Evidence map›Paper›PMID 20461021›Full record

ArticleMenopause (New York, N.Y.)

Synthetic progestins induce growth and metastasis of BT-474 human breast cancer xenografts in nude mice.

Yayun Liang, Indira Benakanakere, Cynthia Besch-Williford, Ryyan S Hyder, Mark R Ellersieck, Salman M Hyder

Abstract read
In one paragraph

Article in Menopause (New York, N.Y.). 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
3.0field-weighted citation impact, top 8% 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, 50 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 2 institutions in 2 countries.

Yayun LiangDepartment of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA.
Indira Benakanakere
Cynthia Besch-Williford
Ryyan S Hyder
Mark R Ellersieck
Salman M Hyder
Cardiovascular Research Center · BRUniversity of Missouri · US

Funding

Progestin Regulation of VEGF in Breast Cancer CellsR01CA086916 · NCI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI HYDER, SALMAN M · 2002 to 2005
$1.1M
Recovery of functional p53 as a therapeutic approach for breast cancerR56CA086916 · NCI · UNIVERSITY OF MISSOURI-COLUMBIA · PI HYDER, SALMAN M · 2008 to 2008
$311k
NCI NIH HHS CA-86916NCI NIH HHS R01 CA086916NCI NIH HHS R56 CA086916
6 · The paper itself

Abstract

objectivePrevious studies have shown that sequential exposure to estrogen and progesterone or medroxyprogesterone acetate (MPA) stimulates vascularization and promotes the progression of BT-474 and T47-D human breast cancer cell xenografts in nude mice (Liang et al, Cancer Res 2007, 67:9929). In this follow-up study, the effects of progesterone, MPA, norgestrel (N-EL), and norethindrone (N-ONE) on BT-474 xenograft tumors were compared in the context of several different hormonal environments. N-EL and N-ONE were included in the study because synthetic progestins vary considerably in their biological effects and the effects of these two progestins on the growth of human tumor xenografts are not known.

methodsEstradiol-supplemented intact and ovariectomized immunodeficient mice were implanted with BT-474 cells. Progestin pellets were implanted simultaneously with estradiol pellets either 2 days before tumor cell injection (ie, combined) or 5 days after tumor cell injections (ie, sequentially).

resultsProgestins stimulated the growth of BT-474 xenograft tumors independent of exposure timing and protocol, MPA stimulated the growth of BT-474 xenograft tumors in ovariectomized mice, and progestins stimulated vascular endothelial growth factor elaboration and increased tumor vascularity. Progestins also increased lymph node metastasis of BT-474 cells. Therefore, progestins, including N-EL and N-ONE, induce the progression of breast cancer xenografts in nude mice and promote tumor metastasis.

conclusionsThese observations suggest that women who ingest progestins for hormone therapy or oral contraception could be more at risk for developing breast cancer because of proliferation of existing latent tumor cells. Such risks should be considered in the clinical setting.

Indexed as

Breast NeoplasmsLymphatic MetastasisAnimalsCell Line, TumorDisease Models, AnimalFemaleHormone Replacement TherapyMiceMice, NudeNorethindroneNorgestrelProgesterone CongenersTransplantation, HeterologousNorethindroneNorgestrelProgesterone Congeners

Identifiers

PMID20461021
PMCPMC2923240
OpenAlexW2087525462

What OpenQuestion holds

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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.