Evidence map›Paper›PMID 21791940›Full record

ArticleNeonatology2012

Optimal techniques for mRNA extraction from neonatal salivary supernatant.

Jessica A Dietz, Kirby L Johnson, Heather C Wick, Diana W Bianchi, Jill L Maron

Open access · bronzeAbstract read
In one paragraph

Article in Neonatology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

26 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Observational
  9. Observational
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Salivary FOXP2 expression and oral feeding success in premature infants.Cold Spring Harbor molecular case studies · 2016
    Article
  15. FOXP2 gene deletion and infant feeding difficulties: a case report.Cold Spring Harbor molecular case studies · 2016
    Article
  16. The Neonatal Salivary Transcriptome.Cold Spring Harbor perspectives in medicine · 2015
    Review
  17. Article
  18. Comparative performance analyses of commercially available products for salivary collection and nucleic acid processing in the newborn.Biotechnic & histochemistry : official publication of the Biological Stain Commission · 2015
    Article
  19. Article
  20. Great expectorations: the potential of salivary 'omic' approaches in neonatal intensive care.Journal of perinatology : official journal of the California Perinatal Association · 2014
    Review
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 2 institutions in 1 country.

Jessica A DietzDivision of Newborn Medicine, Department of Pediatrics, The Floating Hospital for Children at Tufts Medical Center, Medford, MA, USA.
Kirby L Johnson
Heather C Wick
Diana W Bianchi
Jill L Maron
Tufts Children's Hospital · USTufts University · US

Funding

Neonatal Salivary Genomic Profiles To Access Feeding Tolerance and DiseaseK08HD059819 · NICHD · TUFTS MEDICAL CENTER · PI MARON, JILL LAMANNA · 2009 to 2013
$617k
NICHD NIH HHS K08 HD059819NICHD NIH HHS K08HD059819-02
6 · The paper itself

Abstract

backgroundGene expression profiling of the salivary supernatant is emerging as a new and important source of real-time, systemic, biological information. However, existing technologies prevent RNA extraction of small quantities found in neonatal salivary supernatant.

objectiveThe aim of this study was to develop techniques to enhance extraction of cell-free RNA from neonatal salivary supernatant.

methodsTwo saliva samples (10-100 μl) were serially collected from newborns (36-41 weeks' gestation) (n = 13) and stabilized. Total RNA was extracted from salivary supernatant with the use of two modified extraction techniques: Qiagen RNAprotect® Saliva Mini Kit (method 1) and the QIAamp Viral RNA Mini Kit (method 2). Quantitative RT-PCR amplification for GAPDH was performed on extracted salivary samples. Statistical analyses were performed on mean threshold cycle (Ct) levels to compare RNA yield from each protocol. Paired microarray analyses were made between neonatal whole saliva and supernatant (n = 3) to discern gene expression differences between these biolayers.

resultsmRNA was successfully extracted and amplified from all salivary supernatant samples. Extraction with method 2 yielded more RNA than with method 1 (p = 0.008). There was a 7.5% discordance between paired gene expression analyses for whole saliva and supernatant. Genes that were statistically significantly upregulated in supernatant highlighted 16 distinct biological functions not seen in whole saliva. Conversely, only two biological functions were unique to whole saliva.

conclusionNeonatal cell-free salivary supernatant mRNA may be readily extracted and utilized on downstream applications. These technical enhancements allow for further exploration of the diagnostic potential of the neonatal salivary transcriptome.

Indexed as

Gene ExpressionGene Expression ProfilingGestational AgeHumansInfant, NewbornOligonucleotide Array Sequence AnalysisReproducibility of ResultsReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSalivaTranscription, GeneticRNA, Messenger

Identifiers

PMID21791940
PMCPMC3151004
OpenAlexW2084371633

What OpenQuestion holds

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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.