Antihyperlipidemics Flashcards
what are the two major lipids?
cholesterol and triglyceride
what do lipoproteins do?
transport cholesterol and triglycerides in blood
chylomicrons are made of mostly ____
triglycerides
VLDLs are made of mostly ___
triglycerides
LDLs are made of mostly ____
cholesterol
HDLs are made of mostly ___
proteins
Apo A-1
in HDL, reverse cholesterol transport
Apo B-100
in VLDL, IDL, LDL - is LDL receptor ligand and bad
Apo B-48
in chylomicrons - produced in intestine
Apo E
reverse cholesterol transport with HDL
Apo CII
in chylomicrons and VLDL
binds LPL to enhance TG lipolysis
LPL does what
breaks VLDL to LDL
HL does what
IDL to LDL
cholesterol synthesis pathway
acetoacetyl coa - HMG Coa - mevalonate - cholesterol
what ratio is key in assessing risk of CVD
total cholesterol to HDL
greater than 4.5 is increased risk CVD
hyperlipoproteinemia diseases
atherosclerosis, premature CAD, stroke
hypertriglyceridemia diseases
pancreatitis, xanthomas, CHD
MOA of bile acid resins
inhibit reabsorption of bile acids from intestine , up regulate LDL receptors in liver
bile acid resins side effects
constipation and bloating
bile acid resins drug interactions
acetaminophen, thiazides, ezetimibe, oral contraceptives, warfarin, digoxin, fibrates, TZDs, steroids
ezetimibe mechanism of action
inhibits cholesterol absorption from diet, inhibits NPC1L1
ezetimibe adverse effects
well tolerated, low incidence of muscle pain
statin mechanism of action
competitively inhibit HMG-CoA reductase the rate limiting step in cholesterol biosynthesis, upregulate LDL receptors so more hepatic uptake of LDL
HMG-CoA reductase inhibitors indications
hypercholesterolemia and after MI
prodrug statins
lovastatin and simvastatin