Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury
Objective To determine possible exposure-associated delays in auditory brainstem evoked potential latencies as an objective measure of neurobehavioral toxicity in 14-year-old children with developmental exposure to methylmercury (MeHg) from seafood. Study design Prospective study of a birth cohort i...
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ftharvardudash:oai:dash.harvard.edu:1/34787242 2023-05-15T16:10:55+02:00 Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury Murata, Katsuyuki Weihe, Pal Budtz-Jørgensen, Esben Jørgensen, Poul J Grandjean, Philippe 2004 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:34787242 https://doi.org/10.1016/j.jpeds.2003.10.059 en_US eng Elsevier BV doi:10.1016/j.jpeds.2003.10.059 The Journal of Pediatrics Murata, Katsuyuki, Pál Weihe, Esben Budtz-Jørgensen, Poul J Jørgensen, and Philippe Grandjean. 2004. “Delayed Brainstem Auditory Evoked Potential Latencies in 14-Year-Old Children Exposed to Methylmercury.” The Journal of Pediatrics 144 (2) (February): 177–183. doi:10.1016/j.jpeds.2003.10.059. 0022-3476 http://nrs.harvard.edu/urn-3:HUL.InstRepos:34787242 BAEP Brainstem auditory evoked potential BMD Benchmark dose BMDL Benchmark dose level BMR Benchmark response MeHg Methylmercury NRC National Research Council PCB Polychlorinated biphenyl Journal Article 2004 ftharvardudash https://doi.org/10.1016/j.jpeds.2003.10.059 2022-04-05T18:51:56Z Objective To determine possible exposure-associated delays in auditory brainstem evoked potential latencies as an objective measure of neurobehavioral toxicity in 14-year-old children with developmental exposure to methylmercury (MeHg) from seafood. Study design Prospective study of a birth cohort in the Faroe Islands, where 878 of eligible children (87%) were examined at age 14 years. Latencies of brainstem evoked potential peaks I, III, and V at 20 and 40 Hz constituted the outcome variables. Mercury concentrations were determined in cord blood and maternal hair, and in the child's hair at ages 7 and 14. Results Latencies of peaks III and V increased by about 0.012 ms when the cord blood mercury concentration doubled. As seen at age 7 years, this effect appeared mainly within the I–III interpeak interval. Despite lower postnatal exposures, the child's hair mercury level at age 14 years was associated with prolonged III–V interpeak latencies. All benchmark dose results were similar to those obtained for dose-response relationships at age 7 years. Conclusions The persistence of prolonged I–III interpeak intervals indicates that some neurotoxic effects from intrauterine MeHg exposure are irreversible. A change in vulnerability to MeHg toxicity is suggested by the apparent sensitivity of the peak III–V component to recent MeHg exposure. Accepted Manuscript Article in Journal/Newspaper Faroe Islands Harvard University: DASH - Digital Access to Scholarship at Harvard Faroe Islands The Journal of Pediatrics 144 2 177 183 |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
topic |
BAEP Brainstem auditory evoked potential BMD Benchmark dose BMDL Benchmark dose level BMR Benchmark response MeHg Methylmercury NRC National Research Council PCB Polychlorinated biphenyl |
spellingShingle |
BAEP Brainstem auditory evoked potential BMD Benchmark dose BMDL Benchmark dose level BMR Benchmark response MeHg Methylmercury NRC National Research Council PCB Polychlorinated biphenyl Murata, Katsuyuki Weihe, Pal Budtz-Jørgensen, Esben Jørgensen, Poul J Grandjean, Philippe Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
topic_facet |
BAEP Brainstem auditory evoked potential BMD Benchmark dose BMDL Benchmark dose level BMR Benchmark response MeHg Methylmercury NRC National Research Council PCB Polychlorinated biphenyl |
description |
Objective To determine possible exposure-associated delays in auditory brainstem evoked potential latencies as an objective measure of neurobehavioral toxicity in 14-year-old children with developmental exposure to methylmercury (MeHg) from seafood. Study design Prospective study of a birth cohort in the Faroe Islands, where 878 of eligible children (87%) were examined at age 14 years. Latencies of brainstem evoked potential peaks I, III, and V at 20 and 40 Hz constituted the outcome variables. Mercury concentrations were determined in cord blood and maternal hair, and in the child's hair at ages 7 and 14. Results Latencies of peaks III and V increased by about 0.012 ms when the cord blood mercury concentration doubled. As seen at age 7 years, this effect appeared mainly within the I–III interpeak interval. Despite lower postnatal exposures, the child's hair mercury level at age 14 years was associated with prolonged III–V interpeak latencies. All benchmark dose results were similar to those obtained for dose-response relationships at age 7 years. Conclusions The persistence of prolonged I–III interpeak intervals indicates that some neurotoxic effects from intrauterine MeHg exposure are irreversible. A change in vulnerability to MeHg toxicity is suggested by the apparent sensitivity of the peak III–V component to recent MeHg exposure. Accepted Manuscript |
format |
Article in Journal/Newspaper |
author |
Murata, Katsuyuki Weihe, Pal Budtz-Jørgensen, Esben Jørgensen, Poul J Grandjean, Philippe |
author_facet |
Murata, Katsuyuki Weihe, Pal Budtz-Jørgensen, Esben Jørgensen, Poul J Grandjean, Philippe |
author_sort |
Murata, Katsuyuki |
title |
Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
title_short |
Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
title_full |
Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
title_fullStr |
Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
title_full_unstemmed |
Delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
title_sort |
delayed brainstem auditory evoked potential latencies in 14-year-old children exposed to methylmercury |
publisher |
Elsevier BV |
publishDate |
2004 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:34787242 https://doi.org/10.1016/j.jpeds.2003.10.059 |
geographic |
Faroe Islands |
geographic_facet |
Faroe Islands |
genre |
Faroe Islands |
genre_facet |
Faroe Islands |
op_relation |
doi:10.1016/j.jpeds.2003.10.059 The Journal of Pediatrics Murata, Katsuyuki, Pál Weihe, Esben Budtz-Jørgensen, Poul J Jørgensen, and Philippe Grandjean. 2004. “Delayed Brainstem Auditory Evoked Potential Latencies in 14-Year-Old Children Exposed to Methylmercury.” The Journal of Pediatrics 144 (2) (February): 177–183. doi:10.1016/j.jpeds.2003.10.059. 0022-3476 http://nrs.harvard.edu/urn-3:HUL.InstRepos:34787242 |
op_doi |
https://doi.org/10.1016/j.jpeds.2003.10.059 |
container_title |
The Journal of Pediatrics |
container_volume |
144 |
container_issue |
2 |
container_start_page |
177 |
op_container_end_page |
183 |
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1765996057839271936 |