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dyslipidemias (treatments (lomitapide (MOA (image, summary: block MTP,…
dyslipidemias
treatments
nicotinic acid
Niacin
MOA
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summary: reduces VLDL in days, reduces LDL in weeks, best at increasing HDL
side effects
- rash and flushing (reduced with aspirin and controlled release), peptic ulcer, gout, hyperglycemia, liver toxicity, atach and afib.
lomitapide
MOA
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summary: block MTP, block formation of chylomicrons and VLDL, combination with others for HoFH
side effects
hepatotoxicity, contra. in pregnancy, metab. CYP3A4, GI adverse effects due to inhibition of fat absorb.
fibric acid derivatives
fibrates (gemfibrozil, fenofibrate)
MOA
summary: bind PPAPalpha, increase LPL, decrease VLDL (increase Apo C-II, decrease Apo C-III), increase HDL, may increase LDL.
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side effects
nausea, GI disturbances, liver dysfunction, flu-like, muscle aches (muscle toxicity due to increase in plasma muscle CPK).
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statins
lovastatin, simvastatin (prodrug), atorvastatin, fluvastatin, pravastatin, rosuvastatin.
MOA
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summary: inhibit HMG-CoA, decrease cholesterol, increase LDLR, increase clearance of LDL (doesn't help with cholesterol intake).
more potent statins like atorvastatin, fluvastatin, rosuvastatin
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side effects
increase liver enzymes, muscle toxicity (CPK), mitochondria toxicity, muscle toxicity with fibrates.
combo: statin + BASA
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MOA
BASA decrease cholesterol > compensatory effect > increase cholesterol > unsuccessful because statins block synthesis > greater LDLR
ezetimibe
MOA
summary: bind NPC1L1, block cholesterol absorption,
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mipomersen
MOA
summary: 10 antisense block Apo-B 100 synthesis, lower LDL and VLDL, combination with statins + ezetimibe + plasma apheresis to lower LDL in HoFH (also the only indication).
other info: NA salt, administered sc, high plasma protein binding to reduce renal clearance, half-life 1-2 months, no CYP
side effects
irritation at injection site, flu-like, increase ALT and liver fat
PCSK9 inhibitors
alirocumab, evolocumab
MOA
summary: antibodies block PCSK9, prevent lysosome from breaking down receptor, increase LDLR
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other info: no clear toxicity, much cheaper, combination with statins = 70% achieve <70 LDL level.
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