Evidence map›Paper›PMID 26400187›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2015

Placental ischemia-induced increases in brain water content and cerebrovascular permeability: role of TNF-α.

Junie P Warrington, Heather A Drummond, Joey P Granger, Michael J Ryan

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 9% 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

39 citing papers in PubMed, 2 syntheses or guidelines pooled it, 64 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. Pooled it
  3. Article
  4. Frontiers in physiology · 2026
    Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. The Placental Function Beyond Pregnancy: Insights from Latin America.Advances in experimental medicine and biology · 2023
    Review
  12. Article
  13. Reliability of Rodent and Rabbit Models in Preeclampsia Research.International journal of molecular sciences · 2022
    Review
  14. Review
  15. The Impact of Sex and Gender on Stroke.Circulation research · 2022
    Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article
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 2 institutions in 1 country.

Junie P WarringtonDepartment of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.
Heather A DrummondDepartment of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.
Joey P GrangerDepartment of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.
Michael J RyanDepartment of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi mjryan@umc.edu.
Jackson Memorial Hospital · USUniversity 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
The role of leptin in autoimmune-associated hypertensionP20GM104357 · NIGMS · UNIVERSITY OF MISSISSIPPI MED CTR · PI TAYLOR, ERIN BASSFORD · 2013 to 2022
$23.4M
Hypertension, Kidney and PregnancyR01HL108618 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI GRANGER, JOEY P. · 2011 to 2015
$1.8M
VASA RECTA HEMODYNAMICS IN GENETIC HYPERTENSIONR01HL036279 · NHLBI · MEDICAL COLLEGE OF WISCONSIN · PI ROMAN, RICHARD J. · 1986 to 2004
$1.3M
NHLBI NIH HHS P01 HL051971NHLBI NIH HHS P01HL-051971NHLBI NIH HHS R01 HL108618NHLBI NIH HHS R01HL-108618NHLBI NIH HHS R01HL-36279NIGMS NIH HHS P20 GM104357NIGMS NIH HHS P20GM-104357
6 · The paper itself

Abstract

Cerebrovascular complications and increased risk of encephalopathies are characteristic of preeclampsia and contribute to 40% of preeclampsia/eclampsia-related deaths. Circulating tumor necrosis factor-α (TNF-α) is elevated in preeclamptic women, and infusion of TNF-α into pregnant rats mimics characteristics of preeclampsia. While this suggests that TNF-α has a mechanistic role to promote preeclampsia, the impact of TNF-α on the cerebral vasculature during pregnancy remains unclear. We tested the hypothesis that TNF-α contributes to cerebrovascular abnormalities during placental ischemia by first infusing TNF-α in pregnant rats (200 ng/day ip, from gestational day 14 to 19) at levels to mimic those reported in preeclamptic women. TNF-α increased mean arterial pressure (MAP, P < 0.05) and brain water content in the anterior cerebrum (P < 0.05); however, TNF-α infusion had no effect on blood-brain barrier (BBB) permeability in the anterior cerebrum or posterior cerebrum. We then assessed the role of endogenous TNF-α in mediating these abnormalities in a model of placental ischemia induced by reducing uterine perfusion pressure followed by treatment with the soluble TNF-α receptor (etanercept, 0.8 mg/kg sc) on gestational day 18. Etanercept reduced placental ischemia-mediated increases in MAP, anterior brain water content (P < 0.05), and BBB permeability (202 ± 44% in placental ischemic rats to 101 ± 28% of normal pregnant rats). Our results indicate that TNF-α mechanistically contributes to cerebral edema by increasing BBB permeability and is an underlying factor in the development of cerebrovascular abnormalities associated with preeclampsia complicated by placental ischemia.

Indexed as

Capillary PermeabilityAnimalsBlood PressureBody WaterBrainBrain EdemaCerebrovascular DisordersDisease Models, AnimalEtanerceptFemaleGestational AgeIschemiaPlacentaPre-EclampsiaPregnancyRats, Sprague-DawleyEtanerceptTumor Necrosis Factor-alphaBBB permeabilitycerebrovascular abnormalitiesedemapreeclampsiapregnancy

Identifiers

PMID26400187
PMCPMC4698405
OpenAlexW2209708914

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.