Evidence map›Paper›PMID 19075097›Full record

ArticleHypertension (Dallas, Tex. : 1979)2009

Hypertension produced by placental ischemia in pregnant rats is associated with increased soluble endoglin expression.

Jeffrey S Gilbert, Sara A B Gilbert, Marietta Arany, Joey P Granger

Open access · bronzeAbstract read
In one paragraph

Article in Hypertension (Dallas, Tex. : 1979), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed, 1 pooled it
9.9field-weighted citation impact, top 2% 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

89 citing papers in PubMed, 1 synthesis or guideline pooled it, 138 citations in OpenAlex.

  1. Pooled it
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  8. Reversal of maternal obesity attenuates hypoxia and improves placental development in the preeclamptic-like BPH/5 mouse model.Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al · 2023
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  13. Hypertensive disorders of pregnancy: definition, management, and out-of-office blood pressure measurement.Hypertension research : official journal of the Japanese Society of Hypertension · 2022
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  16. Maternal circulating concentrations of soluble Fas and Elabela in early- and late-onset preeclampsia.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2022
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29 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Jeffrey S GilbertDepartment of Physiology, University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216-4505, USA.
Sara A B Gilbert
Marietta Arany
Joey P Granger
University of Mississippi Medical Center · US

Funding

STRUCTURAL VASCULAR ADAPTATION OF THE MICROCIRCULATIONP01HL051971 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI HALL, JOHN E · 1993 to 2018
$39.4M
ABNORMAL PRESSURE NATRIURESIS IN HYPERTENSIONR01HL038499 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI GRANGER, JOEY P. · 1989 to 2009
$1.4M
Renal and Cardiovascular Dysfunction in Hypertension and PregnancyF32HL090269 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI GILBERT, JEFFREY S · 2007 to 2007
$44k
NHLBI NIH HHS F32 HL090269NHLBI NIH HHS HL51971NHLBI NIH HHS HL90269NHLBI NIH HHS P01 HL051971NHLBI NIH HHS R01 HL038499
6 · The paper itself

Abstract

Recent clinical studies indicate that an excess of angiostatic factors, such as soluble endoglin (sEng), is related to the occurrence of preeclampsia. Although recent clinical studies report that sEng is increased in preeclamptic women, the mechanisms underlying its overexpression remain unclear. Evidence suggests that hypoxia and induction of heme oxygenase-1 have opposing effects on sEng expression, the former stimulatory and the latter inhibitory. Hence, we hypothesized that placental ischemia because of reduced uterine perfusion pressure (RUPP) in the pregnant rat would increase sEng expression and decrease heme oxygenase-1. Mean arterial pressure was obtained via arterial catheter, and serum and placental proteins were measured by Western blot. Mean arterial pressure was increased (132+/-3 mm Hg versus 102+/-2 mm Hg; P<0.001), and fetal (2.35+/-0.05 g versus 1.76+/-0.08 g; P<0.001) and placental weight were decreased (0.47+/-0.04 g versus 0.58+/-0.03 g; P<0.01) in the RUPP compared with normal pregnant controls. Serum sEng (0.10+/-0.02 arbitrary pixel units [apu] versus 0.05+/-0.01 apu; P<0.05) and placental endoglin (4.7+/-2.3 apu versus 1.45+/-0.42 apu; P<0.05) were increased along with placental hypoxia inducible factor-1 alpha (1.42+/-0.25 apu versus 0.68+/-0.09 apu; P<0.05) expression in the RUPP versus the normal pregnant dams. Placental HO-1 (1.4+/-0.3 apu versus 2.5+/-0.1 apu; P<0.05) expression decreased in the RUPP compared with normal pregnant dams. The present findings support our hypothesis that placental ischemia because of RUPP increases the expression of sEng and shifts the balance of angiogenic factors in the maternal circulation toward an angiostatic state. The present study provides further evidence that placental ischemia is a strong in vivo stimulus of angiostatic factors during pregnancy.

Indexed as

AnimalsBlood PressureDisease Models, AnimalEndoglinFemaleHeme Oxygenase-1HypertensionHypoxia-Inducible Factor 1, alpha SubunitIntracellular Signaling Peptides and ProteinsIschemiaPlacentaPre-EclampsiaPregnancyPregnancy, AnimalRatsRats, Sprague-DawleyEndoglinEng protein, ratHeme Oxygenase-1Hif1a protein, ratHypoxia-Inducible Factor 1, alpha SubunitIntracellular Signaling Peptides and Proteins

Identifiers

PMID19075097
PMCPMC2692089
OpenAlexW2047852779

What OpenQuestion holds

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Read underepoch 390

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.