Evidence map›Paper›PMID 21455476›Full record

ArticleJournal of biomolecular techniques : JBT2011

Comparison of DNA extraction methods from small samples of newborn screening cards suitable for retrospective perinatal viral research.

Gai L McMichael, Amanda R Highet, Catherine S Gibson, Paul N Goldwater, Michael E O'Callaghan, Emily R Alvino, Alastair H MacLennan, South Australian Cerebral Palsy Research Group

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of biomolecular techniques : JBT, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 43% 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

3 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
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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

8 authors at 1 institution in 1 country.

Gai L McMichaelWomen’s and Children’s Hospital, Discipline of Obstetrics and Gynaecology, 1st Floor, Queen Victoria Bldg., 72 King William Rd., North Adelaide, SA 5006, Australia. gai.mcmichael@adelaide.edu.au
Amanda R Highet
Catherine S Gibson
Paul N Goldwater
Michael E O'Callaghan
Emily R Alvino
Alastair H MacLennan
South Australian Cerebral Palsy Research Group
Women's and Children's Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Reliable detection of viral DNA in stored newborn screening cards (NSC) would give important insight into possible silent infection during pregnancy and around birth. We sought a DNA extraction method with sufficient sensitivity to detect low copy numbers of viral DNA from small punch samples of NSC. Blank NSC were spotted with seronegative EDTA-blood and seropositive EBV EDTA-blood. DNA was extracted with commercial and noncommercial DNA extraction methods and quantified on a spectrofluorometer using a PicoGreen dsDNA quantification kit. Serial dilutions of purified viral DNA controls determined the sensitivity of the amplification protocol, and seropositive EBV EDTA-blood amplified by nested PCR (nPCR) validated the DNA extraction methods. There were considerable differences between the commercial and noncommercial DNA extraction methods (P=0.014; P=0.016). Commercial kits compared favorably, but the QIamp DNA micro kit with an added forensic filter step was marginally more sensitive. The mean DNA yield from this method was 3 ng/μl. The limit of detection was 10 viral genome copies in a 50-μl reaction. EBV nPCR detection in neat and 1:10 diluted DNA extracts could be replicated reliably. We conclude that the QIamp Micro DNA extraction method with the added forensic spin-filter step was suitable for retrospective DNA viral assays from NSC.

Indexed as

Analysis of VarianceAnalytic Sample Preparation MethodsBlood Specimen CollectionCytomegalovirusCytomegalovirus InfectionsDNA, ViralFemaleHerpesvirus 4, HumanHumansInfant, NewbornNeonatal ScreeningPolymerase Chain ReactionPregnancyPregnancy Complications, InfectiousRetrospective StudiesSensitivity and SpecificityDNA, Viralcytomegalovirusdried blood spotsnPCR

Identifiers

PMID21455476
PMCPMC3059536
OpenAlexW1585646133

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.