Evidence map›Paper›PMID 19429067›Full record

ArticleNeuroscience letters2009

Age-related changes in dorsal root ganglia, circulating and vascular calcitonin gene-related peptide (CGRP) concentrations in female rats: effect of female sex steroid hormones.

Pandu R R Gangula, Madhu Chauhan, Luckey Reed, Chandra Yallampalli

Open access · greenAbstract read
In one paragraph

Article in Neuroscience letters, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
0.7field-weighted citation impact, top 34% 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

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Endogenous Vasoactive Peptides and Vascular Aging-Related Diseases.Oxidative medicine and cellular longevity · 2022
    Review
  11. Article
  12. Article
  13. Gender aspects of CGRP in migraine.Cephalalgia : an international journal of headache · 2019
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Inotropic and lusitropic effects of calcitonin gene-related peptide in the heart.American journal of physiology. Heart and circulatory physiology · 2013
    Article
  20. Protective cardiovascular and renal actions of vitamin D and estrogen.Frontiers in bioscience (Scholar edition) · 2013
    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

4 authors at 2 institutions in 1 country.

Pandu R R GangulaDepartment of Obstetrics and Gynecology, Meharry Medical College, 1005 Dr. D.B. Todd Jr. Boulevard, Nashville, TN 37208, United States. pgangula@mmc.edu
Madhu Chauhan
Luckey Reed
Chandra Yallampalli
The University of Texas Medical Branch at Galveston · USMeharry Medical College · US

Funding

CALCITONIN GENE RELATED PEPTIDE AND AGINGR03AG018999 · NIA · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI GANGULA, PANDU R · 2000 to 2000
$75k
NIA NIH HHS R03 AG018999NIA NIH HHS R03AG018999-01
6 · The paper itself

Abstract

The aim of the present study is to investigate whether immunoreactive (I) calcitonin gene-related peptide (CGRP) content is decreased in plasma and mesenteric arteries (resistance arteries) in middle-aged rats and if so, whether sex steroid hormones enhance I-CGRP in middle-aged female rats. We also examined whether vascular CGRP receptor components, calcitonin receptor like receptor (CRLR) and receptor activity modifying protein 1 (RAMP1) are elevated by sex steroid hormones treatment in middle-aged female rats. Young adult (3 months old) and middle-aged (10-12 months old) ovariectomized rats were treated subcutaneously with estradiol-17beta (E2; 2 mg), progesterone (P4; 5 mg), E2+P4 (2 mg+20 mg) or placebo (control). Radioimmunoassay and Western blot analysis were performed to measure I-CGRP content and CGRP receptor components in dorsal root ganglia (DRG), in resistance arteries and in plasma. Immunofluorescent staining methods were employed to determine cellular localization of CRLR, RAMP1 in resistance arteries. Our data demonstrated that I-CGRP content was significantly (p<0.05) lower in the plasma and resistance arteries of middle-aged female rats compared to young controls. Both RAMP1 and CRLR were concentrated in vascular endothelium and the underlying smooth muscle cells. RAMP1 but not CRLR appeared to be decreased in middle-aged rat vasculature. Chronic perfusion of sex steroid hormones to ovariectomized rats: 1 significantly (p<0.05) elevated I-CGRP in the DRG and in the plasma, and (2) significantly elevated RAMP1 (p<0.05) but did not alter CRLR in resistance arteries. These data suggest that female sex steroid treatment enhances I-CGRP and its receptors, and thus regulate the blood pressure in aged female rats.

Indexed as

AgingAnimalsCalcitonin Gene-Related PeptideCalcitonin Receptor-Like ProteinEndothelium, VascularEstradiolFemaleGanglia, SpinalHormonesIntracellular Signaling Peptides and ProteinsMembrane ProteinsMesenteric ArteriesMyocytes, Smooth MuscleOvariectomyProgesteroneRatsCalcitonin Gene-Related PeptideCalcitonin Receptor-Like ProteinCalcrl protein, ratEstradiolHormonesIntracellular Signaling Peptides and ProteinsMembrane ProteinsProgesteroneRamp1 protein, ratReceptor Activity-Modifying Protein 1Receptor Activity-Modifying ProteinsReceptors, Calcitonin

Identifiers

PMID19429067
PMCPMC2782373
OpenAlexW2079811127

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.