Evidence map›Paper›PMID 21562807›Full record

ArticleEuropean radiology2011

Molecular and functional ultrasound imaging in differently aggressive breast cancer xenografts using two novel ultrasound contrast agents (BR55 and BR38).

Jessica Bzyl, Wiltrud Lederle, Anne Rix, Christoph Grouls, Isabelle Tardy, Sibylle Pochon, Monica Siepmann, Tobias Penzkofer, Michel Schneider, Fabian Kiessling and 1 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in European radiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

52 citing papers in PubMed, 107 citations in OpenAlex.

  1. Article
  2. CEUS with VEGFR2-targeted microbubbles for monitoring of early immunotherapy effects in a colorectal cancer model.Cancer imaging : the official publication of the International Cancer Imaging Society · 2026
    Article
  3. Article
  4. Molecular Ultrasound Imaging.Recent results in cancer research. Fortschritte der Krebsforschung. Progres dans les recherches sur le cancer · 2026
    Review
  5. Article
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  8. Review
  9. Article
  10. Emerging methods in radiology.Der Radiologe · 2020
    Review
  11. Article
  12. Molecular Ultrasound Imaging.Nanomaterials (Basel, Switzerland) · 2020
    Review
  13. Efficacy of Affibody-Based Ultrasound Molecular Imaging of Vascular B7-H3 for Breast Cancer Detection.Clinical cancer research : an official journal of the American Association for Cancer Research · 2020
    Article
  14. Article
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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

11 authors at 3 institutions in 2 countries.

Jessica BzylInstitute for Experimental Molecular Imaging, RWTH-Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany.
Wiltrud Lederle
Anne Rix
Christoph Grouls
Isabelle Tardy
Sibylle Pochon
Monica Siepmann
Tobias Penzkofer
Michel Schneider
Fabian Kiessling
Moritz Palmowski
RWTH Aachen University · DEBracco (Switzerland) · CHRuhr University Bochum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo characterise clinically translatable long-circulating (BR38) and VEGFR2-targeted (BR55) microbubbles (MB) and to assess their ability to discriminate breast cancer models with different aggressiveness.

methodsThe circulation characteristics of BR38 and BR55 were investigated in healthy mice. The relative blood volume (rBV) of MDA-MB-231 (n = 5) or MCF-7 (n = 6) tumours was determined using BR38. In the same tumours in-vivo binding specificity of BR55 was tested and VEGFR2 expression assessed. Data validation included quantitative immunohistological analysis.

resultsBR38 had a longer blood half-life than BR55 (>600 s vs. 218 s). BR38-enhanced ultrasound showed greater vascularisation in MDA-MB-231 tumours (p = 0.022), which was in line with immunohistology (p = 0.033). In-vivo competitive binding experiments proved the specificity of BR55 to VEGFR2 (p = 0.027). Binding of BR55 was significantly higher in MDA-MB-231 than in MCF-7 tumours (p = 0.049), which corresponded with the VEGFR2 levels found histologically (p = 0.015). However, differences became smaller when normalising the levels of BR55 to the rBV.

conclusionsBR38 and BR55 are well suited to characterising and distinguishing breast cancers with different angiogenesis and aggressiveness. Long-circulating BR38 MB allow extensive 3-dimensional examinations of larger or several organs. BR55 accumulation faithfully reflects the VEGFR2 status in tumours and depicts even small differences in angiogenesis.

Indexed as

Contrast MediaMicrobubblesAdenocarcinomaAnimalsBreast NeoplasmsDisease Models, AnimalFemaleFluorocarbonsHumansImmunohistochemistryMiceMice, NudeMolecular BiologyNeovascularization, PathologicNitrogenRandom AllocationContrast MediaFluorocarbonsNitrogenperfluorobutaneVascular Endothelial Growth Factor Receptor-2

Identifiers

PMID21562807
OpenAlexW2058809670

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.