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Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
Chronic lead exposure and pregnancy.
C Savona-Ventura1, M Sammut, G Ducoffre
1Department of Obstetrics and Gynaecology, St. Luke's Hospital, Gwardamangia, Malta.
The International Journal of Risk & Safety in Medicine
|March 21, 2013
Summary
Chronic lead exposure in pregnancy may impact newborns. Higher blood lead levels (PbB) in neonates showed trends toward lower birth weight and longer labor, suggesting potential adverse effects.
Area of Science:
- Environmental Health
- Neonatal Toxicology
- Reproductive Toxicology
Background:
- Lead is a toxic metal with known adverse health effects.
- Prenatal exposure to environmental toxins is a growing public health concern.
- Sub-toxic lead exposure during pregnancy may impact maternal and fetal outcomes.
Purpose of the Study:
- To investigate the association between chronic lead exposure and pregnancy outcomes.
- To determine the effect of prenatal lead exposure on newborn health indicators.
Main Methods:
- Assessed blood lead levels (PbB) in cord blood of 82 newborns.
- Analyzed correlations between PbB and newborn birth weight.
- Examined the relationship between PbB and the duration of the first stage of spontaneous labor.
Main Results:
- 34.1% of neonates had PbB levels exceeding 200 μg/l.
- Trends suggested a decrease in newborn birth weight with increasing PbB (r=-0.1445, P=0.207).
- Trends indicated an increase in the duration of the first stage of labor with rising PbB (r=0.1385, P=0.3043).
Conclusions:
- Chronic sub-toxic lead exposure during pregnancy may adversely affect neonates.
- Lead's interference with enzymatic functions and mineral competition (calcium, zinc) may underlie these effects.
- Further research is warranted to elucidate the mechanisms of lead's impact on pregnancy and newborns.
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