Cited by 311Prenatal Substance Exposure EffectsNicotinic Acetylcholine Receptors StudyNeonatal Respiratory Health Research

Prenatal nicotine increases pulmonary α7 nicotinic receptor expression and alters fetal lung development in monkeys

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Sekhon, Harmanjatinder S., Jia, Yibing, Raab, Renee, Kuryatov, Alexander, Pankow, James F., Whitsett, Jeffrey A., Lindstrom, Jon, Spindel, Eliot R.·1999·Journal of Clinical Investigation

Abstract

It is well established that maternal smoking during pregnancy is a leading preventable cause of low birth weight and prematurity. Less appreciated is that maternal smoking during pregnancy is also associated with alterations in pulmonary function at birth and greater incidence of respiratory illnesses after birth. To determine if this is the direct result of nicotine interacting with nicotinic cholinergic receptors (nAChRs) during lung development, rhesus monkeys were treated with 1 mg/kg/day of nicotine from days 26 to 134 of pregnancy. Nicotine administration caused lung hypoplasia and reduced surface complexity of developing alveoli. Immunohistochemistry and in situ alpha-bungarotoxin (alphaBGT) binding showed that alpha7 nAChRs are present in the developing lung in airway epithelial cells, cells surrounding large airways and blood vessels, alveolar type II cells, free alveolar macrophages, and pulmonary neuroendocrine cells (PNEC). As detected both by immunohistochemistry and by alphaBGT binding, nicotine administration markedly increased alpha7 receptor subunit expression and binding in the fetal lung. Correlating with areas of increased alpha7 expression, collagen expression surrounding large airways and vessels was significantly increased. Nicotine also significantly increased numbers of type II cells and neuroendocrine cells in neuroepithelial bodies. These findings demonstrate that nicotine can alter fetal monkey lung development by crossing the placenta to interact directly with nicotinic receptors on non-neuronal cells in the developing lung, and that similar effects likely occur in human infants whose mothers smoke during pregnancy.

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  • Prenatal nicotine exposure caused α7 nAChRs in airway, cartilage, and vessels in rhesus monkeys.

    “| [ a7 nAChRs | Prenatal nicotine exposure caused [ a7 nAChRs in airway, | 30 |”

    From Impact of Tobacco Smoke and Nicotine Exposure on Lung Development (2016) · cites this paper as [30]

    The Nicotinic receptor immunohistochemistry section reports that prenatal nicotine markedly increased α7 staining in airway epithelial cells, cartilaginous airway wall regions, and blood vessel walls. Figure 2 (p. 640) also shows α7 staining in control fetuses, so the paper supports increased expression, not the claim that nicotine caused the receptors to appear. It does not establish increased expression in cartilage itself. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Nicotine increases expression of a7 receptors in airway cartilage and vessels of fetal lung.

    “They also found that nicotine increased expression of a7 receptors in airway cartilage and vessels of fetal lung and that other nicotinic receptor subtypes, although expressed in fetal lung, were not upregulated by nicotine.30”
  • Nicotine exposure in pregnant rhesus monkeys causes alveolar hypoplasia in offspring.

    “Sekhon and colleagues 30 implanted nicotine pumps in pregnant rhesus monkeys and found reduced total body weight and alveolar hypoplasia in the offspring.”
  • Other nicotinic receptor subtypes expressed in fetal lung are not upregulated by nicotine.

    “They also found that nicotine increased expression of a7 receptors in airway cartilage and vessels of fetal lung and that other nicotinic receptor subtypes, although expressed in fetal lung, were not upregulated by nicotine.30”
  • Nicotine exposure in pregnant rhesus monkeys reduces total body weight in offspring.

    “Sekhon and colleagues 30 implanted nicotine pumps in pregnant rhesus monkeys and found reduced total body weight and alveolar hypoplasia in the offspring.”

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Research works printed but not linked: 2

  1. [11]11. Thurlbeck, W.M. 1995. Lung growth and development. In Pathology of the lung. W.M. Thurlbeck and A.M. Churg, editors. Thieme Medical Pub- lishers. New York, NY. 37-88.
  2. [27]27. Lindstrom, J. 1996. Neuronal nicotinic acetylcholine receptors. In Ion channels. T. Narahashi, editor. Plenum Press. New York, NY. 377-450.

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Authors
Sekhon, H. S., Jia, Y., Raab, R., Kuryatov, A., Pankow, J. F., Whitsett, J. A., Lindstrom, J., & Spindel, E. R.
Affiliations
  • Oregon National Primate Research Center (US)
  • Oregon Health & Science University (US)
  • University of Pennsylvania (US)
  • Cincinnati Children's Hospital Medical Center (US)
Corresponding author
Spindel, Eliot R.
Venue
Journal of Clinical Investigation
Published
1999-03-01
Volume
103
Issue
5
Pages
637-647
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2122212067
Cited by
311
References
55
Citations by year
2026: 9 · 2025: 1 · 2024: 10 · 2023: 8 · 2022: 3 · 2021: 9 · 2020: 16 · 2019: 12 · 2018: 9 · 2017: 12 · 2016: 6 · 2015: 14 · 2014: 18 · 2013: 7 · 2012: 16
FWCI
11.10
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (RR 00163)
  • National Heart, Lung, and Blood Institute (R01HL038859, HL-56387, P50HL056387, R37HL038859)
  • National Institute of Neurological Disorders and Stroke (R01NS011323)
  • National Center for Research Resources (P51RR000163, K01RR000163, RR-00163.)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD037131, HD/HL-37131)
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Neonatal Respiratory Health Research
Keywords
prenatal nicotine exposure, smoking during pregnancy, alpha7 nicotinic acetylcholine receptor, fetal lung development, pulmonary hypoplasia, alveolar surface area, alveolar type II cells, pulmonary neuroendocrine cells, alpha-bungarotoxin binding, placental transfer, rhesus monkeys, collagen deposition
MeSH terms
Animals, Haplorhini, Female, Embryonic and Fetal Development, Humans, Lung, Nicotine, Pregnancy, Receptors, Nicotinic, Nicotinic Agonists, Maternal Exposure

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