|Trade names||Mevacor, Altocor, others|
|Other names||Monacolin K, Mevinolin|
|Metabolism||Hepatic (CYP3A and CYP2C8 substrate)|
|Elimination half-life||2–5 hours|
|Excretion||Faeces (83%), urine (10%)|
|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||404.547 g·mol−1|
|3D model (JSmol)|
Lovastatin, sold under the brand name Mevacor among others, is a statin medication, to treat high blood cholesterol and reduce the risk of cardiovascular disease. Its use is recommended together with lifestyle changes. It is taken by mouth.
Common side effects include diarrhea, constipation, headache, muscles pains, rash, and trouble sleeping. Serious side effects may include liver problems, muscle breakdown, and kidney failure. Use during pregnancy may harm the baby and use during breastfeeding is not recommended. It works by decreasing the livers ability to produce cholesterol by blocking the enzyme HMG-CoA reductase.
Lovastatin was patented in 1979 and approved for medical use in 1987. It is available as a generic medication. In 2017, it was the 84th most commonly prescribed medication in the United States, with more than nine million prescriptions. Lovastatin was not available in the United Kingdom as of 2009.
The primary uses of lovastatin is for the treatment of dyslipidemia and the prevention of cardiovascular disease. It is recommended to be used only after other measures, such as diet, exercise, and weight reduction, have not improved cholesterol levels.
Lovastatin is usually well tolerated, with the most common side effects being, in approximately descending order of frequency: creatine phosphokinase elevation, flatulence, abdominal pain, constipation, diarrhoea, muscle aches or pains, nausea, indigestion, weakness, blurred vision, rash, dizziness and muscle cramps. As with all statin drugs, it can rarely cause myopathy, hepatotoxicity (liver damage), dermatomyositis or rhabdomyolysis. This can be life-threatening if not recognised and treated in time, so any unexplained muscle pain or weakness whilst on lovastatin should be promptly mentioned to the prescribing doctor. Other uncommon side effects that should be promptly mentioned to either the prescribing doctor or an emergency medical service include:
- muscle pain, tenderness, or weakness
- lack of energy
- dark colored urine
- jaundice: yellowing of the skin or eyes
- pain in the upper right part of the stomach
- unusual bleeding or bruising
- loss of appetite
- flu-like symptoms
- difficulty breathing or swallowing
- swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
These less serious side effects should still be reported if they persist or increase in severity:
- memory loss or forgetfulness
Contraindications, conditions that warrant withholding treatment with lovastatin, include pregnancy, breast feeding, and liver disease. Lovastatin is contraindicated during pregnancy (Pregnancy Category X); it may cause birth defects such as skeletal deformities or learning disabilities. Due to its potential to disrupt infant lipid metabolism, lovastatin should not be taken while breastfeeding. Patients with liver disease should not take lovastatin.
As with atorvastatin, simvastatin, and other statin drugs metabolized via CYP3A4, drinking grapefruit juice during lovastatin therapy may increase the risk of side effects. Components of grapefruit juice, the flavonoid naringin, or the furanocoumarin bergamottin inhibit CYP3A4 in vitro, and may account for the in vivo effect of grapefruit juice concentrate decreasing the metabolic clearance of lovastatin, and increasing its plasma concentrations.
Mechanism of action
Lovastatin is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA reductase), an enzyme that catalyzes the conversion of HMG-CoA to mevalonate. Mevalonate is a required building block for cholesterol biosynthesis and lovastatin interferes with its production by acting as a reversible competitive inhibitor for HMG-CoA, which binds to the HMG-CoA reductase. Lovastatin is a prodrug, an inactive lactone in its native form, the gamma-lactone closed ring form in which it is administered, is hydrolysed in vivo to the β-hydroxy acid open ring form; which is the active form.
Lovastatin and other statins have been studied for their chemopreventive and chemotherapeutic effects. No such effects were seen in the early studies. More recent investigations revealed some chemopreventive and therapeutic effects, for certain types of cancer, especially in combination of statins with other anticancer drugs. It is likely that these effect are mediated by the properties of statins to reduce proteasome activity, leading to an accumulation of cyclin-dependent kinase inhibitors p21 and p27, and to subsequent G1-phase arrest, as seen in cells of different cancer lines.
Compactin and lovastatin, natural products with a powerful inhibitory effect on HMG-CoA reductase, were discovered in the 1970s, and taken into clinical development as potential drugs for lowering LDL cholesterol.
In 1982, some small-scale clinical investigations of lovastatin, a polyketide-derived natural product isolated from Aspergillus terreus, in very high-risk patients were undertaken, in which dramatic reductions in LDL cholesterol were observed, with very few adverse effects. After the additional animal safety studies with lovastatin revealed no toxicity of the type thought to be associated with compactin, clinical studies continued.
Large-scale trials confirmed the effectiveness of lovastatin. Observed tolerability continued to be excellent, and lovastatin was approved by the US FDA in 1987. It was the first statin approved by the FDA.
Lovastatin is also naturally produced by certain higher fungi, such as Pleurotus ostreatus (oyster mushroom) and closely related Pleurotus spp. Research into the effect of oyster mushroom and its extracts on the cholesterol levels of laboratory animals has been extensive, although the effect has been demonstrated in a very limited number of human subjects.
In 1998, the FDA placed a ban on the sale of dietary supplements derived from red yeast rice, which naturally contains lovastatin, arguing that products containing prescription agents require drug approval. Judge Dale A. Kimball of the United States District Court for the District of Utah, granted a motion by Cholestin's manufacturer, Pharmanex, that the agency's ban was illegal under the 1994 Dietary Supplement Health and Education Act because the product was marketed as a dietary supplement, not a drug.
The objective is to decrease excess levels of cholesterol to an amount consistent with maintenance of normal body function. Cholesterol is biosynthesized in a series of more than 25 separate enzymatic reactions that initially involves three successive condensations of acetyl-CoA units to form the six-carbon compound 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA). This is reduced to mevalonate and then converted in a series of reactions to the isoprenes that are building-blocks of squalene, the immediate precursor to sterols, which cyclizes to lanosterol (a methylated sterol) and further metabolized to cholesterol. A number of early attempts to block the synthesis of cholesterol resulted in agents that inhibited late in the biosynthetic pathway between lanosterol and cholesterol. A major rate-limiting step in the pathway is at the level of the microsomal enzyme that catalyzes the conversion of HMG CoA to mevalonic acid, and that has been considered to be a prime target for pharmacologic intervention for several years.
HMG CoA reductase occurs early in the biosynthetic pathway and is among the first committed steps to cholesterol formulation. Inhibition of this enzyme could lead to accumulation of HMG CoA, a water-soluble intermediate that is, then, capable of being readily metabolized to simpler molecules. This inhibition of reductase would lead to accumulation of lipophylic intermediates with a formal sterol ring.
Lovastatin was the first specific inhibitor of HMG CoA reductase to receive approval for the treatment of hypercholesterolemia. The first breakthrough in efforts to find a potent, specific, competitive inhibitor of HMG CoA reductase occurred in 1976, when Endo et al. reported the discovery of mevastatin, a highly functionalized fungal metabolite, isolated from cultures of Penicillium citrium.
The biosynthesis of lovastatin occurs via an iterative type I polyketide synthase (PKS) pathway. The six genes that encode enzymes that are essential for the biosynthesis of lovastatin are lovB, lovC, lovA, lovD, lovG, and lovF . The synthesis of dihydromonacolin L requires a total of 9-malonyl Coa . It proceeds in the PKS pathway until it reaches (E) a hexaketide, where it undergoes a Diels-Alder cycloaddition to form the fused rings. After cyclization it continues through the PKS pathway until it reaches (I) a nonaketide, which then undergoes release from LovB through the thioesterase encoded by LovG. Dihydromonacolin L, (J), then undergoes oxidation and dehydration via a cytochrome P450 oxygenase encoded by LovA to obtain monacolin J, (L).
The MT domain from lovB is active in the conversion of (B) to (C) when it transfers a methyl group from S-adenosyl-L-methionine (SAM) to the tetraketide (C) . Due to the fact that LovB contains an inactive ER domain, LovC is required at specific steps to obtain fully reduced products. The domain organization of LovB, LovC, LovG and LovF is shown in Figure 2. The inactive ER domain of lovB is shown with an oval and where LovC acts in trans to LovB is shown with a red box.
In a parallel pathway, the diketide side chain of lovastatin is synthesized by another highly reducing type I polyketide synthase enzyme encoded by LovF . Lastly, the side chain, 2-methylbutyrate (M) is covalently attached to C-8 hydroxy group of monacolin J (L) by a transesterase encoded by LovD to form lovastatin.
A major bulk of work in the synthesis of lovastatin was done by M. Hirama in the 1980s.  Hirama synthesized compactin and used one of the intermediates to follow a different path to get to lovastatin. The synthetic sequence is shown in the schemes below. The γ-lactone was synthesized using Yamada methodology starting with glutamic acid. Lactone opening was done using lithium methoxide in methanol and then silylation to give a separable mixture of the starting lactone and the silyl ether. The silyl ether on hydrogenolysis followed by Collins oxidation gave the aldehyde. Stereoselective preparation of (E,E)-diene was accomplished by addition of trans-crotyl phenyl sulfone anion, followed by quenching with Ac2O and subsequent reductive elimination of sulfone acetate. Condensation of this with lithium anion of dimethyl methylphosphonate gave compound 1. Compound 2 was synthesized as shown in the scheme in the synthetic procedure. Compounds 1 and 2 were then combined together using 1.3 eq sodium hydride in THF followed by reflux in chlorobenzene for 82 hr under nitrogen to get the enone 3.
Simple organic reactions were used to get to lovastatin as shown in the scheme.
Society and culture
Mevacor, Advicor (as a combination with niacin), Altocor, Altoprev
- Neuvonen, PJ; Backman, JT; Niemi, M (2008). "Pharmacokinetic comparison of the potential over-the-counter statins simvastatin, lovastatin, fluvastatin and pravastatin". Clinical Pharmacokinetics. 47 (7): 463–74. doi:10.2165/00003088-200847070-00003. PMID 18563955. S2CID 11716425.
- "Lovastatin Monograph for Professionals". Drugs.com. American Society of Health-System Pharmacists. Retrieved 3 March 2019.
- "Lovastatin Pregnancy and Breastfeeding Warnings". Drugs.com. Retrieved 3 March 2019.
- Fischer, Jnos; Ganellin, C. Robin (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 472. ISBN 9783527607495.
- "The Top 300 of 2020". ClinCalc. Retrieved 11 April 2020.
- "Lovastatin - Drug Usage Statistics". ClinCalc. Retrieved 11 April 2020.
- "Statins: updates to product safety information" (PDF). MHRA. November 2009. p. 2. Retrieved 3 March 2019.
- "Lovastatin". The American Society of Health-System Pharmacists. Retrieved 3 April 2011.
- "Mevacor, Altoprev (lovastatin) dosing, indications, interactions, adverse effects, and more". Medscape Reference. WebMD. Retrieved 17 March 2014.
- "Lovastatin". MedlinePlus. U.S. National Library of Medicine. 15 June 2012. Retrieved 1 December 2012.
- "Lovastatin". LactMed. U.S. National Library of Medicine. Retrieved 1 December 2012.
- Stöppler, Melissa. "Mevacor Side Effects Center". RxList. Retrieved 1 December 2012.
- Bailey DG, Malcolm J, Arnold O, Spence JD (1998). "Grapefruit juice-drug interactions". Br J Clin Pharmacol. 46 (2): 101–110. doi:10.1046/j.1365-2125.1998.00764.x. PMC 1873672. PMID 9723817.CS1 maint: multiple names: authors list (link)
- Kantola T, Kivistö KT, Neuvonen PJ (Apr 1998). "Grapefruit juice greatly increases serum concentrations of lovastatin and lovastatin acid". Clin Pharmacol Ther. 63 (4): 397–402. doi:10.1016/S0009-9236(98)90034-0. PMID 9585793.
- Alberts AW (1998). "Discovery, biochemistry and biology of lovastatin". The American Journal of Cardiology. 62 (15): 10J–15J. doi:10.1016/0002-9149(88)90002-1. PMID 3055919.
- Katz MS (2005). "Therapy insight: Potential of statins for cancer chemoprevention and therapy". Nature Clinical Practice Oncology. 2 (2): 82–9. doi:10.1038/ncponc0097. PMID 16264880. S2CID 9766310.
- Chae YK, Yousaf M, Malecek MK, Carneiro B, Chandra S, Kaplan J, Kalyan A, Sassano A, Platanias LC, Giles F (2015). "Statins as anti-cancer therapy; Can we translate preclinical and epidemiologic data into clinical benefit?". Discov Med. 20 (112): 413–27. PMID 26760985.CS1 maint: multiple names: authors list (link)
- Jakóbisiak M, Bruno S, Skierski J, Darzynkiewicz Z (1991). "The cell cycle specific effects of lovastatin". Proc Natl Acad Sci USA. 88 (9): 3628–3632. doi:10.1073/pnas.88.9.3628. PMC 51505. PMID 1673788.CS1 maint: multiple names: authors list (link)
- Rao S, Porter DC, Chen X, Herliczek T, Lowe M, Keyomarsi K (July 1999). "Lovastatin-mediated G1 arrest is through inhibition of the proteasome, independent of hydroxymethyl glutaryl-CoA reductase". Proc. Natl. Acad. Sci. U.S.A. 96 (14): 7797–802. doi:10.1073/pnas.96.14.7797. PMC 22141. PMID 10393901.
- Alarcón J, Aguila S, Arancibia-Avila P, Fuentes O, Zamorano-Ponce E, Hernández M (Jan–Feb 2003). "Production and purification of statins from Pleurotus ostreatus (Basidiomycetes) strains". Z Naturforsch C. 58 (1–2): 62–4. doi:10.1515/znc-2003-1-211. PMID 12622228. S2CID 29392568.
- Vederas JC, Moore RN, Bigam G, Chan KJ (1985). "Biosynthesis of the hypocholesterolemic agent mevinolin by Aspergillus terreus. Determination of the origin of carbon, hydrogen and oxygen by 13C NMR and mass spectrometry". J Am Chem Soc. 107 (12): 3694–701. doi:10.1021/ja00298a046.
- Alberts AW, Chen J, Kuron G, Hunt V, Huff J, Hoffman C, Rothrock J, Lopez M, Joshua H, Harris E, Patchett A, Monaghan R, Currie S, Stapley E, Albers-Schonberg G, Hensens O, Hirshfield J, Hoogsteen K, Liesch J, Springer J (July 1980). "Mevinolin: a highly potent competitive inhibitor of hydroxymethlglutaryl-coenzyme A reductase and a cholesterol-lowering agent". Proc Natl Acad Sci U S A. 77 (7): 3957–61. Bibcode:1980PNAS...77.3957A. doi:10.1073/pnas.77.7.3957. PMC 349746. PMID 6933445.
- FDA Orange Book Detail for application N019643 showing approval for 20 mg tablets on Aug 31, 1987 and 40 mg tablets on Dec 14, 1988
- Endo, Akira (Oct 2004). "The origin of the statins". Atheroscler. Suppl. 5 (3): 125–30. doi:10.1016/j.atherosclerosissup.2004.08.033. PMID 15531285.
- Bobek P, Ozdín L, Galbavý S (1998). "Dose- and time-dependent hypocholesterolemic effect of oyster mushroom (Pleurotus ostreatus) in rats". Nutrition. 14 (3): 282–6. doi:10.1016/S0899-9007(97)00471-1. PMID 9583372.
- Hossain S, Hashimoto M, Choudhury EK, et al. (July 2003). "Dietary mushroom (Pleurotus ostreatus) ameliorates atherogenic lipid in hypercholesterolaemic rats". Clin Exp Pharmacol Physiol. 30 (7): 470–5. doi:10.1046/j.1440-1681.2003.03857.x. PMID 12823261. S2CID 39632962.
- Bobek P, Galbavý S (October 1999). "Hypocholesterolemic and antiatherogenic effect of oyster mushroom (Pleurotus ostreatus) in rabbits". Nahrung. 43 (5): 339–42. doi:10.1002/(SICI)1521-3803(19991001)43:5<339::AID-FOOD339>3.0.CO;2-5. PMID 10555301.
- Opletal L, Jahodár L, Chobot V, et al. (December 1997). "Evidence for the anti-hyperlipidaemic activity of the edible fungus Pleurotus ostreatus". Br. J. Biomed. Sci. 54 (4): 240–3. PMID 9624732.
- Bajaj M, Vadhera S, Brar AP, Soni GL (October 1997). "Role of oyster mushroom (Pleurotus florida) as hypocholesterolemic/antiatherogenic agent". Indian J. Exp. Biol. 35 (10): 1070–5. PMID 9475042.
- Bobek P, Ozdín L, Kuniak L, Hromadová M (March 1997). "[Regulation of cholesterol metabolism with dietary addition of oyster mushrooms (Pleurotus ostreatus) in rats with hypercholesterolemia]". Cas. Lek. Cesk. (in Slovak). 136 (6): 186–90. PMID 9221192.
- Bobek P, Ozdín L, Kuniak L (August 1996). "Effect of oyster mushroom (Pleurotus Ostreatus) and its ethanolic extract in diet on absorption and turnover of cholesterol in hypercholesterolemic rat". Nahrung. 40 (4): 222–4. doi:10.1002/food.19960400413. PMID 8810086.
- Bobek P, Ozdín O, Mikus M (1995). "Dietary oyster mushroom (Pleurotus ostreatus) accelerates plasma cholesterol turnover in hypercholesterolaemic rat". Physiol Res. 44 (5): 287–91. PMID 8869262.
- Bobek P, Ozdin L, Kuniak L (1995). "The effect of oyster mushroom (Pleurotus ostreatus), its ethanolic extract and extraction residues on cholesterol levels in serum, lipoproteins and liver of rat". Nahrung. 39 (1): 98–9. doi:10.1002/food.19950390113. PMID 7898579.
- Bobek P, Ozdin L, Kuniak L (March 1994). "Mechanism of hypocholesterolemic effect of oyster mushroom (Pleurotus ostreatus) in rats: reduction of cholesterol absorption and increase of plasma cholesterol removal". Z Ernahrungswiss. 33 (1): 44–50. doi:10.1007/BF01610577. PMID 8197787. S2CID 41820928.
- Chorváthová V, Bobek P, Ginter E, Klvanová J (1993). "Effect of the oyster fungus on glycaemia and cholesterolaemia in rats with insulin-dependent diabetes". Physiol Res. 42 (3): 175–9. PMID 8218150.
- Bobek P, Ginter E, Jurcovicová M, Kuniak L (1991). "Cholesterol-lowering effect of the mushroom Pleurotus ostreatus in hereditary hypercholesterolemic rats". Ann. Nutr. Metab. 35 (4): 191–5. doi:10.1159/000177644. PMID 1897899.
- Khatun K, Mahtab H, Khanam PA, Sayeed MA, Khan KA (January 2007). "Oyster mushroom reduced blood glucose and cholesterol in diabetic subjects". Mymensingh Med J. 16 (1): 94–9. doi:10.3329/mmj.v16i1.261. PMID 17344789.
- McCarthy M (1998). "FDA bans red yeast rice product". The Lancet. 351 (9116): 1637. doi:10.1016/s0140-6736(05)77698-4. S2CID 54229753.
- Cholesterol Treatment Upheld, The New York Times, February 18, 1999
- Endo, Akira; Kuroda M.; Tsujita Y. (December 1976). "ML-236A, ML-236B, and ML-236C, new inhibitors of cholesterogenesis produced by Penicillium citrinium". Journal of Antibiotics. 29 (12): 1346–8. doi:10.7164/antibiotics.29.1346. PMID 1010803.
- Campbell, Chantel D.; Vederas, John C. (2010). "Biosynthesis of lovastatin and related metabolites formed by fungal iterative PKS enzymes". Biopolymers. 93 (9): 755–763. doi:10.1002/bip.21428. ISSN 1097-0282. PMID 20577995.
- W, Xu; Yh, Chooi; Jw, Choi; S, Li; Jc, Vederas; Na, Da Silva; Y, Tang (2013-06-17). "LovG: The Thioesterase Required for Dihydromonacolin L Release and Lovastatin Nonaketide Synthase Turnover in Lovastatin Biosynthesis". Angewandte Chemie International Edition in English. 52 (25): 6472–5. doi:10.1002/anie.201302406. PMC 3844545. PMID 23653178.
- Hirama M, Vet M (1982). "A chiral total synthesis of compactin". J. Am. Chem. Soc. 104 (15): 4251–4253. doi:10.1021/ja00379a037.
- Hirama M, Iwashita; Iwashita, Mitsuko (1983). "Synthesis of (+)-Mevinolin starting from Naturally occurring building blocks and using an asymmetry inducing reaction". Tetrahedron Lett. 24 (17): 1811–1812. doi:10.1016/S0040-4039(00)81777-3.
- Gunde-Cimerman, N; Cimerman, A (March 1995). "Pleurotus fruiting bodies contain the inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A reductase-lovastatin". Experimental Mycology. 19 (1): 1–6. doi:10.1006/emyc.1995.1001. PMID 7614366.
- Liu J, Zhang J, Shi Y, Grimsgaard S, Alraek T, Fønnebø V (2006). "Chinese red yeast rice (Monascus purpureus) for primary hyperlipidemia: a meta-analysis of randomized controlled trials". Chin Med. 1 (1): 4. doi:10.1186/1749-8546-1-4. PMC 1761143. PMID 17302963.
- Zhao ZJ, Pan YZ, Liu QJ, Li XH (2013). "Exposure assessment of lovastatin in Pu-erh tea". International Journal of Food Microbiology. 164 (1): 26–31. doi:10.1016/j.ijfoodmicro.2013.03.018. PMID 23587710.
- Hartig K, Beck E (2005). "Assessment of lovastatin application as tool in probing cytokinin-mediated cell cycle regulation". Physiologia Plantarum. 125 (2): 260–267. doi:10.1111/j.1399-3054.2005.00556.x.
Media related to Lovastatin at Wikimedia Commons
- "Lovastatin". Drug Information Portal. U.S. National Library of Medicine.