+ All Categories
Home > Documents > Artigo Lipid-Lowering Agents

Artigo Lipid-Lowering Agents

Date post: 04-Jun-2018
Category:
Upload: jorge-daniel
View: 222 times
Download: 0 times
Share this document with a friend

of 12

Transcript
  • 8/13/2019 Artigo Lipid-Lowering Agents

    1/12

    http://cpt.sagepub.com/Therapeutics

    Journal of Cardiovascular Pharmacology and

    http://cpt.sagepub.com/content/18/5/401Theonline version of this article can be foundat:

    DOI: 10.1177/1074248413492906

    2013 18: 401 originally published online 27 June 2013J CARDIOVASC PHARMACOL THERMfon Ewang-Emukowhate and Anthony S. Wierzbicki

    Lipid-Lowering Agents

    Published by:

    http://www.sagepublications.com

    can be found at:Journal of Cardiovascular Pharmacology and TherapeuticsAdditional services and information for

    http://cpt.sagepub.com/cgi/alertsEmail Alerts:

    http://cpt.sagepub.com/subscriptionsSubscriptions:

    http://www.sagepub.com/journalsReprints.navReprints:

    http://www.sagepub.com/journalsPermissions.navPermissions:

    What is This?

    - Jun 27, 2013OnlineFirst Version of Record

    - Aug 12, 2013Version of Record>>

    at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from at b-on: 01100 Universidade do Porto on September 27, 2013cpt.sagepub.comDownloaded from

    http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/content/18/5/401http://cpt.sagepub.com/content/18/5/401http://cpt.sagepub.com/content/18/5/401http://www.sagepublications.com/http://cpt.sagepub.com/cgi/alertshttp://cpt.sagepub.com/cgi/alertshttp://cpt.sagepub.com/subscriptionshttp://www.sagepub.com/journalsReprints.navhttp://www.sagepub.com/journalsReprints.navhttp://www.sagepub.com/journalsPermissions.navhttp://online.sagepub.com/site/sphelp/vorhelp.xhtmlhttp://online.sagepub.com/site/sphelp/vorhelp.xhtmlhttp://cpt.sagepub.com/content/early/2013/06/26/1074248413492906.full.pdfhttp://cpt.sagepub.com/content/18/5/401.full.pdfhttp://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://cpt.sagepub.com/http://online.sagepub.com/site/sphelp/vorhelp.xhtmlhttp://cpt.sagepub.com/content/early/2013/06/26/1074248413492906.full.pdfhttp://cpt.sagepub.com/content/18/5/401.full.pdfhttp://www.sagepub.com/journalsPermissions.navhttp://www.sagepub.com/journalsReprints.navhttp://cpt.sagepub.com/subscriptionshttp://cpt.sagepub.com/cgi/alertshttp://www.sagepublications.com/http://cpt.sagepub.com/content/18/5/401http://cpt.sagepub.com/
  • 8/13/2019 Artigo Lipid-Lowering Agents

    2/12

    Cardiovascular Pharmacology Core Review

    Lipid-Lowering Agents

    Mfon Ewang-Emukowhate, MBBS, MRCP, Dip RCPath1

    and Anthony S. Wierzbicki, DM, DPhil, FRCPath, FAHA1

    Abstract

    The role of lipid lowering in reducing the risk of mortality and morbidity from cardiovascular disease (CVD) is well established.Treatment particularly aimed at decreasing low-density lipoprotein cholesterol (LDL-C) is effective in reducing the risk of death

    from coronary heart disease and stroke. Statins form the cornerstone of treatment. However, in some individuals with a high riskof CVD who are unable to achieve their target LDL-C due to either intolerance or lack of efficacy, there is the need for alternativetherapies. This review provides an overview of the different classes of currently available lipid-lowering medications includingstatins, fibrates, bile acid sequestrants (resins), and omega-3 fatty acids. Data are presented on their indications, pharmacology,and the relevant end point clinical trial data with these drugs. It also discusses the human trial data on some novel therapeutic

    agents that are being developed including those for homozygous familial hypercholesterolemiathe antisense oligonucleotidemipomersen and the microsomal transfer protein inhibitor lomitapide. Data are presented on phase II and III trials on agents with

    potentially wider applications, cholesterol ester transfer protein inhibitors and proprotein convertase subtilisin kexin 9 inhibitors.The data on a licensed gene therapy for lipoprotein lipase deficiency are also presented.

    Keywords

    cardiovascular disease, lipid lowering, dyslipidemia, statin, fibrate, bile acid sequestrant

    Introduction

    Dyslipidemia is one of the risk factors for progression of ather-

    osclerotic disease which may account for up to 55% of the

    cardiovascular disease (CVD) risk after correction for age and

    gender.1 Epidemiological and prospective studies have estab-

    lished the benefit of reducing low-density lipoprotein choles-

    terol (LDL-C), with a 1% reduction associated with a 1%

    decrease in CVD events.2 Alternatively, a 40 mg/dL (1

    mmol/L) reduction in LDL-C is associated with a 21% reduc-

    tion in major CVD events.3 In the Helsinki heart study, a 1%

    increase in high-density lipoprotein cholesterol (HDL-C) is

    linked with a 3% reduction in cardiovascular events.4 The

    effects of high triglycerides (TGs), TG-rich lipoprotein rem-

    nants, and very LDLs (VLDLs) are uncertain,5,6 but they are

    also associated with increased CVD risk through the effects

    on HDL and LDL particle sizes increasing the atherogenicity

    of LDL.7,8

    There are different guidelines with practical recommenda-

    tions on the management of dyslipidemia. Lifestyle modifica-

    tion that includes dietary changes, weight reduction, exercise,

    decreased alcohol consumption, and smoking cessation is

    important in the management of hyperlipidemia.2 However,

    in certain patients who have a high risk of CVD, the addition

    of drug therapy will be necessary to achieve beneficial effects.

    Lipid-lowering agents in current use are generally effective,

    but some are limited by their side effects. Statins are the first

    choice lipid-lowering drugs given their almost universal

    efficacy for CVD.3 However, only 50% of the high-risk

    patients attain LDL-C targets with statins,9 and the role of addi-

    tional lipid-lowering therapies remains unclear.10 Hence, there

    is a need for development of new therapeutic agents aimed atthose who cannot achieve current targets or who are intolerant

    to most or all of the existing therapies.

    Currently Available Lipid-Lowering

    Therapies

    Statins

    Statins inhibit 2-hydroxyl-methyl-glutaryl coenzyme A (HMG-

    CoA) reductase, the rate-limiting step in cholesterol synth-

    esis.11,12 This leads to a reduced intracellular cholesterol

    concentration and subsequent upregulation of LDL receptors

    that encourages the removal of LDL-C from the circulation.

    Mevastatin, the first statin produced, was a fungal

    1 Department of Chemical Pathology, Guys & St Thomas Hospitals, St Thomas

    Hospital Campus, London, England

    Manuscript submitted: April 19, 2013; accepted:May 14, 2013.

    Corresponding Author:

    Mfon Ewang-Emukowhate, Department of Chemical Pathology, Guys & St

    Thomas Hospitals, St Thomas Hospital, Lambeth Palace Road, London SE1

    7EH, England.

    Email: [email protected]

    Journal of Cardiovascular

    Pharmacology and Therapeutics

    18(5) 401-411

    The Author(s) 2013

    Reprints and permission:

    sagepub.com/journalsPermissions.nav

    DOI: 10.1177/1074248413492906

    cpt.sagepub.com

    http://www.sagepub.com/journalsPermissions.navhttp://cpt.sagepub.com/http://cpt.sagepub.com/http://www.sagepub.com/journalsPermissions.nav
  • 8/13/2019 Artigo Lipid-Lowering Agents

    3/12

  • 8/13/2019 Artigo Lipid-Lowering Agents

    4/12

  • 8/13/2019 Artigo Lipid-Lowering Agents

    5/12

  • 8/13/2019 Artigo Lipid-Lowering Agents

    6/12

  • 8/13/2019 Artigo Lipid-Lowering Agents

    7/12

  • 8/13/2019 Artigo Lipid-Lowering Agents

    8/12

    Table3.(continued)

    Drug

    Dosage

    Indication

    Contraindication

    andCaution

    AdverseEffects

    DrugInteractions

    orasmonotherapyif

    statinintolerance

    av

    oidinpregnancyand

    br

    eastfeeding,insevereliver

    disease;caution:acute

    co

    ronarysyndrome,diabetes

    m

    ellitus,gout,historyofpeptic

    ulcer,renalimpairment,

    discontinueifsevere

    ab

    normalitiesinliverfunction

    te

    st

    pruritus,rash.

    Lesscommon

    palpitations,headache,

    dizziness,hypotension,

    syncope,reducedglucose

    toler

    ance,andmyalgia

    O

    mega-3-fattyacidcompounds

    Omega-3acid

    ethylesters

    1gtoamaximumof

    4gdependingon

    preparation

    Inhypertriglyceridemia,in

    combinationwitha

    statininmixed

    hyperlipidemiaor

    secondaryprevention

    notadequately

    controlledwithstatin

    Con

    traindication:avoidin

    pr

    egnancy,noclear

    information;caution:

    he

    morrhagicdisorders,

    an

    ticoagulanttreatment

    Gastro

    intestinaldisturbances,

    lessc

    ommon,tastedisorder,

    hype

    rsensitivityreactions,

    head

    ache,hyperglycemia,

    hepa

    ticdisorders

    Omega-3-marine

    TGs

    1gtoamaximumof

    5gcapsules,5to

    10mlofliquid

    formulation

    dependingon

    preparation

    Inhypertriglyceridemia,in

    combinationwithstatin

    insevere

    hypertriglyceridemia

    Con

    traindication:avoidin

    pr

    egnancy,noclear

    information;caution:

    he

    morrhagicdisorders,

    an

    ticoagulanttreatment,

    as

    pirinsensitiveasthma,type2

    diabetes

    Occasionalnauseaand

    belching

    407

  • 8/13/2019 Artigo Lipid-Lowering Agents

    9/12

    Bile Acid Sequestrants

    Cholesterol is secreted into the gut through the biliary system

    and directly through the action of perilipin in enterocytes in the

    ileum.28 Bile acid sequestrants decrease LDL-C by binding to

    bile acids in the gut and preventing their reabsorption leading

    to decreased enterohepatic concentration of bile acids and cho-

    lesterol. The decreased level of bile acids stimulates upregula-

    tion of hepatic LDL receptors leading to increased LDL-C

    clearance from the circulation. They increase HDL-C by 3%

    to 5% and increase TG levels by stimulating hepatic VLDL

    production through its action on the liver-X receptor.29 Bile

    acid sequestrants also reduce blood glucose through their effect

    on the farnesoid-X receptor. Cholestyramine, colestipol, and

    colesevelam are currently available therapies, and colesevelam

    has been shown to decrease hemoglobin A1cby 0.4% to 0.6%

    and is thus also licensed for glycemic control.30 Colesevelam

    decreases LDL-C by about 16% to 19%, and combination with

    statins produces a greater than 40% decrease.29 Some end point

    evidence exists for the use of bile acid sequestrants. In the Lipid

    Research Clinics trial, cholestyramine decreased CVD events

    by 25% (Table 2).31 The use of these agents is limited by their

    frequent gastrointestinal side effects. They interfere with the

    absorption of micronutrients such as vitamin A, D, E, K, iron,

    folic acid, and magnesium. They also reduce the absorption of

    medications such as warfarin and to a lesser extent thiazide

    diuretics and digoxin.30

    Niacin/Nicotinic Acid

    Niacin or vitamin B3 is the oldest lipid-lowering therapy. Itsmode of action is still not entirely clear, but it has favorable

    effects on all aspects of an abnormal lipid profile.32,33 It

    decreases VLDL and TG synthesis in the liver by inhibiting

    diacylglycerol O-acyltransferase 2 (DGAT-2) and hormone-

    sensitive lipase activity.33 The LDL-C is decreased by

    increased catabolism of apolipoprotein B (apo B) and TG lev-

    els are decreased by niacin, leading to increased LDL particle

    size and decreased LDL particle number. Niacin increases

    HDL-C by promoting production of apolipoprotein A-1 and

    reducing its clearance through the ATP synthaseb-chain holo-

    particle receptor. Niacin monotherapy reduced the CVD risk by

    22% in the Coronary Drug Project (Table 2).34 It, unlike ezeti-

    mibe, also leads to significant regression of carotid intima

    media thickness when combined with statin therapy as

    demonstrated by the Arterial Biology for the Investigation of

    the Treatment Effects of Reducing Cholesterol 6-HDL and

    LDL Treatment Strategies in Atherosclerosis (ARBITER 6-

    HALTS) trial.35 The use of niacin is limited by flushing due

    to increased prostaglandin D2 synthesis. Niacin treatment is

    also associated with increased rates of new diabetes and dete-

    rioration in glycemic control.36,37 End point studies of niacin

    combined with statins have been disappointing. In the Athero-

    thrombosis Intervention in Metabolic Syndrome with Low

    HDL/High Triglycerides: Impact on Global Health Outcomes

    (AIM-HIGH) study, patients with established high CVD risk

    and dyslipidemia where secondary optimization of LDL-C was

    allowed, extended release (ER) of niacin did not reduce CVD

    events.38 The Heart Protection Study-2/Treatment of HDL to

    Reduce the Incidence of Vascular Events (HPS-2/THRIVE)

    study investigated the effect of the combination of niacin and

    laropiprant (Tredaptive) with a statin on CVD events in

    patients at high risk of CVD after initial optimization ofLDL-C levels.10,37 Niacinlaropiprant failed to show any sig-

    nificant reduction in CVD events but showed an increased inci-

    dence of nonfatal side effects, and it has since been withdrawn.

    Ezetimibe

    Ezetimibe inhibits cholesterol absorption through inhibition of

    the duodenal Niemann-Pick C1-like protein.39 In combination

    with statin therapy, it decreases LDL-C although its effect in

    reducing cardiovascular events is controversial. Studies of add-

    ing ezetimibe to statins in familial hypercholesterolemia (FH)

    such as ezetimibe and Simvastatin in HypercholesterolaemiaEnhances Artherosclerosis Regression (ENHANCE) of carotid

    intima-media thickness40 and of combination therapy on CVD

    events in the underpowered Simvastatin and Ezetimibe in

    Aortic Stenosis (SEAS)41 have not shown any beneficial effect.

    Recently, in the Study of Heart And Renal Protection (SHARP)

    combination therapy with statin reduced CVD events by 27%

    in patients with advanced renal failure.42 Some small studies

    have suggested ezetimibe may improve hepatic steatosis.39

    Ezetimibe is generally well tolerated but can cause nausea or

    bloating. The outcome data on the effect of ezetimibe and sim-

    vastatin combination therapy in reducing the risk of CVD in

    patients with acute coronary syndrome in the IMProved Reduc-tion of Outcomes: Vytorin Efficacy International Trial

    (IMPROVE-IT) study are still awaited.10

    Omega-3 Fatty Acids

    Omega-3 fatty acids that include docosahexaenoic acid and

    eicosapentaenoic acid (EPA) have been shown to decrease

    CVD events in monotherapy in patients with CVD or at high

    risk of developing CVD.43,44 However, individual studies

    examining the CVD effect of omega-3 fatty acids have shown

    conflicting results with early studies being positive and later

    studies negative. Meta-analyses of omega-3 fatty acids added

    to optimal statin therapy suggest they give no added

    benefit.45 Their mechanism of action is complex and not fully

    understood, but it may involve the regulation of genes involved

    in lipid metabolism. They are known to reduce TGs in a dose-

    dependent manner. In the Multi-center plAcebo-controlled

    Randomised double-blINd 12-week study with an open label

    extension (MARINE; AMR-101; Amarin Pharmaceuticals,

    Dublin, Eire), an EPA preparation has been shown in patients

    with high TGs (>750 mg/dL; 8.5 mmol/L) to reduce TGs by

    33% to 45%.46 The suggested mechanism for TG reduction

    includes suppression of lipogenesis, decreased TG synthesis

    through inhibition of DGAT-2 and increased beta-oxidation

    in the mitochondria.44 They are well tolerated with mild

    408 Journal of Cardiovascular Pharmacology and Therapeutics 18(5)

  • 8/13/2019 Artigo Lipid-Lowering Agents

    10/12

    gastrointestinal disturbance being the most commonly reported

    adverse symptom.46

    New Therapies for Dyslipidemia

    Statins remain the cornerstone of drug-based lipid managementallied with lifestyle changes such as dietary modification,

    weight reduction, and exercise. However, if the desired level

    of LDL-C is not achieved with statins even after titration to the

    highest tolerable dose, then other treatment options may need

    to be considered. A considerable number of new therapies for

    dyslipidemia are in development (Table 4).47,48 New lipid-

    lowering therapies can be classified based on their role, either

    as LDL-C reducing agents or as drugs that target other lipids

    such as HDL-C or TGs.

    LDL-cholesterol-Lowering Therapies

    Patients with heterozygous FH respond to statin and ezetimibe

    therapy, but statins show reduced or absent efficacy in patients

    with homozygous FH who do not have functioning LDL recep-

    tors. Novel treatments to reduce LDL-C include drugs with a

    primary license indication for orphan disorders such as homo-

    zygous FH and drugs that interfere with the production of

    VLDL and hence LDL either through disruption of apoB synth-

    esis or through interference with transfer factors involved in

    loading lipids onto the nascent particle. Mipomersen is an anti-

    sense oligonucleotide to apoB which reduces LDL-C by 25% in

    homozygous FH but is limited by injection site reactions and

    hepatic steatosis.49 Lomitapide is a microsomal transfer protein

    inhibitor50 which reduces LDL-C by 50% but causes hepatic

    steatosis.51 The side effects of these drugs restrict them at the

    moment to orphan indications.

    Other novel agents reduce LDL-C by inhibiting pro-protein

    convertase subtilisin kexin 9 (PCSK-9), a plasma and hepato-

    cellular protein that controls LDL receptor expression.52 Anti-

    bodies to PCSK-9 deliver up to 70% reduction in LDL-C whenadded to other therapies or in statin-intolerant patients and may

    have a large potential application in patients with CVD. Large-

    scale CVD end point trials of adding these agents to optimal

    LDL-C-lowering strategies are just beginning.

    HDL-C Raising Drugs

    Statins do not address all lipid-related CVD risk. Epidemiolo-

    gical studies show that higher HDL-C is associated with a bet-

    ter prognosis even after statin treatment. Some of this residual

    risk is ascribed to HDL.7,53 The newest agents that raise HDL-

    C are cholesterol ester transfer protein (CETP) inhibitors.

    48

    These can raise HDL-C by 30% to 100% and reduce LDL-C

    by 0% to 40%. The original compound in the class torcetrapib

    was highly effective in improving lipid profiles but increased

    CVD events by 30%, possibly by raising blood pressure.54 Dal-

    cetrapib raised HDL-C by 30%but had no effect on LDL-C and

    in reducing CVD events.55 Two other CETP inhibitors

    anacetrapib and evacetrapibthat raise HDL-C and also

    reduce LDL-C by 40% remain in development.

    Gene Therapy for Lipid Disorders

    Initial attempts at gene therapy for homozygous FH were

    unsuccessful. More recently, the development of adeno-

    Table 4. Summary of Major Trials on Novel Cholesterol-Lowering Therapies.

    DrugStudyType Participants

    Dose and Routeof Administration

    Effects on Lipid Profile (%)

    Adverse EffectsT CHOL LDL-C HDL-C TG

    ApoB 100 inhibitorsMipomersen Phase III 51 (M 22,

    F 29)

    200 mg

    weekly, SC

    21 25 2 17 Injection site reactions, raised

    ALT 3ULN in 4 patientsPCSK-9 inhibitors

    AMG 145 Phase II 157 (M 57,F 100)

    280-420 mg, SC (30-44) (41-63) (6-7) Myalgia. Otherwisewell-tolerated

    SAR236553/REGN727 Phase II 183 (M 87,F 96)

    50-300 mg, SC (23-45) (40-72) (4-9) (6-19) Mild injection site reactions,1 case of leukocytoclasticvasculitis

    MTP inhibitorsLomitapide Phase III 29 (M 16,

    F 13)5-60 mg, PO 46 50 12 45 Raised ALT 3 ULN in 10

    patients,increased hepatic fatCETP inhibitors

    Anacetrapib Phase II 1 623 (M 1247,F 376)

    100 mg, PO 44 146 7 Compared to placebo nochange in BP, electrolytesor aldosterone

    Evacetrapib Phase II 156 (M 76,F 86 30-500 mg, PO (14-36) (54-129) (3-11) Well tolerated, no rise in BP,or changes inglucocorticoid ormineralocorticoid activity

    Abbreviation: ALT, alanine transaminases; AMG, alpha 2-macroglobulin; ApoB, apolipoprotein B; BP, blood pressure; CETP, cholesterol ester transfer protein;F, female; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; M, male; MTP, microsomal transfer protein; PCSK-9,pro-protein convertase subtilisin kexin 9; PO, perioral; SC, subcutaneous; T CHOL, total cholesterol; TG, triglyceride; ULN, upper limit of the normal range.

    Ewang-Emukowhate and Wierzbicki 409

  • 8/13/2019 Artigo Lipid-Lowering Agents

    11/12

    associated viral vectors has led to the development of a gene

    therapy for lipoprotein lipase deficiency (LPLD).56 The LPLD

    is associated with severe hypertriglyceridemia and pancreatitis,

    and there is no treatment for homozygotes apart from a highly

    fat-restricted diet. Treatment with alipogene tiparvovec transi-

    ently reduces TGs in patients with LPLD but does reduce the

    frequency of pancreatitis by 80%.

    Conclusion

    Many therapies that reduce LDL-C have been proven to reduce

    CVD risk in monotherapy. Statins remain as first-line treat-

    ment, and they are safe. Combination therapy with other cur-

    rently used lipid-lowering drugs such as niacin and ezetimibe

    has not shown beneficial effects in CVD risk reduction. Despite

    the efficacy of statins in LDL-C lowering there still remains a

    residual risk of CVD, and it is important that this is addressed.

    Newer therapies are being developed to further reduce LDL-C.

    Some have been disappointing with respect to their safety and

    tolerability profiles. The PCSK-9 inhibitors and CETP inhibi-

    tors anacetrapib and evacetrapib appear promising. These

    newer agents can be used as alternatives to statins in patients

    who are statin intolerant, or they can be used in combination

    therapy to help achieve LDL-C targets, especially in high-

    risk individuals thereby reducing the risk of CVD. As noted

    with torcetrapib, LDL-C lowering is not always associated with

    CVD risk reduction. Therefore, these new lipid-lowering thera-

    pies should provide evidence of improved CVD outcome.

    Safety and efficacy data in large clinical trials will ascertain the

    benefits of these agents.

    Declaration of Conflicting Interests

    The author(s) declared no potential conflicts of interest with respect to

    the research, authorship, and/or publication of this article.

    Funding

    The author(s) received no financial support for the research, author-

    ship, and/or publication of this article.

    References

    1. Yusuf S, Hawken S, Ounpuu S, et al. Effect of potentially modifi-

    able risk factors associated with myocardial infarction in 52 coun-

    tries (the INTERHEART study): case-control study. Lancet.

    2004;364(9438):937-952.

    2. Expert Panel on Detection, Evaluation, and Treatment of High

    Blood Cholesterol in Adults. Executive Summary of the Third

    Report of the National Cholesterol Education Program (NCEP)

    Expert Panel on Detection, Evaluation, and Treatment of High

    Blood Cholesterol in Adults (Adult Treatment Panel III).JAMA.

    2001;285(19):2486-2497.

    3. Baigent C, Blackwell L, Emberson J, et al. Efficacy and safety of

    more intensive lowering of LDL cholesterol: a meta-analysis of

    data from 170,000 participants in 26 randomised trials. Lancet.

    2010;376(9753):1670-1681.

    4. Sacks FM. The role of high-density lipoprotein (HDL) cholesterol

    in the prevention and treatment of coronary heart disease: expert

    group recommendations. Am J Cardiol. 2002;90(2):139-1343.

    5. Sarwar N, Sandhu MS, Ricketts SL, et al. Triglyceride-mediated

    pathways and coronary disease: collaborative analysis of 101

    studies.Lancet. 2010;375(9726):1634-1639.

    6. Di Angelantonio E, Sarwar N, Perry P, et al. Major lipids, apoli-poproteins, and risk of vascular disease. JAMA. 2009;302(18):

    1993-2000.

    7. Chapman MJ, Ginsberg HN, Amarenco P, et al. Triglyceride-rich

    lipoproteins and high-density lipoprotein cholesterol in patients at

    high risk of cardiovascular disease: evidence and guidance for

    management.Eur Heart J. 2011;32(11):1345-1361.

    8. Mikhailidis DP, Elisaf M, Rizzo M, et al. European panel on low

    density lipoprotein (LDL) subclasses: a statement on the patho-

    physiology, atherogenicity and clinical significance of LDL sub-

    classes.Curr Vasc Pharmacol. 2011;9(5):533-571.

    9. Santos RD, Waters DD, Tarasenko L, et al. A comparison of non-

    HDL and LDL cholesterol goal attainment in a large, multina-tional patient population: the Lipid Treatment Assessment Project

    2.Atherosclerosis. 2012;224(1):150-153.

    10. Wierzbicki AS. All at sea: new lipid-lowering drug trials continue

    to disappoint. Int J Clin Pract. In press.

    11. Wierzbicki AS, Poston R, Ferro A. The lipid and non-lipid effects

    of statins. Pharmacol Ther. 2003;99(1):95-112.

    12. Steinberg D. Thematic review series: the pathogenesis of athero-

    sclerosis. An interpretive history of the cholesterol controversy,

    part V: the discovery of the statins and the end of the controversy.

    J Lipid Res.2006;47(7):1339-1351.

    13. Jones PH, Davidson MH, Stein EA, et al. Comparison of the effi-

    cacy and safety of rosuvastatin versus atorvastatin, simvastatin,

    and pravastatin across doses (STELLAR* Trial). Am J Cardiol.

    2003;92(2):152-160.

    14. Jones P, Kafonek S, Laurora I, Hunninghake D. Comparative dose

    efficacy study of atorvastatin versus simvastatin, pravastatin,

    lovastatin, and fluvastatin in patients with hypercholesterolemia

    (the CURVES study).Am J Cardiol. 1998;81(5):582-587.

    15. Betteridge J. Pitavastatinresults from phase III & IV. Atheros-

    cler Suppl. 2010;11(3):8-14.

    16. Law MR, Wald NJ, Thompson SG. By how much and how

    quickly does reduction in serum cholesterol concentration lower

    risk of ischaemic heart disease?BMJ. 1994;308(6925):367-372.

    17. Stein EA, Lane M, Laskarzewski P. Comparison of statins in

    hypertriglyceridemia.Am J Cardiol. 1998;81(4A):66B-69B.

    18. Armitage J. The safety of statins in clinical practice.Lancet. 2007;

    370(9601):1781-1790.

    19. Joy TR, Hegele RA. Narrative review: statin-related myopathy.

    Ann Intern Med. 2009;150(12):858-868.

    20. Sattar N, Preiss D, Murray HM, et al. Statins and risk of incident

    diabetes: a collaborative meta-analysis of randomised statin trials.

    Lancet. 2010;375(9716):735-742.

    21. Lalloyer F, Staels B. Fibrates, glitazones, and peroxisome

    proliferator-activated receptors. Arterioscler Thromb Vasc Biol.

    2010;30(5):894-899.

    22. Wierzbicki AS. FIELDS of dreams, fields of tears: a perspective

    on the fibrate trials. Int J Clin Pract. 2006;60(4):442-449.

    410 Journal of Cardiovascular Pharmacology and Therapeutics 18(5)

  • 8/13/2019 Artigo Lipid-Lowering Agents

    12/12

    23. Saha SA, Kizhakepunnur LG, Bahekar A, Arora RR. The role of

    fibrates in the prevention of cardiovascular diseasea pooled

    meta-analysis of long-term randomized placebo-controlled clini-

    cal trials. Am Heart J. 2007;154(5):943-953.

    24. Jun M, Foote C, Lv J, et al. Effects of fibrates on cardiovascular

    outcomes: a systematic review and meta-analysis. Lancet. 2010;

    375(9729):1875-1884.25. Idzior-Walus B, Sieradzki J, Rostworowski W, et al. Effects of

    comicronised fenofibrate on lipid and insulin sensitivity in

    patients with polymetabolic syndrome X. Eur J Clin Invest.

    2000;30(10):871-878.

    26. Ginsberg HN, Elam MB, Lovato LC, et al. Effects of combination

    lipid therapy in type 2 diabetes mellitus. N Engl J Med. 2010;

    362(17):1563-1574.

    27. Franssen R, Vergeer M, Stroes ES, Kastelein JJ. Combination

    statin-fibrate therapy: safety aspects. Diabetes Obes Metab.

    2009;11(2):89-94.

    28. Abumrad NA, Davidson NO. Role of the gut in lipid homeostasis.

    Physiol Rev. 2012;92(3):1061-1085.29. Manghat P, Wierzbicki AS. Colesevelama specifically engi-

    neered bile acid sequestrant.Future Lipidol. 2008;3(3):237-255.

    30. Jialal I, Abby SL, Misir S, Nagendran S. Concomitant reduction

    in low-density lipoprotein cholesterol and glycated hemoglobin

    with colesevelam hydrochloride in patients with type 2 diabetes:

    a pooled analysis. Metab Syndr Relat Disord. 2009;7(3):

    255-258.

    31. The Lipid Research Clinics (LRC) Coronary Primary Prevention

    Trial Investigators. The Lipid Research Clinics Coronary Primary

    Prevention Trial results. I. Reduction in incidence of coronary

    heart disease. JAMA. 1984;251(3):351-364.

    32. Carlson LA. Nicotinic acid: the broad-spectrum lipid drug. A 50th

    anniversary review. J Intern Med. 2005;258(2):94-114.

    33. Wierzbicki AS. Niacin: the only vitamin that reduces cardiovas-

    cular events. Int J Clin Pract. 2011;65(4):379-385.

    34. The Coronary Drug Project Research Group. Clofibrate and nia-

    cin in coronary heart disease.JAMA. 1975;231(4):360-381.

    35. Taylor AJ, Villines TC, Stanek EJ, et al. Extended-release niacin

    or ezetimibe and carotid intima-media thickness. N Engl J Med.

    2009;361(22):2113-2122.

    36. Sazonov V, Maccubbin D, McCrary Sisk C, Canner PL. Effects of

    niacin on the incidence of new onset diabetes and cardiovascular

    events in patients with normoglycemia and impaired fasting glu-

    cose.Int J Clin Pract. 2013;67(4): 297-302.

    37. Micheal ORiordan If not dead, not healthy: Niacin full results

    in HPS2-THRIVE aired at ACC; 2013. http://www.theheart.org/

    article/1515533.do. Accessed March 11, 2013.

    38. Boden WE, Probstfield JL, Anderson T, et al. Niacin in patients

    with low HDL cholesterol levels receiving intensive statin ther-

    apy.N Engl J Med. 2011;365(24):2255-2267.

    39. Wierzbicki AS. The ezetimibe Jonah: the trials and tribulations of

    an unlucky drug. Int J Clin Pract. 2011;65(12):1207-1208.

    40. Kastelein JJ, Akdim F, Stroes ES, et al. Simvastatin with or with-

    out ezetimibe in familial hypercholesterolemia. N Engl J Med.

    2008;358(14):1431-1443.

    41. Rossebo AB, Pedersen TR, Boman K, et al. Intensive lipid lower-

    ing with simvastatin and ezetimibe in aortic stenosis. N Engl J

    Med. 2008;359(13):1343-1356.

    42. Baigent C, Landray MJ, Reith C, et al. The effects of lowering LDL

    cholesterol with simvastatin plus ezetimibe in patients with chronic

    kidney disease (Study of Heart and Renal Protection): a randomised

    placebo-controlled trial.Lancet. 2011;377(9784):2181-2192.43. Wierzbicki AS. A fishy business: omega-3 fatty acids and cardi-

    ovascular disease.Int J Clin Pract. 2008;62(8):1142-1146.

    44. Harris WS, Miller M, Tighe AP, Davidson MH, Schaefer EJ.

    Omega-3 fatty acids and coronary heart disease risk: clinical and

    mechanistic perspectives. Atherosclerosis. 2008;197(1):12-24.

    45. Kwak SM, Myung SK, Lee YJ, Seo HG. Efficacy of omega-3

    fatty acid supplements (eicosapentaenoic acid and docosahexae-

    noic acid) in the secondary prevention of cardiovascular disease:

    a meta-analysis of randomized, double-blind, placebo-controlled

    trials. Arch Intern Med. 2012;172(9):686-694.

    46. Bays HE, Ballantyne CM, Kastelein JJ, Isaacsohn JL, Braeckman

    RA, Soni PN. Eicosapentaenoic acid ethyl ester (AMR101) ther-apy in patients with very high triglyceride levels (from the Multi-

    center, plAcebo-controlled, Randomized, double-blINd, 12-week

    study with an open-label Extension MARINE. trial). Am J Car-

    diol. 2011;108(5):682-690.

    47. Wierzbicki AS. Lipid-altering agents: the future.Int J Clin Pract.

    2004;58(11):1063-1072.

    48. Wierzbicki AS, Hardman TC, Viljoen A. New lipid-lowering

    drugs: an update. Int J Clin Pract. 2012;66(3):270-280.

    49. Raal FJ, Santos RD, Blom DJ, et al. Mipomersen, an apolipopro-

    tein B synthesis inhibitor, for lowering of LDL cholesterol

    concentrations in patients with homozygous familial hypercholes-

    terolaemia: a randomised, double-blind, placebo-controlled trial.

    Lancet. 2010;375(9719):998-1006.

    50. Wierzbicki AS, Hardman T, Prince WT. Future challenges for

    microsomal transport protein inhibitors.Curr Vasc Pharmacol.

    2009;7(3):277-286.

    51. Cuchel M, Meagher EA, du Toit Theron H, et al.Efficacy and safety

    of a microsomal triglyceride transfer protein inhibitor in patients

    with homozygous familial hypercholesterolaemia: a single-arm,

    open-label, phase 3 study.Lancet. 2013;381(9860):40-46.

    52. Wierzbicki AS, Hardman TC, Viljoen A. Inhibition of pro-protein

    convertase subtilisin kexin 9 (PCSK9) as a treatment for hyperli-

    pidaemia. Expert Opin Investig Drugs. 2012;21(5):667-676.

    53. FruchartJC, Sacks F, HermansMP, et al.The residual risk reduction

    initiative: a call to action to reduce residual vascular risk in patients

    with dyslipidemia.Am J Cardiol. 2008;102(10 suppl):1K-34K.

    54. Barter PJ, Caulfield M, Eriksson M, et al. Effects of torcetrapib in

    patients at high risk for coronary events. N Engl J Med. 2007;

    357(21):2109-2122.

    55. Schwartz GG, Olsson AG, Abt M, et al. Effects of dalcetrapib in

    patients with a recent acute coronary syndrome.N Engl J Med.

    2012;367(22):2089-2099.

    56. Wierzbicki AS, Viljoen A. Alipogene tiparvovec: gene therapy

    for lipoprotein lipase deficiency. Expert Opin Biol Ther. 2013;

    13(1):7-10.

    Ewang-Emukowhate and Wierzbicki 411

    http://www.theheart.org/article/1515533.dohttp://www.theheart.org/article/1515533.dohttp://www.theheart.org/article/1515533.dohttp://www.theheart.org/article/1515533.do

Recommended