Dimeric [68Ga]DOTA-RGD Peptide Targeting αvβ3 Integrin Reveals Extracellular Matrix Alterations after Myocardial Infarction View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2014-12

AUTHORS

Max Kiugel, Ingrid Dijkgraaf, Ville Kytö, Semi Helin, Heidi Liljenbäck, Tiina Saanijoki, Cheng-Bin Yim, Vesa Oikonen, Pekka Saukko, Juhani Knuuti, Anne Roivainen, Antti Saraste

ABSTRACT

PURPOSE: We evaluated a dimeric RGD-peptide, [(68)Ga]DOTA-E-[c(RGDfK)]2, for positron emission tomography (PET) imaging of myocardial integrin expression associated with extracellular matrix remodeling after myocardial infarction (MI) in rat. PROCEDURES: Male Sprague-Dawley rats were studied at 7 days and 4 weeks after MI induced by permanent ligation of the left coronary artery and compared with sham-operated controls. RESULTS: In vivo imaging revealed higher tracer uptake in the infarcted area than in the remote non-infarcted myocardium of the same rats both at 7 days (MI/remote ratio, 2.25 ± 0.24) and 4 weeks (MI/remote ratio, 2.13 ± 0.37) post-MI. Compared with sham-operated rats, tracer uptake was higher also in the remote, non-infarcted myocardium of MI rats both at 7 days and 4 weeks where it coincided with an increased interstitial fibrosis. Standardized uptake values correlated well with the results of tracer kinetic modeling. Autoradiography confirmed the imaging results showing 5.1 times higher tracer uptake in the infarcted than remote area. Tracer uptake correlated with the amount of β3 integrin subunits in the infarcted area. CONCLUSIONS: Our results show that integrin-targeting [(68)Ga]DOTA-E-[c(RGDfK)]2 is a potential tracer for monitoring of myocardial extracellular matrix remodeling after MI using PET. More... »

PAGES

793-801

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11307-014-0752-1

DOI

http://dx.doi.org/10.1007/s11307-014-0752-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1041821538

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24984688


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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s11307-014-0752-1'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s11307-014-0752-1'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/s11307-014-0752-1'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s11307-014-0752-1'


 

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