MicroRNAs that reduce cholesterol export from cells are encoded in the same genes that
increase cholesterol synthesis.
Coconut really throws the whole «marker» issue out of whack because it increases the energy state of the cell, which
increases cholesterol synthesis.»
Not exact matches
Their work laid the groundwork for drugs called statins that block
cholesterol synthesis,
increase LDL receptors, lower blood
cholesterol and prevent heart attacks.
Despite this possibility, mevinolin, the active ingredient in red yeast rice, is capable of reducing 7 - dehydrocholesterol levels, 22 and simvistatin (Zocor) not only inhibits the
synthesis of mevalonate but also enhances the conversion of 7 - dehydrocholesterol to
cholesterol by
increasing the expression of 7 - DHCR.23 Simvistatin thereby hits the pool of 7 - dehydrocholesterol with a double - whammy, both decreasing its
synthesis and
increasing its degradation.
Increased enterohepatic circulation on high fat means that
cholesterol is kept «in play» - bounced back into the bloodstream in ApoB particles - while low enterohepatic circulation, in people with with higher
synthesis rates, during weight loss - when
cholesterol is being dumped by shrinking cells - means that
cholesterol can pile up in the gall bladder faster than it can be conjugated to bile salts and bile acids and faster than it can be extracted by the weak stimulus of low fat food.
The second group will, I think, tend to see LDL drop if fasting because intracellular
cholesterol synthesis will drop faster than
cholesterol (re) absorption will
increase.
Needless to say the second group was hyperinsulinaemic and IR; insulin stimulates
cholesterol synthesis and inhibits (re) absorption, while glucagon has the opposite effect; enterohepatic bile cycling is
increased by glucagon.
For example the most powerful increaser of total
cholesterol is probably lauric acid, but lauric acid is also the most powerful reducer of the LDL - to - HDL -
cholesterol ratio — this is consistent with lauric acid being burned for quick energy, thus
increasing the energy state of the liver cell and allowing for greater
cholesterol synthesis.
[2] No surprises then that
cholesterol synthesis is found to be
increased in type 2 diabetes.
A key enzyme in
cholesterol biosynthesis is 3 - hydroxy -3-methylglutaryl — CoA reductase (the target for statins), which is activated by insulin, which means that an
increase in blood glucose and consequently of insulin levels will lead to
increased endogenous
cholesterol synthesis.