Evidence map›Paper›PMID 21084260›Full record

ArticleCancer prevention research (Philadelphia, Pa.)2010

Neonatal experiences differentially influence mammary gland morphology, estrogen receptor {α} protein levels, and carcinogenesis in BALB/c mice.

Allison L Boyd, Ayesha Salleh, Brent Humber, Janet Yee, Ladislav Tomes, Leslie R Kerr

Abstract read
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In one paragraph

Article in Cancer prevention research (Philadelphia, Pa.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 17% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
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  8. Molecular pathways: beta-adrenergic signaling in cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2012
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Allison L BoydTrent University, Peterborough, Ontario, Canada.
Ayesha Salleh
Brent Humber
Janet Yee
Ladislav Tomes
Leslie R Kerr
Trent University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Prevention of breast cancer can be achieved with a better understanding of the factors contributing to normal breast development. Because the breast develops postnatally, alterations in the development and lifetime activity of the neuroendocrine system may set up an environment that increases cancer risk. The present study examined how two neonatal experiences over the first 3 weeks of life influence normal and malignant mammary gland development in female BALB/c mice. Following puberty, both brief (15 minutes) and prolonged (4 hours) daily maternal separations of newborn mice accelerated mammary gland development relative to nonseparated mice. Despite similar mammary gland morphologies between mice exposed to these two neonatal separation experiences, only mice exposed to prolonged maternal separation bouts showed a higher incidence and faster onset of mammary tumorigenesis following adulthood carcinogen [7,12-dimethylbenz(a)anthracene] administration. Molecular analysis of estrogen receptor α (ERα) and p53, two proteins that have been implicated in breast cancer, revealed that for mice exposed to prolonged neonatal maternal separation bouts, mammary gland ERα protein levels were upregulated in a transcription-independent manner. On the other hand, p53 expression in mammary glands of adult mice was not differentially influenced by neonatal experiences. Our findings show that chronic, moderate psychosocial stress during the neonatal period increases the expression of ERα protein and promotes mammary tumorigenesis in adulthood.

Indexed as

9,10-Dimethyl-1,2-benzanthraceneAnimalsAnimals, NewbornBlotting, WesternCarcinogensEstrogen Receptor alphaFemaleImmunohistochemistryMammary Glands, AnimalMammary Neoplasms, ExperimentalMaternal DeprivationMiceMice, Inbred BALB CReverse Transcriptase Polymerase Chain ReactionStress, Psychological9,10-Dimethyl-1,2-benzanthraceneCarcinogensEstrogen Receptor alpha

Identifiers

PMID21084260
OpenAlexW2166812695

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.