Evidence map›Paper›PMID 21529784›Full record

ArticleBrain research2011

Behavioral effects of clozapine: involvement of trace amine pathways in C. elegans and M. musculus.

Rakesh Karmacharya, Spencer K Lynn, Sarah Demarco, Angelica Ortiz, Xin Wang, Miriam Y Lundy, Zhihua Xie, Bruce M Cohen, Gregory M Miller, Edgar A Buttner

Abstract read
In one paragraph

Article in Brain research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.5field-weighted citation impact, top 42% 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

14 citing papers in PubMed, 24 citations in OpenAlex.

  1. Review
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  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Crossing the Worm-Brain Barrier by UsingMolecular neuropsychiatry · 2018
    Review
  9. Clozapine Modulates Glucosylceramide, Clears Aggregated Proteins, and Enhances ATG8/LC3 in Caenorhabditis elegans.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2017
    Article
  10. Article
  11. Review
  12. Article
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  14. Review
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

10 authors at 2 institutions in 1 country.

Rakesh KarmacharyaDepartment of Psychiatry, Harvard Medical School, Boston, MA 02115, USA.
Spencer K Lynn
Sarah Demarco
Angelica Ortiz
Xin Wang
Miriam Y Lundy
Zhihua Xie
Bruce M Cohen
Gregory M Miller
Edgar A Buttner
McLean Hospital · USHarvard University · US

Funding

ZETA CHAIN OF T CELL RECEPTOR INTERACTS W/ NEF OF SIV &HIV2P51RR000168 · NCRR · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WESTMORELAND, SUSAN V. · 1985 to 2011
$139.3M
Trace Amine Receptors in Non Human PrimatesR01DA016606 · NIDA · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI MILLER, GREGORY MICHAEL · 2004 to 2007
$1.2M
Wnt/GSK3/beta Catenin Signaling as a Target for Treatment of Bipolar DisorderK08MH086846 · NIMH · MCLEAN HOSPITAL · PI KARMACHARYA, RAKESH · 2010 to 2014
$901k
Functional Genomics of C.elegans Used To Study DiseaseK08NS002083 · NINDS · MC LEAN HOSPITAL (BELMONT, MA) · PI BUTTNER, EDGAR A · 2001 to 2006
$668k
Drug Abuse-related Neurobiology and Genetic Variance Modeled in Rhesus MonkeysK02DA025697 · NIDA · HARVARD MEDICAL SCHOOL · PI MILLER, GREGORY MICHAEL · 2009 to 2013
$615k
MOUSE MODELS OF CANCER, BONE DISEASE, AND LACTATIONK26RR000168 · NCRR · OHIO STATE UNIVERSITY · PI ROSOL, THOMAS J · 2000 to 2004
$547k
Methamphetamine Effects via Trace Amine Associated Receptor 1R21DA022323 · NIDA · HARVARD MEDICAL SCHOOL · PI MILLER, GREGORY MICHAEL · 2007 to 2009
$484k
Neurogenetics of serotonin regulation: building naturalistic rhesus monkey modelsR21MH077995 · NIMH · HARVARD MEDICAL SCHOOL · PI MILLER, GREGORY MICHAEL · 2008 to 2009
$429k
TAAR1 polymorphisms in rhesus monkeysR03DA025802 · NIDA · HARVARD MEDICAL SCHOOL · PI MILLER, GREGORY MICHAEL · 2009 to 2010
$174k
NCRR NIH HHS K26 RR000168NCRR NIH HHS P51 RR000168NCRR NIH HHS RR00168NIDA NIH HHS DA016606NIDA NIH HHS DA025697NIDA NIH HHS DA025802NIDA NIH HHS K02 DA025697NIDA NIH HHS R01 DA016606NIDA NIH HHS R03 DA025802NIDA NIH HHS R21 DA022323NIMH NIH HHS K08 MH086846NIMH NIH HHS K08MH086846NIMH NIH HHS R21 MH077995NINDS NIH HHS K08 NS002083NINDS NIH HHS K08NS002083
6 · The paper itself

Abstract

Clozapine is an antipsychotic medication with superior efficacy in treatment refractory schizophrenia. The molecular basis of clozapine's therapeutic profile is not well understood. We studied behavioral effects of clozapine in Caenorhabditis elegans to identify novel pathways that modulate clozapine's biological effects. Clozapine stimulated egg laying in C. elegans in a dose-dependent manner. This effect was clozapine-specific, as it was not observed with exposure to a typical antipsychotic, haloperidol or an atypical antipsychotic, olanzapine. A candidate gene screen of biogenic amine neurotransmitter systems identified signaling pathways that mediate this clozapine-specific effect on egg laying. Specifically, we found that clozapine-induced increase in egg laying requires tyramine biosynthesis. To test the implications of this finding across species, we explored whether trace amine systems modulate clozapine's behavioral effects in mammals by studying trace amine-associated receptor 1 (TAAR1) knockout mice. Clozapine increased prepulse inhibition (PPI) in wild-type mice. This increase in PPI was abrogated in TAAR1 knockout mice, implicating TAAR1 in clozapine-induced PPI enhancement. In transfected mammalian cell lines, we found no TAAR activation by antipsychotics, suggesting that modulation of trace amine signaling in mice does not occur directly at the receptor itself. In summary, we report a heretofore-unknown role for trace amine systems in clozapine-mediated effects across two species: C. elegans and mice.

Indexed as

Caenorhabditis elegansMice, KnockoutAnimalsAntipsychotic AgentsBehavior, AnimalBiogenic AminesClozapineHEK293 CellsHumansMiceMice, Inbred C57BLOvipositionReceptors, G-Protein-CoupledSchizophreniaSignal TransductionSpecies SpecificityAntipsychotic AgentsBiogenic AminesClozapineReceptors, G-Protein-CoupledTrace Amine-Associated Receptors

Identifiers

PMID21529784
PMCPMC3107707
OpenAlexW2069749874

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.