Evidence map›Paper›PMID 20466023›Full record

ArticleBehavioural brain research2010

Reproductive status regulates expression of sex steroid and GnRH receptors in the olfactory bulb.

Karen P Maruska, Russell D Fernald

Open access · greenAbstract read
In one paragraph

Article in Behavioural brain research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
9.0field-weighted citation impact, top 3% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Behavioral, Endocrine, and Neuronal Responses to Odors in Lampreys.Animals : an open access journal from MDPI · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. Olfactory and gustatory dysfunctions of COVID-19 patients in China: A multicenter study.World journal of otorhinolaryngology - head and neck surgery · 2022
    Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Acute effects of sex steroids on visual processing in male goldfish.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2018
    Article
  17. Article
  18. Article
  19. 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

2 authors at 1 institution in 1 country.

Karen P MaruskaBiology Department, Stanford University, 371 Serra Mall, Stanford, CA 94305, USA. maruska@stanford.edu
Russell D Fernald
Stanford University · US

Funding

SOCIAL AND PHYSIOLOGICAL REGULATION OF MATURATIONR01NS034950 · NINDS · STANFORD UNIVERSITY · PI HELLER, H CRAIG · 1995 to 2017
$3.8M
SOCIAL AND PHYSIOLOGICAL REGULATIONS OF MATURATIONR37NS034950 · NINDS · STANFORD UNIVERSITY · PI FERNALD, RUSSELL DAWSON · 1999 to 2005
$1.9M
Social and Physiological Regulation of MaturationR56NS034950 · NINDS · STANFORD UNIVERSITY · PI FERNALD, RUSSELL D · 2007 to 2007
$394k
Regulation of GnRH1 neuron morphological plasticityF32NS061431 · NINDS · STANFORD UNIVERSITY · PI MARUSKA, KAREN P · 2009 to 2011
$151k
NINDS NIH HHS F32 NS 061431NINDS NIH HHS F32 NS061431NINDS NIH HHS NS 034950NINDS NIH HHS R01 NS034950NINDS NIH HHS R37 NS034950NINDS NIH HHS R56 NS034950
6 · The paper itself

Abstract

Neuromodulators including gonadotropin-releasing hormone (GnRH) and sex steroids help integrate an animal's internal physiological state with incoming external cues, and can have profound effects on the processing of behaviorally relevant information, particularly from the olfactory system. While GnRH and steroid receptors are present in olfactory processing regions across vertebrates, little is known about whether their expression levels change with internal physiological state or external social cues. We used qRT-PCR to measure mRNA levels of two GnRH receptors (GnRH-R1, GnRH-R2), five sex steroid receptors (estrogen receptors: ERalpha, ERbetaa, ERbetab; androgen receptors: ARalpha, ARbeta), and aromatase in the olfactory bulb of the highly social African cichlid fish Astatotilapia burtoni. We asked whether these receptor levels changed with reproductive condition in females, or with social status, which regulates reproductive capacity in males. Our results reveal that mRNA levels of multiple sex steroid, GnRH receptor subtypes, and aromatase in the olfactory bulb vary with sex, social status in males, and reproductive condition in females, which highlights the potential importance of changing receptor levels in fine-tuning the olfactory system during the reproductive cycle. Further, steroid receptor mRNA levels were positively correlated with circulating steroid levels in males, but negatively correlated in females, suggesting different regulatory control between sexes. These results provide support for the hypothesis that the first-order olfactory relay station is a substrate for both GnRH and sex steroid modulation, and suggest that changes in receptor levels could be an important mechanism for regulating reproductive, social, and seasonal plasticity in olfactory perception observed across vertebrates.

Indexed as

AnimalsAromataseCichlidsEstradiolEstrogen Receptor alphaEstrogen Receptor betaFemaleGene Expression RegulationMaleOlfactory BulbReceptors, AndrogenReceptors, LHRHReproductionSex CharacteristicsTestosterone11-ketotestosteroneAromataseEstradiolEstrogen Receptor alphaEstrogen Receptor betaReceptors, AndrogenReceptors, LHRHTestosterone

Identifiers

PMID20466023
PMCPMC2902620
OpenAlexW2021721028

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.