Cited by 22Neuroscience and Neuropharmacology ResearchPrenatal Substance Exposure EffectsNicotinic Acetylcholine Receptors Study

Prenatal nicotine is associated with reduced AMPA and NMDA receptor-mediated rises in calcium within the laterodorsal tegmentum: a pontine nucleus involved in addiction processes

McNair, L. F., Kohlmeier, K. A.·2015·Journal of Developmental Origins of Health and Disease

Abstract

Despite huge efforts from public sectors to educate society as to the deleterious physiological consequences of smoking while pregnant, 12-25% of all babies worldwide are born to mothers who smoked during their pregnancies. Chief among the negative legacies bestowed to the exposed individual is an enhanced proclivity postnatally to addict to drugs of abuse, which suggests that the drug exposure during gestation changed the developing brain in such a way that biased it towards addiction. Glutamate signalling has been shown to be altered by prenatal nicotine exposure (PNE) and glutamate is the major excitatory neurotransmitter within the laterodorsal tegmental nucleus (LDT), which is a brainstem region importantly involved in responding to motivational stimuli and critical in development of drug addiction-associated behaviours, however, it is unknown whether PNE alters glutamate signalling within this nucleus. Accordingly, we used calcium imaging, to evaluate AMPA and NMDA receptor-mediated calcium responses in LDT brain slices from control and PNE mice. We also investigated whether the positive AMPA receptor modulator cyclothiazide (CYZ) had differential actions on calcium in the LDT following PNE. Our data indicated that PNE significantly decreased AMPA receptor-mediated calcium responses, and altered the neuronal calcium response to consecutive NMDA applications within the LDT. Furthermore, CYZ strongly potentiated AMPA-induced responses, however, this action was significantly reduced in the LDT of PNE mice when compared with enhancements in responses in control LDT cells. Immunohistochemical processing confirmed that calcium imaging recordings were obtained from the LDT nucleus as determined by presence of cholinergic neurons. Our results contribute to the body of evidence suggesting that neurobiological changes are induced if gestation is accompanied by nicotine exposure. We conclude that in light of the role played by the LDT in motivated behaviour, the cellular changes in the LDT induced by exposures to nicotine prenatally, when combined with alterations in other reward-related regions, could contribute to the increased susceptibility to smoking observed in the offspring.

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Crossref · 10.1017/s2040174414000439

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  • Electrophysiological analysis of in vitro brain slices has shown that oral nicotine (300 μg/ml) exposure throughout gestation reduces nicotine-induced intracellular calcium and AMPA-mediated glutamate responses in LDTg neurons.

    “Electrophysiological analysis of in vitro brain slices has shown that oral nicotine (300 μg/ml) exposure throughout gestation reduces nicotine-induced intracellular calcium and AMPA-mediated glutamate responses in LDTg neurons [44,45].”

    From Nicotine on the developing brain. (2023) · cites this paper as [45]

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Authors
McNair, L. F., & Kohlmeier, K. A.
Affiliations
University of Copenhagen (DK)
Corresponding author
Kohlmeier, K. A.
Venue
Journal of Developmental Origins of Health and Disease
Published
2014-11-03
Volume
6
Issue
3
Pages
225-241
ISSN
  • 2040-1744 (ISSN-L)
  • 2040-1752
OpenAlex
W2326541765
Cited by
22
References
100
Citations by year
2026: 2 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 4 · 2020: 2 · 2019: 3 · 2018: 3 · 2017: 1 · 2016: 1 · 2015: 1
FWCI
0.46
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Developmental Origins of Health and Disease (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • 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
Keywords
prenatal nicotine exposure, laterodorsal tegmental nucleus, AMPA receptors, NMDA receptor, glutamate signalling, calcium imaging, cyclothiazide, cholinergic neurons, maternal smoking, brain development, motivated behavior
MeSH terms
Animals, Calcium, Female, Humans, Motivation, Nicotine, Pregnancy, Prenatal Exposure Delayed Effects, Tegmentum Mesencephali, Signal Transduction, Receptors, N-Methyl-D-Aspartate, N-Methylaspartate, Receptors, AMPA, alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid, Glutamic Acid, Substance-Related Disorders, Mice

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