68 Ga-NODAGA-E[c(RGDγK)]2: Positron Emission Tomography Tracer for Imaging of Myocardial Angiogenesis
68Ga-NODAGA-E[c(RGDγK)]2: a Novel Positron Emission Tomography (PET) Tracer for in Vivo Molecular Imaging of Myocardial Angiogenesis Following Myocardial Infarction
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Detaljert beskrivelse
Ischemic heart disease is worldwide the single most frequent cause of death. The number of patients surviving acute myocardial injury is increasing due to improved acute treatment. However, after the initial repair, the tissue undergoes a remodeling phase to compensate for the damaged area. This re-modeling phase can change the structure end geometry of the heart resulting in lower ejection fraction, leading to cardiac dysfunction, which eventually leads to heart failure. Understanding and ideally modifying the reparative mechanisms following myocardial infarction is increasingly important and may lead to improved outcome.
If the heart suffers from ischemia following an acute coronary event, the tissue reacts strongly to the hypoxia. The body will as a compensatory mechanism create new vessel to provide the tissue with oxygen. This is known as the biological process of angiogenesis. This complex process involves different angiogenic and pro-fibrotic transcription factors that initiate the restoration of capillaries by sprouting from the existing endothelial cells in response to hypoxia.
Time seem essential to protect and save the myocardium. An early onset of cytokines and growth factors is associated with a decline in cardiomyocytes apoptosis, smaller infarct areas, and decreased ventricular dilation. Therefore, an early induction of angiogenesis seems important for a good prognosis of the patient.
Integrin αvβ3 is a transmembrane cell surface receptor that is markedly upregulated in states of angiogenesis. It facilitates migration and proliferation and thereby allowing cells to respond to extracellular environment. Integrin αvβ3 is thus a key player in the angiogenic process. The integrin αvβ3 has a binding site for an RGD peptide (Arg-Gly-Asp motif) and this can be targeted by PET tracers.
RGD-based PET tracers have been shown to accumulate at the site of myocardial necrosis in both human and animal studies. The uptake seems to peak a few weeks after the infarction and may correlate to recovery of cardiac function and thus serve as a prognostic marker.
Studietype
Studietype
Registrering (Faktiske)
Registrering
Fase
Fase
- Fase 2
Kontakter og plasseringer
Studiesteder
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Region Hovedstaden
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Copenhagen, Region Hovedstaden, Danmark, 2100
- Department of Physiology, Nuclear Medicine and PET
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Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Age over 50 years
Acute myocardial infarction Group:
- Verified first-time acute myocardial infarction treated with PCI
Control Group:
- Previous healthy
- No known cardiac disease
Exclusion Criteria:
- No prior history of acute coronary infarction
- No prior history of Heart surgery
- Not treated with anti-angiogenic medicine
- Subject with pacemaker, cochlear implant or insulin pump
- Pregnancy
- Lactation
- Severe claustrophobia
- Severe obesity (weight above 140kg)
- If a subject is in the fertile age, a pregnancy test will be use prior to injection to the PET_tracer
- If a subject is having a severe allergic reaction to the PET-tracer, the person will be excluded for the rest of the trial
- If the PET-tracer is administered subcutaneous, the person will be excluded for the rest of the trial¨
- Tupe I or II diabetes
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Ikke-randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
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Eksperimentell: Acute myocardial infarctions group
200 MBq 68Ga-NODAGA-E[c(RGDyK)]2 administered IV. three times.
1-3 days after intervention, 7-10 days after intervention and 30-35 days after intervention.
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200 MBq 68Ga-NODAGA-E[c(RGDyK)]2 administrert IV.
Andre navn:
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Aktiv komparator: Control group
200 MBq 68Ga-NODAGA-E[c(RGDyK)]2 administered IV. one time.
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200 MBq 68Ga-NODAGA-E[c(RGDyK)]2 administrert IV.
Andre navn:
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Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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To evaluate myocardial angiogenesis
Tidsramme: 30-35 days
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Analysing uptake of 68Ga-NODAGA-E[c(RGDyK)]2 Positron Emission Tomography in myocardial infarction after PCI
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30-35 days
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and myocardial perfusion
Tidsramme: 30-35 days
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Quantitative uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and change in myocardial perfusion after PCI using Rubidium 82 Positron Emission Tomography after Percutaneous coronary intervention(PCI)
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30-35 days
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Uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and functional recovery
Tidsramme: 30-35 days
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Quantitative uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and functional recovery using Magnetic Resonance after PCI
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30-35 days
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Uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and viability
Tidsramme: 30-35 days
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Quantitative uptake of 68Ga-NODAGA-E[c(RGDyK)]2 and viability using Flour-Deoxy-Glucose Positron Emission Tomography after PCI
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30-35 days
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Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Etterforskere
Etterforskere
- Studieleder: Andreas Kjær, MD, Rigshospitalet, Denmark
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Studiestart
Primær fullføring (Faktiske)
Primær fullføring
Studiet fullført (Faktiske)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
Andre studie-ID-numre
- EUDRACR-number: 2017-002709-36
Plan for individuelle deltakerdata (IPD)
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