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New more Dangerous form of LDL found.
billh99 posted:
"Super-Sticky 'Ultra-Bad' Cholesterol Revealed in People at High Risk of Heart Disease
COVENTRY, ENGLAND, UK — Scientists from the University of Warwick have discovered why a newly found form of cholesterol seems to be 'ultra-bad', leading to increased risk of heart disease. The discovery could lead to new treatments to prevent heart disease particularly in people with type 2 diabetes and the elderly.

The research, funded by the British Heart Foundation , found that 'ultrabad' cholesterol, called MGmin-low-density lipoprotein, which is more common in people with type 2 diabetes and the elderly, appears to be 'stickier' than normal low-density lipoprotein. This makes it more likely to attach to the walls of arteries. When low-density lipoprotein attaches to artery walls it helps form the dangerous 'fatty' plaques' that cause coronary heart disease.

The researchers made the discovery by creating human MGmin-low-density lipoprotein in the laboratory, then studying its characteristics and interactions with other important molecules in the body.
They found that MGmin-low-density lipoprotein is created by the addition of sugar groups to 'normal' low-density lipoprotein — a process called glycation — making low-density lipoprotein smaller and denser. By changing its shape, the sugar groups expose new regions on the surface of the low-density lipoprotein. These exposed regions are more likely to stick to artery walls, helping to build fatty plaques. As fatty plaques grow they narrow arteries — reducing blood flow — and they can eventually rupture, triggering a blood clot that causes a heart attack or stroke.
The discovery might also explain why metformin, a widely prescribed type 2 diabetes drug, seems to lead to reduced heart disease risk. Metformin is known to lower blood sugar levels, and this new research shows it may reduce the risk of coronary heart disease by blocking the transformation of normal low-density lipoprotein to the more 'sticky' MGmin-low-density lipoprotein.


We've known for a long time that people with diabetes are at greater risk of heart attack and stroke. There is still more work to be done to untangle why this is the case, but this study is an important step in the right direction.
"This study shows how the make-up and the shape of a type of low-density lipoprotein cholesterol found in diabetics could make it more harmful than other types of low-density lipoprotein. The findings provide one possible explanation for the increased risk of coronary heart disease in people with diabetes.
"Understanding exactly how 'ultrabad' low-density lipoprotein damages arteries is crucial, as this knowledge could help develop new anti-cholesterol treatments for patients.""
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toneman84084 responded:
Well thanks a lot Bill, as if we didn't have enough to worry about:)

Very interesting read, I need to get more data on this as it does make sense. Another issue to consider is that pre-diabetic individuals with fasting blood sugar levels between 100 and 126 tend to have higher levels of LDL. This could play into their increased risk of CAD as well.

Thanks for posting.

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