Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia
Introduction: The Hazelwood coal mine fire was an unprecedented event in Australian history that resulted in the surrounding towns in regional Victoria being covered in plumes of smoke and ash for six weeks in 2014. Evidence concerning adverse reproductive impacts associated with maternal exposure t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-06-01
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| Series: | Environment International |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412018331878 |
| _version_ | 1811310080951320576 |
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| author | Shannon M. Melody Jane Ford Karen Wills Alison Venn Fay H. Johnston |
| author_facet | Shannon M. Melody Jane Ford Karen Wills Alison Venn Fay H. Johnston |
| author_sort | Shannon M. Melody |
| collection | DOAJ |
| description | Introduction: The Hazelwood coal mine fire was an unprecedented event in Australian history that resulted in the surrounding towns in regional Victoria being covered in plumes of smoke and ash for six weeks in 2014. Evidence concerning adverse reproductive impacts associated with maternal exposure to ambient air pollution is expanding. Gaps remain regarding the relative impact of acute changes in outdoor air quality lasting days to months, such as that resulting from coal mine fires. Methods: Routinely collected perinatal data was used to define a complete cohort of singleton babies born within the affected region. Maternal average, and peak, fine particulate matter (PM2.5) was assigned to residential address at time of delivery using a chemical transport model. Maternal, infant, meteorological and temporal variables were adjusted for in final linear and log-binomial regression models. Results: There were a total of 3591 singleton livebirths during the study period; 763 of which were in utero during the coal mine fire. Average PM2.5 exposure was 4.4 μg/m3 (median 1.9; IQR 2.1 μg/m3) and peak was 45.0 μg/m3 (median 30.4; IQR 35.1 μg/m3). There was no association between coal mine fire-attributable PM2.5 and fetal growth or gestational maturity outcomes. However, there was weak evidence that gestational diabetes mellitus was an effect modifier in the relationship between maternal PM2.5 exposure and birth weight. Babies born to exposed gestational diabetic mothers were 97 g heavier per 10 μg/m3 increase in average PM2.5 exposure (95%CI 74, 120 g). No association was observed among mothers without gestational diabetes. Conclusion: Maternal exposure to fine particulate matter resulting from the 2014 Hazelwood coal mine fire did not appear to adversely effect fetal maturity. However, there was weak evidence of a trophic response among babies born to exposed mothers with gestational diabetes, a possible susceptibility that requires further exploration. |
| first_indexed | 2024-04-13T09:52:28Z |
| format | Article |
| id | doaj.art-ee0e2b9362864e438c3259d0ea586aed |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-04-13T09:52:28Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-ee0e2b9362864e438c3259d0ea586aed2022-12-22T02:51:33ZengElsevierEnvironment International0160-41202019-06-01127233242Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, AustraliaShannon M. Melody0Jane Ford1Karen Wills2Alison Venn3Fay H. Johnston4Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania, AustraliaClinical and Population Perinatal Health Research, Kolling Institute, Northern Sydney Local health District, St Leonards, New South Wales, Australia; Northern Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, AustraliaMenzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania, AustraliaMenzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania, AustraliaMenzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania, Australia; Corresponding author at: c/o Private Bag 23, Menzies Institute for Medical Research, Hobart, Tasmania 7001, Australia.Introduction: The Hazelwood coal mine fire was an unprecedented event in Australian history that resulted in the surrounding towns in regional Victoria being covered in plumes of smoke and ash for six weeks in 2014. Evidence concerning adverse reproductive impacts associated with maternal exposure to ambient air pollution is expanding. Gaps remain regarding the relative impact of acute changes in outdoor air quality lasting days to months, such as that resulting from coal mine fires. Methods: Routinely collected perinatal data was used to define a complete cohort of singleton babies born within the affected region. Maternal average, and peak, fine particulate matter (PM2.5) was assigned to residential address at time of delivery using a chemical transport model. Maternal, infant, meteorological and temporal variables were adjusted for in final linear and log-binomial regression models. Results: There were a total of 3591 singleton livebirths during the study period; 763 of which were in utero during the coal mine fire. Average PM2.5 exposure was 4.4 μg/m3 (median 1.9; IQR 2.1 μg/m3) and peak was 45.0 μg/m3 (median 30.4; IQR 35.1 μg/m3). There was no association between coal mine fire-attributable PM2.5 and fetal growth or gestational maturity outcomes. However, there was weak evidence that gestational diabetes mellitus was an effect modifier in the relationship between maternal PM2.5 exposure and birth weight. Babies born to exposed gestational diabetic mothers were 97 g heavier per 10 μg/m3 increase in average PM2.5 exposure (95%CI 74, 120 g). No association was observed among mothers without gestational diabetes. Conclusion: Maternal exposure to fine particulate matter resulting from the 2014 Hazelwood coal mine fire did not appear to adversely effect fetal maturity. However, there was weak evidence of a trophic response among babies born to exposed mothers with gestational diabetes, a possible susceptibility that requires further exploration.http://www.sciencedirect.com/science/article/pii/S0160412018331878 |
| spellingShingle | Shannon M. Melody Jane Ford Karen Wills Alison Venn Fay H. Johnston Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia Environment International |
| title | Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia |
| title_full | Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia |
| title_fullStr | Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia |
| title_full_unstemmed | Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia |
| title_short | Maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in Victoria, Australia |
| title_sort | maternal exposure to fine particulate matter from a coal mine fire and birth outcomes in victoria australia |
| url | http://www.sciencedirect.com/science/article/pii/S0160412018331878 |
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