Author Kasai, Yosuke| Suzuki, Etsuji| Iwase, Toshihide| Doi, Hiroyuki| Takao, Soshi|
Published Date 2013-10-17
Publication Title PLoS ONE
Volume volume8
Issue issue10
Content Type Journal Article
Author Kishimoto, Yoko| Suzuki, Etsuji| Iwase, Toshihide| Doi, Hiroyuki| Takao, Soshi|
Published Date 2013-12-17
Publication Title BMC Public Health
Volume volume13
Content Type Journal Article
JaLCDOI 10.18926/AMO/54415
FullText URL 70_3_167.pdf
Author Sugihara, Satoshi| Doi, Hiroyuki| Kato, Masahiko| Mitoh, Yoshihiro| Tsuda, Toshihide| Ikeda, Satoru|
Abstract 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.
Keywords Aspergillus flavus aflatoxin rice temperate region storage
Amo Type Original Article
Published Date 2016-06
Publication Title Acta Medica Okayama
Volume volume70
Issue issue3
Publisher Okayama University Medical School
Start Page 167
End Page 173
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2016 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 27339205
Web of Science KeyUT 000379406100003
Author 土居 弘幸|
Published Date 1989-09-30
Publication Title
Content Type Thesis or Dissertation
JaLCDOI 10.18926/AMO/31815
FullText URL fulltext.pdf
Author Kamizato, Eigo| Yoshitome, Kei| Yamamoto, Yuji| Iwase, Toshihide| Tsuda, Toshihide| Miyaishi, Satoru| Doi, Hiroyuki|
Abstract <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>
Keywords suicide methods gender-specific legal medicine cluster suicide
Amo Type Original Article
Published Date 2009-08
Publication Title Acta Medica Okayama
Volume volume63
Issue issue4
Publisher Okayama University Medical School
Start Page 177
End Page 186
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 19727202
Web of Science KeyUT 000269228400003