Evidence map›Paper›PMID 26010093›Full record

ArticlePloS one2015

Sex Hormones Promote Opposite Effects on ACE and ACE2 Activity, Hypertrophy and Cardiac Contractility in Spontaneously Hypertensive Rats.

P L M Dalpiaz, A Z Lamas, I F Caliman, E H Ribeiro, G R Abreu, M R Moyses, T U Andrade, S A Gouvea, M F Alves, A K Carmona and 1 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

79 citing papers in PubMed, 136 citations in OpenAlex.

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  13. Vitamin D-A prominent immunomodulator to prevent COVID-19 infection.International journal of rheumatic diseases · 2023
    Review
  14. Article
  15. Article
  16. The sex and gender dimensions of COVID-19: A narrative review of the potential underlying factors.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2022
    Review
  17. Review
  18. Review
  19. Review
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19 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 1 country.

P L M DalpiazDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
A Z LamasDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
I F CalimanDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
E H RibeiroDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
G R AbreuDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
M R MoysesDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
T U AndradeDepartment of Pharmacy, University Vila Velha, Vila Velha, Espirito Santo, Brazil.
S A GouveaNucleus of Biotechnology, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
M F AlvesDepartment of Biophysics, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, Brazil.
A K CarmonaDepartment of Biophysics, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, Brazil.
N S BissoliDepartment of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
Universidade Federal do Espírito Santo · BRUniversidade Federal de São Paulo · BRUniversidade Vila Velha · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is growing interest in sex differences and RAS components. However, whether gender influences cardiac angiotensin I-converting enzyme (ACE) and angiotensin-converting enzyme 2 (ACE2) activity is still unknown. In the present work, we determined the relationship between ACE and ACE2 activity, left ventricular function and gender in spontaneously hypertensive rats (SHRs). METHODOLOGY/PRINCIPAL

findingsTwelve-week-old female (F) and male (M) SHRs were divided into 2 experimental groups (n = 7 in each group): sham (S) and gonadectomized (G). Fifty days after gonadectomy, we measured positive and negative first derivatives (dP/dt maximum left ventricle (LV) and dP/dt minimum LV, respectively), hypertrophy (morphometric analysis) and ACE and ACE2 catalytic activity (fluorimetrically). Expression of calcium handling proteins was measured by western blot. Male rats exhibited higher cardiac ACE and ACE2 activity as well as hypertrophy compared to female rats. Orchiectomy decreased the activity of these enzymes and hypertrophy, while ovariectomy increased hypertrophy and ACE2, but did not change ACE activity. For cardiac function, the male sham group had a lower +dP/dt than the female sham group. After gonadectomy, the +dP/dt increased in males and reduced in females. The male sham group had a lower -dP/dt than the female group. After gonadectomy, the -dP/dt increased in the male and decreased in the female groups when compared to the sham group. No difference was observed among the groups in SERCA2a protein expression. Gonadectomy increased protein expression of PLB (phospholamban) and the PLB to SERCA2a ratio in female rats, but did not change in male rats.

conclusionOvariectomy leads to increased cardiac hypertrophy, ACE2 activity, PLB expression and PLB to SERCA2a ratio, and worsening of hemodynamic variables, whereas in males the removal of testosterone has the opposite effects on RAS components.

Indexed as

Angiotensin-Converting Enzyme 2AnimalsBlood PressureBlotting, WesternBody WeightCardiomegalyDensitometryFemaleGonadal Steroid HormonesGonadsHeart VentriclesHemodynamicsHypertensionMaleMyocardial ContractionOrgan SizeAce2 protein, ratAngiotensin-Converting Enzyme 2Gonadal Steroid HormonesPeptidyl-Dipeptidase A

Identifiers

PMID26010093
PMCPMC4444272
OpenAlexW1514902666

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.