著者

HIROKI SHIMURA SHINICHI SUZUKI TOSHIHIKO FUKUSHIMA SANAE MIDORIKAWA SATORU SUZUKI NAOMI HAYASHIDA MISA IMAIZUMI NORIYUKI OKUBO YASUSHI ASARI TAKESHI NIGAWARA FUMIHIKO FURUYA KAZUHIKO KOTANI SHIGEYUKI NAKAJI AKIRA OTSURU TAKASHI AKAMIZU MASAFUMI KITAOKA NOBORU TAKAMURA MASAFUMI ABE HITOSHI OHTO NOBUYUKI TANIGUCHI SHUNICHI YAMASHITA

出版者

福島医学会

雑誌

FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)

巻号頁・発行日

pp.2014-28, (Released:2014-12-20)

参考文献数

33

被引用文献数

4

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Contents1. Introduction2. Thyroid ultrasound examination in Fukushima3. Thyroid ultrasound findings in children in three Japanese prefectures4. Prevalence of thyroid nodular lesions in children and adolescents 4.1 Thyroid cyst 4.2 Thyroid nodule 4.3 Thyroid cancer5. SummaryConflict of interestReference

著者

Naomi HAYASHIDA Yui SEKITANI Alexander KOZLOVSKY Ruslan RAFALSKY Alexander GUTEVICH Valery DANILIUK Shunichi YAMASHITA Noboru TAKAMURA

出版者

Journal of Radiation Research Editorial Committee

雑誌

Journal of Radiation Research (ISSN:04493060)

巻号頁・発行日

vol.52, no.5, pp.629-633, 2011 (Released:2011-09-27)

参考文献数

12

被引用文献数

13 4

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During the Chernobyl Nuclear Power Plant (CNPP) accident on 26 April 1986, large amounts of radionuclides were released and spread to vast areas. Inhabitants residing around CNPP have been exposed to external and internal irradiation due to the long half-life of 137Cs (30 years). In this study, we screened for internal whole-body 137Cs concentration using a whole-body counter in the Zhitomir state of Ukraine. The total number of participants was 144,972 (96,149 females and 48,823 males). The median body burden of 137Cs per body weight decreased from 1996 to 2008. In particular, after 2003, more than half of subjects had internal exposure doses below the detectable level. A weak seasonal effect was found in measurement data from 1997 to 1999, but no such effects were observed in later years. We also calculated annual dose for each year and confirmed that doses have been decreasing gradually. In particular, after 2003, the annual effective dose decreased to 0.1 mSv y–1 for 95% of the participants. Only two persons were found to have received more than 5 mSv y–1 since 2007. Although the health effects of 137Cs body burden due to the Chernobyl accident remain uncertain, further screening is needed to monitor the health status and to allay the anxiety of inhabitants in the contaminated areas around CNPP.

著者

HIROKI SHIMURA SHINICHI SUZUKI TOSHIHIKO FUKUSHIMA SANAE MIDORIKAWA SATORU SUZUKI NAOMI HAYASHIDA MISA IMAIZUMI NORIYUKI OKUBO YASUSHI ASARI TAKESHI NIGAWARA FUMIHIKO FURUYA KAZUHIKO KOTANI SHIGEYUKI NAKAJI AKIRA OTSURU TAKASHI AKAMIZU MASAFUMI KITAOKA NOBORU TAKAMURA MASAFUMI ABE HITOSHI OHTO NOBUYUKI TANIGUCHI SHUNICHI YAMASHITA

出版者

THE FUKUSHIMA SOCIETY OF MEDICAL SCIENCE

雑誌

FUKUSHIMA JOURNAL OF MEDICAL SCIENCE (ISSN:00162590)

巻号頁・発行日

vol.60, no.2, pp.196-202, 2014 (Released:2015-02-26)

参考文献数

33

被引用文献数

4

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Contents1. Introduction2. Thyroid ultrasound examination in Fukushima3. Thyroid ultrasound findings in children in three Japanese prefectures4. Prevalence of thyroid nodular lesions in children and adolescents 4.1 Thyroid cyst 4.2 Thyroid nodule 4.3 Thyroid cancer5. SummaryConflict of interestReference

著者

Kosho Yamanouchi Sayaka Kuba Chika Sakimura Mitsuhisa Takatsuki Naomi Hayashida Susumu Eguchi

出版者

Nagasaki University School of Medicine

雑誌

Acta Medica Nagasakiensia (ISSN:00016055)

巻号頁・発行日

vol.61, no.2, pp.67-70, 2017 (Released:2018-03-30)

参考文献数

16

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Background: Recently, the placement of drains in thyroidectomy has been debated. In this study, we evaluated the efficacy and safety of no placement of drains in hemithyroidectomy. Methods: After obtaining approval from the Institutional Review Board, we started not placing drains during surgery in adult patients who underwent hemithyroidectomy with or without central neck lymph node dissection for benign thyroid nodules or well-differentiated thyroid cancer, with informed consent being obtained. We compared the clinical data of the patients without drain placement (n=19) to the historical data of consecutive patients with a suction drain (n=20). Results: The operative wound and amount and characteristics of the drainage fluid were monitored every 2 h after the operation until the following morning, in addition to monitoring the oxygen saturation and an electrocardiogram. The proportion of patients undergoing cervical lymph node dissection was identical between the groups. The drain was removed on Day 1 after surgery in 19 patients and on Day 2 after surgery in 1 patient. The patients without a drain showed a significantly shorter postoperative hospital stay than those with a drain (4.0 vs. 4.5 days, respectively, p=0.03). No patients in either group experienced postoperative bleeding or seroma or wound infection. Conclusion: The hemithyroidectomy patients without a drain were able to be discharged earlier than those with a drain and without any adverse events, provided they received close monitoring after surgery.

著者

Jun Miyata Hirotomo Yamanashi Shin-Ya Kawashiri Sakiko Soutome Kazuhiko Arima Mami Tamai Fumiaki Nonaka Yukiko Honda Masayasu Kitamura Koji Yoshida Yuji Shimizu Naomi Hayashida Shigeru Kawakami Noboru Takamura Takashi Sawase Atsutoshi Yoshimura Yasuhiro Nagata Mayumi Ohnishi Kiyoshi Aoyagi Atsushi Kawakami Toshiyuki Saito Takahiro Maeda

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20230079, (Released:2023-07-29)

参考文献数

42

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In an aging society, it is important to visualize the conditions of people living with diseases or disabilities, such as frailty and sarcopenia, and determine the environmental and genetic factors underlying such conditions. Atherosclerosis and arterial stiffness are key conditions between these factors and noncommunicable diseases. In 2014, we launched a population-based prospective open-cohort study, the Nagasaki Islands Study (NaIS), which was conducted in Goto City, located in the remote islands of Nagasaki Prefecture, Japan, mostly involving middle-aged and older residents. We conducted our own health checkups along with the annual standardized checkups organized by the municipality; recruited study participants; and started to follow-up with them for vital status (death), migration, and occurrence of diseases such as myocardial infarction, stroke, fracture, and human T-cell leukemia virus type 1 (HTLV-1) -associated uveitis. Our checkups were conducted as baseline surveys in different areas of Goto City during the fiscal years 2014–2016, secondary surveys during 2017–2019, and tertiary surveys since 2021, consisting of medical interviews, physical examinations, blood and urine tests, body composition measurements, osteoporosis screening, arterial stiffness measurements, carotid ultrasonography, and dental examination. A total of 4,957 residents participated in either the baseline or secondary surveys and were followed-up; and 3,594 and 3,364 residents (aged 27–96 and 28–98 years) participated in the baseline and secondary surveys, respectively. In conclusion, the NaIS has been undertaken to reveal the influence of aging and risk factors of noncommunicable diseases and disabilities, with an aim to contribute towards better healthcare in the future.

著者

Yasuyuki TAIRA Naomi HAYASHIDA Sergey ZHAVARANAK Alexander KOZLOVSKY Anatoly LYZIKOV Shunichi YAMASHITA Noboru TAKAMURA

出版者

The Japan Endocrine Society

雑誌

Endocrine Journal (ISSN:09188959)

巻号頁・発行日

vol.56, no.2, pp.257-261, 2009 (Released:2009-04-29)

参考文献数

26

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In 2007, we screened urinary iodine (UI) concentrations in urban (Gomel city) and in rural areas (Hoiniki city) of the Gomel Region, Republic of Belarus, which was heavily contaminated by the accident at the Chernobyl Nuclear Power Plant, in order to evaluate the current state of iodine supplementation in these areas. Median levels of UI were 220.5 μg/L (151.5-358.5) μg/L in Gomel city, and 228.0 μg/L (130.0-337.5) μg/L in Hoiniki city. Urinary concentrations in Gomel city were significantly improved, as compared to our previous results in 2000 (p<0.001). There were no differences of UI concentrations between Gomel city and Hoiniki city (p = 0.39), and none of the samples showed moderate (<50 μg/L) or severe (<20 μg/L) iodine deficiency in either city. These results suggest that the state of iodine supplementation has improved in rural areas, as well as in urban areas in the Republic of Belarus, probably due to appropriate fortification of iodized salt in this region.

著者

Yasuyuki TAIRA Naomi HAYASHIDA Gopalganapathi M. BRAHMANANDHAN Yuji NAGAYAMA Shunichi YAMASHITA Jumpei TAKAHASHI Alexander GUTEVITC Alexander KAZLOVSKY Marat URAZALIN Noboru TAKAMURA

出版者

Journal of Radiation Research Editorial Committee

雑誌

Journal of Radiation Research (ISSN:04493060)

巻号頁・発行日

vol.52, no.1, pp.88-95, 2011 (Released:2011-01-29)

参考文献数

24

被引用文献数

25

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To evaluate current environmental contamination and contributions from internal and external exposure due to the accident at the Chernobyl Nuclear Power Plant (CNPP) and nuclear tests at the Semipalatinsk Nuclear Testing Site (SNTS), concentrations of artificial radionuclides in edible mushrooms, soils and stones from each area were analyzed by gamma spectrometry. Annual effective doses were calculated for each area from the cesium contamination. Calculated internal effective doses of 137Cs due to ingestion of mushrooms were 1.8 × 10–1 mSv/year (y) in Gomel city (around CNPP), 1.7 × 10–1 mSv/y in Korosten city (around CNPP), 2.8 × 10–4 mSv/y in Semipalatinsk city, and 1.3 × 10–4 mSv/y in Nagasaki. Calculated external effective doses of 137Cs were 3.4 × 10–2 mSv/y in Gomel city, 6.2 × 10–2 mSv/y in Korosten city, 2.0 × 10–4 mSv/y in Semipalatinsk city, and 1.3 × 10–4 mSv/y in Nagasaki. Distribution of radionuclides in stones collected beside Lake Balapan (in SNTS) were 241Am (49.4 ± 1.4 Bq/kg), 137Cs (406.3 ± 1.7 Bq/kg), 58Co (3.2 ± 0.5 Bq/kg), and 60Co (125.9 ± 1.1 and 126.1 ± 1.1 Bq/kg). The present study revealed that dose rates from internal and external exposure around CNPP were not sufficiently low and radiation exposure potency still exists even though current levels are below the public dose limit of 1 mSv/y (ICRP1991). Moreover, parts of the SNTS area may be still contaminated by artificial radionuclides derived from nuclear tests. Long-term follow-up of environmental monitoring around CNPP and SNTS, as well as evaluation of health effects in the population residing around these areas, may contribute to radiation safety with a reduction of unnecessary exposure of residents.