Evidence map›Paper›PMID 21608124›Full record

ArticleSmall (Weinheim an der Bergstrasse, Germany)2011

Preclinical evaluation of Raman nanoparticle biodistribution for their potential use in clinical endoscopy imaging.

Cristina L Zavaleta, Keith B Hartman, Zheng Miao, Michelle L James, Paul Kempen, Avnesh S Thakor, Carsten H Nielsen, Robert Sinclair, Zhen Cheng, Sanjiv S Gambhir

Abstract read
In one paragraph

Article in Small (Weinheim an der Bergstrasse, Germany), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
–field-weighted citation impact
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

42 citing papers in PubMed.

  1. A Raman-based endoscopic strategy for multiplexed molecular imaging.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Trial
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  9. Nanomaterial-based contrast agents.Nature reviews. Methods primers · 2023
    Article
  10. Review
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  12. Review
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  15. Multimodality Imaging Agents with PET as the Fundamental Pillar.Angewandte Chemie (International ed. in English) · 2019
    Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article
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

10 authors.

Cristina L ZavaletaMolecular Imaging Program at Stanford, Department of Radiology and Bio-X Program, 318 Campus Drive, Stanford, CA 94305, USA.
Keith B Hartman
Zheng Miao
Michelle L James
Paul Kempen
Avnesh S Thakor
Carsten H Nielsen
Robert Sinclair
Zhen Cheng
Sanjiv S Gambhir

Funding

Stanford Nanocharacterization LaboratoryU54CA119367 · NCI · STANFORD UNIVERSITY · PI NOLAN, GARRY P · 2006 to 2010
$19.8M
Small Animal ImagingP50CA114747 · NCI · STANFORD UNIVERSITY · PI GAMBHIR, SANJIV S · 2005 to 2014
$18.2M
Pilot ProjectsU54CA151459 · NCI · STANFORD UNIVERSITY · PI QUAKE, STEPHEN R · 2010 to 2014
$12.6M
Novel Molecular Targets of Neoplasia in the EsophagusU54CA105296 · NCI · STANFORD UNIVERSITY · PI TRIADAFILOPOULOS, GEORGE · 2004 to 2008
$5.7M
NCI NIH HHS P50 CA114747NCI NIH HHS U54 CA105296NCI NIH HHS U54 CA119367NCI NIH HHS U54 CA151459PHS HHS 5-R01-EBB000312
6 · The paper itself

Abstract

Raman imaging offers unsurpassed sensitivity and multiplexing capabilities. However, its limited depth of light penetration makes direct clinical translation challenging. Therefore, a more suitable way to harness its attributes in a clinical setting would be to couple Raman spectroscopy with endoscopy. The use of an accessory Raman endoscope in conjunction with topically administered tumor-targeting Raman nanoparticles during a routine colonoscopy could offer a new way to sensitively detect dysplastic lesions while circumventing Raman's limited depth of penetration and avoiding systemic toxicity. In this study, the natural biodistribution of gold surface-enhanced Raman scattering (SERS) nanoparticles is evaluated by radiolabeling them with (64) Cu and imaging their localization over time using micropositron emission tomography (PET). Mice are injected either intravenously (IV) or intrarectally (IR) with approximately 100 microcuries (μCi) (3.7 megabecquerel (MBq)) of (64) Cu-SERS nanoparticles and imaged with microPET at various time points post injection. Quantitative biodistribution data are obtained as % injected dose per gram (%ID g(-1)) from each organ, and the results correlate well with the corresponding microPET images, revealing that IV-injected mice have significantly higher uptake (p < 0.05) in the liver (5 h = 8.96% ID g(-1); 24 h = 8.27% ID g(-1)) than IR-injected mice (5 h = 0.09% ID g(-1); 24 h = 0.08% ID g(-1)). IR-injected mice show localized uptake in the large intestine (5 h = 10.37% ID g(-1); 24 h = 0.42% ID g(-1)) with minimal uptake in other organs. Raman imaging of excised tissues correlate well with biodistribution data. These results suggest that the topical application of SERS nanoparticles in the mouse colon appears to minimize their systemic distribution, thus avoiding potential toxicity and supporting the clinical translation of Raman spectroscopy as an endoscopic imaging tool.

Indexed as

AnimalsCopper RadioisotopesEndoscopyFemaleMiceMice, NudeMicroscopy, Electron, TransmissionNanoparticlesPositron-Emission TomographySpectrum Analysis, RamanCopper Radioisotopes

Identifiers

PMID21608124
PMCPMC4151626

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.