Antioxidant-Amino Acid Mix Shields Blood Vessels

[Guest guest]

> Antioxidant-Amino Acid Mix Shields Blood Vessels

> Wed January 22, 2003 06:03 PM ET

>

> NEW YORK (Reuters Health) - A cocktail of

> antioxidants mixed with an amino

> acid may protect blood vessels from inflammation and

> the buildup of plaque,

> a preliminary study suggests.

> According to the report, antioxidants and

> L-arginine, an amino acid,

> protected the cells of human blood vessels from the

> wear and tear of fluid

> rushing by.

>

> Branch points, areas where two vessels meet, are

> particularly vulnerable

> because they are exposed to turbulent shear-stress,

> a type of force imposed

> by the flow of blood that can cause inflammation and

> plaque build up leading

> to atherosclerosis, or hardening of the arteries.

>

> Shear-stress can also increase damage from free

> radicals, compounds that can

> cause varying degrees of damage to cells,

> researchers report in the online

> early edition of the Proceedings of the National

> Academy of Sciences.

>

> To investigate if antioxidants and L-arginine might

> prevent this type of

> damage, researchers exposed human cells to different

> fluid flow forces

> inside a culture dish.

>

> High shear-stress caused cells to produce

> inflammatory compounds. However,

> fewer dangerous compounds were produced when cells

> were coated with

> antioxidants and L-arginine. These substances also

> caused the cells to

> produce eNOS (endothelial nitric oxide synthase), an

> enzyme that allows

> vessels to expand and prevents blood from clotting.

>

> Antioxidants have been shown to squelch free

> radicals while L-arginine is a

> precursor of nitric oxide, a compound that helps the

> inner lining of blood

> vessels to dilate.

>

> In a second experiment, researchers demonstrated

> that these compounds

> reduced the damage caused by shear-stress in mice

> bred to have high

> cholesterol.

>

> " These results demonstrate that atherogenic effects

> induced by turbulent

> shear-stress can be prevented by co-treatment with

> antioxidants and

> L-arginine, " Dr. Louis J. Ignarro from the

> University of California in Los

> Angeles and colleagues conclude.

>

> SOURCE: Proceedings of the National Academy of

> Sciences 2003;10.1073.

>

>

 

 

 

 

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[Guest guest]

*****Allison posted.....

> Antioxidant-Amino Acid Mix Shields Blood Vessels

> Wed January 22, 2003 06:03 PM ET

>

> NEW YORK (Reuters Health) - A cocktail of

> antioxidants mixed with an amino

> acid may protect blood vessels from inflammation and

> the buildup of plaque

-----clipped-----

 

Interesting...but very old news!

 

This info about antioxidants and specific amino acids (i.e., the components

parts of protein) have been applied in nutritional research for at least 20

years. While I don't have the exact source readily available, I believe

this affect of blood vessels protection is actually a replication of another

larger study.

 

Dave

[Guest guest]

I hate it when that happens.

Warmly,

Allison

 

--- daveo <daveo wrote:

> *****Allison posted.....

> > Antioxidant-Amino Acid Mix Shields Blood Vessels

> > Wed January 22, 2003 06:03 PM ET

> >

> > NEW YORK (Reuters Health) - A cocktail of

> > antioxidants mixed with an amino

> > acid may protect blood vessels from inflammation

> and

> > the buildup of plaque

> -----clipped-----

>

> Interesting...but very old news!

>

> This info about antioxidants and specific amino

> acids (i.e., the components

> parts of protein) have been applied in nutritional

> research for at least 20

> years. While I don't have the exact source readily

> available, I believe

> this affect of blood vessels protection is actually

> a replication of another

> larger study.

>

> Dave

>

>

>

>

>

>

>

>

 

 

 

 

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