In vivo molecular imaging of cardiac angiogenesis in persons with and without type 2 diabetes: a cross-sectional 68 Ga-RGD-PET study

Jens Christian Laursen*, Ida Kirstine Bull Rasmussen, Emilie Hein Zobel, Philip Hasbak, Lene Holmvang, Christian Stevns Hansen, Bernt Johan von Scholten, Marie Frimodt-Møller, Peter Rossing, Tine Willum Hansen, Andreas Kjaer, Rasmus Sejersten Ripa

*Corresponding author af dette arbejde

Abstract

AIMS: To assess cardiac angiogenesis in type 2 diabetes by positron emission tomography (PET) tracer [68 Ga]Ga-NODAGA-E[(cRGDyK)]2 (68 Ga-RGD) imaging.

METHODS: Cross-sectional study including 20 persons with type 2 diabetes and 10 non-diabetic controls (CONs). Primary prespecified outcome was difference in cardiac angiogenesis (cardiac 68 Ga-RGD mean target-to-background ratio [TBRmean ]) between type 2 diabetes and CONs. Secondary outcome was to investigate associations between cardiac angiogenesis and kidney function and other risk factors.

RESULTS: Participants with type 2 diabetes had a mean ± SD age of 61 ± 9 years, 30% were women, median (IQR) diabetes duration of 11 (6-19) years and 3 (15%) had a history of cardiovascular disease. The CONs had comparable age and sex distribution to the participants with type 2 diabetes, and none had a history of coronary artery disease. Myocardial flow reserve was lower in type 2 diabetes (2.7 ± 0.6) compared with CONs (3.4 ± 1.2) ( p = 0.03) and coronary artery calcium score was higher (562 [142-905] vs. 1 [0-150] p = 0.04). Cardiac 68 Ga-RGD TBRmean was similar in participants with type 2 diabetes (0.89 ± 0.09) and CONs (0.89 ± 0.10) ( p = 0.92). Cardiac 68 Ga-RGD TBRmean was not associated with estimated glomerular filtration rate, urine albumin creatinine ratio, cardiovascular disease, coronary artery calcium score or baroreflex sensitivity, neither in pooled analyses nor in type 2 diabetes.

CONCLUSIONS: Cardiac angiogenesis, evaluated with 68 Ga-RGD PET, was similar in type 2 diabetes and CONs. Cardiac angiogenesis was not associated with kidney function or other risk markers in pooled analyses or in analyses restricted to type 2 diabetes.

OriginalsprogEngelsk
Artikelnummere14960
TidsskriftDiabetic medicine : a journal of the British Diabetic Association
Vol/bind40
Udgave nummer1
Antal sider11
ISSN0742-3071
DOI
StatusUdgivet - jan. 2023

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