Evidence map›Paper›PMID 26582983›Full record

ArticleFrontiers in human neuroscience2015

Functional Connectivity Disruption in Neonates with Prenatal Marijuana Exposure.

Karen Grewen, Andrew P Salzwedel, Wei Gao

Open access · goldAbstract read
In one paragraph

Article in Frontiers in human neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 4 pooled it
3.7field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 4 syntheses or guidelines pooled it, 68 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Article
  6. Review
  7. Prenatal Downregulation of CBThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  8. Article
  9. Review
  10. Article
  11. Under the Influence: Cognitive Effects of Medical Marijuana on Developing Minds.The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG · 2025
    Article
  12. Review
  13. Impact of Developmental Alcohol Exposure on the Thalamus.Advances in experimental medicine and biology · 2025
    Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Prenatal Substance Exposure.Annual review of developmental psychology · 2023
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Karen GrewenDepartment of Psychiatry, Neurobiology, and Psychology, University of North Carolina Chapel Hill , Chapel Hill, NC , USA.
Andrew P SalzwedelDepartment of Radiology, Biomedical Research Imaging Center, University of North Carolina Chapel Hill , Chapel Hill, NC , USA ; Department of Biomedical Sciences and Imaging, Biomedical Imaging Research Institute, Cedars-Sinai Medical Cente , Los Angeles, CA , USA.
Wei GaoDepartment of Radiology, Biomedical Research Imaging Center, University of North Carolina Chapel Hill , Chapel Hill, NC , USA ; Department of Biomedical Sciences and Imaging, Biomedical Imaging Research Institute, Cedars-Sinai Medical Cente , Los Angeles, CA , USA.
Cedars-Sinai Medical Center · USImaging Center · USUniversity of North Carolina at Chapel Hill · US

Funding

PRENATAL COCAINE AND NEUROBEHAVIORAL FACTORS UNDERLYING MOTHER-INFANT INTERACTIONP01DA022446 · NIDA · UNIV OF NORTH CAROLINA CHAPEL HILL · PI JOHNS, JOSEPHINE M. · 2008 to 2015
$10.2M
Creating Normative Functional Brain Atlases During InfancyR21NS088975 · NINDS · CEDARS-SINAI MEDICAL CENTER · PI GAO, WEI, LIN, WEILI · 2015 to 2016
$447k
Prenatal cocaine exposure and functional connectivity in early infancyR03DA036645 · NIDA · UNIV OF NORTH CAROLINA CHAPEL HILL · PI GAO, WEI, GREWEN, KAREN M · 2014 to 2014
$228k
NIDA NIH HHS P01 DA022446NIDA NIH HHS R03 DA036645NINDS NIH HHS R21 NS088975
6 · The paper itself

Abstract

Prenatal marijuana exposure (PME) is linked to neurobehavioral and cognitive impairments; however, findings in childhood and adolescence are inconsistent. Type-1 cannabinoid receptors (CB1R) modulate fetal neurodevelopment, mediating PME effects on growth of functional circuitry sub-serving behaviors critical for academic and social success. The purpose of this study was to investigate the effects of prenatal marijuana on development of early brain functional circuitry prior to prolonged postnatal environmental influences. We measured resting state functional connectivity during unsedated sleep in infants at 2-6 weeks (+MJ: 20 with PME in combination with nicotine, alcohol, opiates, and/or selective serotonin reuptake inhibitors; -MJ: 23 exposed to the same other drugs without marijuana, CTR: 20 drug-free controls). Connectivity of subcortical seed regions with high fetal CB1R expression was examined. Marijuana-specific differences were observed in insula and three striatal connections: anterior insula-cerebellum, right caudate-cerebellum, right caudate-right fusiform gyrus/inferior occipital, left caudate-cerebellum. +MJ neonates had hypo-connectivity in all clusters compared with -MJ and CTR groups. Altered striatal connectivity to areas involved in visual spatial and motor learning, attention, and in fine-tuning of motor outputs involved in movement and language production may contribute to neurobehavioral deficits reported in this at-risk group. Disrupted anterior insula connectivity may contribute to altered integration of interoceptive signals with salience estimates, motivation, decision-making, and later drug use. Compared with CTRs, both +MJ and -MJ groups demonstrated hyper-connectivity of left amygdala seed with orbital frontal cortex and hypo-connectivity of posterior thalamus seed with hippocampus, suggesting vulnerability to multiple drugs in these circuits.

Indexed as

caudatecerebellumfunctional connectivityinsulaneonatalprenatal marijuanaresting state

Identifiers

PMID26582983
PMCPMC4631947
OpenAlexW2172909546

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.