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Background and Aim: Coagulation Factor VII plays a vital role in initiation of coagulation reaction. An increase of plasma
FVIIc levels (coagulation Factor VII activity) may indicate hypercoagulability related to the early phase of tissue factor-induced
coagulation. We aimed to examine associations between plasma FVIIc levels and obesity (visceral and overall) among middleaged
CAD and healthy Indian subjects.
Method: 130 middle-aged subjects were studied, of which 65 subjects had CAD and 65 subjects were age- and sex-matched
healthy controls. They underwent cardiac investigations (2D Echocardiography, stress test), anthropometric measurements
(body-mass-index: BMI, waist circumference: WC), biochemical (fasting plasma levels of lipid parameters, insulin resistance,
glucose, leptin etc) and hematological (FVII and fibrinogen) investigations.
Results: We observed significantly raised levels of FVII activity among the viscerally obese CAD compared to non-viscerally
obese CAD (p<0.01). Similar pattern was observed among the overall obese and non-overall -obese CAD subjects. We also
observed significantly raised (p<0.05) FVIIc among the obese controls compared to non-obese controls. Hypercoagulant
FVIIc activity among the CAD subjects was found correlated with WC (r=0.3, p<0.05) and BMI (r=0.2, p<0.05) as well as
hyperlipidemia (r=0.3, p<0.05). On multiple regression analysis, among CAD subjects, hypercoagulant FVII activity was found
associated significantly with abdominal and visceral obesity, independently of systolic blood pressure, leptin, insulin resistance
and glucose(�²:0.32, p<0.01), but not dyslipidemia.
Conclusion: We observed that Factor VII hypercoagulant activity plays a significant role in obesity in CAD subjects. Excess
risk for CAD associated with obesity may be mediated in part by enhanced potential for acute thrombosis through FVII
activation.
Biography
Rubina Karatela Khatri has completed PhD in 2006 from Jaslok Hospital and Research Centre, University of Mumbai. She works as a Research Associate at Cardiothoracic surgery department, Jaslok Hospital and Research Centre in Mumbai. She has published seven research papers in internationally reputed journals.