Pericardial adipose tissue determined by dual source CT is a risk factor for coronary atherosclerosis.
OBJECTIVE
Pericardial fat as a visceral fat depot may be involved in the pathogenesis of coronary atherosclerosis. To gain evidence for that concept we sought to investigate the relation of pericardial fat volumes to risk factors, serum adiponectin levels, inflammatory biomarkers, and the quantity and morphology of coronary atherosclerosis.


RESULTS
Using Dual source CT angiography pericardial fat volume and coronary atherosclerosis were assessed simultaneously. Plaques were classified as calcified, mixed, and noncalcified, and the number of affected segments served as quantitative score. Patients with atherosclerotic lesions had significant larger PAT volumes (226 cm3+/-92 cm3) than patients without atherosclerosis (134 cm3+/-56 cm3; P>0.001). No association was found between BMI and coronary atherosclerosis. PAT volumes >300 cm3 were the strongest independent risk factor for coronary atherosclerosis (odds ratio 4.1; CI 3.63 to 4.33) also significantly stronger compared to the Framingham score. We furthermore demonstrated that elevated PAT volumes are significantly associated with low adiponectin levels, low HDL levels, elevated TNF-alpha levels, and hsCRP.


CONCLUSIONS
In the present study we demonstrated that elevated PAT volumes are associated with coronary atherosclerosis, hypoadiponectinemia, and inflammation and represent the strongest risk factor for the presence of atherosclerosis and may be important for risk stratification and monitoring.
Greif
Martin
M
Department of Cardiology, Klinikum Grosshadern, University Hospital of Munich, Germany.
Becker
Alexander
A
von Ziegler
Franz
F
Lebherz
Corinna
C
Lehrke
Michael
M
Broedl
Uli C
UC
Tittus
Janine
J
Parhofer
Klaus
K
Becker
Christoph
C
Reiser
Maximilian
M
Knez
Andreas
A
Leber
Alexander W
AW
D000273:Adipose Tissue / Q000000981:diagnostic imaging* / Q000473:pathology; D000368:Aged; D015415:Biomarkers; D015992:Body Mass Index; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010496:Pericardium / Q000000981:diagnostic imaging* / Q000473:pathology; D016016:Proportional Hazards Models; D012372:ROC Curve; D012307:Risk Factors; D014057:Tomography, X-Ray Computed
D015415:Biomarkers