Philadelphia, PA, 4 June 2009 -Preventing vascular congestion is an important mediator in heart failure, reports a study in the June issue of the Journal of Cardiac Failure (http://www.
The authors previously demonstrated that venous endothelium is a key regulator of central blood volume, organ perfusion and hemostasis in heart failure (HF). The present study demonstrates that in venous endothelium, inflammatory/oxidative and hemostatic programs were significantly activated in HF dogs compared to normal dogs. In normal dogs, fluid loading significantly activated these same programs to levels that approached those seen in dogs with HF.
These findings suggest that biomechanical stress (i.e. vascular stretch) may be an important mediator of these endothelial responses, and highlight the importance of preventing congestion. Further investigation is needed to clarify whether the venous endothelial phenotype in unique individuals may ultimately allow us to track the vascular impact of subsequent environmental (i.e. biomechanical and biochemical) stressors, as well as the potential response to therapeutic interventions.
"This important study is consistent with a growing literature, indicating that congestion itself may mediate many of the physiological abnormalities in heart failure, such as vascular dysfunction, inflammation, renal dysfunction and hypercoagulability," commented Barry M. Massie, M.D., Editor-in-Chief of the Journal of Cardiac Failure.
Notes to Editors:
The study, "Activation of Endothelial Cells in Conduit Veins of Dogs with Heart Failure and Veins of Normal Dogs Following Vascular Stretch by Acute Volume Loading," authored by Paolo C. Colombo, Sharad Rastogi, Duygu Onat, Valerio Zacà, Ramesh C. Gupta, Ulrich P. Jorde, and Hani C. Sabbah (DOI: 10.1016/j.cardfail.2008.12.006) was supported by a research grant from the National Heart, Lung and Blood Institute. It appears in the Journal of Cardiac Failure, Volume 15, Issue 5 (June 2009) published by Elsevier.com
About Journal of Cardiac Failure
Journal of Cardiac Failure (http://www.
About the Heart Failure Society of America
The Heart Failure Society of America (HFSA) is a nonprofit educational organization, founded in 1994 as the first organized association of heart failure experts. Today HFSA has over 1,700 members and provides a forum for all those interested in heart function, heart failure research and patient care. The Society also serves as a resource for governmental agencies (FDA, NIH, NHLBI, CMS). Additional information on HFSA can be found at www.hfsa.org.
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