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1.
J Clin Lipidol ; 2024 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-39299825

RESUMEN

This is an exciting time in the lipoprotein(a) (Lp(a)) field. Attention to this important lipoprotein and potent cardiovascular risk marker is transitioning from the purview of the specialist to that of the general practitioner. Its clinical adoption as an important test is increasing in momentum. There is evidence that Lp(a) contributes to the pathology of atherothrombotic disease, aortic valve stenosis, and childhood ischemic strokes. Three large, Phase 3, randomized, cardiovascular outcomes trials in which Lp(a) is specifically and substantially lowered by mRNA-directed therapies in secondary prevention settings are in progress and will start to report results as early as 2025. Regardless of outcomes, there remain many unanswered questions about Lp(a), ranging from fundamental unknowns about Lp(a) biology, to the complexity of its measurement, optimal screening strategies, and clinical management in individuals with high Lp(a) levels both with and without overt cardiovascular disease. Accordingly, The National Lipid Association (NLA) convened an Expert Discussion involving clinicians and fundamental researchers to identify knowledge gaps in our understanding of Lp(a) biology and pathogenicity and to discuss approaches in the management of elevated Lp(a) in different clinical settings. (183 words).

2.
J Clin Lipidol ; 2024 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-39289122

RESUMEN

Guidelines recommend checking lipoprotein(a) [Lp(a)] levels in patients at high-risk for cardiovascular disease, with more recent recommendations advocating for universal screening in all adults. A brief electronic survey was distributed to select groups of University of Pennsylvania Health System (UPHS) providers, including Internal Medicine and Cardiology physicians and advance practice providers, to understand the current attitudes and barriers to testing for Lp(a). Of the 126 survey respondents, only 31 % answered that they test for Lp(a) regularly in their practice. Presence of ASCVD and a family history of ASCVD were the most common reasons for testing. Most survey respondents (69 %) replied that they do not currently check Lp(a) levels in patients. The most common reasons provided included lack of familiarity with Lp(a), insurance/ billing concerns, lack of clinical trial outcomes data, and lack of available pharmaceutical interventions. Results from ongoing clinical trials of novel Lp(a)-lowering therapies, if successful, may address provider hesitation toward Lp(a)-testing, but there remains a large gap to fill in awareness of Lp(a).

3.
J Clin Lipidol ; 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39256087

RESUMEN

This National Lipid Association (NLA) Expert Clinical Consensus provides an overview of the physiologic and clinical considerations regarding the role of apolipoprotein B (apoB) measurement to guide clinical care based on the available scientific evidence and expert opinion. ApoB represents the total concentration of atherogenic lipoprotein particles in the circulation and more accurately reflects the atherogenic burden of lipoproteins when compared to low-density lipoprotein cholesterol (LDL-C). ApoB is a validated clinical measurement that augments the information found in a standard lipoprotein lipid panel; therefore, there is clinical value in using apoB in conjunction with a standard lipoprotein lipid profile when assessing risk and managing lipid-lowering therapy (LLT). ApoB has been shown to be superior to LDL-C in risk assessment both before and during treatment with LLT. In individuals, there can be discordance between levels of LDL-C and apoB, as well as LDL-C and non-high-density lipoprotein cholesterol (non-HDL-C), despite high levels of population-wide correlation. When there is discordance between LDL-C and apoB, or LDL-C and non-HDL-C, atherosclerotic cardiovascular disease risk generally aligns better with apoB or non-HDL-C. Additionally, apoB can be used in tandem with standard lipoprotein lipid measurements to diagnose distinct lipoprotein phenotypes. ApoB testing can inform clinical prognosis and care, as well as enable family cascade screening, when an inherited lipoprotein syndrome is identified. The NLA and other organizations will continue to educate clinicians about the role of apoB measurement in improving clinical risk assessment and dyslipidemia management. An urgent need exists to improve access and reimbursement for apoB testing.

4.
JACC Basic Transl Sci ; 9(7): 865-876, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39170956

RESUMEN

This prospective ex vivo and in vitro pharmacodynamic (PD)/pharmacokinetic investigation was conducted in patients with diabetes mellitus with (n = 31) and without chronic kidney disease (n = 30). PD assessments included platelet reactivity index, maximum platelet aggregation, and P2Y12 reaction units. Ex vivo pharmacokinetic assessments included plasma levels of clopidogrel and its active metabolite. In vitro PD assessments were conducted on baseline samples incubated with escalating concentrations of clopidogrel and its active metabolite. Among patients with diabetes mellitus treated with clopidogrel, impaired renal function was associated with increased maximum platelet aggregation. This finding could be attributed partially to upregulation of the P2Y12 activity without differences in drug absorption or metabolism. (Impact of Chronic Kidney Disease on Clopidogrel Effects in Diabetes Mellitus; NCT03774394).

5.
Am J Prev Cardiol ; 19: 100701, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39070027

RESUMEN

There is a direct relationship between the duration and level of exposure to low density lipoprotein cholesterol (LDL-C) levels over one's lifespan and cardiovascular events. Early treatment to lower elevated LDL-C is crucial for better outcomes with multiple therapies currently available to reduce atherogenic lipoproteins. Statins remain the foundation of LDL-C lowering therapy as one of the most cost-effective drugs to reduce atherosclerotic events (ASCVD) and mortality. Nonetheless, LDL-driven goal attainment remains suboptimal globally, highlighting a considerable need for non-statin therapies to address residual risk related to statin intolerance, non-adherence, and inherited lipoprotein disorders. LDL-C lowering interventions beyond statins include ezetimibe, PCSK9 monoclonal antibodies, inclisiran and bempedoic acid with specific guideline recommendations as to when to consider each. For patients with homozygous familial hypercholesterolemia requiring more advanced therapy, lomitapide and evinacumab are available, providing mechanisms that are not LDL receptor dependent. Lipoprotein apheresis remains an effective option for clinical familial hypercholesterolemia as well as elevated lipoprotein (a). There are investigational therapies being explored to add to our current armamentarium including CETP inhibitors, a third-generation PCSK9 inhibitor (small recombinant fusion protein oral PCSK9 inhibitor) and gene editing which aims to directly restore or disrupt genes of interest at the DNA level. This article is a brief review of the pharmacotherapy options beyond statins for lowering LDL-C and their impact on ASCVD risk reduction. Our primary aim is to guide physicians on the role these therapies play in achieving appropriate LDL-C goals, with an algorithm of when to consider each based on efficacy, safety and outcomes.

6.
Dermatol Clin ; 42(3): 417-428, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38796273

RESUMEN

National guidelines define psoriasis as a risk enhancer for cardiovascular disease and recommend increased monitoring and more intense management of cardiovascular risk factors in these patients, who face an increased burden of cardiovascular disease morbidity and mortality. Screening for modifiable cardiovascular risk factors, including blood pressure, weight, cholesterol, glucose, and smoking, can be efficiently incorporated into routine dermatology clinical practice. Partnerships with primary care providers and preventive cardiologists are essential to improving management of cardiovascular risk in patients with psoriasis.


Asunto(s)
Enfermedades Cardiovasculares , Factores de Riesgo de Enfermedad Cardiaca , Guías de Práctica Clínica como Asunto , Psoriasis , Humanos , Psoriasis/complicaciones , Psoriasis/terapia , Enfermedades Cardiovasculares/prevención & control , Factores de Riesgo , Atención Primaria de Salud
7.
Am J Prev Cardiol ; 18: 100648, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38584606

RESUMEN

Triglycerides play a crucial role in the efficient storage of energy in the body. Mild and moderate hypertriglyceridemia (HTG) is a heterogeneous disorder with significant association with atherosclerotic cardiovascular disease (ASCVD), including myocardial infarction, ischemic stroke, and peripheral artery disease and represents an important component of the residual ASCVD risk in statin treated patients despite optimal low-density lipoprotein cholesterol reduction. Individuals with severe HTG (>1,000 mg/dL) rarely develop atherosclerosis but have an incremental incidence of acute pancreatitis with significant morbidity and mortality. HTG can occur from a combination of genetic (both mono and polygenic) and environmental factors including poor diet, low physical activity, obesity, medications, and diseases like insulin resistance and other endocrine pathologies. HTG represents a potential target for ASCVD risk and pancreatitis risk reduction, however data on ASCVD reduction by treating HTG is still lacking and HTG-associated acute pancreatitis occurs too rarely to effectively demonstrate treatment benefit. In this review, we address the key aspects of HTG pathophysiology and examine the mechanisms and background of current and emerging therapies in the management of HTG.

8.
J Clin Lipidol ; 18(3): e308-e319, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38565461

RESUMEN

Since the 2019 National Lipid Association (NLA) Scientific Statement on Use of Lipoprotein(a) in Clinical Practice was issued, accumulating epidemiological data have clarified the relationship between lipoprotein(a) [Lp(a)] level and cardiovascular disease risk and risk reduction. Therefore, the NLA developed this focused update to guide clinicians in applying this emerging evidence in clinical practice. We now have sufficient evidence to support the recommendation to measure Lp(a) levels at least once in every adult for risk stratification. Individuals with Lp(a) levels <75 nmol/L (30 mg/dL) are considered low risk, individuals with Lp(a) levels ≥125 nmol/L (50 mg/dL) are considered high risk, and individuals with Lp(a) levels between 75 and 125 nmol/L (30-50 mg/dL) are at intermediate risk. Cascade screening of first-degree relatives of patients with elevated Lp(a) can identify additional individuals at risk who require intervention. Patients with elevated Lp(a) should receive early, more-intensive risk factor management, including lifestyle modification and lipid-lowering drug therapy in high-risk individuals, primarily to reduce low-density lipoprotein cholesterol (LDL-C) levels. The U.S. Food and Drug Administration approved an indication for lipoprotein apheresis (which reduces both Lp(a) and LDL-C) in high-risk patients with familial hypercholesterolemia and documented coronary or peripheral artery disease whose Lp(a) level remains ≥60 mg/dL [∼150 nmol/L)] and LDL-C ≥ 100 mg/dL on maximally tolerated lipid-lowering therapy. Although Lp(a) is an established independent causal risk factor for cardiovascular disease, and despite the high prevalence of Lp(a) elevation (∼1 of 5 individuals), measurement rates are low, warranting improved screening strategies for cardiovascular disease prevention.


Asunto(s)
Enfermedades Cardiovasculares , Lipoproteína(a) , Humanos , Lipoproteína(a)/sangre , Enfermedades Cardiovasculares/prevención & control , Enfermedades Cardiovasculares/sangre , Factores de Riesgo , Hipolipemiantes/uso terapéutico
9.
JACC Cardiovasc Interv ; 17(11): 1356-1370, 2024 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-38597172

RESUMEN

BACKGROUND: Among patients treated with a novel oral anticoagulant (NOAC) undergoing percutaneous coronary intervention (PCI), combination therapy with clopidogrel (ie, known as dual antithrombotic therapy [DAT]) is the treatment of choice. However, there are concerns for individuals with impaired response to clopidogrel. OBJECTIVES: The authors sought to assess the pharmacodynamic (PD) effects of clopidogrel vs low-dose ticagrelor in patients with impaired clopidogrel response assessed by the ABCD-GENE score. METHODS: This was a prospective, randomized PD study of NOAC-treated patients undergoing PCI. Patients with an ABCD-GENE score ≥10 (n = 39), defined as having impaired clopidogrel response, were randomized to low-dose ticagrelor (n = 20; 60 mg twice a day) or clopidogrel (n = 19; 75 mg once a day). Patients with an ABCD-GENE score <10 (n = 42) were treated with clopidogrel (75 mg once a day; control cohort). PD assessments at baseline and 30 days post-randomization (trough and peak) were performed to assess P2Y12 signaling (VerifyNow P2Y12 reaction units [PRU], light transmittance aggregometry, and vasodilator-stimulated phosphoprotein); makers of thrombosis not specific to P2Y12 signaling were also assessed. The primary endpoint was PRU (trough levels) at 30 days. RESULTS: At 30 days, PRU levels were reduced with ticagrelor-based DAT compared with clopidogrel-based DAT at trough (23.0 [Q1-Q3: 3.0-46.0] vs 154.5 [Q1-Q3: 77.5-183.0]; P < 0.001) and peak (6.0 [Q1-Q3: 4.0-14.0] vs 129.0 [Q1-Q3: 66.0-171.0]; P < 0.001). Trough PRU levels in the control arm (104.0 [Q1-Q3: 35.0-167.0]) were higher than ticagrelor-based DAT (P = 0.005) and numerically lower than clopidogrel-based DAT (P = 0.234). Results were consistent by light transmittance aggregometry and vasodilator-stimulated phosphoprotein. Markers measuring other pathways leading to thrombus formation were largely unaffected. CONCLUSIONS: In NOAC-treated patients undergoing PCI with an ABCD-GENE score ≥10, ticagrelor-based DAT using a 60-mg, twice-a-day regimen reduced platelet P2Y12 reactivity compared with clopidogrel-based DAT. (Tailoring P2Y12 Inhibiting Therapy in Patients Requiring Oral Anticoagulation After PCI [SWAP-AC-2]; NCT04483583).


Asunto(s)
Anticoagulantes , Clopidogrel , Intervención Coronaria Percutánea , Inhibidores de Agregación Plaquetaria , Antagonistas del Receptor Purinérgico P2Y , Receptores Purinérgicos P2Y12 , Ticagrelor , Humanos , Intervención Coronaria Percutánea/efectos adversos , Ticagrelor/efectos adversos , Ticagrelor/administración & dosificación , Masculino , Estudios Prospectivos , Femenino , Anciano , Persona de Mediana Edad , Clopidogrel/administración & dosificación , Clopidogrel/efectos adversos , Antagonistas del Receptor Purinérgico P2Y/efectos adversos , Antagonistas del Receptor Purinérgico P2Y/administración & dosificación , Inhibidores de Agregación Plaquetaria/administración & dosificación , Inhibidores de Agregación Plaquetaria/efectos adversos , Administración Oral , Resultado del Tratamiento , Factores de Tiempo , Anticoagulantes/administración & dosificación , Anticoagulantes/efectos adversos , Receptores Purinérgicos P2Y12/efectos de los fármacos , Receptores Purinérgicos P2Y12/sangre , Pruebas de Función Plaquetaria , Agregación Plaquetaria/efectos de los fármacos , Fosfoproteínas/sangre , Plaquetas/efectos de los fármacos , Plaquetas/metabolismo , Proteínas de Microfilamentos/sangre , Proteínas de Microfilamentos/genética , Enfermedad de la Arteria Coronaria/terapia , Enfermedad de la Arteria Coronaria/sangre , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Moléculas de Adhesión Celular/sangre , Resistencia a Medicamentos , Terapia Antiplaquetaria Doble/efectos adversos
11.
Thromb Haemost ; 124(3): 263-273, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37224883

RESUMEN

BACKGROUND: To date, there are no data on switching to dual pathway inhibition (DPI) patients who have completed a guideline-recommended dual antiplatelet therapy (DAPT) regimen. OBJECTIVES: To assess the feasibility of switching from DAPT to DPI and to compare the pharmacodynamic (PD) profiles of these treatments. METHODS: This was a prospective, randomized, PD study conducted in 90 patients with chronic coronary syndrome (CCS) on DAPT with aspirin (81 mg/qd) plus a P2Y12 inhibitor (clopidogrel [75 mg/qd; n = 30], ticagrelor [90 mg/bid; n = 30], or prasugrel [10 mg/qd; n = 30]). Patients in each cohort were randomized to maintain DAPT or switch to DPI (aspirin 81 mg/qd plus rivaroxaban 2.5 mg/bid). PD assessments included: VerifyNow P2Y12 reaction units; light transmittance aggregometry following stimuli with adenosine diphosphate (ADP), tissue factor (TF), and a combination of collagen, ADP, and TF (maximum platelet aggregation %); thrombin generation (TG). Assays were performed at baseline and 30 days postrandomization. RESULTS: Switching from DAPT to DPI occurred without major side effects. DAPT was associated with enhanced P2Y12 inhibition, while DPI with reduced TG. Platelet-mediated global thrombogenicity (primary endpoint) showed no differences between DAPT and DPI in the ticagrelor (14.5% [0.0-63.0] vs. 20.0% [0.0-70.0]; p = 0.477) and prasugrel (20.0% [0.0-66.0] vs. 4.0% [0.0-70.0]; p = 0.482), but not clopidogrel (27.0% [0.0-68.0] vs. 53.0% [0.0-81.0]; p = 0.011), cohorts. CONCLUSION: In patients with CCS, switching from different DAPT regimens to DPI was feasible, showing enhanced P2Y12 inhibition with DAPT and reduced TG with DPI, with no differences in platelet-mediated global thrombogenicity between DPI and ticagrelor- and prasugrel-, but not clopidogrel-, based DAPT. CLINICAL TRIAL REGISTRATION: http://www. CLINICALTRIALS: gov Unique Identifier: NCT04006288.


Asunto(s)
Síndrome Coronario Agudo , Intervención Coronaria Percutánea , Humanos , Aspirina/uso terapéutico , Inhibidores de Agregación Plaquetaria/uso terapéutico , Ticagrelor/uso terapéutico , Rivaroxabán/efectos adversos , Clorhidrato de Prasugrel , Estudios Prospectivos , Adenosina/efectos adversos , Clopidogrel/uso terapéutico , Síndrome Coronario Agudo/tratamiento farmacológico , Síndrome Coronario Agudo/etiología , Adenosina Difosfato , Antagonistas del Receptor Purinérgico P2Y , Intervención Coronaria Percutánea/efectos adversos
13.
JACC Cardiovasc Interv ; 16(20): 2528-2539, 2023 10 23.
Artículo en Inglés | MEDLINE | ID: mdl-37609698

RESUMEN

BACKGROUND: A drug-drug interaction (DDI) may occur when transitioning from intravenous P2Y12 inhibition with cangrelor to oral P2Y12 inhibition with prasugrel. However, this has never been tested in patients undergoing percutaneous coronary intervention (PCI). OBJECTIVES: This study sought to rule out a DDI when cangrelor and prasugrel are concomitantly administered in PCI patients. METHODS: SWAP-6 (Switching Antiplatelet-6) was a prospective, randomized, 3-arm, open-label pharmacokinetic (PK) and pharmacodynamic (PD) study. Patients (N = 77) were randomized to 1) prasugrel only at the start of PCI, 2) cangrelor plus prasugrel concomitantly at the start of PCI, or 3) cangrelor at the start of PCI plus prasugrel at the end of infusion. Cangrelor infusion was maintained for 2 hours. PK/PD assessments were performed at baseline and 6 time points postrandomization. The primary endpoint was noninferiority in VerifyNow (Werfen) P2Y12 reaction units measured at 4 hours after randomization between cangrelor plus prasugrel concomitantly administered vs prasugrel only. PK assessments included plasma levels of the active metabolite of prasugrel. RESULTS: Compared with prasugrel, cangrelor further enhances P2Y12 inhibitory effects. At 4 hours postrandomization, P2Y12 reaction unit levels were significantly lower with prasugrel only compared to cangrelor and prasugrel concomitantly administered (least squares means difference = 130; 95% CI: 85-176), failing to meet the prespecified noninferiority margin. Findings were corroborated by multiple PD assays. The active metabolite of prasugrel levels were not affected by concomitant administration of cangrelor and were low at the end of cangrelor infusion. CONCLUSIONS: In patients undergoing PCI, concomitant administration of prasugrel with cangrelor leads to a marked increase in platelet reactivity after stopping cangrelor infusion, supporting the presence of a DDI. (Switching Antiplatelet Therapy-6 [SWAP-6]; NCT04668144).


Asunto(s)
Intervención Coronaria Percutánea , Inhibidores de Agregación Plaquetaria , Humanos , Clorhidrato de Prasugrel , Intervención Coronaria Percutánea/efectos adversos , Estudios Prospectivos , Antagonistas del Receptor Purinérgico P2Y , Pruebas de Función Plaquetaria , Resultado del Tratamiento
14.
J Clin Lipidol ; 17(3): 310-312, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37173160
15.
J Am Heart Assoc ; 12(10): e028626, 2023 05 16.
Artículo en Inglés | MEDLINE | ID: mdl-37183838

RESUMEN

Background Dyslipidemia is an important risk factor for atherosclerotic cardiovascular disease, especially when disease presents at a young age. Despite national screening guidelines to perform a lipid profile test in children and young adults, many reproductive-age women have not undergone lipid screening. Our objective was to assess the feasibility of lipid screening during the first trimester of pregnancy as a strategy to increase lipid screening rates among women receiving prenatal care. Methods and Results A nonfasting lipid panel was incorporated into routine prenatal care among obstetricians at a single academic clinic. Educational materials and a clinical referral pathway were developed for patients with abnormal results. Over 6 months, 445 patients had a first prenatal care visit. Of the 358 patients who completed laboratory testing, 236 (66%) patients completed lipid testing. Overall, 59 (25%) patients had abnormal results. One patient with previously undiagnosed suspected familial hypercholesterolemia was identified. Barriers to ordering lipid tests included the burden of reviewing additional laboratory results and uncertainty about patient counseling. Conclusions Implementation of nonfasting lipid screening as part of routine prenatal care during the first trimester is feasible and may play a crucial role in timely diagnosis and management of lipid disorders in women of reproductive age. Future work should focus on optimizing health system workflow to minimize burden on clinical staff and facilitate follow-up with appropriate specialists.


Asunto(s)
Dislipidemias , Atención Prenatal , Embarazo , Adulto Joven , Niño , Humanos , Femenino , Primer Trimestre del Embarazo , Estudios de Factibilidad , Dislipidemias/diagnóstico , Dislipidemias/epidemiología , Lípidos
16.
J Clin Lipidol ; 17(2): 199-207, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36965957

RESUMEN

The prevalence of lipid-related risk for atherosclerotic cardiovascular disease surpasses half the population as individuals age, and thus generalists and primary care providers manage by far the bulk of treatment of lipid disorders. It should come as no surprise that many individuals who practice clinical lipidology, focusing on the care of patients with resistant or perplexing lipid disorders, come from a background of general or primary care medicine. Among 429 providers responding to a survey of National Lipid Association (NLA) members in 2010, 50% were internal medicine or family medicine practitioners, 32% cardiologists, 11% endocrinologists, and 7% with a variety of other specialty training. This JCL Roundtable brings together 3 NLA physician leaders who came from primary care. We discuss their career pathways, their blend of practice, teaching, research, and administration, and the settings in which they carry out the lipidology mission.


Asunto(s)
Trastornos del Metabolismo de los Lípidos , Humanos , Lípidos
17.
J Clin Med ; 12(4)2023 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-36835917

RESUMEN

Hypertriglyceridemia (HTG) is a prevalent medical condition in patients with cardiometabolic risk factors and is associated with an increased risk of atherosclerotic cardiovascular disease (ASCVD), if left undiagnosed and undertreated. Current guidelines identify HTG as a risk-enhancing factor and, as a result, recommend clinical evaluation and lifestyle-based interventions to address potential secondary causes of elevated triglyceride (TG) levels. For individuals with mild to moderate HTG at risk of ASCVD, statin therapy alone or in combination with other lipid-lowering medications known to decrease ASCVD risk are guideline-endorsed. In addition to lifestyle modifications, patients with severe HTG at risk of acute pancreatitis may benefit from fibrates, mixed formulation omega-3 fatty acids, and niacin; however, evidence does not support their use for ASCVD risk reduction in the contemporary statin era. Novel therapeutics including those that target apoC-III and ANGPTL3 have shown to be safe, well-tolerated, and effective for lowering TG levels. Given the growing burden of cardiometabolic disease and risk factors, public health and health policy strategies are urgently needed to enhance access to effective pharmacotherapies, affordable and nutritious food options, and timely health care services.

18.
EuroIntervention ; 18(15): 1254-1265, 2023 Mar 20.
Artículo en Inglés | MEDLINE | ID: mdl-36602868

RESUMEN

BACKGROUND: The impact of intense low-density lipoprotein cholesterol (LDL-C) reduction using a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor on profiles of platelet reactivity has yet to be explored. AIMS: Our aim was to investigate the effects of the PCSK9 inhibitor, evolocumab, on platelet reactivity in patients with atherosclerotic cardiovascular disease (ASCVD) on clopidogrel treatment. METHODS: This was a prospective, randomised, double-blind, placebo-controlled pharmacodynamic study in patients with ASCVD on clopidogrel treatment and with LDL-C levels ≥70 mg/dL despite a maximally tolerated statin dose. Patients were stratified according to levels of platelet reactivity using VerifyNow P2Y12 reactivity units (PRU) into high platelet reactivity (HPR; PRU >208) or normal platelet reactivity (NPR; PRU >85 and ≤208). Each cohort was randomised to receive evolocumab 420 mg or placebo. The primary endpoint was the difference in PRU at 30 days. RESULTS: A total of 84 patients (HPR, n=37 [19 evolocumab vs 18 placebo]; NPR, n=47 [22 evolocumab vs 25 placebo]) were included. Evolocumab significantly reduced LDL-C compared to placebo at 14 (p<0.001) and 30 (p=0.001) days. At 14 days, PRU levels were significantly lower with evolocumab compared to placebo in the HPR (218.2±29.7 vs 246.6±35.2; p=0.017), but not in the NPR cohort (141.2±42.8 vs 148.2±41.7; p=0.578). At 30 days, there were no significant differences in PRU in the HPR (219.3±38.3 vs 240.9±51.8; p=0.161) or NPR (141.5±54.3 vs 158.6±40.8; p=0.229) cohorts. CONCLUSIONS: Compared to placebo, evolocumab in adjunct to statin therapy did not significantly reduce platelet reactivity at 30 days in ASCVD patients on clopidogrel treatment despite intense LDL-C reduction. ClinicalTrials.gov: NCT03096288.


Asunto(s)
Anticolesterolemiantes , Aterosclerosis , Enfermedades Cardiovasculares , Inhibidores de Hidroximetilglutaril-CoA Reductasas , Humanos , Proproteína Convertasa 9 , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , LDL-Colesterol/uso terapéutico , Clopidogrel/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales/efectos adversos , Enfermedades Cardiovasculares/tratamiento farmacológico , Estudios Prospectivos , Aterosclerosis/tratamiento farmacológico , Resultado del Tratamiento , Método Doble Ciego
19.
JACC Cardiovasc Interv ; 16(1): 36-46, 2023 01 09.
Artículo en Inglés | MEDLINE | ID: mdl-36317958

RESUMEN

BACKGROUND: There are no studies specifically designed to rule out a drug-drug interaction (DDI) when cangrelor is used among patients who have been pretreated with ticagrelor. OBJECTIVES: This study sought to rule out a DDI among cangrelor-treated patients who have been pretreated with ticagrelor. METHODS: In this prospective, randomized, double-blind, placebo-controlled, crossover, pharmacokinetic (PK) and pharmacodynamic (PD) study, patients with coronary artery disease (N = 20) were pretreated with a 180-mg ticagrelor loading dose and after 1 hour randomized to placebo or cangrelor (bolus and infusion for 2 hours). Patients crossed over after 1 to 4 weeks of washout. PK analysis included ticagrelor plasma levels and its active metabolite. PD assessments included VerifyNow P2Y12 reaction units (PRU), light transmittance aggregometry, vasodilator-stimulated phosphoprotein, and Total Thrombus-Formation Analysis System. PK/PD assessments were performed at 7 time points. RESULTS: Compared with placebo, adding cangrelor to patients pretreated with ticagrelor resulted in a significant reduction in PRU at 30 minutes and 1 hour after starting infusion. At 2 hours after stopping cangrelor/placebo infusion, PRU were low and similar in both groups (16.9 vs 12.6; mean difference: 4.3; 95% CI: -28.6 to 37.3), meeting the noninferiority primary endpoint (predefined noninferiority margin 45 PRU). Consistent findings were shown with all PD assays. PK tracked PD findings with no differences between groups in plasma levels of ticagrelor and its metabolite. CONCLUSIONS: Compared with placebo, the use of cangrelor in patients pretreated with ticagrelor results in enhanced platelet inhibition with no differences in PK/PD profiles after discontinuation of drug infusion indicating the absence of a DDI. (PD and PK Profiles of Switching Between Cangrelor and Ticagrelor Following Ticagrelor Pre-treatment [SWAP-5]; NCT04634162).


Asunto(s)
Enfermedad de la Arteria Coronaria , Humanos , Ticagrelor , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Enfermedad de la Arteria Coronaria/tratamiento farmacológico , Inhibidores de Agregación Plaquetaria , Estudios Prospectivos , Resultado del Tratamiento , Plaquetas/metabolismo , Antagonistas del Receptor Purinérgico P2Y , Pruebas de Función Plaquetaria
20.
Clin Chem ; 68(10): 1302-1310, 2022 10 06.
Artículo en Inglés | MEDLINE | ID: mdl-35900196

RESUMEN

BACKGROUND: Estimation of atherosclerotic cardiovascular disease (ASCVD) risk is a key step in cardiovascular disease (CVD) prevention, but it requires entering additional risk factor information into a computer. We developed a simplified ASCVD risk score that can be automatically calculated by the clinical laboratory when a fasting standard lipid panel is reported. METHODS: Equations for an estimated ASCVD (eASCVD) risk score were developed for 4 race/sex groups (non-Hispanic White/Black, men/women), using the following variables: total cholesterol, high-density lipoprotein cholesterol, triglycerides, and age. The eASCVD score was derived using regression analysis to yield similar risk estimates as the standard ASCVD risk equations for non-diabetic individuals not on lipid-lowering therapy in the National Health and Nutrition Examination Survey (NHANES) (n = 6027). RESULTS: At a cutpoint of 7.5%/10-year, the eASCVD risk score had an overall sensitivity of 69.1% and a specificity of 97.5% for identifying statin-eligible patients with at least intermediate risk based on the standard risk score. By using the sum of other risk factors present (systolic blood pressure >130 mmHg, blood pressure medication use, and cigarette use), the overall sensitivity of the eASCVD score improved to 93.7%, with a specificity of 92.3%. Furthermore, it showed 90% concordance with the standard risk score in predicting cardiovascular events in the Atherosclerosis Risk in Communities (ARIC) study (n = 14 742). CONCLUSIONS: Because the automated eASCVD risk score can be computed for all patients with a fasting standard lipid panel, it could be used as an adjunctive tool for the primary prevention of ASCVD and as a decision aid for statin therapy.


Asunto(s)
Aterosclerosis , Enfermedades Cardiovasculares , Inhibidores de Hidroximetilglutaril-CoA Reductasas , Aterosclerosis/tratamiento farmacológico , Aterosclerosis/prevención & control , Enfermedades Cardiovasculares/tratamiento farmacológico , Colesterol , Técnicas de Apoyo para la Decisión , Femenino , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Lipoproteínas HDL , Masculino , Encuestas Nutricionales , Medición de Riesgo , Factores de Riesgo , Triglicéridos
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