Evidence map›Paper›PMID 32251501›Full record

ArticleCardiovascular research2021

Ryanodine receptor subtypes regulate Ca2+ sparks/spontaneous transient outward currents and myogenic tone of uterine arteries in pregnancy.

Rui Song, Xiang-Qun Hu, Monica Romero, Mark A Holguin, Whitney Kagabo, Daliao Xiao, Sean M Wilson, Lubo Zhang

Open access · greenAbstract read
In one paragraph

Article in Cardiovascular research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 31% 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, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Guidelines for assessing maternal cardiovascular physiology during pregnancy and postpartum.American journal of physiology. Heart and circulatory physiology · 2024
    Guideline
  2. Article
  3. Article
  4. Review
  5. The uteroplacental circulation at high altitude: adaptation and maladaptation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  6. Rad-mediated inhibition of CaThe Journal of physiology · 2024
    Article
  7. Article
  8. Review
  9. CaInternational journal of molecular sciences · 2023
    Review
  10. Article
  11. Review
  12. Article
  13. Review
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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

8 authors at 1 institution in 1 country.

Rui SongLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Xiang-Qun HuLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Monica RomeroLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Mark A HolguinLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Whitney KagaboLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Daliao XiaoLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Sean M WilsonLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Lubo ZhangLawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA.
Loma Linda University · US

Funding

Uterine Vascular Adaptation to Pregnancy and Chronic HypoxiaP01HD083132 · NICHD · LOMA LINDA UNIVERSITY · PI DUCSAY, CHARLES A · 2016 to 2020
$6.3M
Gestational Hypoxia and Programming of Maternal, Fetal and Newborn Vascular FunctionR01HL149608 · NHLBI · LOMA LINDA UNIVERSITY · PI PEARCE, WILLIAM J., WILSON, SEAN M · 2020 to 2023
$3.1M
Epigenetic mechanisms of uterine vascular adaptation to pregnancy and hypoxiaR01HL128209 · NHLBI · LOMA LINDA UNIVERSITY · PI ZHANG, LUBO · 2015 to 2018
$1.6M
Uterine Arterial Spontaneous Transient Outward Currents in PregnancyR01HL137649 · NHLBI · LOMA LINDA UNIVERSITY · PI ZHANG, LUBO · 2017 to 2020
$1.6M
NHLBI NIH HHS R01 HL128209NHLBI NIH HHS R01 HL137649NHLBI NIH HHS R01 HL149608NICHD NIH HHS P01 HD083132
6 · The paper itself

Abstract

aimsOur recent study demonstrated that increased Ca2+ sparks and spontaneous transient outward currents (STOCs) played an important role in uterine vascular tone and haemodynamic adaptation to pregnancy. The present study examined the role of ryanodine receptor (RyR) subtypes in regulating Ca2+ sparks/STOCs and myogenic tone in uterine arterial adaptation to pregnancy. METHODS AND

resultsUterine arteries isolated from non-pregnant and near-term pregnant sheep were used in the present study. Pregnancy increased the association of α and β1 subunits of large-conductance Ca2+-activated K+ (BKCa) channels and enhanced the co-localization of RyR1 and RyR2 with the β1 subunit in the uterine artery. In contrast, RyR3 was not co-localized with BKCa β1 subunit. Knockdown of RyR1 or RyR2 in uterine arteries of pregnant sheep downregulated the β1 but not α subunit of the BKCa channel and decreased the association of α and β1 subunits. Unlike RyR1 and RyR2, knockdown of RyR3 had no significant effect on either expression or association of BKCa subunits. In addition, knockdown of RyR1 or RyR2 significantly decreased Ca2+ spark frequency, suppressed STOCs frequency and amplitude, and increased pressure-dependent myogenic tone in uterine arteries of pregnant animals. RyR3 knockdown did not affect Ca2+ sparks/STOCs and myogenic tone in the uterine artery.

conclusionTogether, the present study demonstrates a novel mechanistic paradigm of RyR subtypes in the regulation of Ca2+ sparks/STOCs and uterine vascular tone, providing new insights into the mechanisms underlying uterine vascular adaptation to pregnancy.

Indexed as

Calcium SignalingVasoconstrictionAdaptation, PhysiologicalAnimalsArterial PressureCalciumFemaleGene Expression RegulationLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsLarge-Conductance Calcium-Activated Potassium Channel beta SubunitsPregnancyRyanodine Receptor Calcium Release ChannelSheep, DomesticTissue Culture TechniquesUterine ArteryCalciumLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsLarge-Conductance Calcium-Activated Potassium Channel beta SubunitsRyanodine Receptor Calcium Release ChannelCa2+ sparkschannelLarge-conductance Ca2+-activated K+Myogenic tonePregnancyRyanodine receptorSpontaneous transient outward currentsUterine arteries

Identifiers

PMID32251501
PMCPMC7898951
OpenAlexW3014512422

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.