Evidence map›Paper›PMID 29185370›Full record

ArticleJournal of immunotoxicology2017

Effect of nicotine on placental ischemia-induced complement activation and hypertension in the rat.

Connor F Laule, Cameron R Wing, Evan J Odean, Jacob A Wilcox, Jeffrey S Gilbert, Jean F Regal

Open access · goldAbstract read
In one paragraph

Article in Journal of immunotoxicology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. The Association of Familial Hypertension and Risk of Gestational Hypertension and Preeclampsia.International journal of environmental research and public health · 2021
    Article
  8. Article
  9. Article
  10. Article
  11. 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

6 authors at 1 institution in 1 country.

Connor F Laulea Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
Cameron R Winga Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
Evan J Odeana Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
Jacob A Wilcoxa Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
Jeffrey S Gilberta Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
Jean F Regala Department of Biomedical Sciences , University of Minnesota, Medical School , Duluth , MN , USA.
University of Minnesota, Duluth · US

Funding

Complement Activation in Pregnancy and HypertensionR15HL109843 · NHLBI · UNIVERSITY OF MINNESOTA DULUTH · PI REGAL, JEAN F. · 2011 to 2015
$1.3M
NHLBI NIH HHS R15 HL109843
6 · The paper itself

Abstract

Preeclampsia is a pregnancy-specific condition manifested by new-onset maternal hypertension with systemic inflammation, including increased innate immune system complement activation. While exact pathophysiology is unknown, evidence suggests that inadequate spiral artery invasion and resulting utero-placental insufficiency is the initiating event. Cigarette smoking during pregnancy decreases the risk of preeclampsia. Nicotine, a major component of cigarettes, stimulates the efferent cholinergic anti-inflammatory pathway through peripherally expressed nicotinic acetylcholine receptors (nAChR) and is known to attenuate ischemia-reperfusion injury in kidney and liver. Prior studies indicated that complement activation was critical for placental ischemia-induced hypertension in a rat model. Thus, it was hypothesized here that nicotine was responsible for the protective effect of cigarette smoking in preeclampsia and would attenuate placental ischemia-induced systemic complement activation and hypertension. The Reduced Utero-placental Perfusion Pressure (RUPP) model in the pregnant rat was employed to induce placental ischemia, resulting in complement activation, fetal resorptions, and hypertension. On gestation day (GD)14, nicotine (1 mg/kg) or saline was administered via subcutaneous injection prior to RUPP surgery and daily through GD18. On GD19, placental ischemia significantly increased mean arterial pressure (MAP) in saline injected animals. However, the placental ischemia-induced increase in blood pressure was not evident in nicotine-treated animals and nicotine treatment significantly increased MAP variability. Circulating C3a was measured as an indicator of complement activation and increased C3a in RUPP compared to Sham persisted with nicotine treatment, as did fetal resorptions. These data suggested to us that nicotine may contribute to the decreased risk of preeclampsia with cigarette smoking, but this protective effect was confounded by additional effects of nicotine on the cardiovascular system.

Indexed as

AnimalsCigarette SmokingComplement ActivationComplement C3FemaleFetal ResorptionHumansHypertensionImmunity, InnateIschemiaNicotinePlacentaPre-EclampsiaPregnancyRatsRats, Sprague-DawleyComplement C3NicotineReceptors, Nicotiniccomplementgestational hypertensionhypertensionnicotineplacental ischemiaPreeclampsiasmoking

Identifiers

PMID29185370
PMCPMC6298215
OpenAlexW2770836971

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.