Cited by 17Prenatal Substance Exposure EffectsNicotinic Acetylcholine Receptors StudySmoking Behavior and Cessation

Prenatal iv nicotine exposure produces a sex difference in sensorimotor gating of the auditory startle reflex in adult rats

Open access
Lacy, Ryan T., Mactutus, Charles F., Harrod, Steven B.·2011·International Journal of Developmental Neuroscience

Abstract

Maternal smoking during pregnancy is associated with auditory processing deficits in children; these effects have been confirmed with animal models of continuous high-dose prenatal nicotine exposure. The present experiments utilized a novel, low-dose, intermittent, intravenous (IV) gestational nicotine exposure model to investigate potential deficits on the preattentive process of sensorimotor gating, as indexed by prepulse inhibition (PPI), in preweanling and adult rat offspring. Pregnant dams received bolus IV injections of nicotine (0.05 mg/kg/injection) 3×/day on gestational days 8-21. Auditory and tactile stimulus modalities were probed with tone and air puff prepulse stimuli, respectively. These prepulse stimuli preceded a 100 dB(A) startle tone by six different interstimulus intervals (ISIs; 0, 8, 40, 80, 120, 4000 ms) to define a curve of response inhibition. The magnitude of PPI increased with age, from 59 to 81% inhibition. Preweanlings (PNDs 14 and 18) and adults (PND 75) gestationally exposed to nicotine exhibited altered startle responding relative to controls, but the nature of the deficit became more localized at later ages. The entire curve of response inhibition in preweanlings exposed to prenatal nicotine (PND 14) was shifted up relative to controls, and notably, did not interact with prepulse stimulus modality, suggesting a generalized increased sensorimotor responsiveness as a function of prenatal nicotine. At PND 18, a shift in the response curve across all ISIs was again noted, but varied as a function of prepulse stimulus modality; the increased sensorimotor responsiveness was specific to the auditory, but not tactile, sensory modality. In adulthood, male and female animals prenatally exposed to nicotine were differentially sensitive to modulation by the ISIs, relative to control male and female animals. Specifically, despite robust PPI, adult females exposed to gestational nicotine were relatively insensitive to changes in ISI from 8 to 120 ms; in contrast, the robust PPI of nicotine-exposed males demonstrated a clear focal point of inhibition at 40 ms. These findings indicate that a low, daily dosing of IV prenatal nicotine produces long-lasting alterations in auditory PPI. An important implication of this research is that "chipping" with smoked-tobacco products during pregnancy may produce enduring changes in sensorimotor processing.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.ijdevneu.2010.12.001

Cites

97 of 97 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Hord LL Moran LM Booze RM Harrod SB Mactutus CF submitted Ontogeny of prepulse inhibition: the role of prepulse sensory modality Int J Dev Neurosci PMC4937996 26415825

Cited by

Sorted by citations

Authors
Lacy, R. T., Mactutus, C. F., & Harrod, S. B.
Affiliations
University of South Carolina (US)
Corresponding author
Harrod, Steven B.
Venue
International Journal of Developmental Neuroscience
Publisher
Wiley
Published
2010-12-08
Volume
29
Issue
2
Pages
153-161
ISSN
  • 0736-5748 (ISSN-L)
  • 1873-474X
OpenAlex
W2018019588
Cited by
17
References
97
Citations by year
2026: 1 · 2022: 1 · 2019: 2 · 2016: 2 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 3
FWCI
2.61
Type
journal article
Language
en
Open access
Locations
  • International Journal of Developmental Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
University of South Carolina (K‐21)
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 › Physiology › Smoking Behavior and Cessation
Keywords
prenatal nicotine exposure, smoking during pregnancy, prepulse inhibition, sensorimotor gating, acoustic startle response, sex differences, auditory processing deficits, interstimulus interval, chipping, rats, startle response
MeSH terms
Acoustic Stimulation, Animals, Female, Ganglionic Stimulants, Humans, Injections, Intravenous, Male, Nicotine, Pregnancy, Prenatal Exposure Delayed Effects, Reflex, Sex Characteristics, Reflex, Startle, Rats, Sprague-Dawley, Rats, Sensory Gating

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review