Evidence map›Paper›PMID 20347606›Full record

ArticleGrowth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society2010

Insulin-like growth factors I and II receptors in the breast cancer survival disparity among African-American women.

S Kalla Singh, Q W Tan, C Brito, M De León, D De León

Erratum issuedOpen access · greenAbstract readComparative Study
In one paragraph

Article in Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.5field-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

23 citing papers in PubMed, 32 citations in OpenAlex.

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  19. Risk of breast cancer recurrence associated with carbohydrate intake and tissue expression of IGFI receptor.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2014
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

S Kalla SinghCenter for Health Disparities and Molecular Medicine, Loma Linda University, Loma Linda, CA 92350, USA.
Q W Tan
C Brito
M De León
D De León
Loma Linda University · US

Funding

NIH-LLU Initiative for Maximizing Student DiversityR25GM060507 · NIGMS · LOMA LINDA UNIVERSITY · PI DE LEON, MARINO · 2001 to 2022
$11.3M
The role of imidazoline receptor in type-2 diabetesP20MD001632 · NIMHD · LOMA LINDA UNIVERSITY · PI DE LEON, DAISY D. · 2005 to 2009
$8.0M
Research Training/Education CoreP20MD006988 · NIMHD · LOMA LINDA UNIVERSITY · PI DE LEON, MARINO · 2012 to 2016
$6.2M
NIGMS NIH HHS 5R25GM060507NIGMS NIH HHS R25 GM060507NIMHD NIH HHS 5P20 MD001632NIMHD NIH HHS P20 MD001632NIMHD NIH HHS P20 MD006988
6 · The paper itself

Abstract

objectiveAfrican-American (AA) women with breast cancer are more likely to have advanced disease at diagnosis, higher risk of recurrence and poorer prognosis than Caucasian (CA) women. We have recently shown higher insulin-like growth factor II (IGF-II) expression in paired breast tissue samples from AA women as compared to CA women. IGF-II is a potent mitogen that induces cell proliferation and survival signals through activation of the IGF-I and Insulin receptors (IGF-IR, IR) while IGF-II circulating levels are regulated by cellular uptake through the IGF2 receptor. We hypothesize that differential expression of the IGF1R and IGF2R among AA and CA women potentiates IGF-II mitogenic effects, thus contributing to the health disparity observed between these ethnic groups.

designWe examined IGF-IR and IGF2R mRNA, protein expression and IGF1R phosphorylation in paired breast tissue samples from AA and CA women by Real Time-PCR, Western blot analysis, immunohistochemistry and ELISA techniques.

resultsOur results showed significantly increased expression of IGF1R in AA normal tissues as compared to CA normal tissues. IGF1R expression was similar between AA normal and malignant tissues, while IGF1R, IRS-1 and Shc phosphorylation was significantly higher in AA tumor samples. Significantly higher levels of IGF2R were found in CA tumor samples as compared to AA tumor samples.

conclusionsWe conclude that IGF1R and IGF2R differential expression may contribute to the increased risk of malignant transformation in young AA women and to the more aggressive breast cancer phenotype observed among AA breast cancer patients and represent, along with IGF-II, potential therapeutic targets in breast cancer.

Indexed as

Health Status DisparitiesAdultAgedAged, 80 and overBlack or African AmericanBreast NeoplasmsCarcinoma, Ductal, BreastCarcinoma, PapillaryFemaleGene Expression Regulation, NeoplasticGenetic Predisposition to DiseaseHumansMiddle AgedReceptor, IGF Type 1Receptor, IGF Type 2RNA, MessengerReceptor, IGF Type 1Receptor, IGF Type 2RNA, Messenger

Identifiers

PMID20347606
PMCPMC2875325
OpenAlexW2097958648

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.