi, Rokkasho, Kamikita, Aomori 039-3212, Japan
| | - Tomoyuki Takahashi
- Institute for Integrated Radiation Nuclear Science, Kyoto University, 2 Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Satoshi Fukutani
- Institute for Integrated Radiation Nuclear Science, Kyoto University, 2 Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Makoto Akashi
- Tokyo Healthcare University, 2-5-1 Higashigaoka, Meguro-ku, Tokyo 152-8558, Japan
| | - Junko Takahashi
- Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
| | - Shinichiro Uematsu
- Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
| | - Ihor Chyzhevskyi
- State Specialized Enterprise "Ecocentre" of the State Agency of Ukraine on Exclusion Zone Management, 6, Shkilna Str., Chornobyl, Kyiv Region 07270, Ukraine
| | - Serhii Kirieiev
- State Specialized Enterprise "Ecocentre" of the State Agency of Ukraine on Exclusion Zone Management, 6, Shkilna Str., Chornobyl, Kyiv Region 07270, Ukraine
| | - Valery Kashparov
- Ukrainian Institute of Agricultural Radiology of the National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv str. 7, Chabany, Kyiv Region 08162, Ukraine
| | - Mark Zheleznyak
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima-shi, Fukushima 960-1296, Japan
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Tani K, Ishigure N, Kim E, Tominaga T, Tatsuzaki H, Akashi M, Kurihara O. Biokinetic model analysis with DTPA administration for a case of accidental inhalation of actinides in Japan. Radiat Prot Dosimetry 2023; 199:2025-2029. [PMID: 37819312 DOI: 10.1093/rpd/ncac224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/21/2022] [Accepted: 10/10/2022] [Indexed: 10/13/2023]
Abstract
Accidental inhalation intake of plutonium isotopes and 241Am occurred at a Pu research facility in Japan in 2017, and the five workers involved in this accident were treated by the administration of Ca/Zn-diethylenetriaminepentaacetic acid (DTPA). For the worker who was most internally exposed, the therapy was continued over 1 y after the accident. Urinary samples collected before and after each administration were subject to bioassay to evaluate the efficacy of the dose reduction. This study performed numerical analyses using a biokinetic model dealing with 241Am-DTPA with reference to the European Coordinated Network on Radiation Dosimetry approach, which assumes that the complex of actinides and Ca/Zn-DTPA is generated in the designated compartments in the biokinetic model. The results of the model prediction well captured the trend of the observed urinary excretion in the long-term bioassay and would be useful to evaluate the efficacy of the Ca/Zn-DTPA administration for the worker involved in the accident.
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Affiliation(s)
- Kotaro Tani
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Nobuhito Ishigure
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Eunjoo Kim
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Takako Tominaga
- Department of Radiation Emergency Medicine, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Hideo Tatsuzaki
- Department of Radiation Emergency Medicine, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Makoto Akashi
- Department of Radiation Emergency Medicine, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Osamu Kurihara
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
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3
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Sogawa R, Ono F, Terao M, Nagano S, Kawabe J, Node K, Akashi M. Correlation Analysis Between Time Awareness and Morningness-Eveningness Preference. J Circadian Rhythms 2023; 21:2. [PMID: 37842163 PMCID: PMC10573578 DOI: 10.5334/jcr.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 09/20/2023] [Indexed: 10/17/2023] Open
Abstract
The circadian clock is adjusted by light inputs via the retinohypothalamic tract. Because environmental light is controllable for modern humans at the individual's preference although under social schedules, individual differences in time-related psychology and behavior may be associated with morningness-eveningness preference (M-E preference). To examine this hypothesis, we used the Time Management Scale and Time Anxiety Scale to quantify time-related psychology and behavior. These scales aim to evaluate "awareness of effective time management and utilization" and "anxiety about uncontrollable time schedule and unexpected time-related outcome", respectively. According to our correlation analysis using mid-sleep time as a marker for M-E preference, we obtained results supporting our hypothesis in the correlation between the M-E preference values and the Time Management Scale scores, with larger "time estimation" and "taking each moment as it comes" scores associated with more morningness and eveningness, respectively. Considering that modern humans likely become night owls under artificial light conditions, it appears plausible that lower awareness of time management leads to more eveningness.
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Affiliation(s)
- Reimi Sogawa
- Department of Clinical Genetics and Genomic Medicine, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama, Japan
| | - Fuminori Ono
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Masahiko Terao
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Shunta Nagano
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Junko Kawabe
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
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Hasegawa T, Ueda N, Yamada SI, Kato S, Iwata E, Hayashida S, Kojima Y, Shinohara M, Tojo I, Nakahara H, Yamaguchi T, Kirita T, Kurita H, Shibuya Y, Soutome S, Akashi M. Correction to: Denosumab-related osteonecrosis of the jaw after tooth extraction and the effects of a short drug holiday in cancer patients: a multicenter retrospective study. Osteoporos Int 2023; 34:1823-1825. [PMID: 37493979 DOI: 10.1007/s00198-023-06833-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Affiliation(s)
- T Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - N Ueda
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - S I Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Kato
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - E Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
- Department of Oral and Maxillofacial Surgery, Kakogawa Central City Hospital, Kakogawa, Japan
| | - S Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Kojima
- Department of Dentistry and Oral Surgery, Kansai Medical University, Hirakata, Japan
| | - M Shinohara
- Department of Oral and Maxillofacial Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - I Tojo
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama, Japan
| | - H Nakahara
- Department of Oral and Maxillofacial Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Yamaguchi
- Department of Preventive Dentistry, Research Field in Dentistry, Medical and Dental Sciences Area, Kagoshima University, Kagoshima, Japan
| | - T Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - H Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Shibuya
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - S Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Abe Y, Takashima Y, Akiyama M, Tsuyama N, Takebayashi K, Nakayama R, Goh VST, Sugai-Takahashi M, Alkebsi L, Ishii K, Kudo K, Sakai A, Kurihara O, Miura T, Suto Y, Akashi M. A preliminary report on retrospective dose assessment by FISH translocation assay in FDNPP Nuclear Emergency Worker Study (NEWS). Radiat Prot Dosimetry 2023; 199:1565-1571. [PMID: 37721063 DOI: 10.1093/rpd/ncad053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 09/19/2023]
Abstract
In Japan, a national project of longitudinal health care and epidemiological research (NEWS) was developed in 2014 to analyse the effects of radiation on human health for workers who responded to the Fukushima Dai-ichi nuclear emergency in 2011. In 2018, peripheral blood for chromosome translocation analysis was collected from 62 workers. Retrospective dose assessment was performed with fluorescence in situ hybridisation translocation (FISH-Tr) assay. The range of estimated doses by FISH-Tr assay was 0-635 mGy, in which 22 workers had estimated doses of more than 189 mGy. Biological dose estimates were five times higher in workers with physically measured total exposure recordings above 70 mGy. It is likely that smoking and medical exposure caused the discrepancy between estimated biological and physical total exposure doses. Thus, there is a possibility that retrospective biodosimetry assessment might over-estimate occupational exposures to workers exposed to chronic radiation during nuclear emergency work.
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Affiliation(s)
- Yu Abe
- Department of Radiation Biology and Protection, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523 Japan
| | - Yoshio Takashima
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Miho Akiyama
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Naohiro Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University, 1 Hikariga-oka, Fukushima 960-1295 Japan
| | - Kai Takebayashi
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki 036-8564, Japan
| | - Ryo Nakayama
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki 036-8564, Japan
| | - Valerie S T Goh
- Department of Radiobiology, Singapore Nuclear Research and Safety Initiative, National University of Singapore, 1 CREATE Way, #04-01 CREATE Tower, 138602 Singapore
| | - Misaki Sugai-Takahashi
- Department of Radiation Life Sciences, Fukushima Medical University, 1 Hikariga-oka, Fukushima 960-1295 Japan
| | - Lobna Alkebsi
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Kotaro Ishii
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Kenichi Kudo
- Department of Radiation Life Sciences, Fukushima Medical University, 1 Hikariga-oka, Fukushima 960-1295 Japan
| | - Akira Sakai
- Department of Radiation Life Sciences, Fukushima Medical University, 1 Hikariga-oka, Fukushima 960-1295 Japan
| | - Osamu Kurihara
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Tomisato Miura
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki 036-8564, Japan
| | - Yumiko Suto
- Department of Radiation Measurement and Dose Assessment, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan
| | - Makoto Akashi
- Tachikawa Faculty of Nursing, Tokyo Healthcare University, 3256 Midorimachi, Tachikawa 109-8590, Japan
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Matsumura R, Node K, Akashi M. Detection of endogenous circadian rhythms of clock gene mRNA expression in mouse lung tissue using slice cultures. STAR Protoc 2023; 4:102280. [PMID: 37149856 DOI: 10.1016/j.xpro.2023.102280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/17/2023] [Accepted: 04/07/2023] [Indexed: 05/09/2023] Open
Abstract
Detection of endogenous circadian rhythms in clock gene mRNA expression requires that mice be sacrificed at regular time intervals over one or more days. This protocol uses culture tissue slices obtained from a single mouse to collect time-course samples. We describe the procedure from preparation of lung slices to rhythmicity analysis of mRNA expression, including details to create handmade culture inserts. This protocol is useful for many mammalian biological clock researchers because it allows a decrease in animal sacrifice. For complete details on the use and execution of this protocol, please refer to Matsumura et al. (2022).1.
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Affiliation(s)
- Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8511, Japan.
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga 849-8501, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8511, Japan.
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Morioka S, Tsuzuki S, Suzuki M, Terada M, Akashi M, Osanai Y, Kuge C, Sanada M, Tanaka K, Maruki T, Takahashi K, Saito S, Hayakawa K, Teruya K, Hojo M, Ohmagari N. Post COVID-19 condition of the Omicron variant of SARS-CoV-2. J Infect Chemother 2022; 28:1546-1551. [PMID: 35963600 PMCID: PMC9365517 DOI: 10.1016/j.jiac.2022.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/18/2022] [Accepted: 08/04/2022] [Indexed: 12/12/2022]
Abstract
Objectives To investigate the prevalence of post coronavirus disease (COVID-19) condition of the Omicron variant in comparison to other strains. Study design A single-center cross-sectional study. Methods Patients who recovered from Omicron COVID-19 infection (Omicron group) were interviewed via telephone, and patients infected with other strains (control group) were surveyed via a self-reporting questionnaire. Data on patients’ characteristics, information regarding the acute-phase COVID-19, as well as presence and duration of COVID-19-related symptoms were obtained. Post COVID-19 condition in this study was defined as a symptom that lasted for at least 2 months, within 3 months of COVID-19 onset. We investigated and compared the prevalence of post COVID-19 condition in both groups after performing propensity score matching. Results We conducted interviews for 53 out of 128 patients with Omicron and obtained 502 responses in the control group. After matching cases with controls, 18 patients from both groups had improved covariate balance of the factors: older adult, female sex, obesity, and vaccination status. There were no significant differences in the prevalence of each post COVID-19 condition between the two groups. The number of patients with at least one post COVID-19 condition in the Omicron and control groups were 1 (5.6%) and 10 (55.6%) (p = 0.003), respectively. Conclusions The prevalence of post Omicron COVID-19 conditions was less than that of the other strains. Further research with a larger sample size is needed to investigate the precise epidemiology of post COVID-19 condition of Omicron, and its impact on health-related quality of life and social productivity.
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Affiliation(s)
- S Morioka
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Emerging and Reemerging Infectious Diseases, Graduate School of Medicine, Tohoku University, Sendai, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan.
| | - S Tsuzuki
- AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - M Suzuki
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Terada
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - M Akashi
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - Y Osanai
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - C Kuge
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Sanada
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Tanaka
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - T Maruki
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Takahashi
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - S Saito
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Hayakawa
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Teruya
- AIDS Clinical Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Hojo
- Division of Respiratory Medicine, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - N Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
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8
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Tatsumoto M, Matsumura R, Endo T, Tokuda IT, Node K, Akashi M. Potential negative effect of total parenteral nutrition on the human circadian clock. Genes Cells 2022; 27:613-620. [DOI: 10.1111/gtc.12976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Muneto Tatsumoto
- Medical Safety Management Center Dokkyo Medical University Hospital 880 Kitakobayashi, Mibu, Shimotsuga Tochigi Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University 1677‐1 Yoshida, Yamaguchi Yamaguchi Japan
| | - Takuyuki Endo
- Department of Neurology Osaka Toneyama Medical Center 5‐1‐1 Toneyama, Toyonaka Osaka Japan
| | - Isao T. Tokuda
- Department of Mechanical Engineering Ritsumeikan University 1‐1‐1 Nojihigashi Kusatsu Shiga Japan
| | - Koichi Node
- Department of Cardiovascular Medicine Saga University 5‐1‐1 Nabeshima, Saga Saga Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University 1677‐1 Yoshida, Yamaguchi Yamaguchi Japan
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Fujimoto R, Ohta Y, Masuda K, Taguchi A, Akiyama M, Yamamoto K, Nakabayashi H, Nagao Y, Matsumura T, Hiroshige S, Kajimura Y, Akashi M, Tanizawa Y. Metabolic state switches between morning and evening in association with circadian clock in non‐diabetic humans. J Diabetes Investig 2022; 13:1496-1505. [PMID: 35429128 PMCID: PMC9434593 DOI: 10.1111/jdi.13810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/30/2022] Open
Abstract
Aims/Introduction Understanding morning–evening variation in metabolic state is critical for managing metabolic disorders. We aimed to characterize this variation from the viewpoints of insulin secretion and insulin sensitivity, including their relevance to the circadian rhythm. Materials and Methods A total of 14 and 10 people without diabetes were enrolled, and underwent a 75‐g oral glucose tolerance test (OGTT) and hyperinsulinemic‐euglycemic clamp study, respectively. Participants completed the OGTT or hyperinsulinemic‐euglycemic clamp at 08.00 hours and 20.00 hours in random order. Before each study, hair follicles were collected. In mice, phosphorylation levels of protein kinase B were examined in the liver and muscle by western blotting. Results Glucose tolerance was better at 08 .00 hours, which was explained by the higher 1‐h insulin secretion on OGTT and increased skeletal muscle insulin sensitivity on hyperinsulinemic‐euglycemic clamp. Hepatic insulin sensitivity, estimated by the hepatic insulin resistance index on OGTT, was better at 20.00 hours. The 1‐h insulin secretion and hepatic insulin resistance index correlated significantly with Per2 messenger ribonucleic acid expression. The change (evening value – morning value) in the glucose infusion rate correlated significantly with the change in non‐esterified fatty acid, but not with clock gene expressions. The change in non‐esterified fatty acid correlated significantly with E4bp4 messenger ribonucleic acid expression and the change in cortisol. In mice, phosphorylation of protein kinase B was decreased in the liver and increased in muscle in the beginning of the active period as, expected from the human study. Conclusions Glucose metabolism in each tissue differed between the morning and evening, partly reflecting lipid metabolism, clock genes and cortisol levels. Deeper knowledge of these associations might be useful for ameliorating metabolic disorders.
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Affiliation(s)
- Ruriko Fujimoto
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Ysuharu Ohta
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
- Department of Diabetes Research Yamaguchi University School of Medicine, Ube Yamaguchi Japan
| | - Konosuke Masuda
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Akihiko Taguchi
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Masaru Akiyama
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Kaoru Yamamoto
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Hiroko Nakabayashi
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Yuko Nagao
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Takuro Matsumura
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Syunsuke Hiroshige
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Yasuko Kajimura
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
| | - Makoto Akashi
- The Research Institute for Time Studies Yamaguchi University Yamaguchi Japan
| | - Yukio Tanizawa
- Department of Endocrinology, Metabolism, Hematological Science and Therapeutics Yamaguchi University Graduate School of Medicine Ube Yamaguchi Japan
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Akashi M, Maekawa K. Corrigendum: Medical management of heavily exposed victims: an experience at the Tokaimura criticality accident (2021 J. Radiol. Prot.41 S391). J Radiol Prot 2022; 42:019501. [PMID: 34874298 DOI: 10.1088/1361-6498/ac3fa2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Makoto Akashi
- Faculty and Graduate School of Nursing, Tokyo Healthcare University, Tokyo, Japan
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11
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Akashi M, Maekawa K. Medical management of heavily exposed victims: an experience at the Tokaimura criticality accident. J Radiol Prot 2021; 41:S391-S405. [PMID: 34525457 DOI: 10.1088/1361-6498/ac270d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
A criticality accident occurred at the uranium conversion plant in Tokaimura, Ibaraki Prefecture, Japan on 30 September 1999. When uranyl nitrate was overloaded to a critical mass level, uncontrolled fission reaction occurred. A procedure was carried out according to the JCO manual, although not an officially approved manual. Three workers were heavily exposed to neutrons andγ-rays produced by nuclear fission, and they subsequently developed acute radiation syndrome (ARS). The average doses to the whole body of the three workers were approximately 25, 9, and 3 GyEq (biologically equivalent dose ofγ-exposure), respectively; dose distribution analysis later revealed extreme heterogeneity of these doses in two workers. They were triaged according to the predicted clinical needs. Two of these workers developed severe bone marrow failure and received haematopoietic stem cell transplantation: one with peripheral stem cell transplantation from his Human Leukocyte Antigen compatible sister and the other with umbilical cord blood transplantation. The graft was initially successful in both workers; autologous haematopoietic recovery was observed after donor/recipient mixed chimerism in one of them. Despite of all medical efforts available including haematopoietic stem cell transplantation, investigational drugs, skin graft, two workers died of multiple organ involvement and failure 83 and 211 days after the accident, respectively. Clinically as well as pathologically, the direct cause of death was deemed to be intractable gastrointestinal (GI) bleeding in one, and thoraco-abdominal compartment syndrome due to dermal fibrosis/sclerosis in the other. The third worker also developed bone marrow suppression but was treated with granulocyte colony-stimulating factor. He recovered without major complications and is now under periodical medical follow-up. These experiences suggest that treatment of bone marrow is not a limiting factor for saving the life of ARS victims severely exposed. Successful treatment of other organs such as lungs, skin, and GI tract is also essential. Furthermore, the whole-body dose may not always reflect the prognosis of ARS victims because of the nature of accidental exposure, heterogenous exposure.
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Affiliation(s)
- Makoto Akashi
- Faculty and Graduate School of Nursing, Tokyo Healthcare University, Tokyo, Japan
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12
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Hasegawa T, Ueda N, Yamada SI, Kato S, Iwata E, Hayashida S, Kojima Y, Shinohara M, Tojo I, Nakahara H, Yamaguchi T, Kirita T, Kurita H, Shibuya Y, Soutome S, Akashi M. Denosumab-related osteonecrosis of the jaw after tooth extraction and the effects of a short drug holiday in cancer patients: a multicenter retrospective study. Osteoporos Int 2021; 32:2323-2333. [PMID: 33997909 DOI: 10.1007/s00198-021-05995-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/05/2021] [Indexed: 12/15/2022]
Abstract
UNLABELLED Pre-existing inflammation, corticosteroid therapy, periapical periodontitis, longer duration of denosumab therapy, and female sex were significantly associated with an increased risk of denosumab-related osteonecrosis of the jaw after tooth extraction in patients with cancer on oncologic doses of denosumab. A short drug holiday did not protect against this complication. INTRODUCTION This study retrospectively investigated the relationship between various risk factors, including brief discontinuation of denosumab, and development of denosumab-related osteonecrosis of the jaw (DRONJ) after tooth extraction in patients with cancer who were receiving oncologic doses of this agent. METHODS Data were collected on demographic characteristics, duration of denosumab therapy, whether or not denosumab was discontinued before tooth extraction (drug holiday), duration of discontinuation, presence of pre-existing inflammation, and whether or not additional surgical procedures were performed. Risk factors for DRONJ after tooth extraction were evaluated by univariate and multivariate analyses. RESULTS A total of 136 dental extractions were performed in 72 patients (31 men, 41 women) with cancer who were receiving oncologic doses of denosumab. Post-extraction DRONJ was diagnosed in 39 teeth (28.7%) in 25 patients. Tooth extraction was significantly associated with development of DRONJ only in patients with pre-existing inflammation (odds ratio [OR] 243.77), those on corticosteroid therapy (OR 73.50), those with periapical periodontitis (OR 14.13), those who had been taking oncologic doses of denosumab for a longer period (OR 4.69), and in women (OR 1.04). There was no significant difference in the occurrence of DRONJ between patients who had a drug holiday before tooth extraction and those who did not. CONCLUSIONS These findings suggest that inflamed teeth should be extracted immediately in patients with cancer who are receiving oncologic doses of denosumab. Drug holidays have no significant impact on the risk of DRONJ.
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Affiliation(s)
- T Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - N Ueda
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - S I Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Kato
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - E Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
- Department of Oral and Maxillofacial Surgery, Kakogawa Central City Hospital, Kakogawa, Japan
| | - S Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Kojima
- Department of Dentistry and Oral Surgery, Kansai Medical University, Hirakata, Japan
| | - M Shinohara
- Department of Oral and Maxillofacial Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - I Tojo
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama, Japan
| | - H Nakahara
- Department of Oral and Maxillofacial Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Yamaguchi
- Department of Preventive Dentistry, Research Field in Dentistry, Medical and Dental Sciences Area, Kagoshima University, Kagoshima, Japan
| | - T Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - H Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Shibuya
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - S Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Tominaga T, Shimomura S, Tanosaki S, Kobayashi N, Ikeda T, Yamamoto T, Tamura T, Umemura S, Horibuchi-Matsusaki S, Hachiya M, Akashi M. Effects of the chelating agent DTPA on naturally accumulating metals in the body. Toxicol Lett 2021; 350:283-291. [PMID: 34371142 DOI: 10.1016/j.toxlet.2021.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 07/08/2021] [Accepted: 08/03/2021] [Indexed: 01/12/2023]
Abstract
Diethylenetriaminepentaacetate (DTPA) is the most widely used chelating agent for Pu and Am. Volunteers were assigned to receive intravenous injections or aerosol inhalations of 1 g of DTPA on days 1-4; volunteers received once daily injections of CaDTPA or ZnDTPA, CaDTPA inhalation as an aerosol, or CaDTPA injection on day 1 and ZnDTPA on days 2-4. CaDTPA injection or inhalation increased the excretion rates of Zn in urine with concomitantly reduced levels of serum Zn. Injection of CaDTPA reduced activities of serum alkaline phosphatase (AP) in parallel with the kinetics of Zn, whereas CaDTPA and ZnDTPA injection reduced activities of lactate dehydrogenase (LDH), and reduced activities of creatinine kinase (CK) were observed upon CaDTPA injection and its inhalation. Intravenous administration of CaDTPA and ZnDTPA enhanced excretion rates of Mn in urine, whereas transient reduction of Mn levels in serum was detected only via CaDTPA injection. Both CaDTPA and ZnDTPA transiently reduced levels of Mg in serum without affecting the excretion rates. On the other hand, both DTPAs increased excretion rates of toxic metals such as Pb and Cd, and CaDTPA also increased the rates of Hg. These results suggest that DTPA, and especially CaDTPA, removes essential metals and that the activities of these metalloenzymes are good indicators for the imbalance of essential metals during the DTPA administration. Our results also show that CaDTPA injection is more potent for removing these metals than ZnDTPA and inhalation of CaDTPA, and DTPA may be useful for the treatment of acute heavy metal poisoning with Pb, Cd, or Hg.
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Affiliation(s)
- Takako Tominaga
- National Institute of Quantum and Radiological Science and Technology, Chiba, 265-8555, Japan.
| | | | - Sakae Tanosaki
- Fraternity Memorial Hospital, Sumida, Tokyo, 130-8587, Japan.
| | | | - Takashi Ikeda
- Shizuoka Cancer Center, Nagaizumi, Shizuoka, 411-8777, Japan.
| | - Tetsuo Yamamoto
- Japan Ground Self-Defense Force (JGSDF), Setagaya, Tokyo, 154-8532, Japan.
| | - Taiji Tamura
- Kubokawa Hospital, Shimanto, Kochi, 786-0002, Japan.
| | - Satoshi Umemura
- Self Defense Forces Central Hospital, Setagaya, Tokyo, 154-8532, Japan.
| | | | - Misao Hachiya
- Nuclear Safety Technology Center, Bunkyo, Tokyo, 112-8604, Japan.
| | - Makoto Akashi
- Tokyo Healthcare University, Meguro, Tokyo, 152-8558, Japan.
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Ogata T, Murooka M, Akashi M, Ishitsuka A, Miyazaki A, Osawa S, Ishikawa K, Tanaka-Taya K, Uehara R. The period from prodromal fever onset to rash onset in laboratory-confirmed rubella cases: a cross-sectional study. BMC Infect Dis 2021; 21:442. [PMID: 33992076 PMCID: PMC8122568 DOI: 10.1186/s12879-021-06158-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 05/04/2021] [Indexed: 11/17/2022] Open
Abstract
Background In resource-limited settings, where rubella is endemic, it is difficult to determine which sporadic case should be tested for rubella. The study aimed to provide useful evidence to help screen rubella cases for real-time reverse transcriptase-polymerase chain reaction (RT-PCR) examination for rubella in resource-limited settings. Method Suspected rubella patients identified by a physician and brought to the notice of the Ryugasaki public health center or the Tsuchiura public health center were enrolled from April 2018 through December 2019. The inclusion criterion was a confirmed rubella diagnosis based on laboratory tests. We studied the distribution of the time from the onset of fever until the onset of rash. Results The study included 86 cases with simultaneous presentation of fever and rash. Twenty-nine cases had confirmed rubella based on the laboratory diagnosis. Among these, the time from the onset of fever until the onset of rash was limited to − 1 day to 2 days. The number of rubella cases was the highest when the onset of rash was on the following day of the onset of fever. Of the 78 patients who underwent the RT-PCR test, 48% tested positive for rubella among those with a time from the onset of fever to the onset of rash between − 1 day and 2 days (22 out of 46, 95% confidence interval 34–62%); no positive results (0 out of 30, 95% confidence interval - 14%) were seen in patients with a time from fever to rash onset ≥3 days. Conclusion The period from the onset of fever to the onset of rash was limited to − 1 day to 2 days among confirmed rubella patients. If the period from onset of fever to the onset of rash was ≥3 days for a patient, the likelihood of rubella was low.
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Affiliation(s)
- Tsuyoshi Ogata
- Itako Public Health Center of Ibaraki Prefectural Government, Itako, 311-2422, Japan.
| | - Maki Murooka
- Ryugasaki Public Health Center of Ibaraki Prefectural Government, Ryugasaki, 301-0822, Japan
| | - Makoto Akashi
- Ryugasaki Public Health Center of Ibaraki Prefectural Government, Ryugasaki, 301-0822, Japan
| | - Akemi Ishitsuka
- Ryugasaki Public Health Center of Ibaraki Prefectural Government, Ryugasaki, 301-0822, Japan
| | - Akari Miyazaki
- Tsuchiura Public Health Center of Ibaraki Prefectural Government, Tsuchiura, 300-0812, Japan
| | - Shuuichi Osawa
- Ibaraki Prefectural Institute of Public Health of Ibaraki Prefectural Government, Mito, 310-0852, Japan
| | - Kanako Ishikawa
- Ibaraki Prefectural Institute of Public Health of Ibaraki Prefectural Government, Mito, 310-0852, Japan
| | | | - Ritei Uehara
- Department of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
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Kim E, Yajima K, Igarashi Y, Tani K, Hashimoto S, Nakano T, Akashi M, Kurihara O. Intake Ratio of 131I to 137CS Derived from Thyroid and Whole-body Doses to Residents of Iwaki City in Japan's Fukushima Prefecture. Health Phys 2021; 120:387-399. [PMID: 33229943 DOI: 10.1097/hp.0000000000001345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
ABSTRACT It is very important to determine the precise internal thyroid doses of Fukushima residents involved in the 2011 Fukushima nuclear disaster, particularly for small children. This has been challenging due to the lack of direct human measurements to identify 131I, the biggest contributor to the thyroid doses. We previously used a dataset of late whole-body counter (WBC) measurements targeting 134Cs and 137Cs for the thyroid dose estimation in comparison with the intake ratios of 131I to 137Cs (or 134Cs) derived from thyroid and whole-body doses individually obtained from different subject groups, assuming simultaneous acute intake via inhalation. Herein, we applied the same method to the doses of residents in Iwaki city (located south of the Fukushima Daiichi Nuclear Power Plant) with a relatively high activity ratio (131I/137Cs) for the ground deposition density. Our analyses revealed that the intake ratio (131I/137Cs) for the Iwaki residents was 4.2-4.3, which is relatively consistent with the values obtained in other studies (average 3.0-5.0). No regional difference in the intake ratios from other areas was observed, but further studies are required to determine the accurate intake ratio in the early phase of the accident, in particular focusing on the reasonable interpretation of results of the late WBC measurements to evaluate the actual Cs intake.
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Affiliation(s)
- Eunjoo Kim
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | - Kazuaki Yajima
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | | | - Kotaro Tani
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | - Shozo Hashimoto
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | - Takashi Nakano
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | | | - Osamu Kurihara
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
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Igarashi Y, Kim E, Hashimoto S, Tani K, Yajima K, Iimoto T, Ishikawa T, Akashi M, Kurihara O. Difference in the Cesium Body Contents of Affected Area Residents Depending on the Evacuation Timepoint Following the 2011 Fukushima Nuclear Disaster. Health Phys 2020; 119:733-745. [PMID: 32384372 DOI: 10.1097/hp.0000000000001249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Estimating the internal thyroid dose received by residents involved in the 2011 Fukushima Daiichi Nuclear Power Plant (FDNPP) accident has been a challenging task because of the shortage of direct human measurements related to the largest contributing radioisotope to the dose, I. In a previous dose estimation, we used the results of whole-body counter (WBC) measurements targeting Cs and Cs, based on the assumption that these radioisotopes were incorporated at the same time as I in the early phase of the accident. The main purpose of this study was to clarify whether the trace of the early intake remained in the WBC measurements that were started several months after the accident. In the present work, WBC data of 1,639 persons from Namie town, one of the heavily contaminated municipalities, were analyzed together with their evacuation behavior data. The results demonstrated that the cesium detection rate in the WBC results was several times higher in the late evacuees [who evacuated outside the 20-km radius of the FDNPP at 3:00 p.m. (Japanese Local Time) on 12 March or later] compared to the prompt evacuees (who evacuated before 3:00 p.m. on 12 March). Among the adults, the cesium detection rates (and the 90th percentile values of the Cs intake) of the prompt and late evacuees were about 20% (5.4 × 10 Bq) and 60% (1.6 × 10 Bq), respectively. Approximately 20% of the individuals analyzed were categorized as late evacuees. These differences in cesium would be caused by exposure to the radioactive plume in the afternoon on 12 March, which was likely to influence the late evacuees. On the other hand, the intake on 15 March, when the largest release event occurred, was expected to be relatively small for Namie town's residents. In conclusion, the trace of the early intake remained in the WBC measurements, although this would not necessarily be true for all subjects. The results obtained from this study would provide useful information for the reconstruction of the early internal thyroid doses from radioiodine in the future.
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Affiliation(s)
| | - Eunjoo Kim
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Shozo Hashimoto
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Kotaro Tani
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Kazuaki Yajima
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | | | - Tetsuo Ishikawa
- Fukushima Medical University, 1-Hikarigaoka, Fukushima-city, Fukushima, Japan
| | | | - Osamu Kurihara
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
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Kiyotoki S, Nishikawa J, Nagata N, Niikura R, Doyama H, Imagawa A, Hasatani K, Hatta W, Sumiyoshi T, Nebiki H, Nagami Y, Nishida T, Kakushima N, Iguchi M, Tomida H, Inoue T, Kuribayashi S, Narasaka T, Hikichi T, Yada T, Ochiai Y, Furuhashi H, Yoshio T, Mori H, Yamauchi K, Kitamura K, Fujita T, Mabe K, Mikami T, Goto A, Akashi M, Hamamoto Y, Fujishiro M, Sakaida I. Exploration of the characteristics of chronotypes in upper gastrointestinal tract diseases: a multicenter study in Japan. Chronobiol Int 2020; 38:534-542. [PMID: 33059467 DOI: 10.1080/07420528.2020.1830791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Characteristics of the chronotypes of patients with gastrointestinal disease are unknown. We evaluated chronotypes of patients with upper gastrointestinal diseases with the Munich ChronoType Questionnaire (MCTQ). A total of 2027 subjects from 29 institutions in Japan who had undergone esophagogastroduodenoscopy were asked to answer the MCTQ. The subjects' chronotypes were divided into three groups (early, intermediate, and late chronotype) using the sleep-corrected mid-point of sleep on free days (MSFSC) values. According to their endoscopic diagnosis and abdominal symptoms, the subjects were divided into the reflux esophagitis (RE) group, gastroduodenal ulcer (GDU) group, upper gastrointestinal carcinoma (CA) group, functional dyspepsia (FD) group, non-FD group, and control group. In total, 1128 subjects were eligible for the analysis. The MSFSC (average ± standard deviation, clock hours, h) of each disease group was as follows: control group: 02.51 ± 1.22, non-FD group: 02.69 ± 1.14, FD group: 02.91 ± 1.19, RE group: 02.58 ± 1.05, GDU group: 02.47 ± 1.31, and CA group: 02.11 ± 1.08 h. Compared to the control group, the rate of late chronotype of the FD group significantly increased to 33.3%, whereas that of early chronotype of the CA group significantly increased to 38.3% (P = .0177 and 0.0036, respectively). In both the FD and CA groups, chronotype was the independent factor related to the diseases. The adjusted odds ratio of late chronotype to early chronotype was 3.01 [95% CI, 1.23-7.35] in the FD group and 0.44 [95% CI, 0.23-0.85] in the CA group. In conclusion, late chronotype was common in patients with FD, and early chronotype was common in patients with upper gastrointestinal carcinoma.
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Affiliation(s)
- Shu Kiyotoki
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Jun Nishikawa
- Department of Gastroenterology, Shuto General Hospital, Yanai, Japan
| | - Naoyoshi Nagata
- Department of Gastroenterological Endoscopy, Tokyo Medical University, Tokyo, Japan.,Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Ryota Niikura
- Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| | - Hisashi Doyama
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | | | - Kenkei Hasatani
- Department of Gastroenterology, Fukui Prefectural Hospital, Fukui, Japan
| | - Waku Hatta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | | | - Hiroko Nebiki
- Department of Gastroenterology, Osaka City General Hospital, Osaka, Japan
| | - Yasuaki Nagami
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tsutomu Nishida
- Department of Gastroenterology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Naomi Kakushima
- Division of Endoscopy, Shizuoka Cancer Center, Suntougun, Japan
| | - Mikitaka Iguchi
- Second Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan
| | - Hideomi Tomida
- Department of Gastroenterology, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Takuya Inoue
- Department of Gastroenterology and Hepatology, Osaka General Medical Center, Osaka, Japan
| | - Shiko Kuribayashi
- Department of Gastroenterology and Hepatology, Gunma University Hospital, Maebashi, Japan
| | - Toshiaki Narasaka
- Department of Gastroenterology, University of Tsukuba, Tsukuba, Japan
| | - Takuto Hikichi
- Department of Endoscopy, Fukushima Medical University Hospital, Fukushima, Japan
| | - Tomoyuki Yada
- Department of Gastroenterology & Hepatology, Kohnodai Hospital, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Yorinari Ochiai
- Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan
| | - Hiroto Furuhashi
- Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan
| | - Toshiyuki Yoshio
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Hideki Mori
- Department of Gastroenterology, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Kenji Yamauchi
- Department of Gastroenterology, Mitoyo General Hospital, Kannonji, Japan
| | - Kazuya Kitamura
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tomoki Fujita
- Department of Medical Gastroenterology, Otaru-Ekisaikai Hospital, Otaru, Japan
| | - Katsuhiro Mabe
- Junpukai Health Maintenance Center Kurashiki, Kurashiki, Japan
| | - Tatsuya Mikami
- Division of Endoscopy, Hirosaki University Hospital, Hirosaki, Japan
| | - Atsushi Goto
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
| | - Yoshihiko Hamamoto
- Department of Information Science and Engineering, Yamaguchi University Graduate School of Sciences and Technology for Innovation, Ube, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Isao Sakaida
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
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18
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Nishida A, Miyawaki Y, Node K, Akashi M. Ex vivo Culture Assay Using Human Hair Follicles to Study Circadian Characteristics. Bio Protoc 2020; 10:e3638. [PMID: 33659309 DOI: 10.21769/bioprotoc.3638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 03/30/2020] [Accepted: 04/23/2020] [Indexed: 11/02/2022] Open
Abstract
Ex vivo culture assays of biopsy specimens are advantageous for the experimental evaluation of human circadian characteristics. We developed a simple and non-invasive experimental evaluation method for monitoring the expression of circadian clock genes in an ex vivo culture assay using human hair follicles. This method imposes little burden on subjects. This assay is useful for validating correlations between circadian characteristics in hair follicles and intrinsic characteristics observed in physiological and behavioral studies. While they should be further validated, this ex vivo method constitutes a useful tool for estimating in vivo circadian characteristics.
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Affiliation(s)
- Atsuhiro Nishida
- The Research Institute for Time Studies, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Yoshiki Miyawaki
- The Research Institute for Time Studies, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, Nabeshima, Saga, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, Yoshida, Yamaguchi, Japan
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19
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Endo T, Matsumura R, Tokuda IT, Yoshikawa T, Shigeyoshi Y, Node K, Sakoda S, Akashi M. Bright light improves sleep in patients with Parkinson's disease: possible role of circadian restoration. Sci Rep 2020; 10:7982. [PMID: 32409683 PMCID: PMC7224174 DOI: 10.1038/s41598-020-64645-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 04/13/2020] [Indexed: 12/04/2022] Open
Abstract
Parkinson’s disease (PD) is one of the most common neurodegenerative disorders. Among the most common manifestations of PD are sleep problems, which are coupled with the adverse effects of dopaminergic therapies (DT). A non-pharmacological solution for these sleep problems has been sought to avoid additional pharmacological intervention. Here, we show that bright light therapy (BLT) is effective for improving sleep in Japanese PD patients receiving DT. Furthermore, experimental evaluation of peripheral clock gene expression rhythms revealed that most PD patients receiving DT who experienced improved sleep following BLT showed a circadian phase shift, indicating the existence of a correlation between circadian modulation and sleep improvement. Conversely, this result indicates that sleep problems in PD patients receiving DT may arise at least in part as a result of circadian dysfunction. Indeed, we found that chronic dopaminergic stimulation induced a rapid attenuation of autonomous oscillations of clock gene expression in ex vivo cultured mouse suprachiasmatic nucleus (SCN) at the single neuron level. In conclusion, BLT is a promising medical treatment for improving sleep in PD patients receiving DT. This BLT-induced improvement may be due to the restoration of circadian function.
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Affiliation(s)
- Takuyuki Endo
- Department of Neurology, Osaka Toneyama Medical Center, 5-1-1 Toneyama, Toyonaka, Osaka, 560-8552, Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, 753-8511, Japan
| | - Isao T Tokuda
- Department of Mechanical Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Tomoko Yoshikawa
- Department of Anatomy and Neurobiology, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka, 589-8511, Japan.,Organization for International Education and Exchange, University of Toyama, 3190 Gofuku, Toyama, Toyama, 930-8555, Japan
| | - Yasufumi Shigeyoshi
- Department of Anatomy and Neurobiology, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka, 589-8511, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, 849-8501, Japan
| | - Saburo Sakoda
- Department of Neurology, Osaka Toneyama Medical Center, 5-1-1 Toneyama, Toyonaka, Osaka, 560-8552, Japan.,Organic Clinic, 3-1-57 honmachi, Toyonaka, Osaka, 560-0021, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, 753-8511, Japan.
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20
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Imamura Y, Kiyota N, Suzuki C, Koyama T, Kimbara S, Shinomiya H, Otsuki N, Hasegawa T, Toyoda M, Funakoshi Y, Akashi M, Sasaki R, Nibu K, Minami H. Prognostic value of the modified Glasgow Prognostic Score for head and neck cancer in the era of immunotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Kim E, Yajima K, Hashimoto S, Tani K, Igarashi Y, Iimoto T, Ishigure N, Tatsuzaki H, Akashi M, Kurihara O. Reassessment of Internal Thyroid Doses to 1,080 Children Examined in a Screening Survey after the 2011 Fukushima Nuclear Disaster. Health Phys 2020; 118:36-52. [PMID: 31318730 DOI: 10.1097/hp.0000000000001125] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The dose reconstruction of populations potentially affected by the accident at the Fukushima Daiichi nuclear power plant in March 2011 is of great importance. However, it has been difficult to assess internal thyroid doses to Fukushima residents (mainly from their intake of I) due to the lack of direct measurements. For the residents, only about 1,300 data points related to I are available, and 1,080 of the data points were obtained from the screening campaign that was conducted by the Nuclear Emergency Response Local Headquarters at the end of March 2011 in Kawamata Town, Iwaki City, and Iitate Village. Here, we reassessed thyroid doses to 1,080 subjects aged ≤15 y old using new age-specific conversion factors to determine I thyroid contents from net signals of the devices used, with consideration for the possible uncertainty related to the measurements. The results demonstrated that thyroid equivalent doses to the subjects were <30 mSv (excluding outliers). We also demonstrate dose distributions of each age group from the above three municipalities and those of subjects from Minamisoma City and Fukushima City. One of the findings was that the I intake was similar among different age groups in each of the three municipalities. This was consistent with the assumption that ingestion was a dominant route of intake rather than inhalation. The range of thyroid doses to Iitate Village residents was similar to that to Iwaki City residents even though the I concentration in tap water was much higher in Iitate Village than Iwaki City. The range of thyroid doses to Minamisoma City residents was similar to that to Iitate Village and Iwaki City residents, and the range for Fukushima City residents was smallest among the five municipalities. Since the major route of intake has remained unclear, this paper presents the plausible upper and lower thyroid doses, between which the actual doses are thought to mostly exist, based on two intake scenarios: single inhalation and repeated ingestion. Further research is thus necessary to extract useful evidence from the individual evacuation behaviors for improving the present internal thyroid dose assessment.
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Affiliation(s)
- Eunjoo Kim
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Kazuaki Yajima
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Shozo Hashimoto
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Kotaro Tani
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | | | | | - Nobuhito Ishigure
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Hideo Tatsuzaki
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Makoto Akashi
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Osamu Kurihara
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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22
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Shirotani S, Jujo K, Mizobuchi K, Ishida I, Minami Y, Haruki S, Akashi M, Nakao M, Hagiwara N. P1958Baseline glycated hemoglobin level was differently associated with long-term prognosis in peripheral artery disease patients with and without hemodialysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Diabetes (DM) is the leading cause of induction of hemodialysis (HD), and both are major prognostic factors in patients with peripheral artery disease (PAD). However, the prognostic importance of baseline glycated hemoglobin (HbA1c) levels in PAD patients with and without HD is yet to be elucidated.
Purpose
We hypothesized that baseline HbA1c levels had different prognostic impacts after endovascular therapy (EVT) in between PAD patients with and those without regular HD.
Methods
This observational study included 643 consecutive patients who received EVT between 2013 and 2017. Each of 313 HD patients and 330 Non-HD patients was respectively divided into 2 groups by the comorbidity of diabetes, and DM patients were further divided into 3 subgroups depending on HbA1c level at the time of EVT; DM-Low (HbA1c: <6.0%), DM-Mid (6.1–7.0%), and DM-High (>7.1%) groups. The primary endpoint of this study was major amputation-free survival (AFS).
Results
HD group included significantly more patients presenting critical limb ischemia than Non-HD group (46.6% vs. 30.0%, p<0.001). During the observation period after EVT, there were 81 events (25.9%), including 55 death and 26 major amputations in HD group, and 45 events (13.6%), including 30 death and 15 major amputations in Non-HD group. Kaplan-Meier analysis revealed that DM patients had a significantly higher AFS rate in HD group (Log-rank: p=0.003, Figure A). In contrast, in Non-HD group, there was no statistical difference in AFS between DM and Non-DM patients (p=0.36). In Cox regression analysis in HD group, the higher HbA1c-DM group showed the higher hazard ratio (HR) for AFS (p=0.039, Figure B), and DM patients with HbA1c >6.0% had significantly higher HR than Non-DM patients. Whereas, in Non-HD group, HbA1c-DM class adversely associated with HR for AFS (p=0.003), even any classes did not reach statistical differences from Non-DM patients.
Figure 1
Conclusions
Comorbidity of diabetes at the time of EVT worsened long-term prognosis in PAD patients receiving regular HD, but not in those without HD. Additionally, baseline HbA1c levels oppositely affected prognosis in PAD patients with and without HD.
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Affiliation(s)
- S Shirotani
- Tokyo Womens Medical University, Tokyo, Japan
| | - K Jujo
- Tokyo Womens Medical University, Tokyo, Japan
| | - K Mizobuchi
- Tokyo Womens Medical University, Tokyo, Japan
| | - I Ishida
- Tokyo Womens Medical University, Tokyo, Japan
| | - Y Minami
- Tokyo Womens Medical University, Tokyo, Japan
| | - S Haruki
- Tokyo Womens Medical University, Tokyo, Japan
| | - M Akashi
- Tokyo Womens Medical University, Tokyo, Japan
| | - M Nakao
- Tokyo Womens Medical University, Tokyo, Japan
| | - N Hagiwara
- Tokyo Womens Medical University, Tokyo, Japan
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23
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Sawai Y, Okamoto T, Muranaka Y, Nakamura R, Matsumura R, Node K, Akashi M. In vivo evaluation of the effect of lithium on peripheral circadian clocks by real-time monitoring of clock gene expression in near-freely moving mice. Sci Rep 2019; 9:10909. [PMID: 31358797 PMCID: PMC6662689 DOI: 10.1038/s41598-019-47053-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 07/01/2019] [Indexed: 01/31/2023] Open
Abstract
Lithium has been used as a mood stabilizer to treat human bipolar disorders for over half a century. Several studies have suggested the possibility that the efficacy of lithium treatment results in part from the amelioration of circadian dysfunction. However, the effect of lithium on clock gene expression has not yet been investigated in vivo because continuous measurement of gene expression in organs with high time resolution over a period of several days is difficult. To resolve this issue, we attached a small photo multiplier tube (PMT) tightly to the body surface of transgenic mice carrying a reporter gene such that the photon input window faced target organs such as the liver and kidney and succeeded in long-term continuous measurement of circadian gene expression in semi-freely moving mice over periods of several weeks. Using this simple method, we clearly showed that lithium causes circadian period elongation in peripheral clock gene expression rhythms in vivo. Further development of our detection system to maturity will aid a wide range of research fields in medicine and biology.
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Affiliation(s)
- Yuka Sawai
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Takezo Okamoto
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Yugo Muranaka
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Rino Nakamura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan.
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24
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Kunishima N, Tani K, Kurihara O, Kim E, Nakano T, Kishimoto R, Tsuchiya H, Omatsu T, Tatsuzaki H, Tominaga T, Watanabe S, Ishigure N, Akashi M. Numerical Simulation Based on Individual Voxel Phantoms for a Sophisticated Evaluation of Internal Doses Mainly From 131I in Highly Exposed Workers Involved in the TEPCO Fukushima Daiichi NPP Accident. Health Phys 2019; 116:647-656. [PMID: 30747754 DOI: 10.1097/hp.0000000000000995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
As a response to the Tokyo Electric Power Company's Fukushima Daiichi nuclear power plant accident in 2011, seven TEPCO workers whose exposure doses were expected to be >250 mSv (a tentative dose limit stipulated by the Japanese central authority) attended Japan's National Institute for Radiological Sciences for additional internal dose measurements. The National Institute for Radiological Sciences examination revealed that these workers' internal doses came mainly from their intake of the radionuclide I during emergency operations. In this study, we performed numerical simulations based on individual volume-pixel (voxel) phantoms of six of the seven workers for a more sophisticated evaluation of their internal doses, taking into account the individual thyroid size and other specific parameters. The voxel phantoms were created from magnetic resonance imaging scan images. As a result, the individual thyroid volumes ranged from 6.5 to 28.2 cm and were considerably smaller than the reference value (~20 cm) adopted in the International Commission on Radiation Protection's dosimetric model for four of the six subjects. Compared to the original estimates of the thyroid absorbed dose, our preliminary evaluation revealed values that were increased by approximately 3-fold or decreased by 30% at maximum. A wide difference in the individual thyroid size would be one of the significant modifiers in the current dose estimation of subjects of the ongoing epidemiological study project. The present simulations also provided evidence that the direct thyroid measurements by the National Institute for Radiological Sciences to determine the workers' I thyroid contents were sufficiently accurate.
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Affiliation(s)
- Naoaki Kunishima
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
- Self-Defense Forces Central Hospital, Tokyo, Japan
| | - Kotaro Tani
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Osamu Kurihara
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Eunjoo Kim
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Takashi Nakano
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Riwa Kishimoto
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Hiroki Tsuchiya
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Tokuhiko Omatsu
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Hideo Tatsuzaki
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Takako Tominaga
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Sadahiro Watanabe
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
- Self-Defense Forces Central Hospital, Tokyo, Japan
| | - Nobuhito Ishigure
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, Chiba, Japan
| | - Makoto Akashi
- National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
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25
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Kakei Y, Akashi M, Hasegawa T, Minamikawa T, Komori T. Postoperative pneumonia after oral oncologic surgery with simultaneous reconstruction. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Nishida A, Miyawaki Y, Node K, Akashi M. A Method for Culturing Mouse Whisker Follicles to Study Circadian Rhythms ex vivo. Bio Protoc 2019; 9:e3148. [PMID: 33654893 DOI: 10.21769/bioprotoc.3148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 11/30/2018] [Accepted: 12/10/2018] [Indexed: 11/02/2022] Open
Abstract
Ex vivo tissue-culture experiments are often performed in the field of circadian biology. The major aim of these experiments is to evaluate circadian characteristics such as period length at the tissue-autonomous level by monitoring clock gene expression in real time. This culture method is also used to examine the tissue specificity of circadian entrainment factors. However, an ex vivo culture method for monitoring clock gene expression in hair follicles has yet to be established. In the present study, we developed an experimental method to analogize and evaluate circadian characteristics by performing ex vivo culture of mouse whisker follicles and monitoring clock gene expression in real time.
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Affiliation(s)
- Atsuhiro Nishida
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Yoshiki Miyawaki
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi, Japan
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27
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Kim E, Kurihara O, Ohno M, Yajima K, Nakano T, Tani K, Ishigure N, Takada C, Momose T, Tominaga T, Tatsuzaki H, Akashi M. Dose assessment for workers involved in an internal contamination accident with Pu at JAEA’s Oarai R&D Center. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191403014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Tatsuzaki H, Tominaga T, Kim E, Watanabe S, Tsutsumi Y, Sagara M, Takada C, Momose T, Kurihara O, Akashi M. AN ACCIDENT OF INTERNAL CONTAMINATION WITH PLUTONIUM AND AMERICIUM AT A NUCLEAR FACILITY IN JAPAN: A PRELIMINARY REPORT AND THE POSSIBILITY OF DTPA ADMINISTRATION ADDING TO THE DIAGNOSIS. Radiat Prot Dosimetry 2018; 182:98-103. [PMID: 30165696 DOI: 10.1093/rpd/ncy145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 06/08/2023]
Abstract
This article introduces the first accident of internal contamination with plutonium (Pu) or americium (Am) in Japan for which treatment was carried out. An accident of internal contamination with Pu and Am occurred at a Pu research facility at Oarai-town of Ibaraki prefecture in Japan. A plastic bag containing these radionuclides ruptured when five workers were inspecting a storage container in a hood. As a consequence, these workers were internally contaminated with Pu and Am. Although contamination on the body surface was observed in all five workers, a positive nasal swab was detected in only three of them. A chelating agent, calcium diethylenetriaminepenta-acetate (CaDTPA), was administered to all of them including the two workers without a positive nasal swab. However, bioassay detected a significant amount of Pu and Am in urine after administration of DTPA in these two workers, whereas the levels of these nuclides were below minimum detectable levels in urine before the administration. Since the prevalence of adverse reactions in DTPAs is low, the present results suggest that administration of DTPA can be used for the diagnosis of internal contamination even when a nasal swab is negative or contamination around body orifices is not detected.
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Affiliation(s)
- Hideo Tatsuzaki
- Radiation Emergency Medicine Center, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Takako Tominaga
- Radiation Emergency Medicine Center, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Eunjoo Kim
- Department of Radiation Measurement and Dose Assessment, NIRS, QST, Japan
| | - Sadahiro Watanabe
- Radiation Emergency Medicine Center, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Yayoi Tsutsumi
- Radiation Emergency Medicine Center, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Masashi Sagara
- Radiation Emergency Medicine Center, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan
| | - Chie Takada
- Nuclear Fuel Cycle Engineering Laboratories (NCL), Japan Atomic Energy Agency (JAEA), 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan
| | - Takumaro Momose
- Nuclear Fuel Cycle Engineering Laboratories (NCL), Japan Atomic Energy Agency (JAEA), 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan
| | - Osamu Kurihara
- Department of Radiation Measurement and Dose Assessment, NIRS, QST, Japan
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29
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Yamaguchi A, Tatsumoto M, Matsumura R, Endo T, Hirata K, Tokuda I, Akashi M. Normal peripheral circadian phase in the old-old with abnormal circadian behavior. Genes Cells 2018; 23:849-859. [DOI: 10.1111/gtc.12633] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 07/09/2018] [Accepted: 07/24/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Ai Yamaguchi
- The Research Institute for Time Studies; Yamaguchi University; Yamaguchi Japan
| | | | - Ritsuko Matsumura
- The Research Institute for Time Studies; Yamaguchi University; Yamaguchi Japan
| | - Takuyuki Endo
- Department of Neurology; Toneyama National Hospital; Toyonaka Japan
| | - Koichi Hirata
- Department of Neurology; Dokkyo Medical University; Mibu Japan
| | - Isao Tokuda
- Department of Mechanical Engineering; Ritsumeikan University; Kusatsu Japan
| | - Makoto Akashi
- The Research Institute for Time Studies; Yamaguchi University; Yamaguchi Japan
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30
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Abe T, Jujo K, Minami Y, Kametani M, Yoshikawa M, Mizobuchi K, Ishida I, Akashi M, Tanaka K, Haruki S, Sekiguchi H, Hagiwara N. 206Guideline-recommended medication including mineralocorticoid-receptor antagonists is associated with better long-term outcomes in octogenarian patients with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Abe
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Minami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Kametani
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Yoshikawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Mizobuchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - I Ishida
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Akashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Haruki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Sekiguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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31
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Kametani M, Jujo K, Minami Y, Abe T, Mizobuchi K, Ishida I, Yoshikawa M, Akashi M, Tanaka K, Haruki S, Hagiwara N. P6537J-shaped association between length of hospital stay and cardiovascular mortality after discharge in patients with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Kametani
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Minami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - T Abe
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Mizobuchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - I Ishida
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Yoshikawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Akashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Haruki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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32
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Kurihara O, Li C, Lopez MA, Kim E, Tani K, Nakano T, Takada C, Momose T, Akashi M. Experiences of Population Monitoring Using Whole-Body Counters in Response to the Fukushima Nuclear Accident. Health Phys 2018; 115:259-274. [PMID: 29957688 DOI: 10.1097/hp.0000000000000862] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Whole-body counter measurements of residents of Fukushima Prefecture have been extensively performed after the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. These measurements have demonstrated that the levels of internal contamination with radioactive cesium (Cs and Cs) in the residents are very low. This article provides an overview of and lessons learned from these whole-body counter measurements with emphasis on the technical problems encountered, and it discusses the effective use of whole-body counters for assessing the internal thyroid doses of individuals when direct measurements of I in the thyroid are difficult or impossible to implement for the total affected population in a short time after a nuclear reactor accident. The application of this dose reconstruction method requires determining the intake ratio of I to cesium isotopes at appropriate times and considers the short biological half-lives of cesium isotopes, in particular for children.
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Affiliation(s)
- Osamu Kurihara
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, Japan
| | - Chunsheng Li
- Radiation Protection Bureau, Health Canada, 775 Brookfield Rd., Ottawa, Canada
| | - Maria Antonia Lopez
- Centro de Investigaciones Emergéticas, Medioambientales y Technológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - Eunjoo Kim
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, Japan
| | - Kotaro Tani
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, Japan
| | - Takashi Nakano
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, Japan
| | - Chie Takada
- Japan Atomic Energy Agency, Nuclear Fuel Cycle Development Laboratories, 4-33 Muramatsu, Tokai-mura, Ibaraki, Japan
| | - Takumaro Momose
- Japan Atomic Energy Agency, Nuclear Fuel Cycle Development Laboratories, 4-33 Muramatsu, Tokai-mura, Ibaraki, Japan
| | - Makoto Akashi
- National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, Japan
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Abe T, Jujo K, Minami Y, Kametani M, Yoshikawa M, Mizobuchi K, Ishida I, Akashi M, Tanaka K, Haruki S, Arashi H, Sekiguchi H, Hagiwara N. 5074The impact of additional mineralocorticoid receptor antagonist on guideline-recommended medical therapy in acute heart failure patients with ischemic heart disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Abe
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Minami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Kametani
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Yoshikawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Mizobuchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - I Ishida
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Akashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Haruki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Sekiguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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Mizobuchi K, Jujo K, Minami Y, Kametani M, Abe T, Yoshikawa M, Ishida I, Akashi M, Haruki S, Arashi H, Sekiguchi H, Hagiwara N. P2779Therapeutic validity and effectiveness of guideline-recommended medical therapy in acute heart failure patients on regular hemodialysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Mizobuchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Minami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Kametani
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - T Abe
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Yoshikawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - I Ishida
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Akashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Haruki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Sekiguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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Kametani M, Jujo K, Minami Y, Abe T, Mizobuchi K, Ishida I, Yoshikawa M, Akashi M, Tanaka K, Haruki S, Hagiwara N. P273Full combination of guideline-recommended medical therapy is associated with better long-term mortality in acute heart failure patients with low blood pressure and renal dysfunction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Kametani
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Minami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - T Abe
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Mizobuchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - I Ishida
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Yoshikawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - M Akashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Haruki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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Kobayashi M, Watanabe K, Matsumura R, Anayama N, Miyamoto A, Miyazaki H, Miyazaki K, Shimizu T, Akashi M. Involvement of the luteinizing hormone surge in the regulation of ovary and oviduct clock gene expression in mice. Genes Cells 2018; 23:649-657. [PMID: 29920869 DOI: 10.1111/gtc.12605] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 05/17/2018] [Accepted: 05/18/2018] [Indexed: 12/15/2022]
Abstract
Circadian dysfunction perturbs the female reproductive cycle. In particular, mice lacking the clock gene Bmal1 show severe infertility, implying that BMAL1 plays roles in ovulation and luteinization. Here, we examined temporal changes in clock gene expression in the ovary and oviduct before and during gonadotropin-induced follicular growth, ovulation, and luteinization in sexually immature mice. While the oviduct did not show a drastic change in clock gene expression, Bmal1 expression in the ovary was higher than that in control mice during the period from 4 to 16 hr after human chorionic gonadotropin (hCG) administration. Bmal1 expression reached a maximum at 16 hr after hCG administration, when follicle luteinization occurred. In an interesting manner, administration of hCG to ex vivo-cultured oviduct triggered a shorter circadian period and inevitably resulted in phase advance. Together, our present data suggest that LH surge induces continuous expression of BMAL1 in the mouse ovary and modulates circadian phase in the mouse oviduct.
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Affiliation(s)
- Momoko Kobayashi
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Kaya Watanabe
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
| | - Nozomi Anayama
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Akio Miyamoto
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Hitoshi Miyazaki
- Gene Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Koyomi Miyazaki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Takashi Shimizu
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
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Iwai S, Kishimoto S, Nishiyama K, Matsusaki M, Akagi T, Akashi M. PO-242 Novel analysis of cancer cell invasion using a three-dimensional cultured tissue model mimics human tissue organisation. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Kajimoto J, Matsumura R, Node K, Akashi M. Potential role of the pancreatic hormone insulin in resetting human peripheral clocks. Genes Cells 2018; 23:393-399. [PMID: 29644786 DOI: 10.1111/gtc.12582] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/04/2018] [Indexed: 12/15/2022]
Abstract
Mammalian circadian rhythms are phase-adjusted and amplified by external cues such as light and food. While the light input pathway via the central clock, the suprachiasmatic nucleus, has been well defined, the mechanism of feeding-induced circadian resetting remains undefined, particularly in humans. Animal studies have indicated that insulin, a pancreatic hormone that is secreted rapidly in response to feeding, is an input factor for a few peripheral clocks, such as liver and adipose tissue. In this study, using plucked and cultured hair follicles as a representative human peripheral clock, we examined the effect of insulin on circadian characteristics of clock gene expression. Our results demonstrate that insulin phase-shifts or amplifies the clock gene expression rhythms of ex vivo cultured hair follicles in a phase-responsive manner. To reduce the possibility that differences in species, genetic or environmental background, and experimental methods affected experimental outcomes, we also treated surgically extracted whisker follicles of Period2::Luciferase (Per2Luc ) mice with insulin and found that the effect of insulin on clock gene expression was reproducible. These results suggest the possibility that feeding-induced insulin resets peripheral circadian clocks in humans.
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Affiliation(s)
- Jun Kajimoto
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
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Toh U, Saku S, Iwakuma N, Takao Y, Okabe M, Akashi M, Yamada A, Shichijo S, Itoh K, Akagi Y. Abstract P3-05-09: Prognostic factors for therapeutic personalized peptide vaccines in patients with metastatic recurrent breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-05-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We have previously reported the prognostic role of humoral antigen spreading response against prostate-related antigen (PRA) for metastatic recurrent breast cancer (mrBC) patients who received personalized peptide vaccine (PPV) therapy (Toh U, SABCS 2015). The prognostic effect was additionally evaluated by the clinical relevant factors including intrinsic subtype, the regimens of combined chemo-hormonal therapies in present study.
Methods:We analyzed serum IgG responses to all of the peptide candidates included PRAs (PSA, PAP and PMSA) after PPV therapy by the Luminex systemusing peripheral blood samples from 77 vaccinated mrBC patients. The clinical factors and relevant events were statistically evaluated.
Results: After 6 and 12cycles of PPV therapy, the serum IgG of anti-PSA, anti-PAP, and/or anti-PMSA increased significantly in 31 patients (PRA response group), and the median progression free survival (PFS) and median overall survival (OS) were 8.1 and 14.3 months, but were 5.1 and 10.8 months, respectively, in the remaining 46 patients with no anti-PRA IgG response (PRA non-response Group). The anti-PRA IgG level was marginally correlated withPFS (p=0.059) and OS (p=0.082) between these two groups, which was a significant prognostic factor for PFS (Log-rank: 0.009) in estrogen-positive cancer patients (ER+). The statistical analyses showed that the clinical outcome was in favor of > 60 year-old patients, those with longer PPV therapies (>3 months), and those who received combined standard hormonal therapies or bisphosphonate/anti-RANKL therapy.
Conclusions: This study indicated a clinical significance between the pre-and post- PPV therapy measurement of serum anti-PRA IgG in patients with mrBC, which may be a useful prognostic marker for monitoring peptide vaccine treatment outcomes, particularly for patients > 60 years with ER+ breast cancer. These results also suggest that the immunotherapeutic peptide vaccine could be efficiently combined with hormonal therapy, anti-HER2 therapy, and bisphosphonate/anti-RANKL therapy in mrBC patients.
Citation Format: Toh U, Saku S, Iwakuma N, Takao Y, Okabe M, Akashi M, Yamada A, Shichijo S, Itoh K, Akagi Y. Prognostic factors for therapeutic personalized peptide vaccines in patients with metastatic recurrent breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-05-09.
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Affiliation(s)
- U Toh
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - S Saku
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - N Iwakuma
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - Y Takao
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - M Okabe
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - M Akashi
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - A Yamada
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - S Shichijo
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - K Itoh
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
| | - Y Akagi
- Kurume University School of Medicine, Kurume, Japan; Kurume University Research Center for Innovative Cancer Therapy, Kurume, Fukuoka, Japan; Kurume University Cancer Vaccine Center, Kurume, Fukuoka, Japan
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Akashi M, Sato S. Food Protein-Induced Enterocolitis Syndrome in Response to Quail’s Egg in a Child Without Hen’s Egg Allergy. J Investig Allergol Clin Immunol 2017; 27:381-382. [DOI: 10.18176/jiaci.0190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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41
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Berris T, Nüsslin F, Meghzifene A, Ansari A, Herrera-Reyes E, Dainiak N, Akashi M, Gilley D, Ohtsuru A. Nuclear and radiological emergencies: Building capacity in medical physics to support response. Phys Med 2017; 42:93-98. [PMID: 29173925 PMCID: PMC9749797 DOI: 10.1016/j.ejmp.2017.09.117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/27/2017] [Accepted: 09/01/2017] [Indexed: 12/16/2022] Open
Abstract
Medical physicists represent a valuable asset at the disposal of a structured and planned response to nuclear or radiological emergencies (NREs), especially in the hospital environment. The recognition of this fact led the International Atomic Energy Agency (IAEA) and the International Organization for Medical Physics (IOMP) to start a fruitful collaboration aiming to improve education and training of medical physicists so that they may support response efforts in case of NREs. Existing shortcomings in specific technical areas were identified through international consultations supported by the IAEA and led to the development of a project aiming at preparing a specific and standardized training package for medical physicists in support to NREs. The Project was funded through extra-budgetary contribution from Japan within the IAEA Nuclear Safety Action Plan. This paper presents the work accomplished through that project and describes the current steps and future direction for enabling medical physicists to better support response to NREs.
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Affiliation(s)
- Theocharis Berris
- International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Division of Human Health, Dosimetry and Medical Radiation Physics Section, Vienna International Centre, PO Box 100, A-1400 Vienna, Austria,Corresponding author at: University of Crete, Faculty of Medicine, Department of Medical Physics, P.O. Box 2208, 71003 Heraklion, Crete, Greece. (T. Berris)
| | - Fridtjof Nüsslin
- Technische Universität München, Klinikum Rechts der Isar, Klinik für Strahlentherapie und Radiologische Onkologie, Ismaninger Str.22, D-81675 Munich, Germany
| | - Ahmed Meghzifene
- International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Division of Human Health, Dosimetry and Medical Radiation Physics Section, Vienna International Centre, PO Box 100, A-1400 Vienna, Austria
| | - Armin Ansari
- Centers for Disease Control and Prevention, Radiation Studies Branch, Div. of Environmental Hazards and Health Effects, National Center for Environmental Health, 4770 Buford Highway, NE, Atlanta 30341-3717, GA, United States
| | - Eduardo Herrera-Reyes
- International Atomic Energy Agency, Department of Nuclear Safety and Security, Division of Radiation, Office of the Deputy Director General, Incident and Emergency Centre, Vienna International Centre, PO Box 100, A-1400 Vienna, Austria
| | - Nicholas Dainiak
- Medical and Technical Director REAC/TS and Clinical Professor, Department of Therapeutic Radiology, Yale University School of Medicine Radiation Emergency Assistance Center/Training Site, P.O. Box 117, MS 39, Oak Ridge, TN 37831, United States
| | - Makoto Akashi
- Executive Officer, National Institutes for Quantum and Radiological Science and Technology (QST) 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba 263-8555, Japan
| | - Debbie Gilley
- International Atomic Energy Agency, Department of Nuclear Safety and Security, Division of Radiation, Transport and Waste Safety, Radiation Safety and Monitoring Section, Radiation Protection of Patients Unit, Vienna International Centre, PO Box 100, A-1400 Vienna, Austria
| | - Akira Ohtsuru
- Department of Radiation Health Management, Fukushima Medical University, Fukushima 960-1295, Japan
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Tatsumoto M, Akashi M, Ohata H, Takaku S, Hirata K. Evaluation of the effects of an organic light emitting diode lighting environment for patients with migraine. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Yoshinaka K, Yamaguchi A, Matsumura R, Node K, Tokuda I, Akashi M. Effect of different light-dark schedules on estrous cycle in mice, and implications for mitigating the adverse impact of night work. Genes Cells 2017; 22:876-884. [PMID: 28884885 DOI: 10.1111/gtc.12522] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 08/03/2017] [Indexed: 12/29/2022]
Abstract
Approximately 20% of workers in developed countries are involved in night work. Nevertheless, many studies have strongly suggested that night-work-induced chronic circadian misalignment increases the risk of a diverse range of health problems. Although a relation between night work and irregular menstrual cycles has been indicated epidemiologically, a direct causal link remains elusive. Here, we report that repetitive reversal of light-dark (LD) cycles triggers irregular estrous cycles in mice. The findings showed that the estrous cycle remained irregular for more than four weeks after the mice were returned to regular LD cycles. Importantly, the magnitude of the negative impact of reversed LD cycles on the estrous cycle, or more specifically the decreased number of normal estrous cycles during the observation period, was dependent on the difference in the frequency of LD reversal. Presently, no clear solution to prevent night-work-mediated menstrual abnormalities is available, and reducing night work in modern society is difficult. Our findings indicate that optimizing work schedules could significantly prevent menstrual problems without reducing total night-work time.
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Affiliation(s)
- Kiichi Yoshinaka
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Ai Yamaguchi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Isao Tokuda
- Department of Mechanical Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, 525-8577, Japan
| | - Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8511, Japan
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Tokuda IT, Okamoto A, Matsumura R, Takumi T, Akashi M. Potential contribution of tandem circadian enhancers to nonlinear oscillations in clock gene expression. Mol Biol Cell 2017; 28:2333-2342. [PMID: 28637769 PMCID: PMC5555660 DOI: 10.1091/mbc.e17-02-0129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 06/12/2017] [Accepted: 06/14/2017] [Indexed: 01/14/2023] Open
Abstract
Limit-cycle oscillations require the presence of nonlinear processes. Although mathematical studies have long suggested that multiple nonlinear processes are required for autonomous circadian oscillation in clock gene expression, the underlying mechanism remains controversial. Here we show experimentally that cell-autonomous circadian transcription of a mammalian clock gene requires a functionally interdependent tandem E-box motif; the lack of either of the two E-boxes results in arrhythmic transcription. Although previous studies indicated the role of the tandem motifs in increasing circadian amplitude, enhancing amplitude does not explain the mechanism for limit-cycle oscillations in transcription. In this study, mathematical analysis suggests that the interdependent behavior of enhancer elements including not only E-boxes but also ROR response elements might contribute to limit-cycle oscillations by increasing transcriptional nonlinearity. As expected, introduction of the interdependence of circadian enhancer elements into mathematical models resulted in autonomous transcriptional oscillation with low Hill coefficients. Together these findings suggest that interdependent tandem enhancer motifs on multiple clock genes might cooperatively enhance nonlinearity in the whole circadian feedback system, which would lead to limit-cycle oscillations in clock gene expression.
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Affiliation(s)
- Isao T Tokuda
- Department of Mechanical Engineering, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Akihiko Okamoto
- Research Institute for Time Studies, Yamaguchi University, Yamaguchi 753-8511, Japan
| | - Ritsuko Matsumura
- Research Institute for Time Studies, Yamaguchi University, Yamaguchi 753-8511, Japan
| | - Toru Takumi
- RIKEN Brain Science Institute, Wako 351-0198, Japan
| | - Makoto Akashi
- Research Institute for Time Studies, Yamaguchi University, Yamaguchi 753-8511, Japan
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45
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Matsumura R, Akashi M. Multiple circadian transcriptional elements cooperatively regulate cell-autonomous transcriptional oscillation of Period3, a mammalian clock gene. J Biol Chem 2017; 292:16081-16092. [PMID: 28821614 DOI: 10.1074/jbc.m117.806836] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/07/2017] [Indexed: 11/06/2022] Open
Abstract
Cell-autonomous oscillation in clock gene expression drives circadian rhythms. The development of comprehensive analytical techniques, such as bioinformatics and ChIP-sequencing, has enabled the genome-wide identification of potential circadian transcriptional elements that regulate the transcriptional oscillation of clock genes. However, detailed analyses using traditional biochemical and molecular-biological approaches, such as binding and reporter assays, are still necessary to determine whether these potential circadian transcriptional elements are actually functional and how significantly they contribute to driving transcriptional oscillation. Here, we focused on the molecular mechanism of transcriptional oscillations in the mammalian clock gene Period3 (Per3). The PER3 protein is essential for robust peripheral clocks and is a key component in circadian output processes. We found three E box-like elements located upstream of human Per3 transcription start sites that additively contributed to cell-autonomous transcriptional oscillation. However, we also found that Per3 is still expressed in a circadian manner when all three E box-like elements are functionally impaired. We noted that Per3 transcription was activated by the synergistic actions of two D box-like elements and the three E box-like elements, leading to a drastic increase in circadian amplitude. Interestingly, circadian expression of Per3 was completely disrupted only when all five transcriptional elements were functionally impaired. These results indicate that three E box-like and two D box-like elements cooperatively and redundantly regulate cell-autonomous transcriptional oscillation of Per3.
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Affiliation(s)
- Ritsuko Matsumura
- From the Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Makoto Akashi
- From the Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
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Sato M, Wakamura T, Morita T, Okamoto A, Akashi M, Matsui T, Sato M. Effects of bright light exposure during daytime on peripheral clock gene expression in humans. Int J Biometeorol 2017; 61:1133-1138. [PMID: 27988807 DOI: 10.1007/s00484-016-1294-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 11/25/2016] [Accepted: 12/05/2016] [Indexed: 06/06/2023]
Abstract
Light is the strongest synchronizer controlling circadian rhythms. The intensity and duration of light change throughout the year, thereby influencing body weight, food preferences, and melatonin secretion in humans and animals. Although the expression of clock genes has been examined using human samples, it currently remains unknown whether bright light during the daytime affects the expression of these genes in humans. Therefore, we herein investigated the effects of bright light exposure during the daytime on clock gene expression in the hair follicular and root cells of the human scalp. Seven healthy men (20.4 ± 2.2 years old; 172.3 ± 5.8 cm; 64.3 ± 8.5 kg; BMI 21.7 ± 3.1 kg/m2, mean ± SD) participated in this study. Subjects completed 3-day experimental sessions twice in 1 month during which they were exposed to bright and dim light conditions. The mRNA expression of Per1-3, Cry1-2, Rev-erb-α (Nr1d1), Rev-erb-β (Nr1d2), and Dec1 was analyzed using branched DNA probes. No significant changes were observed in the expression of Per1, Per2, Per3, Cry1, Cry2, Rev-erb-α (Nr1d1), or Dec1 following exposure to bright light conditions. However, the expression of Rev-erb-β (Nr1d2) tended to be stronger under bright light than dim light conditions. These results suggest that the bright light stimulus did not influence the expression of clock genes in humans. Long-lasting bright light exposure during the daytime may be required to change the expression of clock genes in humans.
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Affiliation(s)
- Maki Sato
- Department of Physiology, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan.
| | - Tomoko Wakamura
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takeshi Morita
- Department of Environmental Science, Fukuoka Women's University, Fukuoka, Japan
| | - Akihiko Okamoto
- Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
| | - Makoto Akashi
- Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
| | - Takuya Matsui
- Department of Physiology, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan
| | - Motohiko Sato
- Department of Physiology, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan.
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Kunishima N, Kurihara O, Kim E, Ishikawa T, Nakano T, Fukutsu K, Tani K, Furuyama K, Hashimoto S, Hachiya M, Naoi Y, Akashi M. Early Intake of Radiocesium by Residents Living Near the Tepco Fukushima Dai-ichi Nuclear Power Plant After the Accident. Part 2: Relationship Between Internal Dose and Evacuation Behavior in Individuals. Health Phys 2017; 112:512-525. [PMID: 28441283 DOI: 10.1097/hp.0000000000000657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Tokyo Electric Power Company's Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident exposed members of the public to radiation. This study analyses the relation between personal behavior data obtained from 112 out of 174 subjects who underwent whole-body measurements by the National Institute of Radiological Sciences (NIRS) during the period from 27 June to 28 July 2011 and their committed effective doses (CEDs) from Cs and Cs. The whereabouts of the 112 persons living in municipalities near the FDNPP (mainly, Namie town) on several days in March 2011 are graphed on maps. It was confirmed that most subjects started evacuation promptly and had left the 20-km-radius of the FDNPP by the end of 12 March. The individual CEDs were poorly correlated with the person's distances from the FDNPP at any day in March. Meanwhile, the percentage of persons remaining within the 20-km radius of the FDNPP was 100% at 16:00 on 12 March and 42.9% at 0:00 on 15 March for those with CEDs > 0.1 mSv, whereas the corresponding values were much lower for those with CEDs ≤ 0.1 mSv. This suggests that the time of evacuation would be one of the crucial factors for the early intake; however, more personal behavior data are needed to be analyzed to clarify the relevance to the individual internal dose.
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Affiliation(s)
- Naoaki Kunishima
- *National Institutes for Quantum and Radiological Sciences and Technology, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan; †Self-Defense Forces Central Hospital, 1-2-24 Ikejiri, Setagaya-ku, Tokyo, Japan; ‡Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, Japan; §Fukushima Medical University, 1-Hikarigaoka, Fukushima-city, Fukushima, Japan; **Nuclear Safety Technology Center, 5-1-3-101 Hakusan, Bunkyo-ku, Tokyo, Japan
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Akashi M, Matsumura R, Matsuo T, Kubo Y, Komoda H, Node K. Hypercholesterolemia Causes Circadian Dysfunction: A Potential Risk Factor for Cardiovascular Disease. EBioMedicine 2017; 20:127-136. [PMID: 28499924 PMCID: PMC5478205 DOI: 10.1016/j.ebiom.2017.04.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 01/01/2023] Open
Abstract
Hypercholesterolemia is a well-known risk factor for a wide range of diseases in developed countries. Here, we report that mice lacking functional LDLR (low density lipoprotein receptor), an animal model of human familial hypercholesterolemia, show circadian abnormalities. In free running behavioral experiments in constant darkness, these mice showed a prolonged active phase and distinctly bimodal rhythms. Even when the circadian rhythms were entrained by light and dark cycles, these mice showed a significant attenuation of behavioral onset intensity at the start of the dark period. Further, we hypothesized that the combination of hypercholesterolemia and circadian abnormalities may affect cardiovascular disease progression. To examine this possibility, we generated LDLR-deficient mice with impaired circadian rhythms by simultaneously introducing a mutation into Period2, a core clock gene, and found that these mice showed a significant enlargement of artery plaque area with an increase in inflammatory cytokine IL-6 levels. These results suggest that circadian dysfunction may be associated with the development or progression of cardiovascular diseases. Mice lacking LDLR (low density lipoprotein receptor), a mouse model for hypercholesterolemia, show circadian abnormalities. LDLR-deficient mice with a mutation in Period2, a core clock gene, show a significant enlargement of artery plaque area. Per2 mutation-induced increase in plasma inflammatory cytokines may cause modification of arteriosclerosis.
Hypercholesterolemia is a common pathology in advanced countries, occurring in 10% to 30% of the population. Here, we report that mice lacking LDLR (low density lipoprotein receptor), an animal model for hypercholesterolemia, experienced chronic circadian abnormalities. Further, we found that LDLR-deficient mice with a mutation in Period2, a clock gene, showed a significant enlargement of artery plaque area. Together, our findings indicate that hypercholesterolemia induces circadian abnormalities, leading to a decline in the quality of social life and an increase in the risk of circadian-related diseases, and that circadian dysfunction might affect the development or progression of hypercholesterolemia-related diseases.
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Affiliation(s)
- Makoto Akashi
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan.
| | - Ritsuko Matsumura
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Takahiro Matsuo
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Yuki Kubo
- The Research Institute for Time Studies, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Hiroshi Komoda
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
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Harigane M, Suzuki Y, Yasumura S, Ohira T, Yabe H, Maeda M, Abe M, Abe M, Yamashita S, Kamiya K, Tanigawa K, Yasumura S, Akashi M, Kodama K, Ozasa K, Yabe H, Maeda M, Nollet KE, Niwa O, Ohtsuru A, Matsui S, Niwa S, Hosoya M, Ohira T, Kunii Y, Itagaki S, Shiga T, Iwasa H, Suzuki Y, Nakayama Y, Fujii S, Satoh H, Hashimoto S, Takese K, Nakajima S, Momoi M, Goto S, Mashiko H, Ohta M, Goto A, Hisata M, Kawakami N, Yagi A, Oiwaka YI, Ueda Y, Harigane M, Horikoshi N, Kashiwazaki YY, Takeda G. The Relationship Between Functional Independence and Psychological Distress in Elderly Adults Following the Fukushima Daiichi Nuclear Power Plant Accident. Asia Pac J Public Health 2017. [DOI: 10.1177/1010539516683498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study aimed to explore the relationship between psychological distress and degree of functional independence among elderly adults following the Great East Japan Earthquake. Participants were 20 282 adults aged 65 and older who lived in the Great East Japan Earthquake evacuation zone specified by the government on March 31, 2011. This study is a part of a detailed survey on mental health and lifestyle, the Fukushima Health Management Survey, which was conducted in 2012. Psychological distress was assessed using the Kessler 6 scale. Functional independence in different daily activities was assessed by asking participants whether they could independently perform activities: eating, dressing, toileting, and shopping. According to the multiple logistic regression analysis, psychological distress was significantly associated with independence in all models: without adjustment (Model 1), adjusting for demographic characteristics (Model 2), and adjusting for demographic characteristics and disaster-related factors (Model 3), with an adjusted odds ratio of 2.32 (95% confidence interval = 1.97-2.73). High psychological distress was associated with low functional independence, after controlling for demographic characteristics and disaster-related factors. Thus, using psychological distress as the dependent variable, we examined the relationship between low functional independence and psychological distress among elderly adults who were evacuated.
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Affiliation(s)
| | - Yuriko Suzuki
- National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
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Kakei Y, Akashi M, Teraoka S, Hasegawa T, Minamikawa T, Komori T. Postoperative pulmonary failure after oral oncologic surgery with simultaneous reconstruction. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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