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Invade and conquer: Nicotine's role in promoting heart and blood vessel disease
Date:2/23/2012

ered by chemical insults from high blood sugar, modified low-density lipoproteins (LDL, the "bad cholesterol"), physical stress from high blood pressure, or chemical insult from tobacco smoke. Now nicotine itself appears to remodel key structures in a way that primes and enhances the invasion of smooth muscle lining the vessel wall.

Identifying a possible nicotine-posodome link in the invasion step of plaque formation process suggests a new means of intervening in the process: targeting the cell structures that are changed by nicotine and that promote invasion of the smooth muscle lining the vessel wall. If a therapy could prevent, slow, or reverse that step, it would likely interrupt the plaque-production cycle.

Fatty deposits accumulate in blood vessels beginning as young as age 10 and progress over a person's lifetime. Heart disease results if the deposits continue to build and harden into vessel-clogging plaque. When plaque ruptures, it can block blood flow, starving the heart or brain of oxygen and leading to a heart attack or stroke.

The presentation, "Cigarette smoke and nicotine-induced remodeling of actin cytoskeleton and extracellular matrix by vascular smooth muscle cells," is at 1:45 p.m. on Sunday, Feb. 26, 2012, in the San Diego Convention Center, Hall FGH. ABSTRACT: http://tinyurl.com/73e836j


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Contact: Ellen R. Weiss
eweiss@biophysics.org
240-290-5606
American Institute of Physics
Source:Eurekalert

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