Evidence map›Paper›PMID 39215901›Full record

ArticleCardiovascular drugs and therapy2025

Low Thyroid Hormones Level Attenuates Mitochondrial Dysfunction and Right Ventricular Failure in Pulmonary Hypertensive Rats.

Natalia Soares Carvalho Souza, Thais Barenco-Marins, Ana Paula Ferraz, Raiana Andrade Quintanilha Barbosa, Leonardo Maciel, Cristiano Gonçalves Ponte, Fernando Azevedo Cruz Seara, Emerson Lopes Olivares, Jose Hamilton Matheus Nascimento

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Article in Cardiovascular drugs and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

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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

9 authors.

Natalia Soares Carvalho SouzaInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil.
Thais Barenco-MarinsInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil.
Ana Paula FerrazInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil.
Raiana Andrade Quintanilha BarbosaInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil.
Leonardo MacielCampus Professor Geraldo Cidade, Universidade Federal do Rio de Janeiro, Duque de Caxias, Brazil.
Cristiano Gonçalves PonteInstituto Federal de Educação, Ciências E Tecnologia do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Fernando Azevedo Cruz SearaInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil. searafac@biof.ufrj.br.ORCID 0000-0003-4772-5618
Emerson Lopes OlivaresInstituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil.
Jose Hamilton Matheus NascimentoInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, 373 Carlos Chagas Filho Avenue, Rio de Janeiro, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study is to investigate the repercussions of hypothyroidism in the pathophysiological progression of pulmonary arterial hypertension (PAH).

methodsWhile the control (CTL, n = 5) male Wistar rats received vehicle, PAH was induced with monocrotaline (MCT group, n = 15). Hypothyroidism was induced in a subset of rats by methimazole 3 weeks prior to the MCT injection (MMZ + MCT group, n = 15). Plasma thyroid hormones were measured by radioimmunoassay. Electrocardiographic, echocardiographic, and hemodynamic analyses were performed to evaluate the progression of PAH. Gene expression of antioxidant enzymes and cardiac hypertrophy markers were assessed by qPCR. Mitochondrial respiration, ATP levels, and ROS production were measured in right ventricular (RV) samples.

resultsPlasma T3 and T4 decreased in both MCT and MMZ + MCT groups (p < 0.05). Right ventricular systolic pressure (RVSP) increased, and RV - dP/dt, + dP/dt, and contractility index decreased in the MCT versus the CTL group and remained within control levels in the MMZ + MCT group (p < 0.05). Relative RV weight, RV wall thickness, RV diastolic area, and relative lung weight were augmented in the MCT versus the CTL group, whereas all parameters were improved to the CTL levels in the MMZ + MCT group (p < 0.05). Only the MCT group exhibited an increased duration of QTc interval compared to the baseline period (p < 0.05). ADP-induced mitochondrial respiration and ATP levels were decreased, and ROS production was increased in MCT versus the CTL group (p < 0.05), while the MMZ + MCT group exhibited increased mitochondrial respiration versus the MCT group (p < 0.05).

conclusionHypothyroidism attenuated the RV mitochondrial dysfunction and the pathophysiological progression of MCT-induced PAH.

Indexed as

Heart FailureHypertension, PulmonaryHypothyroidismMitochondria, HeartPulmonary Arterial HypertensionThyroid HormonesVentricular Dysfunction, RightVentricular Function, RightAdenosine TriphosphateAnimalsDisease Models, AnimalMaleMethimazoleMonocrotalineRatsRats, WistarAdenosine TriphosphateMethimazoleMonocrotalineReactive Oxygen SpeciesThyroid HormonesHeart failureMitochondriaPulmonary hypertensionThyroid hormones

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Registered trials

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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.