No abstract available

[en] Though acceleration of aging induced by radiation could not be demonstrated in many investigations on delayed effects of ionizing radiation on a-bomb survivors, studies on acceleration of aging after the exposure to ionizing radiation in human and animals have been carried out. To investigate whether physiological function was related to the exposure to ionizing radiation, a series of examinations concerning age was carried out at the time of general health examinations at ABCC. Simple examinations concerning aging were carried out on 11,351 a-bomb survivors, but the result was essentially negative. If biological or physiological age was defined clearly, the results of functional test would be used as criterion of aging. (Tsunoda, M.)

[en] The computerized data are as follows: 110,000 data regarding a-bomb survivors who were given notebooks by Nagasaki city; 120,000 data regarding periodical examinations; 3,000 data regarding 10 diseases; 1,000 of 5,000 Atomic Bomb Hospital charts; charts of the Dept. of Internal Medicine, Atomic Disease Institute Nagasaki Univ. (leukemia charts have already been computerized); 90% of the death certificates from the fiscal year 1974 to 1976; postmortem protocol (all 10,000 postmortem protocols from the fiscal year 1971 to the present will be computerized 1978) the estimated number of families was about 10,000. These 8 kinds of data were arranged and integrated in a computer according to individuals. Accordingly, it is possible to note changes in individuals with time, and the main part of research is to output wide-range results objectively by collective management of a great amount of data. This system makes it possible to accurately grasp the effect of exposure distance on examination results and to analyze systematically the relationship between specific diseases and examination results. (Tsunoda, M.)

[en] In 1977 fiscal year, our data processing for ''Data Bank of A-bomb Survivors'' with electronic data processing system (EDPS) were as follows: 1) removal of the duplicate data and correction of errors in the master file, 2) statistical classification of records of A-bomb victims which were collected by the investigation of making a map of streets and houses of office buildings just before the explosion within 1,500 meters from the hypocenter, 3) removal of the duplicate data on the children born to A-bomb survivors, 4) operation of mass visual information storage and retrieval terminal system, 5) selection of KANJI (Chinese character) for record linkage, 6) arrangement of the A-bomb survivor's register and, 7) input and tabulation of the data of the clinical charts stocked in the Department of Internal Medicine. (auth.)

[en] A comparative study was made concerning chromosome aberration, especially symmetrical aberration in 23 serious A-bomb survivors (exposed with more than 100 rad) based upon the observations by using an ordinary staining method (O-method) and a G-band staining method (G-method). By both staining methods, 548 cells of 896 which could be analyzed were identified as normal. Aberration was detected in remaining 348 cells by either method. The number of cells in which aberration was observed by G-method but not by O-method was 55. Cells where aberration was observed by O-method but not by G-method were only 6 in number. Concerning overall aberrations, there were 197 cells in which the number detected kind of aberration by both methods was inconsistent. Also there were 31 cells, aberration of which could not be identified by G-method. The number of cells identified as abnormal by G-method was 342 and 293 by O-method, namely identification of aberration by O-method was 86% of that by G-method. The kinds of aberration are now studying. Results obtained from this study were summarized as follows; aberration which could not be detected by O-method are frequently identified by G-method and most of these aberration are symmetrical. (Kanao, N.)

[en] Estimates are presented on the radiation dose rates to the population due to external radiation during the first few days following the explosion of an atomic bomb at Hiroshima. All available data on induced radioactivity in the region centered on the epicenter and the distribution of radioactive fallout were used for estimates of the dose rate to the population in various locations of the city and early entrants to the city. (U.S.)

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[en] The aged who are admitted to general care ward of Hiroshima Survivors Home and need help to perform all daily chores as of January 1978 are 3 of 18 aged 60 - 69 years old (16.7%), 18 of 69 ones 70 - 79 years old (26.1%), 21 of 52 ones 80 - 89 years old (40.4%), and 6 of 7 ones more than 90 years old (85.7%), which are 48 of total 146 (32.9%). This phenomenon is recognized more frequently in women than in men. Occurrence of this phenomenon was high in a short-distance group and a group who entered city after the explosion. It was also high in the aged who stayed at this home for more than 7 years. Most diseases from which they suffered are those of bone and joints (19%) and arteriosclerosis (18.7%). Eight of 13 aged with eye diseases suffered from cataract. As advancement of senility with aging and exacerbation lead to increase of care for them, it is necessary to change their general care to special one. The ability of such aged, who are admitted to general ward and need help to perform all daily chores, to act independently was the same as that of those admitted to Yokufukai special care ward. At the present when beds for special care are filled to capacity, treatment of the aged who need special care (30% of those who need general care), personnel management, and health management of staffs are important. (Tsunoda, M.)

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No abstract available