Evidence map›Paper›PMID 31924794›Full record

ArticleScientific reports2020

DNA extraction approaches substantially influence the assessment of the human breast milk microbiome.

Chloe A Douglas, Kerry L Ivey, Lito E Papanicolas, Karen P Best, Beverly S Muhlhausler, Geraint B Rogers

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

58 citing papers in PubMed, 91 citations in OpenAlex.

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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

6 authors at 4 institutions in 2 countries.

Chloe A DouglasSouth Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia.ORCID http://orcid.org/0000-0003-2570-789X
Kerry L IveySouth Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia.
Lito E PapanicolasSouth Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia.
Karen P BestSouth Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia.ORCID http://orcid.org/0000-0002-7653-5074
Beverly S MuhlhauslerSouth Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia.
Geraint B RogersSouth Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia. geraint.rogers@sahmri.com.
Women's and Children's Hospital · AUFlinders University · AUHarvard University · USSouth Australian Health and Medical Research Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In addition to providing nutritional and bioactive factors necessary for infant development, human breast milk contains bacteria that contribute to the establishment of commensal microbiota in the infant. However, the composition of this bacterial community differs considerably between studies. We hypothesised that bacterial DNA extraction methodology from breast milk samples are a substantial contributor to these inter-study differences. We tested this hypothesis by applying five widely employed methodologies to a mock breast milk sample and four individual human breast milk samples. Significant differences in DNA yield and purity were observed between methods (P < 0.05). Microbiota composition, assessed by 16S rRNA gene amplicon sequencing, also differed significantly with extraction methodology (P < 0.05), including in the contribution of contaminant signal. Concerningly, many of the bacterial taxa identified here as contaminants have been reported as components of the breast milk microbiome in other studies. These findings highlight the importance of using stringent, well-validated, DNA extraction methodologies for analysis of the breast milk microbiome, and exercising caution interpreting microbiota data from low-biomass contexts.

Indexed as

MicrobiotaChemical FractionationDNA, BacterialHumansMilk, HumanSequence Analysis, DNADNA, Bacterial

Identifiers

PMID31924794
PMCPMC6954186
OpenAlexW2999205737

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.