68Ga-BNOTA-PRGD2 PET/CT in Evaluation of Myocardial Infarction
Anahtar kelimeler
Öz
Açıklama
Integrin αvβ3 is an important member of integrin receptor family and expressed preferentially on regenerative vascular endothelial cells and some tumor cells, but not or very low expressed on the quiescent vessel cells and other normal cells. The αvβ3 integrin is a key mediator of angiogenesis and thus may be an important diagnostic and therapeutic target associated with myocardial repair processes after ischaemic injury.
The tri-peptide sequence of arginine-glycine-aspartic acid (RGD) can specifically bind to the integrin αvβ3 receptor. Accordingly, a variety of radiolabeled RGD-based peptides have been developed for non-invasive imaging of integrin αvβ3 expression via positron emission tomography (PET) or single photon emission computed tomography (SPECT). Among all the RGD radiotracers studied in Myocardial Infarction (MI), 18F-Galacto-RGD and 99mTc-RGD has been investigated clinically in acute MI patients, showing focal tracer retention localized in the infarcted area. Recently, series of RGD dimeric peptides with PEG linkers have been developed. The new types of RGD peptides showed much higher in vitro integrin αvβ3-binding affinity than the single RGD tri-peptide sequence. As a representative, 68Ga-BNOTA-PRGD2 could be easily prepared and exhibited excellent in vivo behaviors in animal models. No adverse reactions are observed in both animal and human studies to date.
For the further interests in clinical translation of 68Ga-BNOTA-PRGD2, a open-label PET/CT study was designed to investigate the diagnostic performance of 68Ga-BNOTA-PRGD2 in myocardial infarction patients. A single dose of nearly 111 MBq 68Ga-BNOTA-PRGD2 ( ≤ 40 µg BNOTA-PRGD2) will be intravenously injected into the myocardial infarction patients. Visual and semiquantitative method will be used to assess the PET/CT images. 99mTc-MIBI myocardial perfusion SPECT images and 18F-FDG metabolism images will be used for co-registrated comparison.
Tarih
| Son Doğrulandı: | 10/31/2014 |
| İlk Gönderilen: | 02/20/2012 |
| Tahmini Kayıt Gönderildi: | 02/23/2012 |
| İlk Gönderilen: | 02/29/2012 |
| Son Güncelleme Gönderildi: | 04/05/2017 |
| Son Güncelleme Gönderildi: | 04/06/2017 |
| Fiili Çalışma Başlangıç Tarihi: | 01/31/2012 |
| Tahmini Birincil Tamamlanma Tarihi: | 11/30/2017 |
| Tahmini Çalışma Tamamlanma Tarihi: | 11/30/2017 |
Durum veya hastalık
Müdahale / tedavi
Drug: 68Ga-BNOTA-PRGD2 cardiac PET/CT scanning
Evre
Kol Grupları
| Kol | Müdahale / tedavi |
|---|---|
| Experimental: 68Ga-BNOTA-PRGD2 cardiac PET/CT scanning We will perform 68Ga-BNOTA-PRGD2 cardiac PET/CT scanning on myocardial infarction patients to determine its value. | Drug: 68Ga-BNOTA-PRGD2 cardiac PET/CT scanning Intravenous injection of one dosage of 111 MBq 68Ga-BNOTA-PRGD2. Tracer doses of 68Ga-BNOTA-PRGD2 will be used to image angiogenesis of myocardial infarction area by positron emission tomography / computed tomography (PET/CT) |
Uygunluk kriterleri
| Çalışmaya Uygun Yaşlar | 30 Years İçin 30 Years |
| Çalışmaya Uygun Cinsiyetler | All |
| Sağlıklı Gönüllüleri Kabul Ediyor | Evet |
| Kriterler | Inclusion Criteria: Myocardial infarction patients: - Males and females - ≥30 years old - Patients had myocardial infarction diagnosis (fulfilling two or three symptoms: clinical history of ischaemic type chest pain lasting for more than 20 minutes, changes in serial ECG tracings, rise and fall of serum cardiac biomarkers such as creatine kinase-MB fraction and troponin) Exclusion Criteria: - Females planning to bear a child recently or with childbearing potential - Have other kinds of heart diseases - Renal function: serum creatinine >3.0 mg/dL (270 μM/L) - Liver function: any hepatic enzyme level more than 5 times upper limit of normal. - Known severe allergy or hypersensitivity to IV radiographic contrast. - Patients not able to enter the bore of the PET/CT scanner. - Inability to lie still for the entire imaging time because of cough, pain, etc. - Inability to complete the needed examinations due to severe claustrophobia, radiation phobia, etc. - Concurrent severe and/or uncontrolled and/or unstable other medical disease that, in the opinion of the investigator, may significantly interfere with study compliance. |
Sonuç
Birincil Sonuç Ölçütleri
1. Visual and semiquantitative assessment (Standardized Uptake Values = SUVs) of myocardial infarction region and normal left ventricular wall [1 year]
İkincil Sonuç Ölçütleri
1. Number of participants with adverse events [1 year]
