Evidence map›Paper›PMID 22088913›Full record

ArticleBiology of reproduction2012

Protein restriction to pregnant rats increases the plasma levels of angiotensin II and expression of angiotensin II receptors in uterine arteries.

Haijun Gao, Uma Yallampalli, Chandra Yallampalli

Open access · bronzeAbstract read
In one paragraph

Article in Biology of reproduction, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 22 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Amino Acids in Reproductive Nutrition and Health.Advances in experimental medicine and biology · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Ontogeny of angiotensin type 2 and type 1 receptor expression in mice.Journal of the renin-angiotensin-aldosterone system : JRAAS · 2012
    Article
  16. Developmental programming of hypertension and kidney disease.International journal of nephrology · 2012
    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 1 institution in 1 country.

Haijun GaoDepartment of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, Texas 77555-1062, USA.
Uma Yallampalli
Chandra Yallampalli
The University of Texas Medical Branch at Galveston · US

Funding

SEX STEROID HORMONES AND CALCITONIN GENE RELATED PEPTIDER01HL058144 · NHLBI · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI CHAUHAN, MADHU LATA S., YALLAMPALLI, CHANDRASEKHAR · 1998 to 2022
$6.9M
Developmental programming: influence of sex steroids and mechanismsR01HL102866 · NHLBI · UNIVERSITY OF TEXAS MED BR GALVESTON · PI YALLAMPALLI, CHANDRASEKHAR · 2011 to 2014
$1.5M
NHLBI NIH HHS R01 HL058144NHLBI NIH HHS R01 HL102866
6 · The paper itself

Abstract

Whether gestational protein restriction affects the renin-angiotensin system (RAS) in uterine artery remains unknown. In this study, we hypothesized that gestational protein restriction alters the expression of RAS components in uterine artery. In study one, time-scheduled pregnant Sprague Dawley rats were fed a normal or low-protein (LP) diet from Day 3 of pregnancy until they were killed at Days 19 and 22. The uterine arteries were collected and used for gene expression of Ace, Ace2, Agtr1a, Agtr1b, Agtr2, Esr1, and Esr2 by quantitative real-time PCR and/or Western blotting. LP increased plasma levels of angiotensin II in pregnant rats. In the uterine artery, the expressions of Agtr1a, Agtr1b, and Esr1 were increased by LP at Days 19 and 22 of pregnancy, whereas the abundance of AGTR1 and AGTR2 was increased by LP at Day 19 of pregnancy. The expression of Ace2 was not detectable in rat uterine artery. In study two, virgin female rats were ovariectomized and implanted with either 17beta-estradiol (E2), progesterone (P4), both E2 and P4, or placebo pellets until they were killed 7 days later. In rat uterine artery, E2 and P4 reduced the expression of Agtr1a, and E2 increased the expression of Agtr1b and Agtr2, but neither E2 nor P4 regulated the expression of Ace. These results indicate that gestational protein restriction induces an increase in Agtr1 expression in uterine artery, and thus may exacerbate the vasoconstriction to elevated angiotensin II present in maternal circulation, and that female sex hormones also play a role in this process.

Indexed as

Diet, Protein-RestrictedAngiotensin IIAnimalsEstrogen Receptor alphaEstrogen Receptor betaFemaleModels, AnimalPeptidyl-Dipeptidase APregnancyPregnancy, AnimalRatsRats, Sprague-DawleyReceptors, AngiotensinRegional Blood FlowUterine ArteryVasoconstrictionAngiotensin IIEstrogen Receptor alphaEstrogen Receptor betaPeptidyl-Dipeptidase AReceptors, Angiotensin

Identifiers

PMID22088913
PMCPMC3316266
OpenAlexW2148354942

What OpenQuestion holds

Textmetadata
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.