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Articles by M. A Hlatky
Total Records ( 2 ) for M. A Hlatky
  E. D Peterson , J. A Spertus , D. J Cohen , M. A Hlatky , A. S Go , B. G Vickrey , J. L Saver and P. C. Hinton

Background— The field of outcomes research seeks to define optimal treatment in practice and to promote the rapid full adoption of efficacious therapies into routine clinical care. The American Heart Association (AHA) formed the AHA Pharmaceutical Roundtable (PRT) Outcomes Research Centers Network to accelerate attainment of these goals. Participating centers were intended to carry out state-of-the-art outcomes research in cardiovascular disease and stroke, to train the next generation of investigators, and to support the formation of a collaborative research network.

Program— After a competitive application process, 4 AHA PRT Outcomes Research Centers were selected: Duke Clinical Research Institute; Saint Luke’s Mid America Heart Institute; Stanford University–Kaiser Permanente of Northern California; and University of California, Los Angeles. Each center proposed between 1 and 3 projects organized around a single theme in cardiovascular disease or stroke. Additionally, each center will select and train up to 6 postdoctoral fellows over the next 4 years, and will participate in cross-collaborative activities among the centers.

Conclusions— The AHA PRT Outcomes Research Centers Network is designed to further strengthen the field of cardiovascular disease and stroke outcomes research by fostering innovative research, supporting high quality training, and encouraging center-to-center collaborations.

  K Sydow , S. P Fortmann , J. M Fair , A Varady , M. A Hlatky , A. S Go , C Iribarren , P. S Tsao and for the ADVANCE Investigators

Background: Endothelium-derived nitric oxide plays a crucial role in the regulation of vascular tone and the development of cardiovascular disease. The endogenous nitric oxide synthase inhibitor asymmetric dimethylarginine (ADMA) has emerged as a novel cardiovascular risk factor. ADMA appears to be an independent predictor for cardiovascular and overall mortality. However, the majority of studies investigating the clinical role of ADMA were performed in European study populations with few individuals of other ethnicities.

Methods: We performed a cross-sectional study of 980 healthy, older (age 60–72 years) individuals of different ethnicities living in the San Francisco Bay area and analyzed ADMA plasma concentrations and their relationship to other cardiovascular risk factors. Plasma ADMA concentrations were measured using a recently developed, highly sensitive ELISA.

Results: In our entire sample, we were able to define a reference interval for ADMA plasma concentrations of 0.47 (90% CI 0.46–0.48) µmol/L to 0.85 (0.84–0.89) µmol/L. The mean ADMA concentration was 0.63 (SD 0.11) µmol/L (median 0.61 µmol/L). Mean ADMA concentrations were significantly lower in African Americans (0.60 µmol/L; P < 0.01) and mixed non-Hispanics (0.60 µmol/L; P < 0.05) compared with whites (0.63 µmol/L). ADMA was positively correlated with cystatin-C in both men ( = 0.29) and women ( = 0.37), and median plasma ADMA concentrations increased across cystatin-C quintiles.

Conclusions: ADMA varies nearly 2-fold across a healthy sample of older men and women, correlates with age, body mass index, and renal function, and is different across ethnic groups. Additional studies in a wider age range and including larger ethnic subgroups would be useful.

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