Evidence map›Paper›PMID 19812319›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2009

Chronic nicotine selectively enhances alpha4beta2* nicotinic acetylcholine receptors in the nigrostriatal dopamine pathway.

Cheng Xiao, Raad Nashmi, Sheri McKinney, Haijiang Cai, J Michael McIntosh, Henry A Lester

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
3.2field-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

75 citing papers in PubMed, 113 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Synthetic cooling agents enhance nicotine reinforcement and mesolimbic dopamine signaling.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article

15 more citing papers are in PubMed but not listed here.

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

6 authors at 2 institutions in 2 countries.

Cheng XiaoDivision of Biology, California Institute of Technology, Pasadena, CA 91125, USA.
Raad Nashmi
Sheri McKinney
Haijiang Cai
J Michael McIntosh
Henry A Lester
California Institute of Technology · USUniversity of Victoria · CA

Funding

Novel Neuronal nAChR-Targeted PeptidesR01MH053631 · NIMH · UNIVERSITY OF UTAH · PI MCINTOSH, J MICHAEL · 2001 to 2011
$3.6M
Alpha4 Nicotinic Receptor in Addiction: Mouse ModelsR01DA017279 · NIDA · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI LESTER, HENRY A. · 2004 to 2014
$3.5M
Chronic nicotine: cell-specific receptor and circuit alterations in basal gangliaR01AG033954 · NIA · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI LESTER, HENRY A. · 2009 to 2013
$1.7M
NOVEL NEURONAL NACHR-TARGETED PEPTIDESR29MH053631 · NIMH · UNIVERSITY OF UTAH · PI MCINTOSH, J MICHAEL · 1996 to 2000
$107k
NIA NIH HHS AG033954NIA NIH HHS R01 AG033954NIDA NIH HHS DA17279NIDA NIH HHS R01 DA017279NIMH NIH HHS MH53631NIMH NIH HHS R01 MH053631NIMH NIH HHS R29 MH053631
6 · The paper itself

Abstract

These electrophysiological experiments, in slices and intact animals, study the effects of in vivo chronic exposure to nicotine on functional alpha4beta2* nAChRs in the nigrostriatal dopaminergic (DA) pathway. Recordings were made in wild-type and alpha4 nicotinic acetylcholine receptor (nAChR) subunit knock-out mice. Chronic nicotine enhanced methyllycaconitine citrate hydrate-resistant, dihydro-beta-erythroidine hydrobromide-sensitive nicotinic currents elicited by 3-1000 mum ACh in GABAergic neurons of the substantia nigra pars reticulata (SNr), but not in DA neurons of the substantia nigra pars compacta (SNc). This enhancement leads to higher firing rates of SNr GABAergic neurons and consequently to increased GABAergic inhibition of the SNc DA neurons. In the dorsal striatum, functional alpha4* nAChRs were not found on the neuronal somata; however, nicotine acts via alpha4beta2* nAChRs in the DA terminals to modulate glutamate release onto the medium spiny neurons. Chronic nicotine also increased the number and/or function of these alpha4beta2* nAChRs. These data suggest that in nigrostriatal DA pathway, chronic nicotine enhancement of alpha4beta2* nAChRs displays selectivity in cell type and in nAChR subtype as well as in cellular compartment. These selective events augment inhibition of SNc DA neurons by SNr GABAergic neurons and also temper the release of glutamate in the dorsal striatum. The effects may reduce the risk of excitotoxicity in SNc DA neurons and may also counteract the increased effectiveness of corticostriatal glutamatergic inputs during degeneration of the DA system. These processes may contribute to the inverse correlation between tobacco use and Parkinson's disease.

Indexed as

AnimalsDopamineDrug Administration ScheduleEvoked PotentialsGABA AgentsGlutamic AcidMiceMice, Inbred C57BLNeuronsNicotinePatch-Clamp TechniquesReceptors, NicotinicSubstantia NigraUp-RegulationDopamineGABA AgentsGlutamic AcidNicotinenicotinic receptor alpha4beta2Receptors, Nicotinic

Identifiers

PMID19812319
PMCPMC2787412
OpenAlexW2043762754

What OpenQuestion holds

Textmetadata
LicenceTDM
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.