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Exendin-4-based radiopharmaceuticals for glucagonlike peptide-1 receptor PET/CT and SPECT/CT.

Identifieur interne : 001989 ( Main/Exploration ); précédent : 001988; suivant : 001990

Exendin-4-based radiopharmaceuticals for glucagonlike peptide-1 receptor PET/CT and SPECT/CT.

Auteurs : RBID : pubmed:20595511

English descriptors

Abstract

Strong overexpression of glucagonlike peptide-1 (GLP-1) receptors in human insulinoma provides an attractive target for imaging. The first clinical trials demonstrated that GLP-1 receptor SPECT/CT using [Lys(40)(Ahx [6-aminohexanoic acid]-DOTA-(111)In)NH(2)]-exendin-4 can localize hardly detectable insulinomas. However, [Lys(40)(Ahx-DOTA-(111)In)NH(2)]-exendin-4 imaging has drawbacks related to the use of (111)In in that it is costly and carries a relatively high radiation burden for the patient. The aim of this study was the preclinical evaluation of [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 for PET/CT and [Lys(40)(Ahx-hydrazinonicotinamide [HYNIC]-(99m)Tc)NH(2)]-exendin-4 for SPECT/CT.

DOI: 10.2967/jnumed.110.074914
PubMed: 20595511

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Le document en format XML

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<title xml:lang="en">Exendin-4-based radiopharmaceuticals for glucagonlike peptide-1 receptor PET/CT and SPECT/CT.</title>
<author>
<name sortKey="Wild, Damian" uniqKey="Wild D">Damian Wild</name>
<affiliation wicri:level="1">
<nlm:affiliation>Clinic and Institute of Nuclear Medicine, University Hospital Basel, Basel, Switzerland.</nlm:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>Clinic and Institute of Nuclear Medicine, University Hospital Basel, Basel</wicri:regionArea>
</affiliation>
</author>
<author>
<name sortKey="Wicki, Andreas" uniqKey="Wicki A">Andreas Wicki</name>
</author>
<author>
<name sortKey="Mansi, Rosalba" uniqKey="Mansi R">Rosalba Mansi</name>
</author>
<author>
<name sortKey="Behe, Martin" uniqKey="Behe M">Martin Béhé</name>
</author>
<author>
<name sortKey="Keil, Boris" uniqKey="Keil B">Boris Keil</name>
</author>
<author>
<name sortKey="Bernhardt, Peter" uniqKey="Bernhardt P">Peter Bernhardt</name>
</author>
<author>
<name sortKey="Christofori, Gerhard" uniqKey="Christofori G">Gerhard Christofori</name>
</author>
<author>
<name sortKey="Ell, Peter J" uniqKey="Ell P">Peter J Ell</name>
</author>
<author>
<name sortKey="M Cke, Helmut R" uniqKey="M Cke H">Helmut R Mäcke</name>
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<date when="2010">2010</date>
<idno type="doi">10.2967/jnumed.110.074914</idno>
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<front>
<div type="abstract" xml:lang="en">Strong overexpression of glucagonlike peptide-1 (GLP-1) receptors in human insulinoma provides an attractive target for imaging. The first clinical trials demonstrated that GLP-1 receptor SPECT/CT using [Lys(40)(Ahx [6-aminohexanoic acid]-DOTA-(111)In)NH(2)]-exendin-4 can localize hardly detectable insulinomas. However, [Lys(40)(Ahx-DOTA-(111)In)NH(2)]-exendin-4 imaging has drawbacks related to the use of (111)In in that it is costly and carries a relatively high radiation burden for the patient. The aim of this study was the preclinical evaluation of [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 for PET/CT and [Lys(40)(Ahx-hydrazinonicotinamide [HYNIC]-(99m)Tc)NH(2)]-exendin-4 for SPECT/CT.</div>
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<DateCreated>
<Year>2010</Year>
<Month>07</Month>
<Day>02</Day>
</DateCreated>
<DateCompleted>
<Year>2010</Year>
<Month>07</Month>
<Day>27</Day>
</DateCompleted>
<DateRevised>
<Year>2013</Year>
<Month>11</Month>
<Day>21</Day>
</DateRevised>
<Article PubModel="Print">
<Journal>
<ISSN IssnType="Electronic">1535-5667</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>51</Volume>
<Issue>7</Issue>
<PubDate>
<Year>2010</Year>
<Month>Jul</Month>
</PubDate>
</JournalIssue>
<Title>Journal of nuclear medicine : official publication, Society of Nuclear Medicine</Title>
<ISOAbbreviation>J. Nucl. Med.</ISOAbbreviation>
</Journal>
<ArticleTitle>Exendin-4-based radiopharmaceuticals for glucagonlike peptide-1 receptor PET/CT and SPECT/CT.</ArticleTitle>
<Pagination>
<MedlinePgn>1059-67</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.2967/jnumed.110.074914</ELocationID>
<Abstract>
<AbstractText Label="UNLABELLED">Strong overexpression of glucagonlike peptide-1 (GLP-1) receptors in human insulinoma provides an attractive target for imaging. The first clinical trials demonstrated that GLP-1 receptor SPECT/CT using [Lys(40)(Ahx [6-aminohexanoic acid]-DOTA-(111)In)NH(2)]-exendin-4 can localize hardly detectable insulinomas. However, [Lys(40)(Ahx-DOTA-(111)In)NH(2)]-exendin-4 imaging has drawbacks related to the use of (111)In in that it is costly and carries a relatively high radiation burden for the patient. The aim of this study was the preclinical evaluation of [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 for PET/CT and [Lys(40)(Ahx-hydrazinonicotinamide [HYNIC]-(99m)Tc)NH(2)]-exendin-4 for SPECT/CT.</AbstractText>
<AbstractText Label="METHODS" NlmCategory="METHODS">Internalization, biodistribution, dosimetry, and imaging studies were performed in the Rip1Tag2 mouse model of pancreatic beta-cell carcinogenesis and compared with our gold standard [Lys(40)(Ahx-DOTA-(111)In)NH(2)]-exendin-4. Poly-glutamic acid and Gelofusine, a gelatin-based plasma expander, were used for renal uptake reduction studies.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">The tumor uptake of [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 was 205 +/- 59 percentage injected activity per gram of tissue at 4 h. Other GLP-1 receptor-positive organs showed more than 4.8 times lower radioactivity uptake. [Lys(40)(Ahx-HYNIC-(99m)Tc/ethylenediaminediacetic acid [EDDA])NH(2)]-exendin-4, compared with its (111)In- and (68)Ga-labeled sister compounds, showed significantly less tumor and organ uptake. The significantly lower tumor and organ uptake of [Lys(40)(Ahx-HYNIC-(99m)Tc/EDDA)NH(2)]-exendin-4 did not result in inferior tumor-to-organ ratios or reduced image quality. All radiopeptides tested showed a high tumor-to-background ratio, resulting in the visualization of small tumors (maximum diameter between 1.0 and 3.2 mm) by SPECT and PET. The only exception was the kidneys, which also showed high uptake. This uptake could be reduced by 49%-78% using poly-glutamic acid, Gelofusine, or a combination of the 2. The estimated effective radiation dose was 3.7 muSv/MBq for [Lys(40)(Ahx-HYNIC-(99m)Tc/EDDA)NH(2)]-exendin-4, which was 8 times less than that for [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 and 43 times less than that for [Lys(40)(Ahx-DOTA-(111)In)NH(2)]-exendin-4.</AbstractText>
<AbstractText Label="CONCLUSION" NlmCategory="CONCLUSIONS">These promising pharmacokinetic and imaging data show that [Lys(40)(Ahx-DOTA-(68)Ga)NH(2)]-exendin-4 and [Lys(40)(Ahx-HYNIC-(99m)Tc/EDDA)NH(2)]-exendin-4 are suitable candidates for clinical GLP-1 receptor imaging studies.</AbstractText>
</Abstract>
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