著者

山下 節義 土居 真 西尾 雅七 北條 博厚 田中 昌人

出版者

日本衛生学会

雑誌

日本衛生学雑誌 (ISSN:00215082)

巻号頁・発行日

vol.27, no.4, pp.364-399, 1972-10-28 (Released:2009-02-17)

参考文献数

104

被引用文献数

19 36

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In the summer of 1955, 12, 131 children in western Japan were poisoned as a result of the consumpting “Morinaga Dry Milk” (according to 1956 survey conducted by the Welfare Ministry). 130 of children actually died as a result of this poisoning. The arsenic contained in the milk resulted from the poorly purified “Secondary Sodium Phosphate” used as a stabilizer in the manufacturing process of powdered milk.The afflicted infants were those for whom the powdered milk served as a main food and who were physically and mentally in the developing process. Such mass-poisoning had heretofore never been reported in the world.As the symptoms of poisoning disappeared, these children were thought to have been cured. The issue was closed medically and administrationally in 1956 as the conclusion had been reached that there would be no longlasting effects.In 1969, Dr. Maruyama et al. (J.J.P.H. Vol. 16, No. 3, p. 170, 1969) reported continuing effects of this arsenic poisoning, once more reviving the medical and social problem. From that time, surveys of these patients were carried out in several places in western Japan.In Kyoto, from December 1970 to July 1971, inclusive checks were done as follows: Epidemiological Survey (415 Subjects), Clinical Survey (291 Subjects) and Clinical Psychological Survey (261 Subjects).The Kyoto victims presented the following:1. In Kyoto, many victims had a much higher rate of physical and mental complaints than the control group.2. Average height was less than that of the same age group.3. Rate of victims who showed proteinuria (male 14%, female 12%) was higher than that of the same age group.4. Abnormal and borderline brain waves were found to be much higher rate in victims (abnormal 14%, borderline 17%) than average.5. The younger the age of milk consumption, the higher were the rates of abnormal brain waves.6. Central nervous system disorders eq. epilepsy, minimal brain damage syndrome, mental retardation etc. were found to be higher rate than average.7. Numbers of the patients with hardness of hearing (18%) were above average.8. Numbers of the patients with anomaly of refraction (48%) were above average.9. Many victims (64%) had symptoms of skin that characterized pigmentation and depigmentation rashes etc..10. Tooth enamel dysplasia was found in higher rates among victims.11. Numbers of victims (21%) with an IQ of less than 85 exceeded average numbers, according to Educational Ministry Statistics.12. In psychological tests, eq. Uchida-Kraepelin methods, atypical group in victims was found to be higher rate than average.13. Many had irregular and painful menstruation.14. Many complaints of victims continued from infancy.15. The result of this follow-up study is not inconsistent with the result of pathological and clinical report in 1955.16. Clinical findings and diagnostic reports of this survey are just the same as those in Osaka and Okayama etc.As mentioned above, it can be concluded that the physical and mental defects of these victims are the result of consumption of arsenic tainted “Morinaga Dry Milk” and that these persons have received no therapy for 16 years.These victims are now in physical and mental adolescent changes. As they have had no follow-up medical care, a prediction of their health in adult hood is impossible.For these reasons, a continuation of the surveys is most necessary, and, counterplans-social care, health consultations, psychological counselling including educational problems etc.-should be carried out by medical and psychological specialists.

著者

山本 信弘 光藤 雅康 須藤 勝見 上延 富久治 近藤 雄二 山下 節義

出版者

大阪教育大学

雑誌

大阪教育大学紀要 3 自然科学 (ISSN:03737411)

巻号頁・発行日

vol.37, no.2, pp.p287-297, 1988-12

被引用文献数

2

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ファミリーコンピュータなどの家庭用テレビゲームが急速に普及し,児童の心身発達過程における悪影響が指摘されはじめた。われわれは,小学校高学年の児童を対象に質問紙法によりテレビゲームの実行状況を調査し,特に,画面を見つづけることによる視機能や身体・精神面への影響とテレビゲーム遊びがもたらす日常生活場面における影響に関するデータから,学校保健上の指導対策を考えた。その結果として以下の様な知見を得た。(1)テレビゲーム経験者は調査対象者の9割以上で,遊びの頻度と1回当りの時間については約4割の者が親や教師との約束を守りながら実行していた。(2)テレビゲーム実行後の自覚症行については眼の症状の訴えだけでなく,頸,肩,腕,手指などの訴えが多く,実行時の姿勢や環境に留意させる必要がある。(3)精神面については,「何もしたくない」,「イライラする」,「親の話を聞くのが面倒」などと訴える者が多く,無気力,短気,反抗的などの傾向がみられる。

著者

佐野 晴洋 山下 節義 川西 正祐 井口 弘 吉永 侃夫 小城 勝相 塚本 幾代 藤田 博美 岡本 浩子 加藤 伸勝 宮本 宣博 浮田 義一郎 山根 秀夫 森 律 池田 栄三 乾 修然 藤岡 惇 阿部 醇吉

出版者

日本衛生学会

雑誌

日本衛生学雑誌 (ISSN:00215082)

巻号頁・発行日

vol.37, no.2, pp.566-579, 1982-06-30 (Released:2009-02-17)

参考文献数

32

被引用文献数

1 3

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An epidemiological survey and clinical investigations were carried out on 162 retired workers from manganese mines and ore grinders, who were the residents of the Tamba district of Kyoto Prefecture. Most of the workers had been employed in small industrial factories with less than five employees under very poor working conditions. Fifty-five percent of them had worked in the mines and factories for longer than 11 years. Forty-six percent had been retired for 11-20 years, whereas 27% for longer than 21 years. A group of 124 people living in the same region but who had not been exposed to manganese served as the control group.The incidence of subjective symptoms associated with chronic manganese poisoning such as emotional instability, psychomotor irritability and neurologic abnormalities was apparently high in the experimental group and it increased with the period of exposure to manganese dust. Twenty-eight percent of the workers reported the subjective symptoms while they were employed, but 45% of them reported as late as six years after they retired.Of the retired workers, five (3.1%) had parkinsonism, three (1.9%) showed symptoms of hemiparkinsonism, and fifteen (9.3%) showed neurological symptoms including maskedlike, gait unbalance, slurred speech and imparied fine movements. Forty-five percent of these patients recognized these abnormalities for more than five years after they had left the contaminated workings. It is noteworthy that 39% of the retired workers were diagnosed as having pneumoconiosis.Some of the problems encountered in diagnosing manganese poisoning after exposure has been terminated is also discussed here.