Well,
it inhibits cholesterol synthesis; that's nice.
Not exact matches
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.
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.
This complex
synthesis involves 37 steps and starts with a key enzyme known as HMG - CoA reductase (
inhibited by statins, a class of
cholesterol - lowering drugs).
Thus it makes sense, and helps to keep
cholesterol in balance with requirements, that
cholesterol synthesis is stimulated by insulin (the fed state hormone) and
inhibited by glucagon (the fasting state hormone).
They also
inhibit the
cholesterol - producing enzyme HMG - CoA reductase in the liver, which lowers LDL, and in other cells (including the brain) which can produce both benefits and harms (for example, this enzyme is also needed to make vitamin K2, which is important for sulfatide
synthesis in the brain and hence cognition).
Statins such as Lipitor, Zocor, Pavacol and Mevacor lower
cholesterol by
inhibiting HMG - CoA reductase, a key enzyme in
cholesterol synthesis.