Evidence map›Paper›PMID 26377917›Full record

ArticleBMC research notes2015

Placental mitochondrial DNA content and placental abruption: a pilot study.

Chunfang Qiu, Sixto E Sanchez, Karin Hevner, Daniel A Enquobahrie, Michelle A Williams

Open access · goldAbstract read
In one paragraph

Article in BMC research notes, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

4 citing papers in PubMed, 14 citations in OpenAlex.

  1. Review
  2. Article
  3. Genetic variations related to maternal whole blood mitochondrial DNA copy number: a genome-wide and candidate gene study.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 · 2017
    Article
  4. 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

5 authors at 1 institution in 1 country.

Chunfang QiuCenter for Perinatal Studies, Swedish Medical Center, Seattle, WA, USA. Chun-fang.Qiu@Swedish.org.
Sixto E SanchezSección de Post Grado, Facultad de Medicina Humana, Universidad San Martín de Porres, Lima, Peru. sixtosan@yahoo.com.
Karin HevnerCenter for Perinatal Studies, Swedish Medical Center, Seattle, WA, USA. Karin.Hevner@Swedish.org.
Daniel A EnquobahrieCenter for Perinatal Studies, Swedish Medical Center, Seattle, WA, USA. danenq@u.washington.edu.
Michelle A WilliamsDepartment of Epidemiology, Harvard School of Public Health, Boston, MA, USA. mawilliams@hsph.harvard.edu.
Swedish Medical Center · US

Funding

Triggers of Abruptio Placentae - A Case Crossover Study of an Ischemic PlacentalR01HD059827 · NICHD · SWEDISH MEDICAL CENTER, FIRST HILL · PI ANANTH, CANDE V., WILLIAMS, MICHELLE A. · 2010 to 2014
$2.7M
NICHD NIH HHS 5 R01-HD059827NICHD NIH HHS R01 HD059827
6 · The paper itself

Abstract

backgroundMitochondrial biogenesis and adequate energy production are important for embryogenesis and placentation. Previous studies documented alterations in maternal blood mitochondrial DNA (mtDNA) copy number-a marker of mitochondrial dysfunction-in pregnancies complicated by placental abruption. To further understand the role of mitochondrial dysfunction in the pathogenesis of placental abruption, we conducted a pilot study using placental specimen collected from 103 placental abruption cases and 102 non-abruption controls. Real-time quantitative polymerase chain reaction (PCR) was used to assess the relative copy number of mtDNA in DNA extracted from placental samples collected immediately after delivery. Logistic regression procedures were used to estimate adjusted odds ratios (OR) and 95% confidence intervals (CI).

resultsHigher odds of placental abruption was observed with increasing mtDNA copy number (p value for trend = 0.05). The odds of placental abruption was elevated among women who delivered placentas with higher mtDNA copy number (≥120.5, the median) as compared with those with lower values (<120.5) (adjusted OR = 2.38; 95% CI 1.11-5.08).

conclusionWe found preliminary evidence for associations of target tissue-specific mitochondrial dysfunction with an adverse perinatal outcome, placental abruption. Larger studies and replication of findings in other populations will further our understanding of relationships between cellular and genomic biomarkers of normal and abnormal placental function and vascular placental disorders.

Indexed as

Abruptio PlacentaeAdultCase-Control StudiesDNA, MitochondrialFemaleHumansOdds RatioPilot ProjectsPlacentaPregnancyYoung AdultDNA, Mitochondrial

Identifiers

PMID26377917
PMCPMC4571073
OpenAlexW2102412106

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.