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Cigarette smoking during pregnancy

Alison K Shea1, Meir Steiner

  • 1Women's Health Concerns Clinic, St. Joseph's Healthcare, Department of Psychiatry & Behavioural Neuroscience, McMaster University, Canada.

Nicotine & Tobacco Research : Official Journal of the Society for Research on Nicotine and Tobacco
|February 1, 2008
PubMed

Insights

Maternal smoking during pregnancy harms fetal development, leading to issues like preterm birth and SIDS. Nicotine exposure disrupts neurotransmitter systems, impacting long-term neurodevelopment and behavior.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Toxicology

Background:

  • Maternal smoking during pregnancy is linked to adverse offspring outcomes.
  • Physiological mechanisms behind these effects are not fully understood.
  • Known outcomes include preterm delivery, growth restriction, SIDS, and long-term behavioral disorders.

Purpose of the Study:

  • To review animal and human data on in utero smoke exposure and neurodevelopmental outcomes.
  • To elucidate the physiological mechanisms linking maternal smoking to adverse fetal neurodevelopment.

Main Methods:

  • Review of existing animal and human studies.
  • Analysis of data linking in utero smoke exposure to neurodevelopmental deficits.

Main Results:

  • Nicotine affects placental vasculature and fetal membrane nicotinic acetylcholine receptors.
  • Exposure triggers a cascade disrupting nicotinic, muscarinic, catecholaminergic, and serotonergic systems.
  • Potential for long-term neurotransmitter dysregulation affecting emotion and attention.

Conclusions:

  • Maternal smoking significantly impairs fetal neurodevelopment through complex physiological pathways.
  • Further research is needed to fully understand long-term neurotransmitter involvement.
  • Pregnant women must be advised to abstain from smoking for healthy fetal development.

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