Document Detail

Maternal exposure to high levels of dioxins in relation to birth weight in women affected by Yusho disease.
MedLine Citation:
PMID:  21982037     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Studies on the association of maternal exposure to polychlorinated dibenzo-p-dioxin (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) with decreased birth weight in humans have produced conflicting results. In Japan in 1968, an accidental human exposure to rice oil contaminated with PCDDs, PCDFs, and PCBs, led to the development of Yusho disease.
OBJECTIVE: The Yusho cohort was used to evaluate the effect of maternal exposure to PCDDs, PCDFs, and PCBs on birth weight.
METHODS: Blood samples, obtained from 101 Yusho women (190 births) who gave birth after exposure, were analyzed for congeners of seven PCDDs, ten PCDFs, and four non-ortho PCBs.
RESULTS: Total PCDD TEQ (adjusted beta=-161.9g; 95% CI, -265.3 to -58.6), total PCDF TEQ (adjusted beta=-105.9g; 95% CI, -179.5 to -32.2), and total non-ortho PCBs (adjusted beta=-178.4g; 95% CI, -318.3 to -38.5) levels were inversely associated with birth weight. Significant inverse associations with birth weight were also found for total PCDD TEQ, total PCDF TEQ, and total non-ortho PCB TEQ levels among male, but not female, infants. Significant inverse associations with birth weight were also found for nine congeners among all infants; the adjusted beta coefficients were largest for 1,2,3,6,7,8-HxCDD and smallest for 2,3,4,7,8-PeCDF.
CONCLUSION: In the setting of exposure to high levels of dioxins, maternal blood levels of PCDDs, PCDFs and PCBs are associated with lower birth weight in Yusho patients. The association exhibited gender-specific differences, as male infants are more susceptible than females to growth restriction induced by in utero dioxin exposures.
Kiyomi Tsukimori; Hiroshi Uchi; Chikage Mitoma; Fumiko Yasukawa; Takahito Chiba; Takashi Todaka; Junboku Kajiwara; Takesumi Yoshimura; Teruaki Hirata; Kotaro Fukushima; Norio Wake; Masutaka Furue
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-09-22
Journal Detail:
Title:  Environment international     Volume:  38     ISSN:  1873-6750     ISO Abbreviation:  Environ Int     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2011-10-10     Completed Date:  2011-12-12     Revised Date:  2014-04-04    
Medline Journal Info:
Nlm Unique ID:  7807270     Medline TA:  Environ Int     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  79-86     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
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MeSH Terms
Benzofurans / blood
Birth Weight / drug effects*
Cohort Studies
Dioxins / blood*
Food Contamination
Japan / epidemiology
Maternal Exposure / statistics & numerical data*
Oryza sativa / adverse effects
Polychlorinated Biphenyls / blood
Porphyrias / chemically induced*,  epidemiology
Tetrachlorodibenzodioxin / analogs & derivatives,  blood
Young Adult
Reg. No./Substance:
0/Benzofurans; 0/Dioxins; 0/chlorinated dibenzofurans; 0/polychlorodibenzo-4-dioxin; DFC2HB4I0K/Polychlorinated Biphenyls; DO80M48B6O/Tetrachlorodibenzodioxin; O1B5KJ235I/dibenzo(1,4)dioxin
Comment In:
Environ Int. 2014 Mar;64:69-70   [PMID:  24374779 ]

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