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8 results on '"Van Tung, Dao"'

1. Decreased serum testosterone levels associated with 17β-hydroxysteroid dehydrogenase activity in 7-year-old children from a dioxin-exposed area of Vietnam

Author

Oyama, Yuko, primary, Phuc, Hoang Duc, additional, Honma, Seijiro, additional, Oanh, Nguyen Thi Phuong, additional, Hung, Nguyen Xuan, additional, Anh, Le Thai, additional, Manh, Ho Dung, additional, Van Tung, Dao, additional, Nhu, Dang Duc, additional, Tan, Ngo Minh, additional, Van Thuc, Pham, additional, Minh, Nguyen Hung, additional, Van Toan, Ngo, additional, Okamoto, Rie, additional, Omote, Shizuko, additional, Nakagawa, Hideaki, additional, Van Chi, Vo, additional, and Kido, Teruhiko, additional

Published
2021
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2. Androgen disruption by dioxin exposure in 5-year-old Vietnamese children: Decrease in serum testosterone level

Author

Oanh, Nguyen Thi Phuong, primary, Kido, Teruhiko, additional, Honma, Seijiro, additional, Oyama, Yuko, additional, Anh, Le Thai, additional, Phuc, Hoang Duc, additional, Viet, Nguyen Hoang, additional, Manh, Ho Dung, additional, Okamoto, Rie, additional, Nakagawa, Hideaki, additional, Nakayama, Shoji F., additional, Nhu, Dang Duc, additional, Van Tung, Dao, additional, Van Chi, Vo, additional, Minh, Nguyen Hung, additional, and Van Toan, Ngo, additional

Published
2018
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3. Reply to the letter to the editor “TCDD and birth weight of Vietnamese infants”

Author

Van Tung, Dao, primary, Kido, Teruhiko, additional, Honma, Seijiro, additional, Manh, Ho Dung, additional, Nhu, Dang Duc, additional, Okamoto, Rie, additional, Maruzeni, Shoko, additional, Nishijo, Muneko, additional, Nakagawa, Hideaki, additional, Ngoc, Pham Thien, additional, Van Toan, Ngo, additional, Hung, Nguyen Ngoc, additional, Minh, Nguyen Hung, additional, and Son, Le Ke, additional

Published
2016
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4. Inverse association of highly chlorinated dioxin congeners in maternal breast milk with dehydroepiandrosterone levels in three-year-old Vietnamese children

Author

Kido, Teruhiko, primary, Honma, Seijiro, additional, Nhu, Dang Duc, additional, Manh, Ho Dung, additional, Van Tung, Dao, additional, Liang, Sun Xian, additional, Anh, Le Thai, additional, Okamoto, Rie, additional, Maruzeni, Shoko, additional, Nakagawa, Hideaki, additional, Hung, Nguyen Ngoc, additional, and Son, Le Ke, additional

Published
2016
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5. Low birth weight of Vietnamese infants is related to their mother’s dioxin and glucocorticoid levels

Author

Van Tung, Dao, primary, Kido, Teruhiko, additional, Honma, Seijiro, additional, Manh, Ho Dung, additional, Nhu, Dang Duc, additional, Okamoto, Rie, additional, Maruzeni, Shoko, additional, Nishijo, Muneko, additional, Nakagawa, Hideaki, additional, Ngoc, Pham Thien, additional, Van Toan, Ngo, additional, Hung, Nguyen Ngoc, additional, Minh, Nguyen Hung, additional, and Son, Le Ke, additional

Published
2016
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6. Levels of polychlorinated dibenzodioxins and polychlorinated dibenzofurans in breast milk samples from three dioxin-contaminated hotspots of Vietnam

Author

Manh, Ho Dung, primary, Kido, Teruhiko, additional, Tai, Pham The, additional, Okamoto, Rie, additional, Honma, Seijiro, additional, Liang, Sun Xian, additional, Anh, Le Thai, additional, Maruzeni, Shoko, additional, Nghi, Tran Ngoc, additional, Nishijo, Muneko, additional, Nakagawa, Hideaki, additional, Nhu, Dang Duc, additional, Van Tung, Dao, additional, Hung, Nguyen Ngoc, additional, and Son, Le Ke, additional

Published
2015
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7. The relationship between dioxins and salivary steroid hormones in Vietnamese primiparae

Author

Manh, Ho Dung, primary, Kido, Teruhiko, additional, Okamoto, Rie, additional, XianLiang, Sun, additional, Viet, Nguyen Hoang, additional, Nakano, Madoca, additional, Tai, Pham The, additional, Maruzeni, Shoko, additional, Nishijo, Muneko, additional, Nakagawa, Hideaki, additional, Suzuki, Hiroyuki, additional, Honma, Seijiro, additional, Van Tung, Dao, additional, Nhu, Dang Duc, additional, Hung, Nguyen Ngoc, additional, and Son, Le Ke, additional

Published
2012
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8. The relationship between dioxins and salivary steroid hormones in Vietnamese primiparae.

Author

Manh HD, Kido T, Okamoto R, Xianliang S, Viet NH, Nakano M, Tai PT, Maruzeni S, Nishijo M, Nakagawa H, Suzuki H, Honma S, Van Tung D, Nhu DD, Hung NN, and Son le K

Subjects
Adult, Cross-Sectional Studies, Female, Gas Chromatography-Mass Spectrometry, Humans, Infant, Newborn, Parity, Spectrometry, Mass, Electrospray Ionization, Tandem Mass Spectrometry, Vietnam, Young Adult, Dioxins metabolism, Gonadal Steroid Hormones metabolism, Milk, Human chemistry, Saliva chemistry
Abstract

Objective: Nearly 40 years after Agent Orange was last sprayed, we conducted a cross-sectional study to evaluate the impact of dioxin exposure on salivary hormones in Vietnamese primiparae. Our previous studies found higher levels of salivary cortisol and cortisone in one of the most highly dioxin-contaminated areas, known as a "hot-spot", than in a non-exposed area. As a result, we suggested that further research with a larger number of participants would be needed to confirm whether dioxin affects steroid hormone levels in Vietnamese primiparae., Methods: The concentration of steroid hormones in saliva was determined by liquid chromatography (electrospray ionization tandem mass spectrometry), whereas the concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in breast milk were determined by gas chromatography-high resolution mass spectrometry, for a sample of the population from a "hot-spot" (n = 16) and a non-exposed area (n = 10). All subjects were aged between 20 and 30 years and had children aged between 4 and 16 weeks., Results: The mean toxic equivalence of PCDDs, PCDFs and PCDDs + PCDFs in breast milk in the hot-spot area was found to be significantly higher than in the non-exposed area (p < 0.001). Likewise, salivary cortisol, cortisone and dehydroepiandrosterone (DHEA) levels were significantly higher in the hotspot area than in the non-exposed area (p < 0.05). As a result, herein we report, for the first time, that salivary DHEA levels in primiparae are higher in a hot-spot than in a non-exposed area, and that this may be the result of dioxin exposure., Conclusions: Our findings highlight the long-term effects of Agent Orange/dioxin on steroid hormones in Vietnamese primiparae in the post-war period.

Published
2013
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