JaLCDOI 10.18926/AMO/55203
フルテキストURL 71_3_209.pdf
著者 Xin, Zhao| Tsuda, Toshihide| Doi, Hiroyuki|
抄録 We evaluated how exposure to airborne volatile organic compounds emitted from a plastic recycling facility affected nearby residents, in a cross-sectional study. Individuals>10 years old were randomly sampled from 50 households at five sites and given questionnaires to complete. We categorized the subjects by distance from the recycling facility and used this as a proxy measure for pollutant exposure. We sought to improve on a preceding study by generating new findings, improving methods for questionnaire distribution and collection, and refining site selection. We calculated the odds of residents living 500 or 900 m away from the facility reporting mucocutaneous and respiratory symptoms using a reference group of residents 2,800 m away. Self-reported nasal congestion (odds ratio=3.0, 95% confidence interval=1.02-8.8), eczema (5.1, 1.1-22.9), and sore throat (3.9, 1.1-14.1) were significantly higher among residents 500 m from the facility. Those 900 m away were also considerably more likely to report experiencing eczema (4.6, 1.4-14.9). Air pollution was found responsible for significantly increased reports of mucocutaneous and respiratory symptoms among nearby residents. Our findings confirm the effects of pollutants emitted from recycling facilities on residents’ health and clarify that study design differences did not affect the results.
キーワード air pollutants volatile organic compounds recycling facility mucocutaneous symptoms respiratory symptoms
Amo Type Original Article
発行日 2017-06
出版物タイトル Acta Medica Okayama
71巻
3号
出版者 Okayama University Medical School
開始ページ 209
終了ページ 217
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 CopyrightⒸ 2017 by Okayama University Medical School
論文のバージョン publisher
査読 有り
Submission Path amo/vol71/iss3/3
PubMed ID 28655940
JaLCDOI 10.18926/AMO/54415
フルテキストURL 70_3_167.pdf
著者 Sugihara, Satoshi| Doi, Hiroyuki| Kato, Masahiko| Mitoh, Yoshihiro| Tsuda, Toshihide| Ikeda, Satoru|
抄録 Aflatoxin (AFT) contamination is frequent in foods grown in tropical regions, including rice. Although AFTs are generally not found in temperate-region foods, global warming has affected typical temperate-region climates, potentially permitting the contamination of foods with AFT-producing Aspergillus flavus (A. flavus). Here we investigated the AFT production in rice during storage under natural climate conditions in Japan. We examined AFTs in brown rice and rough rice artificially contaminated with A. flavus for 1 year in Japan, and we subjected AFTs in white rice to the same treatment in airtight containers and examined the samples in warm and cold seasons, simulating the storage of white rice in general households. In the brown rice, AFTs increased after 2 months (March) and peaked after 9 months (October). The AFT contamination in the rough rice was minimal. After the polishing and cooking of the brown rice, AFTs were undetectable. In the white rice stored in airtight containers, AFTs increased after 1 month (August) and peaked after 2 months (September). Minimal AFTs were detected in the cold season. Thus, AFT contamination in rice may occur in temperate regions following A. flavus contamination. The storage of rice as rough rice could provide be useful for avoiding AFT contamination.
キーワード Aspergillus flavus aflatoxin rice temperate region storage
Amo Type Original Article
発行日 2016-06
出版物タイトル Acta Medica Okayama
70巻
3号
出版者 Okayama University Medical School
開始ページ 167
終了ページ 173
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 CopyrightⒸ 2016 by Okayama University Medical School
論文のバージョン publisher
査読 有り
Submission Path amo/vol70/iss3/3
PubMed ID 27339205
Web of Sience KeyUT 000379406100003
著者 Tsuda, Toshihide| Tokinobu, Akiko| Yamamoto, Eiji| Suzuki, Etsuji|
発行日 2015
出版物タイトル Epidemiology
資料タイプ 学術雑誌論文
著者 Kawagoe, Seiji| Tsuda, Toshihide| Doi, Hiroyuki|
発行日 2012-12-26
出版物タイトル Geriatrics & Gerontology Internationa
資料タイプ 学術雑誌論文
著者 Yorifuji, Takashi| Tsuda, Toshihide| Inoue, Sachiko| Takao, Soshi| Harada, Masazumi|
発行日 2011-07
出版物タイトル Environment International
37巻
5号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/45268
フルテキストURL 65_2_97.pdf
著者 Tsuchihashi, Yuuki| Yorifuji, Takashi| Takao, Soshi| Suzuki, Etsuji| Mori, Shigeru| Doi, Hiroyuki| Tsuda, Toshihide|
抄録 Seasonal influenza infection is a major challenge in public health. The term "seasonal influenza" refers to the typical increase in the number of influenza patients in the winter season in temperature zones. However, it is not clear how environmental factors within a single flu season affect influenza infection in a human population. Therefore, we evaluated the effects of temperature and humidity in the 2006-7 flu season on the onset of seasonal influenza using a case-crossover study. We targeted patients who attended one pediatric clinic in Okayama city, Japan and who were diagnosed as being infected with the seasonal influenza virus. Using 2 references (time-stratified and symmetric bidirectional design), we estimated the effects of average temperature and relative humidity from the onset day (lag0) to 10 days before (lag10). The total number of subjects was 419, and their onset days ranged from 26 December 2006 to 30 April 2007. While the onset was significantly associated with lower temperature, relative humidity was not related. In particular, temperatures before the 3-day incubation period had higher-magnitude odds ratios. For example, the odds ratio and 95% confidence interval for average temperature at time lag 8 was 1.12 (1.08-1.17) per 1.0℃ decrease. Low environmental temperature significantly increased the risk of seasonal influenza onset within the 2006-7 winter season.
キーワード seasonal influenza in humans temperature humidity case-crossover study
Amo Type Original Article
発行日 2011-04
出版物タイトル Acta Medica Okayama
65巻
2号
出版者 Okayama University Medical School
開始ページ 97
終了ページ 103
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 CopyrightⒸ 2011 by Okayama University Medical School
論文のバージョン publisher
査読 有り
Submission Path amo/vol65/iss2/5
PubMed ID 21519367
Web of Sience KeyUT 000289818800005
JaLCDOI 10.18926/AMO/45264
フルテキストURL 65_2_63.pdf
著者 Mizoguchi, Yoshinori| Suzuki, Etsuji| Tsuchida, Hiroaki| Tsuda, Toshihide| Yamamoto, Eiji| Nakase, Katsumi| Doi, Hiroyuki|
抄録 There have been only 2 reports of a large-scale foodborne outbreak arising from Salmonella enterica serotype Braenderup infection worldwide. On August 9, 2008, an outbreak originating in boxed lunches occurred in Okayama, Japan. We conducted a cohort study of 786 people who received boxed lunches from a particular catering company and collected 644 questionnaires (response rate:82%). Cases were defined as those presenting with diarrhea (≧4 times in 24h) or fever (≧38℃) between 12 am on August 8 and 12 am on August 14. We identified 176 cases (women/men:39/137);younger children (aged<10 years) appeared to more frequently suffer severe symptoms. Three food items were significantly associated with higher risk of illness;tamagotoji (soft egg with mixed vegetables and meat) (relative risk (RR):11.74, 95% confidence interval (CI):2.98-46.24), pork cooked in soy sauce (RR:3.17, 95% CI:1.24-8.10), and vinegared food (RR:4.13, 95% CI:1.60-10.63). Among them, only the RR of tamagotoji was higher when we employed a stricter case definition. Salmonella Braenderup was isolated from 5 of 9 sampled cases and 6 food handlers. It is likely that unpasteurized liquid eggs contaminated by Salmonella Braenderup and used in tamagotoji caused this outbreak.
キーワード boxed lunch cohort study foodborne diseases Salmonella Braenderup unpasteurized liquid eggs
Amo Type Original Article
発行日 2011-04
出版物タイトル Acta Medica Okayama
65巻
2号
出版者 Okayama University Medical School
開始ページ 63
終了ページ 69
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 CopyrightⒸ 2011 by Okayama University Medical School
論文のバージョン publisher
査読 有り
Submission Path amo/vol65/iss2/1
PubMed ID 21519363
Web of Sience KeyUT 000289818800001
JaLCDOI 10.18926/AMO/40009
フルテキストURL 64_3_171.pdf
著者 Kodama, Tomoe| Nakase, Katsumi| Tsuda, Toshihide| Yorifuji, Takashi| Doi, Hiroyuki|
抄録 Physicians should educate patients with sexually transmitted infections (STIs) on measures to prevent reinfection and should also undertake human immunodeficiency virus (HIV) testing after diagnosis of STIs. These preventive measures are important, but it is not known to what extent these procedures are followed in Japan. We conducted a cross-sectional study to investigate the proportion of patients with STIs who received appropriate management from physicians, namely recommendation of HIV testing, encouragement of condom use and examination and/or treatment of sexual partners, to elucidate the factors affecting institution of each measure. From a mailshot of 566 physicians, 409 (72.3%) responded, with 176 diagnosing an STI in 967 patients. The proportions applying the 3 measures were low (recommendation of HIV testing:27.0;encouragement of condom use:64.8%;examination of sexual partners:17.5%), and were related to the sex of the patients and numbers of patients diagnosed by the physicians. Female patients received better care than male patients, particularly with respect to recommendation of HIV testing (odds ratio:2.82). Physicians who diagnosed more than 20 STI patients tended not to provide appropriate management. These findings suggest the necessity for better physician management of patients for effective prevention of STIs.
キーワード sexually transmitted infections patient care management human immunodeficiency virus testing physician
Amo Type Original Article
発行日 2010-06
出版物タイトル Acta Medica Okayama
64巻
3号
出版者 Okayama University Medical School
開始ページ 171
終了ページ 179
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 Okayama University Medical School
論文のバージョン publisher
査読 有り
Submission Path amo/vol64/iss3/3
PubMed ID 20596128
Web of Sience KeyUT 000279094300003
著者 Babazono, Akira| Tsuda, Toshihide| Yamamoto, Eiji| Mino, Yoshio| Une, Hiroshi| Hillman, Alan L.|
発行日 2003-8
出版物タイトル International Journal of Technology Assessment in Health Care
19巻
3号
資料タイプ 学術雑誌論文
著者 Babazono, Akira| Miyazaki, Motonobu| Imatoh, Takuya| Une, Hiroshi| Yamamoto, Eiji| Tsuda, Toshihide| Tanaka, Kiyoshi| Tanihara, Shinichi|
発行日 2005-4
出版物タイトル International Journal of Technology Assessment in Health Care
21巻
2号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/31986
フルテキストURL fulltext.pdf
著者 Ochiai, Hirotaka| Ohtsu, Tadahiro| Tsuda, Toshihide| Kagawa, Haruko| Kawashita, Toshiaki| Takao, Soshi| Tsutsumi, Akizumi| Kawakami, Norito|
抄録 <p>On February 13, 2002, a public health center in Hiroshima Prefecture, Japan, was notified that many individuals living at the Japan Maritime Self-Defence Force base had symptoms resembling those of food poisoning. Self-administered questionnaires requesting information regarding meal consumption and symptoms were distributed to all 281 members at the base. A case of the illness was defined as a member who had had watery or mucousy stool, or loose stool with abdominal cramps, more than twice a day after consuming dinner on February 12. Control of the illness was defined as a member with no symptoms. The dinner on February 12 was significantly associated with the illness (Mantel-Haenszel odds ratio: 3.59, 95% confidence interval: 1.06-12.20). A case-control study showed that, among the food supplied at dinner on February 12, the braised chop suey was significantly associated with the illness (odds ratio: 12.30, 95% confidence interval: 1.90-521.00). The braised chop suey had been stored in a chafing dish. An environmental investigation indicated that Clostridium perfringens (C. perfringens) in the chafing dish proliferated under an inappropriate heat-retention temperature, and the contaminated braised chop suey could have caused the food poisoning. This study demonstrated that the recommended heat-retention temperature (over 65 degrees C) should be confirmed thoroughly.</p>
キーワード outbreak Clostridium perfringens (C. perfringens) epidemiology food poisoning
Amo Type Article
発行日 2005-02
出版物タイトル Acta Medica Okayama
59巻
1号
出版者 Okayama University Medical School
開始ページ 27
終了ページ 32
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
査読 有り
Submission Path amo/vol59/iss1/4
PubMed ID 15902996
Web of Sience KeyUT 000227263300004
JaLCDOI 10.18926/AMO/31815
フルテキストURL fulltext.pdf
著者 Kamizato, Eigo| Yoshitome, Kei| Yamamoto, Yuji| Iwase, Toshihide| Tsuda, Toshihide| Miyaishi, Satoru| Doi, Hiroyuki|
抄録 <p>The annual number of suicides in Japan increased sharply in 1998, and since that time it has consistently exceeded 30,000 per year. In this study, we analyze a database of personal and background characteristics of 824 cases (605 men, 219 women) who completed suicide in Okayama Prefecture in 2002 and 2003. The data were obtained with cooperation from the police. Using the methodologies in a previous European study as a model, we classified the suicide methods into 8 categories. To examine the generational and regional differences in the choice of methods, we stratified the sample into 4 age groups (&#60;-24, 2544, 4564, and &#62;-65) and 2 regional groups (Okayama/Kurashiki vs. other areas). Our results on gender differences in 7 of the suicide methods were mostly similar to the European data. However, our data showed a remarkably higher proportionate male-to-female mortality ratio for poisoning by other substances (ICD-10, X65-X69 codes) (1.83, 1.15-2.92). In terms of generational differences in the choice of suicide methods, the Mantel-Haenszel test of homogeneity was significant for most of the categories in our study, suggesting an impact of age on how people commit suicide. There were no remarkable regional differences in our sample. An epidemic curve for suicides via carbon monoxide poisoning using charcoal briquets revealed a trend of time clustering not observed in the other 6 means. The database constructed and used in this study contains richer information than conventional death statistics and is expected to provide helpful knowledge and insights for future epidemiological studies.</p>
キーワード suicide methods gender-specific legal medicine cluster suicide
Amo Type Original Article
発行日 2009-08
出版物タイトル Acta Medica Okayama
63巻
4号
出版者 Okayama University Medical School
開始ページ 177
終了ページ 186
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
査読 有り
Submission Path amo/vol63/iss4/3
PubMed ID 19727202
Web of Sience KeyUT 000269228400003
JaLCDOI 10.18926/AMO/31751
フルテキストURL fulltext.pdf
著者 Ueno, Mitsuo| Ieyasu, Hidetaka| Tsuda, Toshihide| Ogawa, Takanori| Adachi, Masamitsu|
抄録 <p>The difference in the physiological condition of drivers of manual transmission buses (MTB) and automatic transmission buses (ATB) was examined from the viewpoint of occupational health. This study was based on a self-administered questionnaire which involved items concerning subjective fatigue complaints. No differences in the mental fatigue and stress between MTB drivers and ATB drivers were observed. Although ATB drivers tended to feel less physical fatigue than MTB drivers, the difference was not statistically significant. From these results, it was suggested that there was little difference in the subjective fatigue between ATB drivers and MTB drivers.</p>
キーワード automatic transmission buses manual transmission buses subjective fatigue complaints
Amo Type Article
発行日 1987-10
出版物タイトル Acta Medica Okayama
41巻
5号
出版者 Okayama University Medical School
開始ページ 229
終了ページ 232
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
査読 有り
Submission Path amo/vol41/iss5/7
PubMed ID 3687494
Web of Sience KeyUT A1987K590100007
JaLCDOI 10.18926/AMO/30478
フルテキストURL fulltext.pdf
著者 Uchida, Hayato| Mino, Yoshio| Tsuda, Toshihide| Babazono, Akira| Kawada, Yuichi| Araki, Hidetoshi| Ogawa, Takanori| Aoyama, Hideyasu|
抄録 <p>A cross-sectional study was conducted to quantitatively evaluate the relationship between the instrumental activities of daily living (IADL) and various physical fitness tests in elderly women living at home. The study focused on the total population of those women aged 65 years and over living in Y Town, Hyogo Prefecture, Japan, who visited a nursing home for day services. A total of 128 subjects were divided into two groups: dependent in IADL group (n = 49) and independent in IADL group (n = 79). The magnitude of the relation was evaluated by the odds ratio (OR). The following tests showed a significant decrease in IADL: knee-raising test [age-adjusted OR = 4.23, 95% confidence interval (CI) 1.81-9.87], height (age-adjusted OR = 4.09, 95% CI 1.75-9.56), grip strength (age-adjusted OR = 3.68, 95% CI 1.57-8.60), sit-and-reach test (age-adjusted OR = 2.76, 95% CI 1.20-6.34), and standing on one leg with closed eyes (age-adjusted OR = 2.56, 95% CI 1.09-5.97). Multivariate analysis using Hayashi's quantification method I indicated that knee-raising was the test most highly correlated with decreased IADL. These results suggest that measurement of knee-raising ability, muscle strength of the lower extremities and flexibility of hip joint could be the most useful factors to assess the level of instrumental self-support ability.</p>
キーワード elderly women living at home instrumental activities of daily living physical fitness test kneeraising ability
Amo Type Article
発行日 1996-12
出版物タイトル Acta Medica Okayama
50巻
6号
出版者 Okayama University Medical School
開始ページ 325
終了ページ 333
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
査読 有り
Submission Path amo/vol50/iss6/7
PubMed ID 8985470
Web of Sience KeyUT A1996WA04500007
著者 津田 敏秀| 三野 善央| 松岡 宏明| 谷原 真一| 馬場園 明| 山本 英二|
発行日 1995-12-20
出版物タイトル 環境制御
17巻
資料タイプ 紀要論文
著者 津田 敏秀|
発行日 1989-03-31
出版物タイトル
資料タイプ 学位論文