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DOTA-Tyr(3)-octreotate radiolabelled with 111-In: Stability and the effect of receptor-specific binding on distribution

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F07%3A00006643" target="_blank" >RIV/00216208:11160/07:00006643 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    DOTA-Tyr(3)-octreotate radiolabelled with 111-In: Stability and the effect of receptor-specific binding on distribution

  • Original language description

    Radiolabeling, stability and pharmacokinetic analysis in rats of 111-In-DOTA-Tyr(3)-octreotate were studied. Radiolabeling of the peptide is simple and high radiolabeling yields were achieved. The agent was stable in in vivo conditions; the radioactivityeliminated by urine was nearly completely in the parent form. The affinity of the agent to somatostatin receptor-rich organs was substantially higher than that of commercially available 111-In-DTPA-octreotide (OctreoScan). The study confirmed high in vivo affinity of the peptide to somatostatin receptors and revealed that receptor binding alters both, distribution profile and elimination pathways of the agent in preclinical experiments.

  • Czech name

    DOTA-Tyr(3)-oktreotát radioaktivně značený 111-In: Stabilita a vliv receptorově-specifické vazby na distribuci

  • Czech description

    Bylo studováno radioaktivní značení, stabilita a farmakokinetika 111-In-DOTA-Tyr(3)-oktreotátu u krys. Radioaktivní značení peptide je jednoduché s vysokým výtěžkem značení. Látka byla stabilní v in vivo podmínkách; radioaktivita eliminovaná močí byla prakticky kompletně ve formě parentní látky. Afinita značeného peptidu k orgánům s vysokou hustotou somatostatinových receptorů byla podstatně vyšší než u komerčně dostupného 111-In-DTPA-octreotidu (OctreoScan). Studie potvrdila vysokou in vivo afinitu peptidu k somatostatinovým receptorům a ukázala, že receptorová vazba ovlivňuje distribuční profil a eliminační cesty značeného peptide v předklinickém experimentu.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    FR - Pharmacology and apothecary chemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Radioanalytical and Nuclear Chemistry

  • ISSN

    0236-5731

  • e-ISSN

  • Volume of the periodical

    273

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    HU - HUNGARY

  • Number of pages

    11

  • Pages from-to

    587-597

  • UT code for WoS article

  • EID of the result in the Scopus database