Evidence map›Paper›PMID 34600915›Full record

ArticleBiochemical pharmacology2021

TNFα blockade reverses vascular and uteroplacental matrix metalloproteinases imbalance and collagen accumulation in hypertensive pregnant rats.

Zongli Ren, Ning Cui, Minglin Zhu, Raouf A Khalil

Open access · greenAbstract read
In one paragraph

Article in Biochemical pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 25% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
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  6. 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

4 authors at 1 institution in 1 country.

Zongli RenVascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
Ning CuiVascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
Minglin ZhuVascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
Raouf A KhalilVascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA. Electronic address: raouf_khalil@hms.harvard.edu.
Brigham and Women's Hospital · US

Funding

Vascular Mechanisms in Pregnancy-Induced HypertensionR01HL065998 · NHLBI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI KHALIL, RAOUF A · 2002 to 2016
$4.3M
Vascular Mechanisms of Hypertension-in-PregnancyR01HL147889 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI KHALIL, RAOUF A · 2020 to 2022
$2.2M
Vascular Mechanisms of Hypertension-in-PregnancyR56HL147889 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI KHALIL, RAOUF A · 2019 to 2019
$647k
Mechano-Sensitive Hypoxia-Inducible Factor-MMP Pathway in Venous InsufficiencyR21HL111775 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI KHALIL, RAOUF A · 2013 to 2014
$475k
NHLBI NIH HHS R01 HL065998NHLBI NIH HHS R01 HL147889NHLBI NIH HHS R21 HL111775NHLBI NIH HHS R56 HL147889
6 · The paper itself

Abstract

Preeclampsia is a pregnancy-related disorder of maternal hypertension-in-pregnancy (HTN-Preg) and often fetal growth restriction (FGR). Placental ischemia could be an initiating event leading to inadequate vascular and uteroplacental remodeling and HTN-Preg; however, the molecular targets are unclear. To test the hypothesis that placental ischemia-induced release of proinflammatory cytokines target vascular and uteroplacental matrix metalloproteinases (MMPs), we tested if infusing TNFα (200 ng/kg/day) in day-14 pregnant (Preg) rats causes MMP imbalance and collagen accumulation, and if infusing TNFα decoy receptor Etanercept (0.4 mg/kg/day) in HTN-Preg rats with reduced uteroplacental perfusion pressure (RUPP) reverses MMP imbalance and collagen accumulation. On gestational day-19, blood pressure (BP) was higher in Preg + TNFα and RUPP vs Preg rats, and restored in RUPP + Etanercept rats. Gelatin zymography and Western blots revealed decreases in MMP-2 and MMP-9 and increases in MMP-1 and MMP-7 in aorta, uterus and placenta of Preg + TNFα and RUPP, that were reversed in RUPP + Etanercept rats. Collagen-I and IV were abundant in Preg + TNFα and RUPP, and were decreased in RUPP + Etanercept rats. The litter size, uterine, placenta, and pup weight were markedly reduced in RUPP, insignificantly reduced in Preg + TNFα, and slightly improved in RUPP + Etanercept rats. Thus TNFα blockade reverses the decreases in vascular and uteroplacental MMP-2 and MMP-9, and the increases in MMP-1, MMP-7 and accumulation of collagen-I and IV induced by placental ischemia and TNFα in HTN-Preg rats. Targeting TNFα using cytokine antagonists, or MMPs using MMP modulators could rectify MMP imbalance and collagen accumulation, restore vascular and uteroplacental remodeling, and improve BP in HTN-Preg and preeclampsia.

Indexed as

AnimalsEtanerceptFemaleGene Expression Regulation, EnzymologicHypertensionLitter SizeMatrix MetalloproteinasesPlacentaPlacental CirculationPregnancyRatsRats, Sprague-DawleyTumor Necrosis Factor-alphaUterusEtanerceptMatrix MetalloproteinasesTumor Necrosis Factor-alphaAortaHypertensionPlacentaPreeclampsiaRemodelingUterus

Identifiers

PMID34600915
PMCPMC8606001
OpenAlexW3203392105

What OpenQuestion holds

Textmetadata
LicenceTDM
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.