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Hypertension. 2008;52:57-58
Published online before print May 26, 2008, doi: 10.1161/HYPERTENSIONAHA.108.112441
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(Hypertension. 2008;52:57.)
© 2008 American Heart Association, Inc.


Editorial Commentaries

Weight Loss and Vascular Function

The Good and the Unknown

Sudha S. Shankar; Helmut O. Steinberg

From Merck Research Laboratories, Rahway, NJ.

Correspondence to Helmut O. Steinberg, Merck Research Laboratories, RY34, 126 East Lincoln Ave, Rahway, NJ 07065-0900. E-mail helmut_steinberg@merck.com


An extract of the first 250 words of the full text is provided, because this article has no abstract.
 

Obesity has emerged recently as a major epidemic and is turning out to be a key driving force for the rapid escalation not just in the rates of type 2 diabetes mellitus, but of cardiovascular disease as well. It is estimated that currently ≤300 000 deaths per year are attributable to obesity1 in the United States, with a significant proportion being attributable to cardiovascular events.2 It is known that, in morbidly obese subjects, weight loss by bariatric surgery is associated with a reduction in cardiovascular events. However, there is scant evidence for reduction in cardiovascular events related to weight loss in lower risk overweight and obese subjects.

Endothelial function is impaired in obesity,3 and impaired endothelial function has, in turn, been associated with increased cardiovascular events.4,5 Thus, it is reasonable to hypothesize that weight loss should be associated with an improvement in endothelial function and, thereby, a decrease in cardiovascular events. In the current issue of Hypertension, Pierce et al6 report the results of testing the first part of this hypothesis. They describe the effect of weight loss on vascular function as measured by flow-mediated dilation in the forearm and changes in forearm blood flow in response to intraarterial infusions of acetylcholine, an endothelium-dependent vasodilator, as well as sodium nitroprusside, an endothelium-independent vasodilator. In addition, they looked for predictors of changes in vascular function associated with weight loss.

The authors should be commended for undertaking and completing a challenging study with multiple complexities ranging from patient retention to ensuring . . . [Full Text of this Article]


Related Article:

Weight Loss Alone Improves Conduit and Resistance Artery Endothelial Function in Young and Older Overweight/Obese Adults
Gary L. Pierce, Stacy D. Beske, Brooke R. Lawson, Kara L. Southall, Francoise J. Benay, Anthony J. Donato, and Douglas R. Seals
Hypertension 2008 52: 72-79. [Abstract] [Full Text] [PDF]