Evidence map›Paper›PMID 22436421›Full record

ArticleBMC cancer2012

Differential expression of cancer associated proteins in breast milk based on age at first full term pregnancy.

Wenyi Qin, Ke Zhang, Beth Kliethermes, Rachel L Ruhlen, Eva P Browne, Kathleen F Arcaro, Edward R Sauter

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 16% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. The utility of breastmilk for genetic or genomic studies: a systematic review.Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine · 2013
    Pooled it
  2. Review
  3. Article
  4. Article
  5. Novel Biomolecules in the Pathogenesis of Gestational Diabetes Mellitus.International journal of molecular sciences · 2021
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Temporal trends in the inflammatory cytokine profile of human breastmilk.Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine · 2014
    Article
  13. 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

7 authors at 3 institutions in 1 country.

Wenyi QinDepartment of Surgery, University of North Dakota School of Medicine and Health Sciences, 501 N. Columbia Rd,, Grand Forks, ND 58202, USA.
Ke Zhang
Beth Kliethermes
Rachel L Ruhlen
Eva P Browne
Kathleen F Arcaro
Edward R Sauter
University of North Dakota · USUniversity of Massachusetts Amherst · USA.T. Still University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFirst full term pregnancy (FFTP) completed at a young age has been linked to low long term breast cancer risk, whereas late FFTP pregnancy age confers high long term risk, compared to nulliparity. Our hypothesis was that proteins linked to breast cancer would be differentially expressed in human milk collected at three time points during lactation based on age at FFTP.

methodsWe analyzed breast milk from 72 lactating women. Samples were collected within 10 days of the onset of lactation (baseline-BL), two months after lactation started and during breast weaning (W). We measured 16 proteins (11 kallikreins (KLKs), basic fibroblast growth factor, YKL-40, neutrophil gelatinase-associated lipocalin and transforming growth factor (TGF) β-1 and -2) associated with breast cancer, most known to be secreted into milk.

resultsDuring lactation there was a significant change in the expression of 14 proteins in women < 26 years old and 9 proteins in women > = 26 at FFTP. The most significant (p < .001) changes from BL to W in women divided by FFTP age (< 26 vs. > = 26) were in KLK3,6, 8, and TGFβ2 in women < 26; and KLK6, 8, and TGFβ2 in women > = 26. There was a significant increase (p = .022) in KLK8 expression from BL to W depending on FFTP age. Examination of DNA methylation in the promoter region of KLK6 revealed high levels of methylation that did not explain the observed changes in protein levels. On the other hand, KLK6 and TGFβ1 expression were significantly associated (r2 = .43, p = .0050).

conclusionsThe expression profile of milk proteins linked to breast cancer is influenced by age at FFTP. These proteins may play a role in future cancer risk.

Indexed as

GravidityAdultAge FactorsBreast NeoplasmsDNA MethylationFemaleGene Expression RegulationHumansKallikreinsLactationMilk, HumanMilk ProteinsNeoplasm ProteinsPregnancyTransforming Growth Factor beta1Young AdultKallikreinsKLK6 protein, humanMilk ProteinsNeoplasm ProteinsTransforming Growth Factor beta1

Identifiers

PMID22436421
PMCPMC3412716
OpenAlexW2143646930

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.