Mun-Joo Bae, Chiho Watanabe, Tsukasa Inaoka, Makiko Sekiyama et al.
In Bangladesh, rice is boiled with an excessive amount of water, and the water remaining after cooking will be discarded. We did an on-site experiment to assess the effect of this cooking method on the amount of arsenic retained in cooked rice. The concentration of arsenic in cooked rice was higher ...
Chiho Watanabe, Tsutomu Inaoka, Takafumi Kadono, Makoto Nagano et al.
Spot urine samples were collected from the inhabitants of two rural communities in northwestern Bangladesh. We compared arsenic levels in the urine samples ([As](u); n = 346) with those in water from tube wells ([As](tw); range < 1-535 microg/L; n = 86) on an individual basis. The small variation of...
Takafumi Kadono, Tsukasa Inaoka, Nobuko Murayama, Kayo Ushijima et al.
BACKGROUND: Arsenic contamination in groundwater affects 35 million people in Bangladesh, but the prevalence of arsenic contamination in local communities remains to be clarified. As skin manifestations are sensitive markers of arsenicosis, we examined the skin of adults and adolescents in two villa...
Makhan Maharjan, Chiho Watanabe, Sk Akhtar Ahmad, Ryutaro Ohtsuka
A community-based, dose-response study on arsenic contamination was conducted in three communities in Terai in lowland Nepal. The arsenic concentration of all the tube wells in use (n = 146) and the prevalence of arsenic-induced skin manifestation among 1,343 (approximately 80% of the inhabitants) s...
Chiho Watanabe, Tsukasa Inaoka, Tamano Matsui, Kyoko Ishigaki et al.
Health risks caused by the chronic exposure to arsenic-contaminated groundwater has been recognized in many Asian and Latin American countries. While the health effects among adults have been well documented, those among the younger generations including children, infants, babies, and fetus have bee...
Noriko Sudo, Makiko Sekiyama, Chiho Watanabe, A. T. M. Mozammel Haque Bokul et al.
This study aimed to elucidate gender differences in dietary intake of rural Bangladeshi adults. A food frequency questionnaire (FFQ) survey using 15 food/dish items, together with anthropometric measurements, was conducted for 230 adults and adolescents (95 males and 135 females). To estimate the po...
Makhan Maharjan, Chiho Watanabe, Sk Akhtar Ahmad, Masahiro Umezaki et al.
OBJECTIVE: To reveal the inter-relationship between nutritional status and arsenic toxicity. DESIGN: Cross-sectional study. SETTING: A survey in an area of lowland Nepal, where a high prevalence of both skin manifestation and malnutrition was observed. Daily arsenic intake was estimated by measuring...
Chiho Watanabe, Tamano Matsui, Tsukasa Inaoka, Takefumi Kadono et al.
While many reports have outlined the health risk of chronic arsenic exposure on adult populations, relatively little is known about the effects on children. We have examined the effects of chronic arsenic exposure through consumption of contaminated groundwater among 241 children (age 4-15 yr) livin...
Kaori Miyazaki, Kayo Ushijima, Takefumi Kadono, Tsukasa Inaoka et al.
Toxicological and metabolic interactions of selenium (Se) with arsenic (As) have been reported in many experimental studies. However, for human populations, possible interactions between As and Se and their toxicological significance have not been established. In this study, we have examined the rel...
Sk Akhtar Ahmad, Makhan Maharjan, Chiho Watanabe, Ryutaro Ohtsuka
Although arsenic contamination of groundwater has been detected recently in the Terai region of Nepal, scarce data have been available regarding the possible health effects of the contamination. A study was carried out in two rural villages of Nawalparasi district, where the existence of arsenic con...
Ryutaro Ohtsuka, Noriko Sudo, Makiko Sekiyama, Chiho Watanabe et al.
The compact spot-check method was applied to elucidate the daily time and space use patterns of 121 adults from a Bangladeshi village in which the authors had previously found more skin manifestations due to arsenic poisoning in males than females. The analysis of 2178 spot-check data, which were ob...
Chiho Watanabe, Tsukasa Inaoka, Takefumi Kadono, Megumi Nagano et al.
Spot urine samples were collected from the inhabitants of two rural communities in northwestern Bangladesh. We compared arsenic levels in the urine samples ([As](u); n = 346) with those in water from tube wells ([As](tw); range < 1-535 microg/L; n = 86) on an individual basis. The small variation...
Makhan Maharjan, Chiho Watanabe, Aktar Ahmad, Ryutaro Ohtsuka
Abstract. A community-based, dose-response study on arsenic contamination was conducted in three communities in Terai in lowland Nepal. The arsenic concentration of all the tube wells in use (n 146) and the prevalence of arsenic-induced skin manifestation among 1,343 (approximately 80 % of the inhab...
Ryutaro Ohtsuka, Tsukasa Inaoka, Kazuhiko Moji, Enamul Karim et al.
For randomly selected 50 villages in Bangladesh, an interview survey with a structured questionnaire was conducted to reveal their perception on the environmental, health and economic conditions at present and for the past 10-year change. The eight following items were analyzed in this paper: air po...
Ryutaro Ohtsuka, Makiko Sekiyama, Nobuko Sudo, Chieko Watanabe et al.
Jun Hagihara, Ryutaro Ohtsuka
It has been pointed out that desired family size and contraceptive prevalence are most important in considering proximate determinants of fertility. The former was much reported from many surveys, but the later was little reported. This study attempted to estimate the parameter in relation to contra...
Tsutomu Inaoka, Kayo Ushijima, Misato Nagano, Nobuko Murayama et al.